Merge tag 'v5.18'

Linux 5.18

725 files changed, 28856 insertions, 16282 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 974d497a897d..d7136d13aa44 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -133,6 +133,7 @@ union acpi_subtable_headers {
 	struct acpi_subtable_header common;
 	struct acpi_hmat_structure hmat;
 	struct acpi_prmt_module_header prmt;
+	struct acpi_cedt_header cedt;
 };
 
 typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table);
@@ -140,6 +141,9 @@ typedef int (*acpi_tbl_table_handler)(struct acpi_table_header *table);
 typedef int (*acpi_tbl_entry_handler)(union acpi_subtable_headers *header,
 				      const unsigned long end);
 
+typedef int (*acpi_tbl_entry_handler_arg)(union acpi_subtable_headers *header,
+					  void *arg, const unsigned long end);
+
 /* Debugger support */
 
 struct acpi_debugger_ops {
@@ -216,6 +220,8 @@ static inline int acpi_debugger_notify_command_complete(void)
 struct acpi_subtable_proc {
 	int id;
 	acpi_tbl_entry_handler handler;
+	acpi_tbl_entry_handler_arg handler_arg;
+	void *arg;
 	int count;
 };
 
@@ -232,17 +238,31 @@ int acpi_locate_initial_tables (void);
 void acpi_reserve_initial_tables (void);
 void acpi_table_init_complete (void);
 int acpi_table_init (void);
+
+#ifdef CONFIG_ACPI_TABLE_LIB
+#define EXPORT_SYMBOL_ACPI_LIB(x) EXPORT_SYMBOL_NS_GPL(x, ACPI)
+#define __init_or_acpilib
+#define __initdata_or_acpilib
+#else
+#define EXPORT_SYMBOL_ACPI_LIB(x)
+#define __init_or_acpilib __init
+#define __initdata_or_acpilib __initdata
+#endif
+
 int acpi_table_parse(char *id, acpi_tbl_table_handler handler);
-int __init acpi_table_parse_entries(char *id, unsigned long table_size,
-			      int entry_id,
-			      acpi_tbl_entry_handler handler,
-			      unsigned int max_entries);
-int __init acpi_table_parse_entries_array(char *id, unsigned long table_size,
-			      struct acpi_subtable_proc *proc, int proc_num,
-			      unsigned int max_entries);
+int __init_or_acpilib acpi_table_parse_entries(char *id,
+		unsigned long table_size, int entry_id,
+		acpi_tbl_entry_handler handler, unsigned int max_entries);
+int __init_or_acpilib acpi_table_parse_entries_array(char *id,
+		unsigned long table_size, struct acpi_subtable_proc *proc,
+		int proc_num, unsigned int max_entries);
 int acpi_table_parse_madt(enum acpi_madt_type id,
 			  acpi_tbl_entry_handler handler,
 			  unsigned int max_entries);
+int __init_or_acpilib
+acpi_table_parse_cedt(enum acpi_cedt_type id,
+		      acpi_tbl_entry_handler_arg handler_arg, void *arg);
+
 int acpi_parse_mcfg (struct acpi_table_header *header);
 void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
 
@@ -506,7 +526,7 @@ acpi_status acpi_release_memory(acpi_handle handle, struct resource *res,
 int acpi_resources_are_enforced(void);
 
 #ifdef CONFIG_HIBERNATION
-void __init acpi_no_s4_hw_signature(void);
+extern int acpi_check_s4_hw_signature;
 #endif
 
 #ifdef CONFIG_PM_SLEEP
@@ -560,6 +580,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
 extern bool osc_sb_apei_support_acked;
 extern bool osc_pc_lpi_support_confirmed;
 extern bool osc_sb_native_usb4_support_confirmed;
+extern bool osc_sb_cppc_not_supported;
 
 /* USB4 Capabilities */
 #define OSC_USB_USB3_TUNNELING			0x00000001
@@ -577,7 +598,6 @@ extern u32 osc_sb_native_usb4_control;
 #define OSC_PCI_MSI_SUPPORT			0x00000010
 #define OSC_PCI_EDR_SUPPORT			0x00000080
 #define OSC_PCI_HPX_TYPE_3_SUPPORT		0x00000100
-#define OSC_PCI_SUPPORT_MASKS			0x0000019f
 
 /* PCI Host Bridge _OSC: Capabilities DWORD 3: Control Field */
 #define OSC_PCI_EXPRESS_NATIVE_HP_CONTROL	0x00000001
@@ -587,7 +607,6 @@ extern u32 osc_sb_native_usb4_control;
 #define OSC_PCI_EXPRESS_CAPABILITY_CONTROL	0x00000010
 #define OSC_PCI_EXPRESS_LTR_CONTROL		0x00000020
 #define OSC_PCI_EXPRESS_DPC_CONTROL		0x00000080
-#define OSC_PCI_CONTROL_MASKS			0x000000bf
 
 #define ACPI_GSB_ACCESS_ATTRIB_QUICK		0x00000002
 #define ACPI_GSB_ACCESS_ATTRIB_SEND_RCV         0x00000004
@@ -673,7 +692,7 @@ int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *);
 int acpi_device_modalias(struct device *, char *, int);
 
 struct platform_device *acpi_create_platform_device(struct acpi_device *,
-						    struct property_entry *);
+						    const struct property_entry *);
 #define ACPI_PTR(_ptr)	(_ptr)
 
 static inline void acpi_device_set_enumerated(struct acpi_device *adev)
@@ -912,7 +931,7 @@ static inline int acpi_device_modalias(struct device *dev,
 
 static inline struct platform_device *
 acpi_create_platform_device(struct acpi_device *adev,
-			    struct property_entry *properties)
+			    const struct property_entry *properties)
 {
 	return NULL;
 }
@@ -976,6 +995,15 @@ static inline int acpi_get_local_address(acpi_handle handle, u32 *addr)
 	return -ENODEV;
 }
 
+static inline int acpi_register_wakeup_handler(int wake_irq,
+	bool (*wakeup)(void *context), void *context)
+{
+	return -ENXIO;
+}
+
+static inline void acpi_unregister_wakeup_handler(
+	bool (*wakeup)(void *context), void *context) { }
+
 #endif	/* !CONFIG_ACPI */
 
 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
@@ -996,7 +1024,15 @@ void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
 
 acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
 					   u32 val_a, u32 val_b);
-
+#ifdef CONFIG_X86
+struct acpi_s2idle_dev_ops {
+	struct list_head list_node;
+	void (*prepare)(void);
+	void (*restore)(void);
+};
+int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg);
+void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg);
+#endif /* CONFIG_X86 */
 #ifndef CONFIG_IA64
 void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
 #else
@@ -1016,6 +1052,7 @@ int acpi_subsys_runtime_suspend(struct device *dev);
 int acpi_subsys_runtime_resume(struct device *dev);
 int acpi_dev_pm_attach(struct device *dev, bool power_on);
 bool acpi_storage_d3(struct device *dev);
+bool acpi_dev_state_d0(struct device *dev);
 #else
 static inline int acpi_subsys_runtime_suspend(struct device *dev) { return 0; }
 static inline int acpi_subsys_runtime_resume(struct device *dev) { return 0; }
@@ -1027,6 +1064,10 @@ static inline bool acpi_storage_d3(struct device *dev)
 {
 	return false;
 }
+static inline bool acpi_dev_state_d0(struct device *dev)
+{
+	return true;
+}
 #endif
 
 #if defined(CONFIG_ACPI) && defined(CONFIG_PM_SLEEP)
@@ -1170,7 +1211,6 @@ int acpi_node_prop_get(const struct fwnode_handle *fwnode, const char *propname,
 
 struct fwnode_handle *acpi_get_next_subnode(const struct fwnode_handle *fwnode,
 					    struct fwnode_handle *child);
-struct fwnode_handle *acpi_node_get_parent(const struct fwnode_handle *fwnode);
 
 struct acpi_probe_entry;
 typedef bool (*acpi_probe_entry_validate_subtbl)(struct acpi_subtable_header *,
@@ -1276,12 +1316,6 @@ acpi_get_next_subnode(const struct fwnode_handle *fwnode,
 }
 
 static inline struct fwnode_handle *
-acpi_node_get_parent(const struct fwnode_handle *fwnode)
-{
-	return NULL;
-}
-
-static inline struct fwnode_handle *
 acpi_graph_get_next_endpoint(const struct fwnode_handle *fwnode,
 			     struct fwnode_handle *prev)
 {
@@ -1353,6 +1387,7 @@ static inline int lpit_read_residency_count_address(u64 *address)
 #ifdef CONFIG_ACPI_PPTT
 int acpi_pptt_cpu_is_thread(unsigned int cpu);
 int find_acpi_cpu_topology(unsigned int cpu, int level);
+int find_acpi_cpu_topology_cluster(unsigned int cpu);
 int find_acpi_cpu_topology_package(unsigned int cpu);
 int find_acpi_cpu_topology_hetero_id(unsigned int cpu);
 int find_acpi_cpu_cache_topology(unsigned int cpu, int level);
@@ -1365,6 +1400,10 @@ static inline int find_acpi_cpu_topology(unsigned int cpu, int level)
 {
 	return -EINVAL;
 }
+static inline int find_acpi_cpu_topology_cluster(unsigned int cpu)
+{
+	return -EINVAL;
+}
 static inline int find_acpi_cpu_topology_package(unsigned int cpu)
 {
 	return -EINVAL;
@@ -1379,6 +1418,12 @@ static inline int find_acpi_cpu_cache_topology(unsigned int cpu, int level)
 }
 #endif
 
+#ifdef CONFIG_ACPI_PCC
+void acpi_init_pcc(void);
+#else
+static inline void acpi_init_pcc(void) { }
+#endif
+
 #ifdef CONFIG_ACPI
 extern void acpi_device_notify(struct device *dev);
 extern void acpi_device_notify_remove(struct device *dev);
diff --git a/include/linux/acpi_agdi.h b/include/linux/acpi_agdi.h
new file mode 100644
index 000000000000..f477f0b452fa
--- /dev/null
+++ b/include/linux/acpi_agdi.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __ACPI_AGDI_H__
+#define __ACPI_AGDI_H__
+
+#include <linux/acpi.h>
+
+#ifdef CONFIG_ACPI_AGDI
+void __init acpi_agdi_init(void);
+#else
+static inline void acpi_agdi_init(void) {}
+#endif
+#endif /* __ACPI_AGDI_H__ */
diff --git a/include/linux/aio.h b/include/linux/aio.h
index b83e68dd006f..86892a4fe7c8 100644
--- a/include/linux/aio.h
+++ b/include/linux/aio.h
@@ -20,8 +20,4 @@ static inline void kiocb_set_cancel_fn(struct kiocb *req,
 				       kiocb_cancel_fn *cancel) { }
 #endif /* CONFIG_AIO */
 
-/* for sysctl: */
-extern unsigned long aio_nr;
-extern unsigned long aio_max_nr;
-
 #endif /* __LINUX__AIO_H */
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index c68d87b87283..6562f543c3e0 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -90,14 +90,8 @@ enum amba_vendor {
 	AMBA_VENDOR_ST = 0x80,
 	AMBA_VENDOR_QCOM = 0x51,
 	AMBA_VENDOR_LSI = 0xb6,
-	AMBA_VENDOR_LINUX = 0xfe,	/* This value is not official */
 };
 
-/* This is used to generate pseudo-ID for AMBA device */
-#define AMBA_LINUX_ID(conf, rev, part) \
-	(((conf) & 0xff) << 24 | ((rev) & 0xf) << 20 | \
-	AMBA_VENDOR_LINUX << 12 | ((part) & 0xfff))
-
 extern struct bus_type amba_bustype;
 
 #define to_amba_device(d)	container_of(d, struct amba_device, dev)
@@ -122,49 +116,10 @@ struct amba_device *amba_device_alloc(const char *, resource_size_t, size_t);
 void amba_device_put(struct amba_device *);
 int amba_device_add(struct amba_device *, struct resource *);
 int amba_device_register(struct amba_device *, struct resource *);
-struct amba_device *amba_apb_device_add(struct device *parent, const char *name,
-					resource_size_t base, size_t size,
-					int irq1, int irq2, void *pdata,
-					unsigned int periphid);
-struct amba_device *amba_ahb_device_add(struct device *parent, const char *name,
-					resource_size_t base, size_t size,
-					int irq1, int irq2, void *pdata,
-					unsigned int periphid);
-struct amba_device *
-amba_apb_device_add_res(struct device *parent, const char *name,
-			resource_size_t base, size_t size, int irq1,
-			int irq2, void *pdata, unsigned int periphid,
-			struct resource *resbase);
-struct amba_device *
-amba_ahb_device_add_res(struct device *parent, const char *name,
-			resource_size_t base, size_t size, int irq1,
-			int irq2, void *pdata, unsigned int periphid,
-			struct resource *resbase);
 void amba_device_unregister(struct amba_device *);
-struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int);
 int amba_request_regions(struct amba_device *, const char *);
 void amba_release_regions(struct amba_device *);
 
-static inline int amba_pclk_enable(struct amba_device *dev)
-{
-	return clk_enable(dev->pclk);
-}
-
-static inline void amba_pclk_disable(struct amba_device *dev)
-{
-	clk_disable(dev->pclk);
-}
-
-static inline int amba_pclk_prepare(struct amba_device *dev)
-{
-	return clk_prepare(dev->pclk);
-}
-
-static inline void amba_pclk_unprepare(struct amba_device *dev)
-{
-	clk_unprepare(dev->pclk);
-}
-
 /* Some drivers don't use the struct amba_device */
 #define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff)
 #define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f)
diff --git a/include/linux/anon_inodes.h b/include/linux/anon_inodes.h
index 71881a2b6f78..5deaddbd7927 100644
--- a/include/linux/anon_inodes.h
+++ b/include/linux/anon_inodes.h
@@ -15,6 +15,10 @@ struct inode;
 struct file *anon_inode_getfile(const char *name,
 				const struct file_operations *fops,
 				void *priv, int flags);
+struct file *anon_inode_getfile_secure(const char *name,
+				       const struct file_operations *fops,
+				       void *priv, int flags,
+				       const struct inode *context_inode);
 int anon_inode_getfd(const char *name, const struct file_operations *fops,
 		     void *priv, int flags);
 int anon_inode_getfd_secure(const char *name,
diff --git a/include/linux/apple-mailbox.h b/include/linux/apple-mailbox.h
new file mode 100644
index 000000000000..720fbb70294a
--- /dev/null
+++ b/include/linux/apple-mailbox.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
+/*
+ * Apple mailbox message format
+ *
+ * Copyright (C) 2021 The Asahi Linux Contributors
+ */
+
+#ifndef _LINUX_APPLE_MAILBOX_H_
+#define _LINUX_APPLE_MAILBOX_H_
+
+#include <linux/types.h>
+
+/* encodes a single 96bit message sent over the single channel */
+struct apple_mbox_msg {
+	u64 msg0;
+	u32 msg1;
+};
+
+#endif
diff --git a/include/linux/arch_topology.h b/include/linux/arch_topology.h
index f180240dc95f..58cbe18d825c 100644
--- a/include/linux/arch_topology.h
+++ b/include/linux/arch_topology.h
@@ -11,6 +11,10 @@
 void topology_normalize_cpu_scale(void);
 int topology_update_cpu_topology(void);
 
+#ifdef CONFIG_ACPI_CPPC_LIB
+void topology_init_cpu_capacity_cppc(void);
+#endif
+
 struct device_node;
 bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
 
@@ -56,16 +60,18 @@ static inline unsigned long topology_get_thermal_pressure(int cpu)
 	return per_cpu(thermal_pressure, cpu);
 }
 
-void topology_set_thermal_pressure(const struct cpumask *cpus,
-				   unsigned long th_pressure);
+void topology_update_thermal_pressure(const struct cpumask *cpus,
+				      unsigned long capped_freq);
 
 struct cpu_topology {
 	int thread_id;
 	int core_id;
+	int cluster_id;
 	int package_id;
 	int llc_id;
 	cpumask_t thread_sibling;
 	cpumask_t core_sibling;
+	cpumask_t cluster_sibling;
 	cpumask_t llc_sibling;
 };
 
@@ -73,13 +79,16 @@ struct cpu_topology {
 extern struct cpu_topology cpu_topology[NR_CPUS];
 
 #define topology_physical_package_id(cpu)	(cpu_topology[cpu].package_id)
+#define topology_cluster_id(cpu)	(cpu_topology[cpu].cluster_id)
 #define topology_core_id(cpu)		(cpu_topology[cpu].core_id)
 #define topology_core_cpumask(cpu)	(&cpu_topology[cpu].core_sibling)
 #define topology_sibling_cpumask(cpu)	(&cpu_topology[cpu].thread_sibling)
+#define topology_cluster_cpumask(cpu)	(&cpu_topology[cpu].cluster_sibling)
 #define topology_llc_cpumask(cpu)	(&cpu_topology[cpu].llc_sibling)
 void init_cpu_topology(void);
 void store_cpu_topology(unsigned int cpuid);
 const struct cpumask *cpu_coregroup_mask(int cpu);
+const struct cpumask *cpu_clustergroup_mask(int cpu);
 void update_siblings_masks(unsigned int cpu);
 void remove_cpu_topology(unsigned int cpuid);
 void reset_cpu_topology(void);
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h
index 63ccb5252190..220c8c60e021 100644
--- a/include/linux/arm-smccc.h
+++ b/include/linux/arm-smccc.h
@@ -92,6 +92,11 @@
 			   ARM_SMCCC_SMC_32,				\
 			   0, 0x7fff)
 
+#define ARM_SMCCC_ARCH_WORKAROUND_3					\
+	ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL,				\
+			   ARM_SMCCC_SMC_32,				\
+			   0, 0x3fff)
+
 #define ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID				\
 	ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL,				\
 			   ARM_SMCCC_SMC_32,				\
diff --git a/include/linux/arm_ffa.h b/include/linux/arm_ffa.h
index 505c679b6a9b..85651e41ded8 100644
--- a/include/linux/arm_ffa.h
+++ b/include/linux/arm_ffa.h
@@ -262,6 +262,8 @@ struct ffa_dev_ops {
 	int (*memory_reclaim)(u64 g_handle, u32 flags);
 	int (*memory_share)(struct ffa_device *dev,
 			    struct ffa_mem_ops_args *args);
+	int (*memory_lend)(struct ffa_device *dev,
+			   struct ffa_mem_ops_args *args);
 };
 
 #endif /* _LINUX_ARM_FFA_H */
diff --git a/include/linux/arm_sdei.h b/include/linux/arm_sdei.h
index 0a241c5c911d..14dc461b0e82 100644
--- a/include/linux/arm_sdei.h
+++ b/include/linux/arm_sdei.h
@@ -46,9 +46,11 @@ int sdei_unregister_ghes(struct ghes *ghes);
 /* For use by arch code when CPU hotplug notifiers are not appropriate. */
 int sdei_mask_local_cpu(void);
 int sdei_unmask_local_cpu(void);
+void __init sdei_init(void);
 #else
 static inline int sdei_mask_local_cpu(void) { return 0; }
 static inline int sdei_unmask_local_cpu(void) { return 0; }
+static inline void sdei_init(void) { }
 #endif /* CONFIG_ARM_SDE_INTERFACE */
 
 
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 1b44f40c7700..21292b5bbb55 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -324,6 +324,7 @@ enum {
 	ATA_LOG_NCQ_NON_DATA	= 0x12,
 	ATA_LOG_NCQ_SEND_RECV	= 0x13,
 	ATA_LOG_IDENTIFY_DEVICE	= 0x30,
+	ATA_LOG_CONCURRENT_POSITIONING_RANGES = 0x47,
 
 	/* Identify device log pages: */
 	ATA_LOG_SECURITY	  = 0x06,
diff --git a/include/linux/atalk.h b/include/linux/atalk.h
index f6034ba774be..a55bfc6567d0 100644
--- a/include/linux/atalk.h
+++ b/include/linux/atalk.h
@@ -113,7 +113,7 @@ extern int aarp_proto_init(void);
 /* Inter module exports */
 
 /* Give a device find its atif control structure */
-#if IS_ENABLED(CONFIG_IRDA) || IS_ENABLED(CONFIG_ATALK)
+#if IS_ENABLED(CONFIG_ATALK)
 static inline struct atalk_iface *atalk_find_dev(struct net_device *dev)
 {
 	return dev->atalk_ptr;
diff --git a/include/linux/atomic/atomic-arch-fallback.h b/include/linux/atomic/atomic-arch-fallback.h
index a3dba31df01e..6db58d180866 100644
--- a/include/linux/atomic/atomic-arch-fallback.h
+++ b/include/linux/atomic/atomic-arch-fallback.h
@@ -151,7 +151,16 @@
 static __always_inline int
 arch_atomic_read_acquire(const atomic_t *v)
 {
-	return smp_load_acquire(&(v)->counter);
+	int ret;
+
+	if (__native_word(atomic_t)) {
+		ret = smp_load_acquire(&(v)->counter);
+	} else {
+		ret = arch_atomic_read(v);
+		__atomic_acquire_fence();
+	}
+
+	return ret;
 }
 #define arch_atomic_read_acquire arch_atomic_read_acquire
 #endif
@@ -160,7 +169,12 @@ arch_atomic_read_acquire(const atomic_t *v)
 static __always_inline void
 arch_atomic_set_release(atomic_t *v, int i)
 {
-	smp_store_release(&(v)->counter, i);
+	if (__native_word(atomic_t)) {
+		smp_store_release(&(v)->counter, i);
+	} else {
+		__atomic_release_fence();
+		arch_atomic_set(v, i);
+	}
 }
 #define arch_atomic_set_release arch_atomic_set_release
 #endif
@@ -1258,7 +1272,16 @@ arch_atomic_dec_if_positive(atomic_t *v)
 static __always_inline s64
 arch_atomic64_read_acquire(const atomic64_t *v)
 {
-	return smp_load_acquire(&(v)->counter);
+	s64 ret;
+
+	if (__native_word(atomic64_t)) {
+		ret = smp_load_acquire(&(v)->counter);
+	} else {
+		ret = arch_atomic64_read(v);
+		__atomic_acquire_fence();
+	}
+
+	return ret;
 }
 #define arch_atomic64_read_acquire arch_atomic64_read_acquire
 #endif
@@ -1267,7 +1290,12 @@ arch_atomic64_read_acquire(const atomic64_t *v)
 static __always_inline void
 arch_atomic64_set_release(atomic64_t *v, s64 i)
 {
-	smp_store_release(&(v)->counter, i);
+	if (__native_word(atomic64_t)) {
+		smp_store_release(&(v)->counter, i);
+	} else {
+		__atomic_release_fence();
+		arch_atomic64_set(v, i);
+	}
 }
 #define arch_atomic64_set_release arch_atomic64_set_release
 #endif
@@ -2358,4 +2386,4 @@ arch_atomic64_dec_if_positive(atomic64_t *v)
 #endif
 
 #endif /* _LINUX_ATOMIC_FALLBACK_H */
-// cca554917d7ea73d5e3e7397dd70c484cad9b2c4
+// 8e2cc06bc0d2c0967d2f8424762bd48555ee40ae
diff --git a/include/linux/atomic/atomic-instrumented.h b/include/linux/atomic/atomic-instrumented.h
index a0f654370da3..5d69b143c28e 100644
--- a/include/linux/atomic/atomic-instrumented.h
+++ b/include/linux/atomic/atomic-instrumented.h
@@ -45,6 +45,7 @@ atomic_set(atomic_t *v, int i)
 static __always_inline void
 atomic_set_release(atomic_t *v, int i)
 {
+	kcsan_release();
 	instrument_atomic_write(v, sizeof(*v));
 	arch_atomic_set_release(v, i);
 }
@@ -59,6 +60,7 @@ atomic_add(int i, atomic_t *v)
 static __always_inline int
 atomic_add_return(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_add_return(i, v);
 }
@@ -73,6 +75,7 @@ atomic_add_return_acquire(int i, atomic_t *v)
 static __always_inline int
 atomic_add_return_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_add_return_release(i, v);
 }
@@ -87,6 +90,7 @@ atomic_add_return_relaxed(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_add(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_add(i, v);
 }
@@ -101,6 +105,7 @@ atomic_fetch_add_acquire(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_add_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_add_release(i, v);
 }
@@ -122,6 +127,7 @@ atomic_sub(int i, atomic_t *v)
 static __always_inline int
 atomic_sub_return(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_sub_return(i, v);
 }
@@ -136,6 +142,7 @@ atomic_sub_return_acquire(int i, atomic_t *v)
 static __always_inline int
 atomic_sub_return_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_sub_return_release(i, v);
 }
@@ -150,6 +157,7 @@ atomic_sub_return_relaxed(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_sub(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_sub(i, v);
 }
@@ -164,6 +172,7 @@ atomic_fetch_sub_acquire(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_sub_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_sub_release(i, v);
 }
@@ -185,6 +194,7 @@ atomic_inc(atomic_t *v)
 static __always_inline int
 atomic_inc_return(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_return(v);
 }
@@ -199,6 +209,7 @@ atomic_inc_return_acquire(atomic_t *v)
 static __always_inline int
 atomic_inc_return_release(atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_return_release(v);
 }
@@ -213,6 +224,7 @@ atomic_inc_return_relaxed(atomic_t *v)
 static __always_inline int
 atomic_fetch_inc(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_inc(v);
 }
@@ -227,6 +239,7 @@ atomic_fetch_inc_acquire(atomic_t *v)
 static __always_inline int
 atomic_fetch_inc_release(atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_inc_release(v);
 }
@@ -248,6 +261,7 @@ atomic_dec(atomic_t *v)
 static __always_inline int
 atomic_dec_return(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_return(v);
 }
@@ -262,6 +276,7 @@ atomic_dec_return_acquire(atomic_t *v)
 static __always_inline int
 atomic_dec_return_release(atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_return_release(v);
 }
@@ -276,6 +291,7 @@ atomic_dec_return_relaxed(atomic_t *v)
 static __always_inline int
 atomic_fetch_dec(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_dec(v);
 }
@@ -290,6 +306,7 @@ atomic_fetch_dec_acquire(atomic_t *v)
 static __always_inline int
 atomic_fetch_dec_release(atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_dec_release(v);
 }
@@ -311,6 +328,7 @@ atomic_and(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_and(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_and(i, v);
 }
@@ -325,6 +343,7 @@ atomic_fetch_and_acquire(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_and_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_and_release(i, v);
 }
@@ -346,6 +365,7 @@ atomic_andnot(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_andnot(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_andnot(i, v);
 }
@@ -360,6 +380,7 @@ atomic_fetch_andnot_acquire(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_andnot_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_andnot_release(i, v);
 }
@@ -381,6 +402,7 @@ atomic_or(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_or(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_or(i, v);
 }
@@ -395,6 +417,7 @@ atomic_fetch_or_acquire(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_or_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_or_release(i, v);
 }
@@ -416,6 +439,7 @@ atomic_xor(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_xor(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_xor(i, v);
 }
@@ -430,6 +454,7 @@ atomic_fetch_xor_acquire(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_xor_release(int i, atomic_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_xor_release(i, v);
 }
@@ -444,6 +469,7 @@ atomic_fetch_xor_relaxed(int i, atomic_t *v)
 static __always_inline int
 atomic_xchg(atomic_t *v, int i)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_xchg(v, i);
 }
@@ -458,6 +484,7 @@ atomic_xchg_acquire(atomic_t *v, int i)
 static __always_inline int
 atomic_xchg_release(atomic_t *v, int i)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_xchg_release(v, i);
 }
@@ -472,6 +499,7 @@ atomic_xchg_relaxed(atomic_t *v, int i)
 static __always_inline int
 atomic_cmpxchg(atomic_t *v, int old, int new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_cmpxchg(v, old, new);
 }
@@ -486,6 +514,7 @@ atomic_cmpxchg_acquire(atomic_t *v, int old, int new)
 static __always_inline int
 atomic_cmpxchg_release(atomic_t *v, int old, int new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_cmpxchg_release(v, old, new);
 }
@@ -500,6 +529,7 @@ atomic_cmpxchg_relaxed(atomic_t *v, int old, int new)
 static __always_inline bool
 atomic_try_cmpxchg(atomic_t *v, int *old, int new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_atomic_read_write(old, sizeof(*old));
 	return arch_atomic_try_cmpxchg(v, old, new);
@@ -516,6 +546,7 @@ atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new)
 static __always_inline bool
 atomic_try_cmpxchg_release(atomic_t *v, int *old, int new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_atomic_read_write(old, sizeof(*old));
 	return arch_atomic_try_cmpxchg_release(v, old, new);
@@ -532,6 +563,7 @@ atomic_try_cmpxchg_relaxed(atomic_t *v, int *old, int new)
 static __always_inline bool
 atomic_sub_and_test(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_sub_and_test(i, v);
 }
@@ -539,6 +571,7 @@ atomic_sub_and_test(int i, atomic_t *v)
 static __always_inline bool
 atomic_dec_and_test(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_and_test(v);
 }
@@ -546,6 +579,7 @@ atomic_dec_and_test(atomic_t *v)
 static __always_inline bool
 atomic_inc_and_test(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_and_test(v);
 }
@@ -553,6 +587,7 @@ atomic_inc_and_test(atomic_t *v)
 static __always_inline bool
 atomic_add_negative(int i, atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_add_negative(i, v);
 }
@@ -560,6 +595,7 @@ atomic_add_negative(int i, atomic_t *v)
 static __always_inline int
 atomic_fetch_add_unless(atomic_t *v, int a, int u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_fetch_add_unless(v, a, u);
 }
@@ -567,6 +603,7 @@ atomic_fetch_add_unless(atomic_t *v, int a, int u)
 static __always_inline bool
 atomic_add_unless(atomic_t *v, int a, int u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_add_unless(v, a, u);
 }
@@ -574,6 +611,7 @@ atomic_add_unless(atomic_t *v, int a, int u)
 static __always_inline bool
 atomic_inc_not_zero(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_not_zero(v);
 }
@@ -581,6 +619,7 @@ atomic_inc_not_zero(atomic_t *v)
 static __always_inline bool
 atomic_inc_unless_negative(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_inc_unless_negative(v);
 }
@@ -588,6 +627,7 @@ atomic_inc_unless_negative(atomic_t *v)
 static __always_inline bool
 atomic_dec_unless_positive(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_unless_positive(v);
 }
@@ -595,6 +635,7 @@ atomic_dec_unless_positive(atomic_t *v)
 static __always_inline int
 atomic_dec_if_positive(atomic_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_dec_if_positive(v);
 }
@@ -623,6 +664,7 @@ atomic64_set(atomic64_t *v, s64 i)
 static __always_inline void
 atomic64_set_release(atomic64_t *v, s64 i)
 {
+	kcsan_release();
 	instrument_atomic_write(v, sizeof(*v));
 	arch_atomic64_set_release(v, i);
 }
@@ -637,6 +679,7 @@ atomic64_add(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_add_return(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_add_return(i, v);
 }
@@ -651,6 +694,7 @@ atomic64_add_return_acquire(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_add_return_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_add_return_release(i, v);
 }
@@ -665,6 +709,7 @@ atomic64_add_return_relaxed(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_add(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_add(i, v);
 }
@@ -679,6 +724,7 @@ atomic64_fetch_add_acquire(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_add_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_add_release(i, v);
 }
@@ -700,6 +746,7 @@ atomic64_sub(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_sub_return(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_sub_return(i, v);
 }
@@ -714,6 +761,7 @@ atomic64_sub_return_acquire(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_sub_return_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_sub_return_release(i, v);
 }
@@ -728,6 +776,7 @@ atomic64_sub_return_relaxed(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_sub(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_sub(i, v);
 }
@@ -742,6 +791,7 @@ atomic64_fetch_sub_acquire(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_sub_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_sub_release(i, v);
 }
@@ -763,6 +813,7 @@ atomic64_inc(atomic64_t *v)
 static __always_inline s64
 atomic64_inc_return(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_return(v);
 }
@@ -777,6 +828,7 @@ atomic64_inc_return_acquire(atomic64_t *v)
 static __always_inline s64
 atomic64_inc_return_release(atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_return_release(v);
 }
@@ -791,6 +843,7 @@ atomic64_inc_return_relaxed(atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_inc(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_inc(v);
 }
@@ -805,6 +858,7 @@ atomic64_fetch_inc_acquire(atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_inc_release(atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_inc_release(v);
 }
@@ -826,6 +880,7 @@ atomic64_dec(atomic64_t *v)
 static __always_inline s64
 atomic64_dec_return(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_return(v);
 }
@@ -840,6 +895,7 @@ atomic64_dec_return_acquire(atomic64_t *v)
 static __always_inline s64
 atomic64_dec_return_release(atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_return_release(v);
 }
@@ -854,6 +910,7 @@ atomic64_dec_return_relaxed(atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_dec(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_dec(v);
 }
@@ -868,6 +925,7 @@ atomic64_fetch_dec_acquire(atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_dec_release(atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_dec_release(v);
 }
@@ -889,6 +947,7 @@ atomic64_and(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_and(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_and(i, v);
 }
@@ -903,6 +962,7 @@ atomic64_fetch_and_acquire(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_and_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_and_release(i, v);
 }
@@ -924,6 +984,7 @@ atomic64_andnot(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_andnot(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_andnot(i, v);
 }
@@ -938,6 +999,7 @@ atomic64_fetch_andnot_acquire(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_andnot_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_andnot_release(i, v);
 }
@@ -959,6 +1021,7 @@ atomic64_or(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_or(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_or(i, v);
 }
@@ -973,6 +1036,7 @@ atomic64_fetch_or_acquire(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_or_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_or_release(i, v);
 }
@@ -994,6 +1058,7 @@ atomic64_xor(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_xor(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_xor(i, v);
 }
@@ -1008,6 +1073,7 @@ atomic64_fetch_xor_acquire(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_xor_release(s64 i, atomic64_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_xor_release(i, v);
 }
@@ -1022,6 +1088,7 @@ atomic64_fetch_xor_relaxed(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_xchg(atomic64_t *v, s64 i)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_xchg(v, i);
 }
@@ -1036,6 +1103,7 @@ atomic64_xchg_acquire(atomic64_t *v, s64 i)
 static __always_inline s64
 atomic64_xchg_release(atomic64_t *v, s64 i)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_xchg_release(v, i);
 }
@@ -1050,6 +1118,7 @@ atomic64_xchg_relaxed(atomic64_t *v, s64 i)
 static __always_inline s64
 atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_cmpxchg(v, old, new);
 }
@@ -1064,6 +1133,7 @@ atomic64_cmpxchg_acquire(atomic64_t *v, s64 old, s64 new)
 static __always_inline s64
 atomic64_cmpxchg_release(atomic64_t *v, s64 old, s64 new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_cmpxchg_release(v, old, new);
 }
@@ -1078,6 +1148,7 @@ atomic64_cmpxchg_relaxed(atomic64_t *v, s64 old, s64 new)
 static __always_inline bool
 atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_atomic_read_write(old, sizeof(*old));
 	return arch_atomic64_try_cmpxchg(v, old, new);
@@ -1094,6 +1165,7 @@ atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new)
 static __always_inline bool
 atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_atomic_read_write(old, sizeof(*old));
 	return arch_atomic64_try_cmpxchg_release(v, old, new);
@@ -1110,6 +1182,7 @@ atomic64_try_cmpxchg_relaxed(atomic64_t *v, s64 *old, s64 new)
 static __always_inline bool
 atomic64_sub_and_test(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_sub_and_test(i, v);
 }
@@ -1117,6 +1190,7 @@ atomic64_sub_and_test(s64 i, atomic64_t *v)
 static __always_inline bool
 atomic64_dec_and_test(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_and_test(v);
 }
@@ -1124,6 +1198,7 @@ atomic64_dec_and_test(atomic64_t *v)
 static __always_inline bool
 atomic64_inc_and_test(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_and_test(v);
 }
@@ -1131,6 +1206,7 @@ atomic64_inc_and_test(atomic64_t *v)
 static __always_inline bool
 atomic64_add_negative(s64 i, atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_add_negative(i, v);
 }
@@ -1138,6 +1214,7 @@ atomic64_add_negative(s64 i, atomic64_t *v)
 static __always_inline s64
 atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_fetch_add_unless(v, a, u);
 }
@@ -1145,6 +1222,7 @@ atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u)
 static __always_inline bool
 atomic64_add_unless(atomic64_t *v, s64 a, s64 u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_add_unless(v, a, u);
 }
@@ -1152,6 +1230,7 @@ atomic64_add_unless(atomic64_t *v, s64 a, s64 u)
 static __always_inline bool
 atomic64_inc_not_zero(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_not_zero(v);
 }
@@ -1159,6 +1238,7 @@ atomic64_inc_not_zero(atomic64_t *v)
 static __always_inline bool
 atomic64_inc_unless_negative(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_inc_unless_negative(v);
 }
@@ -1166,6 +1246,7 @@ atomic64_inc_unless_negative(atomic64_t *v)
 static __always_inline bool
 atomic64_dec_unless_positive(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_unless_positive(v);
 }
@@ -1173,6 +1254,7 @@ atomic64_dec_unless_positive(atomic64_t *v)
 static __always_inline s64
 atomic64_dec_if_positive(atomic64_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic64_dec_if_positive(v);
 }
@@ -1201,6 +1283,7 @@ atomic_long_set(atomic_long_t *v, long i)
 static __always_inline void
 atomic_long_set_release(atomic_long_t *v, long i)
 {
+	kcsan_release();
 	instrument_atomic_write(v, sizeof(*v));
 	arch_atomic_long_set_release(v, i);
 }
@@ -1215,6 +1298,7 @@ atomic_long_add(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_add_return(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_add_return(i, v);
 }
@@ -1229,6 +1313,7 @@ atomic_long_add_return_acquire(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_add_return_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_add_return_release(i, v);
 }
@@ -1243,6 +1328,7 @@ atomic_long_add_return_relaxed(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_add(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_add(i, v);
 }
@@ -1257,6 +1343,7 @@ atomic_long_fetch_add_acquire(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_add_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_add_release(i, v);
 }
@@ -1278,6 +1365,7 @@ atomic_long_sub(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_sub_return(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_sub_return(i, v);
 }
@@ -1292,6 +1380,7 @@ atomic_long_sub_return_acquire(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_sub_return_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_sub_return_release(i, v);
 }
@@ -1306,6 +1395,7 @@ atomic_long_sub_return_relaxed(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_sub(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_sub(i, v);
 }
@@ -1320,6 +1410,7 @@ atomic_long_fetch_sub_acquire(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_sub_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_sub_release(i, v);
 }
@@ -1341,6 +1432,7 @@ atomic_long_inc(atomic_long_t *v)
 static __always_inline long
 atomic_long_inc_return(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_return(v);
 }
@@ -1355,6 +1447,7 @@ atomic_long_inc_return_acquire(atomic_long_t *v)
 static __always_inline long
 atomic_long_inc_return_release(atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_return_release(v);
 }
@@ -1369,6 +1462,7 @@ atomic_long_inc_return_relaxed(atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_inc(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_inc(v);
 }
@@ -1383,6 +1477,7 @@ atomic_long_fetch_inc_acquire(atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_inc_release(atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_inc_release(v);
 }
@@ -1404,6 +1499,7 @@ atomic_long_dec(atomic_long_t *v)
 static __always_inline long
 atomic_long_dec_return(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_return(v);
 }
@@ -1418,6 +1514,7 @@ atomic_long_dec_return_acquire(atomic_long_t *v)
 static __always_inline long
 atomic_long_dec_return_release(atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_return_release(v);
 }
@@ -1432,6 +1529,7 @@ atomic_long_dec_return_relaxed(atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_dec(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_dec(v);
 }
@@ -1446,6 +1544,7 @@ atomic_long_fetch_dec_acquire(atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_dec_release(atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_dec_release(v);
 }
@@ -1467,6 +1566,7 @@ atomic_long_and(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_and(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_and(i, v);
 }
@@ -1481,6 +1581,7 @@ atomic_long_fetch_and_acquire(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_and_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_and_release(i, v);
 }
@@ -1502,6 +1603,7 @@ atomic_long_andnot(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_andnot(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_andnot(i, v);
 }
@@ -1516,6 +1618,7 @@ atomic_long_fetch_andnot_acquire(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_andnot_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_andnot_release(i, v);
 }
@@ -1537,6 +1640,7 @@ atomic_long_or(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_or(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_or(i, v);
 }
@@ -1551,6 +1655,7 @@ atomic_long_fetch_or_acquire(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_or_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_or_release(i, v);
 }
@@ -1572,6 +1677,7 @@ atomic_long_xor(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_xor(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_xor(i, v);
 }
@@ -1586,6 +1692,7 @@ atomic_long_fetch_xor_acquire(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_xor_release(long i, atomic_long_t *v)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_xor_release(i, v);
 }
@@ -1600,6 +1707,7 @@ atomic_long_fetch_xor_relaxed(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_xchg(atomic_long_t *v, long i)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_xchg(v, i);
 }
@@ -1614,6 +1722,7 @@ atomic_long_xchg_acquire(atomic_long_t *v, long i)
 static __always_inline long
 atomic_long_xchg_release(atomic_long_t *v, long i)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_xchg_release(v, i);
 }
@@ -1628,6 +1737,7 @@ atomic_long_xchg_relaxed(atomic_long_t *v, long i)
 static __always_inline long
 atomic_long_cmpxchg(atomic_long_t *v, long old, long new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_cmpxchg(v, old, new);
 }
@@ -1642,6 +1752,7 @@ atomic_long_cmpxchg_acquire(atomic_long_t *v, long old, long new)
 static __always_inline long
 atomic_long_cmpxchg_release(atomic_long_t *v, long old, long new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_cmpxchg_release(v, old, new);
 }
@@ -1656,6 +1767,7 @@ atomic_long_cmpxchg_relaxed(atomic_long_t *v, long old, long new)
 static __always_inline bool
 atomic_long_try_cmpxchg(atomic_long_t *v, long *old, long new)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_atomic_read_write(old, sizeof(*old));
 	return arch_atomic_long_try_cmpxchg(v, old, new);
@@ -1672,6 +1784,7 @@ atomic_long_try_cmpxchg_acquire(atomic_long_t *v, long *old, long new)
 static __always_inline bool
 atomic_long_try_cmpxchg_release(atomic_long_t *v, long *old, long new)
 {
+	kcsan_release();
 	instrument_atomic_read_write(v, sizeof(*v));
 	instrument_atomic_read_write(old, sizeof(*old));
 	return arch_atomic_long_try_cmpxchg_release(v, old, new);
@@ -1688,6 +1801,7 @@ atomic_long_try_cmpxchg_relaxed(atomic_long_t *v, long *old, long new)
 static __always_inline bool
 atomic_long_sub_and_test(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_sub_and_test(i, v);
 }
@@ -1695,6 +1809,7 @@ atomic_long_sub_and_test(long i, atomic_long_t *v)
 static __always_inline bool
 atomic_long_dec_and_test(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_and_test(v);
 }
@@ -1702,6 +1817,7 @@ atomic_long_dec_and_test(atomic_long_t *v)
 static __always_inline bool
 atomic_long_inc_and_test(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_and_test(v);
 }
@@ -1709,6 +1825,7 @@ atomic_long_inc_and_test(atomic_long_t *v)
 static __always_inline bool
 atomic_long_add_negative(long i, atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_add_negative(i, v);
 }
@@ -1716,6 +1833,7 @@ atomic_long_add_negative(long i, atomic_long_t *v)
 static __always_inline long
 atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_fetch_add_unless(v, a, u);
 }
@@ -1723,6 +1841,7 @@ atomic_long_fetch_add_unless(atomic_long_t *v, long a, long u)
 static __always_inline bool
 atomic_long_add_unless(atomic_long_t *v, long a, long u)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_add_unless(v, a, u);
 }
@@ -1730,6 +1849,7 @@ atomic_long_add_unless(atomic_long_t *v, long a, long u)
 static __always_inline bool
 atomic_long_inc_not_zero(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_not_zero(v);
 }
@@ -1737,6 +1857,7 @@ atomic_long_inc_not_zero(atomic_long_t *v)
 static __always_inline bool
 atomic_long_inc_unless_negative(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_inc_unless_negative(v);
 }
@@ -1744,6 +1865,7 @@ atomic_long_inc_unless_negative(atomic_long_t *v)
 static __always_inline bool
 atomic_long_dec_unless_positive(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_unless_positive(v);
 }
@@ -1751,6 +1873,7 @@ atomic_long_dec_unless_positive(atomic_long_t *v)
 static __always_inline long
 atomic_long_dec_if_positive(atomic_long_t *v)
 {
+	kcsan_mb();
 	instrument_atomic_read_write(v, sizeof(*v));
 	return arch_atomic_long_dec_if_positive(v);
 }
@@ -1758,6 +1881,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 #define xchg(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_xchg(__ai_ptr, __VA_ARGS__); \
 })
@@ -1772,6 +1896,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 #define xchg_release(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_release(); \
 	instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_xchg_release(__ai_ptr, __VA_ARGS__); \
 })
@@ -1786,6 +1911,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 #define cmpxchg(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg(__ai_ptr, __VA_ARGS__); \
 })
@@ -1800,6 +1926,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 #define cmpxchg_release(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_release(); \
 	instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg_release(__ai_ptr, __VA_ARGS__); \
 })
@@ -1814,6 +1941,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 #define cmpxchg64(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg64(__ai_ptr, __VA_ARGS__); \
 })
@@ -1828,6 +1956,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 #define cmpxchg64_release(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_release(); \
 	instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_cmpxchg64_release(__ai_ptr, __VA_ARGS__); \
 })
@@ -1843,6 +1972,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
 	typeof(oldp) __ai_oldp = (oldp); \
+	kcsan_mb(); \
 	instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
 	arch_try_cmpxchg(__ai_ptr, __ai_oldp, __VA_ARGS__); \
@@ -1861,6 +1991,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
 	typeof(oldp) __ai_oldp = (oldp); \
+	kcsan_release(); \
 	instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	instrument_atomic_write(__ai_oldp, sizeof(*__ai_oldp)); \
 	arch_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \
@@ -1892,6 +2023,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 #define sync_cmpxchg(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_write(__ai_ptr, sizeof(*__ai_ptr)); \
 	arch_sync_cmpxchg(__ai_ptr, __VA_ARGS__); \
 })
@@ -1899,6 +2031,7 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 #define cmpxchg_double(ptr, ...) \
 ({ \
 	typeof(ptr) __ai_ptr = (ptr); \
+	kcsan_mb(); \
 	instrument_atomic_write(__ai_ptr, 2 * sizeof(*__ai_ptr)); \
 	arch_cmpxchg_double(__ai_ptr, __VA_ARGS__); \
 })
@@ -1912,4 +2045,4 @@ atomic_long_dec_if_positive(atomic_long_t *v)
 })
 
 #endif /* _LINUX_ATOMIC_INSTRUMENTED_H */
-// 2a9553f0a9d5619f19151092df5cabbbf16ce835
+// 87c974b93032afd42143613434d1a7788fa598f9
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 82b7c1116a85..cece70231138 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -11,6 +11,7 @@
 
 #include <linux/sched.h>
 #include <linux/ptrace.h>
+#include <linux/audit_arch.h>
 #include <uapi/linux/audit.h>
 #include <uapi/linux/netfilter/nf_tables.h>
 
@@ -286,7 +287,10 @@ static inline int audit_signal_info(int sig, struct task_struct *t)
 /* These are defined in auditsc.c */
 				/* Public API */
 extern int  audit_alloc(struct task_struct *task);
+extern int  audit_alloc_kernel(struct task_struct *task);
 extern void __audit_free(struct task_struct *task);
+extern void __audit_uring_entry(u8 op);
+extern void __audit_uring_exit(int success, long code);
 extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1,
 				  unsigned long a2, unsigned long a3);
 extern void __audit_syscall_exit(int ret_success, long ret_value);
@@ -323,6 +327,21 @@ static inline void audit_free(struct task_struct *task)
 	if (unlikely(task->audit_context))
 		__audit_free(task);
 }
+static inline void audit_uring_entry(u8 op)
+{
+	/*
+	 * We intentionally check audit_context() before audit_enabled as most
+	 * Linux systems (as of ~2021) rely on systemd which forces audit to
+	 * be enabled regardless of the user's audit configuration.
+	 */
+	if (unlikely(audit_context() && audit_enabled))
+		__audit_uring_entry(op);
+}
+static inline void audit_uring_exit(int success, long code)
+{
+	if (unlikely(audit_context()))
+		__audit_uring_exit(success, code);
+}
 static inline void audit_syscall_entry(int major, unsigned long a0,
 				       unsigned long a1, unsigned long a2,
 				       unsigned long a3)
@@ -398,6 +417,7 @@ extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
 				  const struct cred *old);
 extern void __audit_log_capset(const struct cred *new, const struct cred *old);
 extern void __audit_mmap_fd(int fd, int flags);
+extern void __audit_openat2_how(struct open_how *how);
 extern void __audit_log_kern_module(char *name);
 extern void __audit_fanotify(unsigned int response);
 extern void __audit_tk_injoffset(struct timespec64 offset);
@@ -494,6 +514,12 @@ static inline void audit_mmap_fd(int fd, int flags)
 		__audit_mmap_fd(fd, flags);
 }
 
+static inline void audit_openat2_how(struct open_how *how)
+{
+	if (unlikely(!audit_dummy_context()))
+		__audit_openat2_how(how);
+}
+
 static inline void audit_log_kern_module(char *name)
 {
 	if (!audit_dummy_context())
@@ -554,8 +580,16 @@ static inline int audit_alloc(struct task_struct *task)
 {
 	return 0;
 }
+static inline int audit_alloc_kernel(struct task_struct *task)
+{
+	return 0;
+}
 static inline void audit_free(struct task_struct *task)
 { }
+static inline void audit_uring_entry(u8 op)
+{ }
+static inline void audit_uring_exit(int success, long code)
+{ }
 static inline void audit_syscall_entry(int major, unsigned long a0,
 				       unsigned long a1, unsigned long a2,
 				       unsigned long a3)
@@ -645,6 +679,9 @@ static inline void audit_log_capset(const struct cred *new,
 static inline void audit_mmap_fd(int fd, int flags)
 { }
 
+static inline void audit_openat2_how(struct open_how *how)
+{ }
+
 static inline void audit_log_kern_module(char *name)
 {
 }
diff --git a/include/linux/audit_arch.h b/include/linux/audit_arch.h
new file mode 100644
index 000000000000..8fdb1afe251a
--- /dev/null
+++ b/include/linux/audit_arch.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* audit_arch.h -- Arch layer specific support for audit
+ *
+ * Copyright 2021 Red Hat Inc., Durham, North Carolina.
+ * All Rights Reserved.
+ *
+ * Author: Richard Guy Briggs <rgb@redhat.com>
+ */
+#ifndef _LINUX_AUDIT_ARCH_H_
+#define _LINUX_AUDIT_ARCH_H_
+
+enum auditsc_class_t {
+	AUDITSC_NATIVE = 0,
+	AUDITSC_COMPAT,
+	AUDITSC_OPEN,
+	AUDITSC_OPENAT,
+	AUDITSC_SOCKETCALL,
+	AUDITSC_EXECVE,
+	AUDITSC_OPENAT2,
+
+	AUDITSC_NVALS /* count */
+};
+
+#endif
diff --git a/include/linux/auxiliary_bus.h b/include/linux/auxiliary_bus.h
index fc51d45f106b..de21d9d24a95 100644
--- a/include/linux/auxiliary_bus.h
+++ b/include/linux/auxiliary_bus.h
@@ -11,12 +11,172 @@
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 
+/**
+ * DOC: DEVICE_LIFESPAN
+ *
+ * The registering driver is the entity that allocates memory for the
+ * auxiliary_device and registers it on the auxiliary bus.  It is important to
+ * note that, as opposed to the platform bus, the registering driver is wholly
+ * responsible for the management of the memory used for the device object.
+ *
+ * To be clear the memory for the auxiliary_device is freed in the release()
+ * callback defined by the registering driver.  The registering driver should
+ * only call auxiliary_device_delete() and then auxiliary_device_uninit() when
+ * it is done with the device.  The release() function is then automatically
+ * called if and when other code releases their reference to the devices.
+ *
+ * A parent object, defined in the shared header file, contains the
+ * auxiliary_device.  It also contains a pointer to the shared object(s), which
+ * also is defined in the shared header.  Both the parent object and the shared
+ * object(s) are allocated by the registering driver.  This layout allows the
+ * auxiliary_driver's registering module to perform a container_of() call to go
+ * from the pointer to the auxiliary_device, that is passed during the call to
+ * the auxiliary_driver's probe function, up to the parent object, and then
+ * have access to the shared object(s).
+ *
+ * The memory for the shared object(s) must have a lifespan equal to, or
+ * greater than, the lifespan of the memory for the auxiliary_device.  The
+ * auxiliary_driver should only consider that the shared object is valid as
+ * long as the auxiliary_device is still registered on the auxiliary bus.  It
+ * is up to the registering driver to manage (e.g. free or keep available) the
+ * memory for the shared object beyond the life of the auxiliary_device.
+ *
+ * The registering driver must unregister all auxiliary devices before its own
+ * driver.remove() is completed.  An easy way to ensure this is to use the
+ * devm_add_action_or_reset() call to register a function against the parent
+ * device which unregisters the auxiliary device object(s).
+ *
+ * Finally, any operations which operate on the auxiliary devices must continue
+ * to function (if only to return an error) after the registering driver
+ * unregisters the auxiliary device.
+ */
+
+/**
+ * struct auxiliary_device - auxiliary device object.
+ * @dev: Device,
+ *       The release and parent fields of the device structure must be filled
+ *       in
+ * @name: Match name found by the auxiliary device driver,
+ * @id: unique identitier if multiple devices of the same name are exported,
+ *
+ * An auxiliary_device represents a part of its parent device's functionality.
+ * It is given a name that, combined with the registering drivers
+ * KBUILD_MODNAME, creates a match_name that is used for driver binding, and an
+ * id that combined with the match_name provide a unique name to register with
+ * the bus subsystem.  For example, a driver registering an auxiliary device is
+ * named 'foo_mod.ko' and the subdevice is named 'foo_dev'.  The match name is
+ * therefore 'foo_mod.foo_dev'.
+ *
+ * Registering an auxiliary_device is a three-step process.
+ *
+ * First, a 'struct auxiliary_device' needs to be defined or allocated for each
+ * sub-device desired.  The name, id, dev.release, and dev.parent fields of
+ * this structure must be filled in as follows.
+ *
+ * The 'name' field is to be given a name that is recognized by the auxiliary
+ * driver.  If two auxiliary_devices with the same match_name, eg
+ * "foo_mod.foo_dev", are registered onto the bus, they must have unique id
+ * values (e.g. "x" and "y") so that the registered devices names are
+ * "foo_mod.foo_dev.x" and "foo_mod.foo_dev.y".  If match_name + id are not
+ * unique, then the device_add fails and generates an error message.
+ *
+ * The auxiliary_device.dev.type.release or auxiliary_device.dev.release must
+ * be populated with a non-NULL pointer to successfully register the
+ * auxiliary_device.  This release call is where resources associated with the
+ * auxiliary device must be free'ed.  Because once the device is placed on the
+ * bus the parent driver can not tell what other code may have a reference to
+ * this data.
+ *
+ * The auxiliary_device.dev.parent should be set.  Typically to the registering
+ * drivers device.
+ *
+ * Second, call auxiliary_device_init(), which checks several aspects of the
+ * auxiliary_device struct and performs a device_initialize().  After this step
+ * completes, any error state must have a call to auxiliary_device_uninit() in
+ * its resolution path.
+ *
+ * The third and final step in registering an auxiliary_device is to perform a
+ * call to auxiliary_device_add(), which sets the name of the device and adds
+ * the device to the bus.
+ *
+ * .. code-block:: c
+ *
+ *      #define MY_DEVICE_NAME "foo_dev"
+ *
+ *      ...
+ *
+ *	struct auxiliary_device *my_aux_dev = my_aux_dev_alloc(xxx);
+ *
+ *	// Step 1:
+ *	my_aux_dev->name = MY_DEVICE_NAME;
+ *	my_aux_dev->id = my_unique_id_alloc(xxx);
+ *	my_aux_dev->dev.release = my_aux_dev_release;
+ *	my_aux_dev->dev.parent = my_dev;
+ *
+ *	// Step 2:
+ *	if (auxiliary_device_init(my_aux_dev))
+ *		goto fail;
+ *
+ *	// Step 3:
+ *	if (auxiliary_device_add(my_aux_dev)) {
+ *		auxiliary_device_uninit(my_aux_dev);
+ *		goto fail;
+ *	}
+ *
+ *	...
+ *
+ *
+ * Unregistering an auxiliary_device is a two-step process to mirror the
+ * register process.  First call auxiliary_device_delete(), then call
+ * auxiliary_device_uninit().
+ *
+ * .. code-block:: c
+ *
+ *         auxiliary_device_delete(my_dev->my_aux_dev);
+ *         auxiliary_device_uninit(my_dev->my_aux_dev);
+ */
 struct auxiliary_device {
 	struct device dev;
 	const char *name;
 	u32 id;
 };
 
+/**
+ * struct auxiliary_driver - Definition of an auxiliary bus driver
+ * @probe: Called when a matching device is added to the bus.
+ * @remove: Called when device is removed from the bus.
+ * @shutdown: Called at shut-down time to quiesce the device.
+ * @suspend: Called to put the device to sleep mode. Usually to a power state.
+ * @resume: Called to bring a device from sleep mode.
+ * @name: Driver name.
+ * @driver: Core driver structure.
+ * @id_table: Table of devices this driver should match on the bus.
+ *
+ * Auxiliary drivers follow the standard driver model convention, where
+ * discovery/enumeration is handled by the core, and drivers provide probe()
+ * and remove() methods. They support power management and shutdown
+ * notifications using the standard conventions.
+ *
+ * Auxiliary drivers register themselves with the bus by calling
+ * auxiliary_driver_register(). The id_table contains the match_names of
+ * auxiliary devices that a driver can bind with.
+ *
+ * .. code-block:: c
+ *
+ *         static const struct auxiliary_device_id my_auxiliary_id_table[] = {
+ *		   { .name = "foo_mod.foo_dev" },
+ *                 {},
+ *         };
+ *
+ *         MODULE_DEVICE_TABLE(auxiliary, my_auxiliary_id_table);
+ *
+ *         struct auxiliary_driver my_drv = {
+ *                 .name = "myauxiliarydrv",
+ *                 .id_table = my_auxiliary_id_table,
+ *                 .probe = my_drv_probe,
+ *                 .remove = my_drv_remove
+ *         };
+ */
 struct auxiliary_driver {
 	int (*probe)(struct auxiliary_device *auxdev, const struct auxiliary_device_id *id);
 	void (*remove)(struct auxiliary_device *auxdev);
@@ -28,6 +188,16 @@ struct auxiliary_driver {
 	const struct auxiliary_device_id *id_table;
 };
 
+static inline void *auxiliary_get_drvdata(struct auxiliary_device *auxdev)
+{
+	return dev_get_drvdata(&auxdev->dev);
+}
+
+static inline void auxiliary_set_drvdata(struct auxiliary_device *auxdev, void *data)
+{
+	dev_set_drvdata(&auxdev->dev, data);
+}
+
 static inline struct auxiliary_device *to_auxiliary_dev(struct device *dev)
 {
 	return container_of(dev, struct auxiliary_device, dev);
@@ -66,6 +236,10 @@ void auxiliary_driver_unregister(struct auxiliary_driver *auxdrv);
  * Helper macro for auxiliary drivers which do not do anything special in
  * module init/exit. This eliminates a lot of boilerplate. Each module may only
  * use this macro once, and calling it replaces module_init() and module_exit()
+ *
+ * .. code-block:: c
+ *
+ *	module_auxiliary_driver(my_drv);
  */
 #define module_auxiliary_driver(__auxiliary_driver) \
 	module_driver(__auxiliary_driver, auxiliary_driver_register, auxiliary_driver_unregister)
diff --git a/include/linux/avf/virtchnl.h b/include/linux/avf/virtchnl.h
index db0e099c2399..2ce27e8e4f19 100644
--- a/include/linux/avf/virtchnl.h
+++ b/include/linux/avf/virtchnl.h
@@ -141,6 +141,13 @@ enum virtchnl_ops {
 	VIRTCHNL_OP_DEL_RSS_CFG = 46,
 	VIRTCHNL_OP_ADD_FDIR_FILTER = 47,
 	VIRTCHNL_OP_DEL_FDIR_FILTER = 48,
+	VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS = 51,
+	VIRTCHNL_OP_ADD_VLAN_V2 = 52,
+	VIRTCHNL_OP_DEL_VLAN_V2 = 53,
+	VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2 = 54,
+	VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2 = 55,
+	VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2 = 56,
+	VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2 = 57,
 	VIRTCHNL_OP_MAX,
 };
 
@@ -238,27 +245,27 @@ VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
  * VIRTCHNL_VF_OFFLOAD_L2 flag is inclusive of base mode L2 offloads including
  * TX/RX Checksum offloading and TSO for non-tunnelled packets.
  */
-#define VIRTCHNL_VF_OFFLOAD_L2			0x00000001
-#define VIRTCHNL_VF_OFFLOAD_IWARP		0x00000002
-#define VIRTCHNL_VF_OFFLOAD_RSVD		0x00000004
-#define VIRTCHNL_VF_OFFLOAD_RSS_AQ		0x00000008
-#define VIRTCHNL_VF_OFFLOAD_RSS_REG		0x00000010
-#define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR		0x00000020
-#define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES		0x00000040
-#define VIRTCHNL_VF_OFFLOAD_VLAN		0x00010000
-#define VIRTCHNL_VF_OFFLOAD_RX_POLLING		0x00020000
-#define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2	0x00040000
-#define VIRTCHNL_VF_OFFLOAD_RSS_PF		0X00080000
-#define VIRTCHNL_VF_OFFLOAD_ENCAP		0X00100000
-#define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM		0X00200000
-#define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM	0X00400000
-#define VIRTCHNL_VF_OFFLOAD_ADQ			0X00800000
-#define VIRTCHNL_VF_OFFLOAD_USO			0X02000000
-#define VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF		0X08000000
-#define VIRTCHNL_VF_OFFLOAD_FDIR_PF		0X10000000
-
-/* Define below the capability flags that are not offloads */
-#define VIRTCHNL_VF_CAP_ADV_LINK_SPEED		0x00000080
+#define VIRTCHNL_VF_OFFLOAD_L2			BIT(0)
+#define VIRTCHNL_VF_OFFLOAD_IWARP		BIT(1)
+#define VIRTCHNL_VF_OFFLOAD_RSS_AQ		BIT(3)
+#define VIRTCHNL_VF_OFFLOAD_RSS_REG		BIT(4)
+#define VIRTCHNL_VF_OFFLOAD_WB_ON_ITR		BIT(5)
+#define VIRTCHNL_VF_OFFLOAD_REQ_QUEUES		BIT(6)
+/* used to negotiate communicating link speeds in Mbps */
+#define VIRTCHNL_VF_CAP_ADV_LINK_SPEED		BIT(7)
+#define VIRTCHNL_VF_OFFLOAD_VLAN_V2		BIT(15)
+#define VIRTCHNL_VF_OFFLOAD_VLAN		BIT(16)
+#define VIRTCHNL_VF_OFFLOAD_RX_POLLING		BIT(17)
+#define VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2	BIT(18)
+#define VIRTCHNL_VF_OFFLOAD_RSS_PF		BIT(19)
+#define VIRTCHNL_VF_OFFLOAD_ENCAP		BIT(20)
+#define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM		BIT(21)
+#define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM	BIT(22)
+#define VIRTCHNL_VF_OFFLOAD_ADQ			BIT(23)
+#define VIRTCHNL_VF_OFFLOAD_USO			BIT(25)
+#define VIRTCHNL_VF_OFFLOAD_ADV_RSS_PF		BIT(27)
+#define VIRTCHNL_VF_OFFLOAD_FDIR_PF		BIT(28)
+
 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
 			       VIRTCHNL_VF_OFFLOAD_VLAN | \
 			       VIRTCHNL_VF_OFFLOAD_RSS_PF)
@@ -476,6 +483,351 @@ struct virtchnl_vlan_filter_list {
 
 VIRTCHNL_CHECK_STRUCT_LEN(6, virtchnl_vlan_filter_list);
 
+/* This enum is used for all of the VIRTCHNL_VF_OFFLOAD_VLAN_V2_CAPS related
+ * structures and opcodes.
+ *
+ * VIRTCHNL_VLAN_UNSUPPORTED - This field is not supported and if a VF driver
+ * populates it the PF should return VIRTCHNL_STATUS_ERR_NOT_SUPPORTED.
+ *
+ * VIRTCHNL_VLAN_ETHERTYPE_8100 - This field supports 0x8100 ethertype.
+ * VIRTCHNL_VLAN_ETHERTYPE_88A8 - This field supports 0x88A8 ethertype.
+ * VIRTCHNL_VLAN_ETHERTYPE_9100 - This field supports 0x9100 ethertype.
+ *
+ * VIRTCHNL_VLAN_ETHERTYPE_AND - Used when multiple ethertypes can be supported
+ * by the PF concurrently. For example, if the PF can support
+ * VIRTCHNL_VLAN_ETHERTYPE_8100 AND VIRTCHNL_VLAN_ETHERTYPE_88A8 filters it
+ * would OR the following bits:
+ *
+ *	VIRTHCNL_VLAN_ETHERTYPE_8100 |
+ *	VIRTCHNL_VLAN_ETHERTYPE_88A8 |
+ *	VIRTCHNL_VLAN_ETHERTYPE_AND;
+ *
+ * The VF would interpret this as VLAN filtering can be supported on both 0x8100
+ * and 0x88A8 VLAN ethertypes.
+ *
+ * VIRTCHNL_ETHERTYPE_XOR - Used when only a single ethertype can be supported
+ * by the PF concurrently. For example if the PF can support
+ * VIRTCHNL_VLAN_ETHERTYPE_8100 XOR VIRTCHNL_VLAN_ETHERTYPE_88A8 stripping
+ * offload it would OR the following bits:
+ *
+ *	VIRTCHNL_VLAN_ETHERTYPE_8100 |
+ *	VIRTCHNL_VLAN_ETHERTYPE_88A8 |
+ *	VIRTCHNL_VLAN_ETHERTYPE_XOR;
+ *
+ * The VF would interpret this as VLAN stripping can be supported on either
+ * 0x8100 or 0x88a8 VLAN ethertypes. So when requesting VLAN stripping via
+ * VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2 the specified ethertype will override
+ * the previously set value.
+ *
+ * VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1 - Used to tell the VF to insert and/or
+ * strip the VLAN tag using the L2TAG1 field of the Tx/Rx descriptors.
+ *
+ * VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2 - Used to tell the VF to insert hardware
+ * offloaded VLAN tags using the L2TAG2 field of the Tx descriptor.
+ *
+ * VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2 - Used to tell the VF to strip hardware
+ * offloaded VLAN tags using the L2TAG2_2 field of the Rx descriptor.
+ *
+ * VIRTCHNL_VLAN_PRIO - This field supports VLAN priority bits. This is used for
+ * VLAN filtering if the underlying PF supports it.
+ *
+ * VIRTCHNL_VLAN_TOGGLE_ALLOWED - This field is used to say whether a
+ * certain VLAN capability can be toggled. For example if the underlying PF/CP
+ * allows the VF to toggle VLAN filtering, stripping, and/or insertion it should
+ * set this bit along with the supported ethertypes.
+ */
+enum virtchnl_vlan_support {
+	VIRTCHNL_VLAN_UNSUPPORTED =		0,
+	VIRTCHNL_VLAN_ETHERTYPE_8100 =		BIT(0),
+	VIRTCHNL_VLAN_ETHERTYPE_88A8 =		BIT(1),
+	VIRTCHNL_VLAN_ETHERTYPE_9100 =		BIT(2),
+	VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1 =	BIT(8),
+	VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2 =	BIT(9),
+	VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2 =	BIT(10),
+	VIRTCHNL_VLAN_PRIO =			BIT(24),
+	VIRTCHNL_VLAN_FILTER_MASK =		BIT(28),
+	VIRTCHNL_VLAN_ETHERTYPE_AND =		BIT(29),
+	VIRTCHNL_VLAN_ETHERTYPE_XOR =		BIT(30),
+	VIRTCHNL_VLAN_TOGGLE =			BIT(31),
+};
+
+/* This structure is used as part of the VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS
+ * for filtering, insertion, and stripping capabilities.
+ *
+ * If only outer capabilities are supported (for filtering, insertion, and/or
+ * stripping) then this refers to the outer most or single VLAN from the VF's
+ * perspective.
+ *
+ * If only inner capabilities are supported (for filtering, insertion, and/or
+ * stripping) then this refers to the outer most or single VLAN from the VF's
+ * perspective. Functionally this is the same as if only outer capabilities are
+ * supported. The VF driver is just forced to use the inner fields when
+ * adding/deleting filters and enabling/disabling offloads (if supported).
+ *
+ * If both outer and inner capabilities are supported (for filtering, insertion,
+ * and/or stripping) then outer refers to the outer most or single VLAN and
+ * inner refers to the second VLAN, if it exists, in the packet.
+ *
+ * There is no support for tunneled VLAN offloads, so outer or inner are never
+ * referring to a tunneled packet from the VF's perspective.
+ */
+struct virtchnl_vlan_supported_caps {
+	u32 outer;
+	u32 inner;
+};
+
+/* The PF populates these fields based on the supported VLAN filtering. If a
+ * field is VIRTCHNL_VLAN_UNSUPPORTED then it's not supported and the PF will
+ * reject any VIRTCHNL_OP_ADD_VLAN_V2 or VIRTCHNL_OP_DEL_VLAN_V2 messages using
+ * the unsupported fields.
+ *
+ * Also, a VF is only allowed to toggle its VLAN filtering setting if the
+ * VIRTCHNL_VLAN_TOGGLE bit is set.
+ *
+ * The ethertype(s) specified in the ethertype_init field are the ethertypes
+ * enabled for VLAN filtering. VLAN filtering in this case refers to the outer
+ * most VLAN from the VF's perspective. If both inner and outer filtering are
+ * allowed then ethertype_init only refers to the outer most VLAN as only
+ * VLAN ethertype supported for inner VLAN filtering is
+ * VIRTCHNL_VLAN_ETHERTYPE_8100. By default, inner VLAN filtering is disabled
+ * when both inner and outer filtering are allowed.
+ *
+ * The max_filters field tells the VF how many VLAN filters it's allowed to have
+ * at any one time. If it exceeds this amount and tries to add another filter,
+ * then the request will be rejected by the PF. To prevent failures, the VF
+ * should keep track of how many VLAN filters it has added and not attempt to
+ * add more than max_filters.
+ */
+struct virtchnl_vlan_filtering_caps {
+	struct virtchnl_vlan_supported_caps filtering_support;
+	u32 ethertype_init;
+	u16 max_filters;
+	u8 pad[2];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vlan_filtering_caps);
+
+/* This enum is used for the virtchnl_vlan_offload_caps structure to specify
+ * if the PF supports a different ethertype for stripping and insertion.
+ *
+ * VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION - The ethertype(s) specified
+ * for stripping affect the ethertype(s) specified for insertion and visa versa
+ * as well. If the VF tries to configure VLAN stripping via
+ * VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2 with VIRTCHNL_VLAN_ETHERTYPE_8100 then
+ * that will be the ethertype for both stripping and insertion.
+ *
+ * VIRTCHNL_ETHERTYPE_MATCH_NOT_REQUIRED - The ethertype(s) specified for
+ * stripping do not affect the ethertype(s) specified for insertion and visa
+ * versa.
+ */
+enum virtchnl_vlan_ethertype_match {
+	VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION = 0,
+	VIRTCHNL_ETHERTYPE_MATCH_NOT_REQUIRED = 1,
+};
+
+/* The PF populates these fields based on the supported VLAN offloads. If a
+ * field is VIRTCHNL_VLAN_UNSUPPORTED then it's not supported and the PF will
+ * reject any VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2 or
+ * VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2 messages using the unsupported fields.
+ *
+ * Also, a VF is only allowed to toggle its VLAN offload setting if the
+ * VIRTCHNL_VLAN_TOGGLE_ALLOWED bit is set.
+ *
+ * The VF driver needs to be aware of how the tags are stripped by hardware and
+ * inserted by the VF driver based on the level of offload support. The PF will
+ * populate these fields based on where the VLAN tags are expected to be
+ * offloaded via the VIRTHCNL_VLAN_TAG_LOCATION_* bits. The VF will need to
+ * interpret these fields. See the definition of the
+ * VIRTCHNL_VLAN_TAG_LOCATION_* bits above the virtchnl_vlan_support
+ * enumeration.
+ */
+struct virtchnl_vlan_offload_caps {
+	struct virtchnl_vlan_supported_caps stripping_support;
+	struct virtchnl_vlan_supported_caps insertion_support;
+	u32 ethertype_init;
+	u8 ethertype_match;
+	u8 pad[3];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_vlan_offload_caps);
+
+/* VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS
+ * VF sends this message to determine its VLAN capabilities.
+ *
+ * PF will mark which capabilities it supports based on hardware support and
+ * current configuration. For example, if a port VLAN is configured the PF will
+ * not allow outer VLAN filtering, stripping, or insertion to be configured so
+ * it will block these features from the VF.
+ *
+ * The VF will need to cross reference its capabilities with the PFs
+ * capabilities in the response message from the PF to determine the VLAN
+ * support.
+ */
+struct virtchnl_vlan_caps {
+	struct virtchnl_vlan_filtering_caps filtering;
+	struct virtchnl_vlan_offload_caps offloads;
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_vlan_caps);
+
+struct virtchnl_vlan {
+	u16 tci;	/* tci[15:13] = PCP and tci[11:0] = VID */
+	u16 tci_mask;	/* only valid if VIRTCHNL_VLAN_FILTER_MASK set in
+			 * filtering caps
+			 */
+	u16 tpid;	/* 0x8100, 0x88a8, etc. and only type(s) set in
+			 * filtering caps. Note that tpid here does not refer to
+			 * VIRTCHNL_VLAN_ETHERTYPE_*, but it refers to the
+			 * actual 2-byte VLAN TPID
+			 */
+	u8 pad[2];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_vlan);
+
+struct virtchnl_vlan_filter {
+	struct virtchnl_vlan inner;
+	struct virtchnl_vlan outer;
+	u8 pad[16];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(32, virtchnl_vlan_filter);
+
+/* VIRTCHNL_OP_ADD_VLAN_V2
+ * VIRTCHNL_OP_DEL_VLAN_V2
+ *
+ * VF sends these messages to add/del one or more VLAN tag filters for Rx
+ * traffic.
+ *
+ * The PF attempts to add the filters and returns status.
+ *
+ * The VF should only ever attempt to add/del virtchnl_vlan_filter(s) using the
+ * supported fields negotiated via VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS.
+ */
+struct virtchnl_vlan_filter_list_v2 {
+	u16 vport_id;
+	u16 num_elements;
+	u8 pad[4];
+	struct virtchnl_vlan_filter filters[1];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(40, virtchnl_vlan_filter_list_v2);
+
+/* VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2
+ * VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2
+ * VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2
+ * VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2
+ *
+ * VF sends this message to enable or disable VLAN stripping or insertion. It
+ * also needs to specify an ethertype. The VF knows which VLAN ethertypes are
+ * allowed and whether or not it's allowed to enable/disable the specific
+ * offload via the VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS message. The VF needs to
+ * parse the virtchnl_vlan_caps.offloads fields to determine which offload
+ * messages are allowed.
+ *
+ * For example, if the PF populates the virtchnl_vlan_caps.offloads in the
+ * following manner the VF will be allowed to enable and/or disable 0x8100 inner
+ * VLAN insertion and/or stripping via the opcodes listed above. Inner in this
+ * case means the outer most or single VLAN from the VF's perspective. This is
+ * because no outer offloads are supported. See the comments above the
+ * virtchnl_vlan_supported_caps structure for more details.
+ *
+ * virtchnl_vlan_caps.offloads.stripping_support.inner =
+ *			VIRTCHNL_VLAN_TOGGLE |
+ *			VIRTCHNL_VLAN_ETHERTYPE_8100;
+ *
+ * virtchnl_vlan_caps.offloads.insertion_support.inner =
+ *			VIRTCHNL_VLAN_TOGGLE |
+ *			VIRTCHNL_VLAN_ETHERTYPE_8100;
+ *
+ * In order to enable inner (again note that in this case inner is the outer
+ * most or single VLAN from the VF's perspective) VLAN stripping for 0x8100
+ * VLANs, the VF would populate the virtchnl_vlan_setting structure in the
+ * following manner and send the VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2 message.
+ *
+ * virtchnl_vlan_setting.inner_ethertype_setting =
+ *			VIRTCHNL_VLAN_ETHERTYPE_8100;
+ *
+ * virtchnl_vlan_setting.vport_id = vport_id or vsi_id assigned to the VF on
+ * initialization.
+ *
+ * The reason that VLAN TPID(s) are not being used for the
+ * outer_ethertype_setting and inner_ethertype_setting fields is because it's
+ * possible a device could support VLAN insertion and/or stripping offload on
+ * multiple ethertypes concurrently, so this method allows a VF to request
+ * multiple ethertypes in one message using the virtchnl_vlan_support
+ * enumeration.
+ *
+ * For example, if the PF populates the virtchnl_vlan_caps.offloads in the
+ * following manner the VF will be allowed to enable 0x8100 and 0x88a8 outer
+ * VLAN insertion and stripping simultaneously. The
+ * virtchnl_vlan_caps.offloads.ethertype_match field will also have to be
+ * populated based on what the PF can support.
+ *
+ * virtchnl_vlan_caps.offloads.stripping_support.outer =
+ *			VIRTCHNL_VLAN_TOGGLE |
+ *			VIRTCHNL_VLAN_ETHERTYPE_8100 |
+ *			VIRTCHNL_VLAN_ETHERTYPE_88A8 |
+ *			VIRTCHNL_VLAN_ETHERTYPE_AND;
+ *
+ * virtchnl_vlan_caps.offloads.insertion_support.outer =
+ *			VIRTCHNL_VLAN_TOGGLE |
+ *			VIRTCHNL_VLAN_ETHERTYPE_8100 |
+ *			VIRTCHNL_VLAN_ETHERTYPE_88A8 |
+ *			VIRTCHNL_VLAN_ETHERTYPE_AND;
+ *
+ * In order to enable outer VLAN stripping for 0x8100 and 0x88a8 VLANs, the VF
+ * would populate the virthcnl_vlan_offload_structure in the following manner
+ * and send the VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2 message.
+ *
+ * virtchnl_vlan_setting.outer_ethertype_setting =
+ *			VIRTHCNL_VLAN_ETHERTYPE_8100 |
+ *			VIRTHCNL_VLAN_ETHERTYPE_88A8;
+ *
+ * virtchnl_vlan_setting.vport_id = vport_id or vsi_id assigned to the VF on
+ * initialization.
+ *
+ * There is also the case where a PF and the underlying hardware can support
+ * VLAN offloads on multiple ethertypes, but not concurrently. For example, if
+ * the PF populates the virtchnl_vlan_caps.offloads in the following manner the
+ * VF will be allowed to enable and/or disable 0x8100 XOR 0x88a8 outer VLAN
+ * offloads. The ethertypes must match for stripping and insertion.
+ *
+ * virtchnl_vlan_caps.offloads.stripping_support.outer =
+ *			VIRTCHNL_VLAN_TOGGLE |
+ *			VIRTCHNL_VLAN_ETHERTYPE_8100 |
+ *			VIRTCHNL_VLAN_ETHERTYPE_88A8 |
+ *			VIRTCHNL_VLAN_ETHERTYPE_XOR;
+ *
+ * virtchnl_vlan_caps.offloads.insertion_support.outer =
+ *			VIRTCHNL_VLAN_TOGGLE |
+ *			VIRTCHNL_VLAN_ETHERTYPE_8100 |
+ *			VIRTCHNL_VLAN_ETHERTYPE_88A8 |
+ *			VIRTCHNL_VLAN_ETHERTYPE_XOR;
+ *
+ * virtchnl_vlan_caps.offloads.ethertype_match =
+ *			VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION;
+ *
+ * In order to enable outer VLAN stripping for 0x88a8 VLANs, the VF would
+ * populate the virtchnl_vlan_setting structure in the following manner and send
+ * the VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2. Also, this will change the
+ * ethertype for VLAN insertion if it's enabled. So, for completeness, a
+ * VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2 with the same ethertype should be sent.
+ *
+ * virtchnl_vlan_setting.outer_ethertype_setting = VIRTHCNL_VLAN_ETHERTYPE_88A8;
+ *
+ * virtchnl_vlan_setting.vport_id = vport_id or vsi_id assigned to the VF on
+ * initialization.
+ */
+struct virtchnl_vlan_setting {
+	u32 outer_ethertype_setting;
+	u32 inner_ethertype_setting;
+	u16 vport_id;
+	u8 pad[6];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vlan_setting);
+
 /* VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE
  * VF sends VSI id and flags.
  * PF returns status code in retval.
@@ -1157,6 +1509,30 @@ virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
 	case VIRTCHNL_OP_DEL_FDIR_FILTER:
 		valid_len = sizeof(struct virtchnl_fdir_del);
 		break;
+	case VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS:
+		break;
+	case VIRTCHNL_OP_ADD_VLAN_V2:
+	case VIRTCHNL_OP_DEL_VLAN_V2:
+		valid_len = sizeof(struct virtchnl_vlan_filter_list_v2);
+		if (msglen >= valid_len) {
+			struct virtchnl_vlan_filter_list_v2 *vfl =
+			    (struct virtchnl_vlan_filter_list_v2 *)msg;
+
+			valid_len += (vfl->num_elements - 1) *
+				sizeof(struct virtchnl_vlan_filter);
+
+			if (vfl->num_elements == 0) {
+				err_msg_format = true;
+				break;
+			}
+		}
+		break;
+	case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING_V2:
+	case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING_V2:
+	case VIRTCHNL_OP_ENABLE_VLAN_INSERTION_V2:
+	case VIRTCHNL_OP_DISABLE_VLAN_INSERTION_V2:
+		valid_len = sizeof(struct virtchnl_vlan_setting);
+		break;
 	/* These are always errors coming from the VF. */
 	case VIRTCHNL_OP_EVENT:
 	case VIRTCHNL_OP_UNKNOWN:
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 33207004cfde..e863c88df95f 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -103,6 +103,9 @@ struct wb_completion {
  * change as blkcg is disabled and enabled higher up in the hierarchy, a wb
  * is tested for blkcg after lookup and removed from index on mismatch so
  * that a new wb for the combination can be created.
+ *
+ * Each bdi_writeback that is not embedded into the backing_dev_info must hold
+ * a reference to the parent backing_dev_info.  See cgwb_create() for details.
  */
 struct bdi_writeback {
 	struct backing_dev_info *bdi;	/* our parent bdi */
@@ -204,14 +207,6 @@ struct backing_dev_info {
 #endif
 };
 
-enum {
-	BLK_RW_ASYNC	= 0,
-	BLK_RW_SYNC	= 1,
-};
-
-void clear_bdi_congested(struct backing_dev_info *bdi, int sync);
-void set_bdi_congested(struct backing_dev_info *bdi, int sync);
-
 struct wb_lock_cookie {
 	bool locked;
 	unsigned long flags;
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index ac7f231b8825..87ce24d238f3 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -12,13 +12,13 @@
 #include <linux/kernel.h>
 #include <linux/fs.h>
 #include <linux/sched.h>
-#include <linux/blkdev.h>
 #include <linux/device.h>
 #include <linux/writeback.h>
-#include <linux/blk-cgroup.h>
 #include <linux/backing-dev-defs.h>
 #include <linux/slab.h>
 
+struct blkcg;
+
 static inline struct backing_dev_info *bdi_get(struct backing_dev_info *bdi)
 {
 	kref_get(&bdi->refcnt);
@@ -64,7 +64,7 @@ static inline bool bdi_has_dirty_io(struct backing_dev_info *bdi)
 	return atomic_long_read(&bdi->tot_write_bandwidth);
 }
 
-static inline void __add_wb_stat(struct bdi_writeback *wb,
+static inline void wb_stat_mod(struct bdi_writeback *wb,
 				 enum wb_stat_item item, s64 amount)
 {
 	percpu_counter_add_batch(&wb->stat[item], amount, WB_STAT_BATCH);
@@ -72,12 +72,12 @@ static inline void __add_wb_stat(struct bdi_writeback *wb,
 
 static inline void inc_wb_stat(struct bdi_writeback *wb, enum wb_stat_item item)
 {
-	__add_wb_stat(wb, item, 1);
+	wb_stat_mod(wb, item, 1);
 }
 
 static inline void dec_wb_stat(struct bdi_writeback *wb, enum wb_stat_item item)
 {
-	__add_wb_stat(wb, item, -1);
+	wb_stat_mod(wb, item, -1);
 }
 
 static inline s64 wb_stat(struct bdi_writeback *wb, enum wb_stat_item item)
@@ -133,28 +133,7 @@ static inline bool writeback_in_progress(struct bdi_writeback *wb)
 	return test_bit(WB_writeback_running, &wb->state);
 }
 
-static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
-{
-	struct super_block *sb;
-
-	if (!inode)
-		return &noop_backing_dev_info;
-
-	sb = inode->i_sb;
-#ifdef CONFIG_BLOCK
-	if (sb_is_blkdev_sb(sb))
-		return I_BDEV(inode)->bd_disk->bdi;
-#endif
-	return sb->s_bdi;
-}
-
-static inline int wb_congested(struct bdi_writeback *wb, int cong_bits)
-{
-	return wb->congested & cong_bits;
-}
-
-long congestion_wait(int sync, long timeout);
-long wait_iff_congested(int sync, long timeout);
+struct backing_dev_info *inode_to_bdi(struct inode *inode);
 
 static inline bool mapping_can_writeback(struct address_space *mapping)
 {
@@ -176,7 +155,6 @@ struct bdi_writeback *wb_get_create(struct backing_dev_info *bdi,
 				    gfp_t gfp);
 void wb_memcg_offline(struct mem_cgroup *memcg);
 void wb_blkcg_offline(struct blkcg *blkcg);
-int inode_congested(struct inode *inode, int cong_bits);
 
 /**
  * inode_cgwb_enabled - test whether cgroup writeback is enabled on an inode
@@ -404,50 +382,8 @@ static inline void wb_blkcg_offline(struct blkcg *blkcg)
 {
 }
 
-static inline int inode_congested(struct inode *inode, int cong_bits)
-{
-	return wb_congested(&inode_to_bdi(inode)->wb, cong_bits);
-}
-
 #endif	/* CONFIG_CGROUP_WRITEBACK */
 
-static inline int inode_read_congested(struct inode *inode)
-{
-	return inode_congested(inode, 1 << WB_sync_congested);
-}
-
-static inline int inode_write_congested(struct inode *inode)
-{
-	return inode_congested(inode, 1 << WB_async_congested);
-}
-
-static inline int inode_rw_congested(struct inode *inode)
-{
-	return inode_congested(inode, (1 << WB_sync_congested) |
-				      (1 << WB_async_congested));
-}
-
-static inline int bdi_congested(struct backing_dev_info *bdi, int cong_bits)
-{
-	return wb_congested(&bdi->wb, cong_bits);
-}
-
-static inline int bdi_read_congested(struct backing_dev_info *bdi)
-{
-	return bdi_congested(bdi, 1 << WB_sync_congested);
-}
-
-static inline int bdi_write_congested(struct backing_dev_info *bdi)
-{
-	return bdi_congested(bdi, 1 << WB_async_congested);
-}
-
-static inline int bdi_rw_congested(struct backing_dev_info *bdi)
-{
-	return bdi_congested(bdi, (1 << WB_sync_congested) |
-				  (1 << WB_async_congested));
-}
-
 const char *bdi_dev_name(struct backing_dev_info *bdi);
 
 #endif	/* _LINUX_BACKING_DEV_H */
diff --git a/include/linux/balloon_compaction.h b/include/linux/balloon_compaction.h
index 338aa27e4773..edb7f6d41faa 100644
--- a/include/linux/balloon_compaction.h
+++ b/include/linux/balloon_compaction.h
@@ -80,12 +80,6 @@ static inline void balloon_devinfo_init(struct balloon_dev_info *balloon)
 
 #ifdef CONFIG_BALLOON_COMPACTION
 extern const struct address_space_operations balloon_aops;
-extern bool balloon_page_isolate(struct page *page,
-				isolate_mode_t mode);
-extern void balloon_page_putback(struct page *page);
-extern int balloon_page_migrate(struct address_space *mapping,
-				struct page *newpage,
-				struct page *page, enum migrate_mode mode);
 
 /*
  * balloon_page_insert - insert a page into the balloon's page list and make
@@ -155,22 +149,6 @@ static inline void balloon_page_delete(struct page *page)
 	list_del(&page->lru);
 }
 
-static inline bool balloon_page_isolate(struct page *page)
-{
-	return false;
-}
-
-static inline void balloon_page_putback(struct page *page)
-{
-	return;
-}
-
-static inline int balloon_page_migrate(struct page *newpage,
-				struct page *page, enum migrate_mode mode)
-{
-	return 0;
-}
-
 static inline gfp_t balloon_mapping_gfp_mask(void)
 {
 	return GFP_HIGHUSER;
diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h
index d35b9206096d..e3314f746bfa 100644
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -3,6 +3,7 @@
 #define LINUX_BCMA_DRIVER_CC_H_
 
 #include <linux/platform_device.h>
+#include <linux/platform_data/brcmnand.h>
 #include <linux/gpio.h>
 
 /** ChipCommon core registers. **/
@@ -599,6 +600,10 @@ struct bcma_sflash {
 
 #ifdef CONFIG_BCMA_NFLASH
 struct bcma_nflash {
+	/* Must be the fist member for the brcmnand driver to
+	 * de-reference that structure.
+	 */
+	struct brcmnand_platform_data brcmnand_info;
 	bool present;
 	bool boot;		/* This is the flash the SoC boots from */
 };
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 049cf9421d83..3dc20c4f394c 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -8,6 +8,7 @@
 #include <uapi/linux/binfmts.h>
 
 struct filename;
+struct coredump_params;
 
 #define CORENAME_MAX_SIZE 128
 
@@ -77,18 +78,6 @@ struct linux_binprm {
 #define BINPRM_FLAGS_PRESERVE_ARGV0_BIT 3
 #define BINPRM_FLAGS_PRESERVE_ARGV0 (1 << BINPRM_FLAGS_PRESERVE_ARGV0_BIT)
 
-/* Function parameter for binfmt->coredump */
-struct coredump_params {
-	const kernel_siginfo_t *siginfo;
-	struct pt_regs *regs;
-	struct file *file;
-	unsigned long limit;
-	unsigned long mm_flags;
-	loff_t written;
-	loff_t pos;
-	loff_t to_skip;
-};
-
 /*
  * This structure defines the functions that are used to load the binary formats that
  * linux accepts.
@@ -98,8 +87,10 @@ struct linux_binfmt {
 	struct module *module;
 	int (*load_binary)(struct linux_binprm *);
 	int (*load_shlib)(struct file *);
+#ifdef CONFIG_COREDUMP
 	int (*core_dump)(struct coredump_params *cprm);
 	unsigned long min_coredump;	/* minimal dump size */
+#endif
 } __randomize_layout;
 
 extern void __register_binfmt(struct linux_binfmt *fmt, int insert);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 00952e92eae1..00450fd86bb4 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -6,19 +6,10 @@
 #define __LINUX_BIO_H
 
 #include <linux/mempool.h>
-#include <linux/ioprio.h>
 /* struct bio, bio_vec and BIO_* flags are defined in blk_types.h */
 #include <linux/blk_types.h>
 #include <linux/uio.h>
 
-#define BIO_DEBUG
-
-#ifdef BIO_DEBUG
-#define BIO_BUG_ON	BUG_ON
-#else
-#define BIO_BUG_ON
-#endif
-
 #define BIO_MAX_VECS		256U
 
 static inline unsigned int bio_max_segs(unsigned int nr_segs)
@@ -74,26 +65,9 @@ static inline bool bio_no_advance_iter(const struct bio *bio)
 {
 	return bio_op(bio) == REQ_OP_DISCARD ||
 	       bio_op(bio) == REQ_OP_SECURE_ERASE ||
-	       bio_op(bio) == REQ_OP_WRITE_SAME ||
 	       bio_op(bio) == REQ_OP_WRITE_ZEROES;
 }
 
-static inline bool bio_mergeable(struct bio *bio)
-{
-	if (bio->bi_opf & REQ_NOMERGE_FLAGS)
-		return false;
-
-	return true;
-}
-
-static inline unsigned int bio_cur_bytes(struct bio *bio)
-{
-	if (bio_has_data(bio))
-		return bio_iovec(bio).bv_len;
-	else /* dataless requests such as discard */
-		return bio->bi_iter.bi_size;
-}
-
 static inline void *bio_data(struct bio *bio)
 {
 	if (bio_has_data(bio))
@@ -102,25 +76,6 @@ static inline void *bio_data(struct bio *bio)
 	return NULL;
 }
 
-/**
- * bio_full - check if the bio is full
- * @bio:	bio to check
- * @len:	length of one segment to be added
- *
- * Return true if @bio is full and one segment with @len bytes can't be
- * added to the bio, otherwise return false
- */
-static inline bool bio_full(struct bio *bio, unsigned len)
-{
-	if (bio->bi_vcnt >= bio->bi_max_vecs)
-		return true;
-
-	if (bio->bi_iter.bi_size > UINT_MAX - len)
-		return true;
-
-	return false;
-}
-
 static inline bool bio_next_segment(const struct bio *bio,
 				    struct bvec_iter_all *iter)
 {
@@ -163,6 +118,28 @@ static inline void bio_advance_iter_single(const struct bio *bio,
 		bvec_iter_advance_single(bio->bi_io_vec, iter, bytes);
 }
 
+void __bio_advance(struct bio *, unsigned bytes);
+
+/**
+ * bio_advance - increment/complete a bio by some number of bytes
+ * @bio:	bio to advance
+ * @nbytes:	number of bytes to complete
+ *
+ * This updates bi_sector, bi_size and bi_idx; if the number of bytes to
+ * complete doesn't align with a bvec boundary, then bv_len and bv_offset will
+ * be updated on the last bvec as well.
+ *
+ * @bio will then represent the remaining, uncompleted portion of the io.
+ */
+static inline void bio_advance(struct bio *bio, unsigned int nbytes)
+{
+	if (nbytes == bio->bi_iter.bi_size) {
+		bio->bi_iter.bi_size = 0;
+		return;
+	}
+	__bio_advance(bio, nbytes);
+}
+
 #define __bio_for_each_segment(bvl, bio, iter, start)			\
 	for (iter = (start);						\
 	     (iter).bi_size &&						\
@@ -188,7 +165,7 @@ static inline void bio_advance_iter_single(const struct bio *bio,
  */
 #define bio_for_each_bvec_all(bvl, bio, i)		\
 	for (i = 0, bvl = bio_first_bvec_all(bio);	\
-	     i < (bio)->bi_vcnt; i++, bvl++)		\
+	     i < (bio)->bi_vcnt; i++, bvl++)
 
 #define bio_iter_last(bvec, iter) ((iter).bi_size == (bvec).bv_len)
 
@@ -208,8 +185,6 @@ static inline unsigned bio_segments(struct bio *bio)
 	case REQ_OP_SECURE_ERASE:
 	case REQ_OP_WRITE_ZEROES:
 		return 0;
-	case REQ_OP_WRITE_SAME:
-		return 1;
 	default:
 		break;
 	}
@@ -265,37 +240,6 @@ static inline void bio_clear_flag(struct bio *bio, unsigned int bit)
 	bio->bi_flags &= ~(1U << bit);
 }
 
-static inline void bio_get_first_bvec(struct bio *bio, struct bio_vec *bv)
-{
-	*bv = mp_bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter);
-}
-
-static inline void bio_get_last_bvec(struct bio *bio, struct bio_vec *bv)
-{
-	struct bvec_iter iter = bio->bi_iter;
-	int idx;
-
-	bio_get_first_bvec(bio, bv);
-	if (bv->bv_len == bio->bi_iter.bi_size)
-		return;		/* this bio only has a single bvec */
-
-	bio_advance_iter(bio, &iter, iter.bi_size);
-
-	if (!iter.bi_bvec_done)
-		idx = iter.bi_idx - 1;
-	else	/* in the middle of bvec */
-		idx = iter.bi_idx;
-
-	*bv = bio->bi_io_vec[idx];
-
-	/*
-	 * iter.bi_bvec_done records actual length of the last bvec
-	 * if this bio ends in the middle of one io vector
-	 */
-	if (iter.bi_bvec_done)
-		bv->bv_len = iter.bi_bvec_done;
-}
-
 static inline struct bio_vec *bio_first_bvec_all(struct bio *bio)
 {
 	WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED));
@@ -313,6 +257,60 @@ static inline struct bio_vec *bio_last_bvec_all(struct bio *bio)
 	return &bio->bi_io_vec[bio->bi_vcnt - 1];
 }
 
+/**
+ * struct folio_iter - State for iterating all folios in a bio.
+ * @folio: The current folio we're iterating.  NULL after the last folio.
+ * @offset: The byte offset within the current folio.
+ * @length: The number of bytes in this iteration (will not cross folio
+ *	boundary).
+ */
+struct folio_iter {
+	struct folio *folio;
+	size_t offset;
+	size_t length;
+	/* private: for use by the iterator */
+	struct folio *_next;
+	size_t _seg_count;
+	int _i;
+};
+
+static inline void bio_first_folio(struct folio_iter *fi, struct bio *bio,
+				   int i)
+{
+	struct bio_vec *bvec = bio_first_bvec_all(bio) + i;
+
+	fi->folio = page_folio(bvec->bv_page);
+	fi->offset = bvec->bv_offset +
+			PAGE_SIZE * (bvec->bv_page - &fi->folio->page);
+	fi->_seg_count = bvec->bv_len;
+	fi->length = min(folio_size(fi->folio) - fi->offset, fi->_seg_count);
+	fi->_next = folio_next(fi->folio);
+	fi->_i = i;
+}
+
+static inline void bio_next_folio(struct folio_iter *fi, struct bio *bio)
+{
+	fi->_seg_count -= fi->length;
+	if (fi->_seg_count) {
+		fi->folio = fi->_next;
+		fi->offset = 0;
+		fi->length = min(folio_size(fi->folio), fi->_seg_count);
+		fi->_next = folio_next(fi->folio);
+	} else if (fi->_i + 1 < bio->bi_vcnt) {
+		bio_first_folio(fi, bio, fi->_i + 1);
+	} else {
+		fi->folio = NULL;
+	}
+}
+
+/**
+ * bio_for_each_folio_all - Iterate over each folio in a bio.
+ * @fi: struct folio_iter which is updated for each folio.
+ * @bio: struct bio to iterate over.
+ */
+#define bio_for_each_folio_all(fi, bio)				\
+	for (bio_first_folio(&fi, bio, 0); fi.folio; bio_next_folio(&fi, bio))
+
 enum bip_flags {
 	BIP_BLOCK_INTEGRITY	= 1 << 0, /* block layer owns integrity data */
 	BIP_MAPPED_INTEGRITY	= 1 << 1, /* ref tag has been remapped */
@@ -385,7 +383,7 @@ extern struct bio *bio_split(struct bio *bio, int sectors,
  * @gfp:	gfp mask
  * @bs:		bio set to allocate from
  *
- * Returns a bio representing the next @sectors of @bio - if the bio is smaller
+ * Return: a bio representing the next @sectors of @bio - if the bio is smaller
  * than @sectors, returns the original bio unchanged.
  */
 static inline struct bio *bio_next_split(struct bio *bio, int sectors,
@@ -407,24 +405,28 @@ extern void bioset_exit(struct bio_set *);
 extern int biovec_init_pool(mempool_t *pool, int pool_entries);
 extern int bioset_init_from_src(struct bio_set *bs, struct bio_set *src);
 
-struct bio *bio_alloc_bioset(gfp_t gfp, unsigned short nr_iovecs,
-		struct bio_set *bs);
-struct bio *bio_alloc_kiocb(struct kiocb *kiocb, unsigned short nr_vecs,
-		struct bio_set *bs);
+struct bio *bio_alloc_bioset(struct block_device *bdev, unsigned short nr_vecs,
+			     unsigned int opf, gfp_t gfp_mask,
+			     struct bio_set *bs);
+struct bio *bio_alloc_kiocb(struct kiocb *kiocb, struct block_device *bdev,
+		unsigned short nr_vecs, unsigned int opf, struct bio_set *bs);
 struct bio *bio_kmalloc(gfp_t gfp_mask, unsigned short nr_iovecs);
 extern void bio_put(struct bio *);
 
-extern void __bio_clone_fast(struct bio *, struct bio *);
-extern struct bio *bio_clone_fast(struct bio *, gfp_t, struct bio_set *);
+struct bio *bio_alloc_clone(struct block_device *bdev, struct bio *bio_src,
+		gfp_t gfp, struct bio_set *bs);
+int bio_init_clone(struct block_device *bdev, struct bio *bio,
+		struct bio *bio_src, gfp_t gfp);
 
 extern struct bio_set fs_bio_set;
 
-static inline struct bio *bio_alloc(gfp_t gfp_mask, unsigned short nr_iovecs)
+static inline struct bio *bio_alloc(struct block_device *bdev,
+		unsigned short nr_vecs, unsigned int opf, gfp_t gfp_mask)
 {
-	return bio_alloc_bioset(gfp_mask, nr_iovecs, &fs_bio_set);
+	return bio_alloc_bioset(bdev, nr_vecs, opf, gfp_mask, &fs_bio_set);
 }
 
-extern blk_qc_t submit_bio(struct bio *);
+void submit_bio(struct bio *bio);
 
 extern void bio_endio(struct bio *);
 
@@ -456,25 +458,23 @@ static inline int bio_iov_vecs_to_alloc(struct iov_iter *iter, int max_segs)
 struct request_queue;
 
 extern int submit_bio_wait(struct bio *bio);
-extern void bio_advance(struct bio *, unsigned);
-
-extern void bio_init(struct bio *bio, struct bio_vec *table,
-		     unsigned short max_vecs);
+void bio_init(struct bio *bio, struct block_device *bdev, struct bio_vec *table,
+	      unsigned short max_vecs, unsigned int opf);
 extern void bio_uninit(struct bio *);
-extern void bio_reset(struct bio *);
+void bio_reset(struct bio *bio, struct block_device *bdev, unsigned int opf);
 void bio_chain(struct bio *, struct bio *);
 
-extern int bio_add_page(struct bio *, struct page *, unsigned int,unsigned int);
+int bio_add_page(struct bio *, struct page *, unsigned len, unsigned off);
+bool bio_add_folio(struct bio *, struct folio *, size_t len, size_t off);
 extern int bio_add_pc_page(struct request_queue *, struct bio *, struct page *,
 			   unsigned int, unsigned int);
 int bio_add_zone_append_page(struct bio *bio, struct page *page,
 			     unsigned int len, unsigned int offset);
-bool __bio_try_merge_page(struct bio *bio, struct page *page,
-		unsigned int len, unsigned int off, bool *same_page);
 void __bio_add_page(struct bio *bio, struct page *page,
 		unsigned int len, unsigned int off);
 int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter);
-void bio_release_pages(struct bio *bio, bool mark_dirty);
+void bio_iov_bvec_set(struct bio *bio, struct iov_iter *iter);
+void __bio_release_pages(struct bio *bio, bool mark_dirty);
 extern void bio_set_pages_dirty(struct bio *bio);
 extern void bio_check_pages_dirty(struct bio *bio);
 
@@ -482,27 +482,14 @@ extern void bio_copy_data_iter(struct bio *dst, struct bvec_iter *dst_iter,
 			       struct bio *src, struct bvec_iter *src_iter);
 extern void bio_copy_data(struct bio *dst, struct bio *src);
 extern void bio_free_pages(struct bio *bio);
-void bio_truncate(struct bio *bio, unsigned new_size);
 void guard_bio_eod(struct bio *bio);
 void zero_fill_bio(struct bio *bio);
 
-extern const char *bio_devname(struct bio *bio, char *buffer);
-
-#define bio_set_dev(bio, bdev) 				\
-do {							\
-	bio_clear_flag(bio, BIO_REMAPPED);		\
-	if ((bio)->bi_bdev != (bdev))			\
-		bio_clear_flag(bio, BIO_THROTTLED);	\
-	(bio)->bi_bdev = (bdev);			\
-	bio_associate_blkg(bio);			\
-} while (0)
-
-#define bio_copy_dev(dst, src)			\
-do {						\
-	bio_clear_flag(dst, BIO_REMAPPED);		\
-	(dst)->bi_bdev = (src)->bi_bdev;	\
-	bio_clone_blkg_association(dst, src);	\
-} while (0)
+static inline void bio_release_pages(struct bio *bio, bool mark_dirty)
+{
+	if (!bio_flagged(bio, BIO_NO_PAGE_REF))
+		__bio_release_pages(bio, mark_dirty);
+}
 
 #define bio_dev(bio) \
 	disk_devt((bio)->bi_bdev->bd_disk)
@@ -521,6 +508,15 @@ static inline void bio_clone_blkg_association(struct bio *dst,
 					      struct bio *src) { }
 #endif	/* CONFIG_BLK_CGROUP */
 
+static inline void bio_set_dev(struct bio *bio, struct block_device *bdev)
+{
+	bio_clear_flag(bio, BIO_REMAPPED);
+	if (bio->bi_bdev != bdev)
+		bio_clear_flag(bio, BIO_THROTTLED);
+	bio->bi_bdev = bdev;
+	bio_associate_blkg(bio);
+}
+
 /*
  * BIO list management for use by remapping drivers (e.g. DM or MD) and loop.
  *
@@ -784,11 +780,12 @@ static inline int bio_integrity_add_page(struct bio *bio, struct page *page,
  */
 static inline void bio_set_polled(struct bio *bio, struct kiocb *kiocb)
 {
-	bio->bi_opf |= REQ_HIPRI;
+	bio->bi_opf |= REQ_POLLED;
 	if (!is_sync_kiocb(kiocb))
 		bio->bi_opf |= REQ_NOWAIT;
 }
 
-struct bio *blk_next_bio(struct bio *bio, unsigned int nr_pages, gfp_t gfp);
+struct bio *blk_next_bio(struct bio *bio, struct block_device *bdev,
+		unsigned int nr_pages, unsigned int opf, gfp_t gfp);
 
 #endif /* __LINUX_BIO_H */
diff --git a/include/linux/bitfield.h b/include/linux/bitfield.h
index 4e035aca6f7e..c9be1657f03d 100644
--- a/include/linux/bitfield.h
+++ b/include/linux/bitfield.h
@@ -19,6 +19,9 @@
  *
  * Example:
  *
+ *  #include <linux/bitfield.h>
+ *  #include <linux/bits.h>
+ *
  *  #define REG_FIELD_A  GENMASK(6, 0)
  *  #define REG_FIELD_B  BIT(7)
  *  #define REG_FIELD_C  GENMASK(15, 8)
@@ -41,6 +44,22 @@
 
 #define __bf_shf(x) (__builtin_ffsll(x) - 1)
 
+#define __scalar_type_to_unsigned_cases(type)				\
+		unsigned type:	(unsigned type)0,			\
+		signed type:	(unsigned type)0
+
+#define __unsigned_scalar_typeof(x) typeof(				\
+		_Generic((x),						\
+			char:	(unsigned char)0,			\
+			__scalar_type_to_unsigned_cases(char),		\
+			__scalar_type_to_unsigned_cases(short),		\
+			__scalar_type_to_unsigned_cases(int),		\
+			__scalar_type_to_unsigned_cases(long),		\
+			__scalar_type_to_unsigned_cases(long long),	\
+			default: (x)))
+
+#define __bf_cast_unsigned(type, x)	((__unsigned_scalar_typeof(type))(x))
+
 #define __BF_FIELD_CHECK(_mask, _reg, _val, _pfx)			\
 	({								\
 		BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask),		\
@@ -49,7 +68,8 @@
 		BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ?		\
 				 ~((_mask) >> __bf_shf(_mask)) & (_val) : 0, \
 				 _pfx "value too large for the field"); \
-		BUILD_BUG_ON_MSG((_mask) > (typeof(_reg))~0ull,		\
+		BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) >	\
+				 __bf_cast_unsigned(_reg, ~0ull),	\
 				 _pfx "type of reg too small for mask"); \
 		__BUILD_BUG_ON_NOT_POWER_OF_2((_mask) +			\
 					      (1ULL << __bf_shf(_mask))); \
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 37f36dad18bd..7dba0847510c 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -6,6 +6,7 @@
 
 #include <linux/align.h>
 #include <linux/bitops.h>
+#include <linux/find.h>
 #include <linux/limits.h>
 #include <linux/string.h>
 #include <linux/types.h>
@@ -54,12 +55,6 @@ struct device;
  *  bitmap_clear(dst, pos, nbits)               Clear specified bit area
  *  bitmap_find_next_zero_area(buf, len, pos, n, mask)  Find bit free area
  *  bitmap_find_next_zero_area_off(buf, len, pos, n, mask, mask_off)  as above
- *  bitmap_next_clear_region(map, &start, &end, nbits)  Find next clear region
- *  bitmap_next_set_region(map, &start, &end, nbits)  Find next set region
- *  bitmap_for_each_clear_region(map, rs, re, start, end)
- *  						Iterate over all clear regions
- *  bitmap_for_each_set_region(map, rs, re, start, end)
- *  						Iterate over all set regions
  *  bitmap_shift_right(dst, src, n, nbits)      *dst = *src >> n
  *  bitmap_shift_left(dst, src, n, nbits)       *dst = *src << n
  *  bitmap_cut(dst, src, first, n, nbits)       Cut n bits from first, copy rest
@@ -123,6 +118,8 @@ struct device;
  */
 unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags);
 unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags);
+unsigned long *bitmap_alloc_node(unsigned int nbits, gfp_t flags, int node);
+unsigned long *bitmap_zalloc_node(unsigned int nbits, gfp_t flags, int node);
 void bitmap_free(const unsigned long *bitmap);
 
 /* Managed variants of the above. */
@@ -464,14 +461,6 @@ static inline void bitmap_replace(unsigned long *dst,
 		__bitmap_replace(dst, old, new, mask, nbits);
 }
 
-static inline void bitmap_next_clear_region(unsigned long *bitmap,
-					    unsigned int *rs, unsigned int *re,
-					    unsigned int end)
-{
-	*rs = find_next_zero_bit(bitmap, end, *rs);
-	*re = find_next_bit(bitmap, end, *rs + 1);
-}
-
 static inline void bitmap_next_set_region(unsigned long *bitmap,
 					  unsigned int *rs, unsigned int *re,
 					  unsigned int end)
@@ -480,25 +469,6 @@ static inline void bitmap_next_set_region(unsigned long *bitmap,
 	*re = find_next_zero_bit(bitmap, end, *rs + 1);
 }
 
-/*
- * Bitmap region iterators.  Iterates over the bitmap between [@start, @end).
- * @rs and @re should be integer variables and will be set to start and end
- * index of the current clear or set region.
- */
-#define bitmap_for_each_clear_region(bitmap, rs, re, start, end)	     \
-	for ((rs) = (start),						     \
-	     bitmap_next_clear_region((bitmap), &(rs), &(re), (end));	     \
-	     (rs) < (re);						     \
-	     (rs) = (re) + 1,						     \
-	     bitmap_next_clear_region((bitmap), &(rs), &(re), (end)))
-
-#define bitmap_for_each_set_region(bitmap, rs, re, start, end)		     \
-	for ((rs) = (start),						     \
-	     bitmap_next_set_region((bitmap), &(rs), &(re), (end));	     \
-	     (rs) < (re);						     \
-	     (rs) = (re) + 1,						     \
-	     bitmap_next_set_region((bitmap), &(rs), &(re), (end)))
-
 /**
  * BITMAP_FROM_U64() - Represent u64 value in the format suitable for bitmap.
  * @n: u64 value
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 5e62e2383b7f..7aaed501f768 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -32,40 +32,6 @@ extern unsigned long __sw_hweight64(__u64 w);
  */
 #include <asm/bitops.h>
 
-#define for_each_set_bit(bit, addr, size) \
-	for ((bit) = find_first_bit((addr), (size));		\
-	     (bit) < (size);					\
-	     (bit) = find_next_bit((addr), (size), (bit) + 1))
-
-/* same as for_each_set_bit() but use bit as value to start with */
-#define for_each_set_bit_from(bit, addr, size) \
-	for ((bit) = find_next_bit((addr), (size), (bit));	\
-	     (bit) < (size);					\
-	     (bit) = find_next_bit((addr), (size), (bit) + 1))
-
-#define for_each_clear_bit(bit, addr, size) \
-	for ((bit) = find_first_zero_bit((addr), (size));	\
-	     (bit) < (size);					\
-	     (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
-
-/* same as for_each_clear_bit() but use bit as value to start with */
-#define for_each_clear_bit_from(bit, addr, size) \
-	for ((bit) = find_next_zero_bit((addr), (size), (bit));	\
-	     (bit) < (size);					\
-	     (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
-
-/**
- * for_each_set_clump8 - iterate over bitmap for each 8-bit clump with set bits
- * @start: bit offset to start search and to store the current iteration offset
- * @clump: location to store copy of current 8-bit clump
- * @bits: bitmap address to base the search on
- * @size: bitmap size in number of bits
- */
-#define for_each_set_clump8(start, clump, bits, size) \
-	for ((start) = find_first_clump8(&(clump), (bits), (size)); \
-	     (start) < (size); \
-	     (start) = find_next_clump8(&(clump), (bits), (size), (start) + 8))
-
 static inline int get_bitmask_order(unsigned int count)
 {
 	int order;
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index b4de2010fba5..652cd05b0924 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -25,14 +25,8 @@
 #include <linux/kthread.h>
 #include <linux/fs.h>
 
-/* percpu_counter batch for blkg_[rw]stats, per-cpu drift doesn't matter */
-#define BLKG_STAT_CPU_BATCH	(INT_MAX / 2)
-
-/* Max limits for throttle policy */
-#define THROTL_IOPS_MAX		UINT_MAX
 #define FC_APPID_LEN              129
 
-
 #ifdef CONFIG_BLK_CGROUP
 
 enum blkg_iostat_type {
@@ -44,6 +38,7 @@ enum blkg_iostat_type {
 };
 
 struct blkcg_gq;
+struct blkg_policy_data;
 
 struct blkcg {
 	struct cgroup_subsys_state	css;
@@ -76,36 +71,6 @@ struct blkg_iostat_set {
 	struct blkg_iostat		last;
 };
 
-/*
- * A blkcg_gq (blkg) is association between a block cgroup (blkcg) and a
- * request_queue (q).  This is used by blkcg policies which need to track
- * information per blkcg - q pair.
- *
- * There can be multiple active blkcg policies and each blkg:policy pair is
- * represented by a blkg_policy_data which is allocated and freed by each
- * policy's pd_alloc/free_fn() methods.  A policy can allocate private data
- * area by allocating larger data structure which embeds blkg_policy_data
- * at the beginning.
- */
-struct blkg_policy_data {
-	/* the blkg and policy id this per-policy data belongs to */
-	struct blkcg_gq			*blkg;
-	int				plid;
-};
-
-/*
- * Policies that need to keep per-blkcg data which is independent from any
- * request_queue associated to it should implement cpd_alloc/free_fn()
- * methods.  A policy can allocate private data area by allocating larger
- * data structure which embeds blkcg_policy_data at the beginning.
- * cpd_init() is invoked to let each policy handle per-blkcg data.
- */
-struct blkcg_policy_data {
-	/* the blkcg and policy id this per-policy data belongs to */
-	struct blkcg			*blkcg;
-	int				plid;
-};
-
 /* association between a blk cgroup and a request queue */
 struct blkcg_gq {
 	/* Pointer to the associated request_queue */
@@ -130,7 +95,10 @@ struct blkcg_gq {
 
 	spinlock_t			async_bio_lock;
 	struct bio_list			async_bios;
-	struct work_struct		async_bio_work;
+	union {
+		struct work_struct	async_bio_work;
+		struct work_struct	free_work;
+	};
 
 	atomic_t			use_delay;
 	atomic64_t			delay_nsec;
@@ -141,93 +109,11 @@ struct blkcg_gq {
 	struct rcu_head			rcu_head;
 };
 
-typedef struct blkcg_policy_data *(blkcg_pol_alloc_cpd_fn)(gfp_t gfp);
-typedef void (blkcg_pol_init_cpd_fn)(struct blkcg_policy_data *cpd);
-typedef void (blkcg_pol_free_cpd_fn)(struct blkcg_policy_data *cpd);
-typedef void (blkcg_pol_bind_cpd_fn)(struct blkcg_policy_data *cpd);
-typedef struct blkg_policy_data *(blkcg_pol_alloc_pd_fn)(gfp_t gfp,
-				struct request_queue *q, struct blkcg *blkcg);
-typedef void (blkcg_pol_init_pd_fn)(struct blkg_policy_data *pd);
-typedef void (blkcg_pol_online_pd_fn)(struct blkg_policy_data *pd);
-typedef void (blkcg_pol_offline_pd_fn)(struct blkg_policy_data *pd);
-typedef void (blkcg_pol_free_pd_fn)(struct blkg_policy_data *pd);
-typedef void (blkcg_pol_reset_pd_stats_fn)(struct blkg_policy_data *pd);
-typedef bool (blkcg_pol_stat_pd_fn)(struct blkg_policy_data *pd,
-				struct seq_file *s);
-
-struct blkcg_policy {
-	int				plid;
-	/* cgroup files for the policy */
-	struct cftype			*dfl_cftypes;
-	struct cftype			*legacy_cftypes;
-
-	/* operations */
-	blkcg_pol_alloc_cpd_fn		*cpd_alloc_fn;
-	blkcg_pol_init_cpd_fn		*cpd_init_fn;
-	blkcg_pol_free_cpd_fn		*cpd_free_fn;
-	blkcg_pol_bind_cpd_fn		*cpd_bind_fn;
-
-	blkcg_pol_alloc_pd_fn		*pd_alloc_fn;
-	blkcg_pol_init_pd_fn		*pd_init_fn;
-	blkcg_pol_online_pd_fn		*pd_online_fn;
-	blkcg_pol_offline_pd_fn		*pd_offline_fn;
-	blkcg_pol_free_pd_fn		*pd_free_fn;
-	blkcg_pol_reset_pd_stats_fn	*pd_reset_stats_fn;
-	blkcg_pol_stat_pd_fn		*pd_stat_fn;
-};
-
-extern struct blkcg blkcg_root;
 extern struct cgroup_subsys_state * const blkcg_root_css;
-extern bool blkcg_debug_stats;
-
-struct blkcg_gq *blkg_lookup_slowpath(struct blkcg *blkcg,
-				      struct request_queue *q, bool update_hint);
-int blkcg_init_queue(struct request_queue *q);
-void blkcg_exit_queue(struct request_queue *q);
-
-/* Blkio controller policy registration */
-int blkcg_policy_register(struct blkcg_policy *pol);
-void blkcg_policy_unregister(struct blkcg_policy *pol);
-int blkcg_activate_policy(struct request_queue *q,
-			  const struct blkcg_policy *pol);
-void blkcg_deactivate_policy(struct request_queue *q,
-			     const struct blkcg_policy *pol);
-
-const char *blkg_dev_name(struct blkcg_gq *blkg);
-void blkcg_print_blkgs(struct seq_file *sf, struct blkcg *blkcg,
-		       u64 (*prfill)(struct seq_file *,
-				     struct blkg_policy_data *, int),
-		       const struct blkcg_policy *pol, int data,
-		       bool show_total);
-u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, u64 v);
-
-struct blkg_conf_ctx {
-	struct block_device		*bdev;
-	struct blkcg_gq			*blkg;
-	char				*body;
-};
-
-struct block_device *blkcg_conf_open_bdev(char **inputp);
-int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
-		   char *input, struct blkg_conf_ctx *ctx);
-void blkg_conf_finish(struct blkg_conf_ctx *ctx);
 
-/**
- * blkcg_css - find the current css
- *
- * Find the css associated with either the kthread or the current task.
- * This may return a dying css, so it is up to the caller to use tryget logic
- * to confirm it is alive and well.
- */
-static inline struct cgroup_subsys_state *blkcg_css(void)
-{
-	struct cgroup_subsys_state *css;
-
-	css = kthread_blkcg();
-	if (css)
-		return css;
-	return task_css(current, io_cgrp_id);
-}
+void blkcg_destroy_blkgs(struct blkcg *blkcg);
+void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay);
+void blkcg_maybe_throttle_current(void);
 
 static inline struct blkcg *css_to_blkcg(struct cgroup_subsys_state *css)
 {
@@ -235,27 +121,6 @@ static inline struct blkcg *css_to_blkcg(struct cgroup_subsys_state *css)
 }
 
 /**
- * __bio_blkcg - internal, inconsistent version to get blkcg
- *
- * DO NOT USE.
- * This function is inconsistent and consequently is dangerous to use.  The
- * first part of the function returns a blkcg where a reference is owned by the
- * bio.  This means it does not need to be rcu protected as it cannot go away
- * with the bio owning a reference to it.  However, the latter potentially gets
- * it from task_css().  This can race against task migration and the cgroup
- * dying.  It is also semantically different as it must be called rcu protected
- * and is susceptible to failure when trying to get a reference to it.
- * Therefore, it is not ok to assume that *_get() will always succeed on the
- * blkcg returned here.
- */
-static inline struct blkcg *__bio_blkcg(struct bio *bio)
-{
-	if (bio && bio->bi_blkg)
-		return bio->bi_blkg->blkcg;
-	return css_to_blkcg(blkcg_css());
-}
-
-/**
  * bio_blkcg - grab the blkcg associated with a bio
  * @bio: target bio
  *
@@ -291,22 +156,6 @@ static inline bool blk_cgroup_congested(void)
 }
 
 /**
- * bio_issue_as_root_blkg - see if this bio needs to be issued as root blkg
- * @return: true if this bio needs to be submitted with the root blkg context.
- *
- * In order to avoid priority inversions we sometimes need to issue a bio as if
- * it were attached to the root blkg, and then backcharge to the actual owning
- * blkg.  The idea is we do bio_blkcg() to look up the actual context for the
- * bio and attach the appropriate blkg to the bio.  Then we call this helper and
- * if it is true run with the root blkg for that queue and then do any
- * backcharging to the originating cgroup once the io is complete.
- */
-static inline bool bio_issue_as_root_blkg(struct bio *bio)
-{
-	return (bio->bi_opf & (REQ_META | REQ_SWAP)) != 0;
-}
-
-/**
  * blkcg_parent - get the parent of a blkcg
  * @blkcg: blkcg of interest
  *
@@ -318,96 +167,6 @@ static inline struct blkcg *blkcg_parent(struct blkcg *blkcg)
 }
 
 /**
- * __blkg_lookup - internal version of blkg_lookup()
- * @blkcg: blkcg of interest
- * @q: request_queue of interest
- * @update_hint: whether to update lookup hint with the result or not
- *
- * This is internal version and shouldn't be used by policy
- * implementations.  Looks up blkgs for the @blkcg - @q pair regardless of
- * @q's bypass state.  If @update_hint is %true, the caller should be
- * holding @q->queue_lock and lookup hint is updated on success.
- */
-static inline struct blkcg_gq *__blkg_lookup(struct blkcg *blkcg,
-					     struct request_queue *q,
-					     bool update_hint)
-{
-	struct blkcg_gq *blkg;
-
-	if (blkcg == &blkcg_root)
-		return q->root_blkg;
-
-	blkg = rcu_dereference(blkcg->blkg_hint);
-	if (blkg && blkg->q == q)
-		return blkg;
-
-	return blkg_lookup_slowpath(blkcg, q, update_hint);
-}
-
-/**
- * blkg_lookup - lookup blkg for the specified blkcg - q pair
- * @blkcg: blkcg of interest
- * @q: request_queue of interest
- *
- * Lookup blkg for the @blkcg - @q pair.  This function should be called
- * under RCU read lock.
- */
-static inline struct blkcg_gq *blkg_lookup(struct blkcg *blkcg,
-					   struct request_queue *q)
-{
-	WARN_ON_ONCE(!rcu_read_lock_held());
-	return __blkg_lookup(blkcg, q, false);
-}
-
-/**
- * blk_queue_root_blkg - return blkg for the (blkcg_root, @q) pair
- * @q: request_queue of interest
- *
- * Lookup blkg for @q at the root level. See also blkg_lookup().
- */
-static inline struct blkcg_gq *blk_queue_root_blkg(struct request_queue *q)
-{
-	return q->root_blkg;
-}
-
-/**
- * blkg_to_pdata - get policy private data
- * @blkg: blkg of interest
- * @pol: policy of interest
- *
- * Return pointer to private data associated with the @blkg-@pol pair.
- */
-static inline struct blkg_policy_data *blkg_to_pd(struct blkcg_gq *blkg,
-						  struct blkcg_policy *pol)
-{
-	return blkg ? blkg->pd[pol->plid] : NULL;
-}
-
-static inline struct blkcg_policy_data *blkcg_to_cpd(struct blkcg *blkcg,
-						     struct blkcg_policy *pol)
-{
-	return blkcg ? blkcg->cpd[pol->plid] : NULL;
-}
-
-/**
- * pdata_to_blkg - get blkg associated with policy private data
- * @pd: policy private data of interest
- *
- * @pd is policy private data.  Determine the blkg it's associated with.
- */
-static inline struct blkcg_gq *pd_to_blkg(struct blkg_policy_data *pd)
-{
-	return pd ? pd->blkg : NULL;
-}
-
-static inline struct blkcg *cpd_to_blkcg(struct blkcg_policy_data *cpd)
-{
-	return cpd ? cpd->blkcg : NULL;
-}
-
-extern void blkcg_destroy_blkgs(struct blkcg *blkcg);
-
-/**
  * blkcg_pin_online - pin online state
  * @blkcg: blkcg of interest
  *
@@ -439,231 +198,24 @@ static inline void blkcg_unpin_online(struct blkcg *blkcg)
 	} while (blkcg);
 }
 
-/**
- * blkg_path - format cgroup path of blkg
- * @blkg: blkg of interest
- * @buf: target buffer
- * @buflen: target buffer length
- *
- * Format the path of the cgroup of @blkg into @buf.
- */
-static inline int blkg_path(struct blkcg_gq *blkg, char *buf, int buflen)
-{
-	return cgroup_path(blkg->blkcg->css.cgroup, buf, buflen);
-}
-
-/**
- * blkg_get - get a blkg reference
- * @blkg: blkg to get
- *
- * The caller should be holding an existing reference.
- */
-static inline void blkg_get(struct blkcg_gq *blkg)
-{
-	percpu_ref_get(&blkg->refcnt);
-}
-
-/**
- * blkg_tryget - try and get a blkg reference
- * @blkg: blkg to get
- *
- * This is for use when doing an RCU lookup of the blkg.  We may be in the midst
- * of freeing this blkg, so we can only use it if the refcnt is not zero.
- */
-static inline bool blkg_tryget(struct blkcg_gq *blkg)
-{
-	return blkg && percpu_ref_tryget(&blkg->refcnt);
-}
-
-/**
- * blkg_put - put a blkg reference
- * @blkg: blkg to put
- */
-static inline void blkg_put(struct blkcg_gq *blkg)
-{
-	percpu_ref_put(&blkg->refcnt);
-}
-
-/**
- * blkg_for_each_descendant_pre - pre-order walk of a blkg's descendants
- * @d_blkg: loop cursor pointing to the current descendant
- * @pos_css: used for iteration
- * @p_blkg: target blkg to walk descendants of
- *
- * Walk @c_blkg through the descendants of @p_blkg.  Must be used with RCU
- * read locked.  If called under either blkcg or queue lock, the iteration
- * is guaranteed to include all and only online blkgs.  The caller may
- * update @pos_css by calling css_rightmost_descendant() to skip subtree.
- * @p_blkg is included in the iteration and the first node to be visited.
- */
-#define blkg_for_each_descendant_pre(d_blkg, pos_css, p_blkg)		\
-	css_for_each_descendant_pre((pos_css), &(p_blkg)->blkcg->css)	\
-		if (((d_blkg) = __blkg_lookup(css_to_blkcg(pos_css),	\
-					      (p_blkg)->q, false)))
-
-/**
- * blkg_for_each_descendant_post - post-order walk of a blkg's descendants
- * @d_blkg: loop cursor pointing to the current descendant
- * @pos_css: used for iteration
- * @p_blkg: target blkg to walk descendants of
- *
- * Similar to blkg_for_each_descendant_pre() but performs post-order
- * traversal instead.  Synchronization rules are the same.  @p_blkg is
- * included in the iteration and the last node to be visited.
- */
-#define blkg_for_each_descendant_post(d_blkg, pos_css, p_blkg)		\
-	css_for_each_descendant_post((pos_css), &(p_blkg)->blkcg->css)	\
-		if (((d_blkg) = __blkg_lookup(css_to_blkcg(pos_css),	\
-					      (p_blkg)->q, false)))
-
-bool __blkcg_punt_bio_submit(struct bio *bio);
-
-static inline bool blkcg_punt_bio_submit(struct bio *bio)
-{
-	if (bio->bi_opf & REQ_CGROUP_PUNT)
-		return __blkcg_punt_bio_submit(bio);
-	else
-		return false;
-}
-
-static inline void blkcg_bio_issue_init(struct bio *bio)
-{
-	bio_issue_init(&bio->bi_issue, bio_sectors(bio));
-}
-
-static inline void blkcg_use_delay(struct blkcg_gq *blkg)
-{
-	if (WARN_ON_ONCE(atomic_read(&blkg->use_delay) < 0))
-		return;
-	if (atomic_add_return(1, &blkg->use_delay) == 1)
-		atomic_inc(&blkg->blkcg->css.cgroup->congestion_count);
-}
-
-static inline int blkcg_unuse_delay(struct blkcg_gq *blkg)
-{
-	int old = atomic_read(&blkg->use_delay);
-
-	if (WARN_ON_ONCE(old < 0))
-		return 0;
-	if (old == 0)
-		return 0;
-
-	/*
-	 * We do this song and dance because we can race with somebody else
-	 * adding or removing delay.  If we just did an atomic_dec we'd end up
-	 * negative and we'd already be in trouble.  We need to subtract 1 and
-	 * then check to see if we were the last delay so we can drop the
-	 * congestion count on the cgroup.
-	 */
-	while (old) {
-		int cur = atomic_cmpxchg(&blkg->use_delay, old, old - 1);
-		if (cur == old)
-			break;
-		old = cur;
-	}
-
-	if (old == 0)
-		return 0;
-	if (old == 1)
-		atomic_dec(&blkg->blkcg->css.cgroup->congestion_count);
-	return 1;
-}
-
-/**
- * blkcg_set_delay - Enable allocator delay mechanism with the specified delay amount
- * @blkg: target blkg
- * @delay: delay duration in nsecs
- *
- * When enabled with this function, the delay is not decayed and must be
- * explicitly cleared with blkcg_clear_delay(). Must not be mixed with
- * blkcg_[un]use_delay() and blkcg_add_delay() usages.
- */
-static inline void blkcg_set_delay(struct blkcg_gq *blkg, u64 delay)
-{
-	int old = atomic_read(&blkg->use_delay);
-
-	/* We only want 1 person setting the congestion count for this blkg. */
-	if (!old && atomic_cmpxchg(&blkg->use_delay, old, -1) == old)
-		atomic_inc(&blkg->blkcg->css.cgroup->congestion_count);
-
-	atomic64_set(&blkg->delay_nsec, delay);
-}
-
-/**
- * blkcg_clear_delay - Disable allocator delay mechanism
- * @blkg: target blkg
- *
- * Disable use_delay mechanism. See blkcg_set_delay().
- */
-static inline void blkcg_clear_delay(struct blkcg_gq *blkg)
-{
-	int old = atomic_read(&blkg->use_delay);
-
-	/* We only want 1 person clearing the congestion count for this blkg. */
-	if (old && atomic_cmpxchg(&blkg->use_delay, old, 0) == old)
-		atomic_dec(&blkg->blkcg->css.cgroup->congestion_count);
-}
-
-void blk_cgroup_bio_start(struct bio *bio);
-void blkcg_add_delay(struct blkcg_gq *blkg, u64 now, u64 delta);
-void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay);
-void blkcg_maybe_throttle_current(void);
 #else	/* CONFIG_BLK_CGROUP */
 
 struct blkcg {
 };
 
-struct blkg_policy_data {
-};
-
-struct blkcg_policy_data {
-};
-
 struct blkcg_gq {
 };
 
-struct blkcg_policy {
-};
-
 #define blkcg_root_css	((struct cgroup_subsys_state *)ERR_PTR(-EINVAL))
 
 static inline void blkcg_maybe_throttle_current(void) { }
 static inline bool blk_cgroup_congested(void) { return false; }
 
 #ifdef CONFIG_BLOCK
-
 static inline void blkcg_schedule_throttle(struct request_queue *q, bool use_memdelay) { }
-
-static inline struct blkcg_gq *blkg_lookup(struct blkcg *blkcg, void *key) { return NULL; }
-static inline struct blkcg_gq *blk_queue_root_blkg(struct request_queue *q)
-{ return NULL; }
-static inline int blkcg_init_queue(struct request_queue *q) { return 0; }
-static inline void blkcg_exit_queue(struct request_queue *q) { }
-static inline int blkcg_policy_register(struct blkcg_policy *pol) { return 0; }
-static inline void blkcg_policy_unregister(struct blkcg_policy *pol) { }
-static inline int blkcg_activate_policy(struct request_queue *q,
-					const struct blkcg_policy *pol) { return 0; }
-static inline void blkcg_deactivate_policy(struct request_queue *q,
-					   const struct blkcg_policy *pol) { }
-
-static inline struct blkcg *__bio_blkcg(struct bio *bio) { return NULL; }
 static inline struct blkcg *bio_blkcg(struct bio *bio) { return NULL; }
+#endif /* CONFIG_BLOCK */
 
-static inline struct blkg_policy_data *blkg_to_pd(struct blkcg_gq *blkg,
-						  struct blkcg_policy *pol) { return NULL; }
-static inline struct blkcg_gq *pd_to_blkg(struct blkg_policy_data *pd) { return NULL; }
-static inline char *blkg_path(struct blkcg_gq *blkg) { return NULL; }
-static inline void blkg_get(struct blkcg_gq *blkg) { }
-static inline void blkg_put(struct blkcg_gq *blkg) { }
-
-static inline bool blkcg_punt_bio_submit(struct bio *bio) { return false; }
-static inline void blkcg_bio_issue_init(struct bio *bio) { }
-static inline void blk_cgroup_bio_start(struct bio *bio) { }
-
-#define blk_queue_for_each_rl(rl, q)	\
-	for ((rl) = &(q)->root_rl; (rl); (rl) = NULL)
-
-#endif	/* CONFIG_BLOCK */
 #endif	/* CONFIG_BLK_CGROUP */
 
 #ifdef CONFIG_BLK_CGROUP_FC_APPID
diff --git a/include/linux/blk-crypto-profile.h b/include/linux/blk-crypto-profile.h
new file mode 100644
index 000000000000..bbab65bd5428
--- /dev/null
+++ b/include/linux/blk-crypto-profile.h
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2019 Google LLC
+ */
+
+#ifndef __LINUX_BLK_CRYPTO_PROFILE_H
+#define __LINUX_BLK_CRYPTO_PROFILE_H
+
+#include <linux/bio.h>
+#include <linux/blk-crypto.h>
+
+struct blk_crypto_profile;
+
+/**
+ * struct blk_crypto_ll_ops - functions to control inline encryption hardware
+ *
+ * Low-level operations for controlling inline encryption hardware.  This
+ * interface must be implemented by storage drivers that support inline
+ * encryption.  All functions may sleep, are serialized by profile->lock, and
+ * are never called while profile->dev (if set) is runtime-suspended.
+ */
+struct blk_crypto_ll_ops {
+
+	/**
+	 * @keyslot_program: Program a key into the inline encryption hardware.
+	 *
+	 * Program @key into the specified @slot in the inline encryption
+	 * hardware, overwriting any key that the keyslot may already contain.
+	 * The keyslot is guaranteed to not be in-use by any I/O.
+	 *
+	 * This is required if the device has keyslots.  Otherwise (i.e. if the
+	 * device is a layered device, or if the device is real hardware that
+	 * simply doesn't have the concept of keyslots) it is never called.
+	 *
+	 * Must return 0 on success, or -errno on failure.
+	 */
+	int (*keyslot_program)(struct blk_crypto_profile *profile,
+			       const struct blk_crypto_key *key,
+			       unsigned int slot);
+
+	/**
+	 * @keyslot_evict: Evict a key from the inline encryption hardware.
+	 *
+	 * If the device has keyslots, this function must evict the key from the
+	 * specified @slot.  The slot will contain @key, but there should be no
+	 * need for the @key argument to be used as @slot should be sufficient.
+	 * The keyslot is guaranteed to not be in-use by any I/O.
+	 *
+	 * If the device doesn't have keyslots itself, this function must evict
+	 * @key from any underlying devices.  @slot won't be valid in this case.
+	 *
+	 * If there are no keyslots and no underlying devices, this function
+	 * isn't required.
+	 *
+	 * Must return 0 on success, or -errno on failure.
+	 */
+	int (*keyslot_evict)(struct blk_crypto_profile *profile,
+			     const struct blk_crypto_key *key,
+			     unsigned int slot);
+};
+
+/**
+ * struct blk_crypto_profile - inline encryption profile for a device
+ *
+ * This struct contains a storage device's inline encryption capabilities (e.g.
+ * the supported crypto algorithms), driver-provided functions to control the
+ * inline encryption hardware (e.g. programming and evicting keys), and optional
+ * device-independent keyslot management data.
+ */
+struct blk_crypto_profile {
+
+	/* public: Drivers must initialize the following fields. */
+
+	/**
+	 * @ll_ops: Driver-provided functions to control the inline encryption
+	 * hardware, e.g. program and evict keys.
+	 */
+	struct blk_crypto_ll_ops ll_ops;
+
+	/**
+	 * @max_dun_bytes_supported: The maximum number of bytes supported for
+	 * specifying the data unit number (DUN).  Specifically, the range of
+	 * supported DUNs is 0 through (1 << (8 * max_dun_bytes_supported)) - 1.
+	 */
+	unsigned int max_dun_bytes_supported;
+
+	/**
+	 * @modes_supported: Array of bitmasks that specifies whether each
+	 * combination of crypto mode and data unit size is supported.
+	 * Specifically, the i'th bit of modes_supported[crypto_mode] is set if
+	 * crypto_mode can be used with a data unit size of (1 << i).  Note that
+	 * only data unit sizes that are powers of 2 can be supported.
+	 */
+	unsigned int modes_supported[BLK_ENCRYPTION_MODE_MAX];
+
+	/**
+	 * @dev: An optional device for runtime power management.  If the driver
+	 * provides this device, it will be runtime-resumed before any function
+	 * in @ll_ops is called and will remain resumed during the call.
+	 */
+	struct device *dev;
+
+	/* private: The following fields shouldn't be accessed by drivers. */
+
+	/* Number of keyslots, or 0 if not applicable */
+	unsigned int num_slots;
+
+	/*
+	 * Serializes all calls to functions in @ll_ops as well as all changes
+	 * to @slot_hashtable.  This can also be taken in read mode to look up
+	 * keyslots while ensuring that they can't be changed concurrently.
+	 */
+	struct rw_semaphore lock;
+
+	/* List of idle slots, with least recently used slot at front */
+	wait_queue_head_t idle_slots_wait_queue;
+	struct list_head idle_slots;
+	spinlock_t idle_slots_lock;
+
+	/*
+	 * Hash table which maps struct *blk_crypto_key to keyslots, so that we
+	 * can find a key's keyslot in O(1) time rather than O(num_slots).
+	 * Protected by 'lock'.
+	 */
+	struct hlist_head *slot_hashtable;
+	unsigned int log_slot_ht_size;
+
+	/* Per-keyslot data */
+	struct blk_crypto_keyslot *slots;
+};
+
+int blk_crypto_profile_init(struct blk_crypto_profile *profile,
+			    unsigned int num_slots);
+
+int devm_blk_crypto_profile_init(struct device *dev,
+				 struct blk_crypto_profile *profile,
+				 unsigned int num_slots);
+
+unsigned int blk_crypto_keyslot_index(struct blk_crypto_keyslot *slot);
+
+blk_status_t blk_crypto_get_keyslot(struct blk_crypto_profile *profile,
+				    const struct blk_crypto_key *key,
+				    struct blk_crypto_keyslot **slot_ptr);
+
+void blk_crypto_put_keyslot(struct blk_crypto_keyslot *slot);
+
+bool __blk_crypto_cfg_supported(struct blk_crypto_profile *profile,
+				const struct blk_crypto_config *cfg);
+
+int __blk_crypto_evict_key(struct blk_crypto_profile *profile,
+			   const struct blk_crypto_key *key);
+
+void blk_crypto_reprogram_all_keys(struct blk_crypto_profile *profile);
+
+void blk_crypto_profile_destroy(struct blk_crypto_profile *profile);
+
+void blk_crypto_intersect_capabilities(struct blk_crypto_profile *parent,
+				       const struct blk_crypto_profile *child);
+
+bool blk_crypto_has_capabilities(const struct blk_crypto_profile *target,
+				 const struct blk_crypto_profile *reference);
+
+void blk_crypto_update_capabilities(struct blk_crypto_profile *dst,
+				    const struct blk_crypto_profile *src);
+
+#endif /* __LINUX_BLK_CRYPTO_PROFILE_H */
diff --git a/include/linux/blk-integrity.h b/include/linux/blk-integrity.h
new file mode 100644
index 000000000000..378b2459efe2
--- /dev/null
+++ b/include/linux/blk-integrity.h
@@ -0,0 +1,184 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_BLK_INTEGRITY_H
+#define _LINUX_BLK_INTEGRITY_H
+
+#include <linux/blk-mq.h>
+
+struct request;
+
+enum blk_integrity_flags {
+	BLK_INTEGRITY_VERIFY		= 1 << 0,
+	BLK_INTEGRITY_GENERATE		= 1 << 1,
+	BLK_INTEGRITY_DEVICE_CAPABLE	= 1 << 2,
+	BLK_INTEGRITY_IP_CHECKSUM	= 1 << 3,
+};
+
+struct blk_integrity_iter {
+	void			*prot_buf;
+	void			*data_buf;
+	sector_t		seed;
+	unsigned int		data_size;
+	unsigned short		interval;
+	unsigned char		tuple_size;
+	const char		*disk_name;
+};
+
+typedef blk_status_t (integrity_processing_fn) (struct blk_integrity_iter *);
+typedef void (integrity_prepare_fn) (struct request *);
+typedef void (integrity_complete_fn) (struct request *, unsigned int);
+
+struct blk_integrity_profile {
+	integrity_processing_fn		*generate_fn;
+	integrity_processing_fn		*verify_fn;
+	integrity_prepare_fn		*prepare_fn;
+	integrity_complete_fn		*complete_fn;
+	const char			*name;
+};
+
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+void blk_integrity_register(struct gendisk *, struct blk_integrity *);
+void blk_integrity_unregister(struct gendisk *);
+int blk_integrity_compare(struct gendisk *, struct gendisk *);
+int blk_rq_map_integrity_sg(struct request_queue *, struct bio *,
+				   struct scatterlist *);
+int blk_rq_count_integrity_sg(struct request_queue *, struct bio *);
+
+static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
+{
+	struct blk_integrity *bi = &disk->queue->integrity;
+
+	if (!bi->profile)
+		return NULL;
+
+	return bi;
+}
+
+static inline struct blk_integrity *
+bdev_get_integrity(struct block_device *bdev)
+{
+	return blk_get_integrity(bdev->bd_disk);
+}
+
+static inline bool
+blk_integrity_queue_supports_integrity(struct request_queue *q)
+{
+	return q->integrity.profile;
+}
+
+static inline void blk_queue_max_integrity_segments(struct request_queue *q,
+						    unsigned int segs)
+{
+	q->limits.max_integrity_segments = segs;
+}
+
+static inline unsigned short
+queue_max_integrity_segments(const struct request_queue *q)
+{
+	return q->limits.max_integrity_segments;
+}
+
+/**
+ * bio_integrity_intervals - Return number of integrity intervals for a bio
+ * @bi:		blk_integrity profile for device
+ * @sectors:	Size of the bio in 512-byte sectors
+ *
+ * Description: The block layer calculates everything in 512 byte
+ * sectors but integrity metadata is done in terms of the data integrity
+ * interval size of the storage device.  Convert the block layer sectors
+ * to the appropriate number of integrity intervals.
+ */
+static inline unsigned int bio_integrity_intervals(struct blk_integrity *bi,
+						   unsigned int sectors)
+{
+	return sectors >> (bi->interval_exp - 9);
+}
+
+static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi,
+					       unsigned int sectors)
+{
+	return bio_integrity_intervals(bi, sectors) * bi->tuple_size;
+}
+
+static inline bool blk_integrity_rq(struct request *rq)
+{
+	return rq->cmd_flags & REQ_INTEGRITY;
+}
+
+/*
+ * Return the first bvec that contains integrity data.  Only drivers that are
+ * limited to a single integrity segment should use this helper.
+ */
+static inline struct bio_vec *rq_integrity_vec(struct request *rq)
+{
+	if (WARN_ON_ONCE(queue_max_integrity_segments(rq->q) > 1))
+		return NULL;
+	return rq->bio->bi_integrity->bip_vec;
+}
+#else /* CONFIG_BLK_DEV_INTEGRITY */
+static inline int blk_rq_count_integrity_sg(struct request_queue *q,
+					    struct bio *b)
+{
+	return 0;
+}
+static inline int blk_rq_map_integrity_sg(struct request_queue *q,
+					  struct bio *b,
+					  struct scatterlist *s)
+{
+	return 0;
+}
+static inline struct blk_integrity *bdev_get_integrity(struct block_device *b)
+{
+	return NULL;
+}
+static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
+{
+	return NULL;
+}
+static inline bool
+blk_integrity_queue_supports_integrity(struct request_queue *q)
+{
+	return false;
+}
+static inline int blk_integrity_compare(struct gendisk *a, struct gendisk *b)
+{
+	return 0;
+}
+static inline void blk_integrity_register(struct gendisk *d,
+					 struct blk_integrity *b)
+{
+}
+static inline void blk_integrity_unregister(struct gendisk *d)
+{
+}
+static inline void blk_queue_max_integrity_segments(struct request_queue *q,
+						    unsigned int segs)
+{
+}
+static inline unsigned short
+queue_max_integrity_segments(const struct request_queue *q)
+{
+	return 0;
+}
+
+static inline unsigned int bio_integrity_intervals(struct blk_integrity *bi,
+						   unsigned int sectors)
+{
+	return 0;
+}
+
+static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi,
+					       unsigned int sectors)
+{
+	return 0;
+}
+static inline int blk_integrity_rq(struct request *rq)
+{
+	return 0;
+}
+
+static inline struct bio_vec *rq_integrity_vec(struct request *rq)
+{
+	return NULL;
+}
+#endif /* CONFIG_BLK_DEV_INTEGRITY */
+#endif /* _LINUX_BLK_INTEGRITY_H */
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 13ba1861e688..9f07061418db 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -4,12 +4,275 @@
 
 #include <linux/blkdev.h>
 #include <linux/sbitmap.h>
-#include <linux/srcu.h>
 #include <linux/lockdep.h>
+#include <linux/scatterlist.h>
+#include <linux/prefetch.h>
 
 struct blk_mq_tags;
 struct blk_flush_queue;
 
+#define BLKDEV_MIN_RQ	4
+#define BLKDEV_DEFAULT_RQ	128
+
+typedef void (rq_end_io_fn)(struct request *, blk_status_t);
+
+/*
+ * request flags */
+typedef __u32 __bitwise req_flags_t;
+
+/* drive already may have started this one */
+#define RQF_STARTED		((__force req_flags_t)(1 << 1))
+/* may not be passed by ioscheduler */
+#define RQF_SOFTBARRIER		((__force req_flags_t)(1 << 3))
+/* request for flush sequence */
+#define RQF_FLUSH_SEQ		((__force req_flags_t)(1 << 4))
+/* merge of different types, fail separately */
+#define RQF_MIXED_MERGE		((__force req_flags_t)(1 << 5))
+/* track inflight for MQ */
+#define RQF_MQ_INFLIGHT		((__force req_flags_t)(1 << 6))
+/* don't call prep for this one */
+#define RQF_DONTPREP		((__force req_flags_t)(1 << 7))
+/* vaguely specified driver internal error.  Ignored by the block layer */
+#define RQF_FAILED		((__force req_flags_t)(1 << 10))
+/* don't warn about errors */
+#define RQF_QUIET		((__force req_flags_t)(1 << 11))
+/* elevator private data attached */
+#define RQF_ELVPRIV		((__force req_flags_t)(1 << 12))
+/* account into disk and partition IO statistics */
+#define RQF_IO_STAT		((__force req_flags_t)(1 << 13))
+/* runtime pm request */
+#define RQF_PM			((__force req_flags_t)(1 << 15))
+/* on IO scheduler merge hash */
+#define RQF_HASHED		((__force req_flags_t)(1 << 16))
+/* track IO completion time */
+#define RQF_STATS		((__force req_flags_t)(1 << 17))
+/* Look at ->special_vec for the actual data payload instead of the
+   bio chain. */
+#define RQF_SPECIAL_PAYLOAD	((__force req_flags_t)(1 << 18))
+/* The per-zone write lock is held for this request */
+#define RQF_ZONE_WRITE_LOCKED	((__force req_flags_t)(1 << 19))
+/* already slept for hybrid poll */
+#define RQF_MQ_POLL_SLEPT	((__force req_flags_t)(1 << 20))
+/* ->timeout has been called, don't expire again */
+#define RQF_TIMED_OUT		((__force req_flags_t)(1 << 21))
+/* queue has elevator attached */
+#define RQF_ELV			((__force req_flags_t)(1 << 22))
+
+/* flags that prevent us from merging requests: */
+#define RQF_NOMERGE_FLAGS \
+	(RQF_STARTED | RQF_SOFTBARRIER | RQF_FLUSH_SEQ | RQF_SPECIAL_PAYLOAD)
+
+enum mq_rq_state {
+	MQ_RQ_IDLE		= 0,
+	MQ_RQ_IN_FLIGHT		= 1,
+	MQ_RQ_COMPLETE		= 2,
+};
+
+/*
+ * Try to put the fields that are referenced together in the same cacheline.
+ *
+ * If you modify this structure, make sure to update blk_rq_init() and
+ * especially blk_mq_rq_ctx_init() to take care of the added fields.
+ */
+struct request {
+	struct request_queue *q;
+	struct blk_mq_ctx *mq_ctx;
+	struct blk_mq_hw_ctx *mq_hctx;
+
+	unsigned int cmd_flags;		/* op and common flags */
+	req_flags_t rq_flags;
+
+	int tag;
+	int internal_tag;
+
+	unsigned int timeout;
+
+	/* the following two fields are internal, NEVER access directly */
+	unsigned int __data_len;	/* total data len */
+	sector_t __sector;		/* sector cursor */
+
+	struct bio *bio;
+	struct bio *biotail;
+
+	union {
+		struct list_head queuelist;
+		struct request *rq_next;
+	};
+
+	struct block_device *part;
+#ifdef CONFIG_BLK_RQ_ALLOC_TIME
+	/* Time that the first bio started allocating this request. */
+	u64 alloc_time_ns;
+#endif
+	/* Time that this request was allocated for this IO. */
+	u64 start_time_ns;
+	/* Time that I/O was submitted to the device. */
+	u64 io_start_time_ns;
+
+#ifdef CONFIG_BLK_WBT
+	unsigned short wbt_flags;
+#endif
+	/*
+	 * rq sectors used for blk stats. It has the same value
+	 * with blk_rq_sectors(rq), except that it never be zeroed
+	 * by completion.
+	 */
+	unsigned short stats_sectors;
+
+	/*
+	 * Number of scatter-gather DMA addr+len pairs after
+	 * physical address coalescing is performed.
+	 */
+	unsigned short nr_phys_segments;
+
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+	unsigned short nr_integrity_segments;
+#endif
+
+#ifdef CONFIG_BLK_INLINE_ENCRYPTION
+	struct bio_crypt_ctx *crypt_ctx;
+	struct blk_crypto_keyslot *crypt_keyslot;
+#endif
+
+	unsigned short write_hint;
+	unsigned short ioprio;
+
+	enum mq_rq_state state;
+	atomic_t ref;
+
+	unsigned long deadline;
+
+	/*
+	 * The hash is used inside the scheduler, and killed once the
+	 * request reaches the dispatch list. The ipi_list is only used
+	 * to queue the request for softirq completion, which is long
+	 * after the request has been unhashed (and even removed from
+	 * the dispatch list).
+	 */
+	union {
+		struct hlist_node hash;	/* merge hash */
+		struct llist_node ipi_list;
+	};
+
+	/*
+	 * The rb_node is only used inside the io scheduler, requests
+	 * are pruned when moved to the dispatch queue. So let the
+	 * completion_data share space with the rb_node.
+	 */
+	union {
+		struct rb_node rb_node;	/* sort/lookup */
+		struct bio_vec special_vec;
+		void *completion_data;
+	};
+
+
+	/*
+	 * Three pointers are available for the IO schedulers, if they need
+	 * more they have to dynamically allocate it.  Flush requests are
+	 * never put on the IO scheduler. So let the flush fields share
+	 * space with the elevator data.
+	 */
+	union {
+		struct {
+			struct io_cq		*icq;
+			void			*priv[2];
+		} elv;
+
+		struct {
+			unsigned int		seq;
+			struct list_head	list;
+			rq_end_io_fn		*saved_end_io;
+		} flush;
+	};
+
+	union {
+		struct __call_single_data csd;
+		u64 fifo_time;
+	};
+
+	/*
+	 * completion callback.
+	 */
+	rq_end_io_fn *end_io;
+	void *end_io_data;
+};
+
+#define req_op(req) \
+	((req)->cmd_flags & REQ_OP_MASK)
+
+static inline bool blk_rq_is_passthrough(struct request *rq)
+{
+	return blk_op_is_passthrough(req_op(rq));
+}
+
+static inline unsigned short req_get_ioprio(struct request *req)
+{
+	return req->ioprio;
+}
+
+#define rq_data_dir(rq)		(op_is_write(req_op(rq)) ? WRITE : READ)
+
+#define rq_dma_dir(rq) \
+	(op_is_write(req_op(rq)) ? DMA_TO_DEVICE : DMA_FROM_DEVICE)
+
+#define rq_list_add(listptr, rq)	do {		\
+	(rq)->rq_next = *(listptr);			\
+	*(listptr) = rq;				\
+} while (0)
+
+#define rq_list_pop(listptr)				\
+({							\
+	struct request *__req = NULL;			\
+	if ((listptr) && *(listptr))	{		\
+		__req = *(listptr);			\
+		*(listptr) = __req->rq_next;		\
+	}						\
+	__req;						\
+})
+
+#define rq_list_peek(listptr)				\
+({							\
+	struct request *__req = NULL;			\
+	if ((listptr) && *(listptr))			\
+		__req = *(listptr);			\
+	__req;						\
+})
+
+#define rq_list_for_each(listptr, pos)			\
+	for (pos = rq_list_peek((listptr)); pos; pos = rq_list_next(pos))
+
+#define rq_list_for_each_safe(listptr, pos, nxt)			\
+	for (pos = rq_list_peek((listptr)), nxt = rq_list_next(pos);	\
+		pos; pos = nxt, nxt = pos ? rq_list_next(pos) : NULL)
+
+#define rq_list_next(rq)	(rq)->rq_next
+#define rq_list_empty(list)	((list) == (struct request *) NULL)
+
+/**
+ * rq_list_move() - move a struct request from one list to another
+ * @src: The source list @rq is currently in
+ * @dst: The destination list that @rq will be appended to
+ * @rq: The request to move
+ * @prev: The request preceding @rq in @src (NULL if @rq is the head)
+ */
+static inline void rq_list_move(struct request **src, struct request **dst,
+				struct request *rq, struct request *prev)
+{
+	if (prev)
+		prev->rq_next = rq->rq_next;
+	else
+		*src = rq->rq_next;
+	rq_list_add(dst, rq);
+}
+
+enum blk_eh_timer_return {
+	BLK_EH_DONE,		/* drivers has completed the command */
+	BLK_EH_RESET_TIMER,	/* reset timer and try again */
+};
+
+#define BLK_TAG_ALLOC_FIFO 0 /* allocate starting from 0 */
+#define BLK_TAG_ALLOC_RR 1 /* allocate starting from last allocated tag */
+
 /**
  * struct blk_mq_hw_ctx - State for a hardware queue facing the hardware
  * block device
@@ -126,9 +389,6 @@ struct blk_mq_hw_ctx {
 	unsigned long		queued;
 	/** @run: Number of dispatched requests. */
 	unsigned long		run;
-#define BLK_MQ_MAX_DISPATCH_ORDER	7
-	/** @dispatched: Number of dispatch requests by queue. */
-	unsigned long		dispatched[BLK_MQ_MAX_DISPATCH_ORDER];
 
 	/** @numa_node: NUMA node the storage adapter has been connected to. */
 	unsigned int		numa_node;
@@ -148,13 +408,6 @@ struct blk_mq_hw_ctx {
 	/** @kobj: Kernel object for sysfs. */
 	struct kobject		kobj;
 
-	/** @poll_considered: Count times blk_poll() was called. */
-	unsigned long		poll_considered;
-	/** @poll_invoked: Count how many requests blk_poll() polled. */
-	unsigned long		poll_invoked;
-	/** @poll_success: Count how many polled requests were completed. */
-	unsigned long		poll_success;
-
 #ifdef CONFIG_BLK_DEBUG_FS
 	/**
 	 * @debugfs_dir: debugfs directory for this hardware queue. Named
@@ -170,13 +423,6 @@ struct blk_mq_hw_ctx {
 	 * q->unused_hctx_list.
 	 */
 	struct list_head	hctx_list;
-
-	/**
-	 * @srcu: Sleepable RCU. Use as lock when type of the hardware queue is
-	 * blocking (BLK_MQ_F_BLOCKING). Must be the last member - see also
-	 * blk_mq_hw_ctx_size().
-	 */
-	struct srcu_struct	srcu[];
 };
 
 /**
@@ -232,13 +478,11 @@ enum hctx_type {
  * @flags:	   Zero or more BLK_MQ_F_* flags.
  * @driver_data:   Pointer to data owned by the block driver that created this
  *		   tag set.
- * @active_queues_shared_sbitmap:
- * 		   number of active request queues per tag set.
- * @__bitmap_tags: A shared tags sbitmap, used over all hctx's
- * @__breserved_tags:
- *		   A shared reserved tags sbitmap, used over all hctx's
  * @tags:	   Tag sets. One tag set per hardware queue. Has @nr_hw_queues
  *		   elements.
+ * @shared_tags:
+ *		   Shared set of tags. Has @nr_hw_queues elements. If set,
+ *		   shared by all @tags.
  * @tag_list_lock: Serializes tag_list accesses.
  * @tag_list:	   List of the request queues that use this tag set. See also
  *		   request_queue.tag_set_list.
@@ -255,12 +499,11 @@ struct blk_mq_tag_set {
 	unsigned int		timeout;
 	unsigned int		flags;
 	void			*driver_data;
-	atomic_t		active_queues_shared_sbitmap;
 
-	struct sbitmap_queue	__bitmap_tags;
-	struct sbitmap_queue	__breserved_tags;
 	struct blk_mq_tags	**tags;
 
+	struct blk_mq_tags	*shared_tags;
+
 	struct mutex		tag_list_lock;
 	struct list_head	tag_list;
 };
@@ -276,8 +519,6 @@ struct blk_mq_queue_data {
 	bool last;
 };
 
-typedef bool (busy_iter_fn)(struct blk_mq_hw_ctx *, struct request *, void *,
-		bool);
 typedef bool (busy_tag_iter_fn)(struct request *, void *, bool);
 
 /**
@@ -301,6 +542,14 @@ struct blk_mq_ops {
 	void (*commit_rqs)(struct blk_mq_hw_ctx *);
 
 	/**
+	 * @queue_rqs: Queue a list of new requests. Driver is guaranteed
+	 * that each request belongs to the same queue. If the driver doesn't
+	 * empty the @rqlist completely, then the rest will be queued
+	 * individually by the block layer upon return.
+	 */
+	void (*queue_rqs)(struct request **rqlist);
+
+	/**
 	 * @get_budget: Reserve budget before queue request, once .queue_rq is
 	 * run, it is driver's responsibility to release the
 	 * reserved budget. Also we have to handle failure case
@@ -330,7 +579,7 @@ struct blk_mq_ops {
 	/**
 	 * @poll: Called to poll for completion of a specific tag.
 	 */
-	int (*poll)(struct blk_mq_hw_ctx *);
+	int (*poll)(struct blk_mq_hw_ctx *, struct io_comp_batch *);
 
 	/**
 	 * @complete: Mark the request as complete.
@@ -364,11 +613,6 @@ struct blk_mq_ops {
 			     unsigned int);
 
 	/**
-	 * @initialize_rq_fn: Called from inside blk_get_request().
-	 */
-	void (*initialize_rq_fn)(struct request *rq);
-
-	/**
 	 * @cleanup_rq: Called before freeing one request which isn't completed
 	 * yet, and usually for freeing the driver private data.
 	 */
@@ -432,6 +676,8 @@ enum {
 	((policy & ((1 << BLK_MQ_F_ALLOC_POLICY_BITS) - 1)) \
 		<< BLK_MQ_F_ALLOC_POLICY_START_BIT)
 
+#define BLK_MQ_NO_HCTX_IDX	(-1U)
+
 struct gendisk *__blk_mq_alloc_disk(struct blk_mq_tag_set *set, void *queuedata,
 		struct lock_class_key *lkclass);
 #define blk_mq_alloc_disk(set, queuedata)				\
@@ -451,8 +697,6 @@ int blk_mq_alloc_sq_tag_set(struct blk_mq_tag_set *set,
 		unsigned int set_flags);
 void blk_mq_free_tag_set(struct blk_mq_tag_set *set);
 
-void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule);
-
 void blk_mq_free_request(struct request *rq);
 
 bool blk_mq_queue_inflight(struct request_queue *q);
@@ -471,7 +715,40 @@ struct request *blk_mq_alloc_request(struct request_queue *q, unsigned int op,
 struct request *blk_mq_alloc_request_hctx(struct request_queue *q,
 		unsigned int op, blk_mq_req_flags_t flags,
 		unsigned int hctx_idx);
-struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags, unsigned int tag);
+
+/*
+ * Tag address space map.
+ */
+struct blk_mq_tags {
+	unsigned int nr_tags;
+	unsigned int nr_reserved_tags;
+
+	atomic_t active_queues;
+
+	struct sbitmap_queue bitmap_tags;
+	struct sbitmap_queue breserved_tags;
+
+	struct request **rqs;
+	struct request **static_rqs;
+	struct list_head page_list;
+
+	/*
+	 * used to clear request reference in rqs[] before freeing one
+	 * request pool
+	 */
+	spinlock_t lock;
+};
+
+static inline struct request *blk_mq_tag_to_rq(struct blk_mq_tags *tags,
+					       unsigned int tag)
+{
+	if (tag < tags->nr_tags) {
+		prefetch(tags->rqs[tag]);
+		return tags->rqs[tag];
+	}
+
+	return NULL;
+}
 
 enum {
 	BLK_MQ_UNIQUE_TAG_BITS = 16,
@@ -521,9 +798,49 @@ static inline void blk_mq_set_request_complete(struct request *rq)
 	WRITE_ONCE(rq->state, MQ_RQ_COMPLETE);
 }
 
+/*
+ * Complete the request directly instead of deferring it to softirq or
+ * completing it another CPU. Useful in preemptible instead of an interrupt.
+ */
+static inline void blk_mq_complete_request_direct(struct request *rq,
+		   void (*complete)(struct request *rq))
+{
+	WRITE_ONCE(rq->state, MQ_RQ_COMPLETE);
+	complete(rq);
+}
+
 void blk_mq_start_request(struct request *rq);
 void blk_mq_end_request(struct request *rq, blk_status_t error);
 void __blk_mq_end_request(struct request *rq, blk_status_t error);
+void blk_mq_end_request_batch(struct io_comp_batch *ib);
+
+/*
+ * Only need start/end time stamping if we have iostat or
+ * blk stats enabled, or using an IO scheduler.
+ */
+static inline bool blk_mq_need_time_stamp(struct request *rq)
+{
+	return (rq->rq_flags & (RQF_IO_STAT | RQF_STATS | RQF_ELV));
+}
+
+/*
+ * Batched completions only work when there is no I/O error and no special
+ * ->end_io handler.
+ */
+static inline bool blk_mq_add_to_batch(struct request *req,
+				       struct io_comp_batch *iob, int ioerror,
+				       void (*complete)(struct io_comp_batch *))
+{
+	if (!iob || (req->rq_flags & RQF_ELV) || req->end_io || ioerror)
+		return false;
+	if (!iob->complete)
+		iob->complete = complete;
+	else if (iob->complete != complete)
+		return false;
+	iob->need_ts |= blk_mq_need_time_stamp(req);
+	rq_list_add(&iob->req_list, req);
+	return true;
+}
 
 void blk_mq_requeue_request(struct request *rq, bool kick_requeue_list);
 void blk_mq_kick_requeue_list(struct request_queue *q);
@@ -538,6 +855,7 @@ void blk_mq_start_hw_queues(struct request_queue *q);
 void blk_mq_start_stopped_hw_queue(struct blk_mq_hw_ctx *hctx, bool async);
 void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async);
 void blk_mq_quiesce_queue(struct request_queue *q);
+void blk_mq_wait_quiesce_done(struct request_queue *q);
 void blk_mq_unquiesce_queue(struct request_queue *q);
 void blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs);
 void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async);
@@ -598,23 +916,12 @@ static inline void *blk_mq_rq_to_pdu(struct request *rq)
 }
 
 #define queue_for_each_hw_ctx(q, hctx, i)				\
-	for ((i) = 0; (i) < (q)->nr_hw_queues &&			\
-	     ({ hctx = (q)->queue_hw_ctx[i]; 1; }); (i)++)
+	xa_for_each(&(q)->hctx_table, (i), (hctx))
 
 #define hctx_for_each_ctx(hctx, ctx, i)					\
 	for ((i) = 0; (i) < (hctx)->nr_ctx &&				\
 	     ({ ctx = (hctx)->ctxs[(i)]; 1; }); (i)++)
 
-static inline blk_qc_t request_to_qc_t(struct blk_mq_hw_ctx *hctx,
-		struct request *rq)
-{
-	if (rq->tag != -1)
-		return rq->tag | (hctx->queue_num << BLK_QC_T_SHIFT);
-
-	return rq->internal_tag | (hctx->queue_num << BLK_QC_T_SHIFT) |
-			BLK_QC_T_INTERNAL;
-}
-
 static inline void blk_mq_cleanup_rq(struct request *rq)
 {
 	if (rq->q->mq_ops->cleanup_rq)
@@ -628,13 +935,252 @@ static inline void blk_rq_bio_prep(struct request *rq, struct bio *bio,
 	rq->__data_len = bio->bi_iter.bi_size;
 	rq->bio = rq->biotail = bio;
 	rq->ioprio = bio_prio(bio);
-
-	if (bio->bi_bdev)
-		rq->rq_disk = bio->bi_bdev->bd_disk;
 }
 
-blk_qc_t blk_mq_submit_bio(struct bio *bio);
 void blk_mq_hctx_set_fq_lock_class(struct blk_mq_hw_ctx *hctx,
 		struct lock_class_key *key);
 
-#endif
+static inline bool rq_is_sync(struct request *rq)
+{
+	return op_is_sync(rq->cmd_flags);
+}
+
+void blk_rq_init(struct request_queue *q, struct request *rq);
+int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
+		struct bio_set *bs, gfp_t gfp_mask,
+		int (*bio_ctr)(struct bio *, struct bio *, void *), void *data);
+void blk_rq_unprep_clone(struct request *rq);
+blk_status_t blk_insert_cloned_request(struct request *rq);
+
+struct rq_map_data {
+	struct page **pages;
+	int page_order;
+	int nr_entries;
+	unsigned long offset;
+	int null_mapped;
+	int from_user;
+};
+
+int blk_rq_map_user(struct request_queue *, struct request *,
+		struct rq_map_data *, void __user *, unsigned long, gfp_t);
+int blk_rq_map_user_iov(struct request_queue *, struct request *,
+		struct rq_map_data *, const struct iov_iter *, gfp_t);
+int blk_rq_unmap_user(struct bio *);
+int blk_rq_map_kern(struct request_queue *, struct request *, void *,
+		unsigned int, gfp_t);
+int blk_rq_append_bio(struct request *rq, struct bio *bio);
+void blk_execute_rq_nowait(struct request *rq, bool at_head,
+		rq_end_io_fn *end_io);
+blk_status_t blk_execute_rq(struct request *rq, bool at_head);
+
+struct req_iterator {
+	struct bvec_iter iter;
+	struct bio *bio;
+};
+
+#define __rq_for_each_bio(_bio, rq)	\
+	if ((rq->bio))			\
+		for (_bio = (rq)->bio; _bio; _bio = _bio->bi_next)
+
+#define rq_for_each_segment(bvl, _rq, _iter)			\
+	__rq_for_each_bio(_iter.bio, _rq)			\
+		bio_for_each_segment(bvl, _iter.bio, _iter.iter)
+
+#define rq_for_each_bvec(bvl, _rq, _iter)			\
+	__rq_for_each_bio(_iter.bio, _rq)			\
+		bio_for_each_bvec(bvl, _iter.bio, _iter.iter)
+
+#define rq_iter_last(bvec, _iter)				\
+		(_iter.bio->bi_next == NULL &&			\
+		 bio_iter_last(bvec, _iter.iter))
+
+/*
+ * blk_rq_pos()			: the current sector
+ * blk_rq_bytes()		: bytes left in the entire request
+ * blk_rq_cur_bytes()		: bytes left in the current segment
+ * blk_rq_sectors()		: sectors left in the entire request
+ * blk_rq_cur_sectors()		: sectors left in the current segment
+ * blk_rq_stats_sectors()	: sectors of the entire request used for stats
+ */
+static inline sector_t blk_rq_pos(const struct request *rq)
+{
+	return rq->__sector;
+}
+
+static inline unsigned int blk_rq_bytes(const struct request *rq)
+{
+	return rq->__data_len;
+}
+
+static inline int blk_rq_cur_bytes(const struct request *rq)
+{
+	if (!rq->bio)
+		return 0;
+	if (!bio_has_data(rq->bio))	/* dataless requests such as discard */
+		return rq->bio->bi_iter.bi_size;
+	return bio_iovec(rq->bio).bv_len;
+}
+
+static inline unsigned int blk_rq_sectors(const struct request *rq)
+{
+	return blk_rq_bytes(rq) >> SECTOR_SHIFT;
+}
+
+static inline unsigned int blk_rq_cur_sectors(const struct request *rq)
+{
+	return blk_rq_cur_bytes(rq) >> SECTOR_SHIFT;
+}
+
+static inline unsigned int blk_rq_stats_sectors(const struct request *rq)
+{
+	return rq->stats_sectors;
+}
+
+/*
+ * Some commands like WRITE SAME have a payload or data transfer size which
+ * is different from the size of the request.  Any driver that supports such
+ * commands using the RQF_SPECIAL_PAYLOAD flag needs to use this helper to
+ * calculate the data transfer size.
+ */
+static inline unsigned int blk_rq_payload_bytes(struct request *rq)
+{
+	if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
+		return rq->special_vec.bv_len;
+	return blk_rq_bytes(rq);
+}
+
+/*
+ * Return the first full biovec in the request.  The caller needs to check that
+ * there are any bvecs before calling this helper.
+ */
+static inline struct bio_vec req_bvec(struct request *rq)
+{
+	if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
+		return rq->special_vec;
+	return mp_bvec_iter_bvec(rq->bio->bi_io_vec, rq->bio->bi_iter);
+}
+
+static inline unsigned int blk_rq_count_bios(struct request *rq)
+{
+	unsigned int nr_bios = 0;
+	struct bio *bio;
+
+	__rq_for_each_bio(bio, rq)
+		nr_bios++;
+
+	return nr_bios;
+}
+
+void blk_steal_bios(struct bio_list *list, struct request *rq);
+
+/*
+ * Request completion related functions.
+ *
+ * blk_update_request() completes given number of bytes and updates
+ * the request without completing it.
+ */
+bool blk_update_request(struct request *rq, blk_status_t error,
+			       unsigned int nr_bytes);
+void blk_abort_request(struct request *);
+
+/*
+ * Number of physical segments as sent to the device.
+ *
+ * Normally this is the number of discontiguous data segments sent by the
+ * submitter.  But for data-less command like discard we might have no
+ * actual data segments submitted, but the driver might have to add it's
+ * own special payload.  In that case we still return 1 here so that this
+ * special payload will be mapped.
+ */
+static inline unsigned short blk_rq_nr_phys_segments(struct request *rq)
+{
+	if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
+		return 1;
+	return rq->nr_phys_segments;
+}
+
+/*
+ * Number of discard segments (or ranges) the driver needs to fill in.
+ * Each discard bio merged into a request is counted as one segment.
+ */
+static inline unsigned short blk_rq_nr_discard_segments(struct request *rq)
+{
+	return max_t(unsigned short, rq->nr_phys_segments, 1);
+}
+
+int __blk_rq_map_sg(struct request_queue *q, struct request *rq,
+		struct scatterlist *sglist, struct scatterlist **last_sg);
+static inline int blk_rq_map_sg(struct request_queue *q, struct request *rq,
+		struct scatterlist *sglist)
+{
+	struct scatterlist *last_sg = NULL;
+
+	return __blk_rq_map_sg(q, rq, sglist, &last_sg);
+}
+void blk_dump_rq_flags(struct request *, char *);
+
+#ifdef CONFIG_BLK_DEV_ZONED
+static inline unsigned int blk_rq_zone_no(struct request *rq)
+{
+	return blk_queue_zone_no(rq->q, blk_rq_pos(rq));
+}
+
+static inline unsigned int blk_rq_zone_is_seq(struct request *rq)
+{
+	return blk_queue_zone_is_seq(rq->q, blk_rq_pos(rq));
+}
+
+bool blk_req_needs_zone_write_lock(struct request *rq);
+bool blk_req_zone_write_trylock(struct request *rq);
+void __blk_req_zone_write_lock(struct request *rq);
+void __blk_req_zone_write_unlock(struct request *rq);
+
+static inline void blk_req_zone_write_lock(struct request *rq)
+{
+	if (blk_req_needs_zone_write_lock(rq))
+		__blk_req_zone_write_lock(rq);
+}
+
+static inline void blk_req_zone_write_unlock(struct request *rq)
+{
+	if (rq->rq_flags & RQF_ZONE_WRITE_LOCKED)
+		__blk_req_zone_write_unlock(rq);
+}
+
+static inline bool blk_req_zone_is_write_locked(struct request *rq)
+{
+	return rq->q->seq_zones_wlock &&
+		test_bit(blk_rq_zone_no(rq), rq->q->seq_zones_wlock);
+}
+
+static inline bool blk_req_can_dispatch_to_zone(struct request *rq)
+{
+	if (!blk_req_needs_zone_write_lock(rq))
+		return true;
+	return !blk_req_zone_is_write_locked(rq);
+}
+#else /* CONFIG_BLK_DEV_ZONED */
+static inline bool blk_req_needs_zone_write_lock(struct request *rq)
+{
+	return false;
+}
+
+static inline void blk_req_zone_write_lock(struct request *rq)
+{
+}
+
+static inline void blk_req_zone_write_unlock(struct request *rq)
+{
+}
+static inline bool blk_req_zone_is_write_locked(struct request *rq)
+{
+	return false;
+}
+
+static inline bool blk_req_can_dispatch_to_zone(struct request *rq)
+{
+	return true;
+}
+#endif /* CONFIG_BLK_DEV_ZONED */
+
+#endif /* BLK_MQ_H */
diff --git a/include/linux/blk-pm.h b/include/linux/blk-pm.h
index b80c65aba249..2580e05a8ab6 100644
--- a/include/linux/blk-pm.h
+++ b/include/linux/blk-pm.h
@@ -14,7 +14,7 @@ extern void blk_pm_runtime_init(struct request_queue *q, struct device *dev);
 extern int blk_pre_runtime_suspend(struct request_queue *q);
 extern void blk_post_runtime_suspend(struct request_queue *q, int err);
 extern void blk_pre_runtime_resume(struct request_queue *q);
-extern void blk_post_runtime_resume(struct request_queue *q, int err);
+extern void blk_post_runtime_resume(struct request_queue *q);
 extern void blk_set_runtime_active(struct request_queue *q);
 #else
 static inline void blk_pm_runtime_init(struct request_queue *q,
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index be622b5a21ed..1973ef9bd40f 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -20,8 +20,26 @@ struct cgroup_subsys_state;
 typedef void (bio_end_io_t) (struct bio *);
 struct bio_crypt_ctx;
 
+/*
+ * The basic unit of block I/O is a sector. It is used in a number of contexts
+ * in Linux (blk, bio, genhd). The size of one sector is 512 = 2**9
+ * bytes. Variables of type sector_t represent an offset or size that is a
+ * multiple of 512 bytes. Hence these two constants.
+ */
+#ifndef SECTOR_SHIFT
+#define SECTOR_SHIFT 9
+#endif
+#ifndef SECTOR_SIZE
+#define SECTOR_SIZE (1 << SECTOR_SHIFT)
+#endif
+
+#define PAGE_SECTORS_SHIFT	(PAGE_SHIFT - SECTOR_SHIFT)
+#define PAGE_SECTORS		(1 << PAGE_SECTORS_SHIFT)
+#define SECTOR_MASK		(PAGE_SECTORS - 1)
+
 struct block_device {
 	sector_t		bd_start_sect;
+	sector_t		bd_nr_sectors;
 	struct disk_stats __percpu *bd_stats;
 	unsigned long		bd_stamp;
 	bool			bd_read_only;	/* read-only policy */
@@ -38,6 +56,7 @@ struct block_device {
 	u8			bd_partno;
 	spinlock_t		bd_size_lock; /* for bd_inode->i_size updates */
 	struct gendisk *	bd_disk;
+	struct request_queue *	bd_queue;
 
 	/* The counter of freeze processes */
 	int			bd_fsfreeze_count;
@@ -66,8 +85,10 @@ struct block_device {
  */
 #if defined(CONFIG_ALPHA) && !defined(__alpha_bwx__)
 typedef u32 __bitwise blk_status_t;
+typedef u32 blk_short_t;
 #else
 typedef u8 __bitwise blk_status_t;
+typedef u16 blk_short_t;
 #endif
 #define	BLK_STS_OK 0
 #define BLK_STS_NOTSUPP		((__force blk_status_t)1)
@@ -134,6 +155,13 @@ typedef u8 __bitwise blk_status_t;
  */
 #define BLK_STS_ZONE_ACTIVE_RESOURCE	((__force blk_status_t)16)
 
+/*
+ * BLK_STS_OFFLINE is returned from the driver when the target device is offline
+ * or is being taken offline. This could help differentiate the case where a
+ * device is intentionally being shut down from a real I/O error.
+ */
+#define BLK_STS_OFFLINE		((__force blk_status_t)17)
+
 /**
  * blk_path_error - returns true if error may be path related
  * @error: status the request was completed with
@@ -208,6 +236,9 @@ static inline void bio_issue_init(struct bio_issue *issue,
 			((u64)size << BIO_ISSUE_SIZE_SHIFT));
 }
 
+typedef unsigned int blk_qc_t;
+#define BLK_QC_T_NONE		-1U
+
 /*
  * main unit of I/O for the block layer and lower layers (ie drivers and
  * stacking drivers)
@@ -221,14 +252,13 @@ struct bio {
 						 */
 	unsigned short		bi_flags;	/* BIO_* below */
 	unsigned short		bi_ioprio;
-	unsigned short		bi_write_hint;
 	blk_status_t		bi_status;
 	atomic_t		__bi_remaining;
 
 	struct bvec_iter	bi_iter;
 
+	blk_qc_t		bi_cookie;
 	bio_end_io_t		*bi_end_io;
-
 	void			*bi_private;
 #ifdef CONFIG_BLK_CGROUP
 	/*
@@ -295,7 +325,8 @@ enum {
 	BIO_TRACE_COMPLETION,	/* bio_endio() should trace the final completion
 				 * of this bio. */
 	BIO_CGROUP_ACCT,	/* has been accounted to a cgroup */
-	BIO_TRACKED,		/* set if bio goes through the rq_qos path */
+	BIO_QOS_THROTTLED,	/* bio went through rq_qos throttle path */
+	BIO_QOS_MERGED,		/* but went through rq_qos merge path */
 	BIO_REMAPPED,
 	BIO_ZONE_WRITE_LOCKED,	/* Owns a zoned device zone write lock */
 	BIO_PERCPU_CACHE,	/* can participate in per-cpu alloc cache */
@@ -332,8 +363,6 @@ enum req_opf {
 	REQ_OP_DISCARD		= 3,
 	/* securely erase sectors */
 	REQ_OP_SECURE_ERASE	= 5,
-	/* write the same sector many times */
-	REQ_OP_WRITE_SAME	= 7,
 	/* write the zero filled sector many times */
 	REQ_OP_WRITE_ZEROES	= 9,
 	/* Open a zone */
@@ -384,7 +413,7 @@ enum req_flag_bits {
 	/* command specific flags for REQ_OP_WRITE_ZEROES: */
 	__REQ_NOUNMAP,		/* do not free blocks when zeroing */
 
-	__REQ_HIPRI,
+	__REQ_POLLED,		/* caller polls for completion using bio_poll */
 
 	/* for driver use */
 	__REQ_DRV,
@@ -409,7 +438,7 @@ enum req_flag_bits {
 #define REQ_CGROUP_PUNT		(1ULL << __REQ_CGROUP_PUNT)
 
 #define REQ_NOUNMAP		(1ULL << __REQ_NOUNMAP)
-#define REQ_HIPRI		(1ULL << __REQ_HIPRI)
+#define REQ_POLLED		(1ULL << __REQ_POLLED)
 
 #define REQ_DRV			(1ULL << __REQ_DRV)
 #define REQ_SWAP		(1ULL << __REQ_SWAP)
@@ -431,8 +460,6 @@ enum stat_group {
 
 #define bio_op(bio) \
 	((bio)->bi_opf & REQ_OP_MASK)
-#define req_op(req) \
-	((req)->cmd_flags & REQ_OP_MASK)
 
 /* obsolete, don't use in new code */
 static inline void bio_set_op_attrs(struct bio *bio, unsigned op,
@@ -497,31 +524,6 @@ static inline int op_stat_group(unsigned int op)
 	return op_is_write(op);
 }
 
-typedef unsigned int blk_qc_t;
-#define BLK_QC_T_NONE		-1U
-#define BLK_QC_T_SHIFT		16
-#define BLK_QC_T_INTERNAL	(1U << 31)
-
-static inline bool blk_qc_t_valid(blk_qc_t cookie)
-{
-	return cookie != BLK_QC_T_NONE;
-}
-
-static inline unsigned int blk_qc_t_to_queue_num(blk_qc_t cookie)
-{
-	return (cookie & ~BLK_QC_T_INTERNAL) >> BLK_QC_T_SHIFT;
-}
-
-static inline unsigned int blk_qc_t_to_tag(blk_qc_t cookie)
-{
-	return cookie & ((1u << BLK_QC_T_SHIFT) - 1);
-}
-
-static inline bool blk_qc_t_is_internal(blk_qc_t cookie)
-{
-	return (cookie & BLK_QC_T_INTERNAL) != 0;
-}
-
 struct blk_rq_stat {
 	u64 mean;
 	u64 min;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 12b9dbcc980e..60d016138997 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1,29 +1,30 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Portions Copyright (C) 1992 Drew Eckhardt
+ */
 #ifndef _LINUX_BLKDEV_H
 #define _LINUX_BLKDEV_H
 
-#include <linux/sched.h>
-#include <linux/sched/clock.h>
-#include <linux/major.h>
-#include <linux/genhd.h>
+#include <linux/types.h>
+#include <linux/blk_types.h>
+#include <linux/device.h>
 #include <linux/list.h>
 #include <linux/llist.h>
 #include <linux/minmax.h>
 #include <linux/timer.h>
 #include <linux/workqueue.h>
 #include <linux/wait.h>
-#include <linux/mempool.h>
-#include <linux/pfn.h>
 #include <linux/bio.h>
-#include <linux/stringify.h>
 #include <linux/gfp.h>
-#include <linux/smp.h>
+#include <linux/kdev_t.h>
 #include <linux/rcupdate.h>
 #include <linux/percpu-refcount.h>
-#include <linux/scatterlist.h>
 #include <linux/blkzoned.h>
-#include <linux/pm.h>
+#include <linux/sched.h>
 #include <linux/sbitmap.h>
+#include <linux/srcu.h>
+#include <linux/uuid.h>
+#include <linux/xarray.h>
 
 struct module;
 struct request_queue;
@@ -33,14 +34,16 @@ struct request;
 struct sg_io_hdr;
 struct blkcg_gq;
 struct blk_flush_queue;
+struct kiocb;
 struct pr_ops;
 struct rq_qos;
 struct blk_queue_stats;
 struct blk_stat_callback;
-struct blk_keyslot_manager;
+struct blk_crypto_profile;
 
-#define BLKDEV_MIN_RQ	4
-#define BLKDEV_MAX_RQ	128	/* Default maximum */
+extern const struct device_type disk_type;
+extern struct device_type part_type;
+extern struct class block_class;
 
 /* Must be consistent with blk_mq_poll_stats_bkt() */
 #define BLK_MQ_POLL_STATS_BKTS 16
@@ -54,222 +57,159 @@ struct blk_keyslot_manager;
  */
 #define BLKCG_MAX_POLS		6
 
-typedef void (rq_end_io_fn)(struct request *, blk_status_t);
+#define DISK_MAX_PARTS			256
+#define DISK_NAME_LEN			32
 
+#define PARTITION_META_INFO_VOLNAMELTH	64
 /*
- * request flags */
-typedef __u32 __bitwise req_flags_t;
-
-/* drive already may have started this one */
-#define RQF_STARTED		((__force req_flags_t)(1 << 1))
-/* may not be passed by ioscheduler */
-#define RQF_SOFTBARRIER		((__force req_flags_t)(1 << 3))
-/* request for flush sequence */
-#define RQF_FLUSH_SEQ		((__force req_flags_t)(1 << 4))
-/* merge of different types, fail separately */
-#define RQF_MIXED_MERGE		((__force req_flags_t)(1 << 5))
-/* track inflight for MQ */
-#define RQF_MQ_INFLIGHT		((__force req_flags_t)(1 << 6))
-/* don't call prep for this one */
-#define RQF_DONTPREP		((__force req_flags_t)(1 << 7))
-/* vaguely specified driver internal error.  Ignored by the block layer */
-#define RQF_FAILED		((__force req_flags_t)(1 << 10))
-/* don't warn about errors */
-#define RQF_QUIET		((__force req_flags_t)(1 << 11))
-/* elevator private data attached */
-#define RQF_ELVPRIV		((__force req_flags_t)(1 << 12))
-/* account into disk and partition IO statistics */
-#define RQF_IO_STAT		((__force req_flags_t)(1 << 13))
-/* runtime pm request */
-#define RQF_PM			((__force req_flags_t)(1 << 15))
-/* on IO scheduler merge hash */
-#define RQF_HASHED		((__force req_flags_t)(1 << 16))
-/* track IO completion time */
-#define RQF_STATS		((__force req_flags_t)(1 << 17))
-/* Look at ->special_vec for the actual data payload instead of the
-   bio chain. */
-#define RQF_SPECIAL_PAYLOAD	((__force req_flags_t)(1 << 18))
-/* The per-zone write lock is held for this request */
-#define RQF_ZONE_WRITE_LOCKED	((__force req_flags_t)(1 << 19))
-/* already slept for hybrid poll */
-#define RQF_MQ_POLL_SLEPT	((__force req_flags_t)(1 << 20))
-/* ->timeout has been called, don't expire again */
-#define RQF_TIMED_OUT		((__force req_flags_t)(1 << 21))
-
-/* flags that prevent us from merging requests: */
-#define RQF_NOMERGE_FLAGS \
-	(RQF_STARTED | RQF_SOFTBARRIER | RQF_FLUSH_SEQ | RQF_SPECIAL_PAYLOAD)
-
-/*
- * Request state for blk-mq.
+ * Enough for the string representation of any kind of UUID plus NULL.
+ * EFI UUID is 36 characters. MSDOS UUID is 11 characters.
  */
-enum mq_rq_state {
-	MQ_RQ_IDLE		= 0,
-	MQ_RQ_IN_FLIGHT		= 1,
-	MQ_RQ_COMPLETE		= 2,
+#define PARTITION_META_INFO_UUIDLTH	(UUID_STRING_LEN + 1)
+
+struct partition_meta_info {
+	char uuid[PARTITION_META_INFO_UUIDLTH];
+	u8 volname[PARTITION_META_INFO_VOLNAMELTH];
 };
 
-/*
- * Try to put the fields that are referenced together in the same cacheline.
+/**
+ * DOC: genhd capability flags
+ *
+ * ``GENHD_FL_REMOVABLE``: indicates that the block device gives access to
+ * removable media.  When set, the device remains present even when media is not
+ * inserted.  Shall not be set for devices which are removed entirely when the
+ * media is removed.
+ *
+ * ``GENHD_FL_HIDDEN``: the block device is hidden; it doesn't produce events,
+ * doesn't appear in sysfs, and can't be opened from userspace or using
+ * blkdev_get*. Used for the underlying components of multipath devices.
+ *
+ * ``GENHD_FL_NO_PART``: partition support is disabled.  The kernel will not
+ * scan for partitions from add_disk, and users can't add partitions manually.
  *
- * If you modify this structure, make sure to update blk_rq_init() and
- * especially blk_mq_rq_ctx_init() to take care of the added fields.
  */
-struct request {
-	struct request_queue *q;
-	struct blk_mq_ctx *mq_ctx;
-	struct blk_mq_hw_ctx *mq_hctx;
-
-	unsigned int cmd_flags;		/* op and common flags */
-	req_flags_t rq_flags;
-
-	int tag;
-	int internal_tag;
+enum {
+	GENHD_FL_REMOVABLE			= 1 << 0,
+	GENHD_FL_HIDDEN				= 1 << 1,
+	GENHD_FL_NO_PART			= 1 << 2,
+};
 
-	/* the following two fields are internal, NEVER access directly */
-	unsigned int __data_len;	/* total data len */
-	sector_t __sector;		/* sector cursor */
+enum {
+	DISK_EVENT_MEDIA_CHANGE			= 1 << 0, /* media changed */
+	DISK_EVENT_EJECT_REQUEST		= 1 << 1, /* eject requested */
+};
 
-	struct bio *bio;
-	struct bio *biotail;
+enum {
+	/* Poll even if events_poll_msecs is unset */
+	DISK_EVENT_FLAG_POLL			= 1 << 0,
+	/* Forward events to udev */
+	DISK_EVENT_FLAG_UEVENT			= 1 << 1,
+	/* Block event polling when open for exclusive write */
+	DISK_EVENT_FLAG_BLOCK_ON_EXCL_WRITE	= 1 << 2,
+};
 
-	struct list_head queuelist;
+struct disk_events;
+struct badblocks;
 
-	/*
-	 * The hash is used inside the scheduler, and killed once the
-	 * request reaches the dispatch list. The ipi_list is only used
-	 * to queue the request for softirq completion, which is long
-	 * after the request has been unhashed (and even removed from
-	 * the dispatch list).
-	 */
-	union {
-		struct hlist_node hash;	/* merge hash */
-		struct llist_node ipi_list;
-	};
+struct blk_integrity {
+	const struct blk_integrity_profile	*profile;
+	unsigned char				flags;
+	unsigned char				tuple_size;
+	unsigned char				interval_exp;
+	unsigned char				tag_size;
+};
 
+struct gendisk {
 	/*
-	 * The rb_node is only used inside the io scheduler, requests
-	 * are pruned when moved to the dispatch queue. So let the
-	 * completion_data share space with the rb_node.
+	 * major/first_minor/minors should not be set by any new driver, the
+	 * block core will take care of allocating them automatically.
 	 */
-	union {
-		struct rb_node rb_node;	/* sort/lookup */
-		struct bio_vec special_vec;
-		void *completion_data;
-		int error_count; /* for legacy drivers, don't use */
-	};
+	int major;
+	int first_minor;
+	int minors;
 
-	/*
-	 * Three pointers are available for the IO schedulers, if they need
-	 * more they have to dynamically allocate it.  Flush requests are
-	 * never put on the IO scheduler. So let the flush fields share
-	 * space with the elevator data.
-	 */
-	union {
-		struct {
-			struct io_cq		*icq;
-			void			*priv[2];
-		} elv;
-
-		struct {
-			unsigned int		seq;
-			struct list_head	list;
-			rq_end_io_fn		*saved_end_io;
-		} flush;
-	};
-
-	struct gendisk *rq_disk;
-	struct block_device *part;
-#ifdef CONFIG_BLK_RQ_ALLOC_TIME
-	/* Time that the first bio started allocating this request. */
-	u64 alloc_time_ns;
-#endif
-	/* Time that this request was allocated for this IO. */
-	u64 start_time_ns;
-	/* Time that I/O was submitted to the device. */
-	u64 io_start_time_ns;
+	char disk_name[DISK_NAME_LEN];	/* name of major driver */
 
-#ifdef CONFIG_BLK_WBT
-	unsigned short wbt_flags;
-#endif
-	/*
-	 * rq sectors used for blk stats. It has the same value
-	 * with blk_rq_sectors(rq), except that it never be zeroed
-	 * by completion.
-	 */
-	unsigned short stats_sectors;
+	unsigned short events;		/* supported events */
+	unsigned short event_flags;	/* flags related to event processing */
 
-	/*
-	 * Number of scatter-gather DMA addr+len pairs after
-	 * physical address coalescing is performed.
-	 */
-	unsigned short nr_phys_segments;
+	struct xarray part_tbl;
+	struct block_device *part0;
 
-#if defined(CONFIG_BLK_DEV_INTEGRITY)
-	unsigned short nr_integrity_segments;
-#endif
+	const struct block_device_operations *fops;
+	struct request_queue *queue;
+	void *private_data;
 
-#ifdef CONFIG_BLK_INLINE_ENCRYPTION
-	struct bio_crypt_ctx *crypt_ctx;
-	struct blk_ksm_keyslot *crypt_keyslot;
-#endif
+	int flags;
+	unsigned long state;
+#define GD_NEED_PART_SCAN		0
+#define GD_READ_ONLY			1
+#define GD_DEAD				2
+#define GD_NATIVE_CAPACITY		3
+#define GD_ADDED			4
 
-	unsigned short write_hint;
-	unsigned short ioprio;
+	struct mutex open_mutex;	/* open/close mutex */
+	unsigned open_partitions;	/* number of open partitions */
 
-	enum mq_rq_state state;
-	refcount_t ref;
+	struct backing_dev_info	*bdi;
+	struct kobject *slave_dir;
+#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
+	struct list_head slave_bdevs;
+#endif
+	struct timer_rand_state *random;
+	atomic_t sync_io;		/* RAID */
+	struct disk_events *ev;
+#ifdef  CONFIG_BLK_DEV_INTEGRITY
+	struct kobject integrity_kobj;
+#endif	/* CONFIG_BLK_DEV_INTEGRITY */
+#if IS_ENABLED(CONFIG_CDROM)
+	struct cdrom_device_info *cdi;
+#endif
+	int node_id;
+	struct badblocks *bb;
+	struct lockdep_map lockdep_map;
+	u64 diskseq;
+};
 
-	unsigned int timeout;
-	unsigned long deadline;
+static inline bool disk_live(struct gendisk *disk)
+{
+	return !inode_unhashed(disk->part0->bd_inode);
+}
 
-	union {
-		struct __call_single_data csd;
-		u64 fifo_time;
-	};
+/*
+ * The gendisk is refcounted by the part0 block_device, and the bd_device
+ * therein is also used for device model presentation in sysfs.
+ */
+#define dev_to_disk(device) \
+	(dev_to_bdev(device)->bd_disk)
+#define disk_to_dev(disk) \
+	(&((disk)->part0->bd_device))
 
-	/*
-	 * completion callback.
-	 */
-	rq_end_io_fn *end_io;
-	void *end_io_data;
-};
+#if IS_REACHABLE(CONFIG_CDROM)
+#define disk_to_cdi(disk)	((disk)->cdi)
+#else
+#define disk_to_cdi(disk)	NULL
+#endif
 
-static inline bool blk_op_is_passthrough(unsigned int op)
+static inline dev_t disk_devt(struct gendisk *disk)
 {
-	op &= REQ_OP_MASK;
-	return op == REQ_OP_DRV_IN || op == REQ_OP_DRV_OUT;
+	return MKDEV(disk->major, disk->first_minor);
 }
 
-static inline bool blk_rq_is_passthrough(struct request *rq)
+static inline int blk_validate_block_size(unsigned long bsize)
 {
-	return blk_op_is_passthrough(req_op(rq));
+	if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
+		return -EINVAL;
+
+	return 0;
 }
 
-static inline unsigned short req_get_ioprio(struct request *req)
+static inline bool blk_op_is_passthrough(unsigned int op)
 {
-	return req->ioprio;
+	op &= REQ_OP_MASK;
+	return op == REQ_OP_DRV_IN || op == REQ_OP_DRV_OUT;
 }
 
-#include <linux/elevator.h>
-
-struct blk_queue_ctx;
-
-struct bio_vec;
-
-enum blk_eh_timer_return {
-	BLK_EH_DONE,		/* drivers has completed the command */
-	BLK_EH_RESET_TIMER,	/* reset timer and try again */
-};
-
-enum blk_queue_state {
-	Queue_down,
-	Queue_up,
-};
-
-#define BLK_TAG_ALLOC_FIFO 0 /* allocate starting from 0 */
-#define BLK_TAG_ALLOC_RR 1 /* allocate starting from last allocated tag */
-
 /*
  * Zoned block device models (zoned limit).
  *
@@ -308,7 +248,6 @@ struct queue_limits {
 	unsigned int		io_opt;
 	unsigned int		max_discard_sectors;
 	unsigned int		max_hw_discard_sectors;
-	unsigned int		max_write_same_sectors;
 	unsigned int		max_write_zeroes_sectors;
 	unsigned int		max_zone_append_sectors;
 	unsigned int		discard_granularity;
@@ -370,6 +309,34 @@ static inline int blkdev_zone_mgmt_ioctl(struct block_device *bdev,
 
 #endif /* CONFIG_BLK_DEV_ZONED */
 
+/*
+ * Independent access ranges: struct blk_independent_access_range describes
+ * a range of contiguous sectors that can be accessed using device command
+ * execution resources that are independent from the resources used for
+ * other access ranges. This is typically found with single-LUN multi-actuator
+ * HDDs where each access range is served by a different set of heads.
+ * The set of independent ranges supported by the device is defined using
+ * struct blk_independent_access_ranges. The independent ranges must not overlap
+ * and must include all sectors within the disk capacity (no sector holes
+ * allowed).
+ * For a device with multiple ranges, requests targeting sectors in different
+ * ranges can be executed in parallel. A request can straddle an access range
+ * boundary.
+ */
+struct blk_independent_access_range {
+	struct kobject		kobj;
+	struct request_queue	*queue;
+	sector_t		sector;
+	sector_t		nr_sectors;
+};
+
+struct blk_independent_access_ranges {
+	struct kobject				kobj;
+	bool					sysfs_registered;
+	unsigned int				nr_ia_ranges;
+	struct blk_independent_access_range	ia_range[];
+};
+
 struct request_queue {
 	struct request		*last_merge;
 	struct elevator_queue	*elevator;
@@ -387,7 +354,7 @@ struct request_queue {
 	unsigned int		queue_depth;
 
 	/* hw dispatch queues */
-	struct blk_mq_hw_ctx	**queue_hw_ctx;
+	struct xarray		hctx_table;
 	unsigned int		nr_hw_queues;
 
 	/*
@@ -444,23 +411,22 @@ struct request_queue {
 	unsigned int		dma_alignment;
 
 #ifdef CONFIG_BLK_INLINE_ENCRYPTION
-	/* Inline crypto capabilities */
-	struct blk_keyslot_manager *ksm;
+	struct blk_crypto_profile *crypto_profile;
+	struct kobject *crypto_kobject;
 #endif
 
 	unsigned int		rq_timeout;
 	int			poll_nsec;
 
 	struct blk_stat_callback	*poll_cb;
-	struct blk_rq_stat	poll_stat[BLK_MQ_POLL_STATS_BKTS];
+	struct blk_rq_stat	*poll_stat;
 
 	struct timer_list	timeout;
 	struct work_struct	timeout_work;
 
-	atomic_t		nr_active_requests_shared_sbitmap;
+	atomic_t		nr_active_requests_shared_tags;
 
-	struct sbitmap_queue	sched_bitmap_tags;
-	struct sbitmap_queue	sched_breserved_tags;
+	struct blk_mq_tags	*sched_shared_tags;
 
 	struct list_head	icq_list;
 #ifdef CONFIG_BLK_CGROUP
@@ -536,6 +502,8 @@ struct request_queue {
 	 */
 	struct mutex		mq_freeze_lock;
 
+	int			quiesce_depth;
+
 	struct blk_mq_tag_set	*tag_set;
 	struct list_head	tag_set_list;
 	struct bio_set		bio_split;
@@ -549,15 +517,23 @@ struct request_queue {
 
 	bool			mq_sysfs_init_done;
 
-	size_t			cmd_size;
+	/*
+	 * Independent sector access ranges. This is always NULL for
+	 * devices that do not have multiple independent access ranges.
+	 */
+	struct blk_independent_access_ranges *ia_ranges;
 
-#define BLK_MAX_WRITE_HINTS	5
-	u64			write_hints[BLK_MAX_WRITE_HINTS];
+	/**
+	 * @srcu: Sleepable RCU. Use as lock when type of the request queue
+	 * is blocking (BLK_MQ_F_BLOCKING). Must be the last member
+	 */
+	struct srcu_struct	srcu[];
 };
 
 /* Keep blk_queue_flag_name[] in sync with the definitions below */
 #define QUEUE_FLAG_STOPPED	0	/* queue is stopped */
 #define QUEUE_FLAG_DYING	1	/* queue being torn down */
+#define QUEUE_FLAG_HAS_SRCU	2	/* SRCU is allocated */
 #define QUEUE_FLAG_NOMERGES     3	/* disable merge attempts */
 #define QUEUE_FLAG_SAME_COMP	4	/* complete on same CPU-group */
 #define QUEUE_FLAG_FAIL_IO	5	/* fake timeout */
@@ -577,9 +553,7 @@ struct request_queue {
 #define QUEUE_FLAG_FUA		18	/* device supports FUA writes */
 #define QUEUE_FLAG_DAX		19	/* device supports DAX */
 #define QUEUE_FLAG_STATS	20	/* track IO start and completion times */
-#define QUEUE_FLAG_POLL_STATS	21	/* collecting stats for hybrid polling */
 #define QUEUE_FLAG_REGISTERED	22	/* queue has been registered to a disk */
-#define QUEUE_FLAG_SCSI_PASSTHROUGH 23	/* queue supports SCSI commands */
 #define QUEUE_FLAG_QUIESCED	24	/* queue has been quiesced */
 #define QUEUE_FLAG_PCI_P2PDMA	25	/* device supports PCI p2p requests */
 #define QUEUE_FLAG_ZONE_RESETALL 26	/* supports Zone Reset All */
@@ -597,6 +571,7 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
 
 #define blk_queue_stopped(q)	test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
 #define blk_queue_dying(q)	test_bit(QUEUE_FLAG_DYING, &(q)->queue_flags)
+#define blk_queue_has_srcu(q)	test_bit(QUEUE_FLAG_HAS_SRCU, &(q)->queue_flags)
 #define blk_queue_dead(q)	test_bit(QUEUE_FLAG_DEAD, &(q)->queue_flags)
 #define blk_queue_init_done(q)	test_bit(QUEUE_FLAG_INIT_DONE, &(q)->queue_flags)
 #define blk_queue_nomerges(q)	test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags)
@@ -613,8 +588,6 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
 #define blk_queue_secure_erase(q) \
 	(test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags))
 #define blk_queue_dax(q)	test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags)
-#define blk_queue_scsi_passthrough(q)	\
-	test_bit(QUEUE_FLAG_SCSI_PASSTHROUGH, &(q)->queue_flags)
 #define blk_queue_pci_p2pdma(q)	\
 	test_bit(QUEUE_FLAG_PCI_P2PDMA, &(q)->queue_flags)
 #ifdef CONFIG_BLK_RQ_ALLOC_TIME
@@ -638,11 +611,6 @@ extern void blk_clear_pm_only(struct request_queue *q);
 
 #define list_entry_rq(ptr)	list_entry((ptr), struct request, queuelist)
 
-#define rq_data_dir(rq)		(op_is_write(req_op(rq)) ? WRITE : READ)
-
-#define rq_dma_dir(rq) \
-	(op_is_write(req_op(rq)) ? DMA_TO_DEVICE : DMA_FROM_DEVICE)
-
 #define dma_map_bvec(dev, bv, dir, attrs) \
 	dma_map_page_attrs(dev, (bv)->bv_page, (bv)->bv_offset, (bv)->bv_len, \
 	(dir), (attrs))
@@ -758,42 +726,6 @@ static inline unsigned int queue_max_active_zones(const struct request_queue *q)
 }
 #endif /* CONFIG_BLK_DEV_ZONED */
 
-static inline bool rq_is_sync(struct request *rq)
-{
-	return op_is_sync(rq->cmd_flags);
-}
-
-static inline bool rq_mergeable(struct request *rq)
-{
-	if (blk_rq_is_passthrough(rq))
-		return false;
-
-	if (req_op(rq) == REQ_OP_FLUSH)
-		return false;
-
-	if (req_op(rq) == REQ_OP_WRITE_ZEROES)
-		return false;
-
-	if (req_op(rq) == REQ_OP_ZONE_APPEND)
-		return false;
-
-	if (rq->cmd_flags & REQ_NOMERGE_FLAGS)
-		return false;
-	if (rq->rq_flags & RQF_NOMERGE_FLAGS)
-		return false;
-
-	return true;
-}
-
-static inline bool blk_write_same_mergeable(struct bio *a, struct bio *b)
-{
-	if (bio_page(a) == bio_page(b) &&
-	    bio_offset(a) == bio_offset(b))
-		return true;
-
-	return false;
-}
-
 static inline unsigned int blk_queue_depth(struct request_queue *q)
 {
 	if (q->queue_depth)
@@ -808,153 +740,150 @@ static inline unsigned int blk_queue_depth(struct request_queue *q)
 #define BLK_DEFAULT_SG_TIMEOUT	(60 * HZ)
 #define BLK_MIN_SG_TIMEOUT	(7 * HZ)
 
-struct rq_map_data {
-	struct page **pages;
-	int page_order;
-	int nr_entries;
-	unsigned long offset;
-	int null_mapped;
-	int from_user;
-};
-
-struct req_iterator {
-	struct bvec_iter iter;
-	struct bio *bio;
-};
-
 /* This should not be used directly - use rq_for_each_segment */
 #define for_each_bio(_bio)		\
 	for (; _bio; _bio = _bio->bi_next)
-#define __rq_for_each_bio(_bio, rq)	\
-	if ((rq->bio))			\
-		for (_bio = (rq)->bio; _bio; _bio = _bio->bi_next)
-
-#define rq_for_each_segment(bvl, _rq, _iter)			\
-	__rq_for_each_bio(_iter.bio, _rq)			\
-		bio_for_each_segment(bvl, _iter.bio, _iter.iter)
 
-#define rq_for_each_bvec(bvl, _rq, _iter)			\
-	__rq_for_each_bio(_iter.bio, _rq)			\
-		bio_for_each_bvec(bvl, _iter.bio, _iter.iter)
-
-#define rq_iter_last(bvec, _iter)				\
-		(_iter.bio->bi_next == NULL &&			\
-		 bio_iter_last(bvec, _iter.iter))
-
-#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
-# error	"You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform"
-#endif
-#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
-extern void rq_flush_dcache_pages(struct request *rq);
-#else
-static inline void rq_flush_dcache_pages(struct request *rq)
+int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
+				 const struct attribute_group **groups);
+static inline int __must_check add_disk(struct gendisk *disk)
 {
+	return device_add_disk(NULL, disk, NULL);
 }
-#endif
+void del_gendisk(struct gendisk *gp);
+void invalidate_disk(struct gendisk *disk);
+void set_disk_ro(struct gendisk *disk, bool read_only);
+void disk_uevent(struct gendisk *disk, enum kobject_action action);
 
-extern int blk_register_queue(struct gendisk *disk);
-extern void blk_unregister_queue(struct gendisk *disk);
-blk_qc_t submit_bio_noacct(struct bio *bio);
-extern void blk_rq_init(struct request_queue *q, struct request *rq);
-extern void blk_put_request(struct request *);
-extern struct request *blk_get_request(struct request_queue *, unsigned int op,
-				       blk_mq_req_flags_t flags);
-extern int blk_lld_busy(struct request_queue *q);
-extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
-			     struct bio_set *bs, gfp_t gfp_mask,
-			     int (*bio_ctr)(struct bio *, struct bio *, void *),
-			     void *data);
-extern void blk_rq_unprep_clone(struct request *rq);
-extern blk_status_t blk_insert_cloned_request(struct request_queue *q,
-				     struct request *rq);
-int blk_rq_append_bio(struct request *rq, struct bio *bio);
-extern void blk_queue_split(struct bio **);
-extern int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags);
-extern void blk_queue_exit(struct request_queue *q);
-extern void blk_sync_queue(struct request_queue *q);
-extern int blk_rq_map_user(struct request_queue *, struct request *,
-			   struct rq_map_data *, void __user *, unsigned long,
-			   gfp_t);
-extern int blk_rq_unmap_user(struct bio *);
-extern int blk_rq_map_kern(struct request_queue *, struct request *, void *, unsigned int, gfp_t);
-extern int blk_rq_map_user_iov(struct request_queue *, struct request *,
-			       struct rq_map_data *, const struct iov_iter *,
-			       gfp_t);
-extern void blk_execute_rq_nowait(struct gendisk *,
-				  struct request *, int, rq_end_io_fn *);
-
-blk_status_t blk_execute_rq(struct gendisk *bd_disk, struct request *rq,
-			    int at_head);
+static inline int get_disk_ro(struct gendisk *disk)
+{
+	return disk->part0->bd_read_only ||
+		test_bit(GD_READ_ONLY, &disk->state);
+}
 
-/* Helper to convert REQ_OP_XXX to its string format XXX */
-extern const char *blk_op_str(unsigned int op);
+static inline int bdev_read_only(struct block_device *bdev)
+{
+	return bdev->bd_read_only || get_disk_ro(bdev->bd_disk);
+}
 
-int blk_status_to_errno(blk_status_t status);
-blk_status_t errno_to_blk_status(int errno);
+bool set_capacity_and_notify(struct gendisk *disk, sector_t size);
+bool disk_force_media_change(struct gendisk *disk, unsigned int events);
 
-int blk_poll(struct request_queue *q, blk_qc_t cookie, bool spin);
+void add_disk_randomness(struct gendisk *disk) __latent_entropy;
+void rand_initialize_disk(struct gendisk *disk);
 
-static inline struct request_queue *bdev_get_queue(struct block_device *bdev)
+static inline sector_t get_start_sect(struct block_device *bdev)
 {
-	return bdev->bd_disk->queue;	/* this is never NULL */
+	return bdev->bd_start_sect;
 }
 
-/*
- * The basic unit of block I/O is a sector. It is used in a number of contexts
- * in Linux (blk, bio, genhd). The size of one sector is 512 = 2**9
- * bytes. Variables of type sector_t represent an offset or size that is a
- * multiple of 512 bytes. Hence these two constants.
- */
-#ifndef SECTOR_SHIFT
-#define SECTOR_SHIFT 9
-#endif
-#ifndef SECTOR_SIZE
-#define SECTOR_SIZE (1 << SECTOR_SHIFT)
-#endif
-
-#define PAGE_SECTORS_SHIFT	(PAGE_SHIFT - SECTOR_SHIFT)
-#define PAGE_SECTORS		(1 << PAGE_SECTORS_SHIFT)
-#define SECTOR_MASK		(PAGE_SECTORS - 1)
+static inline sector_t bdev_nr_sectors(struct block_device *bdev)
+{
+	return bdev->bd_nr_sectors;
+}
 
-/*
- * blk_rq_pos()			: the current sector
- * blk_rq_bytes()		: bytes left in the entire request
- * blk_rq_cur_bytes()		: bytes left in the current segment
- * blk_rq_err_bytes()		: bytes left till the next error boundary
- * blk_rq_sectors()		: sectors left in the entire request
- * blk_rq_cur_sectors()		: sectors left in the current segment
- * blk_rq_stats_sectors()	: sectors of the entire request used for stats
- */
-static inline sector_t blk_rq_pos(const struct request *rq)
+static inline loff_t bdev_nr_bytes(struct block_device *bdev)
 {
-	return rq->__sector;
+	return (loff_t)bdev_nr_sectors(bdev) << SECTOR_SHIFT;
 }
 
-static inline unsigned int blk_rq_bytes(const struct request *rq)
+static inline sector_t get_capacity(struct gendisk *disk)
 {
-	return rq->__data_len;
+	return bdev_nr_sectors(disk->part0);
 }
 
-static inline int blk_rq_cur_bytes(const struct request *rq)
+static inline u64 sb_bdev_nr_blocks(struct super_block *sb)
 {
-	return rq->bio ? bio_cur_bytes(rq->bio) : 0;
+	return bdev_nr_sectors(sb->s_bdev) >>
+		(sb->s_blocksize_bits - SECTOR_SHIFT);
 }
 
-extern unsigned int blk_rq_err_bytes(const struct request *rq);
+int bdev_disk_changed(struct gendisk *disk, bool invalidate);
 
-static inline unsigned int blk_rq_sectors(const struct request *rq)
+struct gendisk *__alloc_disk_node(struct request_queue *q, int node_id,
+		struct lock_class_key *lkclass);
+void put_disk(struct gendisk *disk);
+struct gendisk *__blk_alloc_disk(int node, struct lock_class_key *lkclass);
+
+/**
+ * blk_alloc_disk - allocate a gendisk structure
+ * @node_id: numa node to allocate on
+ *
+ * Allocate and pre-initialize a gendisk structure for use with BIO based
+ * drivers.
+ *
+ * Context: can sleep
+ */
+#define blk_alloc_disk(node_id)						\
+({									\
+	static struct lock_class_key __key;				\
+									\
+	__blk_alloc_disk(node_id, &__key);				\
+})
+void blk_cleanup_disk(struct gendisk *disk);
+
+int __register_blkdev(unsigned int major, const char *name,
+		void (*probe)(dev_t devt));
+#define register_blkdev(major, name) \
+	__register_blkdev(major, name, NULL)
+void unregister_blkdev(unsigned int major, const char *name);
+
+bool bdev_check_media_change(struct block_device *bdev);
+int __invalidate_device(struct block_device *bdev, bool kill_dirty);
+void set_capacity(struct gendisk *disk, sector_t size);
+
+#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
+int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk);
+void bd_unlink_disk_holder(struct block_device *bdev, struct gendisk *disk);
+int bd_register_pending_holders(struct gendisk *disk);
+#else
+static inline int bd_link_disk_holder(struct block_device *bdev,
+				      struct gendisk *disk)
 {
-	return blk_rq_bytes(rq) >> SECTOR_SHIFT;
+	return 0;
 }
-
-static inline unsigned int blk_rq_cur_sectors(const struct request *rq)
+static inline void bd_unlink_disk_holder(struct block_device *bdev,
+					 struct gendisk *disk)
+{
+}
+static inline int bd_register_pending_holders(struct gendisk *disk)
 {
-	return blk_rq_cur_bytes(rq) >> SECTOR_SHIFT;
+	return 0;
 }
+#endif /* CONFIG_BLOCK_HOLDER_DEPRECATED */
+
+dev_t part_devt(struct gendisk *disk, u8 partno);
+void inc_diskseq(struct gendisk *disk);
+dev_t blk_lookup_devt(const char *name, int partno);
+void blk_request_module(dev_t devt);
+
+extern int blk_register_queue(struct gendisk *disk);
+extern void blk_unregister_queue(struct gendisk *disk);
+void submit_bio_noacct(struct bio *bio);
 
-static inline unsigned int blk_rq_stats_sectors(const struct request *rq)
+extern int blk_lld_busy(struct request_queue *q);
+extern void blk_queue_split(struct bio **);
+extern int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags);
+extern void blk_queue_exit(struct request_queue *q);
+extern void blk_sync_queue(struct request_queue *q);
+
+/* Helper to convert REQ_OP_XXX to its string format XXX */
+extern const char *blk_op_str(unsigned int op);
+
+int blk_status_to_errno(blk_status_t status);
+blk_status_t errno_to_blk_status(int errno);
+
+/* only poll the hardware once, don't continue until a completion was found */
+#define BLK_POLL_ONESHOT		(1 << 0)
+/* do not sleep to wait for the expected completion time */
+#define BLK_POLL_NOSLEEP		(1 << 1)
+int bio_poll(struct bio *bio, struct io_comp_batch *iob, unsigned int flags);
+int iocb_bio_iopoll(struct kiocb *kiocb, struct io_comp_batch *iob,
+			unsigned int flags);
+
+static inline struct request_queue *bdev_get_queue(struct block_device *bdev)
 {
-	return rq->stats_sectors;
+	return bdev->bd_queue;	/* this is never NULL */
 }
 
 #ifdef CONFIG_BLK_DEV_ZONED
@@ -973,42 +902,8 @@ static inline unsigned int bio_zone_is_seq(struct bio *bio)
 	return blk_queue_zone_is_seq(bdev_get_queue(bio->bi_bdev),
 				     bio->bi_iter.bi_sector);
 }
-
-static inline unsigned int blk_rq_zone_no(struct request *rq)
-{
-	return blk_queue_zone_no(rq->q, blk_rq_pos(rq));
-}
-
-static inline unsigned int blk_rq_zone_is_seq(struct request *rq)
-{
-	return blk_queue_zone_is_seq(rq->q, blk_rq_pos(rq));
-}
 #endif /* CONFIG_BLK_DEV_ZONED */
 
-/*
- * Some commands like WRITE SAME have a payload or data transfer size which
- * is different from the size of the request.  Any driver that supports such
- * commands using the RQF_SPECIAL_PAYLOAD flag needs to use this helper to
- * calculate the data transfer size.
- */
-static inline unsigned int blk_rq_payload_bytes(struct request *rq)
-{
-	if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
-		return rq->special_vec.bv_len;
-	return blk_rq_bytes(rq);
-}
-
-/*
- * Return the first full biovec in the request.  The caller needs to check that
- * there are any bvecs before calling this helper.
- */
-static inline struct bio_vec req_bvec(struct request *rq)
-{
-	if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
-		return rq->special_vec;
-	return mp_bvec_iter_bvec(rq->bio->bi_io_vec, rq->bio->bi_iter);
-}
-
 static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q,
 						     int op)
 {
@@ -1016,9 +911,6 @@ static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q,
 		return min(q->limits.max_discard_sectors,
 			   UINT_MAX >> SECTOR_SHIFT);
 
-	if (unlikely(op == REQ_OP_WRITE_SAME))
-		return q->limits.max_write_same_sectors;
-
 	if (unlikely(op == REQ_OP_WRITE_ZEROES))
 		return q->limits.max_write_zeroes_sectors;
 
@@ -1048,47 +940,6 @@ static inline unsigned int blk_max_size_offset(struct request_queue *q,
 	return min(q->limits.max_sectors, chunk_sectors);
 }
 
-static inline unsigned int blk_rq_get_max_sectors(struct request *rq,
-						  sector_t offset)
-{
-	struct request_queue *q = rq->q;
-
-	if (blk_rq_is_passthrough(rq))
-		return q->limits.max_hw_sectors;
-
-	if (!q->limits.chunk_sectors ||
-	    req_op(rq) == REQ_OP_DISCARD ||
-	    req_op(rq) == REQ_OP_SECURE_ERASE)
-		return blk_queue_get_max_sectors(q, req_op(rq));
-
-	return min(blk_max_size_offset(q, offset, 0),
-			blk_queue_get_max_sectors(q, req_op(rq)));
-}
-
-static inline unsigned int blk_rq_count_bios(struct request *rq)
-{
-	unsigned int nr_bios = 0;
-	struct bio *bio;
-
-	__rq_for_each_bio(bio, rq)
-		nr_bios++;
-
-	return nr_bios;
-}
-
-void blk_steal_bios(struct bio_list *list, struct request *rq);
-
-/*
- * Request completion related functions.
- *
- * blk_update_request() completes given number of bytes and updates
- * the request without completing it.
- */
-extern bool blk_update_request(struct request *rq, blk_status_t error,
-			       unsigned int nr_bytes);
-
-extern void blk_abort_request(struct request *);
-
 /*
  * Access functions for manipulating queue properties
  */
@@ -1102,8 +953,6 @@ extern void blk_queue_max_discard_segments(struct request_queue *,
 extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
 extern void blk_queue_max_discard_sectors(struct request_queue *q,
 		unsigned int max_discard_sectors);
-extern void blk_queue_max_write_same_sectors(struct request_queue *q,
-		unsigned int max_write_same_sectors);
 extern void blk_queue_max_write_zeroes_sectors(struct request_queue *q,
 		unsigned int max_write_same_sectors);
 extern void blk_queue_logical_block_size(struct request_queue *, unsigned int);
@@ -1133,50 +982,29 @@ extern void blk_queue_dma_alignment(struct request_queue *, int);
 extern void blk_queue_update_dma_alignment(struct request_queue *, int);
 extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
 extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua);
-extern void blk_queue_required_elevator_features(struct request_queue *q,
-						 unsigned int features);
-extern bool blk_queue_can_use_dma_map_merging(struct request_queue *q,
-					      struct device *dev);
 
-/*
- * Number of physical segments as sent to the device.
- *
- * Normally this is the number of discontiguous data segments sent by the
- * submitter.  But for data-less command like discard we might have no
- * actual data segments submitted, but the driver might have to add it's
- * own special payload.  In that case we still return 1 here so that this
- * special payload will be mapped.
- */
-static inline unsigned short blk_rq_nr_phys_segments(struct request *rq)
-{
-	if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
-		return 1;
-	return rq->nr_phys_segments;
-}
+struct blk_independent_access_ranges *
+disk_alloc_independent_access_ranges(struct gendisk *disk, int nr_ia_ranges);
+void disk_set_independent_access_ranges(struct gendisk *disk,
+				struct blk_independent_access_ranges *iars);
 
 /*
- * Number of discard segments (or ranges) the driver needs to fill in.
- * Each discard bio merged into a request is counted as one segment.
+ * Elevator features for blk_queue_required_elevator_features:
  */
-static inline unsigned short blk_rq_nr_discard_segments(struct request *rq)
-{
-	return max_t(unsigned short, rq->nr_phys_segments, 1);
-}
-
-int __blk_rq_map_sg(struct request_queue *q, struct request *rq,
-		struct scatterlist *sglist, struct scatterlist **last_sg);
-static inline int blk_rq_map_sg(struct request_queue *q, struct request *rq,
-		struct scatterlist *sglist)
-{
-	struct scatterlist *last_sg = NULL;
+/* Supports zoned block devices sequential write constraint */
+#define ELEVATOR_F_ZBD_SEQ_WRITE	(1U << 0)
+/* Supports scheduling on multiple hardware queues */
+#define ELEVATOR_F_MQ_AWARE		(1U << 1)
 
-	return __blk_rq_map_sg(q, rq, sglist, &last_sg);
-}
-extern void blk_dump_rq_flags(struct request *, char *);
+extern void blk_queue_required_elevator_features(struct request_queue *q,
+						 unsigned int features);
+extern bool blk_queue_can_use_dma_map_merging(struct request_queue *q,
+					      struct device *dev);
 
 bool __must_check blk_get_queue(struct request_queue *);
 extern void blk_put_queue(struct request_queue *);
-extern void blk_set_queue_dying(struct request_queue *);
+
+void blk_mark_disk_dead(struct gendisk *disk);
 
 #ifdef CONFIG_BLOCK
 /*
@@ -1187,19 +1015,24 @@ extern void blk_set_queue_dying(struct request_queue *);
  * as the lock contention for request_queue lock is reduced.
  *
  * It is ok not to disable preemption when adding the request to the plug list
- * or when attempting a merge, because blk_schedule_flush_list() will only flush
- * the plug list when the task sleeps by itself. For details, please see
- * schedule() where blk_schedule_flush_plug() is called.
+ * or when attempting a merge. For details, please see schedule() where
+ * blk_flush_plug() is called.
  */
 struct blk_plug {
-	struct list_head mq_list; /* blk-mq requests */
-	struct list_head cb_list; /* md requires an unplug callback */
+	struct request *mq_list; /* blk-mq requests */
+
+	/* if ios_left is > 1, we can batch tag/rq allocations */
+	struct request *cached_rq;
+	unsigned short nr_ios;
+
 	unsigned short rq_count;
+
 	bool multiple_queues;
+	bool has_elevator;
 	bool nowait;
+
+	struct list_head cb_list; /* md requires an unplug callback */
 };
-#define BLK_MAX_REQUEST_COUNT 16
-#define BLK_PLUG_FLUSH_SIZE (128 * 1024)
 
 struct blk_plug_cb;
 typedef void (*blk_plug_cb_fn)(struct blk_plug_cb *, bool);
@@ -1211,32 +1044,14 @@ struct blk_plug_cb {
 extern struct blk_plug_cb *blk_check_plugged(blk_plug_cb_fn unplug,
 					     void *data, int size);
 extern void blk_start_plug(struct blk_plug *);
+extern void blk_start_plug_nr_ios(struct blk_plug *, unsigned short);
 extern void blk_finish_plug(struct blk_plug *);
-extern void blk_flush_plug_list(struct blk_plug *, bool);
 
-static inline void blk_flush_plug(struct task_struct *tsk)
+void __blk_flush_plug(struct blk_plug *plug, bool from_schedule);
+static inline void blk_flush_plug(struct blk_plug *plug, bool async)
 {
-	struct blk_plug *plug = tsk->plug;
-
-	if (plug)
-		blk_flush_plug_list(plug, false);
-}
-
-static inline void blk_schedule_flush_plug(struct task_struct *tsk)
-{
-	struct blk_plug *plug = tsk->plug;
-
 	if (plug)
-		blk_flush_plug_list(plug, true);
-}
-
-static inline bool blk_needs_flush_plug(struct task_struct *tsk)
-{
-	struct blk_plug *plug = tsk->plug;
-
-	return plug &&
-		 (!list_empty(&plug->mq_list) ||
-		 !list_empty(&plug->cb_list));
+		__blk_flush_plug(plug, async);
 }
 
 int blkdev_issue_flush(struct block_device *bdev);
@@ -1245,26 +1060,21 @@ long nr_blockdev_pages(void);
 struct blk_plug {
 };
 
-static inline void blk_start_plug(struct blk_plug *plug)
-{
-}
-
-static inline void blk_finish_plug(struct blk_plug *plug)
+static inline void blk_start_plug_nr_ios(struct blk_plug *plug,
+					 unsigned short nr_ios)
 {
 }
 
-static inline void blk_flush_plug(struct task_struct *task)
+static inline void blk_start_plug(struct blk_plug *plug)
 {
 }
 
-static inline void blk_schedule_flush_plug(struct task_struct *task)
+static inline void blk_finish_plug(struct blk_plug *plug)
 {
 }
 
-
-static inline bool blk_needs_flush_plug(struct task_struct *tsk)
+static inline void blk_flush_plug(struct blk_plug *plug, bool async)
 {
-	return false;
 }
 
 static inline int blkdev_issue_flush(struct block_device *bdev)
@@ -1280,9 +1090,6 @@ static inline long nr_blockdev_pages(void)
 
 extern void blk_io_schedule(void);
 
-extern int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
-		sector_t nr_sects, gfp_t gfp_mask, struct page *page);
-
 #define BLKDEV_DISCARD_SECURE	(1 << 0)	/* issue a secure erase */
 
 extern int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
@@ -1499,22 +1306,6 @@ static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector
 	return offset << SECTOR_SHIFT;
 }
 
-/*
- * Two cases of handling DISCARD merge:
- * If max_discard_segments > 1, the driver takes every bio
- * as a range and send them to controller together. The ranges
- * needn't to be contiguous.
- * Otherwise, the bios/requests will be handled as same as
- * others which should be contiguous.
- */
-static inline bool blk_discard_mergable(struct request *req)
-{
-	if (req_op(req) == REQ_OP_DISCARD &&
-	    queue_max_discard_segments(req->q) > 1)
-		return true;
-	return false;
-}
-
 static inline int bdev_discard_alignment(struct block_device *bdev)
 {
 	struct request_queue *q = bdev_get_queue(bdev);
@@ -1525,16 +1316,6 @@ static inline int bdev_discard_alignment(struct block_device *bdev)
 	return q->limits.discard_alignment;
 }
 
-static inline unsigned int bdev_write_same(struct block_device *bdev)
-{
-	struct request_queue *q = bdev_get_queue(bdev);
-
-	if (q)
-		return q->limits.max_write_same_sectors;
-
-	return 0;
-}
-
 static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev)
 {
 	struct request_queue *q = bdev_get_queue(bdev);
@@ -1628,210 +1409,34 @@ int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork, unsigned lo
 #define MODULE_ALIAS_BLOCKDEV_MAJOR(major) \
 	MODULE_ALIAS("block-major-" __stringify(major) "-*")
 
-#if defined(CONFIG_BLK_DEV_INTEGRITY)
-
-enum blk_integrity_flags {
-	BLK_INTEGRITY_VERIFY		= 1 << 0,
-	BLK_INTEGRITY_GENERATE		= 1 << 1,
-	BLK_INTEGRITY_DEVICE_CAPABLE	= 1 << 2,
-	BLK_INTEGRITY_IP_CHECKSUM	= 1 << 3,
-};
-
-struct blk_integrity_iter {
-	void			*prot_buf;
-	void			*data_buf;
-	sector_t		seed;
-	unsigned int		data_size;
-	unsigned short		interval;
-	const char		*disk_name;
-};
-
-typedef blk_status_t (integrity_processing_fn) (struct blk_integrity_iter *);
-typedef void (integrity_prepare_fn) (struct request *);
-typedef void (integrity_complete_fn) (struct request *, unsigned int);
-
-struct blk_integrity_profile {
-	integrity_processing_fn		*generate_fn;
-	integrity_processing_fn		*verify_fn;
-	integrity_prepare_fn		*prepare_fn;
-	integrity_complete_fn		*complete_fn;
-	const char			*name;
-};
-
-extern void blk_integrity_register(struct gendisk *, struct blk_integrity *);
-extern void blk_integrity_unregister(struct gendisk *);
-extern int blk_integrity_compare(struct gendisk *, struct gendisk *);
-extern int blk_rq_map_integrity_sg(struct request_queue *, struct bio *,
-				   struct scatterlist *);
-extern int blk_rq_count_integrity_sg(struct request_queue *, struct bio *);
-
-static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
-{
-	struct blk_integrity *bi = &disk->queue->integrity;
-
-	if (!bi->profile)
-		return NULL;
-
-	return bi;
-}
-
-static inline
-struct blk_integrity *bdev_get_integrity(struct block_device *bdev)
-{
-	return blk_get_integrity(bdev->bd_disk);
-}
-
-static inline bool
-blk_integrity_queue_supports_integrity(struct request_queue *q)
-{
-	return q->integrity.profile;
-}
-
-static inline bool blk_integrity_rq(struct request *rq)
-{
-	return rq->cmd_flags & REQ_INTEGRITY;
-}
-
-static inline void blk_queue_max_integrity_segments(struct request_queue *q,
-						    unsigned int segs)
-{
-	q->limits.max_integrity_segments = segs;
-}
-
-static inline unsigned short
-queue_max_integrity_segments(const struct request_queue *q)
-{
-	return q->limits.max_integrity_segments;
-}
-
-/**
- * bio_integrity_intervals - Return number of integrity intervals for a bio
- * @bi:		blk_integrity profile for device
- * @sectors:	Size of the bio in 512-byte sectors
- *
- * Description: The block layer calculates everything in 512 byte
- * sectors but integrity metadata is done in terms of the data integrity
- * interval size of the storage device.  Convert the block layer sectors
- * to the appropriate number of integrity intervals.
- */
-static inline unsigned int bio_integrity_intervals(struct blk_integrity *bi,
-						   unsigned int sectors)
-{
-	return sectors >> (bi->interval_exp - 9);
-}
-
-static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi,
-					       unsigned int sectors)
-{
-	return bio_integrity_intervals(bi, sectors) * bi->tuple_size;
-}
-
-/*
- * Return the first bvec that contains integrity data.  Only drivers that are
- * limited to a single integrity segment should use this helper.
- */
-static inline struct bio_vec *rq_integrity_vec(struct request *rq)
-{
-	if (WARN_ON_ONCE(queue_max_integrity_segments(rq->q) > 1))
-		return NULL;
-	return rq->bio->bi_integrity->bip_vec;
-}
-
-#else /* CONFIG_BLK_DEV_INTEGRITY */
-
-struct bio;
-struct block_device;
-struct gendisk;
-struct blk_integrity;
-
-static inline int blk_integrity_rq(struct request *rq)
-{
-	return 0;
-}
-static inline int blk_rq_count_integrity_sg(struct request_queue *q,
-					    struct bio *b)
-{
-	return 0;
-}
-static inline int blk_rq_map_integrity_sg(struct request_queue *q,
-					  struct bio *b,
-					  struct scatterlist *s)
-{
-	return 0;
-}
-static inline struct blk_integrity *bdev_get_integrity(struct block_device *b)
-{
-	return NULL;
-}
-static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
-{
-	return NULL;
-}
-static inline bool
-blk_integrity_queue_supports_integrity(struct request_queue *q)
-{
-	return false;
-}
-static inline int blk_integrity_compare(struct gendisk *a, struct gendisk *b)
-{
-	return 0;
-}
-static inline void blk_integrity_register(struct gendisk *d,
-					 struct blk_integrity *b)
-{
-}
-static inline void blk_integrity_unregister(struct gendisk *d)
-{
-}
-static inline void blk_queue_max_integrity_segments(struct request_queue *q,
-						    unsigned int segs)
-{
-}
-static inline unsigned short queue_max_integrity_segments(const struct request_queue *q)
-{
-	return 0;
-}
-
-static inline unsigned int bio_integrity_intervals(struct blk_integrity *bi,
-						   unsigned int sectors)
-{
-	return 0;
-}
-
-static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi,
-					       unsigned int sectors)
-{
-	return 0;
-}
-
-static inline struct bio_vec *rq_integrity_vec(struct request *rq)
-{
-	return NULL;
-}
-
-#endif /* CONFIG_BLK_DEV_INTEGRITY */
-
 #ifdef CONFIG_BLK_INLINE_ENCRYPTION
 
-bool blk_ksm_register(struct blk_keyslot_manager *ksm, struct request_queue *q);
-
-void blk_ksm_unregister(struct request_queue *q);
+bool blk_crypto_register(struct blk_crypto_profile *profile,
+			 struct request_queue *q);
 
 #else /* CONFIG_BLK_INLINE_ENCRYPTION */
 
-static inline bool blk_ksm_register(struct blk_keyslot_manager *ksm,
-				    struct request_queue *q)
+static inline bool blk_crypto_register(struct blk_crypto_profile *profile,
+				       struct request_queue *q)
 {
 	return true;
 }
 
-static inline void blk_ksm_unregister(struct request_queue *q) { }
-
 #endif /* CONFIG_BLK_INLINE_ENCRYPTION */
 
+enum blk_unique_id {
+	/* these match the Designator Types specified in SPC */
+	BLK_UID_T10	= 1,
+	BLK_UID_EUI64	= 2,
+	BLK_UID_NAA	= 3,
+};
+
+#define NFL4_UFLG_MASK			0x0000003F
 
 struct block_device_operations {
-	blk_qc_t (*submit_bio) (struct bio *bio);
+	void (*submit_bio)(struct bio *bio);
+	int (*poll_bio)(struct bio *bio, struct io_comp_batch *iob,
+			unsigned int flags);
 	int (*open) (struct block_device *, fmode_t);
 	void (*release) (struct gendisk *, fmode_t);
 	int (*rw_page)(struct block_device *, sector_t, struct page *, unsigned int);
@@ -1842,11 +1447,15 @@ struct block_device_operations {
 	void (*unlock_native_capacity) (struct gendisk *);
 	int (*getgeo)(struct block_device *, struct hd_geometry *);
 	int (*set_read_only)(struct block_device *bdev, bool ro);
+	void (*free_disk)(struct gendisk *disk);
 	/* this callback is with swap_lock and sometimes page table lock held */
 	void (*swap_slot_free_notify) (struct block_device *, unsigned long);
 	int (*report_zones)(struct gendisk *, sector_t sector,
 			unsigned int nr_zones, report_zones_cb cb, void *data);
 	char *(*devnode)(struct gendisk *disk, umode_t *mode);
+	/* returns the length of the identifier or a negative errno: */
+	int (*get_unique_id)(struct gendisk *disk, u8 id[16],
+			enum blk_unique_id id_type);
 	struct module *owner;
 	const struct pr_ops *pr_ops;
 
@@ -1869,60 +1478,6 @@ extern int bdev_read_page(struct block_device *, sector_t, struct page *);
 extern int bdev_write_page(struct block_device *, sector_t, struct page *,
 						struct writeback_control *);
 
-#ifdef CONFIG_BLK_DEV_ZONED
-bool blk_req_needs_zone_write_lock(struct request *rq);
-bool blk_req_zone_write_trylock(struct request *rq);
-void __blk_req_zone_write_lock(struct request *rq);
-void __blk_req_zone_write_unlock(struct request *rq);
-
-static inline void blk_req_zone_write_lock(struct request *rq)
-{
-	if (blk_req_needs_zone_write_lock(rq))
-		__blk_req_zone_write_lock(rq);
-}
-
-static inline void blk_req_zone_write_unlock(struct request *rq)
-{
-	if (rq->rq_flags & RQF_ZONE_WRITE_LOCKED)
-		__blk_req_zone_write_unlock(rq);
-}
-
-static inline bool blk_req_zone_is_write_locked(struct request *rq)
-{
-	return rq->q->seq_zones_wlock &&
-		test_bit(blk_rq_zone_no(rq), rq->q->seq_zones_wlock);
-}
-
-static inline bool blk_req_can_dispatch_to_zone(struct request *rq)
-{
-	if (!blk_req_needs_zone_write_lock(rq))
-		return true;
-	return !blk_req_zone_is_write_locked(rq);
-}
-#else
-static inline bool blk_req_needs_zone_write_lock(struct request *rq)
-{
-	return false;
-}
-
-static inline void blk_req_zone_write_lock(struct request *rq)
-{
-}
-
-static inline void blk_req_zone_write_unlock(struct request *rq)
-{
-}
-static inline bool blk_req_zone_is_write_locked(struct request *rq)
-{
-	return false;
-}
-
-static inline bool blk_req_can_dispatch_to_zone(struct request *rq)
-{
-	return true;
-}
-#endif /* CONFIG_BLK_DEV_ZONED */
-
 static inline void blk_wake_io_task(struct task_struct *waiter)
 {
 	/*
@@ -1941,6 +1496,7 @@ unsigned long disk_start_io_acct(struct gendisk *disk, unsigned int sectors,
 void disk_end_io_acct(struct gendisk *disk, unsigned int op,
 		unsigned long start_time);
 
+void bio_start_io_acct_time(struct bio *bio, unsigned long start_time);
 unsigned long bio_start_io_acct(struct bio *bio);
 void bio_end_io_acct_remapped(struct bio *bio, unsigned long start_time,
 		struct block_device *orig_bdev);
@@ -1948,7 +1504,7 @@ void bio_end_io_acct_remapped(struct bio *bio, unsigned long start_time,
 /**
  * bio_end_io_acct - end I/O accounting for bio based drivers
  * @bio:	bio to end account for
- * @start:	start time returned by bio_start_io_acct()
+ * @start_time:	start time returned by bio_start_io_acct()
  */
 static inline void bio_end_io_acct(struct bio *bio, unsigned long start_time)
 {
@@ -1991,6 +1547,9 @@ int truncate_bdev_range(struct block_device *bdev, fmode_t mode, loff_t lstart,
 #ifdef CONFIG_BLOCK
 void invalidate_bdev(struct block_device *bdev);
 int sync_blockdev(struct block_device *bdev);
+int sync_blockdev_nowait(struct block_device *bdev);
+void sync_bdevs(bool wait);
+void printk_all_partitions(void);
 #else
 static inline void invalidate_bdev(struct block_device *bdev)
 {
@@ -1999,10 +1558,29 @@ static inline int sync_blockdev(struct block_device *bdev)
 {
 	return 0;
 }
-#endif
+static inline int sync_blockdev_nowait(struct block_device *bdev)
+{
+	return 0;
+}
+static inline void sync_bdevs(bool wait)
+{
+}
+static inline void printk_all_partitions(void)
+{
+}
+#endif /* CONFIG_BLOCK */
+
 int fsync_bdev(struct block_device *bdev);
 
 int freeze_bdev(struct block_device *bdev);
 int thaw_bdev(struct block_device *bdev);
 
+struct io_comp_batch {
+	struct request *req_list;
+	bool need_ts;
+	void (*complete)(struct io_comp_batch *);
+};
+
+#define DEFINE_IO_COMP_BATCH(name)	struct io_comp_batch name = { }
+
 #endif /* _LINUX_BLKDEV_H */
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index a083e15df608..22501a293fa5 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -2,7 +2,7 @@
 #ifndef BLKTRACE_H
 #define BLKTRACE_H
 
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 #include <linux/relay.h>
 #include <linux/compat.h>
 #include <uapi/linux/blktrace_api.h>
diff --git a/include/linux/bootconfig.h b/include/linux/bootconfig.h
index 537e1b991f11..a4665c7ab07c 100644
--- a/include/linux/bootconfig.h
+++ b/include/linux/bootconfig.h
@@ -7,8 +7,18 @@
  * Author: Masami Hiramatsu <mhiramat@kernel.org>
  */
 
+#ifdef __KERNEL__
 #include <linux/kernel.h>
 #include <linux/types.h>
+#else /* !__KERNEL__ */
+/*
+ * NOTE: This is only for tools/bootconfig, because tools/bootconfig will
+ * run the parser sanity test.
+ * This does NOT mean linux/bootconfig.h is available in the user space.
+ * However, if you change this file, please make sure the tools/bootconfig
+ * has no issue on building and running.
+ */
+#endif
 
 #define BOOTCONFIG_MAGIC	"#BOOTCONFIG\n"
 #define BOOTCONFIG_MAGIC_LEN	12
@@ -25,10 +35,10 @@
  * The checksum will be used with the BOOTCONFIG_MAGIC and the size for
  * embedding the bootconfig in the initrd image.
  */
-static inline __init u32 xbc_calc_checksum(void *data, u32 size)
+static inline __init uint32_t xbc_calc_checksum(void *data, uint32_t size)
 {
 	unsigned char *p = data;
-	u32 ret = 0;
+	uint32_t ret = 0;
 
 	while (size--)
 		ret += *p++;
@@ -38,10 +48,10 @@ static inline __init u32 xbc_calc_checksum(void *data, u32 size)
 
 /* XBC tree node */
 struct xbc_node {
-	u16 next;
-	u16 child;
-	u16 parent;
-	u16 data;
+	uint16_t next;
+	uint16_t child;
+	uint16_t parent;
+	uint16_t data;
 } __attribute__ ((__packed__));
 
 #define XBC_KEY		0
@@ -271,13 +281,12 @@ static inline int __init xbc_node_compose_key(struct xbc_node *node,
 }
 
 /* XBC node initializer */
-int __init xbc_init(char *buf, const char **emsg, int *epos);
+int __init xbc_init(const char *buf, size_t size, const char **emsg, int *epos);
 
+/* XBC node and size information */
+int __init xbc_get_info(int *node_size, size_t *data_size);
 
 /* XBC cleanup data structures */
-void __init xbc_destroy_all(void);
-
-/* Debug dump functions */
-void __init xbc_debug_dump(void);
+void __init xbc_exit(void);
 
 #endif
diff --git a/include/linux/bootmem_info.h b/include/linux/bootmem_info.h
index 2bc8b1f69c93..cc35d010fa94 100644
--- a/include/linux/bootmem_info.h
+++ b/include/linux/bootmem_info.h
@@ -30,7 +30,7 @@ void put_page_bootmem(struct page *page);
  */
 static inline void free_bootmem_page(struct page *page)
 {
-	unsigned long magic = (unsigned long)page->freelist;
+	unsigned long magic = page->index;
 
 	/*
 	 * The reserve_bootmem_region sets the reserved flag on bootmem
diff --git a/include/linux/bottom_half.h b/include/linux/bottom_half.h
index eed86eb0a1de..fc53e0ad56d9 100644
--- a/include/linux/bottom_half.h
+++ b/include/linux/bottom_half.h
@@ -2,6 +2,7 @@
 #ifndef _LINUX_BH_H
 #define _LINUX_BH_H
 
+#include <linux/instruction_pointer.h>
 #include <linux/preempt.h>
 
 #if defined(CONFIG_PREEMPT_RT) || defined(CONFIG_TRACE_IRQFLAGS)
diff --git a/include/linux/bpf-cgroup-defs.h b/include/linux/bpf-cgroup-defs.h
new file mode 100644
index 000000000000..695d1224a71b
--- /dev/null
+++ b/include/linux/bpf-cgroup-defs.h
@@ -0,0 +1,70 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BPF_CGROUP_DEFS_H
+#define _BPF_CGROUP_DEFS_H
+
+#ifdef CONFIG_CGROUP_BPF
+
+#include <linux/list.h>
+#include <linux/percpu-refcount.h>
+#include <linux/workqueue.h>
+
+struct bpf_prog_array;
+
+enum cgroup_bpf_attach_type {
+	CGROUP_BPF_ATTACH_TYPE_INVALID = -1,
+	CGROUP_INET_INGRESS = 0,
+	CGROUP_INET_EGRESS,
+	CGROUP_INET_SOCK_CREATE,
+	CGROUP_SOCK_OPS,
+	CGROUP_DEVICE,
+	CGROUP_INET4_BIND,
+	CGROUP_INET6_BIND,
+	CGROUP_INET4_CONNECT,
+	CGROUP_INET6_CONNECT,
+	CGROUP_INET4_POST_BIND,
+	CGROUP_INET6_POST_BIND,
+	CGROUP_UDP4_SENDMSG,
+	CGROUP_UDP6_SENDMSG,
+	CGROUP_SYSCTL,
+	CGROUP_UDP4_RECVMSG,
+	CGROUP_UDP6_RECVMSG,
+	CGROUP_GETSOCKOPT,
+	CGROUP_SETSOCKOPT,
+	CGROUP_INET4_GETPEERNAME,
+	CGROUP_INET6_GETPEERNAME,
+	CGROUP_INET4_GETSOCKNAME,
+	CGROUP_INET6_GETSOCKNAME,
+	CGROUP_INET_SOCK_RELEASE,
+	MAX_CGROUP_BPF_ATTACH_TYPE
+};
+
+struct cgroup_bpf {
+	/* array of effective progs in this cgroup */
+	struct bpf_prog_array __rcu *effective[MAX_CGROUP_BPF_ATTACH_TYPE];
+
+	/* attached progs to this cgroup and attach flags
+	 * when flags == 0 or BPF_F_ALLOW_OVERRIDE the progs list will
+	 * have either zero or one element
+	 * when BPF_F_ALLOW_MULTI the list can have up to BPF_CGROUP_MAX_PROGS
+	 */
+	struct list_head progs[MAX_CGROUP_BPF_ATTACH_TYPE];
+	u32 flags[MAX_CGROUP_BPF_ATTACH_TYPE];
+
+	/* list of cgroup shared storages */
+	struct list_head storages;
+
+	/* temp storage for effective prog array used by prog_attach/detach */
+	struct bpf_prog_array *inactive;
+
+	/* reference counter used to detach bpf programs after cgroup removal */
+	struct percpu_ref refcnt;
+
+	/* cgroup_bpf is released using a work queue */
+	struct work_struct release_work;
+};
+
+#else /* CONFIG_CGROUP_BPF */
+struct cgroup_bpf {};
+#endif /* CONFIG_CGROUP_BPF */
+
+#endif
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h
index 2746fd804216..88a51b242adc 100644
--- a/include/linux/bpf-cgroup.h
+++ b/include/linux/bpf-cgroup.h
@@ -3,11 +3,12 @@
 #define _BPF_CGROUP_H
 
 #include <linux/bpf.h>
+#include <linux/bpf-cgroup-defs.h>
 #include <linux/errno.h>
 #include <linux/jump_label.h>
 #include <linux/percpu.h>
-#include <linux/percpu-refcount.h>
 #include <linux/rbtree.h>
+#include <net/sock.h>
 #include <uapi/linux/bpf.h>
 
 struct sock;
@@ -23,33 +24,6 @@ struct ctl_table_header;
 struct task_struct;
 
 #ifdef CONFIG_CGROUP_BPF
-enum cgroup_bpf_attach_type {
-	CGROUP_BPF_ATTACH_TYPE_INVALID = -1,
-	CGROUP_INET_INGRESS = 0,
-	CGROUP_INET_EGRESS,
-	CGROUP_INET_SOCK_CREATE,
-	CGROUP_SOCK_OPS,
-	CGROUP_DEVICE,
-	CGROUP_INET4_BIND,
-	CGROUP_INET6_BIND,
-	CGROUP_INET4_CONNECT,
-	CGROUP_INET6_CONNECT,
-	CGROUP_INET4_POST_BIND,
-	CGROUP_INET6_POST_BIND,
-	CGROUP_UDP4_SENDMSG,
-	CGROUP_UDP6_SENDMSG,
-	CGROUP_SYSCTL,
-	CGROUP_UDP4_RECVMSG,
-	CGROUP_UDP6_RECVMSG,
-	CGROUP_GETSOCKOPT,
-	CGROUP_SETSOCKOPT,
-	CGROUP_INET4_GETPEERNAME,
-	CGROUP_INET6_GETPEERNAME,
-	CGROUP_INET4_GETSOCKNAME,
-	CGROUP_INET6_GETSOCKNAME,
-	CGROUP_INET_SOCK_RELEASE,
-	MAX_CGROUP_BPF_ATTACH_TYPE
-};
 
 #define CGROUP_ATYPE(type) \
 	case BPF_##type: return type
@@ -127,56 +101,9 @@ struct bpf_prog_list {
 	struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE];
 };
 
-struct bpf_prog_array;
-
-struct cgroup_bpf {
-	/* array of effective progs in this cgroup */
-	struct bpf_prog_array __rcu *effective[MAX_CGROUP_BPF_ATTACH_TYPE];
-
-	/* attached progs to this cgroup and attach flags
-	 * when flags == 0 or BPF_F_ALLOW_OVERRIDE the progs list will
-	 * have either zero or one element
-	 * when BPF_F_ALLOW_MULTI the list can have up to BPF_CGROUP_MAX_PROGS
-	 */
-	struct list_head progs[MAX_CGROUP_BPF_ATTACH_TYPE];
-	u32 flags[MAX_CGROUP_BPF_ATTACH_TYPE];
-
-	/* list of cgroup shared storages */
-	struct list_head storages;
-
-	/* temp storage for effective prog array used by prog_attach/detach */
-	struct bpf_prog_array *inactive;
-
-	/* reference counter used to detach bpf programs after cgroup removal */
-	struct percpu_ref refcnt;
-
-	/* cgroup_bpf is released using a work queue */
-	struct work_struct release_work;
-};
-
 int cgroup_bpf_inherit(struct cgroup *cgrp);
 void cgroup_bpf_offline(struct cgroup *cgrp);
 
-int __cgroup_bpf_attach(struct cgroup *cgrp,
-			struct bpf_prog *prog, struct bpf_prog *replace_prog,
-			struct bpf_cgroup_link *link,
-			enum bpf_attach_type type, u32 flags);
-int __cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
-			struct bpf_cgroup_link *link,
-			enum bpf_attach_type type);
-int __cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
-		       union bpf_attr __user *uattr);
-
-/* Wrapper for __cgroup_bpf_*() protected by cgroup_mutex */
-int cgroup_bpf_attach(struct cgroup *cgrp,
-		      struct bpf_prog *prog, struct bpf_prog *replace_prog,
-		      struct bpf_cgroup_link *link, enum bpf_attach_type type,
-		      u32 flags);
-int cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
-		      enum bpf_attach_type type);
-int cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
-		     union bpf_attr __user *uattr);
-
 int __cgroup_bpf_run_filter_skb(struct sock *sk,
 				struct sk_buff *skb,
 				enum cgroup_bpf_attach_type atype);
@@ -239,11 +166,23 @@ int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key, void *value);
 int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
 				     void *value, u64 flags);
 
+/* Opportunistic check to see whether we have any BPF program attached*/
+static inline bool cgroup_bpf_sock_enabled(struct sock *sk,
+					   enum cgroup_bpf_attach_type type)
+{
+	struct cgroup *cgrp = sock_cgroup_ptr(&sk->sk_cgrp_data);
+	struct bpf_prog_array *array;
+
+	array = rcu_access_pointer(cgrp->bpf.effective[type]);
+	return array != &bpf_empty_prog_array.hdr;
+}
+
 /* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb)			      \
 ({									      \
 	int __ret = 0;							      \
-	if (cgroup_bpf_enabled(CGROUP_INET_INGRESS))		      \
+	if (cgroup_bpf_enabled(CGROUP_INET_INGRESS) &&			      \
+	    cgroup_bpf_sock_enabled(sk, CGROUP_INET_INGRESS))		      \
 		__ret = __cgroup_bpf_run_filter_skb(sk, skb,		      \
 						    CGROUP_INET_INGRESS); \
 									      \
@@ -255,7 +194,8 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
 	int __ret = 0;							       \
 	if (cgroup_bpf_enabled(CGROUP_INET_EGRESS) && sk && sk == skb->sk) { \
 		typeof(sk) __sk = sk_to_full_sk(sk);			       \
-		if (sk_fullsock(__sk))					       \
+		if (sk_fullsock(__sk) &&				       \
+		    cgroup_bpf_sock_enabled(__sk, CGROUP_INET_EGRESS))	       \
 			__ret = __cgroup_bpf_run_filter_skb(__sk, skb,	       \
 						      CGROUP_INET_EGRESS); \
 	}								       \
@@ -421,7 +361,8 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
 				       kernel_optval)			       \
 ({									       \
 	int __ret = 0;							       \
-	if (cgroup_bpf_enabled(CGROUP_SETSOCKOPT))			       \
+	if (cgroup_bpf_enabled(CGROUP_SETSOCKOPT) &&			       \
+	    cgroup_bpf_sock_enabled(sock, CGROUP_SETSOCKOPT))		       \
 		__ret = __cgroup_bpf_run_filter_setsockopt(sock, level,	       \
 							   optname, optval,    \
 							   optlen,	       \
@@ -441,7 +382,8 @@ int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
 				       max_optlen, retval)		       \
 ({									       \
 	int __ret = retval;						       \
-	if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT))			       \
+	if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT) &&			       \
+	    cgroup_bpf_sock_enabled(sock, CGROUP_GETSOCKOPT))		       \
 		if (!(sock)->sk_prot->bpf_bypass_getsockopt ||		       \
 		    !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
 					tcp_bpf_bypass_getsockopt,	       \
@@ -471,7 +413,6 @@ int cgroup_bpf_prog_query(const union bpf_attr *attr,
 			  union bpf_attr __user *uattr);
 #else
 
-struct cgroup_bpf {};
 static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
 static inline void cgroup_bpf_offline(struct cgroup *cgrp) {}
 
@@ -517,6 +458,7 @@ static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
 
 #define cgroup_bpf_enabled(atype) (0)
 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, atype, t_ctx) ({ 0; })
+#define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, atype) ({ 0; })
 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (0)
 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
diff --git a/include/linux/bpf-netns.h b/include/linux/bpf-netns.h
index 722f799c1a2e..413cfa5e4b07 100644
--- a/include/linux/bpf-netns.h
+++ b/include/linux/bpf-netns.h
@@ -3,15 +3,9 @@
 #define _BPF_NETNS_H
 
 #include <linux/mutex.h>
+#include <net/netns/bpf.h>
 #include <uapi/linux/bpf.h>
 
-enum netns_bpf_attach_type {
-	NETNS_BPF_INVALID = -1,
-	NETNS_BPF_FLOW_DISSECTOR = 0,
-	NETNS_BPF_SK_LOOKUP,
-	MAX_NETNS_BPF_ATTACH_TYPE
-};
-
 static inline enum netns_bpf_attach_type
 to_netns_bpf_attach_type(enum bpf_attach_type attach_type)
 {
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 3db6f6c95489..bdb5298735ce 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -48,6 +48,7 @@ extern struct idr btf_idr;
 extern spinlock_t btf_idr_lock;
 extern struct kobject *btf_kobj;
 
+typedef u64 (*bpf_callback_t)(u64, u64, u64, u64, u64);
 typedef int (*bpf_iter_init_seq_priv_t)(void *private_data,
 					struct bpf_iter_aux_info *aux);
 typedef void (*bpf_iter_fini_seq_priv_t)(void *private_data);
@@ -142,7 +143,8 @@ struct bpf_map_ops {
 	int (*map_set_for_each_callback_args)(struct bpf_verifier_env *env,
 					      struct bpf_func_state *caller,
 					      struct bpf_func_state *callee);
-	int (*map_for_each_callback)(struct bpf_map *map, void *callback_fn,
+	int (*map_for_each_callback)(struct bpf_map *map,
+				     bpf_callback_t callback_fn,
 				     void *callback_ctx, u64 flags);
 
 	/* BTF name and id of struct allocated by map_alloc */
@@ -166,6 +168,7 @@ struct bpf_map {
 	u32 key_size;
 	u32 value_size;
 	u32 max_entries;
+	u64 map_extra; /* any per-map-type extra fields */
 	u32 map_flags;
 	int spin_lock_off; /* >=0 valid offset, <0 error */
 	int timer_off; /* >=0 valid offset, <0 error */
@@ -173,15 +176,15 @@ struct bpf_map {
 	int numa_node;
 	u32 btf_key_type_id;
 	u32 btf_value_type_id;
+	u32 btf_vmlinux_value_type_id;
 	struct btf *btf;
 #ifdef CONFIG_MEMCG_KMEM
 	struct mem_cgroup *memcg;
 #endif
 	char name[BPF_OBJ_NAME_LEN];
-	u32 btf_vmlinux_value_type_id;
 	bool bypass_spec_v1;
 	bool frozen; /* write-once; write-protected by freeze_mutex */
-	/* 22 bytes hole */
+	/* 14 bytes hole */
 
 	/* The 3rd and 4th cacheline with misc members to avoid false sharing
 	 * particularly with refcounting.
@@ -190,7 +193,18 @@ struct bpf_map {
 	atomic64_t usercnt;
 	struct work_struct work;
 	struct mutex freeze_mutex;
-	u64 writecnt; /* writable mmap cnt; protected by freeze_mutex */
+	atomic64_t writecnt;
+	/* 'Ownership' of program-containing map is claimed by the first program
+	 * that is going to use this map or by the first program which FD is
+	 * stored in the map to make sure that all callers and callees have the
+	 * same prog type, JITed flag and xdp_has_frags flag.
+	 */
+	struct {
+		spinlock_t lock;
+		enum bpf_prog_type type;
+		bool jited;
+		bool xdp_has_frags;
+	} owner;
 };
 
 static inline bool map_value_has_spin_lock(const struct bpf_map *map)
@@ -206,11 +220,9 @@ static inline bool map_value_has_timer(const struct bpf_map *map)
 static inline void check_and_init_map_value(struct bpf_map *map, void *dst)
 {
 	if (unlikely(map_value_has_spin_lock(map)))
-		*(struct bpf_spin_lock *)(dst + map->spin_lock_off) =
-			(struct bpf_spin_lock){};
+		memset(dst + map->spin_lock_off, 0, sizeof(struct bpf_spin_lock));
 	if (unlikely(map_value_has_timer(map)))
-		*(struct bpf_timer *)(dst + map->timer_off) =
-			(struct bpf_timer){};
+		memset(dst + map->timer_off, 0, sizeof(struct bpf_timer));
 }
 
 /* copy everything but bpf_spin_lock and bpf_timer. There could be one of each. */
@@ -221,7 +233,8 @@ static inline void copy_map_value(struct bpf_map *map, void *dst, void *src)
 	if (unlikely(map_value_has_spin_lock(map))) {
 		s_off = map->spin_lock_off;
 		s_sz = sizeof(struct bpf_spin_lock);
-	} else if (unlikely(map_value_has_timer(map))) {
+	}
+	if (unlikely(map_value_has_timer(map))) {
 		t_off = map->timer_off;
 		t_sz = sizeof(struct bpf_timer);
 	}
@@ -294,6 +307,50 @@ bool bpf_map_meta_equal(const struct bpf_map *meta0,
 
 extern const struct bpf_map_ops bpf_map_offload_ops;
 
+/* bpf_type_flag contains a set of flags that are applicable to the values of
+ * arg_type, ret_type and reg_type. For example, a pointer value may be null,
+ * or a memory is read-only. We classify types into two categories: base types
+ * and extended types. Extended types are base types combined with a type flag.
+ *
+ * Currently there are no more than 32 base types in arg_type, ret_type and
+ * reg_types.
+ */
+#define BPF_BASE_TYPE_BITS	8
+
+enum bpf_type_flag {
+	/* PTR may be NULL. */
+	PTR_MAYBE_NULL		= BIT(0 + BPF_BASE_TYPE_BITS),
+
+	/* MEM is read-only. When applied on bpf_arg, it indicates the arg is
+	 * compatible with both mutable and immutable memory.
+	 */
+	MEM_RDONLY		= BIT(1 + BPF_BASE_TYPE_BITS),
+
+	/* MEM was "allocated" from a different helper, and cannot be mixed
+	 * with regular non-MEM_ALLOC'ed MEM types.
+	 */
+	MEM_ALLOC		= BIT(2 + BPF_BASE_TYPE_BITS),
+
+	/* MEM is in user address space. */
+	MEM_USER		= BIT(3 + BPF_BASE_TYPE_BITS),
+
+	/* MEM is a percpu memory. MEM_PERCPU tags PTR_TO_BTF_ID. When tagged
+	 * with MEM_PERCPU, PTR_TO_BTF_ID _cannot_ be directly accessed. In
+	 * order to drop this tag, it must be passed into bpf_per_cpu_ptr()
+	 * or bpf_this_cpu_ptr(), which will return the pointer corresponding
+	 * to the specified cpu.
+	 */
+	MEM_PERCPU		= BIT(4 + BPF_BASE_TYPE_BITS),
+
+	__BPF_TYPE_LAST_FLAG	= MEM_PERCPU,
+};
+
+/* Max number of base types. */
+#define BPF_BASE_TYPE_LIMIT	(1UL << BPF_BASE_TYPE_BITS)
+
+/* Max number of all types. */
+#define BPF_TYPE_LIMIT		(__BPF_TYPE_LAST_FLAG | (__BPF_TYPE_LAST_FLAG - 1))
+
 /* function argument constraints */
 enum bpf_arg_type {
 	ARG_DONTCARE = 0,	/* unused argument in helper function */
@@ -305,13 +362,11 @@ enum bpf_arg_type {
 	ARG_PTR_TO_MAP_KEY,	/* pointer to stack used as map key */
 	ARG_PTR_TO_MAP_VALUE,	/* pointer to stack used as map value */
 	ARG_PTR_TO_UNINIT_MAP_VALUE,	/* pointer to valid memory used to store a map value */
-	ARG_PTR_TO_MAP_VALUE_OR_NULL,	/* pointer to stack used as map value or NULL */
 
 	/* the following constraints used to prototype bpf_memcmp() and other
 	 * functions that access data on eBPF program stack
 	 */
 	ARG_PTR_TO_MEM,		/* pointer to valid memory (stack, packet, map value) */
-	ARG_PTR_TO_MEM_OR_NULL, /* pointer to valid memory or NULL */
 	ARG_PTR_TO_UNINIT_MEM,	/* pointer to memory does not need to be initialized,
 				 * helper function must fill all bytes or clear
 				 * them in error case.
@@ -321,42 +376,65 @@ enum bpf_arg_type {
 	ARG_CONST_SIZE_OR_ZERO,	/* number of bytes accessed from memory or 0 */
 
 	ARG_PTR_TO_CTX,		/* pointer to context */
-	ARG_PTR_TO_CTX_OR_NULL,	/* pointer to context or NULL */
 	ARG_ANYTHING,		/* any (initialized) argument is ok */
 	ARG_PTR_TO_SPIN_LOCK,	/* pointer to bpf_spin_lock */
 	ARG_PTR_TO_SOCK_COMMON,	/* pointer to sock_common */
 	ARG_PTR_TO_INT,		/* pointer to int */
 	ARG_PTR_TO_LONG,	/* pointer to long */
 	ARG_PTR_TO_SOCKET,	/* pointer to bpf_sock (fullsock) */
-	ARG_PTR_TO_SOCKET_OR_NULL,	/* pointer to bpf_sock (fullsock) or NULL */
 	ARG_PTR_TO_BTF_ID,	/* pointer to in-kernel struct */
 	ARG_PTR_TO_ALLOC_MEM,	/* pointer to dynamically allocated memory */
-	ARG_PTR_TO_ALLOC_MEM_OR_NULL,	/* pointer to dynamically allocated memory or NULL */
 	ARG_CONST_ALLOC_SIZE_OR_ZERO,	/* number of allocated bytes requested */
 	ARG_PTR_TO_BTF_ID_SOCK_COMMON,	/* pointer to in-kernel sock_common or bpf-mirrored bpf_sock */
 	ARG_PTR_TO_PERCPU_BTF_ID,	/* pointer to in-kernel percpu type */
 	ARG_PTR_TO_FUNC,	/* pointer to a bpf program function */
-	ARG_PTR_TO_STACK_OR_NULL,	/* pointer to stack or NULL */
+	ARG_PTR_TO_STACK,	/* pointer to stack */
 	ARG_PTR_TO_CONST_STR,	/* pointer to a null terminated read-only string */
 	ARG_PTR_TO_TIMER,	/* pointer to bpf_timer */
 	__BPF_ARG_TYPE_MAX,
+
+	/* Extended arg_types. */
+	ARG_PTR_TO_MAP_VALUE_OR_NULL	= PTR_MAYBE_NULL | ARG_PTR_TO_MAP_VALUE,
+	ARG_PTR_TO_MEM_OR_NULL		= PTR_MAYBE_NULL | ARG_PTR_TO_MEM,
+	ARG_PTR_TO_CTX_OR_NULL		= PTR_MAYBE_NULL | ARG_PTR_TO_CTX,
+	ARG_PTR_TO_SOCKET_OR_NULL	= PTR_MAYBE_NULL | ARG_PTR_TO_SOCKET,
+	ARG_PTR_TO_ALLOC_MEM_OR_NULL	= PTR_MAYBE_NULL | ARG_PTR_TO_ALLOC_MEM,
+	ARG_PTR_TO_STACK_OR_NULL	= PTR_MAYBE_NULL | ARG_PTR_TO_STACK,
+
+	/* This must be the last entry. Its purpose is to ensure the enum is
+	 * wide enough to hold the higher bits reserved for bpf_type_flag.
+	 */
+	__BPF_ARG_TYPE_LIMIT	= BPF_TYPE_LIMIT,
 };
+static_assert(__BPF_ARG_TYPE_MAX <= BPF_BASE_TYPE_LIMIT);
 
 /* type of values returned from helper functions */
 enum bpf_return_type {
 	RET_INTEGER,			/* function returns integer */
 	RET_VOID,			/* function doesn't return anything */
 	RET_PTR_TO_MAP_VALUE,		/* returns a pointer to map elem value */
-	RET_PTR_TO_MAP_VALUE_OR_NULL,	/* returns a pointer to map elem value or NULL */
-	RET_PTR_TO_SOCKET_OR_NULL,	/* returns a pointer to a socket or NULL */
-	RET_PTR_TO_TCP_SOCK_OR_NULL,	/* returns a pointer to a tcp_sock or NULL */
-	RET_PTR_TO_SOCK_COMMON_OR_NULL,	/* returns a pointer to a sock_common or NULL */
-	RET_PTR_TO_ALLOC_MEM_OR_NULL,	/* returns a pointer to dynamically allocated memory or NULL */
-	RET_PTR_TO_BTF_ID_OR_NULL,	/* returns a pointer to a btf_id or NULL */
-	RET_PTR_TO_MEM_OR_BTF_ID_OR_NULL, /* returns a pointer to a valid memory or a btf_id or NULL */
+	RET_PTR_TO_SOCKET,		/* returns a pointer to a socket */
+	RET_PTR_TO_TCP_SOCK,		/* returns a pointer to a tcp_sock */
+	RET_PTR_TO_SOCK_COMMON,		/* returns a pointer to a sock_common */
+	RET_PTR_TO_ALLOC_MEM,		/* returns a pointer to dynamically allocated memory */
 	RET_PTR_TO_MEM_OR_BTF_ID,	/* returns a pointer to a valid memory or a btf_id */
 	RET_PTR_TO_BTF_ID,		/* returns a pointer to a btf_id */
+	__BPF_RET_TYPE_MAX,
+
+	/* Extended ret_types. */
+	RET_PTR_TO_MAP_VALUE_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_MAP_VALUE,
+	RET_PTR_TO_SOCKET_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_SOCKET,
+	RET_PTR_TO_TCP_SOCK_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_TCP_SOCK,
+	RET_PTR_TO_SOCK_COMMON_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_SOCK_COMMON,
+	RET_PTR_TO_ALLOC_MEM_OR_NULL	= PTR_MAYBE_NULL | MEM_ALLOC | RET_PTR_TO_ALLOC_MEM,
+	RET_PTR_TO_BTF_ID_OR_NULL	= PTR_MAYBE_NULL | RET_PTR_TO_BTF_ID,
+
+	/* This must be the last entry. Its purpose is to ensure the enum is
+	 * wide enough to hold the higher bits reserved for bpf_type_flag.
+	 */
+	__BPF_RET_TYPE_LIMIT	= BPF_TYPE_LIMIT,
 };
+static_assert(__BPF_RET_TYPE_MAX <= BPF_BASE_TYPE_LIMIT);
 
 /* eBPF function prototype used by verifier to allow BPF_CALLs from eBPF programs
  * to in-kernel helper functions and for adjusting imm32 field in BPF_CALL
@@ -418,18 +496,15 @@ enum bpf_reg_type {
 	PTR_TO_CTX,		 /* reg points to bpf_context */
 	CONST_PTR_TO_MAP,	 /* reg points to struct bpf_map */
 	PTR_TO_MAP_VALUE,	 /* reg points to map element value */
-	PTR_TO_MAP_VALUE_OR_NULL,/* points to map elem value or NULL */
+	PTR_TO_MAP_KEY,		 /* reg points to a map element key */
 	PTR_TO_STACK,		 /* reg == frame_pointer + offset */
 	PTR_TO_PACKET_META,	 /* skb->data - meta_len */
 	PTR_TO_PACKET,		 /* reg points to skb->data */
 	PTR_TO_PACKET_END,	 /* skb->data + headlen */
 	PTR_TO_FLOW_KEYS,	 /* reg points to bpf_flow_keys */
 	PTR_TO_SOCKET,		 /* reg points to struct bpf_sock */
-	PTR_TO_SOCKET_OR_NULL,	 /* reg points to struct bpf_sock or NULL */
 	PTR_TO_SOCK_COMMON,	 /* reg points to sock_common */
-	PTR_TO_SOCK_COMMON_OR_NULL, /* reg points to sock_common or NULL */
 	PTR_TO_TCP_SOCK,	 /* reg points to struct tcp_sock */
-	PTR_TO_TCP_SOCK_OR_NULL, /* reg points to struct tcp_sock or NULL */
 	PTR_TO_TP_BUFFER,	 /* reg points to a writable raw tp's buffer */
 	PTR_TO_XDP_SOCK,	 /* reg points to struct xdp_sock */
 	/* PTR_TO_BTF_ID points to a kernel struct that does not need
@@ -447,18 +522,24 @@ enum bpf_reg_type {
 	 * been checked for null. Used primarily to inform the verifier
 	 * an explicit null check is required for this struct.
 	 */
-	PTR_TO_BTF_ID_OR_NULL,
 	PTR_TO_MEM,		 /* reg points to valid memory region */
-	PTR_TO_MEM_OR_NULL,	 /* reg points to valid memory region or NULL */
-	PTR_TO_RDONLY_BUF,	 /* reg points to a readonly buffer */
-	PTR_TO_RDONLY_BUF_OR_NULL, /* reg points to a readonly buffer or NULL */
-	PTR_TO_RDWR_BUF,	 /* reg points to a read/write buffer */
-	PTR_TO_RDWR_BUF_OR_NULL, /* reg points to a read/write buffer or NULL */
-	PTR_TO_PERCPU_BTF_ID,	 /* reg points to a percpu kernel variable */
+	PTR_TO_BUF,		 /* reg points to a read/write buffer */
 	PTR_TO_FUNC,		 /* reg points to a bpf program function */
-	PTR_TO_MAP_KEY,		 /* reg points to a map element key */
 	__BPF_REG_TYPE_MAX,
+
+	/* Extended reg_types. */
+	PTR_TO_MAP_VALUE_OR_NULL	= PTR_MAYBE_NULL | PTR_TO_MAP_VALUE,
+	PTR_TO_SOCKET_OR_NULL		= PTR_MAYBE_NULL | PTR_TO_SOCKET,
+	PTR_TO_SOCK_COMMON_OR_NULL	= PTR_MAYBE_NULL | PTR_TO_SOCK_COMMON,
+	PTR_TO_TCP_SOCK_OR_NULL		= PTR_MAYBE_NULL | PTR_TO_TCP_SOCK,
+	PTR_TO_BTF_ID_OR_NULL		= PTR_MAYBE_NULL | PTR_TO_BTF_ID,
+
+	/* This must be the last entry. Its purpose is to ensure the enum is
+	 * wide enough to hold the higher bits reserved for bpf_type_flag.
+	 */
+	__BPF_REG_TYPE_LIMIT	= BPF_TYPE_LIMIT,
 };
+static_assert(__BPF_REG_TYPE_MAX <= BPF_BASE_TYPE_LIMIT);
 
 /* The information passed from prog-specific *_is_valid_access
  * back to the verifier.
@@ -481,6 +562,12 @@ bpf_ctx_record_field_size(struct bpf_insn_access_aux *aux, u32 size)
 	aux->ctx_field_size = size;
 }
 
+static inline bool bpf_pseudo_func(const struct bpf_insn *insn)
+{
+	return insn->code == (BPF_LD | BPF_IMM | BPF_DW) &&
+	       insn->src_reg == BPF_PSEUDO_FUNC;
+}
+
 struct bpf_prog_ops {
 	int (*test_run)(struct bpf_prog *prog, const union bpf_attr *kattr,
 			union bpf_attr __user *uattr);
@@ -510,8 +597,7 @@ struct bpf_verifier_ops {
 				 const struct btf *btf,
 				 const struct btf_type *t, int off, int size,
 				 enum bpf_access_type atype,
-				 u32 *next_btf_id);
-	bool (*check_kfunc_call)(u32 kfunc_btf_id);
+				 u32 *next_btf_id, enum bpf_type_flag *flag);
 };
 
 struct bpf_prog_offload_ops {
@@ -723,6 +809,7 @@ int bpf_trampoline_unlink_prog(struct bpf_prog *prog, struct bpf_trampoline *tr)
 struct bpf_trampoline *bpf_trampoline_get(u64 key,
 					  struct bpf_attach_target_info *tgt_info);
 void bpf_trampoline_put(struct bpf_trampoline *tr);
+int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs);
 #define BPF_DISPATCHER_INIT(_name) {				\
 	.mutex = __MUTEX_INITIALIZER(_name.mutex),		\
 	.func = &_name##_func,					\
@@ -765,8 +852,9 @@ void bpf_image_ksym_add(void *data, struct bpf_ksym *ksym);
 void bpf_image_ksym_del(struct bpf_ksym *ksym);
 void bpf_ksym_add(struct bpf_ksym *ksym);
 void bpf_ksym_del(struct bpf_ksym *ksym);
-int bpf_jit_charge_modmem(u32 pages);
-void bpf_jit_uncharge_modmem(u32 pages);
+int bpf_jit_charge_modmem(u32 size);
+void bpf_jit_uncharge_modmem(u32 size);
+bool bpf_prog_has_trampoline(const struct bpf_prog *prog);
 #else
 static inline int bpf_trampoline_link_prog(struct bpf_prog *prog,
 					   struct bpf_trampoline *tr)
@@ -795,6 +883,10 @@ static inline bool is_bpf_image_address(unsigned long address)
 {
 	return false;
 }
+static inline bool bpf_prog_has_trampoline(const struct bpf_prog *prog)
+{
+	return false;
+}
 #endif
 
 struct bpf_func_info_aux {
@@ -866,6 +958,8 @@ struct bpf_prog_aux {
 	bool func_proto_unreliable;
 	bool sleepable;
 	bool tail_call_reachable;
+	bool xdp_has_frags;
+	bool use_bpf_prog_pack;
 	struct hlist_node tramp_hlist;
 	/* BTF_KIND_FUNC_PROTO for valid attach_btf_id */
 	const struct btf_type *attach_func_proto;
@@ -875,6 +969,7 @@ struct bpf_prog_aux {
 	void *jit_data; /* JIT specific data. arch dependent */
 	struct bpf_jit_poke_descriptor *poke_tab;
 	struct bpf_kfunc_desc_tab *kfunc_tab;
+	struct bpf_kfunc_btf_tab *kfunc_btf_tab;
 	u32 size_poke_tab;
 	struct bpf_ksym ksym;
 	const struct bpf_prog_ops *ops;
@@ -884,6 +979,7 @@ struct bpf_prog_aux {
 	struct bpf_prog *prog;
 	struct user_struct *user;
 	u64 load_time; /* ns since boottime */
+	u32 verified_insns;
 	struct bpf_map *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE];
 	char name[BPF_OBJ_NAME_LEN];
 #ifdef CONFIG_SECURITY
@@ -924,16 +1020,6 @@ struct bpf_prog_aux {
 };
 
 struct bpf_array_aux {
-	/* 'Ownership' of prog array is claimed by the first program that
-	 * is going to use this map or by the first program which FD is
-	 * stored in the map to make sure that all callers and callees have
-	 * the same prog type and JITed flag.
-	 */
-	struct {
-		spinlock_t lock;
-		enum bpf_prog_type type;
-		bool jited;
-	} owner;
 	/* Programs with direct jumps into programs part of this array. */
 	struct list_head poke_progs;
 	struct bpf_map *map;
@@ -998,6 +1084,10 @@ bool bpf_struct_ops_get(const void *kdata);
 void bpf_struct_ops_put(const void *kdata);
 int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map, void *key,
 				       void *value);
+int bpf_struct_ops_prepare_trampoline(struct bpf_tramp_progs *tprogs,
+				      struct bpf_prog *prog,
+				      const struct btf_func_model *model,
+				      void *image, void *image_end);
 static inline bool bpf_try_module_get(const void *data, struct module *owner)
 {
 	if (owner == BPF_MODULE_OWNER)
@@ -1012,6 +1102,22 @@ static inline void bpf_module_put(const void *data, struct module *owner)
 	else
 		module_put(owner);
 }
+
+#ifdef CONFIG_NET
+/* Define it here to avoid the use of forward declaration */
+struct bpf_dummy_ops_state {
+	int val;
+};
+
+struct bpf_dummy_ops {
+	int (*test_1)(struct bpf_dummy_ops_state *cb);
+	int (*test_2)(struct bpf_dummy_ops_state *cb, int a1, unsigned short a2,
+		      char a3, unsigned long a4);
+};
+
+int bpf_struct_ops_test_run(struct bpf_prog *prog, const union bpf_attr *kattr,
+			    union bpf_attr __user *uattr);
+#endif
 #else
 static inline const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id)
 {
@@ -1050,7 +1156,7 @@ struct bpf_array {
 };
 
 #define BPF_COMPLEXITY_LIMIT_INSNS      1000000 /* yes. 1M insns */
-#define MAX_TAIL_CALL_CNT 32
+#define MAX_TAIL_CALL_CNT 33
 
 #define BPF_F_ACCESS_MASK	(BPF_F_RDONLY |		\
 				 BPF_F_RDONLY_PROG |	\
@@ -1088,10 +1194,18 @@ struct bpf_event_entry {
 	struct rcu_head rcu;
 };
 
-bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp);
+static inline bool map_type_contains_progs(struct bpf_map *map)
+{
+	return map->map_type == BPF_MAP_TYPE_PROG_ARRAY ||
+	       map->map_type == BPF_MAP_TYPE_DEVMAP ||
+	       map->map_type == BPF_MAP_TYPE_CPUMAP;
+}
+
+bool bpf_prog_map_compatible(struct bpf_map *map, const struct bpf_prog *fp);
 int bpf_prog_calc_tag(struct bpf_prog *fp);
 
 const struct bpf_func_proto *bpf_get_trace_printk_proto(void);
+const struct bpf_func_proto *bpf_get_trace_vprintk_proto(void);
 
 typedef unsigned long (*bpf_ctx_copy_t)(void *dst, const void *src,
 					unsigned long off, unsigned long len);
@@ -1129,6 +1243,19 @@ struct bpf_prog_array {
 	struct bpf_prog_array_item items[];
 };
 
+struct bpf_empty_prog_array {
+	struct bpf_prog_array hdr;
+	struct bpf_prog *null_prog;
+};
+
+/* to avoid allocating empty bpf_prog_array for cgroups that
+ * don't have bpf program attached use one global 'bpf_empty_prog_array'
+ * It will not be modified the caller of bpf_prog_array_alloc()
+ * (since caller requested prog_cnt == 0)
+ * that pointer should be 'freed' by bpf_prog_array_free()
+ */
+extern struct bpf_empty_prog_array bpf_empty_prog_array;
+
 struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags);
 void bpf_prog_array_free(struct bpf_prog_array *progs);
 int bpf_prog_array_length(struct bpf_prog_array *progs);
@@ -1155,6 +1282,7 @@ struct bpf_run_ctx {};
 struct bpf_cg_run_ctx {
 	struct bpf_run_ctx run_ctx;
 	const struct bpf_prog_array_item *prog_item;
+	int retval;
 };
 
 struct bpf_trace_run_ctx {
@@ -1187,19 +1315,19 @@ static inline void bpf_reset_run_ctx(struct bpf_run_ctx *old_ctx)
 
 typedef u32 (*bpf_prog_run_fn)(const struct bpf_prog *prog, const void *ctx);
 
-static __always_inline u32
+static __always_inline int
 BPF_PROG_RUN_ARRAY_CG_FLAGS(const struct bpf_prog_array __rcu *array_rcu,
 			    const void *ctx, bpf_prog_run_fn run_prog,
-			    u32 *ret_flags)
+			    int retval, u32 *ret_flags)
 {
 	const struct bpf_prog_array_item *item;
 	const struct bpf_prog *prog;
 	const struct bpf_prog_array *array;
 	struct bpf_run_ctx *old_run_ctx;
 	struct bpf_cg_run_ctx run_ctx;
-	u32 ret = 1;
 	u32 func_ret;
 
+	run_ctx.retval = retval;
 	migrate_disable();
 	rcu_read_lock();
 	array = rcu_dereference(array_rcu);
@@ -1208,27 +1336,29 @@ BPF_PROG_RUN_ARRAY_CG_FLAGS(const struct bpf_prog_array __rcu *array_rcu,
 	while ((prog = READ_ONCE(item->prog))) {
 		run_ctx.prog_item = item;
 		func_ret = run_prog(prog, ctx);
-		ret &= (func_ret & 1);
+		if (!(func_ret & 1) && !IS_ERR_VALUE((long)run_ctx.retval))
+			run_ctx.retval = -EPERM;
 		*(ret_flags) |= (func_ret >> 1);
 		item++;
 	}
 	bpf_reset_run_ctx(old_run_ctx);
 	rcu_read_unlock();
 	migrate_enable();
-	return ret;
+	return run_ctx.retval;
 }
 
-static __always_inline u32
+static __always_inline int
 BPF_PROG_RUN_ARRAY_CG(const struct bpf_prog_array __rcu *array_rcu,
-		      const void *ctx, bpf_prog_run_fn run_prog)
+		      const void *ctx, bpf_prog_run_fn run_prog,
+		      int retval)
 {
 	const struct bpf_prog_array_item *item;
 	const struct bpf_prog *prog;
 	const struct bpf_prog_array *array;
 	struct bpf_run_ctx *old_run_ctx;
 	struct bpf_cg_run_ctx run_ctx;
-	u32 ret = 1;
 
+	run_ctx.retval = retval;
 	migrate_disable();
 	rcu_read_lock();
 	array = rcu_dereference(array_rcu);
@@ -1236,13 +1366,14 @@ BPF_PROG_RUN_ARRAY_CG(const struct bpf_prog_array __rcu *array_rcu,
 	old_run_ctx = bpf_set_run_ctx(&run_ctx.run_ctx);
 	while ((prog = READ_ONCE(item->prog))) {
 		run_ctx.prog_item = item;
-		ret &= run_prog(prog, ctx);
+		if (!run_prog(prog, ctx) && !IS_ERR_VALUE((long)run_ctx.retval))
+			run_ctx.retval = -EPERM;
 		item++;
 	}
 	bpf_reset_run_ctx(old_run_ctx);
 	rcu_read_unlock();
 	migrate_enable();
-	return ret;
+	return run_ctx.retval;
 }
 
 static __always_inline u32
@@ -1295,19 +1426,21 @@ out:
  *   0: NET_XMIT_SUCCESS  skb should be transmitted
  *   1: NET_XMIT_DROP     skb should be dropped and cn
  *   2: NET_XMIT_CN       skb should be transmitted and cn
- *   3: -EPERM            skb should be dropped
+ *   3: -err              skb should be dropped
  */
 #define BPF_PROG_CGROUP_INET_EGRESS_RUN_ARRAY(array, ctx, func)		\
 	({						\
 		u32 _flags = 0;				\
 		bool _cn;				\
 		u32 _ret;				\
-		_ret = BPF_PROG_RUN_ARRAY_CG_FLAGS(array, ctx, func, &_flags); \
+		_ret = BPF_PROG_RUN_ARRAY_CG_FLAGS(array, ctx, func, 0, &_flags); \
 		_cn = _flags & BPF_RET_SET_CN;		\
-		if (_ret)				\
+		if (_ret && !IS_ERR_VALUE((long)_ret))	\
+			_ret = -EFAULT;			\
+		if (!_ret)				\
 			_ret = (_cn ? NET_XMIT_CN : NET_XMIT_SUCCESS);	\
 		else					\
-			_ret = (_cn ? NET_XMIT_DROP : -EPERM);		\
+			_ret = (_cn ? NET_XMIT_DROP : _ret);		\
 		_ret;					\
 	})
 
@@ -1320,28 +1453,16 @@ extern struct mutex bpf_stats_enabled_mutex;
  * kprobes, tracepoints) to prevent deadlocks on map operations as any of
  * these events can happen inside a region which holds a map bucket lock
  * and can deadlock on it.
- *
- * Use the preemption safe inc/dec variants on RT because migrate disable
- * is preemptible on RT and preemption in the middle of the RMW operation
- * might lead to inconsistent state. Use the raw variants for non RT
- * kernels as migrate_disable() maps to preempt_disable() so the slightly
- * more expensive save operation can be avoided.
  */
 static inline void bpf_disable_instrumentation(void)
 {
 	migrate_disable();
-	if (IS_ENABLED(CONFIG_PREEMPT_RT))
-		this_cpu_inc(bpf_prog_active);
-	else
-		__this_cpu_inc(bpf_prog_active);
+	this_cpu_inc(bpf_prog_active);
 }
 
 static inline void bpf_enable_instrumentation(void)
 {
-	if (IS_ENABLED(CONFIG_PREEMPT_RT))
-		this_cpu_dec(bpf_prog_active);
-	else
-		__this_cpu_dec(bpf_prog_active);
+	this_cpu_dec(bpf_prog_active);
 	migrate_enable();
 }
 
@@ -1387,6 +1508,7 @@ void bpf_map_put(struct bpf_map *map);
 void *bpf_map_area_alloc(u64 size, int numa_node);
 void *bpf_map_area_mmapable_alloc(u64 size, int numa_node);
 void bpf_map_area_free(void *base);
+bool bpf_map_write_active(const struct bpf_map *map);
 void bpf_map_init_from_attr(struct bpf_map *map, union bpf_attr *attr);
 int  generic_map_lookup_batch(struct bpf_map *map,
 			      const union bpf_attr *attr,
@@ -1589,17 +1711,17 @@ void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth);
 struct btf *bpf_get_btf_vmlinux(void);
 
 /* Map specifics */
-struct xdp_buff;
+struct xdp_frame;
 struct sk_buff;
 struct bpf_dtab_netdev;
 struct bpf_cpu_map_entry;
 
 void __dev_flush(void);
-int dev_xdp_enqueue(struct net_device *dev, struct xdp_buff *xdp,
+int dev_xdp_enqueue(struct net_device *dev, struct xdp_frame *xdpf,
 		    struct net_device *dev_rx);
-int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
+int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_frame *xdpf,
 		    struct net_device *dev_rx);
-int dev_map_enqueue_multi(struct xdp_buff *xdp, struct net_device *dev_rx,
+int dev_map_enqueue_multi(struct xdp_frame *xdpf, struct net_device *dev_rx,
 			  struct bpf_map *map, bool exclude_ingress);
 int dev_map_generic_redirect(struct bpf_dtab_netdev *dst, struct sk_buff *skb,
 			     struct bpf_prog *xdp_prog);
@@ -1608,7 +1730,7 @@ int dev_map_redirect_multi(struct net_device *dev, struct sk_buff *skb,
 			   bool exclude_ingress);
 
 void __cpu_map_flush(void);
-int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_buff *xdp,
+int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu, struct xdp_frame *xdpf,
 		    struct net_device *dev_rx);
 int cpu_map_generic_redirect(struct bpf_cpu_map_entry *rcpu,
 			     struct sk_buff *skb);
@@ -1639,14 +1761,36 @@ int bpf_prog_test_run_raw_tp(struct bpf_prog *prog,
 int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog,
 				const union bpf_attr *kattr,
 				union bpf_attr __user *uattr);
-bool bpf_prog_test_check_kfunc_call(u32 kfunc_id);
 bool btf_ctx_access(int off, int size, enum bpf_access_type type,
 		    const struct bpf_prog *prog,
 		    struct bpf_insn_access_aux *info);
+
+static inline bool bpf_tracing_ctx_access(int off, int size,
+					  enum bpf_access_type type)
+{
+	if (off < 0 || off >= sizeof(__u64) * MAX_BPF_FUNC_ARGS)
+		return false;
+	if (type != BPF_READ)
+		return false;
+	if (off % size != 0)
+		return false;
+	return true;
+}
+
+static inline bool bpf_tracing_btf_ctx_access(int off, int size,
+					      enum bpf_access_type type,
+					      const struct bpf_prog *prog,
+					      struct bpf_insn_access_aux *info)
+{
+	if (!bpf_tracing_ctx_access(off, size, type))
+		return false;
+	return btf_ctx_access(off, size, type, prog, info);
+}
+
 int btf_struct_access(struct bpf_verifier_log *log, const struct btf *btf,
 		      const struct btf_type *t, int off, int size,
 		      enum bpf_access_type atype,
-		      u32 *next_btf_id);
+		      u32 *next_btf_id, enum bpf_type_flag *flag);
 bool btf_struct_ids_match(struct bpf_verifier_log *log,
 			  const struct btf *btf, u32 id, int off,
 			  const struct btf *need_btf, u32 need_type_id);
@@ -1677,6 +1821,19 @@ bool bpf_prog_has_kfunc_call(const struct bpf_prog *prog);
 const struct btf_func_model *
 bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
 			 const struct bpf_insn *insn);
+struct bpf_core_ctx {
+	struct bpf_verifier_log *log;
+	const struct btf *btf;
+};
+
+int bpf_core_apply(struct bpf_core_ctx *ctx, const struct bpf_core_relo *relo,
+		   int relo_idx, void *insn);
+
+static inline bool unprivileged_ebpf_enabled(void)
+{
+	return !sysctl_unprivileged_bpf_disabled;
+}
+
 #else /* !CONFIG_BPF_SYSCALL */
 static inline struct bpf_prog *bpf_prog_get(u32 ufd)
 {
@@ -1746,35 +1903,30 @@ static inline int bpf_obj_get_user(const char __user *pathname, int flags)
 	return -EOPNOTSUPP;
 }
 
-static inline bool dev_map_can_have_prog(struct bpf_map *map)
-{
-	return false;
-}
-
 static inline void __dev_flush(void)
 {
 }
 
-struct xdp_buff;
+struct xdp_frame;
 struct bpf_dtab_netdev;
 struct bpf_cpu_map_entry;
 
 static inline
-int dev_xdp_enqueue(struct net_device *dev, struct xdp_buff *xdp,
+int dev_xdp_enqueue(struct net_device *dev, struct xdp_frame *xdpf,
 		    struct net_device *dev_rx)
 {
 	return 0;
 }
 
 static inline
-int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_buff *xdp,
+int dev_map_enqueue(struct bpf_dtab_netdev *dst, struct xdp_frame *xdpf,
 		    struct net_device *dev_rx)
 {
 	return 0;
 }
 
 static inline
-int dev_map_enqueue_multi(struct xdp_buff *xdp, struct net_device *dev_rx,
+int dev_map_enqueue_multi(struct xdp_frame *xdpf, struct net_device *dev_rx,
 			  struct bpf_map *map, bool exclude_ingress)
 {
 	return 0;
@@ -1802,7 +1954,7 @@ static inline void __cpu_map_flush(void)
 }
 
 static inline int cpu_map_enqueue(struct bpf_cpu_map_entry *rcpu,
-				  struct xdp_buff *xdp,
+				  struct xdp_frame *xdpf,
 				  struct net_device *dev_rx)
 {
 	return 0;
@@ -1814,11 +1966,6 @@ static inline int cpu_map_generic_redirect(struct bpf_cpu_map_entry *rcpu,
 	return -EOPNOTSUPP;
 }
 
-static inline bool cpu_map_prog_allowed(struct bpf_map *map)
-{
-	return false;
-}
-
 static inline struct bpf_prog *bpf_prog_get_type_path(const char *name,
 				enum bpf_prog_type type)
 {
@@ -1860,11 +2007,6 @@ static inline int bpf_prog_test_run_sk_lookup(struct bpf_prog *prog,
 	return -ENOTSUPP;
 }
 
-static inline bool bpf_prog_test_check_kfunc_call(u32 kfunc_id)
-{
-	return false;
-}
-
 static inline void bpf_map_put(struct bpf_map *map)
 {
 }
@@ -1895,6 +2037,12 @@ bpf_jit_find_kfunc_model(const struct bpf_prog *prog,
 {
 	return NULL;
 }
+
+static inline bool unprivileged_ebpf_enabled(void)
+{
+	return false;
+}
+
 #endif /* CONFIG_BPF_SYSCALL */
 
 void __bpf_free_used_btfs(struct bpf_prog_aux *aux,
@@ -1959,6 +2107,9 @@ int bpf_prog_test_run_syscall(struct bpf_prog *prog,
 int sock_map_get_from_fd(const union bpf_attr *attr, struct bpf_prog *prog);
 int sock_map_prog_detach(const union bpf_attr *attr, enum bpf_prog_type ptype);
 int sock_map_update_elem_sys(struct bpf_map *map, void *key, void *value, u64 flags);
+int sock_map_bpf_prog_query(const union bpf_attr *attr,
+			    union bpf_attr __user *uattr);
+
 void sock_map_unhash(struct sock *sk);
 void sock_map_close(struct sock *sk, long timeout);
 #else
@@ -2012,6 +2163,12 @@ static inline int sock_map_update_elem_sys(struct bpf_map *map, void *key, void
 {
 	return -EOPNOTSUPP;
 }
+
+static inline int sock_map_bpf_prog_query(const union bpf_attr *attr,
+					  union bpf_attr __user *uattr)
+{
+	return -EINVAL;
+}
 #endif /* CONFIG_BPF_SYSCALL */
 #endif /* CONFIG_NET && CONFIG_BPF_SYSCALL */
 
@@ -2091,6 +2248,7 @@ extern const struct bpf_func_proto bpf_skc_to_tcp_sock_proto;
 extern const struct bpf_func_proto bpf_skc_to_tcp_timewait_sock_proto;
 extern const struct bpf_func_proto bpf_skc_to_tcp_request_sock_proto;
 extern const struct bpf_func_proto bpf_skc_to_udp6_sock_proto;
+extern const struct bpf_func_proto bpf_skc_to_unix_sock_proto;
 extern const struct bpf_func_proto bpf_copy_from_user_proto;
 extern const struct bpf_func_proto bpf_snprintf_btf_proto;
 extern const struct bpf_func_proto bpf_snprintf_proto;
@@ -2105,6 +2263,11 @@ extern const struct bpf_func_proto bpf_for_each_map_elem_proto;
 extern const struct bpf_func_proto bpf_btf_find_by_name_kind_proto;
 extern const struct bpf_func_proto bpf_sk_setsockopt_proto;
 extern const struct bpf_func_proto bpf_sk_getsockopt_proto;
+extern const struct bpf_func_proto bpf_kallsyms_lookup_name_proto;
+extern const struct bpf_func_proto bpf_find_vma_proto;
+extern const struct bpf_func_proto bpf_loop_proto;
+extern const struct bpf_func_proto bpf_strncmp_proto;
+extern const struct bpf_func_proto bpf_copy_from_user_task_proto;
 
 const struct bpf_func_proto *tracing_prog_func_proto(
   enum bpf_func_id func_id, const struct bpf_prog *prog);
@@ -2217,9 +2380,13 @@ enum bpf_text_poke_type {
 int bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t,
 		       void *addr1, void *addr2);
 
+void *bpf_arch_text_copy(void *dst, void *src, size_t len);
+
 struct btf_id_set;
 bool btf_id_set_contains(const struct btf_id_set *set, u32 id);
 
+#define MAX_BPRINTF_VARARGS		12
+
 int bpf_bprintf_prepare(char *fmt, u32 fmt_size, const u64 *raw_args,
 			u32 **bin_buf, u32 num_args);
 void bpf_bprintf_cleanup(void);
diff --git a/include/linux/bpf_local_storage.h b/include/linux/bpf_local_storage.h
index 24496bc28e7b..493e63258497 100644
--- a/include/linux/bpf_local_storage.h
+++ b/include/linux/bpf_local_storage.h
@@ -8,6 +8,7 @@
 #define _BPF_LOCAL_STORAGE_H
 
 #include <linux/bpf.h>
+#include <linux/filter.h>
 #include <linux/rculist.h>
 #include <linux/list.h>
 #include <linux/hash.h>
@@ -16,6 +17,9 @@
 
 #define BPF_LOCAL_STORAGE_CACHE_SIZE	16
 
+#define bpf_rcu_lock_held()                                                    \
+	(rcu_read_lock_held() || rcu_read_lock_trace_held() ||                 \
+	 rcu_read_lock_bh_held())
 struct bpf_local_storage_map_bucket {
 	struct hlist_head list;
 	raw_spinlock_t lock;
@@ -150,15 +154,18 @@ void bpf_selem_unlink_map(struct bpf_local_storage_elem *selem);
 
 struct bpf_local_storage_elem *
 bpf_selem_alloc(struct bpf_local_storage_map *smap, void *owner, void *value,
-		bool charge_mem);
+		bool charge_mem, gfp_t gfp_flags);
 
 int
 bpf_local_storage_alloc(void *owner,
 			struct bpf_local_storage_map *smap,
-			struct bpf_local_storage_elem *first_selem);
+			struct bpf_local_storage_elem *first_selem,
+			gfp_t gfp_flags);
 
 struct bpf_local_storage_data *
 bpf_local_storage_update(void *owner, struct bpf_local_storage_map *smap,
-			 void *value, u64 map_flags);
+			 void *value, u64 map_flags, gfp_t gfp_flags);
+
+void bpf_local_storage_free_rcu(struct rcu_head *rcu);
 
 #endif /* _BPF_LOCAL_STORAGE_H */
diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h
index bbe1eefa4c8a..3e24ad0c4b3c 100644
--- a/include/linux/bpf_types.h
+++ b/include/linux/bpf_types.h
@@ -125,6 +125,7 @@ BPF_MAP_TYPE(BPF_MAP_TYPE_STACK, stack_map_ops)
 BPF_MAP_TYPE(BPF_MAP_TYPE_STRUCT_OPS, bpf_struct_ops_map_ops)
 #endif
 BPF_MAP_TYPE(BPF_MAP_TYPE_RINGBUF, ringbuf_map_ops)
+BPF_MAP_TYPE(BPF_MAP_TYPE_BLOOM_FILTER, bloom_filter_map_ops)
 
 BPF_LINK_TYPE(BPF_LINK_TYPE_RAW_TRACEPOINT, raw_tracepoint)
 BPF_LINK_TYPE(BPF_LINK_TYPE_TRACING, tracing)
@@ -139,3 +140,4 @@ BPF_LINK_TYPE(BPF_LINK_TYPE_XDP, xdp)
 #ifdef CONFIG_PERF_EVENTS
 BPF_LINK_TYPE(BPF_LINK_TYPE_PERF_EVENT, perf)
 #endif
+BPF_LINK_TYPE(BPF_LINK_TYPE_KPROBE_MULTI, kprobe_multi)
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h
index 5424124dbe36..3a9d2d7cc6b7 100644
--- a/include/linux/bpf_verifier.h
+++ b/include/linux/bpf_verifier.h
@@ -18,6 +18,8 @@
  * that converting umax_value to int cannot overflow.
  */
 #define BPF_MAX_VAR_SIZ	(1 << 29)
+/* size of type_str_buf in bpf_verifier. */
+#define TYPE_STR_BUF_LEN 64
 
 /* Liveness marks, used for registers and spilled-regs (in stack slots).
  * Read marks propagate upwards until they find a write mark; they record that
@@ -388,6 +390,8 @@ static inline bool bpf_verifier_log_full(const struct bpf_verifier_log *log)
 #define BPF_LOG_LEVEL	(BPF_LOG_LEVEL1 | BPF_LOG_LEVEL2)
 #define BPF_LOG_MASK	(BPF_LOG_LEVEL | BPF_LOG_STATS)
 #define BPF_LOG_KERNEL	(BPF_LOG_MASK + 1) /* kernel internal flag */
+#define BPF_LOG_MIN_ALIGNMENT 8U
+#define BPF_LOG_ALIGNMENT 40U
 
 static inline bool bpf_verifier_log_needed(const struct bpf_verifier_log *log)
 {
@@ -396,6 +400,13 @@ static inline bool bpf_verifier_log_needed(const struct bpf_verifier_log *log)
 		 log->level == BPF_LOG_KERNEL);
 }
 
+static inline bool
+bpf_verifier_log_attr_valid(const struct bpf_verifier_log *log)
+{
+	return log->len_total >= 128 && log->len_total <= UINT_MAX >> 2 &&
+	       log->level && log->ubuf && !(log->level & ~BPF_LOG_MASK);
+}
+
 #define BPF_MAX_SUBPROGS 256
 
 struct bpf_subprog_info {
@@ -467,6 +478,16 @@ struct bpf_verifier_env {
 	/* longest register parentage chain walked for liveness marking */
 	u32 longest_mark_read_walk;
 	bpfptr_t fd_array;
+
+	/* bit mask to keep track of whether a register has been accessed
+	 * since the last time the function state was printed
+	 */
+	u32 scratched_regs;
+	/* Same as scratched_regs but for stack slots */
+	u64 scratched_stack_slots;
+	u32 prev_log_len, prev_insn_print_len;
+	/* buffer used in reg_type_str() to generate reg_type string */
+	char type_str_buf[TYPE_STR_BUF_LEN];
 };
 
 __printf(2, 0) void bpf_verifier_vlog(struct bpf_verifier_log *log,
@@ -498,8 +519,14 @@ bpf_prog_offload_replace_insn(struct bpf_verifier_env *env, u32 off,
 void
 bpf_prog_offload_remove_insns(struct bpf_verifier_env *env, u32 off, u32 cnt);
 
-int check_ctx_reg(struct bpf_verifier_env *env,
-		  const struct bpf_reg_state *reg, int regno);
+int check_ptr_off_reg(struct bpf_verifier_env *env,
+		      const struct bpf_reg_state *reg, int regno);
+int check_func_arg_reg_off(struct bpf_verifier_env *env,
+			   const struct bpf_reg_state *reg, int regno,
+			   enum bpf_arg_type arg_type,
+			   bool is_release_func);
+int check_kfunc_mem_size_reg(struct bpf_verifier_env *env, struct bpf_reg_state *reg,
+			     u32 regno);
 int check_mem_reg(struct bpf_verifier_env *env, struct bpf_reg_state *reg,
 		   u32 regno, u32 mem_size);
 
@@ -527,5 +554,27 @@ int bpf_check_attach_target(struct bpf_verifier_log *log,
 			    const struct bpf_prog *tgt_prog,
 			    u32 btf_id,
 			    struct bpf_attach_target_info *tgt_info);
+void bpf_free_kfunc_btf_tab(struct bpf_kfunc_btf_tab *tab);
+
+#define BPF_BASE_TYPE_MASK	GENMASK(BPF_BASE_TYPE_BITS - 1, 0)
+
+/* extract base type from bpf_{arg, return, reg}_type. */
+static inline u32 base_type(u32 type)
+{
+	return type & BPF_BASE_TYPE_MASK;
+}
+
+/* extract flags from an extended type. See bpf_type_flag in bpf.h. */
+static inline u32 type_flag(u32 type)
+{
+	return type & ~BPF_BASE_TYPE_MASK;
+}
+
+/* only use after check_attach_btf_id() */
+static inline enum bpf_prog_type resolve_prog_type(struct bpf_prog *prog)
+{
+	return prog->type == BPF_PROG_TYPE_EXT ?
+		prog->aux->dst_prog->type : prog->type;
+}
 
 #endif /* _LINUX_BPF_VERIFIER_H */
diff --git a/include/linux/bpfptr.h b/include/linux/bpfptr.h
index 546e27fc6d46..46e1757d06a3 100644
--- a/include/linux/bpfptr.h
+++ b/include/linux/bpfptr.h
@@ -3,6 +3,7 @@
 #ifndef _LINUX_BPFPTR_H
 #define _LINUX_BPFPTR_H
 
+#include <linux/mm.h>
 #include <linux/sockptr.h>
 
 typedef sockptr_t bpfptr_t;
diff --git a/include/linux/brcmphy.h b/include/linux/brcmphy.h
index c2c2147dfeb8..747fad264033 100644
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -32,6 +32,7 @@
 
 #define PHY_ID_BCM72113			0x35905310
 #define PHY_ID_BCM72116			0x35905350
+#define PHY_ID_BCM72165			0x35905340
 #define PHY_ID_BCM7250			0xae025280
 #define PHY_ID_BCM7255			0xae025120
 #define PHY_ID_BCM7260			0xae025190
@@ -49,6 +50,7 @@
 #define PHY_ID_BCM7439			0x600d8480
 #define PHY_ID_BCM7439_2		0xae025080
 #define PHY_ID_BCM7445			0x600d8510
+#define PHY_ID_BCM7712			0x35905330
 
 #define PHY_ID_BCM_CYGNUS		0xae025200
 #define PHY_ID_BCM_OMEGA		0xae025100
@@ -66,6 +68,7 @@
 #define PHY_BRCM_CLEAR_RGMII_MODE	0x00000004
 #define PHY_BRCM_DIS_TXCRXC_NOENRGY	0x00000008
 #define PHY_BRCM_EN_MASTER_MODE		0x00000010
+#define PHY_BRCM_IDDQ_SUSPEND		0x00000020
 
 /* Broadcom BCM7xxx specific workarounds */
 #define PHY_BRCM_7XXX_REV(x)		(((x) >> 8) & 0xff)
@@ -83,6 +86,7 @@
 
 #define MII_BCM54XX_EXP_DATA	0x15	/* Expansion register data */
 #define MII_BCM54XX_EXP_SEL	0x17	/* Expansion register select */
+#define MII_BCM54XX_EXP_SEL_TOP	0x0d00	/* TOP_MISC expansion register select */
 #define MII_BCM54XX_EXP_SEL_SSD	0x0e00	/* Secondary SerDes select */
 #define MII_BCM54XX_EXP_SEL_ER	0x0f00	/* Expansion register select */
 #define MII_BCM54XX_EXP_SEL_ETC	0x0d00	/* Expansion register spare + 2k mem */
@@ -233,6 +237,7 @@
 #define MII_BCM54XX_EXP_EXP08			0x0F08
 #define  MII_BCM54XX_EXP_EXP08_RJCT_2MHZ	0x0001
 #define  MII_BCM54XX_EXP_EXP08_EARLY_DAC_WAKE	0x0200
+#define  MII_BCM54XX_EXP_EXP08_FORCE_DAC_WAKE	0x0100
 #define MII_BCM54XX_EXP_EXP75			0x0f75
 #define  MII_BCM54XX_EXP_EXP75_VDACCTRL		0x003c
 #define  MII_BCM54XX_EXP_EXP75_CM_OSC		0x0001
@@ -241,6 +246,12 @@
 #define MII_BCM54XX_EXP_EXP97			0x0f97
 #define  MII_BCM54XX_EXP_EXP97_MYST		0x0c0c
 
+/* Top-MISC expansion registers */
+#define BCM54XX_TOP_MISC_IDDQ_CTRL		(MII_BCM54XX_EXP_SEL_TOP + 0x06)
+#define BCM54XX_TOP_MISC_IDDQ_LP		(1 << 0)
+#define BCM54XX_TOP_MISC_IDDQ_SD		(1 << 2)
+#define BCM54XX_TOP_MISC_IDDQ_SR		(1 << 3)
+
 /*
  * BCM5482: Secondary SerDes registers
  */
diff --git a/include/linux/bsg-lib.h b/include/linux/bsg-lib.h
index 6b211323a489..9e97ced2896d 100644
--- a/include/linux/bsg-lib.h
+++ b/include/linux/bsg-lib.h
@@ -10,7 +10,6 @@
 #define _BLK_BSG_
 
 #include <linux/blkdev.h>
-#include <scsi/scsi_request.h>
 
 struct bsg_job;
 struct request;
diff --git a/include/linux/btf.h b/include/linux/btf.h
index 214fde93214b..36bc09b8e890 100644
--- a/include/linux/btf.h
+++ b/include/linux/btf.h
@@ -5,17 +5,40 @@
 #define _LINUX_BTF_H 1
 
 #include <linux/types.h>
+#include <linux/bpfptr.h>
 #include <uapi/linux/btf.h>
 #include <uapi/linux/bpf.h>
 
 #define BTF_TYPE_EMIT(type) ((void)(type *)0)
 #define BTF_TYPE_EMIT_ENUM(enum_val) ((void)enum_val)
 
+enum btf_kfunc_type {
+	BTF_KFUNC_TYPE_CHECK,
+	BTF_KFUNC_TYPE_ACQUIRE,
+	BTF_KFUNC_TYPE_RELEASE,
+	BTF_KFUNC_TYPE_RET_NULL,
+	BTF_KFUNC_TYPE_MAX,
+};
+
 struct btf;
 struct btf_member;
 struct btf_type;
 union bpf_attr;
 struct btf_show;
+struct btf_id_set;
+
+struct btf_kfunc_id_set {
+	struct module *owner;
+	union {
+		struct {
+			struct btf_id_set *check_set;
+			struct btf_id_set *acquire_set;
+			struct btf_id_set *release_set;
+			struct btf_id_set *ret_null_set;
+		};
+		struct btf_id_set *sets[BTF_KFUNC_TYPE_MAX];
+	};
+};
 
 extern const struct file_operations btf_fops;
 
@@ -143,6 +166,53 @@ static inline bool btf_type_is_enum(const struct btf_type *t)
 	return BTF_INFO_KIND(t->info) == BTF_KIND_ENUM;
 }
 
+static inline bool str_is_empty(const char *s)
+{
+	return !s || !s[0];
+}
+
+static inline u16 btf_kind(const struct btf_type *t)
+{
+	return BTF_INFO_KIND(t->info);
+}
+
+static inline bool btf_is_enum(const struct btf_type *t)
+{
+	return btf_kind(t) == BTF_KIND_ENUM;
+}
+
+static inline bool btf_is_composite(const struct btf_type *t)
+{
+	u16 kind = btf_kind(t);
+
+	return kind == BTF_KIND_STRUCT || kind == BTF_KIND_UNION;
+}
+
+static inline bool btf_is_array(const struct btf_type *t)
+{
+	return btf_kind(t) == BTF_KIND_ARRAY;
+}
+
+static inline bool btf_is_int(const struct btf_type *t)
+{
+	return btf_kind(t) == BTF_KIND_INT;
+}
+
+static inline bool btf_is_ptr(const struct btf_type *t)
+{
+	return btf_kind(t) == BTF_KIND_PTR;
+}
+
+static inline u8 btf_int_offset(const struct btf_type *t)
+{
+	return BTF_INT_OFFSET(*(u32 *)(t + 1));
+}
+
+static inline u8 btf_int_encoding(const struct btf_type *t)
+{
+	return BTF_INT_ENCODING(*(u32 *)(t + 1));
+}
+
 static inline bool btf_type_is_scalar(const struct btf_type *t)
 {
 	return btf_type_is_int(t) || btf_type_is_enum(t);
@@ -168,6 +238,11 @@ static inline bool btf_type_is_var(const struct btf_type *t)
 	return BTF_INFO_KIND(t->info) == BTF_KIND_VAR;
 }
 
+static inline bool btf_type_is_type_tag(const struct btf_type *t)
+{
+	return BTF_INFO_KIND(t->info) == BTF_KIND_TYPE_TAG;
+}
+
 /* union is only a special case of struct:
  * all its offsetof(member) == 0
  */
@@ -183,6 +258,11 @@ static inline u16 btf_type_vlen(const struct btf_type *t)
 	return BTF_INFO_VLEN(t->info);
 }
 
+static inline u16 btf_vlen(const struct btf_type *t)
+{
+	return btf_type_vlen(t);
+}
+
 static inline u16 btf_func_linkage(const struct btf_type *t)
 {
 	return BTF_INFO_VLEN(t->info);
@@ -193,31 +273,65 @@ static inline bool btf_type_kflag(const struct btf_type *t)
 	return BTF_INFO_KFLAG(t->info);
 }
 
-static inline u32 btf_member_bit_offset(const struct btf_type *struct_type,
-					const struct btf_member *member)
+static inline u32 __btf_member_bit_offset(const struct btf_type *struct_type,
+					  const struct btf_member *member)
 {
 	return btf_type_kflag(struct_type) ? BTF_MEMBER_BIT_OFFSET(member->offset)
 					   : member->offset;
 }
 
-static inline u32 btf_member_bitfield_size(const struct btf_type *struct_type,
-					   const struct btf_member *member)
+static inline u32 __btf_member_bitfield_size(const struct btf_type *struct_type,
+					     const struct btf_member *member)
 {
 	return btf_type_kflag(struct_type) ? BTF_MEMBER_BITFIELD_SIZE(member->offset)
 					   : 0;
 }
 
+static inline struct btf_member *btf_members(const struct btf_type *t)
+{
+	return (struct btf_member *)(t + 1);
+}
+
+static inline u32 btf_member_bit_offset(const struct btf_type *t, u32 member_idx)
+{
+	const struct btf_member *m = btf_members(t) + member_idx;
+
+	return __btf_member_bit_offset(t, m);
+}
+
+static inline u32 btf_member_bitfield_size(const struct btf_type *t, u32 member_idx)
+{
+	const struct btf_member *m = btf_members(t) + member_idx;
+
+	return __btf_member_bitfield_size(t, m);
+}
+
 static inline const struct btf_member *btf_type_member(const struct btf_type *t)
 {
 	return (const struct btf_member *)(t + 1);
 }
 
+static inline struct btf_array *btf_array(const struct btf_type *t)
+{
+	return (struct btf_array *)(t + 1);
+}
+
+static inline struct btf_enum *btf_enum(const struct btf_type *t)
+{
+	return (struct btf_enum *)(t + 1);
+}
+
 static inline const struct btf_var_secinfo *btf_type_var_secinfo(
 		const struct btf_type *t)
 {
 	return (const struct btf_var_secinfo *)(t + 1);
 }
 
+static inline struct btf_param *btf_params(const struct btf_type *t)
+{
+	return (struct btf_param *)(t + 1);
+}
+
 #ifdef CONFIG_BPF_SYSCALL
 struct bpf_prog;
 
@@ -225,6 +339,11 @@ const struct btf_type *btf_type_by_id(const struct btf *btf, u32 type_id);
 const char *btf_name_by_offset(const struct btf *btf, u32 offset);
 struct btf *btf_parse_vmlinux(void);
 struct btf *bpf_prog_get_target_btf(const struct bpf_prog *prog);
+bool btf_kfunc_id_set_contains(const struct btf *btf,
+			       enum bpf_prog_type prog_type,
+			       enum btf_kfunc_type type, u32 kfunc_btf_id);
+int register_btf_kfunc_id_set(enum bpf_prog_type prog_type,
+			      const struct btf_kfunc_id_set *s);
 #else
 static inline const struct btf_type *btf_type_by_id(const struct btf *btf,
 						    u32 type_id)
@@ -236,6 +355,18 @@ static inline const char *btf_name_by_offset(const struct btf *btf,
 {
 	return NULL;
 }
+static inline bool btf_kfunc_id_set_contains(const struct btf *btf,
+					     enum bpf_prog_type prog_type,
+					     enum btf_kfunc_type type,
+					     u32 kfunc_btf_id)
+{
+	return false;
+}
+static inline int register_btf_kfunc_id_set(enum bpf_prog_type prog_type,
+					    const struct btf_kfunc_id_set *s)
+{
+	return 0;
+}
 #endif
 
 #endif
diff --git a/include/linux/btf_ids.h b/include/linux/btf_ids.h
index 47d9abfbdb55..bc5d9cc34e4c 100644
--- a/include/linux/btf_ids.h
+++ b/include/linux/btf_ids.h
@@ -11,6 +11,7 @@ struct btf_id_set {
 #ifdef CONFIG_DEBUG_INFO_BTF
 
 #include <linux/compiler.h> /* for __PASTE */
+#include <linux/compiler_attributes.h> /* for __maybe_unused */
 
 /*
  * Following macros help to define lists of BTF IDs placed
@@ -73,7 +74,7 @@ asm(							\
 __BTF_ID_LIST(name, local)				\
 extern u32 name[];
 
-#define BTF_ID_LIST_GLOBAL(name)			\
+#define BTF_ID_LIST_GLOBAL(name, n)			\
 __BTF_ID_LIST(name, globl)
 
 /* The BTF_ID_LIST_SINGLE macro defines a BTF_ID_LIST with
@@ -83,7 +84,7 @@ __BTF_ID_LIST(name, globl)
 	BTF_ID_LIST(name) \
 	BTF_ID(prefix, typename)
 #define BTF_ID_LIST_GLOBAL_SINGLE(name, prefix, typename) \
-	BTF_ID_LIST_GLOBAL(name) \
+	BTF_ID_LIST_GLOBAL(name, 1)			  \
 	BTF_ID(prefix, typename)
 
 /*
@@ -146,14 +147,14 @@ extern struct btf_id_set name;
 
 #else
 
-#define BTF_ID_LIST(name) static u32 name[5];
+#define BTF_ID_LIST(name) static u32 __maybe_unused name[5];
 #define BTF_ID(prefix, name)
 #define BTF_ID_UNUSED
-#define BTF_ID_LIST_GLOBAL(name) u32 name[1];
-#define BTF_ID_LIST_SINGLE(name, prefix, typename) static u32 name[1];
-#define BTF_ID_LIST_GLOBAL_SINGLE(name, prefix, typename) u32 name[1];
-#define BTF_SET_START(name) static struct btf_id_set name = { 0 };
-#define BTF_SET_START_GLOBAL(name) static struct btf_id_set name = { 0 };
+#define BTF_ID_LIST_GLOBAL(name, n) u32 __maybe_unused name[n];
+#define BTF_ID_LIST_SINGLE(name, prefix, typename) static u32 __maybe_unused name[1];
+#define BTF_ID_LIST_GLOBAL_SINGLE(name, prefix, typename) u32 __maybe_unused name[1];
+#define BTF_SET_START(name) static struct btf_id_set __maybe_unused name = { 0 };
+#define BTF_SET_START_GLOBAL(name) static struct btf_id_set __maybe_unused name = { 0 };
 #define BTF_SET_END(name)
 
 #endif /* CONFIG_DEBUG_INFO_BTF */
@@ -189,6 +190,18 @@ MAX_BTF_SOCK_TYPE,
 extern u32 btf_sock_ids[];
 #endif
 
-extern u32 btf_task_struct_ids[];
+#define BTF_TRACING_TYPE_xxx	\
+	BTF_TRACING_TYPE(BTF_TRACING_TYPE_TASK, task_struct)	\
+	BTF_TRACING_TYPE(BTF_TRACING_TYPE_FILE, file)		\
+	BTF_TRACING_TYPE(BTF_TRACING_TYPE_VMA, vm_area_struct)
+
+enum {
+#define BTF_TRACING_TYPE(name, type) name,
+BTF_TRACING_TYPE_xxx
+#undef BTF_TRACING_TYPE
+MAX_BTF_TRACING_TYPE,
+};
+
+extern u32 btf_tracing_ids[];
 
 #endif
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 36f33685c8c0..bcb4fe9b8575 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -144,6 +144,7 @@ BUFFER_FNS(Defer_Completion, defer_completion)
 		((struct buffer_head *)page_private(page));	\
 	})
 #define page_has_buffers(page)	PagePrivate(page)
+#define folio_buffers(folio)		folio_get_private(folio)
 
 void buffer_check_dirty_writeback(struct page *page,
 				     bool *dirty, bool *writeback);
@@ -216,16 +217,14 @@ extern int buffer_heads_over_limit;
  * Generic address_space_operations implementations for buffer_head-backed
  * address_spaces.
  */
-void block_invalidatepage(struct page *page, unsigned int offset,
-			  unsigned int length);
+void block_invalidate_folio(struct folio *folio, size_t offset, size_t length);
 int block_write_full_page(struct page *page, get_block_t *get_block,
 				struct writeback_control *wbc);
 int __block_write_full_page(struct inode *inode, struct page *page,
 			get_block_t *get_block, struct writeback_control *wbc,
 			bh_end_io_t *handler);
 int block_read_full_page(struct page*, get_block_t*);
-int block_is_partially_uptodate(struct page *page, unsigned long from,
-				unsigned long count);
+bool block_is_partially_uptodate(struct folio *, size_t from, size_t count);
 int block_write_begin(struct address_space *mapping, loff_t pos, unsigned len,
 		unsigned flags, struct page **pagep, get_block_t *get_block);
 int __block_write_begin(struct page *page, loff_t pos, unsigned len,
@@ -398,7 +397,7 @@ __bread(struct block_device *bdev, sector_t block, unsigned size)
 	return __bread_gfp(bdev, block, size, __GFP_MOVABLE);
 }
 
-extern int __set_page_dirty_buffers(struct page *page);
+bool block_dirty_folio(struct address_space *mapping, struct folio *folio);
 
 #else /* CONFIG_BLOCK */
 
diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index 0e9bdd42dafb..35c25dff651a 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h
@@ -44,7 +44,7 @@ struct bvec_iter {
 
 	unsigned int            bi_bvec_done;	/* number of bytes completed in
 						   current bvec */
-};
+} __packed;
 
 struct bvec_iter_all {
 	struct bio_vec	bv;
diff --git a/include/linux/byteorder/generic.h b/include/linux/byteorder/generic.h
index 4b13e0a3e15b..c9a4c96c9943 100644
--- a/include/linux/byteorder/generic.h
+++ b/include/linux/byteorder/generic.h
@@ -190,7 +190,7 @@ static inline void be64_add_cpu(__be64 *var, u64 val)
 
 static inline void cpu_to_be32_array(__be32 *dst, const u32 *src, size_t len)
 {
-	int i;
+	size_t i;
 
 	for (i = 0; i < len; i++)
 		dst[i] = cpu_to_be32(src[i]);
@@ -198,7 +198,7 @@ static inline void cpu_to_be32_array(__be32 *dst, const u32 *src, size_t len)
 
 static inline void be32_to_cpu_array(u32 *dst, const __be32 *src, size_t len)
 {
-	int i;
+	size_t i;
 
 	for (i = 0; i < len; i++)
 		dst[i] = be32_to_cpu(src[i]);
diff --git a/include/linux/cacheflush.h b/include/linux/cacheflush.h
new file mode 100644
index 000000000000..a6189d21f2ba
--- /dev/null
+++ b/include/linux/cacheflush.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_CACHEFLUSH_H
+#define _LINUX_CACHEFLUSH_H
+
+#include <asm/cacheflush.h>
+
+struct folio;
+
+#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
+#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO
+void flush_dcache_folio(struct folio *folio);
+#endif
+#else
+static inline void flush_dcache_folio(struct folio *folio)
+{
+}
+#define ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO 0
+#endif /* ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE */
+
+#endif /* _LINUX_CACHEFLUSH_H */
diff --git a/include/linux/cacheinfo.h b/include/linux/cacheinfo.h
index 2f909ed084c6..4ff37cb763ae 100644
--- a/include/linux/cacheinfo.h
+++ b/include/linux/cacheinfo.h
@@ -3,7 +3,6 @@
 #define _LINUX_CACHEINFO_H
 
 #include <linux/bitops.h>
-#include <linux/cpu.h>
 #include <linux/cpumask.h>
 #include <linux/smp.h>
 
diff --git a/include/linux/can/bittiming.h b/include/linux/can/bittiming.h
index 9de6e9053e34..7ae21c0f7f23 100644
--- a/include/linux/can/bittiming.h
+++ b/include/linux/can/bittiming.h
@@ -12,12 +12,8 @@
 #define CAN_SYNC_SEG 1
 
 
-/* Kilobits and Megabits per second */
-#define CAN_KBPS 1000UL
-#define CAN_MBPS 1000000UL
-
-/* Megahertz */
-#define CAN_MHZ 1000000UL
+#define CAN_CTRLMODE_TDC_MASK					\
+	(CAN_CTRLMODE_TDC_AUTO | CAN_CTRLMODE_TDC_MANUAL)
 
 /*
  * struct can_tdc - CAN FD Transmission Delay Compensation parameters
@@ -28,34 +24,54 @@
  *
  * To solve this issue, ISO 11898-1 introduces in section 11.3.3
  * "Transmitter delay compensation" a SSP (Secondary Sample Point)
- * equal to the distance, in time quanta, from the start of the bit
- * time on the TX pin to the actual measurement on the RX pin.
+ * equal to the distance from the start of the bit time on the TX pin
+ * to the actual measurement on the RX pin.
  *
  * This structure contains the parameters to calculate that SSP.
  *
- * @tdcv: Transmitter Delay Compensation Value. Distance, in time
- *	quanta, from when the bit is sent on the TX pin to when it is
- *	received on the RX pin of the transmitter. Possible options:
+ * -+----------- one bit ----------+-- TX pin
+ *  |<--- Sample Point --->|
  *
- *	  0: automatic mode. The controller dynamically measures @tdcv
- *	  for each transmitted CAN FD frame.
+ *                         --+----------- one bit ----------+-- RX pin
+ *  |<-------- TDCV -------->|
+ *                           |<------- TDCO ------->|
+ *  |<----------- Secondary Sample Point ---------->|
  *
- *	  Other values: manual mode. Use the fixed provided value.
+ * To increase precision, contrary to the other bittiming parameters
+ * which are measured in time quanta, the TDC parameters are measured
+ * in clock periods (also referred as "minimum time quantum" in ISO
+ * 11898-1).
  *
- * @tdco: Transmitter Delay Compensation Offset. Offset value, in time
- *	quanta, defining the distance between the start of the bit
- *	reception on the RX pin of the transceiver and the SSP
- *	position such that SSP = @tdcv + @tdco.
+ * @tdcv: Transmitter Delay Compensation Value. The time needed for
+ *	the signal to propagate, i.e. the distance, in clock periods,
+ *	from the start of the bit on the TX pin to when it is received
+ *	on the RX pin. @tdcv depends on the controller modes:
+ *
+ *	  CAN_CTRLMODE_TDC_AUTO is set: The transceiver dynamically
+ *	  measures @tdcv for each transmitted CAN FD frame and the
+ *	  value provided here should be ignored.
+ *
+ *	  CAN_CTRLMODE_TDC_MANUAL is set: use the fixed provided @tdcv
+ *	  value.
  *
- *	If @tdco is zero, then TDC is disabled and both @tdcv and
- *	@tdcf should be ignored.
+ *	N.B. CAN_CTRLMODE_TDC_AUTO and CAN_CTRLMODE_TDC_MANUAL are
+ *	mutually exclusive. Only one can be set at a time. If both
+ *	CAN_TDC_CTRLMODE_AUTO and CAN_TDC_CTRLMODE_MANUAL are unset,
+ *	TDC is disabled and all the values of this structure should be
+ *	ignored.
+ *
+ * @tdco: Transmitter Delay Compensation Offset. Offset value, in
+ *	clock periods, defining the distance between the start of the
+ *	bit reception on the RX pin of the transceiver and the SSP
+ *	position such that SSP = @tdcv + @tdco.
  *
  * @tdcf: Transmitter Delay Compensation Filter window. Defines the
- *	minimum value for the SSP position in time quanta. If SSP is
- *	less than @tdcf, then no delay compensations occur and the
- *	normal sampling point is used instead. The feature is enabled
- *	if and only if @tdcv is set to zero (automatic mode) and @tdcf
- *	is configured to a value greater than @tdco.
+ *	minimum value for the SSP position in clock periods. If the
+ *	SSP position is less than @tdcf, then no delay compensations
+ *	occur and the normal sampling point is used instead. The
+ *	feature is enabled if and only if @tdcv is set to zero
+ *	(automatic mode) and @tdcf is configured to a value greater
+ *	than @tdco.
  */
 struct can_tdc {
 	u32 tdcv;
@@ -67,42 +83,60 @@ struct can_tdc {
  * struct can_tdc_const - CAN hardware-dependent constant for
  *	Transmission Delay Compensation
  *
- * @tdcv_max: Transmitter Delay Compensation Value maximum value.
- *	Should be set to zero if the controller does not support
- *	manual mode for tdcv.
+ * @tdcv_min: Transmitter Delay Compensation Value minimum value. If
+ *	the controller does not support manual mode for tdcv
+ *	(c.f. flag CAN_CTRLMODE_TDC_MANUAL) then this value is
+ *	ignored.
+ * @tdcv_max: Transmitter Delay Compensation Value maximum value. If
+ *	the controller does not support manual mode for tdcv
+ *	(c.f. flag CAN_CTRLMODE_TDC_MANUAL) then this value is
+ *	ignored.
+ *
+ * @tdco_min: Transmitter Delay Compensation Offset minimum value.
  * @tdco_max: Transmitter Delay Compensation Offset maximum value.
  *	Should not be zero. If the controller does not support TDC,
  *	then the pointer to this structure should be NULL.
+ *
+ * @tdcf_min: Transmitter Delay Compensation Filter window minimum
+ *	value. If @tdcf_max is zero, this value is ignored.
  * @tdcf_max: Transmitter Delay Compensation Filter window maximum
  *	value. Should be set to zero if the controller does not
  *	support this feature.
  */
 struct can_tdc_const {
+	u32 tdcv_min;
 	u32 tdcv_max;
+	u32 tdco_min;
 	u32 tdco_max;
+	u32 tdcf_min;
 	u32 tdcf_max;
 };
 
 #ifdef CONFIG_CAN_CALC_BITTIMING
-int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,
+int can_calc_bittiming(const struct net_device *dev, struct can_bittiming *bt,
 		       const struct can_bittiming_const *btc);
 
-void can_calc_tdco(struct net_device *dev);
+void can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const,
+		   const struct can_bittiming *dbt,
+		   u32 *ctrlmode, u32 ctrlmode_supported);
 #else /* !CONFIG_CAN_CALC_BITTIMING */
 static inline int
-can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,
+can_calc_bittiming(const struct net_device *dev, struct can_bittiming *bt,
 		   const struct can_bittiming_const *btc)
 {
 	netdev_err(dev, "bit-timing calculation not available\n");
 	return -EINVAL;
 }
 
-static inline void can_calc_tdco(struct net_device *dev)
+static inline void
+can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const,
+	      const struct can_bittiming *dbt,
+	      u32 *ctrlmode, u32 ctrlmode_supported)
 {
 }
 #endif /* CONFIG_CAN_CALC_BITTIMING */
 
-int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt,
+int can_get_bittiming(const struct net_device *dev, struct can_bittiming *bt,
 		      const struct can_bittiming_const *btc,
 		      const u32 *bitrate_const,
 		      const unsigned int bitrate_const_cnt);
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 2413253e54c7..c2ea47f30046 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -64,12 +64,14 @@ struct can_priv {
 	struct gpio_desc *termination_gpio;
 	u16 termination_gpio_ohms[CAN_TERMINATION_GPIO_MAX];
 
+	unsigned int echo_skb_max;
+	struct sk_buff **echo_skb;
+
 	enum can_state state;
 
 	/* CAN controller features - see include/uapi/linux/can/netlink.h */
 	u32 ctrlmode;		/* current options setting */
 	u32 ctrlmode_supported;	/* options that can be modified by netlink */
-	u32 ctrlmode_static;	/* static enabled options for driver/hardware */
 
 	int restart_ms;
 	struct delayed_work restart_work;
@@ -82,9 +84,7 @@ struct can_priv {
 			    enum can_state *state);
 	int (*do_get_berr_counter)(const struct net_device *dev,
 				   struct can_berr_counter *bec);
-
-	unsigned int echo_skb_max;
-	struct sk_buff **echo_skb;
+	int (*do_get_auto_tdcv)(const struct net_device *dev, u32 *tdcv);
 
 #ifdef CONFIG_CAN_LEDS
 	struct led_trigger *tx_led_trig;
@@ -96,20 +96,64 @@ struct can_priv {
 #endif
 };
 
+static inline bool can_tdc_is_enabled(const struct can_priv *priv)
+{
+	return !!(priv->ctrlmode & CAN_CTRLMODE_TDC_MASK);
+}
+
+/*
+ * can_get_relative_tdco() - TDCO relative to the sample point
+ *
+ * struct can_tdc::tdco represents the absolute offset from TDCV. Some
+ * controllers use instead an offset relative to the Sample Point (SP)
+ * such that:
+ *
+ * SSP = TDCV + absolute TDCO
+ *     = TDCV + SP + relative TDCO
+ *
+ * -+----------- one bit ----------+-- TX pin
+ *  |<--- Sample Point --->|
+ *
+ *                         --+----------- one bit ----------+-- RX pin
+ *  |<-------- TDCV -------->|
+ *                           |<------------------------>| absolute TDCO
+ *                           |<--- Sample Point --->|
+ *                           |                      |<->| relative TDCO
+ *  |<------------- Secondary Sample Point ------------>|
+ */
+static inline s32 can_get_relative_tdco(const struct can_priv *priv)
+{
+	const struct can_bittiming *dbt = &priv->data_bittiming;
+	s32 sample_point_in_tc = (CAN_SYNC_SEG + dbt->prop_seg +
+				  dbt->phase_seg1) * dbt->brp;
+
+	return (s32)priv->tdc.tdco - sample_point_in_tc;
+}
 
 /* helper to define static CAN controller features at device creation time */
-static inline void can_set_static_ctrlmode(struct net_device *dev,
-					   u32 static_mode)
+static inline int __must_check can_set_static_ctrlmode(struct net_device *dev,
+						       u32 static_mode)
 {
 	struct can_priv *priv = netdev_priv(dev);
 
 	/* alloc_candev() succeeded => netdev_priv() is valid at this point */
+	if (priv->ctrlmode_supported & static_mode) {
+		netdev_warn(dev,
+			    "Controller features can not be supported and static at the same time\n");
+		return -EINVAL;
+	}
 	priv->ctrlmode = static_mode;
-	priv->ctrlmode_static = static_mode;
 
 	/* override MTU which was set by default in can_setup()? */
 	if (static_mode & CAN_CTRLMODE_FD)
 		dev->mtu = CANFD_MTU;
+
+	return 0;
+}
+
+static inline u32 can_get_static_ctrlmode(struct can_priv *priv)
+{
+	return priv->ctrlmode & ~priv->ctrlmode_supported;
 }
 
 void can_setup(struct net_device *dev);
diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h
index d311bc369a39..fdb22b00674a 100644
--- a/include/linux/can/skb.h
+++ b/include/linux/can/skb.h
@@ -21,8 +21,9 @@ int can_put_echo_skb(struct sk_buff *skb, struct net_device *dev,
 		     unsigned int idx, unsigned int frame_len);
 struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx,
 				   u8 *len_ptr, unsigned int *frame_len_ptr);
-unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx,
-			      unsigned int *frame_len_ptr);
+unsigned int __must_check can_get_echo_skb(struct net_device *dev,
+					   unsigned int idx,
+					   unsigned int *frame_len_ptr);
 void can_free_echo_skb(struct net_device *dev, unsigned int idx,
 		       unsigned int *frame_len_ptr);
 struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf);
diff --git a/include/linux/cc_platform.h b/include/linux/cc_platform.h
new file mode 100644
index 000000000000..efd8205282da
--- /dev/null
+++ b/include/linux/cc_platform.h
@@ -0,0 +1,99 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Confidential Computing Platform Capability checks
+ *
+ * Copyright (C) 2021 Advanced Micro Devices, Inc.
+ *
+ * Author: Tom Lendacky <thomas.lendacky@amd.com>
+ */
+
+#ifndef _LINUX_CC_PLATFORM_H
+#define _LINUX_CC_PLATFORM_H
+
+#include <linux/types.h>
+#include <linux/stddef.h>
+
+/**
+ * enum cc_attr - Confidential computing attributes
+ *
+ * These attributes represent confidential computing features that are
+ * currently active.
+ */
+enum cc_attr {
+	/**
+	 * @CC_ATTR_MEM_ENCRYPT: Memory encryption is active
+	 *
+	 * The platform/OS is running with active memory encryption. This
+	 * includes running either as a bare-metal system or a hypervisor
+	 * and actively using memory encryption or as a guest/virtual machine
+	 * and actively using memory encryption.
+	 *
+	 * Examples include SME, SEV and SEV-ES.
+	 */
+	CC_ATTR_MEM_ENCRYPT,
+
+	/**
+	 * @CC_ATTR_HOST_MEM_ENCRYPT: Host memory encryption is active
+	 *
+	 * The platform/OS is running as a bare-metal system or a hypervisor
+	 * and actively using memory encryption.
+	 *
+	 * Examples include SME.
+	 */
+	CC_ATTR_HOST_MEM_ENCRYPT,
+
+	/**
+	 * @CC_ATTR_GUEST_MEM_ENCRYPT: Guest memory encryption is active
+	 *
+	 * The platform/OS is running as a guest/virtual machine and actively
+	 * using memory encryption.
+	 *
+	 * Examples include SEV and SEV-ES.
+	 */
+	CC_ATTR_GUEST_MEM_ENCRYPT,
+
+	/**
+	 * @CC_ATTR_GUEST_STATE_ENCRYPT: Guest state encryption is active
+	 *
+	 * The platform/OS is running as a guest/virtual machine and actively
+	 * using memory encryption and register state encryption.
+	 *
+	 * Examples include SEV-ES.
+	 */
+	CC_ATTR_GUEST_STATE_ENCRYPT,
+
+	/**
+	 * @CC_ATTR_GUEST_UNROLL_STRING_IO: String I/O is implemented with
+	 *                                  IN/OUT instructions
+	 *
+	 * The platform/OS is running as a guest/virtual machine and uses
+	 * IN/OUT instructions in place of string I/O.
+	 *
+	 * Examples include TDX guest & SEV.
+	 */
+	CC_ATTR_GUEST_UNROLL_STRING_IO,
+};
+
+#ifdef CONFIG_ARCH_HAS_CC_PLATFORM
+
+/**
+ * cc_platform_has() - Checks if the specified cc_attr attribute is active
+ * @attr: Confidential computing attribute to check
+ *
+ * The cc_platform_has() function will return an indicator as to whether the
+ * specified Confidential Computing attribute is currently active.
+ *
+ * Context: Any context
+ * Return:
+ * * TRUE  - Specified Confidential Computing attribute is active
+ * * FALSE - Specified Confidential Computing attribute is not active
+ */
+bool cc_platform_has(enum cc_attr attr);
+
+#else	/* !CONFIG_ARCH_HAS_CC_PLATFORM */
+
+static inline bool cc_platform_has(enum cc_attr attr) { return false; }
+
+#endif	/* CONFIG_ARCH_HAS_CC_PLATFORM */
+
+#endif	/* _LINUX_CC_PLATFORM_H */
diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h
index c4fef00abdf3..0a89f111e00e 100644
--- a/include/linux/cdrom.h
+++ b/include/linux/cdrom.h
@@ -64,6 +64,7 @@ struct cdrom_device_info {
 	int for_data;
 	int (*exit)(struct cdrom_device_info *);
 	int mrw_mode_page;
+	__s64 last_media_change_ms;
 };
 
 struct cdrom_device_ops {
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index bc2699feddbe..86bf82dbd8b8 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -28,8 +28,8 @@
 
 
 #define CEPH_INO_ROOT   1
-#define CEPH_INO_CEPH   2       /* hidden .ceph dir */
-#define CEPH_INO_DOTDOT 3	/* used by ceph fuse for parent (..) */
+#define CEPH_INO_CEPH   2            /* hidden .ceph dir */
+#define CEPH_INO_GLOBAL_SNAPREALM  3 /* global dummy snaprealm */
 
 /* arbitrary limit on max # of monitors (cluster of 3 is typical) */
 #define CEPH_MAX_MON   31
@@ -302,6 +302,8 @@ enum {
 	CEPH_SESSION_REQUEST_FLUSH_MDLOG,
 };
 
+#define CEPH_SESSION_BLOCKLISTED	(1 << 0)  /* session blocklisted */
+
 extern const char *ceph_session_op_name(int op);
 
 struct ceph_mds_session_head {
@@ -326,6 +328,7 @@ enum {
 	CEPH_MDS_OP_LOOKUPPARENT = 0x00103,
 	CEPH_MDS_OP_LOOKUPINO  = 0x00104,
 	CEPH_MDS_OP_LOOKUPNAME = 0x00105,
+	CEPH_MDS_OP_GETVXATTR  = 0x00106,
 
 	CEPH_MDS_OP_SETXATTR   = 0x01105,
 	CEPH_MDS_OP_RMXATTR    = 0x01106,
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 409d8c29bc4f..00af2c98da75 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -35,6 +35,7 @@
 #define CEPH_OPT_TCP_NODELAY      (1<<4) /* TCP_NODELAY on TCP sockets */
 #define CEPH_OPT_NOMSGSIGN        (1<<5) /* don't sign msgs (msgr1) */
 #define CEPH_OPT_ABORT_ON_FULL    (1<<6) /* abort w/ ENOSPC when full */
+#define CEPH_OPT_RXBOUNCE         (1<<7) /* double-buffer read data */
 
 #define CEPH_OPT_DEFAULT   (CEPH_OPT_TCP_NODELAY)
 
@@ -283,6 +284,7 @@ DEFINE_RB_LOOKUP_FUNC(name, type, keyfld, nodefld)
 
 extern struct kmem_cache *ceph_inode_cachep;
 extern struct kmem_cache *ceph_cap_cachep;
+extern struct kmem_cache *ceph_cap_snap_cachep;
 extern struct kmem_cache *ceph_cap_flush_cachep;
 extern struct kmem_cache *ceph_dentry_cachep;
 extern struct kmem_cache *ceph_file_cachep;
@@ -295,13 +297,13 @@ extern bool libceph_compatible(void *data);
 
 extern const char *ceph_msg_type_name(int type);
 extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid);
-extern void *ceph_kvmalloc(size_t size, gfp_t flags);
+extern int ceph_parse_fsid(const char *str, struct ceph_fsid *fsid);
 
 struct fs_parameter;
 struct fc_log;
 struct ceph_options *ceph_alloc_options(void);
 int ceph_parse_mon_ips(const char *buf, size_t len, struct ceph_options *opt,
-		       struct fc_log *l);
+		       struct fc_log *l, char delim);
 int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt,
 		     struct fc_log *l);
 int ceph_print_client_options(struct seq_file *m, struct ceph_client *client,
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index 0e6e9ad3c3bf..e7f2fb2fc207 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -383,6 +383,10 @@ struct ceph_connection_v2_info {
 	struct ceph_gcm_nonce in_gcm_nonce;
 	struct ceph_gcm_nonce out_gcm_nonce;
 
+	struct page **in_enc_pages;
+	int in_enc_page_cnt;
+	int in_enc_resid;
+	int in_enc_i;
 	struct page **out_enc_pages;
 	int out_enc_page_cnt;
 	int out_enc_resid;
@@ -457,6 +461,7 @@ struct ceph_connection {
 	struct ceph_msg *out_msg;        /* sending message (== tail of
 					    out_sent) */
 
+	struct page *bounce_page;
 	u32 in_front_crc, in_middle_crc, in_data_crc;  /* calculated crc */
 
 	struct timespec64 last_keepalive_ack; /* keepalive2 ack stamp */
@@ -532,7 +537,7 @@ extern const char *ceph_pr_addr(const struct ceph_entity_addr *addr);
 
 extern int ceph_parse_ips(const char *c, const char *end,
 			  struct ceph_entity_addr *addr,
-			  int max_count, int *count);
+			  int max_count, int *count, char delim);
 
 extern int ceph_msgr_init(void);
 extern void ceph_msgr_exit(void);
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 83fa08a06507..cba8a6ffc329 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -287,6 +287,9 @@ struct ceph_osd_linger_request {
 	rados_watcherrcb_t errcb;
 	void *data;
 
+	struct ceph_pagelist *request_pl;
+	struct page **notify_id_pages;
+
 	struct page ***preply_pages;
 	size_t *preply_len;
 };
@@ -475,6 +478,14 @@ extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
 				       u64 expected_object_size,
 				       u64 expected_write_size,
 				       u32 flags);
+extern int osd_req_op_copy_from_init(struct ceph_osd_request *req,
+				     u64 src_snapid, u64 src_version,
+				     struct ceph_object_id *src_oid,
+				     struct ceph_object_locator *src_oloc,
+				     u32 src_fadvise_flags,
+				     u32 dst_fadvise_flags,
+				     u32 truncate_seq, u64 truncate_size,
+				     u8 copy_from_flags);
 
 extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
 					       struct ceph_snap_context *snapc,
@@ -515,17 +526,6 @@ int ceph_osdc_call(struct ceph_osd_client *osdc,
 		   struct page *req_page, size_t req_len,
 		   struct page **resp_pages, size_t *resp_len);
 
-int ceph_osdc_copy_from(struct ceph_osd_client *osdc,
-			u64 src_snapid, u64 src_version,
-			struct ceph_object_id *src_oid,
-			struct ceph_object_locator *src_oloc,
-			u32 src_fadvise_flags,
-			struct ceph_object_id *dst_oid,
-			struct ceph_object_locator *dst_oloc,
-			u32 dst_fadvise_flags,
-			u32 truncate_seq, u64 truncate_size,
-			u8 copy_from_flags);
-
 /* watch/notify */
 struct ceph_osd_linger_request *
 ceph_osdc_watch(struct ceph_osd_client *osdc,
diff --git a/include/linux/cfi.h b/include/linux/cfi.h
index 879744aaa6e0..c6dfc1ed0626 100644
--- a/include/linux/cfi.h
+++ b/include/linux/cfi.h
@@ -34,8 +34,17 @@ static inline void cfi_module_remove(struct module *mod, unsigned long base_addr
 
 #else /* !CONFIG_CFI_CLANG */
 
-#define __CFI_ADDRESSABLE(fn, __attr)
+#ifdef CONFIG_X86_KERNEL_IBT
+
+#define __CFI_ADDRESSABLE(fn, __attr) \
+	const void *__cfi_jt_ ## fn __visible __attr = (void *)&fn
+
+#endif /* CONFIG_X86_KERNEL_IBT */
 
 #endif /* CONFIG_CFI_CLANG */
 
+#ifndef __CFI_ADDRESSABLE
+#define __CFI_ADDRESSABLE(fn, __attr)
+#endif
+
 #endif /* _LINUX_CFI_H */
diff --git a/include/linux/cgroup-defs.h b/include/linux/cgroup-defs.h
index db2e147e069f..1bfcfb1af352 100644
--- a/include/linux/cgroup-defs.h
+++ b/include/linux/cgroup-defs.h
@@ -19,7 +19,7 @@
 #include <linux/percpu-rwsem.h>
 #include <linux/u64_stats_sync.h>
 #include <linux/workqueue.h>
-#include <linux/bpf-cgroup.h>
+#include <linux/bpf-cgroup-defs.h>
 #include <linux/psi_types.h>
 
 #ifdef CONFIG_CGROUPS
@@ -413,7 +413,7 @@ struct cgroup {
 	/*
 	 * The bitmask of subsystems enabled on the child cgroups.
 	 * ->subtree_control is the one configured through
-	 * "cgroup.subtree_control" while ->child_ss_mask is the effective
+	 * "cgroup.subtree_control" while ->subtree_ss_mask is the effective
 	 * one which may have more subsystems enabled.  Controller knobs
 	 * are made available iff it's enabled in ->subtree_control.
 	 */
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 75c151413fda..0d1ada8968d7 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -450,6 +450,7 @@ extern struct mutex cgroup_mutex;
 extern spinlock_t css_set_lock;
 #define task_css_set_check(task, __c)					\
 	rcu_dereference_check((task)->cgroups,				\
+		rcu_read_lock_sched_held() ||				\
 		lockdep_is_held(&cgroup_mutex) ||			\
 		lockdep_is_held(&css_set_lock) ||			\
 		((task)->flags & PF_EXITING) || (__c))
@@ -791,11 +792,9 @@ static inline void cgroup_account_cputime(struct task_struct *task,
 
 	cpuacct_charge(task, delta_exec);
 
-	rcu_read_lock();
 	cgrp = task_dfl_cgroup(task);
 	if (cgroup_parent(cgrp))
 		__cgroup_account_cputime(cgrp, delta_exec);
-	rcu_read_unlock();
 }
 
 static inline void cgroup_account_cputime_field(struct task_struct *task,
@@ -806,11 +805,9 @@ static inline void cgroup_account_cputime_field(struct task_struct *task,
 
 	cpuacct_account_field(task, index, delta_exec);
 
-	rcu_read_lock();
 	cgrp = task_dfl_cgroup(task);
 	if (cgroup_parent(cgrp))
 		__cgroup_account_cputime_field(cgrp, index, delta_exec);
-	rcu_read_unlock();
 }
 
 #else	/* CONFIG_CGROUPS */
diff --git a/include/linux/cgroup_api.h b/include/linux/cgroup_api.h
new file mode 100644
index 000000000000..d0cfe8025111
--- /dev/null
+++ b/include/linux/cgroup_api.h
@@ -0,0 +1 @@
+#include <linux/cgroup.h>
diff --git a/include/linux/cleancache.h b/include/linux/cleancache.h
deleted file mode 100644
index 5f5730c1d324..000000000000
--- a/include/linux/cleancache.h
+++ /dev/null
@@ -1,124 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_CLEANCACHE_H
-#define _LINUX_CLEANCACHE_H
-
-#include <linux/fs.h>
-#include <linux/exportfs.h>
-#include <linux/mm.h>
-
-#define CLEANCACHE_NO_POOL		-1
-#define CLEANCACHE_NO_BACKEND		-2
-#define CLEANCACHE_NO_BACKEND_SHARED	-3
-
-#define CLEANCACHE_KEY_MAX 6
-
-/*
- * cleancache requires every file with a page in cleancache to have a
- * unique key unless/until the file is removed/truncated.  For some
- * filesystems, the inode number is unique, but for "modern" filesystems
- * an exportable filehandle is required (see exportfs.h)
- */
-struct cleancache_filekey {
-	union {
-		ino_t ino;
-		__u32 fh[CLEANCACHE_KEY_MAX];
-		u32 key[CLEANCACHE_KEY_MAX];
-	} u;
-};
-
-struct cleancache_ops {
-	int (*init_fs)(size_t);
-	int (*init_shared_fs)(uuid_t *uuid, size_t);
-	int (*get_page)(int, struct cleancache_filekey,
-			pgoff_t, struct page *);
-	void (*put_page)(int, struct cleancache_filekey,
-			pgoff_t, struct page *);
-	void (*invalidate_page)(int, struct cleancache_filekey, pgoff_t);
-	void (*invalidate_inode)(int, struct cleancache_filekey);
-	void (*invalidate_fs)(int);
-};
-
-extern int cleancache_register_ops(const struct cleancache_ops *ops);
-extern void __cleancache_init_fs(struct super_block *);
-extern void __cleancache_init_shared_fs(struct super_block *);
-extern int  __cleancache_get_page(struct page *);
-extern void __cleancache_put_page(struct page *);
-extern void __cleancache_invalidate_page(struct address_space *, struct page *);
-extern void __cleancache_invalidate_inode(struct address_space *);
-extern void __cleancache_invalidate_fs(struct super_block *);
-
-#ifdef CONFIG_CLEANCACHE
-#define cleancache_enabled (1)
-static inline bool cleancache_fs_enabled_mapping(struct address_space *mapping)
-{
-	return mapping->host->i_sb->cleancache_poolid >= 0;
-}
-static inline bool cleancache_fs_enabled(struct page *page)
-{
-	return cleancache_fs_enabled_mapping(page->mapping);
-}
-#else
-#define cleancache_enabled (0)
-#define cleancache_fs_enabled(_page) (0)
-#define cleancache_fs_enabled_mapping(_page) (0)
-#endif
-
-/*
- * The shim layer provided by these inline functions allows the compiler
- * to reduce all cleancache hooks to nothingness if CONFIG_CLEANCACHE
- * is disabled, to a single global variable check if CONFIG_CLEANCACHE
- * is enabled but no cleancache "backend" has dynamically enabled it,
- * and, for the most frequent cleancache ops, to a single global variable
- * check plus a superblock element comparison if CONFIG_CLEANCACHE is enabled
- * and a cleancache backend has dynamically enabled cleancache, but the
- * filesystem referenced by that cleancache op has not enabled cleancache.
- * As a result, CONFIG_CLEANCACHE can be enabled by default with essentially
- * no measurable performance impact.
- */
-
-static inline void cleancache_init_fs(struct super_block *sb)
-{
-	if (cleancache_enabled)
-		__cleancache_init_fs(sb);
-}
-
-static inline void cleancache_init_shared_fs(struct super_block *sb)
-{
-	if (cleancache_enabled)
-		__cleancache_init_shared_fs(sb);
-}
-
-static inline int cleancache_get_page(struct page *page)
-{
-	if (cleancache_enabled && cleancache_fs_enabled(page))
-		return __cleancache_get_page(page);
-	return -1;
-}
-
-static inline void cleancache_put_page(struct page *page)
-{
-	if (cleancache_enabled && cleancache_fs_enabled(page))
-		__cleancache_put_page(page);
-}
-
-static inline void cleancache_invalidate_page(struct address_space *mapping,
-					struct page *page)
-{
-	/* careful... page->mapping is NULL sometimes when this is called */
-	if (cleancache_enabled && cleancache_fs_enabled_mapping(mapping))
-		__cleancache_invalidate_page(mapping, page);
-}
-
-static inline void cleancache_invalidate_inode(struct address_space *mapping)
-{
-	if (cleancache_enabled && cleancache_fs_enabled_mapping(mapping))
-		__cleancache_invalidate_inode(mapping);
-}
-
-static inline void cleancache_invalidate_fs(struct super_block *sb)
-{
-	if (cleancache_enabled)
-		__cleancache_invalidate_fs(sb);
-}
-
-#endif /* _LINUX_CLEANCACHE_H */
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index f59c875271a0..c10dc4c659e2 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -490,6 +490,13 @@ struct clk_hw *__clk_hw_register_gate(struct device *dev,
 		unsigned long flags,
 		void __iomem *reg, u8 bit_idx,
 		u8 clk_gate_flags, spinlock_t *lock);
+struct clk_hw *__devm_clk_hw_register_gate(struct device *dev,
+		struct device_node *np, const char *name,
+		const char *parent_name, const struct clk_hw *parent_hw,
+		const struct clk_parent_data *parent_data,
+		unsigned long flags,
+		void __iomem *reg, u8 bit_idx,
+		u8 clk_gate_flags, spinlock_t *lock);
 struct clk *clk_register_gate(struct device *dev, const char *name,
 		const char *parent_name, unsigned long flags,
 		void __iomem *reg, u8 bit_idx,
@@ -544,6 +551,22 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
 	__clk_hw_register_gate((dev), NULL, (name), NULL, NULL, (parent_data), \
 			       (flags), (reg), (bit_idx),		      \
 			       (clk_gate_flags), (lock))
+/**
+ * devm_clk_hw_register_gate - register a gate clock with the clock framework
+ * @dev: device that is registering this clock
+ * @name: name of this clock
+ * @parent_name: name of this clock's parent
+ * @flags: framework-specific flags for this clock
+ * @reg: register address to control gating of this clock
+ * @bit_idx: which bit in the register controls gating of this clock
+ * @clk_gate_flags: gate-specific flags for this clock
+ * @lock: shared register lock for this clock
+ */
+#define devm_clk_hw_register_gate(dev, name, parent_name, flags, reg, bit_idx,\
+				  clk_gate_flags, lock)			      \
+	__devm_clk_hw_register_gate((dev), NULL, (name), (parent_name), NULL, \
+			       NULL, (flags), (reg), (bit_idx),		      \
+			       (clk_gate_flags), (lock))
 void clk_unregister_gate(struct clk *clk);
 void clk_hw_unregister_gate(struct clk_hw *hw);
 int clk_gate_is_enabled(struct clk_hw *hw);
@@ -865,7 +888,7 @@ void clk_hw_unregister_divider(struct clk_hw *hw);
 struct clk_mux {
 	struct clk_hw	hw;
 	void __iomem	*reg;
-	u32		*table;
+	const u32	*table;
 	u32		mask;
 	u8		shift;
 	u8		flags;
@@ -890,18 +913,18 @@ struct clk_hw *__clk_hw_register_mux(struct device *dev, struct device_node *np,
 		const struct clk_hw **parent_hws,
 		const struct clk_parent_data *parent_data,
 		unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
-		u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+		u8 clk_mux_flags, const u32 *table, spinlock_t *lock);
 struct clk_hw *__devm_clk_hw_register_mux(struct device *dev, struct device_node *np,
 		const char *name, u8 num_parents,
 		const char * const *parent_names,
 		const struct clk_hw **parent_hws,
 		const struct clk_parent_data *parent_data,
 		unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
-		u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+		u8 clk_mux_flags, const u32 *table, spinlock_t *lock);
 struct clk *clk_register_mux_table(struct device *dev, const char *name,
 		const char * const *parent_names, u8 num_parents,
 		unsigned long flags, void __iomem *reg, u8 shift, u32 mask,
-		u8 clk_mux_flags, u32 *table, spinlock_t *lock);
+		u8 clk_mux_flags, const u32 *table, spinlock_t *lock);
 
 #define clk_register_mux(dev, name, parent_names, num_parents, flags, reg,    \
 			 shift, width, clk_mux_flags, lock)		      \
@@ -939,9 +962,9 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name,
 			      (shift), BIT((width)) - 1, (clk_mux_flags),     \
 			      NULL, (lock))
 
-int clk_mux_val_to_index(struct clk_hw *hw, u32 *table, unsigned int flags,
+int clk_mux_val_to_index(struct clk_hw *hw, const u32 *table, unsigned int flags,
 			 unsigned int val);
-unsigned int clk_mux_index_to_val(u32 *table, unsigned int flags, u8 index);
+unsigned int clk_mux_index_to_val(const u32 *table, unsigned int flags, u8 index);
 
 void clk_unregister_mux(struct clk *clk);
 void clk_hw_unregister_mux(struct clk_hw *hw);
@@ -980,6 +1003,9 @@ void clk_hw_unregister_fixed_factor(struct clk_hw *hw);
 struct clk_hw *devm_clk_hw_register_fixed_factor(struct device *dev,
 		const char *name, const char *parent_name, unsigned long flags,
 		unsigned int mult, unsigned int div);
+struct clk_hw *devm_clk_hw_register_fixed_factor_index(struct device *dev,
+		const char *name, unsigned int index, unsigned long flags,
+		unsigned int mult, unsigned int div);
 /**
  * struct clk_fractional_divider - adjustable fractional divider clock
  *
diff --git a/include/linux/clk.h b/include/linux/clk.h
index 266e8de3cb51..39faa54efe88 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -987,6 +987,17 @@ static inline void clk_bulk_disable_unprepare(int num_clks,
 }
 
 /**
+ * clk_drop_range - Reset any range set on that clock
+ * @clk: clock source
+ *
+ * Returns success (0) or negative errno.
+ */
+static inline int clk_drop_range(struct clk *clk)
+{
+	return clk_set_rate_range(clk, 0, ULONG_MAX);
+}
+
+/**
  * clk_get_optional - lookup and obtain a reference to an optional clock
  *		      producer.
  * @dev: device for clock "consumer"
diff --git a/include/linux/clk/at91_pmc.h b/include/linux/clk/at91_pmc.h
index ccb3f034bfa9..3484309b59bf 100644
--- a/include/linux/clk/at91_pmc.h
+++ b/include/linux/clk/at91_pmc.h
@@ -78,6 +78,10 @@
 #define		AT91_PMC_MAINRDY	(1	<< 16)		/* Main Clock Ready */
 
 #define	AT91_CKGR_PLLAR		0x28			/* PLL A Register */
+
+#define	AT91_PMC_RATIO		0x2c			/* Processor clock ratio register [SAMA7G5 only] */
+#define		AT91_PMC_RATIO_RATIO	(0xf)		/* CPU clock ratio. */
+
 #define	AT91_CKGR_PLLBR		0x2c			/* PLL B Register */
 #define		AT91_PMC_DIV		(0xff  <<  0)		/* Divider */
 #define		AT91_PMC_PLLCOUNT	(0x3f  <<  8)		/* PLL Counter */
diff --git a/include/linux/clk/sunxi-ng.h b/include/linux/clk/sunxi-ng.h
index 3cd14acde0a1..57c8ec44ab4e 100644
--- a/include/linux/clk/sunxi-ng.h
+++ b/include/linux/clk/sunxi-ng.h
@@ -6,22 +6,9 @@
 #ifndef _LINUX_CLK_SUNXI_NG_H_
 #define _LINUX_CLK_SUNXI_NG_H_
 
-#include <linux/errno.h>
-
-#ifdef CONFIG_SUNXI_CCU
 int sunxi_ccu_set_mmc_timing_mode(struct clk *clk, bool new_mode);
 int sunxi_ccu_get_mmc_timing_mode(struct clk *clk);
-#else
-static inline int sunxi_ccu_set_mmc_timing_mode(struct clk *clk,
-						bool new_mode)
-{
-	return -ENOTSUPP;
-}
 
-static inline int sunxi_ccu_get_mmc_timing_mode(struct clk *clk)
-{
-	return -ENOTSUPP;
-}
-#endif
+int sun6i_rtc_ccu_probe(struct device *dev, void __iomem *reg);
 
 #endif
diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h
index d128ad1570aa..3650e926e93f 100644
--- a/include/linux/clk/tegra.h
+++ b/include/linux/clk/tegra.h
@@ -42,6 +42,7 @@ struct tegra_cpu_car_ops {
 #endif
 };
 
+#ifdef CONFIG_ARCH_TEGRA
 extern struct tegra_cpu_car_ops *tegra_cpu_car_ops;
 
 static inline void tegra_wait_cpu_in_reset(u32 cpu)
@@ -83,8 +84,29 @@ static inline void tegra_disable_cpu_clock(u32 cpu)
 
 	tegra_cpu_car_ops->disable_clock(cpu);
 }
+#else
+static inline void tegra_wait_cpu_in_reset(u32 cpu)
+{
+}
 
-#ifdef CONFIG_PM_SLEEP
+static inline void tegra_put_cpu_in_reset(u32 cpu)
+{
+}
+
+static inline void tegra_cpu_out_of_reset(u32 cpu)
+{
+}
+
+static inline void tegra_enable_cpu_clock(u32 cpu)
+{
+}
+
+static inline void tegra_disable_cpu_clock(u32 cpu)
+{
+}
+#endif
+
+#if defined(CONFIG_ARCH_TEGRA) && defined(CONFIG_PM_SLEEP)
 static inline bool tegra_cpu_rail_off_ready(void)
 {
 	if (WARN_ON(!tegra_cpu_car_ops->rail_off_ready))
diff --git a/include/linux/cma.h b/include/linux/cma.h
index 53fd8c3cdbd0..a6f637342740 100644
--- a/include/linux/cma.h
+++ b/include/linux/cma.h
@@ -12,14 +12,18 @@
  */
 #ifdef CONFIG_CMA_AREAS
 #define MAX_CMA_AREAS	(1 + CONFIG_CMA_AREAS)
-
-#else
-#define MAX_CMA_AREAS	(0)
-
 #endif
 
 #define CMA_MAX_NAME 64
 
+/*
+ * TODO: once the buddy -- especially pageblock merging and alloc_contig_range()
+ * -- can deal with only some pageblocks of a higher-order page being
+ *  MIGRATE_CMA, we can use pageblock_nr_pages.
+ */
+#define CMA_MIN_ALIGNMENT_PAGES MAX_ORDER_NR_PAGES
+#define CMA_MIN_ALIGNMENT_BYTES (PAGE_SIZE * CMA_MIN_ALIGNMENT_PAGES)
+
 struct cma;
 
 extern unsigned long totalcma_pages;
@@ -46,7 +50,10 @@ extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
 					struct cma **res_cma);
 extern struct page *cma_alloc(struct cma *cma, unsigned long count, unsigned int align,
 			      bool no_warn);
+extern bool cma_pages_valid(struct cma *cma, const struct page *pages, unsigned long count);
 extern bool cma_release(struct cma *cma, const struct page *pages, unsigned long count);
 
 extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data);
+
+extern void cma_reserve_pages_on_error(struct cma *cma);
 #endif
diff --git a/include/linux/comedi/comedi_8254.h b/include/linux/comedi/comedi_8254.h
new file mode 100644
index 000000000000..d8264417e53c
--- /dev/null
+++ b/include/linux/comedi/comedi_8254.h
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_8254.h
+ * Generic 8254 timer/counter support
+ * Copyright (C) 2014 H Hartley Sweeten <hsweeten@visionengravers.com>
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_8254_H
+#define _COMEDI_8254_H
+
+#include <linux/types.h>
+
+struct comedi_device;
+struct comedi_insn;
+struct comedi_subdevice;
+
+/*
+ * Common oscillator base values in nanoseconds
+ */
+#define I8254_OSC_BASE_10MHZ	100
+#define I8254_OSC_BASE_5MHZ	200
+#define I8254_OSC_BASE_4MHZ	250
+#define I8254_OSC_BASE_2MHZ	500
+#define I8254_OSC_BASE_1MHZ	1000
+#define I8254_OSC_BASE_100KHZ	10000
+#define I8254_OSC_BASE_10KHZ	100000
+#define I8254_OSC_BASE_1KHZ	1000000
+
+/*
+ * I/O access size used to read/write registers
+ */
+#define I8254_IO8		1
+#define I8254_IO16		2
+#define I8254_IO32		4
+
+/*
+ * Register map for generic 8254 timer (I8254_IO8 with 0 regshift)
+ */
+#define I8254_COUNTER0_REG		0x00
+#define I8254_COUNTER1_REG		0x01
+#define I8254_COUNTER2_REG		0x02
+#define I8254_CTRL_REG			0x03
+#define I8254_CTRL_SEL_CTR(x)		((x) << 6)
+#define I8254_CTRL_READBACK(x)		(I8254_CTRL_SEL_CTR(3) | BIT(x))
+#define I8254_CTRL_READBACK_COUNT	I8254_CTRL_READBACK(4)
+#define I8254_CTRL_READBACK_STATUS	I8254_CTRL_READBACK(5)
+#define I8254_CTRL_READBACK_SEL_CTR(x)	(2 << (x))
+#define I8254_CTRL_RW(x)		(((x) & 0x3) << 4)
+#define I8254_CTRL_LATCH		I8254_CTRL_RW(0)
+#define I8254_CTRL_LSB_ONLY		I8254_CTRL_RW(1)
+#define I8254_CTRL_MSB_ONLY		I8254_CTRL_RW(2)
+#define I8254_CTRL_LSB_MSB		I8254_CTRL_RW(3)
+
+/* counter maps zero to 0x10000 */
+#define I8254_MAX_COUNT			0x10000
+
+/**
+ * struct comedi_8254 - private data used by this module
+ * @iobase:		PIO base address of the registers (in/out)
+ * @mmio:		MMIO base address of the registers (read/write)
+ * @iosize:		I/O size used to access the registers (b/w/l)
+ * @regshift:		register gap shift
+ * @osc_base:		cascaded oscillator speed in ns
+ * @divisor:		divisor for single counter
+ * @divisor1:		divisor loaded into first cascaded counter
+ * @divisor2:		divisor loaded into second cascaded counter
+ * #next_div:		next divisor for single counter
+ * @next_div1:		next divisor to use for first cascaded counter
+ * @next_div2:		next divisor to use for second cascaded counter
+ * @clock_src;		current clock source for each counter (driver specific)
+ * @gate_src;		current gate source  for each counter (driver specific)
+ * @busy:		flags used to indicate that a counter is "busy"
+ * @insn_config:	driver specific (*insn_config) callback
+ */
+struct comedi_8254 {
+	unsigned long iobase;
+	void __iomem *mmio;
+	unsigned int iosize;
+	unsigned int regshift;
+	unsigned int osc_base;
+	unsigned int divisor;
+	unsigned int divisor1;
+	unsigned int divisor2;
+	unsigned int next_div;
+	unsigned int next_div1;
+	unsigned int next_div2;
+	unsigned int clock_src[3];
+	unsigned int gate_src[3];
+	bool busy[3];
+
+	int (*insn_config)(struct comedi_device *dev,
+			   struct comedi_subdevice *s,
+			   struct comedi_insn *insn, unsigned int *data);
+};
+
+unsigned int comedi_8254_status(struct comedi_8254 *i8254,
+				unsigned int counter);
+unsigned int comedi_8254_read(struct comedi_8254 *i8254, unsigned int counter);
+void comedi_8254_write(struct comedi_8254 *i8254,
+		       unsigned int counter, unsigned int val);
+
+int comedi_8254_set_mode(struct comedi_8254 *i8254,
+			 unsigned int counter, unsigned int mode);
+int comedi_8254_load(struct comedi_8254 *i8254,
+		     unsigned int counter, unsigned int val, unsigned int mode);
+
+void comedi_8254_pacer_enable(struct comedi_8254 *i8254,
+			      unsigned int counter1, unsigned int counter2,
+			      bool enable);
+void comedi_8254_update_divisors(struct comedi_8254 *i8254);
+void comedi_8254_cascade_ns_to_timer(struct comedi_8254 *i8254,
+				     unsigned int *nanosec, unsigned int flags);
+void comedi_8254_ns_to_timer(struct comedi_8254 *i8254,
+			     unsigned int *nanosec, unsigned int flags);
+
+void comedi_8254_set_busy(struct comedi_8254 *i8254,
+			  unsigned int counter, bool busy);
+
+void comedi_8254_subdevice_init(struct comedi_subdevice *s,
+				struct comedi_8254 *i8254);
+
+struct comedi_8254 *comedi_8254_init(unsigned long iobase,
+				     unsigned int osc_base,
+				     unsigned int iosize,
+				     unsigned int regshift);
+struct comedi_8254 *comedi_8254_mm_init(void __iomem *mmio,
+					unsigned int osc_base,
+					unsigned int iosize,
+					unsigned int regshift);
+
+#endif	/* _COMEDI_8254_H */
diff --git a/include/linux/comedi/comedi_8255.h b/include/linux/comedi/comedi_8255.h
new file mode 100644
index 000000000000..b2a5bc6b3a49
--- /dev/null
+++ b/include/linux/comedi/comedi_8255.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_8255.h
+ * Generic 8255 digital I/O subdevice support
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1998 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_8255_H
+#define _COMEDI_8255_H
+
+#define I8255_SIZE		0x04
+
+#define I8255_DATA_A_REG	0x00
+#define I8255_DATA_B_REG	0x01
+#define I8255_DATA_C_REG	0x02
+#define I8255_CTRL_REG		0x03
+#define I8255_CTRL_C_LO_IO	BIT(0)
+#define I8255_CTRL_B_IO		BIT(1)
+#define I8255_CTRL_B_MODE	BIT(2)
+#define I8255_CTRL_C_HI_IO	BIT(3)
+#define I8255_CTRL_A_IO		BIT(4)
+#define I8255_CTRL_A_MODE(x)	((x) << 5)
+#define I8255_CTRL_CW		BIT(7)
+
+struct comedi_device;
+struct comedi_subdevice;
+
+int subdev_8255_init(struct comedi_device *dev, struct comedi_subdevice *s,
+		     int (*io)(struct comedi_device *dev, int dir, int port,
+			       int data, unsigned long regbase),
+		     unsigned long regbase);
+
+int subdev_8255_mm_init(struct comedi_device *dev, struct comedi_subdevice *s,
+			int (*io)(struct comedi_device *dev, int dir, int port,
+				  int data, unsigned long regbase),
+			unsigned long regbase);
+
+unsigned long subdev_8255_regbase(struct comedi_subdevice *s);
+
+#endif
diff --git a/include/linux/comedi/comedi_isadma.h b/include/linux/comedi/comedi_isadma.h
new file mode 100644
index 000000000000..9d2b12db7e6e
--- /dev/null
+++ b/include/linux/comedi/comedi_isadma.h
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * COMEDI ISA DMA support functions
+ * Copyright (c) 2014 H Hartley Sweeten <hsweeten@visionengravers.com>
+ */
+
+#ifndef _COMEDI_ISADMA_H
+#define _COMEDI_ISADMA_H
+
+#include <linux/types.h>
+
+struct comedi_device;
+struct device;
+
+/*
+ * These are used to avoid issues when <asm/dma.h> and the DMA_MODE_
+ * defines are not available.
+ */
+#define COMEDI_ISADMA_READ	0
+#define COMEDI_ISADMA_WRITE	1
+
+/**
+ * struct comedi_isadma_desc - cookie for ISA DMA
+ * @virt_addr:	virtual address of buffer
+ * @hw_addr:	hardware (bus) address of buffer
+ * @chan:	DMA channel
+ * @maxsize:	allocated size of buffer (in bytes)
+ * @size:	transfer size (in bytes)
+ * @mode:	DMA_MODE_READ or DMA_MODE_WRITE
+ */
+struct comedi_isadma_desc {
+	void *virt_addr;
+	dma_addr_t hw_addr;
+	unsigned int chan;
+	unsigned int maxsize;
+	unsigned int size;
+	char mode;
+};
+
+/**
+ * struct comedi_isadma - ISA DMA data
+ * @dev:	device to allocate non-coherent memory for
+ * @desc:	cookie for each DMA buffer
+ * @n_desc:	the number of cookies
+ * @cur_dma:	the current cookie in use
+ * @chan:	the first DMA channel requested
+ * @chan2:	the second DMA channel requested
+ */
+struct comedi_isadma {
+	struct device *dev;
+	struct comedi_isadma_desc *desc;
+	int n_desc;
+	int cur_dma;
+	unsigned int chan;
+	unsigned int chan2;
+};
+
+#if IS_ENABLED(CONFIG_ISA_DMA_API)
+
+void comedi_isadma_program(struct comedi_isadma_desc *desc);
+unsigned int comedi_isadma_disable(unsigned int dma_chan);
+unsigned int comedi_isadma_disable_on_sample(unsigned int dma_chan,
+					     unsigned int size);
+unsigned int comedi_isadma_poll(struct comedi_isadma *dma);
+void comedi_isadma_set_mode(struct comedi_isadma_desc *desc, char dma_dir);
+
+struct comedi_isadma *comedi_isadma_alloc(struct comedi_device *dev,
+					  int n_desc, unsigned int dma_chan1,
+					  unsigned int dma_chan2,
+					  unsigned int maxsize, char dma_dir);
+void comedi_isadma_free(struct comedi_isadma *dma);
+
+#else	/* !IS_ENABLED(CONFIG_ISA_DMA_API) */
+
+static inline void comedi_isadma_program(struct comedi_isadma_desc *desc)
+{
+}
+
+static inline unsigned int comedi_isadma_disable(unsigned int dma_chan)
+{
+	return 0;
+}
+
+static inline unsigned int
+comedi_isadma_disable_on_sample(unsigned int dma_chan, unsigned int size)
+{
+	return 0;
+}
+
+static inline unsigned int comedi_isadma_poll(struct comedi_isadma *dma)
+{
+	return 0;
+}
+
+static inline void comedi_isadma_set_mode(struct comedi_isadma_desc *desc,
+					  char dma_dir)
+{
+}
+
+static inline struct comedi_isadma *
+comedi_isadma_alloc(struct comedi_device *dev, int n_desc,
+		    unsigned int dma_chan1, unsigned int dma_chan2,
+		    unsigned int maxsize, char dma_dir)
+{
+	return NULL;
+}
+
+static inline void comedi_isadma_free(struct comedi_isadma *dma)
+{
+}
+
+#endif	/* !IS_ENABLED(CONFIG_ISA_DMA_API) */
+
+#endif	/* #ifndef _COMEDI_ISADMA_H */
diff --git a/include/linux/comedi/comedi_pci.h b/include/linux/comedi/comedi_pci.h
new file mode 100644
index 000000000000..2fb50663e3ed
--- /dev/null
+++ b/include/linux/comedi/comedi_pci.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_pci.h
+ * header file for Comedi PCI drivers
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_PCI_H
+#define _COMEDI_PCI_H
+
+#include <linux/pci.h>
+#include <linux/comedi/comedidev.h>
+
+/*
+ * PCI Vendor IDs not in <linux/pci_ids.h>
+ */
+#define PCI_VENDOR_ID_KOLTER		0x1001
+#define PCI_VENDOR_ID_ICP		0x104c
+#define PCI_VENDOR_ID_DT		0x1116
+#define PCI_VENDOR_ID_IOTECH		0x1616
+#define PCI_VENDOR_ID_CONTEC		0x1221
+#define PCI_VENDOR_ID_RTD		0x1435
+#define PCI_VENDOR_ID_HUMUSOFT		0x186c
+
+struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev);
+
+int comedi_pci_enable(struct comedi_device *dev);
+void comedi_pci_disable(struct comedi_device *dev);
+void comedi_pci_detach(struct comedi_device *dev);
+
+int comedi_pci_auto_config(struct pci_dev *pcidev, struct comedi_driver *driver,
+			   unsigned long context);
+void comedi_pci_auto_unconfig(struct pci_dev *pcidev);
+
+int comedi_pci_driver_register(struct comedi_driver *comedi_driver,
+			       struct pci_driver *pci_driver);
+void comedi_pci_driver_unregister(struct comedi_driver *comedi_driver,
+				  struct pci_driver *pci_driver);
+
+/**
+ * module_comedi_pci_driver() - Helper macro for registering a comedi PCI driver
+ * @__comedi_driver: comedi_driver struct
+ * @__pci_driver: pci_driver struct
+ *
+ * Helper macro for comedi PCI drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_pci_driver(__comedi_driver, __pci_driver) \
+	module_driver(__comedi_driver, comedi_pci_driver_register, \
+			comedi_pci_driver_unregister, &(__pci_driver))
+
+#endif /* _COMEDI_PCI_H */
diff --git a/include/linux/comedi/comedi_pcmcia.h b/include/linux/comedi/comedi_pcmcia.h
new file mode 100644
index 000000000000..a33dfb65b869
--- /dev/null
+++ b/include/linux/comedi/comedi_pcmcia.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedi_pcmcia.h
+ * header file for Comedi PCMCIA drivers
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_PCMCIA_H
+#define _COMEDI_PCMCIA_H
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
+#include <linux/comedi/comedidev.h>
+
+struct pcmcia_device *comedi_to_pcmcia_dev(struct comedi_device *dev);
+
+int comedi_pcmcia_enable(struct comedi_device *dev,
+			 int (*conf_check)(struct pcmcia_device *p_dev,
+					   void *priv_data));
+void comedi_pcmcia_disable(struct comedi_device *dev);
+
+int comedi_pcmcia_auto_config(struct pcmcia_device *link,
+			      struct comedi_driver *driver);
+void comedi_pcmcia_auto_unconfig(struct pcmcia_device *link);
+
+int comedi_pcmcia_driver_register(struct comedi_driver *comedi_driver,
+				  struct pcmcia_driver *pcmcia_driver);
+void comedi_pcmcia_driver_unregister(struct comedi_driver *comedi_driver,
+				     struct pcmcia_driver *pcmcia_driver);
+
+/**
+ * module_comedi_pcmcia_driver() - Helper macro for registering a comedi
+ * PCMCIA driver
+ * @__comedi_driver: comedi_driver struct
+ * @__pcmcia_driver: pcmcia_driver struct
+ *
+ * Helper macro for comedi PCMCIA drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_pcmcia_driver(__comedi_driver, __pcmcia_driver) \
+	module_driver(__comedi_driver, comedi_pcmcia_driver_register, \
+			comedi_pcmcia_driver_unregister, &(__pcmcia_driver))
+
+#endif /* _COMEDI_PCMCIA_H */
diff --git a/include/linux/comedi/comedi_usb.h b/include/linux/comedi/comedi_usb.h
new file mode 100644
index 000000000000..5d17dd425bd2
--- /dev/null
+++ b/include/linux/comedi/comedi_usb.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* comedi_usb.h
+ * header file for USB Comedi drivers
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDI_USB_H
+#define _COMEDI_USB_H
+
+#include <linux/usb.h>
+#include <linux/comedi/comedidev.h>
+
+struct usb_interface *comedi_to_usb_interface(struct comedi_device *dev);
+struct usb_device *comedi_to_usb_dev(struct comedi_device *dev);
+
+int comedi_usb_auto_config(struct usb_interface *intf,
+			   struct comedi_driver *driver, unsigned long context);
+void comedi_usb_auto_unconfig(struct usb_interface *intf);
+
+int comedi_usb_driver_register(struct comedi_driver *comedi_driver,
+			       struct usb_driver *usb_driver);
+void comedi_usb_driver_unregister(struct comedi_driver *comedi_driver,
+				  struct usb_driver *usb_driver);
+
+/**
+ * module_comedi_usb_driver() - Helper macro for registering a comedi USB driver
+ * @__comedi_driver: comedi_driver struct
+ * @__usb_driver: usb_driver struct
+ *
+ * Helper macro for comedi USB drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_usb_driver(__comedi_driver, __usb_driver) \
+	module_driver(__comedi_driver, comedi_usb_driver_register, \
+			comedi_usb_driver_unregister, &(__usb_driver))
+
+#endif /* _COMEDI_USB_H */
diff --git a/include/linux/comedi/comedidev.h b/include/linux/comedi/comedidev.h
new file mode 100644
index 000000000000..0a1150900ef3
--- /dev/null
+++ b/include/linux/comedi/comedidev.h
@@ -0,0 +1,1053 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedidev.h
+ * header file for kernel-only structures, variables, and constants
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _COMEDIDEV_H
+#define _COMEDIDEV_H
+
+#include <linux/dma-mapping.h>
+#include <linux/mutex.h>
+#include <linux/spinlock_types.h>
+#include <linux/rwsem.h>
+#include <linux/kref.h>
+#include <linux/comedi.h>
+
+#define COMEDI_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
+#define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION, \
+	COMEDI_MINORVERSION, COMEDI_MICROVERSION)
+#define COMEDI_RELEASE VERSION
+
+#define COMEDI_NUM_BOARD_MINORS 0x30
+
+/**
+ * struct comedi_subdevice - Working data for a COMEDI subdevice
+ * @device: COMEDI device to which this subdevice belongs.  (Initialized by
+ *	comedi_alloc_subdevices().)
+ * @index: Index of this subdevice within device's array of subdevices.
+ *	(Initialized by comedi_alloc_subdevices().)
+ * @type: Type of subdevice from &enum comedi_subdevice_type.  (Initialized by
+ *	the low-level driver.)
+ * @n_chan: Number of channels the subdevice supports.  (Initialized by the
+ *	low-level driver.)
+ * @subdev_flags: Various "SDF" flags indicating aspects of the subdevice to
+ *	the COMEDI core and user application.  (Initialized by the low-level
+ *	driver.)
+ * @len_chanlist: Maximum length of a channel list if the subdevice supports
+ *	asynchronous acquisition commands.  (Optionally initialized by the
+ *	low-level driver, or changed from 0 to 1 during post-configuration.)
+ * @private: Private data pointer which is either set by the low-level driver
+ *	itself, or by a call to comedi_alloc_spriv() which allocates storage.
+ *	In the latter case, the storage is automatically freed after the
+ *	low-level driver's "detach" handler is called for the device.
+ *	(Initialized by the low-level driver.)
+ * @async: Pointer to &struct comedi_async id the subdevice supports
+ *	asynchronous acquisition commands.  (Allocated and initialized during
+ *	post-configuration if needed.)
+ * @lock: Pointer to a file object that performed a %COMEDI_LOCK ioctl on the
+ *	subdevice.  (Initially NULL.)
+ * @busy: Pointer to a file object that is performing an asynchronous
+ *	acquisition command on the subdevice.  (Initially NULL.)
+ * @runflags: Internal flags for use by COMEDI core, mostly indicating whether
+ *	an asynchronous acquisition command is running.
+ * @spin_lock: Generic spin-lock for use by the COMEDI core and the low-level
+ *	driver.  (Initialized by comedi_alloc_subdevices().)
+ * @io_bits: Bit-mask indicating the channel directions for a DIO subdevice
+ *	with no more than 32 channels.  A '1' at a bit position indicates the
+ *	corresponding channel is configured as an output.  (Initialized by the
+ *	low-level driver for a DIO subdevice.  Forced to all-outputs during
+ *	post-configuration for a digital output subdevice.)
+ * @maxdata: If non-zero, this is the maximum raw data value of each channel.
+ *	If zero, the maximum data value is channel-specific.  (Initialized by
+ *	the low-level driver.)
+ * @maxdata_list: If the maximum data value is channel-specific, this points
+ *	to an array of maximum data values indexed by channel index.
+ *	(Initialized by the low-level driver.)
+ * @range_table: If non-NULL, this points to a COMEDI range table for the
+ *	subdevice.  If NULL, the range table is channel-specific.  (Initialized
+ *	by the low-level driver, will be set to an "invalid" range table during
+ *	post-configuration if @range_table and @range_table_list are both
+ *	NULL.)
+ * @range_table_list: If the COMEDI range table is channel-specific, this
+ *	points to an array of pointers to COMEDI range tables indexed by
+ *	channel number.  (Initialized by the low-level driver.)
+ * @chanlist: Not used.
+ * @insn_read: Optional pointer to a handler for the %INSN_READ instruction.
+ *	(Initialized by the low-level driver, or set to a default handler
+ *	during post-configuration.)
+ * @insn_write: Optional pointer to a handler for the %INSN_WRITE instruction.
+ *	(Initialized by the low-level driver, or set to a default handler
+ *	during post-configuration.)
+ * @insn_bits: Optional pointer to a handler for the %INSN_BITS instruction
+ *	for a digital input, digital output or digital input/output subdevice.
+ *	(Initialized by the low-level driver, or set to a default handler
+ *	during post-configuration.)
+ * @insn_config: Optional pointer to a handler for the %INSN_CONFIG
+ *	instruction.  (Initialized by the low-level driver, or set to a default
+ *	handler during post-configuration.)
+ * @do_cmd: If the subdevice supports asynchronous acquisition commands, this
+ *	points to a handler to set it up in hardware.  (Initialized by the
+ *	low-level driver.)
+ * @do_cmdtest: If the subdevice supports asynchronous acquisition commands,
+ *	this points to a handler used to check and possibly tweak a prospective
+ *	acquisition command without setting it up in hardware.  (Initialized by
+ *	the low-level driver.)
+ * @poll: If the subdevice supports asynchronous acquisition commands, this
+ *	is an optional pointer to a handler for the %COMEDI_POLL ioctl which
+ *	instructs the low-level driver to synchronize buffers.  (Initialized by
+ *	the low-level driver if needed.)
+ * @cancel: If the subdevice supports asynchronous acquisition commands, this
+ *	points to a handler used to terminate a running command.  (Initialized
+ *	by the low-level driver.)
+ * @buf_change: If the subdevice supports asynchronous acquisition commands,
+ *	this is an optional pointer to a handler that is called when the data
+ *	buffer for handling asynchronous commands is allocated or reallocated.
+ *	(Initialized by the low-level driver if needed.)
+ * @munge: If the subdevice supports asynchronous acquisition commands and
+ *	uses DMA to transfer data from the hardware to the acquisition buffer,
+ *	this points to a function used to "munge" the data values from the
+ *	hardware into the format expected by COMEDI.  (Initialized by the
+ *	low-level driver if needed.)
+ * @async_dma_dir: If the subdevice supports asynchronous acquisition commands
+ *	and uses DMA to transfer data from the hardware to the acquisition
+ *	buffer, this sets the DMA direction for the buffer. (initialized to
+ *	%DMA_NONE by comedi_alloc_subdevices() and changed by the low-level
+ *	driver if necessary.)
+ * @state: Handy bit-mask indicating the output states for a DIO or digital
+ *	output subdevice with no more than 32 channels. (Initialized by the
+ *	low-level driver.)
+ * @class_dev: If the subdevice supports asynchronous acquisition commands,
+ *	this points to a sysfs comediX_subdY device where X is the minor device
+ *	number of the COMEDI device and Y is the subdevice number.  The minor
+ *	device number for the sysfs device is allocated dynamically in the
+ *	range 48 to 255.  This is used to allow the COMEDI device to be opened
+ *	with a different default read or write subdevice.  (Allocated during
+ *	post-configuration if needed.)
+ * @minor: If @class_dev is set, this is its dynamically allocated minor
+ *	device number.  (Set during post-configuration if necessary.)
+ * @readback: Optional pointer to memory allocated by
+ *	comedi_alloc_subdev_readback() used to hold the values written to
+ *	analog output channels so they can be read back.  The storage is
+ *	automatically freed after the low-level driver's "detach" handler is
+ *	called for the device.  (Initialized by the low-level driver.)
+ *
+ * This is the main control structure for a COMEDI subdevice.  If the subdevice
+ * supports asynchronous acquisition commands, additional information is stored
+ * in the &struct comedi_async pointed to by @async.
+ *
+ * Most of the subdevice is initialized by the low-level driver's "attach" or
+ * "auto_attach" handlers but parts of it are initialized by
+ * comedi_alloc_subdevices(), and other parts are initialized during
+ * post-configuration on return from that handler.
+ *
+ * A low-level driver that sets @insn_bits for a digital input, digital output,
+ * or DIO subdevice may leave @insn_read and @insn_write uninitialized, in
+ * which case they will be set to a default handler during post-configuration
+ * that uses @insn_bits to emulate the %INSN_READ and %INSN_WRITE instructions.
+ */
+struct comedi_subdevice {
+	struct comedi_device *device;
+	int index;
+	int type;
+	int n_chan;
+	int subdev_flags;
+	int len_chanlist;	/* maximum length of channel/gain list */
+
+	void *private;
+
+	struct comedi_async *async;
+
+	void *lock;
+	void *busy;
+	unsigned int runflags;
+	spinlock_t spin_lock;	/* generic spin-lock for COMEDI and drivers */
+
+	unsigned int io_bits;
+
+	unsigned int maxdata;	/* if maxdata==0, use list */
+	const unsigned int *maxdata_list;	/* list is channel specific */
+
+	const struct comedi_lrange *range_table;
+	const struct comedi_lrange *const *range_table_list;
+
+	unsigned int *chanlist;	/* driver-owned chanlist (not used) */
+
+	int (*insn_read)(struct comedi_device *dev, struct comedi_subdevice *s,
+			 struct comedi_insn *insn, unsigned int *data);
+	int (*insn_write)(struct comedi_device *dev, struct comedi_subdevice *s,
+			  struct comedi_insn *insn, unsigned int *data);
+	int (*insn_bits)(struct comedi_device *dev, struct comedi_subdevice *s,
+			 struct comedi_insn *insn, unsigned int *data);
+	int (*insn_config)(struct comedi_device *dev,
+			   struct comedi_subdevice *s,
+			   struct comedi_insn *insn,
+			   unsigned int *data);
+
+	int (*do_cmd)(struct comedi_device *dev, struct comedi_subdevice *s);
+	int (*do_cmdtest)(struct comedi_device *dev,
+			  struct comedi_subdevice *s,
+			  struct comedi_cmd *cmd);
+	int (*poll)(struct comedi_device *dev, struct comedi_subdevice *s);
+	int (*cancel)(struct comedi_device *dev, struct comedi_subdevice *s);
+
+	/* called when the buffer changes */
+	int (*buf_change)(struct comedi_device *dev,
+			  struct comedi_subdevice *s);
+
+	void (*munge)(struct comedi_device *dev, struct comedi_subdevice *s,
+		      void *data, unsigned int num_bytes,
+		      unsigned int start_chan_index);
+	enum dma_data_direction async_dma_dir;
+
+	unsigned int state;
+
+	struct device *class_dev;
+	int minor;
+
+	unsigned int *readback;
+};
+
+/**
+ * struct comedi_buf_page - Describe a page of a COMEDI buffer
+ * @virt_addr: Kernel address of page.
+ * @dma_addr: DMA address of page if in DMA coherent memory.
+ */
+struct comedi_buf_page {
+	void *virt_addr;
+	dma_addr_t dma_addr;
+};
+
+/**
+ * struct comedi_buf_map - Describe pages in a COMEDI buffer
+ * @dma_hw_dev: Low-level hardware &struct device pointer copied from the
+ *	COMEDI device's hw_dev member.
+ * @page_list: Pointer to array of &struct comedi_buf_page, one for each
+ *	page in the buffer.
+ * @n_pages: Number of pages in the buffer.
+ * @dma_dir: DMA direction used to allocate pages of DMA coherent memory,
+ *	or %DMA_NONE if pages allocated from regular memory.
+ * @refcount: &struct kref reference counter used to free the buffer.
+ *
+ * A COMEDI data buffer is allocated as individual pages, either in
+ * conventional memory or DMA coherent memory, depending on the attached,
+ * low-level hardware device.  (The buffer pages also get mapped into the
+ * kernel's contiguous virtual address space pointed to by the 'prealloc_buf'
+ * member of &struct comedi_async.)
+ *
+ * The buffer is normally freed when the COMEDI device is detached from the
+ * low-level driver (which may happen due to device removal), but if it happens
+ * to be mmapped at the time, the pages cannot be freed until the buffer has
+ * been munmapped.  That is what the reference counter is for.  (The virtual
+ * address space pointed by 'prealloc_buf' is freed when the COMEDI device is
+ * detached.)
+ */
+struct comedi_buf_map {
+	struct device *dma_hw_dev;
+	struct comedi_buf_page *page_list;
+	unsigned int n_pages;
+	enum dma_data_direction dma_dir;
+	struct kref refcount;
+};
+
+/**
+ * struct comedi_async - Control data for asynchronous COMEDI commands
+ * @prealloc_buf: Kernel virtual address of allocated acquisition buffer.
+ * @prealloc_bufsz: Buffer size (in bytes).
+ * @buf_map: Map of buffer pages.
+ * @max_bufsize: Maximum allowed buffer size (in bytes).
+ * @buf_write_count: "Write completed" count (in bytes, modulo 2**32).
+ * @buf_write_alloc_count: "Allocated for writing" count (in bytes,
+ *	modulo 2**32).
+ * @buf_read_count: "Read completed" count (in bytes, modulo 2**32).
+ * @buf_read_alloc_count: "Allocated for reading" count (in bytes,
+ *	modulo 2**32).
+ * @buf_write_ptr: Buffer position for writer.
+ * @buf_read_ptr: Buffer position for reader.
+ * @cur_chan: Current position in chanlist for scan (for those drivers that
+ *	use it).
+ * @scans_done: The number of scans completed.
+ * @scan_progress: Amount received or sent for current scan (in bytes).
+ * @munge_chan: Current position in chanlist for "munging".
+ * @munge_count: "Munge" count (in bytes, modulo 2**32).
+ * @munge_ptr: Buffer position for "munging".
+ * @events: Bit-vector of events that have occurred.
+ * @cmd: Details of comedi command in progress.
+ * @wait_head: Task wait queue for file reader or writer.
+ * @cb_mask: Bit-vector of events that should wake waiting tasks.
+ * @inttrig: Software trigger function for command, or NULL.
+ *
+ * Note about the ..._count and ..._ptr members:
+ *
+ * Think of the _Count values being integers of unlimited size, indexing
+ * into a buffer of infinite length (though only an advancing portion
+ * of the buffer of fixed length prealloc_bufsz is accessible at any
+ * time).  Then:
+ *
+ *   Buf_Read_Count <= Buf_Read_Alloc_Count <= Munge_Count <=
+ *   Buf_Write_Count <= Buf_Write_Alloc_Count <=
+ *   (Buf_Read_Count + prealloc_bufsz)
+ *
+ * (Those aren't the actual members, apart from prealloc_bufsz.) When the
+ * buffer is reset, those _Count values start at 0 and only increase in value,
+ * maintaining the above inequalities until the next time the buffer is
+ * reset.  The buffer is divided into the following regions by the inequalities:
+ *
+ *   [0, Buf_Read_Count):
+ *     old region no longer accessible
+ *
+ *   [Buf_Read_Count, Buf_Read_Alloc_Count):
+ *     filled and munged region allocated for reading but not yet read
+ *
+ *   [Buf_Read_Alloc_Count, Munge_Count):
+ *     filled and munged region not yet allocated for reading
+ *
+ *   [Munge_Count, Buf_Write_Count):
+ *     filled region not yet munged
+ *
+ *   [Buf_Write_Count, Buf_Write_Alloc_Count):
+ *     unfilled region allocated for writing but not yet written
+ *
+ *   [Buf_Write_Alloc_Count, Buf_Read_Count + prealloc_bufsz):
+ *     unfilled region not yet allocated for writing
+ *
+ *   [Buf_Read_Count + prealloc_bufsz, infinity):
+ *     unfilled region not yet accessible
+ *
+ * Data needs to be written into the buffer before it can be read out,
+ * and may need to be converted (or "munged") between the two
+ * operations.  Extra unfilled buffer space may need to allocated for
+ * writing (advancing Buf_Write_Alloc_Count) before new data is written.
+ * After writing new data, the newly filled space needs to be released
+ * (advancing Buf_Write_Count).  This also results in the new data being
+ * "munged" (advancing Munge_Count).  Before data is read out of the
+ * buffer, extra space may need to be allocated for reading (advancing
+ * Buf_Read_Alloc_Count).  After the data has been read out, the space
+ * needs to be released (advancing Buf_Read_Count).
+ *
+ * The actual members, buf_read_count, buf_read_alloc_count,
+ * munge_count, buf_write_count, and buf_write_alloc_count take the
+ * value of the corresponding capitalized _Count values modulo 2^32
+ * (UINT_MAX+1).  Subtracting a "higher" _count value from a "lower"
+ * _count value gives the same answer as subtracting a "higher" _Count
+ * value from a lower _Count value because prealloc_bufsz < UINT_MAX+1.
+ * The modulo operation is done implicitly.
+ *
+ * The buf_read_ptr, munge_ptr, and buf_write_ptr members take the value
+ * of the corresponding capitalized _Count values modulo prealloc_bufsz.
+ * These correspond to byte indices in the physical buffer.  The modulo
+ * operation is done by subtracting prealloc_bufsz when the value
+ * exceeds prealloc_bufsz (assuming prealloc_bufsz plus the increment is
+ * less than or equal to UINT_MAX).
+ */
+struct comedi_async {
+	void *prealloc_buf;
+	unsigned int prealloc_bufsz;
+	struct comedi_buf_map *buf_map;
+	unsigned int max_bufsize;
+	unsigned int buf_write_count;
+	unsigned int buf_write_alloc_count;
+	unsigned int buf_read_count;
+	unsigned int buf_read_alloc_count;
+	unsigned int buf_write_ptr;
+	unsigned int buf_read_ptr;
+	unsigned int cur_chan;
+	unsigned int scans_done;
+	unsigned int scan_progress;
+	unsigned int munge_chan;
+	unsigned int munge_count;
+	unsigned int munge_ptr;
+	unsigned int events;
+	struct comedi_cmd cmd;
+	wait_queue_head_t wait_head;
+	unsigned int cb_mask;
+	int (*inttrig)(struct comedi_device *dev, struct comedi_subdevice *s,
+		       unsigned int x);
+};
+
+/**
+ * enum comedi_cb - &struct comedi_async callback "events"
+ * @COMEDI_CB_EOS:		end-of-scan
+ * @COMEDI_CB_EOA:		end-of-acquisition/output
+ * @COMEDI_CB_BLOCK:		data has arrived, wakes up read() / write()
+ * @COMEDI_CB_EOBUF:		DEPRECATED: end of buffer
+ * @COMEDI_CB_ERROR:		card error during acquisition
+ * @COMEDI_CB_OVERFLOW:		buffer overflow/underflow
+ * @COMEDI_CB_ERROR_MASK:	events that indicate an error has occurred
+ * @COMEDI_CB_CANCEL_MASK:	events that will cancel an async command
+ */
+enum comedi_cb {
+	COMEDI_CB_EOS		= BIT(0),
+	COMEDI_CB_EOA		= BIT(1),
+	COMEDI_CB_BLOCK		= BIT(2),
+	COMEDI_CB_EOBUF		= BIT(3),
+	COMEDI_CB_ERROR		= BIT(4),
+	COMEDI_CB_OVERFLOW	= BIT(5),
+	/* masks */
+	COMEDI_CB_ERROR_MASK	= (COMEDI_CB_ERROR | COMEDI_CB_OVERFLOW),
+	COMEDI_CB_CANCEL_MASK	= (COMEDI_CB_EOA | COMEDI_CB_ERROR_MASK)
+};
+
+/**
+ * struct comedi_driver - COMEDI driver registration
+ * @driver_name: Name of driver.
+ * @module: Owning module.
+ * @attach: The optional "attach" handler for manually configured COMEDI
+ *	devices.
+ * @detach: The "detach" handler for deconfiguring COMEDI devices.
+ * @auto_attach: The optional "auto_attach" handler for automatically
+ *	configured COMEDI devices.
+ * @num_names: Optional number of "board names" supported.
+ * @board_name: Optional pointer to a pointer to a board name.  The pointer
+ *	to a board name is embedded in an element of a driver-defined array
+ *	of static, read-only board type information.
+ * @offset: Optional size of each element of the driver-defined array of
+ *	static, read-only board type information, i.e. the offset between each
+ *	pointer to a board name.
+ *
+ * This is used with comedi_driver_register() and comedi_driver_unregister() to
+ * register and unregister a low-level COMEDI driver with the COMEDI core.
+ *
+ * If @num_names is non-zero, @board_name should be non-NULL, and @offset
+ * should be at least sizeof(*board_name).  These are used by the handler for
+ * the %COMEDI_DEVCONFIG ioctl to match a hardware device and its driver by
+ * board name.  If @num_names is zero, the %COMEDI_DEVCONFIG ioctl matches a
+ * hardware device and its driver by driver name.  This is only useful if the
+ * @attach handler is set.  If @num_names is non-zero, the driver's @attach
+ * handler will be called with the COMEDI device structure's board_ptr member
+ * pointing to the matched pointer to a board name within the driver's private
+ * array of static, read-only board type information.
+ *
+ * The @detach handler has two roles.  If a COMEDI device was successfully
+ * configured by the @attach or @auto_attach handler, it is called when the
+ * device is being deconfigured (by the %COMEDI_DEVCONFIG ioctl, or due to
+ * unloading of the driver, or due to device removal).  It is also called when
+ * the @attach or @auto_attach handler returns an error.  Therefore, the
+ * @attach or @auto_attach handlers can defer clean-up on error until the
+ * @detach handler is called.  If the @attach or @auto_attach handlers free
+ * any resources themselves, they must prevent the @detach handler from
+ * freeing the same resources.  The @detach handler must not assume that all
+ * resources requested by the @attach or @auto_attach handler were
+ * successfully allocated.
+ */
+struct comedi_driver {
+	/* private: */
+	struct comedi_driver *next;	/* Next in list of COMEDI drivers. */
+	/* public: */
+	const char *driver_name;
+	struct module *module;
+	int (*attach)(struct comedi_device *dev, struct comedi_devconfig *it);
+	void (*detach)(struct comedi_device *dev);
+	int (*auto_attach)(struct comedi_device *dev, unsigned long context);
+	unsigned int num_names;
+	const char *const *board_name;
+	int offset;
+};
+
+/**
+ * struct comedi_device - Working data for a COMEDI device
+ * @use_count: Number of open file objects.
+ * @driver: Low-level COMEDI driver attached to this COMEDI device.
+ * @pacer: Optional pointer to a dynamically allocated acquisition pacer
+ *	control.  It is freed automatically after the COMEDI device is
+ *	detached from the low-level driver.
+ * @private: Optional pointer to private data allocated by the low-level
+ *	driver.  It is freed automatically after the COMEDI device is
+ *	detached from the low-level driver.
+ * @class_dev: Sysfs comediX device.
+ * @minor: Minor device number of COMEDI char device (0-47).
+ * @detach_count: Counter incremented every time the COMEDI device is detached.
+ *	Used for checking a previous attachment is still valid.
+ * @hw_dev: Optional pointer to the low-level hardware &struct device.  It is
+ *	required for automatically configured COMEDI devices and optional for
+ *	COMEDI devices configured by the %COMEDI_DEVCONFIG ioctl, although
+ *	the bus-specific COMEDI functions only work if it is set correctly.
+ *	It is also passed to dma_alloc_coherent() for COMEDI subdevices that
+ *	have their 'async_dma_dir' member set to something other than
+ *	%DMA_NONE.
+ * @board_name: Pointer to a COMEDI board name or a COMEDI driver name.  When
+ *	the low-level driver's "attach" handler is called by the handler for
+ *	the %COMEDI_DEVCONFIG ioctl, it either points to a matched board name
+ *	string if the 'num_names' member of the &struct comedi_driver is
+ *	non-zero, otherwise it points to the low-level driver name string.
+ *	When the low-lever driver's "auto_attach" handler is called for an
+ *	automatically configured COMEDI device, it points to the low-level
+ *	driver name string.  The low-level driver is free to change it in its
+ *	"attach" or "auto_attach" handler if it wishes.
+ * @board_ptr: Optional pointer to private, read-only board type information in
+ *	the low-level driver.  If the 'num_names' member of the &struct
+ *	comedi_driver is non-zero, the handler for the %COMEDI_DEVCONFIG ioctl
+ *	will point it to a pointer to a matched board name string within the
+ *	driver's private array of static, read-only board type information when
+ *	calling the driver's "attach" handler.  The low-level driver is free to
+ *	change it.
+ * @attached: Flag indicating that the COMEDI device is attached to a low-level
+ *	driver.
+ * @ioenabled: Flag used to indicate that a PCI device has been enabled and
+ *	its regions requested.
+ * @spinlock: Generic spin-lock for use by the low-level driver.
+ * @mutex: Generic mutex for use by the COMEDI core module.
+ * @attach_lock: &struct rw_semaphore used to guard against the COMEDI device
+ *	being detached while an operation is in progress.  The down_write()
+ *	operation is only allowed while @mutex is held and is used when
+ *	changing @attached and @detach_count and calling the low-level driver's
+ *	"detach" handler.  The down_read() operation is generally used without
+ *	holding @mutex.
+ * @refcount: &struct kref reference counter for freeing COMEDI device.
+ * @n_subdevices: Number of COMEDI subdevices allocated by the low-level
+ *	driver for this device.
+ * @subdevices: Dynamically allocated array of COMEDI subdevices.
+ * @mmio: Optional pointer to a remapped MMIO region set by the low-level
+ *	driver.
+ * @iobase: Optional base of an I/O port region requested by the low-level
+ *	driver.
+ * @iolen: Length of I/O port region requested at @iobase.
+ * @irq: Optional IRQ number requested by the low-level driver.
+ * @read_subdev: Optional pointer to a default COMEDI subdevice operated on by
+ *	the read() file operation.  Set by the low-level driver.
+ * @write_subdev: Optional pointer to a default COMEDI subdevice operated on by
+ *	the write() file operation.  Set by the low-level driver.
+ * @async_queue: Storage for fasync_helper().
+ * @open: Optional pointer to a function set by the low-level driver to be
+ *	called when @use_count changes from 0 to 1.
+ * @close: Optional pointer to a function set by the low-level driver to be
+ *	called when @use_count changed from 1 to 0.
+ * @insn_device_config: Optional pointer to a handler for all sub-instructions
+ *	except %INSN_DEVICE_CONFIG_GET_ROUTES of the %INSN_DEVICE_CONFIG
+ *	instruction.  If this is not initialized by the low-level driver, a
+ *	default handler will be set during post-configuration.
+ * @get_valid_routes: Optional pointer to a handler for the
+ *	%INSN_DEVICE_CONFIG_GET_ROUTES sub-instruction of the
+ *	%INSN_DEVICE_CONFIG instruction set.  If this is not initialized by the
+ *	low-level driver, a default handler that copies zero routes back to the
+ *	user will be used.
+ *
+ * This is the main control data structure for a COMEDI device (as far as the
+ * COMEDI core is concerned).  There are two groups of COMEDI devices -
+ * "legacy" devices that are configured by the handler for the
+ * %COMEDI_DEVCONFIG ioctl, and automatically configured devices resulting
+ * from a call to comedi_auto_config() as a result of a bus driver probe in
+ * a low-level COMEDI driver.  The "legacy" COMEDI devices are allocated
+ * during module initialization if the "comedi_num_legacy_minors" module
+ * parameter is non-zero and use minor device numbers from 0 to
+ * comedi_num_legacy_minors minus one.  The automatically configured COMEDI
+ * devices are allocated on demand and use minor device numbers from
+ * comedi_num_legacy_minors to 47.
+ */
+struct comedi_device {
+	int use_count;
+	struct comedi_driver *driver;
+	struct comedi_8254 *pacer;
+	void *private;
+
+	struct device *class_dev;
+	int minor;
+	unsigned int detach_count;
+	struct device *hw_dev;
+
+	const char *board_name;
+	const void *board_ptr;
+	unsigned int attached:1;
+	unsigned int ioenabled:1;
+	spinlock_t spinlock;	/* generic spin-lock for low-level driver */
+	struct mutex mutex;	/* generic mutex for COMEDI core */
+	struct rw_semaphore attach_lock;
+	struct kref refcount;
+
+	int n_subdevices;
+	struct comedi_subdevice *subdevices;
+
+	/* dumb */
+	void __iomem *mmio;
+	unsigned long iobase;
+	unsigned long iolen;
+	unsigned int irq;
+
+	struct comedi_subdevice *read_subdev;
+	struct comedi_subdevice *write_subdev;
+
+	struct fasync_struct *async_queue;
+
+	int (*open)(struct comedi_device *dev);
+	void (*close)(struct comedi_device *dev);
+	int (*insn_device_config)(struct comedi_device *dev,
+				  struct comedi_insn *insn, unsigned int *data);
+	unsigned int (*get_valid_routes)(struct comedi_device *dev,
+					 unsigned int n_pairs,
+					 unsigned int *pair_data);
+};
+
+/*
+ * function prototypes
+ */
+
+void comedi_event(struct comedi_device *dev, struct comedi_subdevice *s);
+
+struct comedi_device *comedi_dev_get_from_minor(unsigned int minor);
+int comedi_dev_put(struct comedi_device *dev);
+
+bool comedi_is_subdevice_running(struct comedi_subdevice *s);
+
+void *comedi_alloc_spriv(struct comedi_subdevice *s, size_t size);
+void comedi_set_spriv_auto_free(struct comedi_subdevice *s);
+
+int comedi_check_chanlist(struct comedi_subdevice *s,
+			  int n,
+			  unsigned int *chanlist);
+
+/* range stuff */
+
+#define RANGE(a, b)		{(a) * 1e6, (b) * 1e6, 0}
+#define RANGE_ext(a, b)		{(a) * 1e6, (b) * 1e6, RF_EXTERNAL}
+#define RANGE_mA(a, b)		{(a) * 1e6, (b) * 1e6, UNIT_mA}
+#define RANGE_unitless(a, b)	{(a) * 1e6, (b) * 1e6, 0}
+#define BIP_RANGE(a)		{-(a) * 1e6, (a) * 1e6, 0}
+#define UNI_RANGE(a)		{0, (a) * 1e6, 0}
+
+extern const struct comedi_lrange range_bipolar10;
+extern const struct comedi_lrange range_bipolar5;
+extern const struct comedi_lrange range_bipolar2_5;
+extern const struct comedi_lrange range_unipolar10;
+extern const struct comedi_lrange range_unipolar5;
+extern const struct comedi_lrange range_unipolar2_5;
+extern const struct comedi_lrange range_0_20mA;
+extern const struct comedi_lrange range_4_20mA;
+extern const struct comedi_lrange range_0_32mA;
+extern const struct comedi_lrange range_unknown;
+
+#define range_digital		range_unipolar5
+
+/**
+ * struct comedi_lrange - Describes a COMEDI range table
+ * @length: Number of entries in the range table.
+ * @range: Array of &struct comedi_krange, one for each range.
+ *
+ * Each element of @range[] describes the minimum and maximum physical range
+ * and the type of units.  Typically, the type of unit is %UNIT_volt
+ * (i.e. volts) and the minimum and maximum are in millionths of a volt.
+ * There may also be a flag that indicates the minimum and maximum are merely
+ * scale factors for an unknown, external reference.
+ */
+struct comedi_lrange {
+	int length;
+	struct comedi_krange range[];
+};
+
+/**
+ * comedi_range_is_bipolar() - Test if subdevice range is bipolar
+ * @s: COMEDI subdevice.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is bipolar by checking whether its minimum value
+ * is negative.
+ *
+ * Assumes @range is valid.  Does not work for subdevices using a
+ * channel-specific range table list.
+ *
+ * Return:
+ *	%true if the range is bipolar.
+ *	%false if the range is unipolar.
+ */
+static inline bool comedi_range_is_bipolar(struct comedi_subdevice *s,
+					   unsigned int range)
+{
+	return s->range_table->range[range].min < 0;
+}
+
+/**
+ * comedi_range_is_unipolar() - Test if subdevice range is unipolar
+ * @s: COMEDI subdevice.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is unipolar by checking whether its minimum value
+ * is at least 0.
+ *
+ * Assumes @range is valid.  Does not work for subdevices using a
+ * channel-specific range table list.
+ *
+ * Return:
+ *	%true if the range is unipolar.
+ *	%false if the range is bipolar.
+ */
+static inline bool comedi_range_is_unipolar(struct comedi_subdevice *s,
+					    unsigned int range)
+{
+	return s->range_table->range[range].min >= 0;
+}
+
+/**
+ * comedi_range_is_external() - Test if subdevice range is external
+ * @s: COMEDI subdevice.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is externally reference by checking whether its
+ * %RF_EXTERNAL flag is set.
+ *
+ * Assumes @range is valid.  Does not work for subdevices using a
+ * channel-specific range table list.
+ *
+ * Return:
+ *	%true if the range is external.
+ *	%false if the range is internal.
+ */
+static inline bool comedi_range_is_external(struct comedi_subdevice *s,
+					    unsigned int range)
+{
+	return !!(s->range_table->range[range].flags & RF_EXTERNAL);
+}
+
+/**
+ * comedi_chan_range_is_bipolar() - Test if channel-specific range is bipolar
+ * @s: COMEDI subdevice.
+ * @chan: The channel number.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is bipolar by checking whether its minimum value
+ * is negative.
+ *
+ * Assumes @chan and @range are valid.  Only works for subdevices with a
+ * channel-specific range table list.
+ *
+ * Return:
+ *	%true if the range is bipolar.
+ *	%false if the range is unipolar.
+ */
+static inline bool comedi_chan_range_is_bipolar(struct comedi_subdevice *s,
+						unsigned int chan,
+						unsigned int range)
+{
+	return s->range_table_list[chan]->range[range].min < 0;
+}
+
+/**
+ * comedi_chan_range_is_unipolar() - Test if channel-specific range is unipolar
+ * @s: COMEDI subdevice.
+ * @chan: The channel number.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is unipolar by checking whether its minimum value
+ * is at least 0.
+ *
+ * Assumes @chan and @range are valid.  Only works for subdevices with a
+ * channel-specific range table list.
+ *
+ * Return:
+ *	%true if the range is unipolar.
+ *	%false if the range is bipolar.
+ */
+static inline bool comedi_chan_range_is_unipolar(struct comedi_subdevice *s,
+						 unsigned int chan,
+						 unsigned int range)
+{
+	return s->range_table_list[chan]->range[range].min >= 0;
+}
+
+/**
+ * comedi_chan_range_is_external() - Test if channel-specific range is external
+ * @s: COMEDI subdevice.
+ * @chan: The channel number.
+ * @range: Index of range within a range table.
+ *
+ * Tests whether a range is externally reference by checking whether its
+ * %RF_EXTERNAL flag is set.
+ *
+ * Assumes @chan and @range are valid.  Only works for subdevices with a
+ * channel-specific range table list.
+ *
+ * Return:
+ *	%true if the range is bipolar.
+ *	%false if the range is unipolar.
+ */
+static inline bool comedi_chan_range_is_external(struct comedi_subdevice *s,
+						 unsigned int chan,
+						 unsigned int range)
+{
+	return !!(s->range_table_list[chan]->range[range].flags & RF_EXTERNAL);
+}
+
+/**
+ * comedi_offset_munge() - Convert between offset binary and 2's complement
+ * @s: COMEDI subdevice.
+ * @val: Value to be converted.
+ *
+ * Toggles the highest bit of a sample value to toggle between offset binary
+ * and 2's complement.  Assumes that @s->maxdata is a power of 2 minus 1.
+ *
+ * Return: The converted value.
+ */
+static inline unsigned int comedi_offset_munge(struct comedi_subdevice *s,
+					       unsigned int val)
+{
+	return val ^ s->maxdata ^ (s->maxdata >> 1);
+}
+
+/**
+ * comedi_bytes_per_sample() - Determine subdevice sample size
+ * @s: COMEDI subdevice.
+ *
+ * The sample size will be 4 (sizeof int) or 2 (sizeof short) depending on
+ * whether the %SDF_LSAMPL subdevice flag is set or not.
+ *
+ * Return: The subdevice sample size.
+ */
+static inline unsigned int comedi_bytes_per_sample(struct comedi_subdevice *s)
+{
+	return s->subdev_flags & SDF_LSAMPL ? sizeof(int) : sizeof(short);
+}
+
+/**
+ * comedi_sample_shift() - Determine log2 of subdevice sample size
+ * @s: COMEDI subdevice.
+ *
+ * The sample size will be 4 (sizeof int) or 2 (sizeof short) depending on
+ * whether the %SDF_LSAMPL subdevice flag is set or not.  The log2 of the
+ * sample size will be 2 or 1 and can be used as the right operand of a
+ * bit-shift operator to multiply or divide something by the sample size.
+ *
+ * Return: log2 of the subdevice sample size.
+ */
+static inline unsigned int comedi_sample_shift(struct comedi_subdevice *s)
+{
+	return s->subdev_flags & SDF_LSAMPL ? 2 : 1;
+}
+
+/**
+ * comedi_bytes_to_samples() - Convert a number of bytes to a number of samples
+ * @s: COMEDI subdevice.
+ * @nbytes: Number of bytes
+ *
+ * Return: The number of bytes divided by the subdevice sample size.
+ */
+static inline unsigned int comedi_bytes_to_samples(struct comedi_subdevice *s,
+						   unsigned int nbytes)
+{
+	return nbytes >> comedi_sample_shift(s);
+}
+
+/**
+ * comedi_samples_to_bytes() - Convert a number of samples to a number of bytes
+ * @s: COMEDI subdevice.
+ * @nsamples: Number of samples.
+ *
+ * Return: The number of samples multiplied by the subdevice sample size.
+ * (Does not check for arithmetic overflow.)
+ */
+static inline unsigned int comedi_samples_to_bytes(struct comedi_subdevice *s,
+						   unsigned int nsamples)
+{
+	return nsamples << comedi_sample_shift(s);
+}
+
+/**
+ * comedi_check_trigger_src() - Trivially validate a comedi_cmd trigger source
+ * @src: Pointer to the trigger source to validate.
+ * @flags: Bitmask of valid %TRIG_* for the trigger.
+ *
+ * This is used in "step 1" of the do_cmdtest functions of comedi drivers
+ * to validate the comedi_cmd triggers. The mask of the @src against the
+ * @flags allows the userspace comedilib to pass all the comedi_cmd
+ * triggers as %TRIG_ANY and get back a bitmask of the valid trigger sources.
+ *
+ * Return:
+ *	0 if trigger sources in *@src are all supported.
+ *	-EINVAL if any trigger source in *@src is unsupported.
+ */
+static inline int comedi_check_trigger_src(unsigned int *src,
+					   unsigned int flags)
+{
+	unsigned int orig_src = *src;
+
+	*src = orig_src & flags;
+	if (*src == TRIG_INVALID || *src != orig_src)
+		return -EINVAL;
+	return 0;
+}
+
+/**
+ * comedi_check_trigger_is_unique() - Make sure a trigger source is unique
+ * @src: The trigger source to check.
+ *
+ * Return:
+ *	0 if no more than one trigger source is set.
+ *	-EINVAL if more than one trigger source is set.
+ */
+static inline int comedi_check_trigger_is_unique(unsigned int src)
+{
+	/* this test is true if more than one _src bit is set */
+	if ((src & (src - 1)) != 0)
+		return -EINVAL;
+	return 0;
+}
+
+/**
+ * comedi_check_trigger_arg_is() - Trivially validate a trigger argument
+ * @arg: Pointer to the trigger arg to validate.
+ * @val: The value the argument should be.
+ *
+ * Forces *@arg to be @val.
+ *
+ * Return:
+ *	0 if *@arg was already @val.
+ *	-EINVAL if *@arg differed from @val.
+ */
+static inline int comedi_check_trigger_arg_is(unsigned int *arg,
+					      unsigned int val)
+{
+	if (*arg != val) {
+		*arg = val;
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/**
+ * comedi_check_trigger_arg_min() - Trivially validate a trigger argument min
+ * @arg: Pointer to the trigger arg to validate.
+ * @val: The minimum value the argument should be.
+ *
+ * Forces *@arg to be at least @val, setting it to @val if necessary.
+ *
+ * Return:
+ *	0 if *@arg was already at least @val.
+ *	-EINVAL if *@arg was less than @val.
+ */
+static inline int comedi_check_trigger_arg_min(unsigned int *arg,
+					       unsigned int val)
+{
+	if (*arg < val) {
+		*arg = val;
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/**
+ * comedi_check_trigger_arg_max() - Trivially validate a trigger argument max
+ * @arg: Pointer to the trigger arg to validate.
+ * @val: The maximum value the argument should be.
+ *
+ * Forces *@arg to be no more than @val, setting it to @val if necessary.
+ *
+ * Return:
+ *	0 if*@arg was already no more than @val.
+ *	-EINVAL if *@arg was greater than @val.
+ */
+static inline int comedi_check_trigger_arg_max(unsigned int *arg,
+					       unsigned int val)
+{
+	if (*arg > val) {
+		*arg = val;
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/*
+ * Must set dev->hw_dev if you wish to dma directly into comedi's buffer.
+ * Also useful for retrieving a previously configured hardware device of
+ * known bus type.  Set automatically for auto-configured devices.
+ * Automatically set to NULL when detaching hardware device.
+ */
+int comedi_set_hw_dev(struct comedi_device *dev, struct device *hw_dev);
+
+/**
+ * comedi_buf_n_bytes_ready - Determine amount of unread data in buffer
+ * @s: COMEDI subdevice.
+ *
+ * Determines the number of bytes of unread data in the asynchronous
+ * acquisition data buffer for a subdevice.  The data in question might not
+ * have been fully "munged" yet.
+ *
+ * Returns: The amount of unread data in bytes.
+ */
+static inline unsigned int comedi_buf_n_bytes_ready(struct comedi_subdevice *s)
+{
+	return s->async->buf_write_count - s->async->buf_read_count;
+}
+
+unsigned int comedi_buf_write_alloc(struct comedi_subdevice *s, unsigned int n);
+unsigned int comedi_buf_write_free(struct comedi_subdevice *s, unsigned int n);
+
+unsigned int comedi_buf_read_n_available(struct comedi_subdevice *s);
+unsigned int comedi_buf_read_alloc(struct comedi_subdevice *s, unsigned int n);
+unsigned int comedi_buf_read_free(struct comedi_subdevice *s, unsigned int n);
+
+unsigned int comedi_buf_write_samples(struct comedi_subdevice *s,
+				      const void *data, unsigned int nsamples);
+unsigned int comedi_buf_read_samples(struct comedi_subdevice *s,
+				     void *data, unsigned int nsamples);
+
+/* drivers.c - general comedi driver functions */
+
+#define COMEDI_TIMEOUT_MS	1000
+
+int comedi_timeout(struct comedi_device *dev, struct comedi_subdevice *s,
+		   struct comedi_insn *insn,
+		   int (*cb)(struct comedi_device *dev,
+			     struct comedi_subdevice *s,
+			     struct comedi_insn *insn, unsigned long context),
+		   unsigned long context);
+
+unsigned int comedi_handle_events(struct comedi_device *dev,
+				  struct comedi_subdevice *s);
+
+int comedi_dio_insn_config(struct comedi_device *dev,
+			   struct comedi_subdevice *s,
+			   struct comedi_insn *insn, unsigned int *data,
+			   unsigned int mask);
+unsigned int comedi_dio_update_state(struct comedi_subdevice *s,
+				     unsigned int *data);
+unsigned int comedi_bytes_per_scan_cmd(struct comedi_subdevice *s,
+				       struct comedi_cmd *cmd);
+unsigned int comedi_bytes_per_scan(struct comedi_subdevice *s);
+unsigned int comedi_nscans_left(struct comedi_subdevice *s,
+				unsigned int nscans);
+unsigned int comedi_nsamples_left(struct comedi_subdevice *s,
+				  unsigned int nsamples);
+void comedi_inc_scan_progress(struct comedi_subdevice *s,
+			      unsigned int num_bytes);
+
+void *comedi_alloc_devpriv(struct comedi_device *dev, size_t size);
+int comedi_alloc_subdevices(struct comedi_device *dev, int num_subdevices);
+int comedi_alloc_subdev_readback(struct comedi_subdevice *s);
+
+int comedi_readback_insn_read(struct comedi_device *dev,
+			      struct comedi_subdevice *s,
+			      struct comedi_insn *insn, unsigned int *data);
+
+int comedi_load_firmware(struct comedi_device *dev, struct device *hw_dev,
+			 const char *name,
+			 int (*cb)(struct comedi_device *dev,
+				   const u8 *data, size_t size,
+				   unsigned long context),
+			 unsigned long context);
+
+int __comedi_request_region(struct comedi_device *dev,
+			    unsigned long start, unsigned long len);
+int comedi_request_region(struct comedi_device *dev,
+			  unsigned long start, unsigned long len);
+void comedi_legacy_detach(struct comedi_device *dev);
+
+int comedi_auto_config(struct device *hardware_device,
+		       struct comedi_driver *driver, unsigned long context);
+void comedi_auto_unconfig(struct device *hardware_device);
+
+int comedi_driver_register(struct comedi_driver *driver);
+void comedi_driver_unregister(struct comedi_driver *driver);
+
+/**
+ * module_comedi_driver() - Helper macro for registering a comedi driver
+ * @__comedi_driver: comedi_driver struct
+ *
+ * Helper macro for comedi drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only use
+ * this macro once, and calling it replaces module_init() and module_exit().
+ */
+#define module_comedi_driver(__comedi_driver) \
+	module_driver(__comedi_driver, comedi_driver_register, \
+			comedi_driver_unregister)
+
+#endif /* _COMEDIDEV_H */
diff --git a/include/linux/comedi/comedilib.h b/include/linux/comedi/comedilib.h
new file mode 100644
index 000000000000..0223c9cd9215
--- /dev/null
+++ b/include/linux/comedi/comedilib.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * comedilib.h
+ * Header file for kcomedilib
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
+ */
+
+#ifndef _LINUX_COMEDILIB_H
+#define _LINUX_COMEDILIB_H
+
+struct comedi_device *comedi_open(const char *path);
+int comedi_close(struct comedi_device *dev);
+int comedi_dio_get_config(struct comedi_device *dev, unsigned int subdev,
+			  unsigned int chan, unsigned int *io);
+int comedi_dio_config(struct comedi_device *dev, unsigned int subdev,
+		      unsigned int chan, unsigned int io);
+int comedi_dio_bitfield2(struct comedi_device *dev, unsigned int subdev,
+			 unsigned int mask, unsigned int *bits,
+			 unsigned int base_channel);
+int comedi_find_subdevice_by_type(struct comedi_device *dev, int type,
+				  unsigned int subd);
+int comedi_get_n_channels(struct comedi_device *dev, unsigned int subdevice);
+
+#endif
diff --git a/include/linux/compiler-clang.h b/include/linux/compiler-clang.h
index 3c4de9b6c6e3..babb1347148c 100644
--- a/include/linux/compiler-clang.h
+++ b/include/linux/compiler-clang.h
@@ -68,3 +68,28 @@
 
 #define __nocfi		__attribute__((__no_sanitize__("cfi")))
 #define __cficanonical	__attribute__((__cfi_canonical_jump_table__))
+
+/*
+ * Turn individual warnings and errors on and off locally, depending
+ * on version.
+ */
+#define __diag_clang(version, severity, s) \
+	__diag_clang_ ## version(__diag_clang_ ## severity s)
+
+/* Severity used in pragma directives */
+#define __diag_clang_ignore	ignored
+#define __diag_clang_warn	warning
+#define __diag_clang_error	error
+
+#define __diag_str1(s)		#s
+#define __diag_str(s)		__diag_str1(s)
+#define __diag(s)		_Pragma(__diag_str(clang diagnostic s))
+
+#if CONFIG_CLANG_VERSION >= 110000
+#define __diag_clang_11(s)	__diag(s)
+#else
+#define __diag_clang_11(s)
+#endif
+
+#define __diag_ignore_all(option, comment) \
+	__diag_clang(11, ignore, option)
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index bd2b881c6b63..52299c957c98 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -41,8 +41,6 @@
 
 #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
 
-#define __compiletime_object_size(obj) __builtin_object_size(obj, 0)
-
 #if defined(LATENT_ENTROPY_PLUGIN) && !defined(__CHECKER__)
 #define __latent_entropy __attribute__((latent_entropy))
 #endif
@@ -99,6 +97,10 @@
 #define KASAN_ABI_VERSION 4
 #endif
 
+#ifdef CONFIG_SHADOW_CALL_STACK
+#define __noscs __attribute__((__no_sanitize__("shadow-call-stack")))
+#endif
+
 #if __has_attribute(__no_sanitize_address__)
 #define __no_sanitize_address __attribute__((no_sanitize_address))
 #else
@@ -124,6 +126,14 @@
 #endif
 
 /*
+ * Treat __SANITIZE_HWADDRESS__ the same as __SANITIZE_ADDRESS__ in the kernel,
+ * matching the defines used by Clang.
+ */
+#ifdef __SANITIZE_HWADDRESS__
+#define __SANITIZE_ADDRESS__
+#endif
+
+/*
  * Turn individual warnings and errors on and off locally, depending
  * on version.
  */
@@ -144,3 +154,14 @@
 #else
 #define __diag_GCC_8(s)
 #endif
+
+#define __diag_ignore_all(option, comment) \
+	__diag_GCC(8, ignore, option)
+
+/*
+ * Prior to 9.1, -Wno-alloc-size-larger-than (and therefore the "alloc_size"
+ * attribute) do not work, and must be disabled.
+ */
+#if GCC_VERSION < 90100
+#undef __alloc_size__
+#endif
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 3d5af56337bd..219aa5ddbc73 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -117,40 +117,22 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
  */
 #define __stringify_label(n) #n
 
-#define __annotate_reachable(c) ({					\
-	asm volatile(__stringify_label(c) ":\n\t"			\
-		     ".pushsection .discard.reachable\n\t"		\
-		     ".long " __stringify_label(c) "b - .\n\t"		\
-		     ".popsection\n\t");				\
-})
-#define annotate_reachable() __annotate_reachable(__COUNTER__)
-
 #define __annotate_unreachable(c) ({					\
 	asm volatile(__stringify_label(c) ":\n\t"			\
 		     ".pushsection .discard.unreachable\n\t"		\
 		     ".long " __stringify_label(c) "b - .\n\t"		\
-		     ".popsection\n\t");				\
+		     ".popsection\n\t" : : "i" (c));			\
 })
 #define annotate_unreachable() __annotate_unreachable(__COUNTER__)
 
-#define ASM_UNREACHABLE							\
-	"999:\n\t"							\
-	".pushsection .discard.unreachable\n\t"				\
-	".long 999b - .\n\t"						\
-	".popsection\n\t"
-
 /* Annotate a C jump table to allow objtool to follow the code flow */
 #define __annotate_jump_table __section(".rodata..c_jump_table")
 
 #else
-#define annotate_reachable()
 #define annotate_unreachable()
 #define __annotate_jump_table
 #endif
 
-#ifndef ASM_UNREACHABLE
-# define ASM_UNREACHABLE
-#endif
 #ifndef unreachable
 # define unreachable() do {		\
 	annotate_unreachable();		\
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h
index e6ec63403965..445e80517cab 100644
--- a/include/linux/compiler_attributes.h
+++ b/include/linux/compiler_attributes.h
@@ -34,6 +34,15 @@
 #define __aligned_largest               __attribute__((__aligned__))
 
 /*
+ * Note: do not use this directly. Instead, use __alloc_size() since it is conditionally
+ * available and includes other attributes.
+ *
+ *   gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-alloc_005fsize-function-attribute
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#alloc-size
+ */
+#define __alloc_size__(x, ...)		__attribute__((__alloc_size__(x, ## __VA_ARGS__)))
+
+/*
  * Note: users of __always_inline currently do not write "inline" themselves,
  * which seems to be required by gcc to apply the attribute according
  * to its docs (and also "warning: always_inline function might not be
@@ -92,6 +101,19 @@
 #endif
 
 /*
+ * Optional: not supported by gcc
+ * Optional: only supported since clang >= 14.0
+ * Optional: not supported by icc
+ *
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#diagnose_as_builtin
+ */
+#if __has_attribute(__diagnose_as_builtin__)
+# define __diagnose_as(builtin...)	__attribute__((__diagnose_as_builtin__(builtin)))
+#else
+# define __diagnose_as(builtin...)
+#endif
+
+/*
  * Don't. Just don't. See commit 771c035372a0 ("deprecate the '__deprecated'
  * attribute warnings entirely and for good") for more information.
  *
@@ -104,7 +126,6 @@
 #define __deprecated
 
 /*
- * Optional: only supported since gcc >= 5.1
  * Optional: not supported by clang
  * Optional: not supported by icc
  *
@@ -153,6 +174,7 @@
 
 /*
  *   gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-malloc-function-attribute
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#malloc
  */
 #define __malloc                        __attribute__((__malloc__))
 
@@ -249,12 +271,38 @@
 #define __noreturn                      __attribute__((__noreturn__))
 
 /*
+ * Optional: not supported by gcc.
+ * Optional: not supported by icc.
+ *
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#overloadable
+ */
+#if __has_attribute(__overloadable__)
+# define __overloadable			__attribute__((__overloadable__))
+#else
+# define __overloadable
+#endif
+
+/*
  *   gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html#index-packed-type-attribute
  * clang: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-packed-variable-attribute
  */
 #define __packed                        __attribute__((__packed__))
 
 /*
+ * Note: the "type" argument should match any __builtin_object_size(p, type) usage.
+ *
+ * Optional: not supported by gcc.
+ * Optional: not supported by icc.
+ *
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#pass-object-size-pass-dynamic-object-size
+ */
+#if __has_attribute(__pass_object_size__)
+# define __pass_object_size(type)	__attribute__((__pass_object_size__(type)))
+#else
+# define __pass_object_size(type)
+#endif
+
+/*
  *   gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-pure-function-attribute
  */
 #define __pure                          __attribute__((__pure__))
@@ -300,6 +348,24 @@
 #endif
 
 /*
+ * Optional: only supported since clang >= 14.0
+ *
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#disable-sanitizer-instrumentation
+ *
+ * disable_sanitizer_instrumentation is not always similar to
+ * no_sanitize((<sanitizer-name>)): the latter may still let specific sanitizers
+ * insert code into functions to prevent false positives. Unlike that,
+ * disable_sanitizer_instrumentation prevents all kinds of instrumentation to
+ * functions with the attribute.
+ */
+#if __has_attribute(disable_sanitizer_instrumentation)
+# define __disable_sanitizer_instrumentation \
+	 __attribute__((disable_sanitizer_instrumentation))
+#else
+# define __disable_sanitizer_instrumentation
+#endif
+
+/*
  *   gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-weak-function-attribute
  *   gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-weak-variable-attribute
  */
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index b6ff83a714ca..1c2c33ae1b37 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -4,6 +4,14 @@
 
 #ifndef __ASSEMBLY__
 
+#if defined(CONFIG_DEBUG_INFO_BTF) && defined(CONFIG_PAHOLE_HAS_BTF_TAG) && \
+	__has_attribute(btf_type_tag)
+# define BTF_TYPE_TAG(value) __attribute__((btf_type_tag(#value)))
+#else
+# define BTF_TYPE_TAG(value) /* nothing */
+#endif
+
+/* sparse defines __CHECKER__; see Documentation/dev-tools/sparse.rst */
 #ifdef __CHECKER__
 /* address spaces */
 # define __kernel	__attribute__((address_space(0)))
@@ -32,10 +40,10 @@ static inline void __chk_io_ptr(const volatile void __iomem *ptr) { }
 # ifdef STRUCTLEAK_PLUGIN
 #  define __user	__attribute__((user))
 # else
-#  define __user
+#  define __user	BTF_TYPE_TAG(user)
 # endif
 # define __iomem
-# define __percpu
+# define __percpu	BTF_TYPE_TAG(percpu)
 # define __rcu
 # define __chk_user_ptr(x)	(void)0
 # define __chk_io_ptr(x)	(void)0
@@ -137,8 +145,6 @@ struct ftrace_likely_data {
  */
 #define __naked			__attribute__((__naked__)) notrace
 
-#define __compiler_offsetof(a, b)	__builtin_offsetof(a, b)
-
 /*
  * Prefer gnu_inline, so that extern inline functions do not emit an
  * externally visible function. This makes extern inline behave as per gnu89
@@ -198,9 +204,20 @@ struct ftrace_likely_data {
 # define __no_kasan_or_inline __always_inline
 #endif
 
-#define __no_kcsan __no_sanitize_thread
 #ifdef __SANITIZE_THREAD__
+/*
+ * Clang still emits instrumentation for __tsan_func_{entry,exit}() and builtin
+ * atomics even with __no_sanitize_thread (to avoid false positives in userspace
+ * ThreadSanitizer). The kernel's requirements are stricter and we really do not
+ * want any instrumentation with __no_kcsan.
+ *
+ * Therefore we add __disable_sanitizer_instrumentation where available to
+ * disable all instrumentation. See Kconfig.kcsan where this is mandatory.
+ */
+# define __no_kcsan __no_sanitize_thread __disable_sanitizer_instrumentation
 # define __no_sanitize_or_inline __no_kcsan notrace __maybe_unused
+#else
+# define __no_kcsan
 #endif
 
 #ifndef __no_sanitize_or_inline
@@ -250,6 +267,18 @@ struct ftrace_likely_data {
 # define __cficanonical
 #endif
 
+/*
+ * Any place that could be marked with the "alloc_size" attribute is also
+ * a place to be marked with the "malloc" attribute. Do this as part of the
+ * __alloc_size macro to avoid redundant attributes and to avoid missing a
+ * __malloc marking.
+ */
+#ifdef __alloc_size__
+# define __alloc_size(x, ...)	__alloc_size__(x, ## __VA_ARGS__) __malloc
+#else
+# define __alloc_size(x, ...)	__malloc
+#endif
+
 #ifndef asm_volatile_goto
 #define asm_volatile_goto(x...) asm goto(x)
 #endif
@@ -290,15 +319,16 @@ struct ftrace_likely_data {
 	(sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \
 	 sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long))
 
-/* Compile time object size, -1 for unknown */
-#ifndef __compiletime_object_size
-# define __compiletime_object_size(obj) -1
-#endif
-
 #ifdef __OPTIMIZE__
 # define __compiletime_assert(condition, msg, prefix, suffix)		\
 	do {								\
-		extern void prefix ## suffix(void) __compiletime_error(msg); \
+		/*							\
+		 * __noreturn is needed to give the compiler enough	\
+		 * information to avoid certain possibly-uninitialized	\
+		 * warnings (regardless of the build failing).		\
+		 */							\
+		__noreturn extern void prefix ## suffix(void)		\
+			__compiletime_error(msg);			\
 		if (!(condition))					\
 			prefix ## suffix();				\
 	} while (0)
@@ -344,4 +374,8 @@ struct ftrace_likely_data {
 #define __diag_error(compiler, version, option, comment) \
 	__diag_ ## compiler(version, error, option)
 
+#ifndef __diag_ignore_all
+#define __diag_ignore_all(option, comment)
+#endif
+
 #endif /* __LINUX_COMPILER_TYPES_H */
diff --git a/include/linux/component.h b/include/linux/component.h
index 16de18f473d7..df4aa75c9e7c 100644
--- a/include/linux/component.h
+++ b/include/linux/component.h
@@ -38,10 +38,10 @@ int component_add_typed(struct device *dev, const struct component_ops *ops,
 	int subcomponent);
 void component_del(struct device *, const struct component_ops *);
 
-int component_bind_all(struct device *master, void *master_data);
-void component_unbind_all(struct device *master, void *master_data);
+int component_bind_all(struct device *parent, void *data);
+void component_unbind_all(struct device *parent, void *data);
 
-struct master;
+struct aggregate_device;
 
 /**
  * struct component_master_ops - callback for the aggregate driver
@@ -82,6 +82,12 @@ struct component_master_ops {
 	void (*unbind)(struct device *master);
 };
 
+/* A set helper functions for component compare/release */
+int component_compare_of(struct device *dev, void *data);
+void component_release_of(struct device *dev, void *data);
+int component_compare_dev(struct device *dev, void *data);
+int component_compare_dev_name(struct device *dev, void *data);
+
 void component_master_del(struct device *,
 	const struct component_master_ops *);
 
@@ -89,22 +95,22 @@ struct component_match;
 
 int component_master_add_with_match(struct device *,
 	const struct component_master_ops *, struct component_match *);
-void component_match_add_release(struct device *master,
+void component_match_add_release(struct device *parent,
 	struct component_match **matchptr,
 	void (*release)(struct device *, void *),
 	int (*compare)(struct device *, void *), void *compare_data);
-void component_match_add_typed(struct device *master,
+void component_match_add_typed(struct device *parent,
 	struct component_match **matchptr,
 	int (*compare_typed)(struct device *, int, void *), void *compare_data);
 
 /**
  * component_match_add - add a component match entry
- * @master: device with the aggregate driver
+ * @parent: device with the aggregate driver
  * @matchptr: pointer to the list of component matches
  * @compare: compare function to match against all components
  * @compare_data: opaque pointer passed to the @compare function
  *
- * Adds a new component match to the list stored in @matchptr, which the @master
+ * Adds a new component match to the list stored in @matchptr, which the @parent
  * aggregate driver needs to function. The list of component matches pointed to
  * by @matchptr must be initialized to NULL before adding the first match. This
  * only matches against components added with component_add().
@@ -114,11 +120,11 @@ void component_match_add_typed(struct device *master,
  *
  * See also component_match_add_release() and component_match_add_typed().
  */
-static inline void component_match_add(struct device *master,
+static inline void component_match_add(struct device *parent,
 	struct component_match **matchptr,
 	int (*compare)(struct device *, void *), void *compare_data)
 {
-	component_match_add_release(master, matchptr, NULL, compare,
+	component_match_add_release(parent, matchptr, NULL, compare,
 				    compare_data);
 }
 
diff --git a/include/linux/console.h b/include/linux/console.h
index 20874db50bc8..7cd758a4f44e 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -149,6 +149,8 @@ struct console {
 	short	flags;
 	short	index;
 	int	cflag;
+	uint	ispeed;
+	uint	ospeed;
 	void	*data;
 	struct	 console *next;
 };
@@ -217,12 +219,6 @@ extern atomic_t ignore_console_lock_warning;
 #define VESA_HSYNC_SUSPEND      2
 #define VESA_POWERDOWN          3
 
-#ifdef CONFIG_VGA_CONSOLE
-extern bool vgacon_text_force(void);
-#else
-static inline bool vgacon_text_force(void) { return false; }
-#endif
-
 extern void console_init(void);
 
 /* For deferred console takeover */
diff --git a/include/linux/container_of.h b/include/linux/container_of.h
new file mode 100644
index 000000000000..2f4944b791b8
--- /dev/null
+++ b/include/linux/container_of.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_CONTAINER_OF_H
+#define _LINUX_CONTAINER_OF_H
+
+#include <linux/build_bug.h>
+#include <linux/err.h>
+
+#define typeof_member(T, m)	typeof(((T*)0)->m)
+
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ *
+ */
+#define container_of(ptr, type, member) ({				\
+	void *__mptr = (void *)(ptr);					\
+	static_assert(__same_type(*(ptr), ((type *)0)->member) ||	\
+		      __same_type(*(ptr), void),			\
+		      "pointer type mismatch in container_of()");	\
+	((type *)(__mptr - offsetof(type, member))); })
+
+/**
+ * container_of_safe - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ *
+ * If IS_ERR_OR_NULL(ptr), ptr is returned unchanged.
+ */
+#define container_of_safe(ptr, type, member) ({				\
+	void *__mptr = (void *)(ptr);					\
+	static_assert(__same_type(*(ptr), ((type *)0)->member) ||	\
+		      __same_type(*(ptr), void),			\
+		      "pointer type mismatch in container_of_safe()");	\
+	IS_ERR_OR_NULL(__mptr) ? ERR_CAST(__mptr) :			\
+		((type *)(__mptr - offsetof(type, member))); })
+
+#endif	/* _LINUX_CONTAINER_OF_H */
diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h
index 4d7fced3a39f..7a14807c9d1a 100644
--- a/include/linux/context_tracking.h
+++ b/include/linux/context_tracking.h
@@ -105,7 +105,7 @@ static inline void user_exit_irqoff(void) { }
 static inline enum ctx_state exception_enter(void) { return 0; }
 static inline void exception_exit(enum ctx_state prev_ctx) { }
 static inline enum ctx_state ct_state(void) { return CONTEXT_DISABLED; }
-static inline bool context_tracking_guest_enter(void) { return false; }
+static __always_inline bool context_tracking_guest_enter(void) { return false; }
 static inline void context_tracking_guest_exit(void) { }
 
 #endif /* !CONFIG_CONTEXT_TRACKING */
diff --git a/include/linux/coredump.h b/include/linux/coredump.h
index 78fcd776b185..08a1d3e7e46d 100644
--- a/include/linux/coredump.h
+++ b/include/linux/coredump.h
@@ -12,29 +12,43 @@ struct core_vma_metadata {
 	unsigned long start, end;
 	unsigned long flags;
 	unsigned long dump_size;
+	unsigned long pgoff;
+	struct file   *file;
 };
 
-extern int core_uses_pid;
-extern char core_pattern[];
-extern unsigned int core_pipe_limit;
+struct coredump_params {
+	const kernel_siginfo_t *siginfo;
+	struct pt_regs *regs;
+	struct file *file;
+	unsigned long limit;
+	unsigned long mm_flags;
+	loff_t written;
+	loff_t pos;
+	loff_t to_skip;
+	int vma_count;
+	size_t vma_data_size;
+	struct core_vma_metadata *vma_meta;
+};
 
 /*
  * These are the only things you should do on a core-file: use only these
  * functions to write out all the necessary info.
  */
-struct coredump_params;
 extern void dump_skip_to(struct coredump_params *cprm, unsigned long to);
 extern void dump_skip(struct coredump_params *cprm, size_t nr);
 extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr);
 extern int dump_align(struct coredump_params *cprm, int align);
 int dump_user_range(struct coredump_params *cprm, unsigned long start,
 		    unsigned long len);
-int dump_vma_snapshot(struct coredump_params *cprm, int *vma_count,
-		      struct core_vma_metadata **vma_meta,
-		      size_t *vma_data_size_ptr);
 extern void do_coredump(const kernel_siginfo_t *siginfo);
 #else
 static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
 #endif
 
+#if defined(CONFIG_COREDUMP) && defined(CONFIG_SYSCTL)
+extern void validate_coredump_safety(void);
+#else
+static inline void validate_coredump_safety(void) {}
+#endif
+
 #endif /* _LINUX_COREDUMP_H */
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index 93a2922b7653..9f445f09fcfe 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -36,7 +36,6 @@
 extern struct bus_type coresight_bustype;
 
 enum coresight_dev_type {
-	CORESIGHT_DEV_TYPE_NONE,
 	CORESIGHT_DEV_TYPE_SINK,
 	CORESIGHT_DEV_TYPE_LINK,
 	CORESIGHT_DEV_TYPE_LINKSINK,
@@ -46,7 +45,6 @@ enum coresight_dev_type {
 };
 
 enum coresight_dev_subtype_sink {
-	CORESIGHT_DEV_SUBTYPE_SINK_NONE,
 	CORESIGHT_DEV_SUBTYPE_SINK_PORT,
 	CORESIGHT_DEV_SUBTYPE_SINK_BUFFER,
 	CORESIGHT_DEV_SUBTYPE_SINK_SYSMEM,
@@ -54,21 +52,18 @@ enum coresight_dev_subtype_sink {
 };
 
 enum coresight_dev_subtype_link {
-	CORESIGHT_DEV_SUBTYPE_LINK_NONE,
 	CORESIGHT_DEV_SUBTYPE_LINK_MERG,
 	CORESIGHT_DEV_SUBTYPE_LINK_SPLIT,
 	CORESIGHT_DEV_SUBTYPE_LINK_FIFO,
 };
 
 enum coresight_dev_subtype_source {
-	CORESIGHT_DEV_SUBTYPE_SOURCE_NONE,
 	CORESIGHT_DEV_SUBTYPE_SOURCE_PROC,
 	CORESIGHT_DEV_SUBTYPE_SOURCE_BUS,
 	CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE,
 };
 
 enum coresight_dev_subtype_helper {
-	CORESIGHT_DEV_SUBTYPE_HELPER_NONE,
 	CORESIGHT_DEV_SUBTYPE_HELPER_CATU,
 };
 
diff --git a/include/linux/counter.h b/include/linux/counter.h
index d16ce2819b48..1fe17f5adb09 100644
--- a/include/linux/counter.h
+++ b/include/linux/counter.h
@@ -6,417 +6,280 @@
 #ifndef _COUNTER_H_
 #define _COUNTER_H_
 
-#include <linux/counter_enum.h>
+#include <linux/cdev.h>
 #include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/kfifo.h>
+#include <linux/mutex.h>
+#include <linux/spinlock_types.h>
 #include <linux/types.h>
-
-enum counter_count_direction {
-	COUNTER_COUNT_DIRECTION_FORWARD = 0,
-	COUNTER_COUNT_DIRECTION_BACKWARD
-};
-extern const char *const counter_count_direction_str[2];
-
-enum counter_count_mode {
-	COUNTER_COUNT_MODE_NORMAL = 0,
-	COUNTER_COUNT_MODE_RANGE_LIMIT,
-	COUNTER_COUNT_MODE_NON_RECYCLE,
-	COUNTER_COUNT_MODE_MODULO_N
-};
-extern const char *const counter_count_mode_str[4];
+#include <linux/wait.h>
+#include <uapi/linux/counter.h>
 
 struct counter_device;
+struct counter_count;
+struct counter_synapse;
 struct counter_signal;
 
+enum counter_comp_type {
+	COUNTER_COMP_U8,
+	COUNTER_COMP_U64,
+	COUNTER_COMP_BOOL,
+	COUNTER_COMP_SIGNAL_LEVEL,
+	COUNTER_COMP_FUNCTION,
+	COUNTER_COMP_SYNAPSE_ACTION,
+	COUNTER_COMP_ENUM,
+	COUNTER_COMP_COUNT_DIRECTION,
+	COUNTER_COMP_COUNT_MODE,
+};
+
 /**
- * struct counter_signal_ext - Counter Signal extensions
- * @name:	attribute name
- * @read:	read callback for this attribute; may be NULL
- * @write:	write callback for this attribute; may be NULL
- * @priv:	data private to the driver
+ * struct counter_comp - Counter component node
+ * @type:		Counter component data type
+ * @name:		device-specific component name
+ * @priv:		component-relevant data
+ * @action_read:		Synapse action mode read callback. The read value of the
+ *			respective Synapse action mode should be passed back via
+ *			the action parameter.
+ * @device_u8_read:		Device u8 component read callback. The read value of the
+ *			respective Device u8 component should be passed back via
+ *			the val parameter.
+ * @count_u8_read:		Count u8 component read callback. The read value of the
+ *			respective Count u8 component should be passed back via
+ *			the val parameter.
+ * @signal_u8_read:		Signal u8 component read callback. The read value of the
+ *			respective Signal u8 component should be passed back via
+ *			the val parameter.
+ * @device_u32_read:		Device u32 component read callback. The read value of
+ *			the respective Device u32 component should be passed
+ *			back via the val parameter.
+ * @count_u32_read:		Count u32 component read callback. The read value of the
+ *			respective Count u32 component should be passed back via
+ *			the val parameter.
+ * @signal_u32_read:		Signal u32 component read callback. The read value of
+ *			the respective Signal u32 component should be passed
+ *			back via the val parameter.
+ * @device_u64_read:		Device u64 component read callback. The read value of
+ *			the respective Device u64 component should be passed
+ *			back via the val parameter.
+ * @count_u64_read:		Count u64 component read callback. The read value of the
+ *			respective Count u64 component should be passed back via
+ *			the val parameter.
+ * @signal_u64_read:		Signal u64 component read callback. The read value of
+ *			the respective Signal u64 component should be passed
+ *			back via the val parameter.
+ * @action_write:		Synapse action mode write callback. The write value of
+ *			the respective Synapse action mode is passed via the
+ *			action parameter.
+ * @device_u8_write:		Device u8 component write callback. The write value of
+ *			the respective Device u8 component is passed via the val
+ *			parameter.
+ * @count_u8_write:		Count u8 component write callback. The write value of
+ *			the respective Count u8 component is passed via the val
+ *			parameter.
+ * @signal_u8_write:		Signal u8 component write callback. The write value of
+ *			the respective Signal u8 component is passed via the val
+ *			parameter.
+ * @device_u32_write:		Device u32 component write callback. The write value of
+ *			the respective Device u32 component is passed via the
+ *			val parameter.
+ * @count_u32_write:		Count u32 component write callback. The write value of
+ *			the respective Count u32 component is passed via the val
+ *			parameter.
+ * @signal_u32_write:		Signal u32 component write callback. The write value of
+ *			the respective Signal u32 component is passed via the
+ *			val parameter.
+ * @device_u64_write:		Device u64 component write callback. The write value of
+ *			the respective Device u64 component is passed via the
+ *			val parameter.
+ * @count_u64_write:		Count u64 component write callback. The write value of
+ *			the respective Count u64 component is passed via the val
+ *			parameter.
+ * @signal_u64_write:		Signal u64 component write callback. The write value of
+ *			the respective Signal u64 component is passed via the
+ *			val parameter.
  */
-struct counter_signal_ext {
+struct counter_comp {
+	enum counter_comp_type type;
 	const char *name;
-	ssize_t (*read)(struct counter_device *counter,
-			struct counter_signal *signal, void *priv, char *buf);
-	ssize_t (*write)(struct counter_device *counter,
-			 struct counter_signal *signal, void *priv,
-			 const char *buf, size_t len);
 	void *priv;
+	union {
+		int (*action_read)(struct counter_device *counter,
+				   struct counter_count *count,
+				   struct counter_synapse *synapse,
+				   enum counter_synapse_action *action);
+		int (*device_u8_read)(struct counter_device *counter, u8 *val);
+		int (*count_u8_read)(struct counter_device *counter,
+				     struct counter_count *count, u8 *val);
+		int (*signal_u8_read)(struct counter_device *counter,
+				      struct counter_signal *signal, u8 *val);
+		int (*device_u32_read)(struct counter_device *counter,
+				       u32 *val);
+		int (*count_u32_read)(struct counter_device *counter,
+				      struct counter_count *count, u32 *val);
+		int (*signal_u32_read)(struct counter_device *counter,
+				       struct counter_signal *signal, u32 *val);
+		int (*device_u64_read)(struct counter_device *counter,
+				       u64 *val);
+		int (*count_u64_read)(struct counter_device *counter,
+				      struct counter_count *count, u64 *val);
+		int (*signal_u64_read)(struct counter_device *counter,
+				       struct counter_signal *signal, u64 *val);
+	};
+	union {
+		int (*action_write)(struct counter_device *counter,
+				    struct counter_count *count,
+				    struct counter_synapse *synapse,
+				    enum counter_synapse_action action);
+		int (*device_u8_write)(struct counter_device *counter, u8 val);
+		int (*count_u8_write)(struct counter_device *counter,
+				      struct counter_count *count, u8 val);
+		int (*signal_u8_write)(struct counter_device *counter,
+				       struct counter_signal *signal, u8 val);
+		int (*device_u32_write)(struct counter_device *counter,
+					u32 val);
+		int (*count_u32_write)(struct counter_device *counter,
+				       struct counter_count *count, u32 val);
+		int (*signal_u32_write)(struct counter_device *counter,
+					struct counter_signal *signal, u32 val);
+		int (*device_u64_write)(struct counter_device *counter,
+					u64 val);
+		int (*count_u64_write)(struct counter_device *counter,
+				       struct counter_count *count, u64 val);
+		int (*signal_u64_write)(struct counter_device *counter,
+					struct counter_signal *signal, u64 val);
+	};
 };
 
 /**
  * struct counter_signal - Counter Signal node
- * @id:		unique ID used to identify signal
- * @name:	device-specific Signal name; ideally, this should match the name
- *		as it appears in the datasheet documentation
- * @ext:	optional array of Counter Signal extensions
- * @num_ext:	number of Counter Signal extensions specified in @ext
- * @priv:	optional private data supplied by driver
+ * @id:		unique ID used to identify the Signal
+ * @name:	device-specific Signal name
+ * @ext:	optional array of Signal extensions
+ * @num_ext:	number of Signal extensions specified in @ext
  */
 struct counter_signal {
 	int id;
 	const char *name;
 
-	const struct counter_signal_ext *ext;
+	struct counter_comp *ext;
 	size_t num_ext;
-
-	void *priv;
-};
-
-/**
- * struct counter_signal_enum_ext - Signal enum extension attribute
- * @items:	Array of strings
- * @num_items:	Number of items specified in @items
- * @set:	Set callback function; may be NULL
- * @get:	Get callback function; may be NULL
- *
- * The counter_signal_enum_ext structure can be used to implement enum style
- * Signal extension attributes. Enum style attributes are those which have a set
- * of strings that map to unsigned integer values. The Generic Counter Signal
- * enum extension helper code takes care of mapping between value and string, as
- * well as generating a "_available" file which contains a list of all available
- * items. The get callback is used to query the currently active item; the index
- * of the item within the respective items array is returned via the 'item'
- * parameter. The set callback is called when the attribute is updated; the
- * 'item' parameter contains the index of the newly activated item within the
- * respective items array.
- */
-struct counter_signal_enum_ext {
-	const char * const *items;
-	size_t num_items;
-	int (*get)(struct counter_device *counter,
-		   struct counter_signal *signal, size_t *item);
-	int (*set)(struct counter_device *counter,
-		   struct counter_signal *signal, size_t item);
-};
-
-/**
- * COUNTER_SIGNAL_ENUM() - Initialize Signal enum extension
- * @_name:	Attribute name
- * @_e:		Pointer to a counter_signal_enum_ext structure
- *
- * This should usually be used together with COUNTER_SIGNAL_ENUM_AVAILABLE()
- */
-#define COUNTER_SIGNAL_ENUM(_name, _e) \
-{ \
-	.name = (_name), \
-	.read = counter_signal_enum_read, \
-	.write = counter_signal_enum_write, \
-	.priv = (_e) \
-}
-
-/**
- * COUNTER_SIGNAL_ENUM_AVAILABLE() - Initialize Signal enum available extension
- * @_name:	Attribute name ("_available" will be appended to the name)
- * @_e:		Pointer to a counter_signal_enum_ext structure
- *
- * Creates a read only attribute that lists all the available enum items in a
- * newline separated list. This should usually be used together with
- * COUNTER_SIGNAL_ENUM()
- */
-#define COUNTER_SIGNAL_ENUM_AVAILABLE(_name, _e) \
-{ \
-	.name = (_name "_available"), \
-	.read = counter_signal_enum_available_read, \
-	.priv = (_e) \
-}
-
-enum counter_synapse_action {
-	COUNTER_SYNAPSE_ACTION_NONE = 0,
-	COUNTER_SYNAPSE_ACTION_RISING_EDGE,
-	COUNTER_SYNAPSE_ACTION_FALLING_EDGE,
-	COUNTER_SYNAPSE_ACTION_BOTH_EDGES
 };
 
 /**
  * struct counter_synapse - Counter Synapse node
- * @action:		index of current action mode
  * @actions_list:	array of available action modes
  * @num_actions:	number of action modes specified in @actions_list
- * @signal:		pointer to associated signal
+ * @signal:		pointer to the associated Signal
  */
 struct counter_synapse {
-	size_t action;
 	const enum counter_synapse_action *actions_list;
 	size_t num_actions;
 
 	struct counter_signal *signal;
 };
 
-struct counter_count;
-
-/**
- * struct counter_count_ext - Counter Count extension
- * @name:	attribute name
- * @read:	read callback for this attribute; may be NULL
- * @write:	write callback for this attribute; may be NULL
- * @priv:	data private to the driver
- */
-struct counter_count_ext {
-	const char *name;
-	ssize_t (*read)(struct counter_device *counter,
-			struct counter_count *count, void *priv, char *buf);
-	ssize_t (*write)(struct counter_device *counter,
-			 struct counter_count *count, void *priv,
-			 const char *buf, size_t len);
-	void *priv;
-};
-
-enum counter_function {
-	COUNTER_FUNCTION_INCREASE = 0,
-	COUNTER_FUNCTION_DECREASE,
-	COUNTER_FUNCTION_PULSE_DIRECTION,
-	COUNTER_FUNCTION_QUADRATURE_X1_A,
-	COUNTER_FUNCTION_QUADRATURE_X1_B,
-	COUNTER_FUNCTION_QUADRATURE_X2_A,
-	COUNTER_FUNCTION_QUADRATURE_X2_B,
-	COUNTER_FUNCTION_QUADRATURE_X4
-};
-
 /**
  * struct counter_count - Counter Count node
- * @id:			unique ID used to identify Count
- * @name:		device-specific Count name; ideally, this should match
- *			the name as it appears in the datasheet documentation
- * @function:		index of current function mode
- * @functions_list:	array available function modes
+ * @id:			unique ID used to identify the Count
+ * @name:		device-specific Count name
+ * @functions_list:	array of available function modes
  * @num_functions:	number of function modes specified in @functions_list
- * @synapses:		array of synapses for initialization
- * @num_synapses:	number of synapses specified in @synapses
- * @ext:		optional array of Counter Count extensions
- * @num_ext:		number of Counter Count extensions specified in @ext
- * @priv:		optional private data supplied by driver
+ * @synapses:		array of Synapses for initialization
+ * @num_synapses:	number of Synapses specified in @synapses
+ * @ext:		optional array of Count extensions
+ * @num_ext:		number of Count extensions specified in @ext
  */
 struct counter_count {
 	int id;
 	const char *name;
 
-	size_t function;
 	const enum counter_function *functions_list;
 	size_t num_functions;
 
 	struct counter_synapse *synapses;
 	size_t num_synapses;
 
-	const struct counter_count_ext *ext;
+	struct counter_comp *ext;
 	size_t num_ext;
-
-	void *priv;
-};
-
-/**
- * struct counter_count_enum_ext - Count enum extension attribute
- * @items:	Array of strings
- * @num_items:	Number of items specified in @items
- * @set:	Set callback function; may be NULL
- * @get:	Get callback function; may be NULL
- *
- * The counter_count_enum_ext structure can be used to implement enum style
- * Count extension attributes. Enum style attributes are those which have a set
- * of strings that map to unsigned integer values. The Generic Counter Count
- * enum extension helper code takes care of mapping between value and string, as
- * well as generating a "_available" file which contains a list of all available
- * items. The get callback is used to query the currently active item; the index
- * of the item within the respective items array is returned via the 'item'
- * parameter. The set callback is called when the attribute is updated; the
- * 'item' parameter contains the index of the newly activated item within the
- * respective items array.
- */
-struct counter_count_enum_ext {
-	const char * const *items;
-	size_t num_items;
-	int (*get)(struct counter_device *counter, struct counter_count *count,
-		   size_t *item);
-	int (*set)(struct counter_device *counter, struct counter_count *count,
-		   size_t item);
-};
-
-/**
- * COUNTER_COUNT_ENUM() - Initialize Count enum extension
- * @_name:	Attribute name
- * @_e:		Pointer to a counter_count_enum_ext structure
- *
- * This should usually be used together with COUNTER_COUNT_ENUM_AVAILABLE()
- */
-#define COUNTER_COUNT_ENUM(_name, _e) \
-{ \
-	.name = (_name), \
-	.read = counter_count_enum_read, \
-	.write = counter_count_enum_write, \
-	.priv = (_e) \
-}
-
-/**
- * COUNTER_COUNT_ENUM_AVAILABLE() - Initialize Count enum available extension
- * @_name:	Attribute name ("_available" will be appended to the name)
- * @_e:		Pointer to a counter_count_enum_ext structure
- *
- * Creates a read only attribute that lists all the available enum items in a
- * newline separated list. This should usually be used together with
- * COUNTER_COUNT_ENUM()
- */
-#define COUNTER_COUNT_ENUM_AVAILABLE(_name, _e) \
-{ \
-	.name = (_name "_available"), \
-	.read = counter_count_enum_available_read, \
-	.priv = (_e) \
-}
-
-/**
- * struct counter_device_attr_group - internal container for attribute group
- * @attr_group:	Counter sysfs attributes group
- * @attr_list:	list to keep track of created Counter sysfs attributes
- * @num_attr:	number of Counter sysfs attributes
- */
-struct counter_device_attr_group {
-	struct attribute_group attr_group;
-	struct list_head attr_list;
-	size_t num_attr;
 };
 
 /**
- * struct counter_device_state - internal state container for a Counter device
- * @id:			unique ID used to identify the Counter
- * @dev:		internal device structure
- * @groups_list:	attribute groups list (for Signals, Counts, and ext)
- * @num_groups:		number of attribute groups containers
- * @groups:		Counter sysfs attribute groups (to populate @dev.groups)
+ * struct counter_event_node - Counter Event node
+ * @l:		list of current watching Counter events
+ * @event:	event that triggers
+ * @channel:	event channel
+ * @comp_list:	list of components to watch when event triggers
  */
-struct counter_device_state {
-	int id;
-	struct device dev;
-	struct counter_device_attr_group *groups_list;
-	size_t num_groups;
-	const struct attribute_group **groups;
-};
-
-enum counter_signal_level {
-	COUNTER_SIGNAL_LEVEL_LOW,
-	COUNTER_SIGNAL_LEVEL_HIGH,
+struct counter_event_node {
+	struct list_head l;
+	u8 event;
+	u8 channel;
+	struct list_head comp_list;
 };
 
 /**
  * struct counter_ops - Callbacks from driver
- * @signal_read:	optional read callback for Signal attribute. The read
- *			level of the respective Signal should be passed back via
- *			the level parameter.
- * @count_read:		optional read callback for Count attribute. The read
- *			value of the respective Count should be passed back via
- *			the val parameter.
- * @count_write:	optional write callback for Count attribute. The write
- *			value for the respective Count is passed in via the val
+ * @signal_read:	optional read callback for Signals. The read level of
+ *			the respective Signal should be passed back via the
+ *			level parameter.
+ * @count_read:		read callback for Counts. The read value of the
+ *			respective Count should be passed back via the value
+ *			parameter.
+ * @count_write:	optional write callback for Counts. The write value for
+ *			the respective Count is passed in via the value
  *			parameter.
- * @function_get:	function to get the current count function mode. Returns
- *			0 on success and negative error code on error. The index
- *			of the respective Count's returned function mode should
- *			be passed back via the function parameter.
- * @function_set:	function to set the count function mode. function is the
- *			index of the requested function mode from the respective
- *			Count's functions_list array.
- * @action_get:		function to get the current action mode. Returns 0 on
- *			success and negative error code on error. The index of
- *			the respective Synapse's returned action mode should be
+ * @function_read:	read callback the Count function modes. The read
+ *			function mode of the respective Count should be passed
+ *			back via the function parameter.
+ * @function_write:	optional write callback for Count function modes. The
+ *			function mode to write for the respective Count is
+ *			passed in via the function parameter.
+ * @action_read:	optional read callback the Synapse action modes. The
+ *			read action mode of the respective Synapse should be
  *			passed back via the action parameter.
- * @action_set:		function to set the action mode. action is the index of
- *			the requested action mode from the respective Synapse's
- *			actions_list array.
+ * @action_write:	optional write callback for Synapse action modes. The
+ *			action mode to write for the respective Synapse is
+ *			passed in via the action parameter.
+ * @events_configure:	optional write callback to configure events. The list of
+ *			struct counter_event_node may be accessed via the
+ *			events_list member of the counter parameter.
+ * @watch_validate:	optional callback to validate a watch. The Counter
+ *			component watch configuration is passed in via the watch
+ *			parameter. A return value of 0 indicates a valid Counter
+ *			component watch configuration.
  */
 struct counter_ops {
 	int (*signal_read)(struct counter_device *counter,
 			   struct counter_signal *signal,
 			   enum counter_signal_level *level);
 	int (*count_read)(struct counter_device *counter,
-			  struct counter_count *count, unsigned long *val);
+			  struct counter_count *count, u64 *value);
 	int (*count_write)(struct counter_device *counter,
-			   struct counter_count *count, unsigned long val);
-	int (*function_get)(struct counter_device *counter,
-			    struct counter_count *count, size_t *function);
-	int (*function_set)(struct counter_device *counter,
-			    struct counter_count *count, size_t function);
-	int (*action_get)(struct counter_device *counter,
-			  struct counter_count *count,
-			  struct counter_synapse *synapse, size_t *action);
-	int (*action_set)(struct counter_device *counter,
-			  struct counter_count *count,
-			  struct counter_synapse *synapse, size_t action);
+			   struct counter_count *count, u64 value);
+	int (*function_read)(struct counter_device *counter,
+			     struct counter_count *count,
+			     enum counter_function *function);
+	int (*function_write)(struct counter_device *counter,
+			      struct counter_count *count,
+			      enum counter_function function);
+	int (*action_read)(struct counter_device *counter,
+			   struct counter_count *count,
+			   struct counter_synapse *synapse,
+			   enum counter_synapse_action *action);
+	int (*action_write)(struct counter_device *counter,
+			    struct counter_count *count,
+			    struct counter_synapse *synapse,
+			    enum counter_synapse_action action);
+	int (*events_configure)(struct counter_device *counter);
+	int (*watch_validate)(struct counter_device *counter,
+			      const struct counter_watch *watch);
 };
 
 /**
- * struct counter_device_ext - Counter device extension
- * @name:	attribute name
- * @read:	read callback for this attribute; may be NULL
- * @write:	write callback for this attribute; may be NULL
- * @priv:	data private to the driver
- */
-struct counter_device_ext {
-	const char *name;
-	ssize_t (*read)(struct counter_device *counter, void *priv, char *buf);
-	ssize_t (*write)(struct counter_device *counter, void *priv,
-			 const char *buf, size_t len);
-	void *priv;
-};
-
-/**
- * struct counter_device_enum_ext - Counter enum extension attribute
- * @items:	Array of strings
- * @num_items:	Number of items specified in @items
- * @set:	Set callback function; may be NULL
- * @get:	Get callback function; may be NULL
- *
- * The counter_device_enum_ext structure can be used to implement enum style
- * Counter extension attributes. Enum style attributes are those which have a
- * set of strings that map to unsigned integer values. The Generic Counter enum
- * extension helper code takes care of mapping between value and string, as well
- * as generating a "_available" file which contains a list of all available
- * items. The get callback is used to query the currently active item; the index
- * of the item within the respective items array is returned via the 'item'
- * parameter. The set callback is called when the attribute is updated; the
- * 'item' parameter contains the index of the newly activated item within the
- * respective items array.
- */
-struct counter_device_enum_ext {
-	const char * const *items;
-	size_t num_items;
-	int (*get)(struct counter_device *counter, size_t *item);
-	int (*set)(struct counter_device *counter, size_t item);
-};
-
-/**
- * COUNTER_DEVICE_ENUM() - Initialize Counter enum extension
- * @_name:	Attribute name
- * @_e:		Pointer to a counter_device_enum_ext structure
- *
- * This should usually be used together with COUNTER_DEVICE_ENUM_AVAILABLE()
- */
-#define COUNTER_DEVICE_ENUM(_name, _e) \
-{ \
-	.name = (_name), \
-	.read = counter_device_enum_read, \
-	.write = counter_device_enum_write, \
-	.priv = (_e) \
-}
-
-/**
- * COUNTER_DEVICE_ENUM_AVAILABLE() - Initialize Counter enum available extension
- * @_name:	Attribute name ("_available" will be appended to the name)
- * @_e:		Pointer to a counter_device_enum_ext structure
- *
- * Creates a read only attribute that lists all the available enum items in a
- * newline separated list. This should usually be used together with
- * COUNTER_DEVICE_ENUM()
- */
-#define COUNTER_DEVICE_ENUM_AVAILABLE(_name, _e) \
-{ \
-	.name = (_name "_available"), \
-	.read = counter_device_enum_available_read, \
-	.priv = (_e) \
-}
-
-/**
  * struct counter_device - Counter data structure
- * @name:		name of the device as it appears in the datasheet
+ * @name:		name of the device
  * @parent:		optional parent device providing the counters
- * @device_state:	internal device state container
  * @ops:		callbacks from driver
  * @signals:		array of Signals
  * @num_signals:	number of Signals specified in @signals
@@ -425,11 +288,21 @@ struct counter_device_enum_ext {
  * @ext:		optional array of Counter device extensions
  * @num_ext:		number of Counter device extensions specified in @ext
  * @priv:		optional private data supplied by driver
+ * @dev:		internal device structure
+ * @chrdev:		internal character device structure
+ * @events_list:	list of current watching Counter events
+ * @events_list_lock:	lock to protect Counter events list operations
+ * @next_events_list:	list of next watching Counter events
+ * @n_events_list_lock:	lock to protect Counter next events list operations
+ * @events:		queue of detected Counter events
+ * @events_wait:	wait queue to allow blocking reads of Counter events
+ * @events_in_lock:	lock to protect Counter events queue in operations
+ * @events_out_lock:	lock to protect Counter events queue out operations
+ * @ops_exist_lock:	lock to prevent use during removal
  */
 struct counter_device {
 	const char *name;
 	struct device *parent;
-	struct counter_device_state *device_state;
 
 	const struct counter_ops *ops;
 
@@ -438,17 +311,176 @@ struct counter_device {
 	struct counter_count *counts;
 	size_t num_counts;
 
-	const struct counter_device_ext *ext;
+	struct counter_comp *ext;
 	size_t num_ext;
 
-	void *priv;
+	struct device dev;
+	struct cdev chrdev;
+	struct list_head events_list;
+	spinlock_t events_list_lock;
+	struct list_head next_events_list;
+	struct mutex n_events_list_lock;
+	DECLARE_KFIFO_PTR(events, struct counter_event);
+	wait_queue_head_t events_wait;
+	spinlock_t events_in_lock;
+	struct mutex events_out_lock;
+	struct mutex ops_exist_lock;
 };
 
-int counter_register(struct counter_device *const counter);
+void *counter_priv(const struct counter_device *const counter);
+
+struct counter_device *counter_alloc(size_t sizeof_priv);
+void counter_put(struct counter_device *const counter);
+int counter_add(struct counter_device *const counter);
+
 void counter_unregister(struct counter_device *const counter);
-int devm_counter_register(struct device *dev,
-			  struct counter_device *const counter);
-void devm_counter_unregister(struct device *dev,
-			     struct counter_device *const counter);
+struct counter_device *devm_counter_alloc(struct device *dev,
+					  size_t sizeof_priv);
+int devm_counter_add(struct device *dev,
+		     struct counter_device *const counter);
+void counter_push_event(struct counter_device *const counter, const u8 event,
+			const u8 channel);
+
+#define COUNTER_COMP_DEVICE_U8(_name, _read, _write) \
+{ \
+	.type = COUNTER_COMP_U8, \
+	.name = (_name), \
+	.device_u8_read = (_read), \
+	.device_u8_write = (_write), \
+}
+#define COUNTER_COMP_COUNT_U8(_name, _read, _write) \
+{ \
+	.type = COUNTER_COMP_U8, \
+	.name = (_name), \
+	.count_u8_read = (_read), \
+	.count_u8_write = (_write), \
+}
+#define COUNTER_COMP_SIGNAL_U8(_name, _read, _write) \
+{ \
+	.type = COUNTER_COMP_U8, \
+	.name = (_name), \
+	.signal_u8_read = (_read), \
+	.signal_u8_write = (_write), \
+}
+
+#define COUNTER_COMP_DEVICE_U64(_name, _read, _write) \
+{ \
+	.type = COUNTER_COMP_U64, \
+	.name = (_name), \
+	.device_u64_read = (_read), \
+	.device_u64_write = (_write), \
+}
+#define COUNTER_COMP_COUNT_U64(_name, _read, _write) \
+{ \
+	.type = COUNTER_COMP_U64, \
+	.name = (_name), \
+	.count_u64_read = (_read), \
+	.count_u64_write = (_write), \
+}
+#define COUNTER_COMP_SIGNAL_U64(_name, _read, _write) \
+{ \
+	.type = COUNTER_COMP_U64, \
+	.name = (_name), \
+	.signal_u64_read = (_read), \
+	.signal_u64_write = (_write), \
+}
+
+#define COUNTER_COMP_DEVICE_BOOL(_name, _read, _write) \
+{ \
+	.type = COUNTER_COMP_BOOL, \
+	.name = (_name), \
+	.device_u8_read = (_read), \
+	.device_u8_write = (_write), \
+}
+#define COUNTER_COMP_COUNT_BOOL(_name, _read, _write) \
+{ \
+	.type = COUNTER_COMP_BOOL, \
+	.name = (_name), \
+	.count_u8_read = (_read), \
+	.count_u8_write = (_write), \
+}
+#define COUNTER_COMP_SIGNAL_BOOL(_name, _read, _write) \
+{ \
+	.type = COUNTER_COMP_BOOL, \
+	.name = (_name), \
+	.signal_u8_read = (_read), \
+	.signal_u8_write = (_write), \
+}
+
+struct counter_available {
+	union {
+		const u32 *enums;
+		const char *const *strs;
+	};
+	size_t num_items;
+};
+
+#define DEFINE_COUNTER_AVAILABLE(_name, _enums) \
+	struct counter_available _name = { \
+		.enums = (_enums), \
+		.num_items = ARRAY_SIZE(_enums), \
+	}
+
+#define DEFINE_COUNTER_ENUM(_name, _strs) \
+	struct counter_available _name = { \
+		.strs = (_strs), \
+		.num_items = ARRAY_SIZE(_strs), \
+	}
+
+#define COUNTER_COMP_DEVICE_ENUM(_name, _get, _set, _available) \
+{ \
+	.type = COUNTER_COMP_ENUM, \
+	.name = (_name), \
+	.device_u32_read = (_get), \
+	.device_u32_write = (_set), \
+	.priv = &(_available), \
+}
+#define COUNTER_COMP_COUNT_ENUM(_name, _get, _set, _available) \
+{ \
+	.type = COUNTER_COMP_ENUM, \
+	.name = (_name), \
+	.count_u32_read = (_get), \
+	.count_u32_write = (_set), \
+	.priv = &(_available), \
+}
+#define COUNTER_COMP_SIGNAL_ENUM(_name, _get, _set, _available) \
+{ \
+	.type = COUNTER_COMP_ENUM, \
+	.name = (_name), \
+	.signal_u32_read = (_get), \
+	.signal_u32_write = (_set), \
+	.priv = &(_available), \
+}
+
+#define COUNTER_COMP_CEILING(_read, _write) \
+	COUNTER_COMP_COUNT_U64("ceiling", _read, _write)
+
+#define COUNTER_COMP_COUNT_MODE(_read, _write, _available) \
+{ \
+	.type = COUNTER_COMP_COUNT_MODE, \
+	.name = "count_mode", \
+	.count_u32_read = (_read), \
+	.count_u32_write = (_write), \
+	.priv = &(_available), \
+}
+
+#define COUNTER_COMP_DIRECTION(_read) \
+{ \
+	.type = COUNTER_COMP_COUNT_DIRECTION, \
+	.name = "direction", \
+	.count_u32_read = (_read), \
+}
+
+#define COUNTER_COMP_ENABLE(_read, _write) \
+	COUNTER_COMP_COUNT_BOOL("enable", _read, _write)
+
+#define COUNTER_COMP_FLOOR(_read, _write) \
+	COUNTER_COMP_COUNT_U64("floor", _read, _write)
+
+#define COUNTER_COMP_PRESET(_read, _write) \
+	COUNTER_COMP_COUNT_U64("preset", _read, _write)
+
+#define COUNTER_COMP_PRESET_ENABLE(_read, _write) \
+	COUNTER_COMP_COUNT_BOOL("preset_enable", _read, _write)
 
 #endif /* _COUNTER_H_ */
diff --git a/include/linux/counter_enum.h b/include/linux/counter_enum.h
deleted file mode 100644
index 9f917298a88f..000000000000
--- a/include/linux/counter_enum.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Counter interface enum functions
- * Copyright (C) 2018 William Breathitt Gray
- */
-#ifndef _COUNTER_ENUM_H_
-#define _COUNTER_ENUM_H_
-
-#include <linux/types.h>
-
-struct counter_device;
-struct counter_signal;
-struct counter_count;
-
-ssize_t counter_signal_enum_read(struct counter_device *counter,
-				 struct counter_signal *signal, void *priv,
-				 char *buf);
-ssize_t counter_signal_enum_write(struct counter_device *counter,
-				  struct counter_signal *signal, void *priv,
-				  const char *buf, size_t len);
-
-ssize_t counter_signal_enum_available_read(struct counter_device *counter,
-					   struct counter_signal *signal,
-					   void *priv, char *buf);
-
-ssize_t counter_count_enum_read(struct counter_device *counter,
-				struct counter_count *count, void *priv,
-				char *buf);
-ssize_t counter_count_enum_write(struct counter_device *counter,
-				 struct counter_count *count, void *priv,
-				 const char *buf, size_t len);
-
-ssize_t counter_count_enum_available_read(struct counter_device *counter,
-					  struct counter_count *count,
-					  void *priv, char *buf);
-
-ssize_t counter_device_enum_read(struct counter_device *counter, void *priv,
-				 char *buf);
-ssize_t counter_device_enum_write(struct counter_device *counter, void *priv,
-				  const char *buf, size_t len);
-
-ssize_t counter_device_enum_available_read(struct counter_device *counter,
-					   void *priv, char *buf);
-
-#endif /* _COUNTER_ENUM_H_ */
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 9cf51e41e697..54dc2f9a2d56 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -167,7 +167,7 @@ static inline int suspend_disable_secondary_cpus(void) { return 0; }
 static inline void suspend_enable_secondary_cpus(void) { }
 #endif /* !CONFIG_PM_SLEEP_SMP */
 
-void cpu_startup_entry(enum cpuhp_state state);
+void __noreturn cpu_startup_entry(enum cpuhp_state state);
 
 void cpu_idle_poll_ctrl(bool enable);
 
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index ff88bb3e44fc..35c7d6db4139 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -119,6 +119,13 @@ struct cpufreq_policy {
 	bool			strict_target;
 
 	/*
+	 * Set if inefficient frequencies were found in the frequency table.
+	 * This indicates if the relation flag CPUFREQ_RELATION_E can be
+	 * honored.
+	 */
+	bool			efficiencies_available;
+
+	/*
 	 * Preferred average time interval between consecutive invocations of
 	 * the driver to set the frequency for this policy.  To be set by the
 	 * scaling driver (0, which is the default, means no preference).
@@ -273,6 +280,12 @@ static inline void cpufreq_stats_record_transition(struct cpufreq_policy *policy
 #define CPUFREQ_RELATION_L 0  /* lowest frequency at or above target */
 #define CPUFREQ_RELATION_H 1  /* highest frequency below or at target */
 #define CPUFREQ_RELATION_C 2  /* closest frequency to target */
+/* relation flags */
+#define CPUFREQ_RELATION_E BIT(2) /* Get if possible an efficient frequency */
+
+#define CPUFREQ_RELATION_LE (CPUFREQ_RELATION_L | CPUFREQ_RELATION_E)
+#define CPUFREQ_RELATION_HE (CPUFREQ_RELATION_H | CPUFREQ_RELATION_E)
+#define CPUFREQ_RELATION_CE (CPUFREQ_RELATION_C | CPUFREQ_RELATION_E)
 
 struct freq_attr {
 	struct attribute attr;
@@ -369,6 +382,9 @@ struct cpufreq_driver {
 	int		(*suspend)(struct cpufreq_policy *policy);
 	int		(*resume)(struct cpufreq_policy *policy);
 
+	/* Will be called after the driver is fully initialized */
+	void		(*ready)(struct cpufreq_policy *policy);
+
 	struct freq_attr **attr;
 
 	/* platform specific boost support code */
@@ -385,7 +401,7 @@ struct cpufreq_driver {
 /* flags */
 
 /*
- * Set by drivers that need to update internale upper and lower boundaries along
+ * Set by drivers that need to update internal upper and lower boundaries along
  * with the target frequency and so the core and governors should also invoke
  * the diver if the target frequency does not change, but the policy min or max
  * may have changed.
@@ -627,9 +643,11 @@ struct cpufreq_governor *cpufreq_fallback_governor(void);
 static inline void cpufreq_policy_apply_limits(struct cpufreq_policy *policy)
 {
 	if (policy->max < policy->cur)
-		__cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H);
+		__cpufreq_driver_target(policy, policy->max,
+					CPUFREQ_RELATION_HE);
 	else if (policy->min > policy->cur)
-		__cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);
+		__cpufreq_driver_target(policy, policy->min,
+					CPUFREQ_RELATION_LE);
 }
 
 /* Governor attribute set */
@@ -643,6 +661,11 @@ struct gov_attr_set {
 /* sysfs ops for cpufreq governors */
 extern const struct sysfs_ops governor_sysfs_ops;
 
+static inline struct gov_attr_set *to_gov_attr_set(struct kobject *kobj)
+{
+	return container_of(kobj, struct gov_attr_set, kobj);
+}
+
 void gov_attr_set_init(struct gov_attr_set *attr_set, struct list_head *list_node);
 void gov_attr_set_get(struct gov_attr_set *attr_set, struct list_head *list_node);
 unsigned int gov_attr_set_put(struct gov_attr_set *attr_set, struct list_head *list_node);
@@ -660,10 +683,11 @@ struct governor_attr {
  *********************************************************************/
 
 /* Special Values of .frequency field */
-#define CPUFREQ_ENTRY_INVALID	~0u
-#define CPUFREQ_TABLE_END	~1u
+#define CPUFREQ_ENTRY_INVALID		~0u
+#define CPUFREQ_TABLE_END		~1u
 /* Special Values of .flags field */
-#define CPUFREQ_BOOST_FREQ	(1 << 0)
+#define CPUFREQ_BOOST_FREQ		(1 << 0)
+#define CPUFREQ_INEFFICIENT_FREQ	(1 << 1)
 
 struct cpufreq_frequency_table {
 	unsigned int	flags;
@@ -740,6 +764,22 @@ static inline void dev_pm_opp_free_cpufreq_table(struct device *dev,
 			continue;					\
 		else
 
+/**
+ * cpufreq_for_each_efficient_entry_idx - iterate with index over a cpufreq
+ *	frequency_table excluding CPUFREQ_ENTRY_INVALID and
+ *	CPUFREQ_INEFFICIENT_FREQ frequencies.
+ * @pos: the &struct cpufreq_frequency_table to use as a loop cursor.
+ * @table: the &struct cpufreq_frequency_table to iterate over.
+ * @idx: the table entry currently being processed.
+ * @efficiencies: set to true to only iterate over efficient frequencies.
+ */
+
+#define cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies)	\
+	cpufreq_for_each_valid_entry_idx(pos, table, idx)			\
+		if (efficiencies && (pos->flags & CPUFREQ_INEFFICIENT_FREQ))	\
+			continue;						\
+		else
+
 
 int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
 				    struct cpufreq_frequency_table *table);
@@ -764,14 +804,15 @@ bool policy_has_boost_freq(struct cpufreq_policy *policy);
 
 /* Find lowest freq at or above target in a table in ascending order */
 static inline int cpufreq_table_find_index_al(struct cpufreq_policy *policy,
-					      unsigned int target_freq)
+					      unsigned int target_freq,
+					      bool efficiencies)
 {
 	struct cpufreq_frequency_table *table = policy->freq_table;
 	struct cpufreq_frequency_table *pos;
 	unsigned int freq;
 	int idx, best = -1;
 
-	cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+	cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
 		freq = pos->frequency;
 
 		if (freq >= target_freq)
@@ -785,14 +826,15 @@ static inline int cpufreq_table_find_index_al(struct cpufreq_policy *policy,
 
 /* Find lowest freq at or above target in a table in descending order */
 static inline int cpufreq_table_find_index_dl(struct cpufreq_policy *policy,
-					      unsigned int target_freq)
+					      unsigned int target_freq,
+					      bool efficiencies)
 {
 	struct cpufreq_frequency_table *table = policy->freq_table;
 	struct cpufreq_frequency_table *pos;
 	unsigned int freq;
 	int idx, best = -1;
 
-	cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+	cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
 		freq = pos->frequency;
 
 		if (freq == target_freq)
@@ -815,26 +857,30 @@ static inline int cpufreq_table_find_index_dl(struct cpufreq_policy *policy,
 
 /* Works only on sorted freq-tables */
 static inline int cpufreq_table_find_index_l(struct cpufreq_policy *policy,
-					     unsigned int target_freq)
+					     unsigned int target_freq,
+					     bool efficiencies)
 {
 	target_freq = clamp_val(target_freq, policy->min, policy->max);
 
 	if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
-		return cpufreq_table_find_index_al(policy, target_freq);
+		return cpufreq_table_find_index_al(policy, target_freq,
+						   efficiencies);
 	else
-		return cpufreq_table_find_index_dl(policy, target_freq);
+		return cpufreq_table_find_index_dl(policy, target_freq,
+						   efficiencies);
 }
 
 /* Find highest freq at or below target in a table in ascending order */
 static inline int cpufreq_table_find_index_ah(struct cpufreq_policy *policy,
-					      unsigned int target_freq)
+					      unsigned int target_freq,
+					      bool efficiencies)
 {
 	struct cpufreq_frequency_table *table = policy->freq_table;
 	struct cpufreq_frequency_table *pos;
 	unsigned int freq;
 	int idx, best = -1;
 
-	cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+	cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
 		freq = pos->frequency;
 
 		if (freq == target_freq)
@@ -857,14 +903,15 @@ static inline int cpufreq_table_find_index_ah(struct cpufreq_policy *policy,
 
 /* Find highest freq at or below target in a table in descending order */
 static inline int cpufreq_table_find_index_dh(struct cpufreq_policy *policy,
-					      unsigned int target_freq)
+					      unsigned int target_freq,
+					      bool efficiencies)
 {
 	struct cpufreq_frequency_table *table = policy->freq_table;
 	struct cpufreq_frequency_table *pos;
 	unsigned int freq;
 	int idx, best = -1;
 
-	cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+	cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
 		freq = pos->frequency;
 
 		if (freq <= target_freq)
@@ -878,26 +925,30 @@ static inline int cpufreq_table_find_index_dh(struct cpufreq_policy *policy,
 
 /* Works only on sorted freq-tables */
 static inline int cpufreq_table_find_index_h(struct cpufreq_policy *policy,
-					     unsigned int target_freq)
+					     unsigned int target_freq,
+					     bool efficiencies)
 {
 	target_freq = clamp_val(target_freq, policy->min, policy->max);
 
 	if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
-		return cpufreq_table_find_index_ah(policy, target_freq);
+		return cpufreq_table_find_index_ah(policy, target_freq,
+						   efficiencies);
 	else
-		return cpufreq_table_find_index_dh(policy, target_freq);
+		return cpufreq_table_find_index_dh(policy, target_freq,
+						   efficiencies);
 }
 
 /* Find closest freq to target in a table in ascending order */
 static inline int cpufreq_table_find_index_ac(struct cpufreq_policy *policy,
-					      unsigned int target_freq)
+					      unsigned int target_freq,
+					      bool efficiencies)
 {
 	struct cpufreq_frequency_table *table = policy->freq_table;
 	struct cpufreq_frequency_table *pos;
 	unsigned int freq;
 	int idx, best = -1;
 
-	cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+	cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
 		freq = pos->frequency;
 
 		if (freq == target_freq)
@@ -924,14 +975,15 @@ static inline int cpufreq_table_find_index_ac(struct cpufreq_policy *policy,
 
 /* Find closest freq to target in a table in descending order */
 static inline int cpufreq_table_find_index_dc(struct cpufreq_policy *policy,
-					      unsigned int target_freq)
+					      unsigned int target_freq,
+					      bool efficiencies)
 {
 	struct cpufreq_frequency_table *table = policy->freq_table;
 	struct cpufreq_frequency_table *pos;
 	unsigned int freq;
 	int idx, best = -1;
 
-	cpufreq_for_each_valid_entry_idx(pos, table, idx) {
+	cpufreq_for_each_efficient_entry_idx(pos, table, idx, efficiencies) {
 		freq = pos->frequency;
 
 		if (freq == target_freq)
@@ -958,35 +1010,58 @@ static inline int cpufreq_table_find_index_dc(struct cpufreq_policy *policy,
 
 /* Works only on sorted freq-tables */
 static inline int cpufreq_table_find_index_c(struct cpufreq_policy *policy,
-					     unsigned int target_freq)
+					     unsigned int target_freq,
+					     bool efficiencies)
 {
 	target_freq = clamp_val(target_freq, policy->min, policy->max);
 
 	if (policy->freq_table_sorted == CPUFREQ_TABLE_SORTED_ASCENDING)
-		return cpufreq_table_find_index_ac(policy, target_freq);
+		return cpufreq_table_find_index_ac(policy, target_freq,
+						   efficiencies);
 	else
-		return cpufreq_table_find_index_dc(policy, target_freq);
+		return cpufreq_table_find_index_dc(policy, target_freq,
+						   efficiencies);
 }
 
 static inline int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
 						 unsigned int target_freq,
 						 unsigned int relation)
 {
+	bool efficiencies = policy->efficiencies_available &&
+			    (relation & CPUFREQ_RELATION_E);
+	int idx;
+
+	/* cpufreq_table_index_unsorted() has no use for this flag anyway */
+	relation &= ~CPUFREQ_RELATION_E;
+
 	if (unlikely(policy->freq_table_sorted == CPUFREQ_TABLE_UNSORTED))
 		return cpufreq_table_index_unsorted(policy, target_freq,
 						    relation);
-
+retry:
 	switch (relation) {
 	case CPUFREQ_RELATION_L:
-		return cpufreq_table_find_index_l(policy, target_freq);
+		idx = cpufreq_table_find_index_l(policy, target_freq,
+						 efficiencies);
+		break;
 	case CPUFREQ_RELATION_H:
-		return cpufreq_table_find_index_h(policy, target_freq);
+		idx = cpufreq_table_find_index_h(policy, target_freq,
+						 efficiencies);
+		break;
 	case CPUFREQ_RELATION_C:
-		return cpufreq_table_find_index_c(policy, target_freq);
+		idx = cpufreq_table_find_index_c(policy, target_freq,
+						 efficiencies);
+		break;
 	default:
 		WARN_ON_ONCE(1);
 		return 0;
 	}
+
+	if (idx < 0 && efficiencies) {
+		efficiencies = false;
+		goto retry;
+	}
+
+	return idx;
 }
 
 static inline int cpufreq_table_count_valid_entries(const struct cpufreq_policy *policy)
@@ -1003,6 +1078,37 @@ static inline int cpufreq_table_count_valid_entries(const struct cpufreq_policy
 	return count;
 }
 
+/**
+ * cpufreq_table_set_inefficient() - Mark a frequency as inefficient
+ * @policy:	the &struct cpufreq_policy containing the inefficient frequency
+ * @frequency:	the inefficient frequency
+ *
+ * The &struct cpufreq_policy must use a sorted frequency table
+ *
+ * Return:	%0 on success or a negative errno code
+ */
+
+static inline int
+cpufreq_table_set_inefficient(struct cpufreq_policy *policy,
+			      unsigned int frequency)
+{
+	struct cpufreq_frequency_table *pos;
+
+	/* Not supported */
+	if (policy->freq_table_sorted == CPUFREQ_TABLE_UNSORTED)
+		return -EINVAL;
+
+	cpufreq_for_each_valid_entry(pos, policy->freq_table) {
+		if (pos->frequency == frequency) {
+			pos->flags |= CPUFREQ_INEFFICIENT_FREQ;
+			policy->efficiencies_available = true;
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
 static inline int parse_perf_domain(int cpu, const char *list_name,
 				    const char *cell_name)
 {
@@ -1041,7 +1147,7 @@ static inline int of_perf_domain_get_sharing_cpumask(int pcpu, const char *list_
 		if (cpu == pcpu)
 			continue;
 
-		ret = parse_perf_domain(pcpu, list_name, cell_name);
+		ret = parse_perf_domain(cpu, list_name, cell_name);
 		if (ret < 0)
 			continue;
 
@@ -1071,6 +1177,13 @@ static inline bool policy_has_boost_freq(struct cpufreq_policy *policy)
 	return false;
 }
 
+static inline int
+cpufreq_table_set_inefficient(struct cpufreq_policy *policy,
+			      unsigned int frequency)
+{
+	return -EINVAL;
+}
+
 static inline int of_perf_domain_get_sharing_cpumask(int pcpu, const char *list_name,
 						     const char *cell_name, struct cpumask *cpumask)
 {
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index 991911048857..82e33137f917 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -99,6 +99,8 @@ enum cpuhp_state {
 	CPUHP_LUSTRE_CFS_DEAD,
 	CPUHP_AP_ARM_CACHE_B15_RAC_DEAD,
 	CPUHP_PADATA_DEAD,
+	CPUHP_AP_DTPM_CPU_DEAD,
+	CPUHP_RANDOM_PREPARE,
 	CPUHP_WORKQUEUE_PREP,
 	CPUHP_POWER_NUMA_PREPARE,
 	CPUHP_HRTIMERS_PREPARE,
@@ -164,6 +166,7 @@ enum cpuhp_state {
 	CPUHP_AP_PERF_ARM_HW_BREAKPOINT_STARTING,
 	CPUHP_AP_PERF_ARM_ACPI_STARTING,
 	CPUHP_AP_PERF_ARM_STARTING,
+	CPUHP_AP_PERF_RISCV_STARTING,
 	CPUHP_AP_ARM_L2X0_STARTING,
 	CPUHP_AP_EXYNOS4_MCT_TIMER_STARTING,
 	CPUHP_AP_ARM_ARCH_TIMER_STARTING,
@@ -224,11 +227,13 @@ enum cpuhp_state {
 	CPUHP_AP_PERF_ARM_HISI_L3_ONLINE,
 	CPUHP_AP_PERF_ARM_HISI_PA_ONLINE,
 	CPUHP_AP_PERF_ARM_HISI_SLLC_ONLINE,
+	CPUHP_AP_PERF_ARM_HISI_PCIE_PMU_ONLINE,
 	CPUHP_AP_PERF_ARM_L2X0_ONLINE,
 	CPUHP_AP_PERF_ARM_QCOM_L2_ONLINE,
 	CPUHP_AP_PERF_ARM_QCOM_L3_ONLINE,
 	CPUHP_AP_PERF_ARM_APM_XGENE_ONLINE,
 	CPUHP_AP_PERF_ARM_CAVIUM_TX2_UNCORE_ONLINE,
+	CPUHP_AP_PERF_ARM_MARVELL_CN10K_DDR_ONLINE,
 	CPUHP_AP_PERF_POWERPC_NEST_IMC_ONLINE,
 	CPUHP_AP_PERF_POWERPC_CORE_IMC_ONLINE,
 	CPUHP_AP_PERF_POWERPC_THREAD_IMC_ONLINE,
@@ -238,6 +243,7 @@ enum cpuhp_state {
 	CPUHP_AP_PERF_CSKY_ONLINE,
 	CPUHP_AP_WATCHDOG_ONLINE,
 	CPUHP_AP_WORKQUEUE_ONLINE,
+	CPUHP_AP_RANDOM_ONLINE,
 	CPUHP_AP_RCUTREE_ONLINE,
 	CPUHP_AP_BASE_CACHEINFO_ONLINE,
 	CPUHP_AP_ONLINE_DYN,
@@ -246,7 +252,6 @@ enum cpuhp_state {
 	CPUHP_AP_MM_DEMOTION_ONLINE,
 	CPUHP_AP_X86_HPET_ONLINE,
 	CPUHP_AP_X86_KVM_CLK_ONLINE,
-	CPUHP_AP_DTPM_CPU_ONLINE,
 	CPUHP_AP_ACTIVE,
 	CPUHP_ONLINE,
 };
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 1e7399fc69c0..fe29ac7cc469 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -102,7 +102,7 @@ extern atomic_t __num_online_cpus;
 
 extern cpumask_t cpus_booted_once_mask;
 
-static inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits)
+static __always_inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits)
 {
 #ifdef CONFIG_DEBUG_PER_CPU_MAPS
 	WARN_ON_ONCE(cpu >= bits);
@@ -110,7 +110,7 @@ static inline void cpu_max_bits_warn(unsigned int cpu, unsigned int bits)
 }
 
 /* verify cpu argument to cpumask_* operators */
-static inline unsigned int cpumask_check(unsigned int cpu)
+static __always_inline unsigned int cpumask_check(unsigned int cpu)
 {
 	cpu_max_bits_warn(cpu, nr_cpumask_bits);
 	return cpu;
@@ -123,6 +123,17 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
 	return 0;
 }
 
+static inline unsigned int cpumask_first_zero(const struct cpumask *srcp)
+{
+	return 0;
+}
+
+static inline unsigned int cpumask_first_and(const struct cpumask *srcp1,
+					     const struct cpumask *srcp2)
+{
+	return 0;
+}
+
 static inline unsigned int cpumask_last(const struct cpumask *srcp)
 {
 	return 0;
@@ -167,7 +178,7 @@ static inline unsigned int cpumask_local_spread(unsigned int i, int node)
 
 static inline int cpumask_any_and_distribute(const struct cpumask *src1p,
 					     const struct cpumask *src2p) {
-	return cpumask_next_and(-1, src1p, src2p);
+	return cpumask_first_and(src1p, src2p);
 }
 
 static inline int cpumask_any_distribute(const struct cpumask *srcp)
@@ -196,6 +207,30 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
 }
 
 /**
+ * cpumask_first_zero - get the first unset cpu in a cpumask
+ * @srcp: the cpumask pointer
+ *
+ * Returns >= nr_cpu_ids if all cpus are set.
+ */
+static inline unsigned int cpumask_first_zero(const struct cpumask *srcp)
+{
+	return find_first_zero_bit(cpumask_bits(srcp), nr_cpumask_bits);
+}
+
+/**
+ * cpumask_first_and - return the first cpu from *srcp1 & *srcp2
+ * @src1p: the first input
+ * @src2p: the second input
+ *
+ * Returns >= nr_cpu_ids if no cpus set in both.  See also cpumask_next_and().
+ */
+static inline
+unsigned int cpumask_first_and(const struct cpumask *srcp1, const struct cpumask *srcp2)
+{
+	return find_first_and_bit(cpumask_bits(srcp1), cpumask_bits(srcp2), nr_cpumask_bits);
+}
+
+/**
  * cpumask_last - get the last CPU in a cpumask
  * @srcp:	- the cpumask pointer
  *
@@ -306,12 +341,12 @@ extern int cpumask_next_wrap(int n, const struct cpumask *mask, int start, bool
  * @cpu: cpu number (< nr_cpu_ids)
  * @dstp: the cpumask pointer
  */
-static inline void cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
+static __always_inline void cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
 {
 	set_bit(cpumask_check(cpu), cpumask_bits(dstp));
 }
 
-static inline void __cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
+static __always_inline void __cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
 {
 	__set_bit(cpumask_check(cpu), cpumask_bits(dstp));
 }
@@ -322,12 +357,12 @@ static inline void __cpumask_set_cpu(unsigned int cpu, struct cpumask *dstp)
  * @cpu: cpu number (< nr_cpu_ids)
  * @dstp: the cpumask pointer
  */
-static inline void cpumask_clear_cpu(int cpu, struct cpumask *dstp)
+static __always_inline void cpumask_clear_cpu(int cpu, struct cpumask *dstp)
 {
 	clear_bit(cpumask_check(cpu), cpumask_bits(dstp));
 }
 
-static inline void __cpumask_clear_cpu(int cpu, struct cpumask *dstp)
+static __always_inline void __cpumask_clear_cpu(int cpu, struct cpumask *dstp)
 {
 	__clear_bit(cpumask_check(cpu), cpumask_bits(dstp));
 }
@@ -339,7 +374,7 @@ static inline void __cpumask_clear_cpu(int cpu, struct cpumask *dstp)
  *
  * Returns 1 if @cpu is set in @cpumask, else returns 0
  */
-static inline int cpumask_test_cpu(int cpu, const struct cpumask *cpumask)
+static __always_inline int cpumask_test_cpu(int cpu, const struct cpumask *cpumask)
 {
 	return test_bit(cpumask_check(cpu), cpumask_bits((cpumask)));
 }
@@ -353,7 +388,7 @@ static inline int cpumask_test_cpu(int cpu, const struct cpumask *cpumask)
  *
  * test_and_set_bit wrapper for cpumasks.
  */
-static inline int cpumask_test_and_set_cpu(int cpu, struct cpumask *cpumask)
+static __always_inline int cpumask_test_and_set_cpu(int cpu, struct cpumask *cpumask)
 {
 	return test_and_set_bit(cpumask_check(cpu), cpumask_bits(cpumask));
 }
@@ -367,7 +402,7 @@ static inline int cpumask_test_and_set_cpu(int cpu, struct cpumask *cpumask)
  *
  * test_and_clear_bit wrapper for cpumasks.
  */
-static inline int cpumask_test_and_clear_cpu(int cpu, struct cpumask *cpumask)
+static __always_inline int cpumask_test_and_clear_cpu(int cpu, struct cpumask *cpumask)
 {
 	return test_and_clear_bit(cpumask_check(cpu), cpumask_bits(cpumask));
 }
@@ -586,15 +621,6 @@ static inline void cpumask_copy(struct cpumask *dstp,
 #define cpumask_any(srcp) cpumask_first(srcp)
 
 /**
- * cpumask_first_and - return the first cpu from *srcp1 & *srcp2
- * @src1p: the first input
- * @src2p: the second input
- *
- * Returns >= nr_cpu_ids if no cpus set in both.  See also cpumask_next_and().
- */
-#define cpumask_first_and(src1p, src2p) cpumask_next_and(-1, (src1p), (src2p))
-
-/**
  * cpumask_any_and - pick a "random" cpu from *mask1 & *mask2
  * @mask1: the first input cpumask
  * @mask2: the second input cpumask
diff --git a/include/linux/cpumask_api.h b/include/linux/cpumask_api.h
new file mode 100644
index 000000000000..83bd3ebe82b0
--- /dev/null
+++ b/include/linux/cpumask_api.h
@@ -0,0 +1 @@
+#include <linux/cpumask.h>
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h
index d2b9c41c8edf..d58e0476ee8e 100644
--- a/include/linux/cpuset.h
+++ b/include/linux/cpuset.h
@@ -34,6 +34,8 @@
  */
 extern struct static_key_false cpusets_pre_enable_key;
 extern struct static_key_false cpusets_enabled_key;
+extern struct static_key_false cpusets_insane_config_key;
+
 static inline bool cpusets_enabled(void)
 {
 	return static_branch_unlikely(&cpusets_enabled_key);
@@ -51,6 +53,19 @@ static inline void cpuset_dec(void)
 	static_branch_dec_cpuslocked(&cpusets_pre_enable_key);
 }
 
+/*
+ * This will get enabled whenever a cpuset configuration is considered
+ * unsupportable in general. E.g. movable only node which cannot satisfy
+ * any non movable allocations (see update_nodemask). Page allocator
+ * needs to make additional checks for those configurations and this
+ * check is meant to guard those checks without any overhead for sane
+ * configurations.
+ */
+static inline bool cpusets_insane_config(void)
+{
+	return static_branch_unlikely(&cpusets_insane_config_key);
+}
+
 extern int cpuset_init(void);
 extern void cpuset_init_smp(void);
 extern void cpuset_force_rebuild(void);
@@ -167,6 +182,8 @@ static inline void set_mems_allowed(nodemask_t nodemask)
 
 static inline bool cpusets_enabled(void) { return false; }
 
+static inline bool cpusets_insane_config(void) { return false; }
+
 static inline int cpuset_init(void) { return 0; }
 static inline void cpuset_init_smp(void) {}
 
diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h
index 2618577a4d6d..620821549b23 100644
--- a/include/linux/crash_dump.h
+++ b/include/linux/crash_dump.h
@@ -8,8 +8,6 @@
 #include <linux/pgtable.h>
 #include <uapi/linux/vmcore.h>
 
-#include <linux/pgtable.h> /* for pgprot_t */
-
 /* For IS_ENABLED(CONFIG_CRASH_DUMP) */
 #define ELFCORE_ADDR_MAX	(-1ULL)
 #define ELFCORE_ADDR_ERR	(-2ULL)
@@ -91,12 +89,32 @@ static inline void vmcore_unusable(void)
 		elfcorehdr_addr = ELFCORE_ADDR_ERR;
 }
 
-#define HAVE_OLDMEM_PFN_IS_RAM 1
-extern int register_oldmem_pfn_is_ram(int (*fn)(unsigned long pfn));
-extern void unregister_oldmem_pfn_is_ram(void);
+/**
+ * struct vmcore_cb - driver callbacks for /proc/vmcore handling
+ * @pfn_is_ram: check whether a PFN really is RAM and should be accessed when
+ *              reading the vmcore. Will return "true" if it is RAM or if the
+ *              callback cannot tell. If any callback returns "false", it's not
+ *              RAM and the page must not be accessed; zeroes should be
+ *              indicated in the vmcore instead. For example, a ballooned page
+ *              contains no data and reading from such a page will cause high
+ *              load in the hypervisor.
+ * @next: List head to manage registered callbacks internally; initialized by
+ *        register_vmcore_cb().
+ *
+ * vmcore callbacks allow drivers managing physical memory ranges to
+ * coordinate with vmcore handling code, for example, to prevent accessing
+ * physical memory ranges that should not be accessed when reading the vmcore,
+ * although included in the vmcore header as memory ranges to dump.
+ */
+struct vmcore_cb {
+	bool (*pfn_is_ram)(struct vmcore_cb *cb, unsigned long pfn);
+	struct list_head next;
+};
+extern void register_vmcore_cb(struct vmcore_cb *cb);
+extern void unregister_vmcore_cb(struct vmcore_cb *cb);
 
 #else /* !CONFIG_CRASH_DUMP */
-static inline bool is_kdump_kernel(void) { return 0; }
+static inline bool is_kdump_kernel(void) { return false; }
 #endif /* CONFIG_CRASH_DUMP */
 
 /* Device Dump information to be filled by drivers */
diff --git a/include/linux/crc64.h b/include/linux/crc64.h
index c756e65a1b58..e044c60d1e61 100644
--- a/include/linux/crc64.h
+++ b/include/linux/crc64.h
@@ -7,5 +7,12 @@
 
 #include <linux/types.h>
 
+#define CRC64_ROCKSOFT_STRING "crc64-rocksoft"
+
 u64 __pure crc64_be(u64 crc, const void *p, size_t len);
+u64 __pure crc64_rocksoft_generic(u64 crc, const void *p, size_t len);
+
+u64 crc64_rocksoft(const unsigned char *buffer, size_t len);
+u64 crc64_rocksoft_update(u64 crc, const unsigned char *buffer, size_t len);
+
 #endif /* _LINUX_CRC64_H */
diff --git a/include/linux/cred.h b/include/linux/cred.h
index fcbc6885cc09..9ed9232af934 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -176,7 +176,7 @@ extern int set_cred_ucounts(struct cred *);
  * check for validity of credentials
  */
 #ifdef CONFIG_DEBUG_CREDENTIALS
-extern void __invalid_creds(const struct cred *, const char *, unsigned);
+extern void __noreturn __invalid_creds(const struct cred *, const char *, unsigned);
 extern void __validate_process_creds(struct task_struct *,
 				     const char *, unsigned);
 
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index 855869e1fd32..2324ab6f1846 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -133,6 +133,15 @@
 #define CRYPTO_ALG_ALLOCATES_MEMORY	0x00010000
 
 /*
+ * Mark an algorithm as a service implementation only usable by a
+ * template and never by a normal user of the kernel crypto API.
+ * This is intended to be used by algorithms that are themselves
+ * not FIPS-approved but may instead be used to implement parts of
+ * a FIPS-approved algorithm (e.g., dh vs. ffdhe2048(dh)).
+ */
+#define CRYPTO_ALG_FIPS_INTERNAL	0x00020000
+
+/*
  * Transform masks and values (for crt_flags).
  */
 #define CRYPTO_TFM_NEED_KEY		0x00000001
diff --git a/include/linux/cuda.h b/include/linux/cuda.h
index 45bfe9d61271..daf3e6f98444 100644
--- a/include/linux/cuda.h
+++ b/include/linux/cuda.h
@@ -12,7 +12,7 @@
 #include <uapi/linux/cuda.h>
 
 
-extern int find_via_cuda(void);
+extern int __init find_via_cuda(void);
 extern int cuda_request(struct adb_request *req,
 			void (*done)(struct adb_request *), int nbytes, ...);
 extern void cuda_poll(void);
diff --git a/include/linux/damon.h b/include/linux/damon.h
index d68b67b8d458..f23cbfa4248d 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -11,9 +11,18 @@
 #include <linux/mutex.h>
 #include <linux/time64.h>
 #include <linux/types.h>
+#include <linux/random.h>
 
 /* Minimal region size.  Every damon_region is aligned by this. */
 #define DAMON_MIN_REGION	PAGE_SIZE
+/* Max priority score for DAMON-based operation schemes */
+#define DAMOS_MAX_SCORE		(99)
+
+/* Get a random number in [l, r) */
+static inline unsigned long damon_rand(unsigned long l, unsigned long r)
+{
+	return l + prandom_u32_max(r - l);
+}
 
 /**
  * struct damon_addr_range - Represents an address region of [@start, @end).
@@ -31,60 +40,266 @@ struct damon_addr_range {
  * @sampling_addr:	Address of the sample for the next access check.
  * @nr_accesses:	Access frequency of this region.
  * @list:		List head for siblings.
+ * @age:		Age of this region.
+ *
+ * @age is initially zero, increased for each aggregation interval, and reset
+ * to zero again if the access frequency is significantly changed.  If two
+ * regions are merged into a new region, both @nr_accesses and @age of the new
+ * region are set as region size-weighted average of those of the two regions.
  */
 struct damon_region {
 	struct damon_addr_range ar;
 	unsigned long sampling_addr;
 	unsigned int nr_accesses;
 	struct list_head list;
+
+	unsigned int age;
+/* private: Internal value for age calculation. */
+	unsigned int last_nr_accesses;
 };
 
 /**
  * struct damon_target - Represents a monitoring target.
- * @id:			Unique identifier for this target.
+ * @pid:		The PID of the virtual address space to monitor.
  * @nr_regions:		Number of monitoring target regions of this target.
  * @regions_list:	Head of the monitoring target regions of this target.
  * @list:		List head for siblings.
  *
  * Each monitoring context could have multiple targets.  For example, a context
  * for virtual memory address spaces could have multiple target processes.  The
- * @id of each target should be unique among the targets of the context.  For
- * example, in the virtual address monitoring context, it could be a pidfd or
- * an address of an mm_struct.
+ * @pid should be set for appropriate &struct damon_operations including the
+ * virtual address spaces monitoring operations.
  */
 struct damon_target {
-	unsigned long id;
+	struct pid *pid;
 	unsigned int nr_regions;
 	struct list_head regions_list;
 	struct list_head list;
 };
 
+/**
+ * enum damos_action - Represents an action of a Data Access Monitoring-based
+ * Operation Scheme.
+ *
+ * @DAMOS_WILLNEED:	Call ``madvise()`` for the region with MADV_WILLNEED.
+ * @DAMOS_COLD:		Call ``madvise()`` for the region with MADV_COLD.
+ * @DAMOS_PAGEOUT:	Call ``madvise()`` for the region with MADV_PAGEOUT.
+ * @DAMOS_HUGEPAGE:	Call ``madvise()`` for the region with MADV_HUGEPAGE.
+ * @DAMOS_NOHUGEPAGE:	Call ``madvise()`` for the region with MADV_NOHUGEPAGE.
+ * @DAMOS_STAT:		Do nothing but count the stat.
+ * @NR_DAMOS_ACTIONS:	Total number of DAMOS actions
+ */
+enum damos_action {
+	DAMOS_WILLNEED,
+	DAMOS_COLD,
+	DAMOS_PAGEOUT,
+	DAMOS_HUGEPAGE,
+	DAMOS_NOHUGEPAGE,
+	DAMOS_STAT,		/* Do nothing but only record the stat */
+	NR_DAMOS_ACTIONS,
+};
+
+/**
+ * struct damos_quota - Controls the aggressiveness of the given scheme.
+ * @ms:			Maximum milliseconds that the scheme can use.
+ * @sz:			Maximum bytes of memory that the action can be applied.
+ * @reset_interval:	Charge reset interval in milliseconds.
+ *
+ * @weight_sz:		Weight of the region's size for prioritization.
+ * @weight_nr_accesses:	Weight of the region's nr_accesses for prioritization.
+ * @weight_age:		Weight of the region's age for prioritization.
+ *
+ * To avoid consuming too much CPU time or IO resources for applying the
+ * &struct damos->action to large memory, DAMON allows users to set time and/or
+ * size quotas.  The quotas can be set by writing non-zero values to &ms and
+ * &sz, respectively.  If the time quota is set, DAMON tries to use only up to
+ * &ms milliseconds within &reset_interval for applying the action.  If the
+ * size quota is set, DAMON tries to apply the action only up to &sz bytes
+ * within &reset_interval.
+ *
+ * Internally, the time quota is transformed to a size quota using estimated
+ * throughput of the scheme's action.  DAMON then compares it against &sz and
+ * uses smaller one as the effective quota.
+ *
+ * For selecting regions within the quota, DAMON prioritizes current scheme's
+ * target memory regions using the &struct damon_operations->get_scheme_score.
+ * You could customize the prioritization logic by setting &weight_sz,
+ * &weight_nr_accesses, and &weight_age, because monitoring operations are
+ * encouraged to respect those.
+ */
+struct damos_quota {
+	unsigned long ms;
+	unsigned long sz;
+	unsigned long reset_interval;
+
+	unsigned int weight_sz;
+	unsigned int weight_nr_accesses;
+	unsigned int weight_age;
+
+/* private: */
+	/* For throughput estimation */
+	unsigned long total_charged_sz;
+	unsigned long total_charged_ns;
+
+	unsigned long esz;	/* Effective size quota in bytes */
+
+	/* For charging the quota */
+	unsigned long charged_sz;
+	unsigned long charged_from;
+	struct damon_target *charge_target_from;
+	unsigned long charge_addr_from;
+
+	/* For prioritization */
+	unsigned long histogram[DAMOS_MAX_SCORE + 1];
+	unsigned int min_score;
+};
+
+/**
+ * enum damos_wmark_metric - Represents the watermark metric.
+ *
+ * @DAMOS_WMARK_NONE:		Ignore the watermarks of the given scheme.
+ * @DAMOS_WMARK_FREE_MEM_RATE:	Free memory rate of the system in [0,1000].
+ * @NR_DAMOS_WMARK_METRICS:	Total number of DAMOS watermark metrics
+ */
+enum damos_wmark_metric {
+	DAMOS_WMARK_NONE,
+	DAMOS_WMARK_FREE_MEM_RATE,
+	NR_DAMOS_WMARK_METRICS,
+};
+
+/**
+ * struct damos_watermarks - Controls when a given scheme should be activated.
+ * @metric:	Metric for the watermarks.
+ * @interval:	Watermarks check time interval in microseconds.
+ * @high:	High watermark.
+ * @mid:	Middle watermark.
+ * @low:	Low watermark.
+ *
+ * If &metric is &DAMOS_WMARK_NONE, the scheme is always active.  Being active
+ * means DAMON does monitoring and applying the action of the scheme to
+ * appropriate memory regions.  Else, DAMON checks &metric of the system for at
+ * least every &interval microseconds and works as below.
+ *
+ * If &metric is higher than &high, the scheme is inactivated.  If &metric is
+ * between &mid and &low, the scheme is activated.  If &metric is lower than
+ * &low, the scheme is inactivated.
+ */
+struct damos_watermarks {
+	enum damos_wmark_metric metric;
+	unsigned long interval;
+	unsigned long high;
+	unsigned long mid;
+	unsigned long low;
+
+/* private: */
+	bool activated;
+};
+
+/**
+ * struct damos_stat - Statistics on a given scheme.
+ * @nr_tried:	Total number of regions that the scheme is tried to be applied.
+ * @sz_tried:	Total size of regions that the scheme is tried to be applied.
+ * @nr_applied:	Total number of regions that the scheme is applied.
+ * @sz_applied:	Total size of regions that the scheme is applied.
+ * @qt_exceeds: Total number of times the quota of the scheme has exceeded.
+ */
+struct damos_stat {
+	unsigned long nr_tried;
+	unsigned long sz_tried;
+	unsigned long nr_applied;
+	unsigned long sz_applied;
+	unsigned long qt_exceeds;
+};
+
+/**
+ * struct damos - Represents a Data Access Monitoring-based Operation Scheme.
+ * @min_sz_region:	Minimum size of target regions.
+ * @max_sz_region:	Maximum size of target regions.
+ * @min_nr_accesses:	Minimum ``->nr_accesses`` of target regions.
+ * @max_nr_accesses:	Maximum ``->nr_accesses`` of target regions.
+ * @min_age_region:	Minimum age of target regions.
+ * @max_age_region:	Maximum age of target regions.
+ * @action:		&damo_action to be applied to the target regions.
+ * @quota:		Control the aggressiveness of this scheme.
+ * @wmarks:		Watermarks for automated (in)activation of this scheme.
+ * @stat:		Statistics of this scheme.
+ * @list:		List head for siblings.
+ *
+ * For each aggregation interval, DAMON finds regions which fit in the
+ * condition (&min_sz_region, &max_sz_region, &min_nr_accesses,
+ * &max_nr_accesses, &min_age_region, &max_age_region) and applies &action to
+ * those.  To avoid consuming too much CPU time or IO resources for the
+ * &action, &quota is used.
+ *
+ * To do the work only when needed, schemes can be activated for specific
+ * system situations using &wmarks.  If all schemes that registered to the
+ * monitoring context are inactive, DAMON stops monitoring either, and just
+ * repeatedly checks the watermarks.
+ *
+ * If all schemes that registered to a &struct damon_ctx are inactive, DAMON
+ * stops monitoring and just repeatedly checks the watermarks.
+ *
+ * After applying the &action to each region, &stat_count and &stat_sz is
+ * updated to reflect the number of regions and total size of regions that the
+ * &action is applied.
+ */
+struct damos {
+	unsigned long min_sz_region;
+	unsigned long max_sz_region;
+	unsigned int min_nr_accesses;
+	unsigned int max_nr_accesses;
+	unsigned int min_age_region;
+	unsigned int max_age_region;
+	enum damos_action action;
+	struct damos_quota quota;
+	struct damos_watermarks wmarks;
+	struct damos_stat stat;
+	struct list_head list;
+};
+
+/**
+ * enum damon_ops_id - Identifier for each monitoring operations implementation
+ *
+ * @DAMON_OPS_VADDR:	Monitoring operations for virtual address spaces
+ * @DAMON_OPS_PADDR:	Monitoring operations for the physical address space
+ */
+enum damon_ops_id {
+	DAMON_OPS_VADDR,
+	DAMON_OPS_PADDR,
+	NR_DAMON_OPS,
+};
+
 struct damon_ctx;
 
 /**
- * struct damon_primitive	Monitoring primitives for given use cases.
+ * struct damon_operations - Monitoring operations for given use cases.
  *
- * @init:			Initialize primitive-internal data structures.
- * @update:			Update primitive-internal data structures.
+ * @id:				Identifier of this operations set.
+ * @init:			Initialize operations-related data structures.
+ * @update:			Update operations-related data structures.
  * @prepare_access_checks:	Prepare next access check of target regions.
  * @check_accesses:		Check the accesses to target regions.
  * @reset_aggregated:		Reset aggregated accesses monitoring results.
+ * @get_scheme_score:		Get the score of a region for a scheme.
+ * @apply_scheme:		Apply a DAMON-based operation scheme.
  * @target_valid:		Determine if the target is valid.
  * @cleanup:			Clean up the context.
  *
  * DAMON can be extended for various address spaces and usages.  For this,
- * users should register the low level primitives for their target address
- * space and usecase via the &damon_ctx.primitive.  Then, the monitoring thread
+ * users should register the low level operations for their target address
+ * space and usecase via the &damon_ctx.ops.  Then, the monitoring thread
  * (&damon_ctx.kdamond) calls @init and @prepare_access_checks before starting
- * the monitoring, @update after each &damon_ctx.primitive_update_interval, and
+ * the monitoring, @update after each &damon_ctx.ops_update_interval, and
  * @check_accesses, @target_valid and @prepare_access_checks after each
  * &damon_ctx.sample_interval.  Finally, @reset_aggregated is called after each
  * &damon_ctx.aggr_interval.
  *
- * @init should initialize primitive-internal data structures.  For example,
+ * Each &struct damon_operations instance having valid @id can be registered
+ * via damon_register_ops() and selected by damon_select_ops() later.
+ * @init should initialize operations-related data structures.  For example,
  * this could be used to construct proper monitoring target regions and link
  * those to @damon_ctx.adaptive_targets.
- * @update should update the primitive-internal data structures.  For example,
+ * @update should update the operations-related data structures.  For example,
  * this could be used to update monitoring target regions for current status.
  * @prepare_access_checks should manipulate the monitoring regions to be
  * prepared for the next access check.
@@ -94,22 +309,35 @@ struct damon_ctx;
  * of its update.  The value will be used for regions adjustment threshold.
  * @reset_aggregated should reset the access monitoring results that aggregated
  * by @check_accesses.
+ * @get_scheme_score should return the priority score of a region for a scheme
+ * as an integer in [0, &DAMOS_MAX_SCORE].
+ * @apply_scheme is called from @kdamond when a region for user provided
+ * DAMON-based operation scheme is found.  It should apply the scheme's action
+ * to the region and return bytes of the region that the action is successfully
+ * applied.
  * @target_valid should check whether the target is still valid for the
  * monitoring.
  * @cleanup is called from @kdamond just before its termination.
  */
-struct damon_primitive {
+struct damon_operations {
+	enum damon_ops_id id;
 	void (*init)(struct damon_ctx *context);
 	void (*update)(struct damon_ctx *context);
 	void (*prepare_access_checks)(struct damon_ctx *context);
 	unsigned int (*check_accesses)(struct damon_ctx *context);
 	void (*reset_aggregated)(struct damon_ctx *context);
+	int (*get_scheme_score)(struct damon_ctx *context,
+			struct damon_target *t, struct damon_region *r,
+			struct damos *scheme);
+	unsigned long (*apply_scheme)(struct damon_ctx *context,
+			struct damon_target *t, struct damon_region *r,
+			struct damos *scheme);
 	bool (*target_valid)(void *target);
 	void (*cleanup)(struct damon_ctx *context);
 };
 
-/*
- * struct damon_callback	Monitoring events notification callbacks.
+/**
+ * struct damon_callback - Monitoring events notification callbacks.
  *
  * @before_start:	Called before starting the monitoring.
  * @after_sampling:	Called after each sampling.
@@ -136,7 +364,7 @@ struct damon_callback {
 	int (*before_start)(struct damon_ctx *context);
 	int (*after_sampling)(struct damon_ctx *context);
 	int (*after_aggregation)(struct damon_ctx *context);
-	int (*before_terminate)(struct damon_ctx *context);
+	void (*before_terminate)(struct damon_ctx *context);
 };
 
 /**
@@ -146,15 +374,15 @@ struct damon_callback {
  *
  * @sample_interval:		The time between access samplings.
  * @aggr_interval:		The time between monitor results aggregations.
- * @primitive_update_interval:	The time between monitoring primitive updates.
+ * @ops_update_interval:	The time between monitoring operations updates.
  *
  * For each @sample_interval, DAMON checks whether each region is accessed or
  * not.  It aggregates and keeps the access information (number of accesses to
  * each region) for @aggr_interval time.  DAMON also checks whether the target
  * memory regions need update (e.g., by ``mmap()`` calls from the application,
  * in case of virtual memory monitoring) and applies the changes for each
- * @primitive_update_interval.  All time intervals are in micro-seconds.
- * Please refer to &struct damon_primitive and &struct damon_callback for more
+ * @ops_update_interval.  All time intervals are in micro-seconds.
+ * Please refer to &struct damon_operations and &struct damon_callback for more
  * detail.
  *
  * @kdamond:		Kernel thread who does the monitoring.
@@ -166,7 +394,7 @@ struct damon_callback {
  *
  * Once started, the monitoring thread runs until explicitly required to be
  * terminated or every monitoring target is invalid.  The validity of the
- * targets is checked via the &damon_primitive.target_valid of @primitive.  The
+ * targets is checked via the &damon_operations.target_valid of @ops.  The
  * termination can also be explicitly requested by writing non-zero to
  * @kdamond_stop.  The thread sets @kdamond to NULL when it terminates.
  * Therefore, users can know whether the monitoring is ongoing or terminated by
@@ -176,40 +404,50 @@ struct damon_callback {
  * Note that the monitoring thread protects only @kdamond and @kdamond_stop via
  * @kdamond_lock.  Accesses to other fields must be protected by themselves.
  *
- * @primitive:	Set of monitoring primitives for given use cases.
+ * @ops:	Set of monitoring operations for given use cases.
  * @callback:	Set of callbacks for monitoring events notifications.
  *
  * @min_nr_regions:	The minimum number of adaptive monitoring regions.
  * @max_nr_regions:	The maximum number of adaptive monitoring regions.
  * @adaptive_targets:	Head of monitoring targets (&damon_target) list.
+ * @schemes:		Head of schemes (&damos) list.
  */
 struct damon_ctx {
 	unsigned long sample_interval;
 	unsigned long aggr_interval;
-	unsigned long primitive_update_interval;
+	unsigned long ops_update_interval;
 
 /* private: internal use only */
 	struct timespec64 last_aggregation;
-	struct timespec64 last_primitive_update;
+	struct timespec64 last_ops_update;
 
 /* public: */
 	struct task_struct *kdamond;
-	bool kdamond_stop;
 	struct mutex kdamond_lock;
 
-	struct damon_primitive primitive;
+	struct damon_operations ops;
 	struct damon_callback callback;
 
 	unsigned long min_nr_regions;
 	unsigned long max_nr_regions;
 	struct list_head adaptive_targets;
+	struct list_head schemes;
 };
 
-#define damon_next_region(r) \
-	(container_of(r->list.next, struct damon_region, list))
+static inline struct damon_region *damon_next_region(struct damon_region *r)
+{
+	return container_of(r->list.next, struct damon_region, list);
+}
+
+static inline struct damon_region *damon_prev_region(struct damon_region *r)
+{
+	return container_of(r->list.prev, struct damon_region, list);
+}
 
-#define damon_prev_region(r) \
-	(container_of(r->list.prev, struct damon_region, list))
+static inline struct damon_region *damon_last_region(struct damon_target *t)
+{
+	return list_last_entry(&t->regions_list, struct damon_region, list);
+}
 
 #define damon_for_each_region(r, t) \
 	list_for_each_entry(r, &t->regions_list, list)
@@ -223,46 +461,60 @@ struct damon_ctx {
 #define damon_for_each_target_safe(t, next, ctx)	\
 	list_for_each_entry_safe(t, next, &(ctx)->adaptive_targets, list)
 
+#define damon_for_each_scheme(s, ctx) \
+	list_for_each_entry(s, &(ctx)->schemes, list)
+
+#define damon_for_each_scheme_safe(s, next, ctx) \
+	list_for_each_entry_safe(s, next, &(ctx)->schemes, list)
+
 #ifdef CONFIG_DAMON
 
 struct damon_region *damon_new_region(unsigned long start, unsigned long end);
-inline void damon_insert_region(struct damon_region *r,
+
+/*
+ * Add a region between two other regions
+ */
+static inline void damon_insert_region(struct damon_region *r,
 		struct damon_region *prev, struct damon_region *next,
-		struct damon_target *t);
+		struct damon_target *t)
+{
+	__list_add(&r->list, &prev->list, &next->list);
+	t->nr_regions++;
+}
+
 void damon_add_region(struct damon_region *r, struct damon_target *t);
 void damon_destroy_region(struct damon_region *r, struct damon_target *t);
 
-struct damon_target *damon_new_target(unsigned long id);
+struct damos *damon_new_scheme(
+		unsigned long min_sz_region, unsigned long max_sz_region,
+		unsigned int min_nr_accesses, unsigned int max_nr_accesses,
+		unsigned int min_age_region, unsigned int max_age_region,
+		enum damos_action action, struct damos_quota *quota,
+		struct damos_watermarks *wmarks);
+void damon_add_scheme(struct damon_ctx *ctx, struct damos *s);
+void damon_destroy_scheme(struct damos *s);
+
+struct damon_target *damon_new_target(void);
 void damon_add_target(struct damon_ctx *ctx, struct damon_target *t);
+bool damon_targets_empty(struct damon_ctx *ctx);
 void damon_free_target(struct damon_target *t);
 void damon_destroy_target(struct damon_target *t);
 unsigned int damon_nr_regions(struct damon_target *t);
 
 struct damon_ctx *damon_new_ctx(void);
 void damon_destroy_ctx(struct damon_ctx *ctx);
-int damon_set_targets(struct damon_ctx *ctx,
-		unsigned long *ids, ssize_t nr_ids);
 int damon_set_attrs(struct damon_ctx *ctx, unsigned long sample_int,
-		unsigned long aggr_int, unsigned long primitive_upd_int,
+		unsigned long aggr_int, unsigned long ops_upd_int,
 		unsigned long min_nr_reg, unsigned long max_nr_reg);
+int damon_set_schemes(struct damon_ctx *ctx,
+			struct damos **schemes, ssize_t nr_schemes);
 int damon_nr_running_ctxs(void);
+int damon_register_ops(struct damon_operations *ops);
+int damon_select_ops(struct damon_ctx *ctx, enum damon_ops_id id);
 
-int damon_start(struct damon_ctx **ctxs, int nr_ctxs);
+int damon_start(struct damon_ctx **ctxs, int nr_ctxs, bool exclusive);
 int damon_stop(struct damon_ctx **ctxs, int nr_ctxs);
 
 #endif	/* CONFIG_DAMON */
 
-#ifdef CONFIG_DAMON_VADDR
-
-/* Monitoring primitives for virtual memory address spaces */
-void damon_va_init(struct damon_ctx *ctx);
-void damon_va_update(struct damon_ctx *ctx);
-void damon_va_prepare_access_checks(struct damon_ctx *ctx);
-unsigned int damon_va_check_accesses(struct damon_ctx *ctx);
-bool damon_va_target_valid(void *t);
-void damon_va_cleanup(struct damon_ctx *ctx);
-void damon_va_set_primitives(struct damon_ctx *ctx);
-
-#endif	/* CONFIG_DAMON_VADDR */
-
 #endif	/* _DAMON_H */
diff --git a/include/linux/dax.h b/include/linux/dax.h
index 2619d94c308d..9fc5f99a0ae2 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -6,14 +6,14 @@
 #include <linux/mm.h>
 #include <linux/radix-tree.h>
 
-/* Flag for synchronous flush */
-#define DAXDEV_F_SYNC (1UL << 0)
-
 typedef unsigned long dax_entry_t;
 
+struct dax_device;
+struct gendisk;
 struct iomap_ops;
+struct iomap_iter;
 struct iomap;
-struct dax_device;
+
 struct dax_operations {
 	/*
 	 * direct_access: translate a device-relative
@@ -28,35 +28,18 @@ struct dax_operations {
 	 */
 	bool (*dax_supported)(struct dax_device *, struct block_device *, int,
 			sector_t, sector_t);
-	/* copy_from_iter: required operation for fs-dax direct-i/o */
-	size_t (*copy_from_iter)(struct dax_device *, pgoff_t, void *, size_t,
-			struct iov_iter *);
-	/* copy_to_iter: required operation for fs-dax direct-i/o */
-	size_t (*copy_to_iter)(struct dax_device *, pgoff_t, void *, size_t,
-			struct iov_iter *);
 	/* zero_page_range: required operation. Zero page range   */
 	int (*zero_page_range)(struct dax_device *, pgoff_t, size_t);
 };
 
-extern struct attribute_group dax_attribute_group;
-
 #if IS_ENABLED(CONFIG_DAX)
-struct dax_device *alloc_dax(void *private, const char *host,
-		const struct dax_operations *ops, unsigned long flags);
+struct dax_device *alloc_dax(void *private, const struct dax_operations *ops);
 void put_dax(struct dax_device *dax_dev);
 void kill_dax(struct dax_device *dax_dev);
 void dax_write_cache(struct dax_device *dax_dev, bool wc);
 bool dax_write_cache_enabled(struct dax_device *dax_dev);
-bool __dax_synchronous(struct dax_device *dax_dev);
-static inline bool dax_synchronous(struct dax_device *dax_dev)
-{
-	return  __dax_synchronous(dax_dev);
-}
-void __set_dax_synchronous(struct dax_device *dax_dev);
-static inline void set_dax_synchronous(struct dax_device *dax_dev)
-{
-	__set_dax_synchronous(dax_dev);
-}
+bool dax_synchronous(struct dax_device *dax_dev);
+void set_dax_synchronous(struct dax_device *dax_dev);
 /*
  * Check if given mapping is supported by the file / underlying device.
  */
@@ -70,8 +53,8 @@ static inline bool daxdev_mapping_supported(struct vm_area_struct *vma,
 	return dax_synchronous(dax_dev);
 }
 #else
-static inline struct dax_device *alloc_dax(void *private, const char *host,
-		const struct dax_operations *ops, unsigned long flags)
+static inline struct dax_device *alloc_dax(void *private,
+		const struct dax_operations *ops)
 {
 	/*
 	 * Callers should check IS_ENABLED(CONFIG_DAX) to know if this
@@ -106,48 +89,46 @@ static inline bool daxdev_mapping_supported(struct vm_area_struct *vma,
 }
 #endif
 
-struct writeback_control;
-int bdev_dax_pgoff(struct block_device *, sector_t, size_t, pgoff_t *pgoff);
-#if IS_ENABLED(CONFIG_FS_DAX)
-bool generic_fsdax_supported(struct dax_device *dax_dev,
-		struct block_device *bdev, int blocksize, sector_t start,
-		sector_t sectors);
-
-bool dax_supported(struct dax_device *dax_dev, struct block_device *bdev,
-		int blocksize, sector_t start, sector_t len);
+void set_dax_nocache(struct dax_device *dax_dev);
+void set_dax_nomc(struct dax_device *dax_dev);
 
+struct writeback_control;
+#if defined(CONFIG_BLOCK) && defined(CONFIG_FS_DAX)
+int dax_add_host(struct dax_device *dax_dev, struct gendisk *disk);
+void dax_remove_host(struct gendisk *disk);
+struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev,
+		u64 *start_off);
 static inline void fs_put_dax(struct dax_device *dax_dev)
 {
 	put_dax(dax_dev);
 }
-
-struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev);
-int dax_writeback_mapping_range(struct address_space *mapping,
-		struct dax_device *dax_dev, struct writeback_control *wbc);
-
-struct page *dax_layout_busy_page(struct address_space *mapping);
-struct page *dax_layout_busy_page_range(struct address_space *mapping, loff_t start, loff_t end);
-dax_entry_t dax_lock_page(struct page *page);
-void dax_unlock_page(struct page *page, dax_entry_t cookie);
 #else
-#define generic_fsdax_supported		NULL
-
-static inline bool dax_supported(struct dax_device *dax_dev,
-		struct block_device *bdev, int blocksize, sector_t start,
-		sector_t len)
+static inline int dax_add_host(struct dax_device *dax_dev, struct gendisk *disk)
 {
-	return false;
+	return 0;
 }
-
-static inline void fs_put_dax(struct dax_device *dax_dev)
+static inline void dax_remove_host(struct gendisk *disk)
 {
 }
-
-static inline struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev)
+static inline struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev,
+		u64 *start_off)
 {
 	return NULL;
 }
+static inline void fs_put_dax(struct dax_device *dax_dev)
+{
+}
+#endif /* CONFIG_BLOCK && CONFIG_FS_DAX */
+
+#if IS_ENABLED(CONFIG_FS_DAX)
+int dax_writeback_mapping_range(struct address_space *mapping,
+		struct dax_device *dax_dev, struct writeback_control *wbc);
 
+struct page *dax_layout_busy_page(struct address_space *mapping);
+struct page *dax_layout_busy_page_range(struct address_space *mapping, loff_t start, loff_t end);
+dax_entry_t dax_lock_page(struct page *page);
+void dax_unlock_page(struct page *page, dax_entry_t cookie);
+#else
 static inline struct page *dax_layout_busy_page(struct address_space *mapping)
 {
 	return NULL;
@@ -176,6 +157,11 @@ static inline void dax_unlock_page(struct page *page, dax_entry_t cookie)
 }
 #endif
 
+int dax_zero_range(struct inode *inode, loff_t pos, loff_t len, bool *did_zero,
+		const struct iomap_ops *ops);
+int dax_truncate_page(struct inode *inode, loff_t pos, bool *did_zero,
+		const struct iomap_ops *ops);
+
 #if IS_ENABLED(CONFIG_DAX)
 int dax_read_lock(void);
 void dax_read_unlock(int id);
@@ -210,7 +196,6 @@ vm_fault_t dax_finish_sync_fault(struct vm_fault *vmf,
 int dax_delete_mapping_entry(struct address_space *mapping, pgoff_t index);
 int dax_invalidate_mapping_entry_sync(struct address_space *mapping,
 				      pgoff_t index);
-s64 dax_iomap_zero(loff_t pos, u64 length, struct iomap *iomap);
 static inline bool dax_mapping(struct address_space *mapping)
 {
 	return mapping->host && IS_DAX(mapping->host);
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 9e23d33bb6f1..f5bba51480b2 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -61,16 +61,6 @@ extern const struct qstr empty_name;
 extern const struct qstr slash_name;
 extern const struct qstr dotdot_name;
 
-struct dentry_stat_t {
-	long nr_dentry;
-	long nr_unused;
-	long age_limit;		/* age in seconds */
-	long want_pages;	/* pages requested by system */
-	long nr_negative;	/* # of unused negative dentries */
-	long dummy;		/* Reserved for future use */
-};
-extern struct dentry_stat_t dentry_stat;
-
 /*
  * Try to keep struct dentry aligned on 64 byte cachelines (this will
  * give reasonable cacheline footprint with larger lines without the
diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h
index 3f49e65169c6..dbb409d77d4f 100644
--- a/include/linux/debug_locks.h
+++ b/include/linux/debug_locks.h
@@ -47,8 +47,6 @@ extern int debug_locks_off(void);
 # define locking_selftest()	do { } while (0)
 #endif
 
-struct task_struct;
-
 #ifdef CONFIG_LOCKDEP
 extern void debug_show_all_locks(void);
 extern void debug_show_held_locks(struct task_struct *task);
diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h
index 868e9eacd69e..9192986b1a73 100644
--- a/include/linux/decompress/mm.h
+++ b/include/linux/decompress/mm.h
@@ -25,13 +25,21 @@
 #define STATIC_RW_DATA static
 #endif
 
+/*
+ * When an architecture needs to share the malloc()/free() implementation
+ * between compilation units, it needs to have non-local visibility.
+ */
+#ifndef MALLOC_VISIBLE
+#define MALLOC_VISIBLE static
+#endif
+
 /* A trivial malloc implementation, adapted from
  *  malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
  */
 STATIC_RW_DATA unsigned long malloc_ptr;
 STATIC_RW_DATA int malloc_count;
 
-static void *malloc(int size)
+MALLOC_VISIBLE void *malloc(int size)
 {
 	void *p;
 
@@ -52,7 +60,7 @@ static void *malloc(int size)
 	return p;
 }
 
-static void free(void *where)
+MALLOC_VISIBLE void free(void *where)
 {
 	malloc_count--;
 	if (!malloc_count)
diff --git a/include/linux/delay.h b/include/linux/delay.h
index 1d0e2ce6b6d9..039e7e0c7378 100644
--- a/include/linux/delay.h
+++ b/include/linux/delay.h
@@ -19,7 +19,8 @@
  *   https://lists.openwall.net/linux-kernel/2011/01/09/56
  */
 
-#include <linux/kernel.h>
+#include <linux/math.h>
+#include <linux/sched.h>
 
 extern unsigned long loops_per_jiffy;
 
@@ -58,7 +59,18 @@ void calibrate_delay(void);
 void __attribute__((weak)) calibration_delay_done(void);
 void msleep(unsigned int msecs);
 unsigned long msleep_interruptible(unsigned int msecs);
-void usleep_range(unsigned long min, unsigned long max);
+void usleep_range_state(unsigned long min, unsigned long max,
+			unsigned int state);
+
+static inline void usleep_range(unsigned long min, unsigned long max)
+{
+	usleep_range_state(min, max, TASK_UNINTERRUPTIBLE);
+}
+
+static inline void usleep_idle_range(unsigned long min, unsigned long max)
+{
+	usleep_range_state(min, max, TASK_IDLE);
+}
 
 static inline void ssleep(unsigned int seconds)
 {
diff --git a/include/linux/delayacct.h b/include/linux/delayacct.h
index af7e6eb50283..3e03d010bd2e 100644
--- a/include/linux/delayacct.h
+++ b/include/linux/delayacct.h
@@ -9,18 +9,9 @@
 
 #include <uapi/linux/taskstats.h>
 
-/*
- * Per-task flags relevant to delay accounting
- * maintained privately to avoid exhausting similar flags in sched.h:PF_*
- * Used to set current->delays->flags
- */
-#define DELAYACCT_PF_SWAPIN	0x00000001	/* I am doing a swapin */
-#define DELAYACCT_PF_BLKIO	0x00000002	/* I am waiting on IO */
-
 #ifdef CONFIG_TASK_DELAY_ACCT
 struct task_delay_info {
 	raw_spinlock_t	lock;
-	unsigned int	flags;	/* Private per-task flags */
 
 	/* For each stat XXX, add following, aligned appropriately
 	 *
@@ -37,13 +28,13 @@ struct task_delay_info {
 	 * associated with the operation is added to XXX_delay.
 	 * XXX_delay contains the accumulated delay time in nanoseconds.
 	 */
-	u64 blkio_start;	/* Shared by blkio, swapin */
+	u64 blkio_start;
 	u64 blkio_delay;	/* wait for sync block io completion */
-	u64 swapin_delay;	/* wait for swapin block io completion */
+	u64 swapin_start;
+	u64 swapin_delay;	/* wait for swapin */
 	u32 blkio_count;	/* total count of the number of sync block */
 				/* io operations performed */
-	u32 swapin_count;	/* total count of the number of swapin block */
-				/* io operations performed */
+	u32 swapin_count;	/* total count of swapin */
 
 	u64 freepages_start;
 	u64 freepages_delay;	/* wait for memory reclaim */
@@ -51,8 +42,12 @@ struct task_delay_info {
 	u64 thrashing_start;
 	u64 thrashing_delay;	/* wait for thrashing page */
 
+	u64 compact_start;
+	u64 compact_delay;	/* wait for memory compact */
+
 	u32 freepages_count;	/* total count of memory reclaim */
 	u32 thrashing_count;	/* total count of thrash waits */
+	u32 compact_count;	/* total count of memory compact */
 };
 #endif
 
@@ -79,26 +74,10 @@ extern void __delayacct_freepages_start(void);
 extern void __delayacct_freepages_end(void);
 extern void __delayacct_thrashing_start(void);
 extern void __delayacct_thrashing_end(void);
-
-static inline int delayacct_is_task_waiting_on_io(struct task_struct *p)
-{
-	if (p->delays)
-		return (p->delays->flags & DELAYACCT_PF_BLKIO);
-	else
-		return 0;
-}
-
-static inline void delayacct_set_flag(struct task_struct *p, int flag)
-{
-	if (p->delays)
-		p->delays->flags |= flag;
-}
-
-static inline void delayacct_clear_flag(struct task_struct *p, int flag)
-{
-	if (p->delays)
-		p->delays->flags &= ~flag;
-}
+extern void __delayacct_swapin_start(void);
+extern void __delayacct_swapin_end(void);
+extern void __delayacct_compact_start(void);
+extern void __delayacct_compact_end(void);
 
 static inline void delayacct_tsk_init(struct task_struct *tsk)
 {
@@ -123,7 +102,6 @@ static inline void delayacct_blkio_start(void)
 	if (!static_branch_unlikely(&delayacct_key))
 		return;
 
-	delayacct_set_flag(current, DELAYACCT_PF_BLKIO);
 	if (current->delays)
 		__delayacct_blkio_start();
 }
@@ -135,7 +113,6 @@ static inline void delayacct_blkio_end(struct task_struct *p)
 
 	if (p->delays)
 		__delayacct_blkio_end(p);
-	delayacct_clear_flag(p, DELAYACCT_PF_BLKIO);
 }
 
 static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
@@ -147,33 +124,77 @@ static inline __u64 delayacct_blkio_ticks(struct task_struct *tsk)
 
 static inline void delayacct_freepages_start(void)
 {
+	if (!static_branch_unlikely(&delayacct_key))
+		return;
+
 	if (current->delays)
 		__delayacct_freepages_start();
 }
 
 static inline void delayacct_freepages_end(void)
 {
+	if (!static_branch_unlikely(&delayacct_key))
+		return;
+
 	if (current->delays)
 		__delayacct_freepages_end();
 }
 
 static inline void delayacct_thrashing_start(void)
 {
+	if (!static_branch_unlikely(&delayacct_key))
+		return;
+
 	if (current->delays)
 		__delayacct_thrashing_start();
 }
 
 static inline void delayacct_thrashing_end(void)
 {
+	if (!static_branch_unlikely(&delayacct_key))
+		return;
+
 	if (current->delays)
 		__delayacct_thrashing_end();
 }
 
+static inline void delayacct_swapin_start(void)
+{
+	if (!static_branch_unlikely(&delayacct_key))
+		return;
+
+	if (current->delays)
+		__delayacct_swapin_start();
+}
+
+static inline void delayacct_swapin_end(void)
+{
+	if (!static_branch_unlikely(&delayacct_key))
+		return;
+
+	if (current->delays)
+		__delayacct_swapin_end();
+}
+
+static inline void delayacct_compact_start(void)
+{
+	if (!static_branch_unlikely(&delayacct_key))
+		return;
+
+	if (current->delays)
+		__delayacct_compact_start();
+}
+
+static inline void delayacct_compact_end(void)
+{
+	if (!static_branch_unlikely(&delayacct_key))
+		return;
+
+	if (current->delays)
+		__delayacct_compact_end();
+}
+
 #else
-static inline void delayacct_set_flag(struct task_struct *p, int flag)
-{}
-static inline void delayacct_clear_flag(struct task_struct *p, int flag)
-{}
 static inline void delayacct_init(void)
 {}
 static inline void delayacct_tsk_init(struct task_struct *tsk)
@@ -199,6 +220,14 @@ static inline void delayacct_thrashing_start(void)
 {}
 static inline void delayacct_thrashing_end(void)
 {}
+static inline void delayacct_swapin_start(void)
+{}
+static inline void delayacct_swapin_end(void)
+{}
+static inline void delayacct_compact_start(void)
+{}
+static inline void delayacct_compact_end(void)
+{}
 
 #endif /* CONFIG_TASK_DELAY_ACCT */
 
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 114553b487ef..c2a3758c4aaa 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -147,8 +147,6 @@ typedef int (*dm_busy_fn) (struct dm_target *ti);
  */
 typedef long (*dm_dax_direct_access_fn) (struct dm_target *ti, pgoff_t pgoff,
 		long nr_pages, void **kaddr, pfn_t *pfn);
-typedef size_t (*dm_dax_copy_iter_fn)(struct dm_target *ti, pgoff_t pgoff,
-		void *addr, size_t bytes, struct iov_iter *i);
 typedef int (*dm_dax_zero_page_range_fn)(struct dm_target *ti, pgoff_t pgoff,
 		size_t nr_pages);
 
@@ -200,8 +198,6 @@ struct target_type {
 	dm_iterate_devices_fn iterate_devices;
 	dm_io_hints_fn io_hints;
 	dm_dax_direct_access_fn direct_access;
-	dm_dax_copy_iter_fn dax_copy_from_iter;
-	dm_dax_copy_iter_fn dax_copy_to_iter;
 	dm_dax_zero_page_range_fn dax_zero_page_range;
 
 	/* For internal device-mapper use. */
@@ -321,12 +317,6 @@ struct dm_target {
 	unsigned num_secure_erase_bios;
 
 	/*
-	 * The number of WRITE SAME bios that will be submitted to the target.
-	 * The bio number can be accessed with dm_bio_get_target_bio_nr.
-	 */
-	unsigned num_write_same_bios;
-
-	/*
 	 * The number of WRITE ZEROES bios that will be submitted to the target.
 	 * The bio number can be accessed with dm_bio_get_target_bio_nr.
 	 */
@@ -362,10 +352,16 @@ struct dm_target {
 	bool limit_swap_bios:1;
 
 	/*
-	 * Set if this target implements a a zoned device and needs emulation of
+	 * Set if this target implements a zoned device and needs emulation of
 	 * zone append operations using regular writes.
 	 */
 	bool emulate_zone_append:1;
+
+	/*
+	 * Set if the target will submit IO using dm_submit_bio_remap()
+	 * after returning DM_MAPIO_SUBMITTED from its map function.
+	 */
+	bool accounts_remapped_io:1;
 };
 
 void *dm_per_bio_data(struct bio *bio, size_t data_size);
@@ -469,6 +465,7 @@ int dm_suspended(struct dm_target *ti);
 int dm_post_suspending(struct dm_target *ti);
 int dm_noflush_suspending(struct dm_target *ti);
 void dm_accept_partial_bio(struct bio *bio, unsigned n_sectors);
+void dm_submit_bio_remap(struct bio *clone, struct bio *tgt_clone);
 union map_info *dm_get_rq_mapinfo(struct request *rq);
 
 #ifdef CONFIG_BLK_DEV_ZONED
@@ -576,9 +573,9 @@ struct dm_table *dm_swap_table(struct mapped_device *md,
 			       struct dm_table *t);
 
 /*
- * Table keyslot manager functions
+ * Table blk_crypto_profile functions
  */
-void dm_destroy_keyslot_manager(struct blk_keyslot_manager *ksm);
+void dm_destroy_crypto_profile(struct blk_crypto_profile *profile);
 
 /*-----------------------------------------------------------------
  * Macros.
diff --git a/include/linux/device.h b/include/linux/device.h
index e270cb740b9e..93459724dcde 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -45,6 +45,7 @@ struct iommu_ops;
 struct iommu_group;
 struct dev_pin_info;
 struct dev_iommu;
+struct msi_device_data;
 
 /**
  * struct subsys_interface - interfaces to device functions
@@ -372,6 +373,20 @@ struct dev_links_info {
 };
 
 /**
+ * struct dev_msi_info - Device data related to MSI
+ * @domain:	The MSI interrupt domain associated to the device
+ * @data:	Pointer to MSI device data
+ */
+struct dev_msi_info {
+#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
+	struct irq_domain	*domain;
+#endif
+#ifdef CONFIG_GENERIC_MSI_IRQ
+	struct msi_device_data	*data;
+#endif
+};
+
+/**
  * struct device - The basic device structure
  * @parent:	The device's "parent" device, the device to which it is attached.
  * 		In most cases, a parent device is some sort of bus or host
@@ -407,9 +422,7 @@ struct dev_links_info {
  * @em_pd:	device's energy model performance domain
  * @pins:	For device pin management.
  *		See Documentation/driver-api/pin-control.rst for details.
- * @msi_lock:	Lock to protect MSI mask cache and mask register
- * @msi_list:	Hosts MSI descriptors
- * @msi_domain: The generic MSI domain this device is using.
+ * @msi:	MSI related data
  * @numa_node:	NUMA node this device is close to.
  * @dma_ops:    DMA mapping operations for this device.
  * @dma_mask:	Dma mask (if dma'ble device).
@@ -501,16 +514,10 @@ struct device {
 	struct em_perf_domain	*em_pd;
 #endif
 
-#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
-	struct irq_domain	*msi_domain;
-#endif
 #ifdef CONFIG_PINCTRL
 	struct dev_pin_info	*pins;
 #endif
-#ifdef CONFIG_GENERIC_MSI_IRQ
-	raw_spinlock_t		msi_lock;
-	struct list_head	msi_list;
-#endif
+	struct dev_msi_info	msi;
 #ifdef CONFIG_DMA_OPS
 	const struct dma_map_ops *dma_ops;
 #endif
@@ -668,7 +675,7 @@ static inline void set_dev_node(struct device *dev, int node)
 static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)
 {
 #ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
-	return dev->msi_domain;
+	return dev->msi.domain;
 #else
 	return NULL;
 #endif
@@ -677,7 +684,7 @@ static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)
 static inline void dev_set_msi_domain(struct device *dev, struct irq_domain *d)
 {
 #ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
-	dev->msi_domain = d;
+	dev->msi.domain = d;
 #endif
 }
 
diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h
index 062777a45a74..a039ab809753 100644
--- a/include/linux/device/bus.h
+++ b/include/linux/device/bus.h
@@ -143,6 +143,7 @@ int device_match_of_node(struct device *dev, const void *np);
 int device_match_fwnode(struct device *dev, const void *fwnode);
 int device_match_devt(struct device *dev, const void *pdevt);
 int device_match_acpi_dev(struct device *dev, const void *adev);
+int device_match_acpi_handle(struct device *dev, const void *handle);
 int device_match_any(struct device *dev, const void *unused);
 
 /* iterator helpers for buses */
diff --git a/include/linux/device/driver.h b/include/linux/device/driver.h
index a498ebcf4993..15e7c5e15d62 100644
--- a/include/linux/device/driver.h
+++ b/include/linux/device/driver.h
@@ -18,6 +18,7 @@
 #include <linux/klist.h>
 #include <linux/pm.h>
 #include <linux/device/bus.h>
+#include <linux/module.h>
 
 /**
  * enum probe_type - device driver probe type to try
diff --git a/include/linux/dma-buf-map.h b/include/linux/dma-buf-map.h
deleted file mode 100644
index 278d489e4bdd..000000000000
--- a/include/linux/dma-buf-map.h
+++ /dev/null
@@ -1,266 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Pointer to dma-buf-mapped memory, plus helpers.
- */
-
-#ifndef __DMA_BUF_MAP_H__
-#define __DMA_BUF_MAP_H__
-
-#include <linux/io.h>
-#include <linux/string.h>
-
-/**
- * DOC: overview
- *
- * Calling dma-buf's vmap operation returns a pointer to the buffer's memory.
- * Depending on the location of the buffer, users may have to access it with
- * I/O operations or memory load/store operations. For example, copying to
- * system memory could be done with memcpy(), copying to I/O memory would be
- * done with memcpy_toio().
- *
- * .. code-block:: c
- *
- *	void *vaddr = ...; // pointer to system memory
- *	memcpy(vaddr, src, len);
- *
- *	void *vaddr_iomem = ...; // pointer to I/O memory
- *	memcpy_toio(vaddr, _iomem, src, len);
- *
- * When using dma-buf's vmap operation, the returned pointer is encoded as
- * :c:type:`struct dma_buf_map <dma_buf_map>`.
- * :c:type:`struct dma_buf_map <dma_buf_map>` stores the buffer's address in
- * system or I/O memory and a flag that signals the required method of
- * accessing the buffer. Use the returned instance and the helper functions
- * to access the buffer's memory in the correct way.
- *
- * The type :c:type:`struct dma_buf_map <dma_buf_map>` and its helpers are
- * actually independent from the dma-buf infrastructure. When sharing buffers
- * among devices, drivers have to know the location of the memory to access
- * the buffers in a safe way. :c:type:`struct dma_buf_map <dma_buf_map>`
- * solves this problem for dma-buf and its users. If other drivers or
- * sub-systems require similar functionality, the type could be generalized
- * and moved to a more prominent header file.
- *
- * Open-coding access to :c:type:`struct dma_buf_map <dma_buf_map>` is
- * considered bad style. Rather then accessing its fields directly, use one
- * of the provided helper functions, or implement your own. For example,
- * instances of :c:type:`struct dma_buf_map <dma_buf_map>` can be initialized
- * statically with DMA_BUF_MAP_INIT_VADDR(), or at runtime with
- * dma_buf_map_set_vaddr(). These helpers will set an address in system memory.
- *
- * .. code-block:: c
- *
- *	struct dma_buf_map map = DMA_BUF_MAP_INIT_VADDR(0xdeadbeaf);
- *
- *	dma_buf_map_set_vaddr(&map. 0xdeadbeaf);
- *
- * To set an address in I/O memory, use dma_buf_map_set_vaddr_iomem().
- *
- * .. code-block:: c
- *
- *	dma_buf_map_set_vaddr_iomem(&map. 0xdeadbeaf);
- *
- * Instances of struct dma_buf_map do not have to be cleaned up, but
- * can be cleared to NULL with dma_buf_map_clear(). Cleared mappings
- * always refer to system memory.
- *
- * .. code-block:: c
- *
- *	dma_buf_map_clear(&map);
- *
- * Test if a mapping is valid with either dma_buf_map_is_set() or
- * dma_buf_map_is_null().
- *
- * .. code-block:: c
- *
- *	if (dma_buf_map_is_set(&map) != dma_buf_map_is_null(&map))
- *		// always true
- *
- * Instances of :c:type:`struct dma_buf_map <dma_buf_map>` can be compared
- * for equality with dma_buf_map_is_equal(). Mappings the point to different
- * memory spaces, system or I/O, are never equal. That's even true if both
- * spaces are located in the same address space, both mappings contain the
- * same address value, or both mappings refer to NULL.
- *
- * .. code-block:: c
- *
- *	struct dma_buf_map sys_map; // refers to system memory
- *	struct dma_buf_map io_map; // refers to I/O memory
- *
- *	if (dma_buf_map_is_equal(&sys_map, &io_map))
- *		// always false
- *
- * A set up instance of struct dma_buf_map can be used to access or manipulate
- * the buffer memory. Depending on the location of the memory, the provided
- * helpers will pick the correct operations. Data can be copied into the memory
- * with dma_buf_map_memcpy_to(). The address can be manipulated with
- * dma_buf_map_incr().
- *
- * .. code-block:: c
- *
- *	const void *src = ...; // source buffer
- *	size_t len = ...; // length of src
- *
- *	dma_buf_map_memcpy_to(&map, src, len);
- *	dma_buf_map_incr(&map, len); // go to first byte after the memcpy
- */
-
-/**
- * struct dma_buf_map - Pointer to vmap'ed dma-buf memory.
- * @vaddr_iomem:	The buffer's address if in I/O memory
- * @vaddr:		The buffer's address if in system memory
- * @is_iomem:		True if the dma-buf memory is located in I/O
- *			memory, or false otherwise.
- */
-struct dma_buf_map {
-	union {
-		void __iomem *vaddr_iomem;
-		void *vaddr;
-	};
-	bool is_iomem;
-};
-
-/**
- * DMA_BUF_MAP_INIT_VADDR - Initializes struct dma_buf_map to an address in system memory
- * @vaddr_:	A system-memory address
- */
-#define DMA_BUF_MAP_INIT_VADDR(vaddr_) \
-	{ \
-		.vaddr = (vaddr_), \
-		.is_iomem = false, \
-	}
-
-/**
- * dma_buf_map_set_vaddr - Sets a dma-buf mapping structure to an address in system memory
- * @map:	The dma-buf mapping structure
- * @vaddr:	A system-memory address
- *
- * Sets the address and clears the I/O-memory flag.
- */
-static inline void dma_buf_map_set_vaddr(struct dma_buf_map *map, void *vaddr)
-{
-	map->vaddr = vaddr;
-	map->is_iomem = false;
-}
-
-/**
- * dma_buf_map_set_vaddr_iomem - Sets a dma-buf mapping structure to an address in I/O memory
- * @map:		The dma-buf mapping structure
- * @vaddr_iomem:	An I/O-memory address
- *
- * Sets the address and the I/O-memory flag.
- */
-static inline void dma_buf_map_set_vaddr_iomem(struct dma_buf_map *map,
-					       void __iomem *vaddr_iomem)
-{
-	map->vaddr_iomem = vaddr_iomem;
-	map->is_iomem = true;
-}
-
-/**
- * dma_buf_map_is_equal - Compares two dma-buf mapping structures for equality
- * @lhs:	The dma-buf mapping structure
- * @rhs:	A dma-buf mapping structure to compare with
- *
- * Two dma-buf mapping structures are equal if they both refer to the same type of memory
- * and to the same address within that memory.
- *
- * Returns:
- * True is both structures are equal, or false otherwise.
- */
-static inline bool dma_buf_map_is_equal(const struct dma_buf_map *lhs,
-					const struct dma_buf_map *rhs)
-{
-	if (lhs->is_iomem != rhs->is_iomem)
-		return false;
-	else if (lhs->is_iomem)
-		return lhs->vaddr_iomem == rhs->vaddr_iomem;
-	else
-		return lhs->vaddr == rhs->vaddr;
-}
-
-/**
- * dma_buf_map_is_null - Tests for a dma-buf mapping to be NULL
- * @map:	The dma-buf mapping structure
- *
- * Depending on the state of struct dma_buf_map.is_iomem, tests if the
- * mapping is NULL.
- *
- * Returns:
- * True if the mapping is NULL, or false otherwise.
- */
-static inline bool dma_buf_map_is_null(const struct dma_buf_map *map)
-{
-	if (map->is_iomem)
-		return !map->vaddr_iomem;
-	return !map->vaddr;
-}
-
-/**
- * dma_buf_map_is_set - Tests is the dma-buf mapping has been set
- * @map:	The dma-buf mapping structure
- *
- * Depending on the state of struct dma_buf_map.is_iomem, tests if the
- * mapping has been set.
- *
- * Returns:
- * True if the mapping is been set, or false otherwise.
- */
-static inline bool dma_buf_map_is_set(const struct dma_buf_map *map)
-{
-	return !dma_buf_map_is_null(map);
-}
-
-/**
- * dma_buf_map_clear - Clears a dma-buf mapping structure
- * @map:	The dma-buf mapping structure
- *
- * Clears all fields to zero; including struct dma_buf_map.is_iomem. So
- * mapping structures that were set to point to I/O memory are reset for
- * system memory. Pointers are cleared to NULL. This is the default.
- */
-static inline void dma_buf_map_clear(struct dma_buf_map *map)
-{
-	if (map->is_iomem) {
-		map->vaddr_iomem = NULL;
-		map->is_iomem = false;
-	} else {
-		map->vaddr = NULL;
-	}
-}
-
-/**
- * dma_buf_map_memcpy_to - Memcpy into dma-buf mapping
- * @dst:	The dma-buf mapping structure
- * @src:	The source buffer
- * @len:	The number of byte in src
- *
- * Copies data into a dma-buf mapping. The source buffer is in system
- * memory. Depending on the buffer's location, the helper picks the correct
- * method of accessing the memory.
- */
-static inline void dma_buf_map_memcpy_to(struct dma_buf_map *dst, const void *src, size_t len)
-{
-	if (dst->is_iomem)
-		memcpy_toio(dst->vaddr_iomem, src, len);
-	else
-		memcpy(dst->vaddr, src, len);
-}
-
-/**
- * dma_buf_map_incr - Increments the address stored in a dma-buf mapping
- * @map:	The dma-buf mapping structure
- * @incr:	The number of bytes to increment
- *
- * Increments the address stored in a dma-buf mapping. Depending on the
- * buffer's location, the correct value will be updated.
- */
-static inline void dma_buf_map_incr(struct dma_buf_map *map, size_t incr)
-{
-	if (map->is_iomem)
-		map->vaddr_iomem += incr;
-	else
-		map->vaddr += incr;
-}
-
-#endif /* __DMA_BUF_MAP_H__ */
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index 8b32b4bdd590..2097760e8e95 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -13,7 +13,7 @@
 #ifndef __DMA_BUF_H__
 #define __DMA_BUF_H__
 
-#include <linux/dma-buf-map.h>
+#include <linux/iosys-map.h>
 #include <linux/file.h>
 #include <linux/err.h>
 #include <linux/scatterlist.h>
@@ -86,8 +86,8 @@ struct dma_buf_ops {
 	 * @pin:
 	 *
 	 * This is called by dma_buf_pin() and lets the exporter know that the
-	 * DMA-buf can't be moved any more. The exporter should pin the buffer
-	 * into system memory to make sure it is generally accessible by other
+	 * DMA-buf can't be moved any more. Ideally, the exporter should
+	 * pin the buffer so that it is generally accessible by all
 	 * devices.
 	 *
 	 * This is called with the &dmabuf.resv object locked and is mutual
@@ -283,8 +283,8 @@ struct dma_buf_ops {
 	 */
 	int (*mmap)(struct dma_buf *, struct vm_area_struct *vma);
 
-	int (*vmap)(struct dma_buf *dmabuf, struct dma_buf_map *map);
-	void (*vunmap)(struct dma_buf *dmabuf, struct dma_buf_map *map);
+	int (*vmap)(struct dma_buf *dmabuf, struct iosys_map *map);
+	void (*vunmap)(struct dma_buf *dmabuf, struct iosys_map *map);
 };
 
 /**
@@ -347,7 +347,7 @@ struct dma_buf {
 	 * @vmap_ptr:
 	 * The current vmap ptr if @vmapping_counter > 0. Protected by @lock.
 	 */
-	struct dma_buf_map vmap_ptr;
+	struct iosys_map vmap_ptr;
 
 	/**
 	 * @exp_name:
@@ -420,20 +420,27 @@ struct dma_buf {
 	 * - Dynamic importers should set fences for any access that they can't
 	 *   disable immediately from their &dma_buf_attach_ops.move_notify
 	 *   callback.
+	 *
+	 * IMPORTANT:
+	 *
+	 * All drivers must obey the struct dma_resv rules, specifically the
+	 * rules for updating fences, see &dma_resv.fence_excl and
+	 * &dma_resv.fence. If these dependency rules are broken access tracking
+	 * can be lost resulting in use after free issues.
 	 */
 	struct dma_resv *resv;
 
 	/** @poll: for userspace poll support */
 	wait_queue_head_t poll;
 
-	/** @cb_excl: for userspace poll support */
-	/** @cb_shared: for userspace poll support */
+	/** @cb_in: for userspace poll support */
+	/** @cb_out: for userspace poll support */
 	struct dma_buf_poll_cb_t {
 		struct dma_fence_cb cb;
 		wait_queue_head_t *poll;
 
 		__poll_t active;
-	} cb_excl, cb_shared;
+	} cb_in, cb_out;
 #ifdef CONFIG_DMABUF_SYSFS_STATS
 	/**
 	 * @sysfs_entry:
@@ -621,6 +628,6 @@ int dma_buf_end_cpu_access(struct dma_buf *dma_buf,
 
 int dma_buf_mmap(struct dma_buf *, struct vm_area_struct *,
 		 unsigned long);
-int dma_buf_vmap(struct dma_buf *dmabuf, struct dma_buf_map *map);
-void dma_buf_vunmap(struct dma_buf *dmabuf, struct dma_buf_map *map);
+int dma_buf_vmap(struct dma_buf *dmabuf, struct iosys_map *map);
+void dma_buf_vunmap(struct dma_buf *dmabuf, struct iosys_map *map);
 #endif /* __DMA_BUF_H__ */
diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h
index 303dd712220f..ec7f25def392 100644
--- a/include/linux/dma-fence-array.h
+++ b/include/linux/dma-fence-array.h
@@ -45,19 +45,6 @@ struct dma_fence_array {
 	struct irq_work work;
 };
 
-extern const struct dma_fence_ops dma_fence_array_ops;
-
-/**
- * dma_fence_is_array - check if a fence is from the array subsclass
- * @fence: fence to test
- *
- * Return true if it is a dma_fence_array and false otherwise.
- */
-static inline bool dma_fence_is_array(struct dma_fence *fence)
-{
-	return fence->ops == &dma_fence_array_ops;
-}
-
 /**
  * to_dma_fence_array - cast a fence to a dma_fence_array
  * @fence: fence to cast to a dma_fence_array
@@ -68,12 +55,27 @@ static inline bool dma_fence_is_array(struct dma_fence *fence)
 static inline struct dma_fence_array *
 to_dma_fence_array(struct dma_fence *fence)
 {
-	if (fence->ops != &dma_fence_array_ops)
+	if (!fence || !dma_fence_is_array(fence))
 		return NULL;
 
 	return container_of(fence, struct dma_fence_array, base);
 }
 
+/**
+ * dma_fence_array_for_each - iterate over all fences in array
+ * @fence: current fence
+ * @index: index into the array
+ * @head: potential dma_fence_array object
+ *
+ * Test if @array is a dma_fence_array object and if yes iterate over all fences
+ * in the array. If not just iterate over the fence in @array itself.
+ *
+ * For a deep dive iterator see dma_fence_unwrap_for_each().
+ */
+#define dma_fence_array_for_each(fence, index, head)			\
+	for (index = 0, fence = dma_fence_array_first(head); fence;	\
+	     ++(index), fence = dma_fence_array_next(head, index))
+
 struct dma_fence_array *dma_fence_array_create(int num_fences,
 					       struct dma_fence **fences,
 					       u64 context, unsigned seqno,
@@ -81,4 +83,8 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
 
 bool dma_fence_match_context(struct dma_fence *fence, u64 context);
 
+struct dma_fence *dma_fence_array_first(struct dma_fence *head);
+struct dma_fence *dma_fence_array_next(struct dma_fence *head,
+				       unsigned int index);
+
 #endif /* __LINUX_DMA_FENCE_ARRAY_H */
diff --git a/include/linux/dma-fence-chain.h b/include/linux/dma-fence-chain.h
index 54fe3443fd2c..4bdf0b96da28 100644
--- a/include/linux/dma-fence-chain.h
+++ b/include/linux/dma-fence-chain.h
@@ -49,7 +49,6 @@ struct dma_fence_chain {
 	spinlock_t lock;
 };
 
-extern const struct dma_fence_ops dma_fence_chain_ops;
 
 /**
  * to_dma_fence_chain - cast a fence to a dma_fence_chain
@@ -61,13 +60,28 @@ extern const struct dma_fence_ops dma_fence_chain_ops;
 static inline struct dma_fence_chain *
 to_dma_fence_chain(struct dma_fence *fence)
 {
-	if (!fence || fence->ops != &dma_fence_chain_ops)
+	if (!fence || !dma_fence_is_chain(fence))
 		return NULL;
 
 	return container_of(fence, struct dma_fence_chain, base);
 }
 
 /**
+ * dma_fence_chain_contained - return the contained fence
+ * @fence: the fence to test
+ *
+ * If the fence is a dma_fence_chain the function returns the fence contained
+ * inside the chain object, otherwise it returns the fence itself.
+ */
+static inline struct dma_fence *
+dma_fence_chain_contained(struct dma_fence *fence)
+{
+	struct dma_fence_chain *chain = to_dma_fence_chain(fence);
+
+	return chain ? chain->fence : fence;
+}
+
+/**
  * dma_fence_chain_alloc
  *
  * Returns a new struct dma_fence_chain object or NULL on failure.
@@ -98,6 +112,8 @@ static inline void dma_fence_chain_free(struct dma_fence_chain *chain)
  *
  * Iterate over all fences in the chain. We keep a reference to the current
  * fence while inside the loop which must be dropped when breaking out.
+ *
+ * For a deep dive iterator see dma_fence_unwrap_for_each().
  */
 #define dma_fence_chain_for_each(iter, head)	\
 	for (iter = dma_fence_get(head); iter; \
diff --git a/include/linux/dma-fence-unwrap.h b/include/linux/dma-fence-unwrap.h
new file mode 100644
index 000000000000..77e335a1bcac
--- /dev/null
+++ b/include/linux/dma-fence-unwrap.h
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * fence-chain: chain fences together in a timeline
+ *
+ * Copyright (C) 2022 Advanced Micro Devices, Inc.
+ * Authors:
+ *	Christian König <christian.koenig@amd.com>
+ */
+
+#ifndef __LINUX_DMA_FENCE_UNWRAP_H
+#define __LINUX_DMA_FENCE_UNWRAP_H
+
+#include <linux/dma-fence-chain.h>
+#include <linux/dma-fence-array.h>
+
+/**
+ * struct dma_fence_unwrap - cursor into the container structure
+ *
+ * Should be used with dma_fence_unwrap_for_each() iterator macro.
+ */
+struct dma_fence_unwrap {
+	/**
+	 * @chain: potential dma_fence_chain, but can be other fence as well
+	 */
+	struct dma_fence *chain;
+	/**
+	 * @array: potential dma_fence_array, but can be other fence as well
+	 */
+	struct dma_fence *array;
+	/**
+	 * @index: last returned index if @array is really a dma_fence_array
+	 */
+	unsigned int index;
+};
+
+/* Internal helper to start new array iteration, don't use directly */
+static inline struct dma_fence *
+__dma_fence_unwrap_array(struct dma_fence_unwrap * cursor)
+{
+	cursor->array = dma_fence_chain_contained(cursor->chain);
+	cursor->index = 0;
+	return dma_fence_array_first(cursor->array);
+}
+
+/**
+ * dma_fence_unwrap_first - return the first fence from fence containers
+ * @head: the entrypoint into the containers
+ * @cursor: current position inside the containers
+ *
+ * Unwraps potential dma_fence_chain/dma_fence_array containers and return the
+ * first fence.
+ */
+static inline struct dma_fence *
+dma_fence_unwrap_first(struct dma_fence *head, struct dma_fence_unwrap *cursor)
+{
+	cursor->chain = dma_fence_get(head);
+	return __dma_fence_unwrap_array(cursor);
+}
+
+/**
+ * dma_fence_unwrap_next - return the next fence from a fence containers
+ * @cursor: current position inside the containers
+ *
+ * Continue unwrapping the dma_fence_chain/dma_fence_array containers and return
+ * the next fence from them.
+ */
+static inline struct dma_fence *
+dma_fence_unwrap_next(struct dma_fence_unwrap *cursor)
+{
+	struct dma_fence *tmp;
+
+	++cursor->index;
+	tmp = dma_fence_array_next(cursor->array, cursor->index);
+	if (tmp)
+		return tmp;
+
+	cursor->chain = dma_fence_chain_walk(cursor->chain);
+	return __dma_fence_unwrap_array(cursor);
+}
+
+/**
+ * dma_fence_unwrap_for_each - iterate over all fences in containers
+ * @fence: current fence
+ * @cursor: current position inside the containers
+ * @head: starting point for the iterator
+ *
+ * Unwrap dma_fence_chain and dma_fence_array containers and deep dive into all
+ * potential fences in them. If @head is just a normal fence only that one is
+ * returned.
+ */
+#define dma_fence_unwrap_for_each(fence, cursor, head)			\
+	for (fence = dma_fence_unwrap_first(head, cursor); fence;	\
+	     fence = dma_fence_unwrap_next(cursor))
+
+#endif
diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h
index 6ffb4b2c6371..775cdc0b4f24 100644
--- a/include/linux/dma-fence.h
+++ b/include/linux/dma-fence.h
@@ -214,19 +214,15 @@ struct dma_fence_ops {
 	 * Custom wait implementation, defaults to dma_fence_default_wait() if
 	 * not set.
 	 *
-	 * The dma_fence_default_wait implementation should work for any fence, as long
-	 * as @enable_signaling works correctly. This hook allows drivers to
-	 * have an optimized version for the case where a process context is
-	 * already available, e.g. if @enable_signaling for the general case
-	 * needs to set up a worker thread.
+	 * Deprecated and should not be used by new implementations. Only used
+	 * by existing implementations which need special handling for their
+	 * hardware reset procedure.
 	 *
 	 * Must return -ERESTARTSYS if the wait is intr = true and the wait was
 	 * interrupted, and remaining jiffies if fence has signaled, or 0 if wait
 	 * timed out. Can also return other error values on custom implementations,
 	 * which should be treated as if the fence is signaled. For example a hardware
 	 * lockup could be reported like that.
-	 *
-	 * This callback is optional.
 	 */
 	signed long (*wait)(struct dma_fence *fence,
 			    bool intr, signed long timeout);
@@ -268,6 +264,7 @@ void dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops,
 
 void dma_fence_release(struct kref *kref);
 void dma_fence_free(struct dma_fence *fence);
+void dma_fence_describe(struct dma_fence *fence, struct seq_file *seq);
 
 /**
  * dma_fence_put - decreases refcount of the fence
@@ -590,26 +587,42 @@ struct dma_fence *dma_fence_get_stub(void);
 struct dma_fence *dma_fence_allocate_private_stub(void);
 u64 dma_fence_context_alloc(unsigned num);
 
-#define DMA_FENCE_TRACE(f, fmt, args...) \
-	do {								\
-		struct dma_fence *__ff = (f);				\
-		if (IS_ENABLED(CONFIG_DMA_FENCE_TRACE))			\
-			pr_info("f %llu#%llu: " fmt,			\
-				__ff->context, __ff->seqno, ##args);	\
-	} while (0)
-
-#define DMA_FENCE_WARN(f, fmt, args...) \
-	do {								\
-		struct dma_fence *__ff = (f);				\
-		pr_warn("f %llu#%llu: " fmt, __ff->context, __ff->seqno,\
-			 ##args);					\
-	} while (0)
-
-#define DMA_FENCE_ERR(f, fmt, args...) \
-	do {								\
-		struct dma_fence *__ff = (f);				\
-		pr_err("f %llu#%llu: " fmt, __ff->context, __ff->seqno,	\
-			##args);					\
-	} while (0)
+extern const struct dma_fence_ops dma_fence_array_ops;
+extern const struct dma_fence_ops dma_fence_chain_ops;
+
+/**
+ * dma_fence_is_array - check if a fence is from the array subclass
+ * @fence: the fence to test
+ *
+ * Return true if it is a dma_fence_array and false otherwise.
+ */
+static inline bool dma_fence_is_array(struct dma_fence *fence)
+{
+	return fence->ops == &dma_fence_array_ops;
+}
+
+/**
+ * dma_fence_is_chain - check if a fence is from the chain subclass
+ * @fence: the fence to test
+ *
+ * Return true if it is a dma_fence_chain and false otherwise.
+ */
+static inline bool dma_fence_is_chain(struct dma_fence *fence)
+{
+	return fence->ops == &dma_fence_chain_ops;
+}
+
+/**
+ * dma_fence_is_container - check if a fence is a container for other fences
+ * @fence: the fence to test
+ *
+ * Return true if this fence is a container for other fences, false otherwise.
+ * This is important since we can't build up large fence structure or otherwise
+ * we run into recursion during operation on those fences.
+ */
+static inline bool dma_fence_is_container(struct dma_fence *fence)
+{
+	return dma_fence_is_array(fence) || dma_fence_is_chain(fence);
+}
 
 #endif /* __LINUX_DMA_FENCE_H */
diff --git a/include/linux/dma-resv.h b/include/linux/dma-resv.h
index e1ca2080a1ff..afdfdfac729f 100644
--- a/include/linux/dma-resv.h
+++ b/include/linux/dma-resv.h
@@ -62,19 +62,222 @@ struct dma_resv_list {
 
 /**
  * struct dma_resv - a reservation object manages fences for a buffer
- * @lock: update side lock
- * @seq: sequence count for managing RCU read-side synchronization
- * @fence_excl: the exclusive fence, if there is one currently
- * @fence: list of current shared fences
+ *
+ * There are multiple uses for this, with sometimes slightly different rules in
+ * how the fence slots are used.
+ *
+ * One use is to synchronize cross-driver access to a struct dma_buf, either for
+ * dynamic buffer management or just to handle implicit synchronization between
+ * different users of the buffer in userspace. See &dma_buf.resv for a more
+ * in-depth discussion.
+ *
+ * The other major use is to manage access and locking within a driver in a
+ * buffer based memory manager. struct ttm_buffer_object is the canonical
+ * example here, since this is where reservation objects originated from. But
+ * use in drivers is spreading and some drivers also manage struct
+ * drm_gem_object with the same scheme.
  */
 struct dma_resv {
+	/**
+	 * @lock:
+	 *
+	 * Update side lock. Don't use directly, instead use the wrapper
+	 * functions like dma_resv_lock() and dma_resv_unlock().
+	 *
+	 * Drivers which use the reservation object to manage memory dynamically
+	 * also use this lock to protect buffer object state like placement,
+	 * allocation policies or throughout command submission.
+	 */
 	struct ww_mutex lock;
+
+	/**
+	 * @seq:
+	 *
+	 * Sequence count for managing RCU read-side synchronization, allows
+	 * read-only access to @fence_excl and @fence while ensuring we take a
+	 * consistent snapshot.
+	 */
 	seqcount_ww_mutex_t seq;
 
+	/**
+	 * @fence_excl:
+	 *
+	 * The exclusive fence, if there is one currently.
+	 *
+	 * There are two ways to update this fence:
+	 *
+	 * - First by calling dma_resv_add_excl_fence(), which replaces all
+	 *   fences attached to the reservation object. To guarantee that no
+	 *   fences are lost, this new fence must signal only after all previous
+	 *   fences, both shared and exclusive, have signalled. In some cases it
+	 *   is convenient to achieve that by attaching a struct dma_fence_array
+	 *   with all the new and old fences.
+	 *
+	 * - Alternatively the fence can be set directly, which leaves the
+	 *   shared fences unchanged. To guarantee that no fences are lost, this
+	 *   new fence must signal only after the previous exclusive fence has
+	 *   signalled. Since the shared fences are staying intact, it is not
+	 *   necessary to maintain any ordering against those. If semantically
+	 *   only a new access is added without actually treating the previous
+	 *   one as a dependency the exclusive fences can be strung together
+	 *   using struct dma_fence_chain.
+	 *
+	 * Note that actual semantics of what an exclusive or shared fence mean
+	 * is defined by the user, for reservation objects shared across drivers
+	 * see &dma_buf.resv.
+	 */
 	struct dma_fence __rcu *fence_excl;
+
+	/**
+	 * @fence:
+	 *
+	 * List of current shared fences.
+	 *
+	 * There are no ordering constraints of shared fences against the
+	 * exclusive fence slot. If a waiter needs to wait for all access, it
+	 * has to wait for both sets of fences to signal.
+	 *
+	 * A new fence is added by calling dma_resv_add_shared_fence(). Since
+	 * this often needs to be done past the point of no return in command
+	 * submission it cannot fail, and therefore sufficient slots need to be
+	 * reserved by calling dma_resv_reserve_shared().
+	 *
+	 * Note that actual semantics of what an exclusive or shared fence mean
+	 * is defined by the user, for reservation objects shared across drivers
+	 * see &dma_buf.resv.
+	 */
 	struct dma_resv_list __rcu *fence;
 };
 
+/**
+ * struct dma_resv_iter - current position into the dma_resv fences
+ *
+ * Don't touch this directly in the driver, use the accessor function instead.
+ *
+ * IMPORTANT
+ *
+ * When using the lockless iterators like dma_resv_iter_next_unlocked() or
+ * dma_resv_for_each_fence_unlocked() beware that the iterator can be restarted.
+ * Code which accumulates statistics or similar needs to check for this with
+ * dma_resv_iter_is_restarted().
+ */
+struct dma_resv_iter {
+	/** @obj: The dma_resv object we iterate over */
+	struct dma_resv *obj;
+
+	/** @all_fences: If all fences should be returned */
+	bool all_fences;
+
+	/** @fence: the currently handled fence */
+	struct dma_fence *fence;
+
+	/** @seq: sequence number to check for modifications */
+	unsigned int seq;
+
+	/** @index: index into the shared fences */
+	unsigned int index;
+
+	/** @fences: the shared fences; private, *MUST* not dereference  */
+	struct dma_resv_list *fences;
+
+	/** @shared_count: number of shared fences */
+	unsigned int shared_count;
+
+	/** @is_restarted: true if this is the first returned fence */
+	bool is_restarted;
+};
+
+struct dma_fence *dma_resv_iter_first_unlocked(struct dma_resv_iter *cursor);
+struct dma_fence *dma_resv_iter_next_unlocked(struct dma_resv_iter *cursor);
+struct dma_fence *dma_resv_iter_first(struct dma_resv_iter *cursor);
+struct dma_fence *dma_resv_iter_next(struct dma_resv_iter *cursor);
+
+/**
+ * dma_resv_iter_begin - initialize a dma_resv_iter object
+ * @cursor: The dma_resv_iter object to initialize
+ * @obj: The dma_resv object which we want to iterate over
+ * @all_fences: If all fences should be returned or just the exclusive one
+ */
+static inline void dma_resv_iter_begin(struct dma_resv_iter *cursor,
+				       struct dma_resv *obj,
+				       bool all_fences)
+{
+	cursor->obj = obj;
+	cursor->all_fences = all_fences;
+	cursor->fence = NULL;
+}
+
+/**
+ * dma_resv_iter_end - cleanup a dma_resv_iter object
+ * @cursor: the dma_resv_iter object which should be cleaned up
+ *
+ * Make sure that the reference to the fence in the cursor is properly
+ * dropped.
+ */
+static inline void dma_resv_iter_end(struct dma_resv_iter *cursor)
+{
+	dma_fence_put(cursor->fence);
+}
+
+/**
+ * dma_resv_iter_is_exclusive - test if the current fence is the exclusive one
+ * @cursor: the cursor of the current position
+ *
+ * Returns true if the currently returned fence is the exclusive one.
+ */
+static inline bool dma_resv_iter_is_exclusive(struct dma_resv_iter *cursor)
+{
+	return cursor->index == 0;
+}
+
+/**
+ * dma_resv_iter_is_restarted - test if this is the first fence after a restart
+ * @cursor: the cursor with the current position
+ *
+ * Return true if this is the first fence in an iteration after a restart.
+ */
+static inline bool dma_resv_iter_is_restarted(struct dma_resv_iter *cursor)
+{
+	return cursor->is_restarted;
+}
+
+/**
+ * dma_resv_for_each_fence_unlocked - unlocked fence iterator
+ * @cursor: a struct dma_resv_iter pointer
+ * @fence: the current fence
+ *
+ * Iterate over the fences in a struct dma_resv object without holding the
+ * &dma_resv.lock and using RCU instead. The cursor needs to be initialized
+ * with dma_resv_iter_begin() and cleaned up with dma_resv_iter_end(). Inside
+ * the iterator a reference to the dma_fence is held and the RCU lock dropped.
+ *
+ * Beware that the iterator can be restarted when the struct dma_resv for
+ * @cursor is modified. Code which accumulates statistics or similar needs to
+ * check for this with dma_resv_iter_is_restarted(). For this reason prefer the
+ * lock iterator dma_resv_for_each_fence() whenever possible.
+ */
+#define dma_resv_for_each_fence_unlocked(cursor, fence)			\
+	for (fence = dma_resv_iter_first_unlocked(cursor);		\
+	     fence; fence = dma_resv_iter_next_unlocked(cursor))
+
+/**
+ * dma_resv_for_each_fence - fence iterator
+ * @cursor: a struct dma_resv_iter pointer
+ * @obj: a dma_resv object pointer
+ * @all_fences: true if all fences should be returned
+ * @fence: the current fence
+ *
+ * Iterate over the fences in a struct dma_resv object while holding the
+ * &dma_resv.lock. @all_fences controls if the shared fences are returned as
+ * well. The cursor initialisation is part of the iterator and the fence stays
+ * valid as long as the lock is held and so no extra reference to the fence is
+ * taken.
+ */
+#define dma_resv_for_each_fence(cursor, obj, all_fences, fence)	\
+	for (dma_resv_iter_begin(cursor, obj, all_fences),	\
+	     fence = dma_resv_iter_first(cursor); fence;	\
+	     fence = dma_resv_iter_next(cursor))
+
 #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base)
 #define dma_resv_assert_held(obj) lockdep_assert_held(&(obj)->lock.base)
 
@@ -98,6 +301,13 @@ static inline void dma_resv_reset_shared_max(struct dma_resv *obj) {}
  * undefined order, a #ww_acquire_ctx is passed to unwind if a cycle
  * is detected. See ww_mutex_lock() and ww_acquire_init(). A reservation
  * object may be locked by itself by passing NULL as @ctx.
+ *
+ * When a die situation is indicated by returning -EDEADLK all locks held by
+ * @ctx must be unlocked and then dma_resv_lock_slow() called on @obj.
+ *
+ * Unlocked by calling dma_resv_unlock().
+ *
+ * See also dma_resv_lock_interruptible() for the interruptible variant.
  */
 static inline int dma_resv_lock(struct dma_resv *obj,
 				struct ww_acquire_ctx *ctx)
@@ -119,6 +329,12 @@ static inline int dma_resv_lock(struct dma_resv *obj,
  * undefined order, a #ww_acquire_ctx is passed to unwind if a cycle
  * is detected. See ww_mutex_lock() and ww_acquire_init(). A reservation
  * object may be locked by itself by passing NULL as @ctx.
+ *
+ * When a die situation is indicated by returning -EDEADLK all locks held by
+ * @ctx must be unlocked and then dma_resv_lock_slow_interruptible() called on
+ * @obj.
+ *
+ * Unlocked by calling dma_resv_unlock().
  */
 static inline int dma_resv_lock_interruptible(struct dma_resv *obj,
 					      struct ww_acquire_ctx *ctx)
@@ -134,6 +350,8 @@ static inline int dma_resv_lock_interruptible(struct dma_resv *obj,
  * Acquires the reservation object after a die case. This function
  * will sleep until the lock becomes available. See dma_resv_lock() as
  * well.
+ *
+ * See also dma_resv_lock_slow_interruptible() for the interruptible variant.
  */
 static inline void dma_resv_lock_slow(struct dma_resv *obj,
 				      struct ww_acquire_ctx *ctx)
@@ -167,13 +385,13 @@ static inline int dma_resv_lock_slow_interruptible(struct dma_resv *obj,
  * if they overlap with a writer.
  *
  * Also note that since no context is provided, no deadlock protection is
- * possible.
+ * possible, which is also not needed for a trylock.
  *
  * Returns true if the lock was acquired, false otherwise.
  */
 static inline bool __must_check dma_resv_trylock(struct dma_resv *obj)
 {
-	return ww_mutex_trylock(&obj->lock);
+	return ww_mutex_trylock(&obj->lock, NULL);
 }
 
 /**
@@ -193,6 +411,11 @@ static inline bool dma_resv_is_locked(struct dma_resv *obj)
  *
  * Returns the context used to lock a reservation object or NULL if no context
  * was used or the object is not locked at all.
+ *
+ * WARNING: This interface is pretty horrible, but TTM needs it because it
+ * doesn't pass the struct ww_acquire_ctx around in some very long callchains.
+ * Everyone else just uses it to check whether they're holding a reservation or
+ * not.
  */
 static inline struct ww_acquire_ctx *dma_resv_locking_ctx(struct dma_resv *obj)
 {
@@ -229,32 +452,6 @@ dma_resv_excl_fence(struct dma_resv *obj)
 }
 
 /**
- * dma_resv_get_excl_unlocked - get the reservation object's
- * exclusive fence, without lock held.
- * @obj: the reservation object
- *
- * If there is an exclusive fence, this atomically increments it's
- * reference count and returns it.
- *
- * RETURNS
- * The exclusive fence or NULL if none
- */
-static inline struct dma_fence *
-dma_resv_get_excl_unlocked(struct dma_resv *obj)
-{
-	struct dma_fence *fence;
-
-	if (!rcu_access_pointer(obj->fence_excl))
-		return NULL;
-
-	rcu_read_lock();
-	fence = dma_fence_get_rcu_safe(&obj->fence_excl);
-	rcu_read_unlock();
-
-	return fence;
-}
-
-/**
  * dma_resv_shared_list - get the reservation object's shared fence list
  * @obj: the reservation object
  *
@@ -272,11 +469,12 @@ void dma_resv_fini(struct dma_resv *obj);
 int dma_resv_reserve_shared(struct dma_resv *obj, unsigned int num_fences);
 void dma_resv_add_shared_fence(struct dma_resv *obj, struct dma_fence *fence);
 void dma_resv_add_excl_fence(struct dma_resv *obj, struct dma_fence *fence);
-int dma_resv_get_fences(struct dma_resv *obj, struct dma_fence **pfence_excl,
-			unsigned *pshared_count, struct dma_fence ***pshared);
+int dma_resv_get_fences(struct dma_resv *obj, bool write,
+			unsigned int *num_fences, struct dma_fence ***fences);
 int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src);
 long dma_resv_wait_timeout(struct dma_resv *obj, bool wait_all, bool intr,
 			   unsigned long timeout);
 bool dma_resv_test_signaled(struct dma_resv *obj, bool test_all);
+void dma_resv_describe(struct dma_resv *obj, struct seq_file *seq);
 
 #endif /* _LINUX_RESERVATION_H */
diff --git a/include/linux/dma/qcom_adm.h b/include/linux/dma/qcom_adm.h
new file mode 100644
index 000000000000..af20df674f0c
--- /dev/null
+++ b/include/linux/dma/qcom_adm.h
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#ifndef __LINUX_DMA_QCOM_ADM_H
+#define __LINUX_DMA_QCOM_ADM_H
+
+#include <linux/types.h>
+
+struct qcom_adm_peripheral_config {
+	u32 crci;
+	u32 mux;
+};
+
+#endif /* __LINUX_DMA_QCOM_ADM_H */
diff --git a/include/linux/dma/xilinx_dpdma.h b/include/linux/dma/xilinx_dpdma.h
new file mode 100644
index 000000000000..02a4adf8921b
--- /dev/null
+++ b/include/linux/dma/xilinx_dpdma.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_DMA_XILINX_DPDMA_H
+#define __LINUX_DMA_XILINX_DPDMA_H
+
+#include <linux/types.h>
+
+struct xilinx_dpdma_peripheral_config {
+	bool video_group;
+};
+
+#endif /* __LINUX_DMA_XILINX_DPDMA_H */
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index e5c2c9e71bf1..842d4f7ca752 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -50,6 +50,7 @@ enum dma_status {
  */
 enum dma_transaction_type {
 	DMA_MEMCPY,
+	DMA_MEMCPY_SG,
 	DMA_XOR,
 	DMA_PQ,
 	DMA_XOR_VAL,
@@ -418,9 +419,6 @@ enum dma_slave_buswidth {
  * @device_fc: Flow Controller Settings. Only valid for slave channels. Fill
  * with 'true' if peripheral should be flow controller. Direction will be
  * selected at Runtime.
- * @slave_id: Slave requester id. Only valid for slave channels. The dma
- * slave peripheral will have unique id as dma requester which need to be
- * pass as slave config.
  * @peripheral_config: peripheral configuration for programming peripheral
  * for dmaengine transfer
  * @peripheral_size: peripheral configuration buffer size
@@ -448,7 +446,6 @@ struct dma_slave_config {
 	u32 src_port_window_size;
 	u32 dst_port_window_size;
 	bool device_fc;
-	unsigned int slave_id;
 	void *peripheral_config;
 	size_t peripheral_size;
 };
@@ -891,6 +888,11 @@ struct dma_device {
 	struct dma_async_tx_descriptor *(*device_prep_dma_memcpy)(
 		struct dma_chan *chan, dma_addr_t dst, dma_addr_t src,
 		size_t len, unsigned long flags);
+	struct dma_async_tx_descriptor *(*device_prep_dma_memcpy_sg)(
+		struct dma_chan *chan,
+		struct scatterlist *dst_sg, unsigned int dst_nents,
+		struct scatterlist *src_sg, unsigned int src_nents,
+		unsigned long flags);
 	struct dma_async_tx_descriptor *(*device_prep_dma_xor)(
 		struct dma_chan *chan, dma_addr_t dst, dma_addr_t *src,
 		unsigned int src_cnt, size_t len, unsigned long flags);
@@ -944,10 +946,8 @@ struct dma_device {
 	void (*device_issue_pending)(struct dma_chan *chan);
 	void (*device_release)(struct dma_device *dev);
 	/* debugfs support */
-#ifdef CONFIG_DEBUG_FS
 	void (*dbg_summary_show)(struct seq_file *s, struct dma_device *dev);
 	struct dentry *dbg_dev_root;
-#endif
 };
 
 static inline int dmaengine_slave_config(struct dma_chan *chan,
@@ -1053,6 +1053,20 @@ static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memcpy(
 						    len, flags);
 }
 
+static inline struct dma_async_tx_descriptor *dmaengine_prep_dma_memcpy_sg(
+		struct dma_chan *chan,
+		struct scatterlist *dst_sg, unsigned int dst_nents,
+		struct scatterlist *src_sg, unsigned int src_nents,
+		unsigned long flags)
+{
+	if (!chan || !chan->device || !chan->device->device_prep_dma_memcpy_sg)
+		return NULL;
+
+	return chan->device->device_prep_dma_memcpy_sg(chan, dst_sg, dst_nents,
+						       src_sg, src_nents,
+						       flags);
+}
+
 static inline bool dmaengine_is_metadata_mode_supported(struct dma_chan *chan,
 		enum dma_desc_metadata_mode mode)
 {
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index e04436a7ff27..45e903d84733 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -131,6 +131,14 @@ static inline int dmar_res_noop(struct acpi_dmar_header *hdr, void *arg)
 	return 0;
 }
 
+#ifdef CONFIG_DMAR_DEBUG
+void dmar_fault_dump_ptes(struct intel_iommu *iommu, u16 source_id,
+			  unsigned long long addr, u32 pasid);
+#else
+static inline void dmar_fault_dump_ptes(struct intel_iommu *iommu, u16 source_id,
+					unsigned long long addr, u32 pasid) {}
+#endif
+
 #ifdef CONFIG_INTEL_IOMMU
 extern int iommu_detected, no_iommu;
 extern int intel_iommu_init(void);
diff --git a/include/linux/dnotify.h b/include/linux/dnotify.h
index 0aad774beaec..b1d26f9f1c9f 100644
--- a/include/linux/dnotify.h
+++ b/include/linux/dnotify.h
@@ -26,10 +26,9 @@ struct dnotify_struct {
 			    FS_MODIFY | FS_MODIFY_CHILD |\
 			    FS_ACCESS | FS_ACCESS_CHILD |\
 			    FS_ATTRIB | FS_ATTRIB_CHILD |\
-			    FS_CREATE | FS_DN_RENAME |\
+			    FS_CREATE | FS_RENAME |\
 			    FS_MOVED_FROM | FS_MOVED_TO)
 
-extern int dir_notify_enable;
 extern void dnotify_flush(struct file *, fl_owner_t);
 extern int fcntl_dirnotify(int, struct file *, unsigned long);
 
diff --git a/include/linux/dsa/8021q.h b/include/linux/dsa/8021q.h
index c7fa4a3498fe..3ed117e299ec 100644
--- a/include/linux/dsa/8021q.h
+++ b/include/linux/dsa/8021q.h
@@ -7,8 +7,10 @@
 
 #include <linux/refcount.h>
 #include <linux/types.h>
+#include <net/dsa.h>
 
 struct dsa_switch;
+struct dsa_port;
 struct sk_buff;
 struct net_device;
 
@@ -30,33 +32,29 @@ int dsa_tag_8021q_register(struct dsa_switch *ds, __be16 proto);
 
 void dsa_tag_8021q_unregister(struct dsa_switch *ds);
 
-struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
-			       u16 tpid, u16 tci);
+int dsa_tag_8021q_bridge_join(struct dsa_switch *ds, int port,
+			      struct dsa_bridge bridge);
 
-void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id);
+void dsa_tag_8021q_bridge_leave(struct dsa_switch *ds, int port,
+				struct dsa_bridge bridge);
 
-int dsa_tag_8021q_bridge_tx_fwd_offload(struct dsa_switch *ds, int port,
-					struct net_device *br,
-					int bridge_num);
+struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
+			       u16 tpid, u16 tci);
 
-void dsa_tag_8021q_bridge_tx_fwd_unoffload(struct dsa_switch *ds, int port,
-					   struct net_device *br,
-					   int bridge_num);
+void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id,
+		   int *vbid);
 
-u16 dsa_8021q_bridge_tx_fwd_offload_vid(int bridge_num);
+struct net_device *dsa_tag_8021q_find_port_by_vbid(struct net_device *master,
+						   int vbid);
 
-u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port);
+u16 dsa_tag_8021q_bridge_vid(unsigned int bridge_num);
 
-u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port);
+u16 dsa_tag_8021q_standalone_vid(const struct dsa_port *dp);
 
 int dsa_8021q_rx_switch_id(u16 vid);
 
 int dsa_8021q_rx_source_port(u16 vid);
 
-bool vid_is_dsa_8021q_rxvlan(u16 vid);
-
-bool vid_is_dsa_8021q_txvlan(u16 vid);
-
 bool vid_is_dsa_8021q(u16 vid);
 
 #endif /* _NET_DSA_8021Q_H */
diff --git a/include/linux/dsa/loop.h b/include/linux/dsa/loop.h
index 5a3470bcc8a7..b8fef35591aa 100644
--- a/include/linux/dsa/loop.h
+++ b/include/linux/dsa/loop.h
@@ -2,6 +2,7 @@
 #ifndef DSA_LOOP_H
 #define DSA_LOOP_H
 
+#include <linux/if_vlan.h>
 #include <linux/types.h>
 #include <linux/ethtool.h>
 #include <net/dsa.h>
diff --git a/include/linux/dsa/ocelot.h b/include/linux/dsa/ocelot.h
index 8ae999f587c4..dca2969015d8 100644
--- a/include/linux/dsa/ocelot.h
+++ b/include/linux/dsa/ocelot.h
@@ -8,10 +8,12 @@
 #include <linux/kthread.h>
 #include <linux/packing.h>
 #include <linux/skbuff.h>
+#include <net/dsa.h>
 
 struct ocelot_skb_cb {
 	struct sk_buff *clone;
 	unsigned int ptp_class; /* valid only for clones */
+	u32 tstamp_lo;
 	u8 ptp_cmd;
 	u8 ts_id;
 };
@@ -167,11 +169,18 @@ struct felix_deferred_xmit_work {
 	struct kthread_work work;
 };
 
-struct felix_port {
+struct ocelot_8021q_tagger_data {
 	void (*xmit_work_fn)(struct kthread_work *work);
-	struct kthread_worker *xmit_worker;
 };
 
+static inline struct ocelot_8021q_tagger_data *
+ocelot_8021q_tagger_data(struct dsa_switch *ds)
+{
+	BUG_ON(ds->dst->tag_ops->proto != DSA_TAG_PROTO_OCELOT_8021Q);
+
+	return ds->tagger_data;
+}
+
 static inline void ocelot_xfh_get_rew_val(void *extraction, u64 *rew_val)
 {
 	packing(extraction, rew_val, 116, 85, OCELOT_TAG_LEN, UNPACK, 0);
@@ -242,9 +251,9 @@ static inline void ocelot_ifh_set_tag_type(void *injection, u64 tag_type)
 	packing(injection, &tag_type, 16, 16, OCELOT_TAG_LEN, PACK, 0);
 }
 
-static inline void ocelot_ifh_set_vid(void *injection, u64 vid)
+static inline void ocelot_ifh_set_vlan_tci(void *injection, u64 vlan_tci)
 {
-	packing(injection, &vid, 11, 0, OCELOT_TAG_LEN, PACK, 0);
+	packing(injection, &vlan_tci, 15, 0, OCELOT_TAG_LEN, PACK, 0);
 }
 
 /* Determine the PTP REW_OP to use for injecting the given skb */
diff --git a/include/linux/dsa/sja1105.h b/include/linux/dsa/sja1105.h
index 9e07079528a5..159e43171ccc 100644
--- a/include/linux/dsa/sja1105.h
+++ b/include/linux/dsa/sja1105.h
@@ -35,23 +35,26 @@
 #define SJA1105_META_SMAC			0x222222222222ull
 #define SJA1105_META_DMAC			0x0180C200000Eull
 
-#define SJA1105_HWTS_RX_EN			0
+enum sja1110_meta_tstamp {
+	SJA1110_META_TSTAMP_TX = 0,
+	SJA1110_META_TSTAMP_RX = 1,
+};
 
-/* Global tagger data: each struct sja1105_port has a reference to
- * the structure defined in struct sja1105_private.
- */
+struct sja1105_deferred_xmit_work {
+	struct dsa_port *dp;
+	struct sk_buff *skb;
+	struct kthread_work work;
+};
+
+/* Global tagger data */
 struct sja1105_tagger_data {
-	struct sk_buff *stampable_skb;
-	/* Protects concurrent access to the meta state machine
-	 * from taggers running on multiple ports on SMP systems
-	 */
-	spinlock_t meta_lock;
-	unsigned long state;
-	u8 ts_id;
-	/* Used on SJA1110 where meta frames are generated only for
-	 * 2-step TX timestamps
-	 */
-	struct sk_buff_head skb_txtstamp_queue;
+	/* Tagger to switch */
+	void (*xmit_work_fn)(struct kthread_work *work);
+	void (*meta_tstamp_handler)(struct dsa_switch *ds, int port, u8 ts_id,
+				    enum sja1110_meta_tstamp dir, u64 tstamp);
+	/* Switch to tagger */
+	bool (*rxtstamp_get_state)(struct dsa_switch *ds);
+	void (*rxtstamp_set_state)(struct dsa_switch *ds, bool on);
 };
 
 struct sja1105_skb_cb {
@@ -64,33 +67,13 @@ struct sja1105_skb_cb {
 #define SJA1105_SKB_CB(skb) \
 	((struct sja1105_skb_cb *)((skb)->cb))
 
-struct sja1105_port {
-	struct kthread_worker *xmit_worker;
-	struct kthread_work xmit_work;
-	struct sk_buff_head xmit_queue;
-	struct sja1105_tagger_data *data;
-	struct dsa_port *dp;
-	bool hwts_tx_en;
-};
-
-/* Timestamps are in units of 8 ns clock ticks (equivalent to
- * a fixed 125 MHz clock).
- */
-#define SJA1105_TICK_NS			8
-
-static inline s64 ns_to_sja1105_ticks(s64 ns)
-{
-	return ns / SJA1105_TICK_NS;
-}
-
-static inline s64 sja1105_ticks_to_ns(s64 ticks)
+static inline struct sja1105_tagger_data *
+sja1105_tagger_data(struct dsa_switch *ds)
 {
-	return ticks * SJA1105_TICK_NS;
-}
+	BUG_ON(ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1105 &&
+	       ds->dst->tag_ops->proto != DSA_TAG_PROTO_SJA1110);
 
-static inline bool dsa_port_is_sja1105(struct dsa_port *dp)
-{
-	return true;
+	return ds->tagger_data;
 }
 
 #endif /* _NET_DSA_SJA1105_H */
diff --git a/include/linux/dsa/tag_qca.h b/include/linux/dsa/tag_qca.h
new file mode 100644
index 000000000000..4359fb0221cf
--- /dev/null
+++ b/include/linux/dsa/tag_qca.h
@@ -0,0 +1,82 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __TAG_QCA_H
+#define __TAG_QCA_H
+
+#define QCA_HDR_LEN	2
+#define QCA_HDR_VERSION	0x2
+
+#define QCA_HDR_RECV_VERSION		GENMASK(15, 14)
+#define QCA_HDR_RECV_PRIORITY		GENMASK(13, 11)
+#define QCA_HDR_RECV_TYPE		GENMASK(10, 6)
+#define QCA_HDR_RECV_FRAME_IS_TAGGED	BIT(3)
+#define QCA_HDR_RECV_SOURCE_PORT	GENMASK(2, 0)
+
+/* Packet type for recv */
+#define QCA_HDR_RECV_TYPE_NORMAL	0x0
+#define QCA_HDR_RECV_TYPE_MIB		0x1
+#define QCA_HDR_RECV_TYPE_RW_REG_ACK	0x2
+
+#define QCA_HDR_XMIT_VERSION		GENMASK(15, 14)
+#define QCA_HDR_XMIT_PRIORITY		GENMASK(13, 11)
+#define QCA_HDR_XMIT_CONTROL		GENMASK(10, 8)
+#define QCA_HDR_XMIT_FROM_CPU		BIT(7)
+#define QCA_HDR_XMIT_DP_BIT		GENMASK(6, 0)
+
+/* Packet type for xmit */
+#define QCA_HDR_XMIT_TYPE_NORMAL	0x0
+#define QCA_HDR_XMIT_TYPE_RW_REG	0x1
+
+/* Check code for a valid mgmt packet. Switch will ignore the packet
+ * with this wrong.
+ */
+#define QCA_HDR_MGMT_CHECK_CODE_VAL	0x5
+
+/* Specific define for in-band MDIO read/write with Ethernet packet */
+#define QCA_HDR_MGMT_SEQ_LEN		4 /* 4 byte for the seq */
+#define QCA_HDR_MGMT_COMMAND_LEN	4 /* 4 byte for the command */
+#define QCA_HDR_MGMT_DATA1_LEN		4 /* First 4 byte for the mdio data */
+#define QCA_HDR_MGMT_HEADER_LEN		(QCA_HDR_MGMT_SEQ_LEN + \
+					QCA_HDR_MGMT_COMMAND_LEN + \
+					QCA_HDR_MGMT_DATA1_LEN)
+
+#define QCA_HDR_MGMT_DATA2_LEN		12 /* Other 12 byte for the mdio data */
+#define QCA_HDR_MGMT_PADDING_LEN	34 /* Padding to reach the min Ethernet packet */
+
+#define QCA_HDR_MGMT_PKT_LEN		(QCA_HDR_MGMT_HEADER_LEN + \
+					QCA_HDR_LEN + \
+					QCA_HDR_MGMT_DATA2_LEN + \
+					QCA_HDR_MGMT_PADDING_LEN)
+
+#define QCA_HDR_MGMT_SEQ_NUM		GENMASK(31, 0)  /* 63, 32 */
+#define QCA_HDR_MGMT_CHECK_CODE		GENMASK(31, 29) /* 31, 29 */
+#define QCA_HDR_MGMT_CMD		BIT(28)		/* 28 */
+#define QCA_HDR_MGMT_LENGTH		GENMASK(23, 20) /* 23, 20 */
+#define QCA_HDR_MGMT_ADDR		GENMASK(18, 0)  /* 18, 0 */
+
+/* Special struct emulating a Ethernet header */
+struct qca_mgmt_ethhdr {
+	u32 command;		/* command bit 31:0 */
+	u32 seq;		/* seq 63:32 */
+	u32 mdio_data;		/* first 4byte mdio */
+	__be16 hdr;		/* qca hdr */
+} __packed;
+
+enum mdio_cmd {
+	MDIO_WRITE = 0x0,
+	MDIO_READ
+};
+
+struct mib_ethhdr {
+	u32 data[3];		/* first 3 mib counter */
+	__be16 hdr;		/* qca hdr */
+} __packed;
+
+struct qca_tagger_data {
+	void (*rw_reg_ack_handler)(struct dsa_switch *ds,
+				   struct sk_buff *skb);
+	void (*mib_autocast_handler)(struct dsa_switch *ds,
+				     struct sk_buff *skb);
+};
+
+#endif /* __TAG_QCA_H */
diff --git a/include/linux/dtpm.h b/include/linux/dtpm.h
index e80a332e3d8a..a4a13514b730 100644
--- a/include/linux/dtpm.h
+++ b/include/linux/dtpm.h
@@ -23,55 +23,51 @@ struct dtpm {
 	u64 power_max;
 	u64 power_min;
 	int weight;
-	void *private;
 };
 
 struct dtpm_ops {
 	u64 (*set_power_uw)(struct dtpm *, u64);
 	u64 (*get_power_uw)(struct dtpm *);
+	int (*update_power_uw)(struct dtpm *);
 	void (*release)(struct dtpm *);
 };
 
-struct dtpm_descr;
+struct device_node;
 
-typedef int (*dtpm_init_t)(struct dtpm_descr *);
-
-struct dtpm_descr {
-	struct dtpm *parent;
+struct dtpm_subsys_ops {
 	const char *name;
-	dtpm_init_t init;
+	int (*init)(void);
+	void (*exit)(void);
+	int (*setup)(struct dtpm *, struct device_node *);
 };
 
-/* Init section thermal table */
-extern struct dtpm_descr *__dtpm_table[];
-extern struct dtpm_descr *__dtpm_table_end[];
-
-#define DTPM_TABLE_ENTRY(name)			\
-	static typeof(name) *__dtpm_table_entry_##name	\
-	__used __section("__dtpm_table") = &name
-
-#define DTPM_DECLARE(name)	DTPM_TABLE_ENTRY(name)
+enum DTPM_NODE_TYPE {
+	DTPM_NODE_VIRTUAL = 0,
+	DTPM_NODE_DT,
+};
 
-#define for_each_dtpm_table(__dtpm)	\
-	for (__dtpm = __dtpm_table;	\
-	     __dtpm < __dtpm_table_end;	\
-	     __dtpm++)
+struct dtpm_node {
+	enum DTPM_NODE_TYPE type;
+	const char *name;
+	struct dtpm_node *parent;
+};
 
 static inline struct dtpm *to_dtpm(struct powercap_zone *zone)
 {
 	return container_of(zone, struct dtpm, zone);
 }
 
-int dtpm_update_power(struct dtpm *dtpm, u64 power_min, u64 power_max);
+int dtpm_update_power(struct dtpm *dtpm);
 
 int dtpm_release_zone(struct powercap_zone *pcz);
 
-struct dtpm *dtpm_alloc(struct dtpm_ops *ops);
+void dtpm_init(struct dtpm *dtpm, struct dtpm_ops *ops);
 
 void dtpm_unregister(struct dtpm *dtpm);
 
 int dtpm_register(const char *name, struct dtpm *dtpm, struct dtpm *parent);
 
-int dtpm_register_cpu(struct dtpm *parent);
+int dtpm_create_hierarchy(struct of_device_id *dtpm_match_table);
 
+void dtpm_destroy_hierarchy(void);
 #endif
diff --git a/include/linux/edac.h b/include/linux/edac.h
index 4207d06996a4..e730b3468719 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -182,6 +182,8 @@ static inline char *mc_event_error_type(const unsigned int err_type)
  * @MEM_LRDDR4:		Load-Reduced DDR4 memory.
  * @MEM_LPDDR4:		Low-Power DDR4 memory.
  * @MEM_DDR5:		Unbuffered DDR5 RAM
+ * @MEM_RDDR5:		Registered DDR5 RAM
+ * @MEM_LRDDR5:		Load-Reduced DDR5 memory.
  * @MEM_NVDIMM:		Non-volatile RAM
  * @MEM_WIO2:		Wide I/O 2.
  * @MEM_HBM2:		High bandwidth Memory Gen 2.
@@ -211,6 +213,8 @@ enum mem_type {
 	MEM_LRDDR4,
 	MEM_LPDDR4,
 	MEM_DDR5,
+	MEM_RDDR5,
+	MEM_LRDDR5,
 	MEM_NVDIMM,
 	MEM_WIO2,
 	MEM_HBM2,
@@ -239,6 +243,8 @@ enum mem_type {
 #define MEM_FLAG_LRDDR4         BIT(MEM_LRDDR4)
 #define MEM_FLAG_LPDDR4         BIT(MEM_LPDDR4)
 #define MEM_FLAG_DDR5           BIT(MEM_DDR5)
+#define MEM_FLAG_RDDR5          BIT(MEM_RDDR5)
+#define MEM_FLAG_LRDDR5         BIT(MEM_LRDDR5)
 #define MEM_FLAG_NVDIMM         BIT(MEM_NVDIMM)
 #define MEM_FLAG_WIO2		BIT(MEM_WIO2)
 #define MEM_FLAG_HBM2		BIT(MEM_HBM2)
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 6b5d36babfcc..ccd4d3f91c98 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -148,6 +148,52 @@ typedef struct {
 	u32 imagesize;
 } efi_capsule_header_t;
 
+/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_HEADER */
+struct efi_manage_capsule_header {
+	u32 ver;
+	u16 emb_drv_cnt;
+	u16 payload_cnt;
+	/*
+	 * Variable-size array of the size given by the sum of
+	 * emb_drv_cnt and payload_cnt.
+	 */
+	u64 offset_list[];
+} __packed;
+
+/* EFI_FIRMWARE_MANAGEMENT_CAPSULE_IMAGE_HEADER */
+struct efi_manage_capsule_image_header {
+	u32 ver;
+	efi_guid_t image_type_id;
+	u8 image_index;
+	u8 reserved_bytes[3];
+	u32 image_size;
+	u32 vendor_code_size;
+	/* hw_ins was introduced in version 2 */
+	u64 hw_ins;
+	/* capsule_support was introduced in version 3 */
+	u64 capsule_support;
+} __packed;
+
+/* WIN_CERTIFICATE */
+struct win_cert {
+	u32 len;
+	u16 rev;
+	u16 cert_type;
+};
+
+/* WIN_CERTIFICATE_UEFI_GUID */
+struct win_cert_uefi_guid {
+	struct win_cert	hdr;
+	efi_guid_t cert_type;
+	u8 cert_data[];
+};
+
+/* EFI_FIRMWARE_IMAGE_AUTHENTICATION */
+struct efi_image_auth {
+	u64 mon_count;
+	struct win_cert_uefi_guid auth_info;
+};
+
 /*
  * EFI capsule flags
  */
@@ -362,6 +408,7 @@ void efi_native_runtime_setup(void);
 
 /* OEM GUIDs */
 #define DELLEMC_EFI_RCI2_TABLE_GUID		EFI_GUID(0x2d9f28a2, 0xa886, 0x456a,  0x97, 0xa8, 0xf1, 0x1e, 0xf2, 0x4f, 0xf4, 0x55)
+#define AMD_SEV_MEM_ENCRYPT_GUID		EFI_GUID(0x0cf29b71, 0x9e51, 0x433a,  0xa3, 0xb7, 0x81, 0xf3, 0xab, 0x16, 0xb8, 0x75)
 
 typedef struct {
 	efi_guid_t guid;
@@ -569,8 +616,8 @@ extern struct efi {
 	unsigned long			flags;
 } efi;
 
-#define EFI_RT_SUPPORTED_GET_TIME 				0x0001
-#define EFI_RT_SUPPORTED_SET_TIME 				0x0002
+#define EFI_RT_SUPPORTED_GET_TIME				0x0001
+#define EFI_RT_SUPPORTED_SET_TIME				0x0002
 #define EFI_RT_SUPPORTED_GET_WAKEUP_TIME			0x0004
 #define EFI_RT_SUPPORTED_SET_WAKEUP_TIME			0x0008
 #define EFI_RT_SUPPORTED_GET_VARIABLE				0x0010
@@ -837,7 +884,7 @@ extern int efi_status_to_err(efi_status_t status);
 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
 #define EFI_VARIABLE_APPEND_WRITE	0x0000000000000040
 
-#define EFI_VARIABLE_MASK 	(EFI_VARIABLE_NON_VOLATILE | \
+#define EFI_VARIABLE_MASK	(EFI_VARIABLE_NON_VOLATILE | \
 				EFI_VARIABLE_BOOTSERVICE_ACCESS | \
 				EFI_VARIABLE_RUNTIME_ACCESS | \
 				EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
@@ -1282,4 +1329,10 @@ static inline struct efi_mokvar_table_entry *efi_mokvar_entry_find(
 }
 #endif
 
+#ifdef CONFIG_SYSFB
+extern void efifb_setup_from_dmi(struct screen_info *si, const char *opt);
+#else
+static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt) { }
+#endif
+
 #endif /* _LINUX_EFI_H */
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
deleted file mode 100644
index ef9ceead3db1..000000000000
--- a/include/linux/elevator.h
+++ /dev/null
@@ -1,181 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_ELEVATOR_H
-#define _LINUX_ELEVATOR_H
-
-#include <linux/percpu.h>
-#include <linux/hashtable.h>
-
-#ifdef CONFIG_BLOCK
-
-struct io_cq;
-struct elevator_type;
-#ifdef CONFIG_BLK_DEBUG_FS
-struct blk_mq_debugfs_attr;
-#endif
-
-/*
- * Return values from elevator merger
- */
-enum elv_merge {
-	ELEVATOR_NO_MERGE	= 0,
-	ELEVATOR_FRONT_MERGE	= 1,
-	ELEVATOR_BACK_MERGE	= 2,
-	ELEVATOR_DISCARD_MERGE	= 3,
-};
-
-struct blk_mq_alloc_data;
-struct blk_mq_hw_ctx;
-
-struct elevator_mq_ops {
-	int (*init_sched)(struct request_queue *, struct elevator_type *);
-	void (*exit_sched)(struct elevator_queue *);
-	int (*init_hctx)(struct blk_mq_hw_ctx *, unsigned int);
-	void (*exit_hctx)(struct blk_mq_hw_ctx *, unsigned int);
-	void (*depth_updated)(struct blk_mq_hw_ctx *);
-
-	bool (*allow_merge)(struct request_queue *, struct request *, struct bio *);
-	bool (*bio_merge)(struct request_queue *, struct bio *, unsigned int);
-	int (*request_merge)(struct request_queue *q, struct request **, struct bio *);
-	void (*request_merged)(struct request_queue *, struct request *, enum elv_merge);
-	void (*requests_merged)(struct request_queue *, struct request *, struct request *);
-	void (*limit_depth)(unsigned int, struct blk_mq_alloc_data *);
-	void (*prepare_request)(struct request *);
-	void (*finish_request)(struct request *);
-	void (*insert_requests)(struct blk_mq_hw_ctx *, struct list_head *, bool);
-	struct request *(*dispatch_request)(struct blk_mq_hw_ctx *);
-	bool (*has_work)(struct blk_mq_hw_ctx *);
-	void (*completed_request)(struct request *, u64);
-	void (*requeue_request)(struct request *);
-	struct request *(*former_request)(struct request_queue *, struct request *);
-	struct request *(*next_request)(struct request_queue *, struct request *);
-	void (*init_icq)(struct io_cq *);
-	void (*exit_icq)(struct io_cq *);
-};
-
-#define ELV_NAME_MAX	(16)
-
-struct elv_fs_entry {
-	struct attribute attr;
-	ssize_t (*show)(struct elevator_queue *, char *);
-	ssize_t (*store)(struct elevator_queue *, const char *, size_t);
-};
-
-/*
- * identifies an elevator type, such as AS or deadline
- */
-struct elevator_type
-{
-	/* managed by elevator core */
-	struct kmem_cache *icq_cache;
-
-	/* fields provided by elevator implementation */
-	struct elevator_mq_ops ops;
-
-	size_t icq_size;	/* see iocontext.h */
-	size_t icq_align;	/* ditto */
-	struct elv_fs_entry *elevator_attrs;
-	const char *elevator_name;
-	const char *elevator_alias;
-	const unsigned int elevator_features;
-	struct module *elevator_owner;
-#ifdef CONFIG_BLK_DEBUG_FS
-	const struct blk_mq_debugfs_attr *queue_debugfs_attrs;
-	const struct blk_mq_debugfs_attr *hctx_debugfs_attrs;
-#endif
-
-	/* managed by elevator core */
-	char icq_cache_name[ELV_NAME_MAX + 6];	/* elvname + "_io_cq" */
-	struct list_head list;
-};
-
-#define ELV_HASH_BITS 6
-
-void elv_rqhash_del(struct request_queue *q, struct request *rq);
-void elv_rqhash_add(struct request_queue *q, struct request *rq);
-void elv_rqhash_reposition(struct request_queue *q, struct request *rq);
-struct request *elv_rqhash_find(struct request_queue *q, sector_t offset);
-
-/*
- * each queue has an elevator_queue associated with it
- */
-struct elevator_queue
-{
-	struct elevator_type *type;
-	void *elevator_data;
-	struct kobject kobj;
-	struct mutex sysfs_lock;
-	unsigned int registered:1;
-	DECLARE_HASHTABLE(hash, ELV_HASH_BITS);
-};
-
-/*
- * block elevator interface
- */
-extern enum elv_merge elv_merge(struct request_queue *, struct request **,
-		struct bio *);
-extern void elv_merge_requests(struct request_queue *, struct request *,
-			       struct request *);
-extern void elv_merged_request(struct request_queue *, struct request *,
-		enum elv_merge);
-extern bool elv_attempt_insert_merge(struct request_queue *, struct request *,
-				     struct list_head *);
-extern struct request *elv_former_request(struct request_queue *, struct request *);
-extern struct request *elv_latter_request(struct request_queue *, struct request *);
-void elevator_init_mq(struct request_queue *q);
-
-/*
- * io scheduler registration
- */
-extern int elv_register(struct elevator_type *);
-extern void elv_unregister(struct elevator_type *);
-
-/*
- * io scheduler sysfs switching
- */
-extern ssize_t elv_iosched_show(struct request_queue *, char *);
-extern ssize_t elv_iosched_store(struct request_queue *, const char *, size_t);
-
-extern bool elv_bio_merge_ok(struct request *, struct bio *);
-extern struct elevator_queue *elevator_alloc(struct request_queue *,
-					struct elevator_type *);
-
-/*
- * Helper functions.
- */
-extern struct request *elv_rb_former_request(struct request_queue *, struct request *);
-extern struct request *elv_rb_latter_request(struct request_queue *, struct request *);
-
-/*
- * rb support functions.
- */
-extern void elv_rb_add(struct rb_root *, struct request *);
-extern void elv_rb_del(struct rb_root *, struct request *);
-extern struct request *elv_rb_find(struct rb_root *, sector_t);
-
-/*
- * Insertion selection
- */
-#define ELEVATOR_INSERT_FRONT	1
-#define ELEVATOR_INSERT_BACK	2
-#define ELEVATOR_INSERT_SORT	3
-#define ELEVATOR_INSERT_REQUEUE	4
-#define ELEVATOR_INSERT_FLUSH	5
-#define ELEVATOR_INSERT_SORT_MERGE	6
-
-#define rq_end_sector(rq)	(blk_rq_pos(rq) + blk_rq_sectors(rq))
-#define rb_entry_rq(node)	rb_entry((node), struct request, rb_node)
-
-#define rq_entry_fifo(ptr)	list_entry((ptr), struct request, queuelist)
-#define rq_fifo_clear(rq)	list_del_init(&(rq)->queuelist)
-
-/*
- * Elevator features.
- */
-
-/* Supports zoned block devices sequential write constraint */
-#define ELEVATOR_F_ZBD_SEQ_WRITE	(1U << 0)
-/* Supports scheduling on multiple hardware queues */
-#define ELEVATOR_F_MQ_AWARE		(1U << 1)
-
-#endif /* CONFIG_BLOCK */
-#endif
diff --git a/include/linux/elfcore-compat.h b/include/linux/elfcore-compat.h
index e272c3d452ce..54feb64e9b5d 100644
--- a/include/linux/elfcore-compat.h
+++ b/include/linux/elfcore-compat.h
@@ -43,6 +43,11 @@ struct compat_elf_prpsinfo
 	__compat_uid_t			pr_uid;
 	__compat_gid_t			pr_gid;
 	compat_pid_t			pr_pid, pr_ppid, pr_pgrp, pr_sid;
+	/*
+	 * The hard-coded 16 is derived from TASK_COMM_LEN, but it can't be
+	 * changed as it is exposed to userspace. We'd better make it hard-coded
+	 * here.
+	 */
 	char				pr_fname[16];
 	char				pr_psargs[ELF_PRARGSZ];
 };
diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h
index 957ebec35aad..f8e206e82476 100644
--- a/include/linux/elfcore.h
+++ b/include/linux/elfcore.h
@@ -65,6 +65,11 @@ struct elf_prpsinfo
 	__kernel_gid_t	pr_gid;
 	pid_t	pr_pid, pr_ppid, pr_pgrp, pr_sid;
 	/* Lots missing */
+	/*
+	 * The hard-coded 16 is derived from TASK_COMM_LEN, but it can't be
+	 * changed as it is exposed to userspace. We'd better make it hard-coded
+	 * here.
+	 */
 	char	pr_fname[16];	/* filename of executable */
 	char	pr_psargs[ELF_PRARGSZ];	/* initial part of arg list */
 };
@@ -109,7 +114,7 @@ static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_reg
 #endif
 }
 
-#if (defined(CONFIG_UML) && defined(CONFIG_X86_32)) || defined(CONFIG_IA64)
+#ifdef CONFIG_ARCH_BINFMT_ELF_EXTRA_PHDRS
 /*
  * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
  * extra segments containing the gate DSO contents.  Dumping its
@@ -144,6 +149,6 @@ static inline size_t elf_core_extra_data_size(void)
 {
 	return 0;
 }
-#endif
+#endif /* CONFIG_ARCH_BINFMT_ELF_EXTRA_PHDRS */
 
 #endif /* _LINUX_ELFCORE_H */
diff --git a/include/linux/energy_model.h b/include/linux/energy_model.h
index 39dcadd492b5..9f3c400bc52d 100644
--- a/include/linux/energy_model.h
+++ b/include/linux/energy_model.h
@@ -17,19 +17,30 @@
  *		device). It can be a total power: static and dynamic.
  * @cost:	The cost coefficient associated with this level, used during
  *		energy calculation. Equal to: power * max_frequency / frequency
+ * @flags:	see "em_perf_state flags" description below.
  */
 struct em_perf_state {
 	unsigned long frequency;
 	unsigned long power;
 	unsigned long cost;
+	unsigned long flags;
 };
 
+/*
+ * em_perf_state flags:
+ *
+ * EM_PERF_STATE_INEFFICIENT: The performance state is inefficient. There is
+ * in this em_perf_domain, another performance state with a higher frequency
+ * but a lower or equal power cost. Such inefficient states are ignored when
+ * using em_pd_get_efficient_*() functions.
+ */
+#define EM_PERF_STATE_INEFFICIENT BIT(0)
+
 /**
  * struct em_perf_domain - Performance domain
  * @table:		List of performance states, in ascending order
  * @nr_perf_states:	Number of performance states
- * @milliwatts:		Flag indicating the power values are in milli-Watts
- *			or some other scale.
+ * @flags:		See "em_perf_domain flags"
  * @cpus:		Cpumask covering the CPUs of the domain. It's here
  *			for performance reasons to avoid potential cache
  *			misses during energy calculations in the scheduler
@@ -44,10 +55,22 @@ struct em_perf_state {
 struct em_perf_domain {
 	struct em_perf_state *table;
 	int nr_perf_states;
-	int milliwatts;
+	unsigned long flags;
 	unsigned long cpus[];
 };
 
+/*
+ *  em_perf_domain flags:
+ *
+ *  EM_PERF_DOMAIN_MILLIWATTS: The power values are in milli-Watts or some
+ *  other scale.
+ *
+ *  EM_PERF_DOMAIN_SKIP_INEFFICIENCIES: Skip inefficient states when estimating
+ *  energy consumption.
+ */
+#define EM_PERF_DOMAIN_MILLIWATTS BIT(0)
+#define EM_PERF_DOMAIN_SKIP_INEFFICIENCIES BIT(1)
+
 #define em_span_cpus(em) (to_cpumask((em)->cpus))
 
 #ifdef CONFIG_ENERGY_MODEL
@@ -93,6 +116,7 @@ struct em_data_callback {
 			    struct device *dev);
 };
 #define EM_DATA_CB(_active_power_cb) { .active_power = &_active_power_cb }
+#define EM_SET_ACTIVE_POWER_CB(em_cb, cb) ((em_cb).active_power = cb)
 
 struct em_perf_domain *em_cpu_get(int cpu);
 struct em_perf_domain *em_pd_get(struct device *dev);
@@ -102,6 +126,37 @@ int em_dev_register_perf_domain(struct device *dev, unsigned int nr_states,
 void em_dev_unregister_perf_domain(struct device *dev);
 
 /**
+ * em_pd_get_efficient_state() - Get an efficient performance state from the EM
+ * @pd   : Performance domain for which we want an efficient frequency
+ * @freq : Frequency to map with the EM
+ *
+ * It is called from the scheduler code quite frequently and as a consequence
+ * doesn't implement any check.
+ *
+ * Return: An efficient performance state, high enough to meet @freq
+ * requirement.
+ */
+static inline
+struct em_perf_state *em_pd_get_efficient_state(struct em_perf_domain *pd,
+						unsigned long freq)
+{
+	struct em_perf_state *ps;
+	int i;
+
+	for (i = 0; i < pd->nr_perf_states; i++) {
+		ps = &pd->table[i];
+		if (ps->frequency >= freq) {
+			if (pd->flags & EM_PERF_DOMAIN_SKIP_INEFFICIENCIES &&
+			    ps->flags & EM_PERF_STATE_INEFFICIENT)
+				continue;
+			break;
+		}
+	}
+
+	return ps;
+}
+
+/**
  * em_cpu_energy() - Estimates the energy consumed by the CPUs of a
  *		performance domain
  * @pd		: performance domain for which energy has to be estimated
@@ -123,7 +178,7 @@ static inline unsigned long em_cpu_energy(struct em_perf_domain *pd,
 {
 	unsigned long freq, scale_cpu;
 	struct em_perf_state *ps;
-	int i, cpu;
+	int cpu;
 
 	if (!sum_util)
 		return 0;
@@ -148,11 +203,7 @@ static inline unsigned long em_cpu_energy(struct em_perf_domain *pd,
 	 * Find the lowest performance state of the Energy Model above the
 	 * requested frequency.
 	 */
-	for (i = 0; i < pd->nr_perf_states; i++) {
-		ps = &pd->table[i];
-		if (ps->frequency >= freq)
-			break;
-	}
+	ps = em_pd_get_efficient_state(pd, freq);
 
 	/*
 	 * The capacity of a CPU in the domain at the performance state (ps)
@@ -214,6 +265,7 @@ static inline int em_pd_nr_perf_states(struct em_perf_domain *pd)
 #else
 struct em_data_callback {};
 #define EM_DATA_CB(_active_power_cb) { }
+#define EM_SET_ACTIVE_POWER_CB(em_cb, cb) do { } while (0)
 
 static inline
 int em_dev_register_perf_domain(struct device *dev, unsigned int nr_states,
diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h
index 2e2b8d6140ed..ab78bd4c2eb0 100644
--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -3,7 +3,7 @@
 #define __LINUX_ENTRYCOMMON_H
 
 #include <linux/static_call_types.h>
-#include <linux/tracehook.h>
+#include <linux/ptrace.h>
 #include <linux/syscalls.h>
 #include <linux/seccomp.h>
 #include <linux/sched.h>
@@ -80,26 +80,6 @@ static __always_inline void arch_check_user_regs(struct pt_regs *regs) {}
 #endif
 
 /**
- * arch_syscall_enter_tracehook - Wrapper around tracehook_report_syscall_entry()
- * @regs:	Pointer to currents pt_regs
- *
- * Returns: 0 on success or an error code to skip the syscall.
- *
- * Defaults to tracehook_report_syscall_entry(). Can be replaced by
- * architecture specific code.
- *
- * Invoked from syscall_enter_from_user_mode()
- */
-static inline __must_check int arch_syscall_enter_tracehook(struct pt_regs *regs);
-
-#ifndef arch_syscall_enter_tracehook
-static inline __must_check int arch_syscall_enter_tracehook(struct pt_regs *regs)
-{
-	return tracehook_report_syscall_entry(regs);
-}
-#endif
-
-/**
  * enter_from_user_mode - Establish state when coming from user mode
  *
  * Syscall/interrupt entry disables interrupts, but user mode is traced as
@@ -157,7 +137,7 @@ void syscall_enter_from_user_mode_prepare(struct pt_regs *regs);
  * It handles the following work items:
  *
  *  1) syscall_work flag dependent invocations of
- *     arch_syscall_enter_tracehook(), __secure_computing(), trace_sys_enter()
+ *     ptrace_report_syscall_entry(), __secure_computing(), trace_sys_enter()
  *  2) Invocation of audit_syscall_entry()
  */
 long syscall_enter_from_user_mode_work(struct pt_regs *regs, long syscall);
@@ -277,26 +257,7 @@ static __always_inline void arch_exit_to_user_mode(void) { }
  *
  * Invoked from exit_to_user_mode_loop().
  */
-void arch_do_signal_or_restart(struct pt_regs *regs, bool has_signal);
-
-/**
- * arch_syscall_exit_tracehook - Wrapper around tracehook_report_syscall_exit()
- * @regs:	Pointer to currents pt_regs
- * @step:	Indicator for single step
- *
- * Defaults to tracehook_report_syscall_exit(). Can be replaced by
- * architecture specific code.
- *
- * Invoked from syscall_exit_to_user_mode()
- */
-static inline void arch_syscall_exit_tracehook(struct pt_regs *regs, bool step);
-
-#ifndef arch_syscall_exit_tracehook
-static inline void arch_syscall_exit_tracehook(struct pt_regs *regs, bool step)
-{
-	tracehook_report_syscall_exit(regs, step);
-}
-#endif
+void arch_do_signal_or_restart(struct pt_regs *regs);
 
 /**
  * exit_to_user_mode - Fixup state when exiting to user mode
@@ -347,7 +308,7 @@ void syscall_exit_to_user_mode_work(struct pt_regs *regs);
  *	- rseq syscall exit
  *      - audit
  *	- syscall tracing
- *	- tracehook (single stepping)
+ *	- ptrace (single stepping)
  *
  *  2) Preparatory work
  *	- Exit to user mode loop (common TIF handling). Invokes
@@ -454,10 +415,21 @@ irqentry_state_t noinstr irqentry_enter(struct pt_regs *regs);
  *
  * Conditional reschedule with additional sanity checks.
  */
-void irqentry_exit_cond_resched(void);
+void raw_irqentry_exit_cond_resched(void);
 #ifdef CONFIG_PREEMPT_DYNAMIC
-DECLARE_STATIC_CALL(irqentry_exit_cond_resched, irqentry_exit_cond_resched);
+#if defined(CONFIG_HAVE_PREEMPT_DYNAMIC_CALL)
+#define irqentry_exit_cond_resched_dynamic_enabled	raw_irqentry_exit_cond_resched
+#define irqentry_exit_cond_resched_dynamic_disabled	NULL
+DECLARE_STATIC_CALL(irqentry_exit_cond_resched, raw_irqentry_exit_cond_resched);
+#define irqentry_exit_cond_resched()	static_call(irqentry_exit_cond_resched)()
+#elif defined(CONFIG_HAVE_PREEMPT_DYNAMIC_KEY)
+DECLARE_STATIC_KEY_TRUE(sk_dynamic_irqentry_exit_cond_resched);
+void dynamic_irqentry_exit_cond_resched(void);
+#define irqentry_exit_cond_resched()	dynamic_irqentry_exit_cond_resched()
 #endif
+#else /* CONFIG_PREEMPT_DYNAMIC */
+#define irqentry_exit_cond_resched()	raw_irqentry_exit_cond_resched()
+#endif /* CONFIG_PREEMPT_DYNAMIC */
 
 /**
  * irqentry_exit - Handle return from exception that used irqentry_enter()
diff --git a/include/linux/entry-kvm.h b/include/linux/entry-kvm.h
index 0d7865a0731c..6813171afccb 100644
--- a/include/linux/entry-kvm.h
+++ b/include/linux/entry-kvm.h
@@ -3,7 +3,7 @@
 #define __LINUX_ENTRYKVM_H
 
 #include <linux/static_call_types.h>
-#include <linux/tracehook.h>
+#include <linux/resume_user_mode.h>
 #include <linux/syscalls.h>
 #include <linux/seccomp.h>
 #include <linux/sched.h>
@@ -75,7 +75,7 @@ static inline void xfer_to_guest_mode_prepare(void)
  */
 static inline bool __xfer_to_guest_mode_work_pending(void)
 {
-	unsigned long ti_work = READ_ONCE(current_thread_info()->flags);
+	unsigned long ti_work = read_thread_flags();
 
 	return !!(ti_work & XFER_TO_GUEST_MODE_WORK);
 }
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index c58d50451485..92b10e67d5f8 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -26,9 +26,16 @@
 
 #ifdef __KERNEL__
 struct device;
+struct fwnode_handle;
+
 int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr);
+int platform_get_ethdev_address(struct device *dev, struct net_device *netdev);
 unsigned char *arch_get_platform_mac_address(void);
 int nvmem_get_mac_address(struct device *dev, void *addrbuf);
+int device_get_mac_address(struct device *dev, char *addr);
+int device_get_ethdev_address(struct device *dev, struct net_device *netdev);
+int fwnode_get_mac_address(struct fwnode_handle *fwnode, char *addr);
+
 u32 eth_get_headlen(const struct net_device *dev, const void *data, u32 len);
 __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev);
 extern const struct header_ops eth_header_ops;
@@ -127,7 +134,7 @@ static inline bool is_multicast_ether_addr(const u8 *addr)
 #endif
 }
 
-static inline bool is_multicast_ether_addr_64bits(const u8 addr[6+2])
+static inline bool is_multicast_ether_addr_64bits(const u8 *addr)
 {
 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
 #ifdef __BIG_ENDIAN
@@ -227,8 +234,6 @@ static inline void eth_random_addr(u8 *addr)
 	addr[0] |= 0x02;	/* set local assignment bit (IEEE802) */
 }
 
-#define random_ether_addr(addr) eth_random_addr(addr)
-
 /**
  * eth_broadcast_addr - Assign broadcast address
  * @addr: Pointer to a six-byte array containing the Ethernet address
@@ -262,8 +267,11 @@ static inline void eth_zero_addr(u8 *addr)
  */
 static inline void eth_hw_addr_random(struct net_device *dev)
 {
+	u8 addr[ETH_ALEN];
+
+	eth_random_addr(addr);
+	__dev_addr_set(dev, addr, ETH_ALEN);
 	dev->addr_assign_type = NET_ADDR_RANDOM;
-	eth_random_addr(dev->dev_addr);
 }
 
 /**
@@ -323,7 +331,7 @@ static inline void eth_hw_addr_inherit(struct net_device *dst,
 				       struct net_device *src)
 {
 	dst->addr_assign_type = src->addr_assign_type;
-	ether_addr_copy(dst->dev_addr, src->dev_addr);
+	eth_hw_addr_set(dst, src->dev_addr);
 }
 
 /**
@@ -364,8 +372,7 @@ static inline bool ether_addr_equal(const u8 *addr1, const u8 *addr2)
  * Please note that alignment of addr1 & addr2 are only guaranteed to be 16 bits.
  */
 
-static inline bool ether_addr_equal_64bits(const u8 addr1[6+2],
-					   const u8 addr2[6+2])
+static inline bool ether_addr_equal_64bits(const u8 *addr1, const u8 *addr2)
 {
 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
 	u64 fold = (*(const u64 *)addr1) ^ (*(const u64 *)addr2);
@@ -544,6 +551,27 @@ static inline unsigned long compare_ether_header(const void *a, const void *b)
 }
 
 /**
+ * eth_hw_addr_gen - Generate and assign Ethernet address to a port
+ * @dev: pointer to port's net_device structure
+ * @base_addr: base Ethernet address
+ * @id: offset to add to the base address
+ *
+ * Generate a MAC address using a base address and an offset and assign it
+ * to a net_device. Commonly used by switch drivers which need to compute
+ * addresses for all their ports. addr_assign_type is not changed.
+ */
+static inline void eth_hw_addr_gen(struct net_device *dev, const u8 *base_addr,
+				   unsigned int id)
+{
+	u64 u = ether_addr_to_u64(base_addr);
+	u8 addr[ETH_ALEN];
+
+	u += id;
+	u64_to_ether_addr(u, addr);
+	eth_hw_addr_set(dev, addr);
+}
+
+/**
  * eth_skb_pad - Pad buffer to mininum number of octets for Ethernet frame
  * @skb: Buffer to pad
  *
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 849524b55d89..4af58459a1e7 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -67,6 +67,28 @@ enum {
 	ETH_RSS_HASH_FUNCS_COUNT
 };
 
+/**
+ * struct kernel_ethtool_ringparam - RX/TX ring configuration
+ * @rx_buf_len: Current length of buffers on the rx ring.
+ * @tcp_data_split: Scatter packet headers and data to separate buffers
+ * @cqe_size: Size of TX/RX completion queue event
+ */
+struct kernel_ethtool_ringparam {
+	u32	rx_buf_len;
+	u8	tcp_data_split;
+	u32	cqe_size;
+};
+
+/**
+ * enum ethtool_supported_ring_param - indicator caps for setting ring params
+ * @ETHTOOL_RING_USE_RX_BUF_LEN: capture for setting rx_buf_len
+ * @ETHTOOL_RING_USE_CQE_SIZE: capture for setting cqe_size
+ */
+enum ethtool_supported_ring_param {
+	ETHTOOL_RING_USE_RX_BUF_LEN = BIT(0),
+	ETHTOOL_RING_USE_CQE_SIZE   = BIT(1),
+};
+
 #define __ETH_RSS_HASH_BIT(bit)	((u32)1 << (bit))
 #define __ETH_RSS_HASH(name)	__ETH_RSS_HASH_BIT(ETH_RSS_HASH_##name##_BIT)
 
@@ -94,7 +116,8 @@ struct ethtool_link_ext_state_info {
 		enum ethtool_link_ext_substate_link_logical_mismatch link_logical_mismatch;
 		enum ethtool_link_ext_substate_bad_signal_integrity bad_signal_integrity;
 		enum ethtool_link_ext_substate_cable_issue cable_issue;
-		u8 __link_ext_substate;
+		enum ethtool_link_ext_substate_module module;
+		u32 __link_ext_substate;
 	};
 };
 
@@ -416,10 +439,22 @@ struct ethtool_module_eeprom {
 };
 
 /**
+ * struct ethtool_module_power_mode_params - module power mode parameters
+ * @policy: The power mode policy enforced by the host for the plug-in module.
+ * @mode: The operational power mode of the plug-in module. Should be filled by
+ *	device drivers on get operations.
+ */
+struct ethtool_module_power_mode_params {
+	enum ethtool_module_power_mode_policy policy;
+	enum ethtool_module_power_mode mode;
+};
+
+/**
  * struct ethtool_ops - optional netdev operations
  * @cap_link_lanes_supported: indicates if the driver supports lanes
  *	parameter.
  * @supported_coalesce_params: supported types of interrupt coalescing.
+ * @supported_ring_params: supported ring params.
  * @get_drvinfo: Report driver/device information.  Should only set the
  *	@driver, @version, @fw_version and @bus_info fields.  If not
  *	implemented, the @driver and @bus_info fields will be filled in
@@ -580,6 +615,11 @@ struct ethtool_module_eeprom {
  * @get_eth_ctrl_stats: Query some of the IEEE 802.3 MAC Ctrl statistics.
  * @get_rmon_stats: Query some of the RMON (RFC 2819) statistics.
  *	Set %ranges to a pointer to zero-terminated array of byte ranges.
+ * @get_module_power_mode: Get the power mode policy for the plug-in module
+ *	used by the network device and its operational power mode, if
+ *	plugged-in.
+ * @set_module_power_mode: Set the power mode policy for the plug-in module
+ *	used by the network device.
  *
  * All operations are optional (i.e. the function pointer may be set
  * to %NULL) and callers must take this into account.  Callers must
@@ -596,6 +636,7 @@ struct ethtool_module_eeprom {
 struct ethtool_ops {
 	u32     cap_link_lanes_supported:1;
 	u32	supported_coalesce_params;
+	u32	supported_ring_params;
 	void	(*get_drvinfo)(struct net_device *, struct ethtool_drvinfo *);
 	int	(*get_regs_len)(struct net_device *);
 	void	(*get_regs)(struct net_device *, struct ethtool_regs *, void *);
@@ -621,9 +662,13 @@ struct ethtool_ops {
 				struct kernel_ethtool_coalesce *,
 				struct netlink_ext_ack *);
 	void	(*get_ringparam)(struct net_device *,
-				 struct ethtool_ringparam *);
+				 struct ethtool_ringparam *,
+				 struct kernel_ethtool_ringparam *,
+				 struct netlink_ext_ack *);
 	int	(*set_ringparam)(struct net_device *,
-				 struct ethtool_ringparam *);
+				 struct ethtool_ringparam *,
+				 struct kernel_ethtool_ringparam *,
+				 struct netlink_ext_ack *);
 	void	(*get_pause_stats)(struct net_device *dev,
 				   struct ethtool_pause_stats *pause_stats);
 	void	(*get_pauseparam)(struct net_device *,
@@ -705,6 +750,12 @@ struct ethtool_ops {
 	void	(*get_rmon_stats)(struct net_device *dev,
 				  struct ethtool_rmon_stats *rmon_stats,
 				  const struct ethtool_rmon_hist_range **ranges);
+	int	(*get_module_power_mode)(struct net_device *dev,
+					 struct ethtool_module_power_mode_params *params,
+					 struct netlink_ext_ack *extack);
+	int	(*set_module_power_mode)(struct net_device *dev,
+					 const struct ethtool_module_power_mode_params *params,
+					 struct netlink_ext_ack *extack);
 };
 
 int ethtool_check_ops(const struct ethtool_ops *ops);
diff --git a/include/linux/ethtool_netlink.h b/include/linux/ethtool_netlink.h
index 1e7bf78cb382..aba348d58ff6 100644
--- a/include/linux/ethtool_netlink.h
+++ b/include/linux/ethtool_netlink.h
@@ -10,6 +10,9 @@
 #define __ETHTOOL_LINK_MODE_MASK_NWORDS \
 	DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
 
+#define ETHTOOL_PAUSE_STAT_CNT	(__ETHTOOL_A_PAUSE_STAT_CNT -		\
+				 ETHTOOL_A_PAUSE_STAT_TX_FRAMES)
+
 enum ethtool_multicast_groups {
 	ETHNL_MCGRP_MONITOR,
 };
diff --git a/include/linux/exportfs.h b/include/linux/exportfs.h
index 3260fe714846..fe848901fcc3 100644
--- a/include/linux/exportfs.h
+++ b/include/linux/exportfs.h
@@ -221,8 +221,6 @@ struct export_operations {
 #define EXPORT_OP_NOATOMIC_ATTR		(0x10) /* Filesystem cannot supply
 						  atomic attribute updates
 						*/
-#define EXPORT_OP_SYNC_LOCKS		(0x20) /* Filesystem can't do
-						  asychronous blocking locks */
 	unsigned long	flags;
 };
 
diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h
index eec3b7c40811..419cadcd7ff5 100644
--- a/include/linux/fanotify.h
+++ b/include/linux/fanotify.h
@@ -5,8 +5,6 @@
 #include <linux/sysctl.h>
 #include <uapi/linux/fanotify.h>
 
-extern struct ctl_table fanotify_table[]; /* for sysctl */
-
 #define FAN_GROUP_FLAG(group, flag) \
 	((group)->fanotify_data.flags & (flag))
 
@@ -25,7 +23,7 @@ extern struct ctl_table fanotify_table[]; /* for sysctl */
 
 #define FANOTIFY_CLASS_BITS	(FAN_CLASS_NOTIF | FANOTIFY_PERM_CLASSES)
 
-#define FANOTIFY_FID_BITS	(FAN_REPORT_FID | FAN_REPORT_DFID_NAME)
+#define FANOTIFY_FID_BITS	(FAN_REPORT_DFID_NAME_TARGET)
 
 #define FANOTIFY_INFO_MODES	(FANOTIFY_FID_BITS | FAN_REPORT_PIDFD)
 
@@ -82,15 +80,23 @@ extern struct ctl_table fanotify_table[]; /* for sysctl */
  * Directory entry modification events - reported only to directory
  * where entry is modified and not to a watching parent.
  */
-#define FANOTIFY_DIRENT_EVENTS	(FAN_MOVE | FAN_CREATE | FAN_DELETE)
+#define FANOTIFY_DIRENT_EVENTS	(FAN_MOVE | FAN_CREATE | FAN_DELETE | \
+				 FAN_RENAME)
+
+/* Events that can be reported with event->fd */
+#define FANOTIFY_FD_EVENTS (FANOTIFY_PATH_EVENTS | FANOTIFY_PERM_EVENTS)
 
 /* Events that can only be reported with data type FSNOTIFY_EVENT_INODE */
 #define FANOTIFY_INODE_EVENTS	(FANOTIFY_DIRENT_EVENTS | \
 				 FAN_ATTRIB | FAN_MOVE_SELF | FAN_DELETE_SELF)
 
+/* Events that can only be reported with data type FSNOTIFY_EVENT_ERROR */
+#define FANOTIFY_ERROR_EVENTS	(FAN_FS_ERROR)
+
 /* Events that user can request to be notified on */
 #define FANOTIFY_EVENTS		(FANOTIFY_PATH_EVENTS | \
-				 FANOTIFY_INODE_EVENTS)
+				 FANOTIFY_INODE_EVENTS | \
+				 FANOTIFY_ERROR_EVENTS)
 
 /* Events that require a permission response from user */
 #define FANOTIFY_PERM_EVENTS	(FAN_OPEN_PERM | FAN_ACCESS_PERM | \
diff --git a/include/linux/fault-inject.h b/include/linux/fault-inject.h
index e525f6957c49..2d04f6448cde 100644
--- a/include/linux/fault-inject.h
+++ b/include/linux/fault-inject.h
@@ -64,6 +64,8 @@ static inline struct dentry *fault_create_debugfs_attr(const char *name,
 
 struct kmem_cache;
 
+bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order);
+
 int should_failslab(struct kmem_cache *s, gfp_t gfpflags);
 #ifdef CONFIG_FAILSLAB
 extern bool __should_failslab(struct kmem_cache *s, gfp_t gfpflags);
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 5950f8f5dc74..9a77ab615c36 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -204,6 +204,7 @@ struct fb_pixmap {
 struct fb_deferred_io {
 	/* delay between mkwrite and deferred handler */
 	unsigned long delay;
+	bool sort_pagelist; /* sort pagelist by offset */
 	struct mutex lock; /* mutex that protects the page list */
 	struct list_head pagelist; /* list of touched pages */
 	/* callback */
@@ -502,6 +503,7 @@ struct fb_info {
 	} *apertures;
 
 	bool skip_vt_switch; /* no VT switch on suspend/resume required */
+	bool forced_out; /* set when being removed by another driver */
 };
 
 static inline struct apertures_struct *alloc_apertures(unsigned int max_num) {
@@ -610,6 +612,7 @@ extern int remove_conflicting_pci_framebuffers(struct pci_dev *pdev,
 					       const char *name);
 extern int remove_conflicting_framebuffers(struct apertures_struct *a,
 					   const char *name, bool primary);
+extern bool is_firmware_framebuffer(struct apertures_struct *a);
 extern int fb_prepare_logo(struct fb_info *fb_info, int rotate);
 extern int fb_show_logo(struct fb_info *fb_info, int rotate);
 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
diff --git a/include/linux/filter.h b/include/linux/filter.h
index ef03ff34234d..ed0c0ff42ad5 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -6,6 +6,7 @@
 #define __LINUX_FILTER_H__
 
 #include <linux/atomic.h>
+#include <linux/bpf.h>
 #include <linux/refcount.h>
 #include <linux/compat.h>
 #include <linux/skbuff.h>
@@ -26,7 +27,6 @@
 
 #include <asm/byteorder.h>
 #include <uapi/linux/filter.h>
-#include <uapi/linux/bpf.h>
 
 struct sk_buff;
 struct sock;
@@ -360,10 +360,9 @@ static inline bool insn_is_zext(const struct bpf_insn *insn)
 		.off   = 0,					\
 		.imm   = TGT })
 
-/* Function call */
+/* Convert function address to BPF immediate */
 
-#define BPF_CAST_CALL(x)					\
-		((u64 (*)(u64, u64, u64, u64, u64))(x))
+#define BPF_CALL_IMM(x)	((void *)(x) - (void *)__bpf_call_base)
 
 #define BPF_EMIT_CALL(FUNC)					\
 	((struct bpf_insn) {					\
@@ -371,7 +370,7 @@ static inline bool insn_is_zext(const struct bpf_insn *insn)
 		.dst_reg = 0,					\
 		.src_reg = 0,					\
 		.off   = 0,					\
-		.imm   = ((FUNC) - __bpf_call_base) })
+		.imm   = BPF_CALL_IMM(FUNC) })
 
 /* Raw code statement block */
 
@@ -549,14 +548,14 @@ struct sock_fprog_kern {
 #define BPF_IMAGE_ALIGNMENT 8
 
 struct bpf_binary_header {
-	u32 pages;
+	u32 size;
 	u8 image[] __aligned(BPF_IMAGE_ALIGNMENT);
 };
 
 struct bpf_prog_stats {
-	u64 cnt;
-	u64 nsecs;
-	u64 misses;
+	u64_stats_t cnt;
+	u64_stats_t nsecs;
+	u64_stats_t misses;
 	struct u64_stats_sync syncp;
 } __aligned(2 * sizeof(u64));
 
@@ -567,13 +566,15 @@ struct bpf_prog {
 				gpl_compatible:1, /* Is filter GPL compatible? */
 				cb_access:1,	/* Is control block accessed? */
 				dst_needed:1,	/* Do we need dst entry? */
+				blinding_requested:1, /* needs constant blinding */
 				blinded:1,	/* Was blinded */
 				is_func:1,	/* program is a bpf function */
 				kprobe_override:1, /* Do we override a kprobe? */
 				has_callchain_buf:1, /* callchain buffer allocated? */
 				enforce_expected_attach_type:1, /* Enforce expected_attach_type checking at attach time */
 				call_get_stack:1, /* Do we call bpf_get_stack() or bpf_get_stackid() */
-				call_get_func_ip:1; /* Do we call get_func_ip() */
+				call_get_func_ip:1, /* Do we call get_func_ip() */
+				tstamp_type_access:1; /* Accessed __sk_buff->tstamp_type */
 	enum bpf_prog_type	type;		/* Type of BPF program */
 	enum bpf_attach_type	expected_attach_type; /* For some prog types */
 	u32			len;		/* Number of filter blocks */
@@ -586,8 +587,10 @@ struct bpf_prog {
 	struct bpf_prog_aux	*aux;		/* Auxiliary fields */
 	struct sock_fprog_kern	*orig_prog;	/* Original BPF program */
 	/* Instructions for interpreter */
-	struct sock_filter	insns[0];
-	struct bpf_insn		insnsi[];
+	union {
+		DECLARE_FLEX_ARRAY(struct sock_filter, insns);
+		DECLARE_FLEX_ARRAY(struct bpf_insn, insnsi);
+	};
 };
 
 struct sk_filter {
@@ -613,13 +616,14 @@ static __always_inline u32 __bpf_prog_run(const struct bpf_prog *prog,
 	if (static_branch_unlikely(&bpf_stats_enabled_key)) {
 		struct bpf_prog_stats *stats;
 		u64 start = sched_clock();
+		unsigned long flags;
 
 		ret = dfunc(ctx, prog->insnsi, prog->bpf_func);
 		stats = this_cpu_ptr(prog->stats);
-		u64_stats_update_begin(&stats->syncp);
-		stats->cnt++;
-		stats->nsecs += sched_clock() - start;
-		u64_stats_update_end(&stats->syncp);
+		flags = u64_stats_update_begin_irqsave(&stats->syncp);
+		u64_stats_inc(&stats->cnt);
+		u64_stats_add(&stats->nsecs, sched_clock() - start);
+		u64_stats_update_end_irqrestore(&stats->syncp, flags);
 	} else {
 		ret = dfunc(ctx, prog->insnsi, prog->bpf_func);
 	}
@@ -638,9 +642,6 @@ static __always_inline u32 bpf_prog_run(const struct bpf_prog *prog, const void
  * This uses migrate_disable/enable() explicitly to document that the
  * invocation of a BPF program does not require reentrancy protection
  * against a BPF program which is invoked from a preempting task.
- *
- * For non RT enabled kernels migrate_disable/enable() maps to
- * preempt_disable/enable(), i.e. it disables also preemption.
  */
 static inline u32 bpf_prog_run_pin_on_cpu(const struct bpf_prog *prog,
 					  const void *ctx)
@@ -887,17 +888,8 @@ static inline void bpf_prog_lock_ro(struct bpf_prog *fp)
 static inline void bpf_jit_binary_lock_ro(struct bpf_binary_header *hdr)
 {
 	set_vm_flush_reset_perms(hdr);
-	set_memory_ro((unsigned long)hdr, hdr->pages);
-	set_memory_x((unsigned long)hdr, hdr->pages);
-}
-
-static inline struct bpf_binary_header *
-bpf_jit_binary_hdr(const struct bpf_prog *fp)
-{
-	unsigned long real_start = (unsigned long)fp->bpf_func;
-	unsigned long addr = real_start & PAGE_MASK;
-
-	return (void *)addr;
+	set_memory_ro((unsigned long)hdr, hdr->size >> PAGE_SHIFT);
+	set_memory_x((unsigned long)hdr, hdr->size >> PAGE_SHIFT);
 }
 
 int sk_filter_trim_cap(struct sock *sk, struct sk_buff *skb, unsigned int cap);
@@ -1020,6 +1012,10 @@ int xdp_do_generic_redirect(struct net_device *dev, struct sk_buff *skb,
 int xdp_do_redirect(struct net_device *dev,
 		    struct xdp_buff *xdp,
 		    struct bpf_prog *prog);
+int xdp_do_redirect_frame(struct net_device *dev,
+			  struct xdp_buff *xdp,
+			  struct xdp_frame *xdpf,
+			  struct bpf_prog *prog);
 void xdp_do_flush(void);
 
 /* The xdp_do_flush_map() helper has been renamed to drop the _map suffix, as
@@ -1028,7 +1024,7 @@ void xdp_do_flush(void);
  */
 #define xdp_do_flush_map xdp_do_flush
 
-void bpf_warn_invalid_xdp_action(u32 act);
+void bpf_warn_invalid_xdp_action(struct net_device *dev, struct bpf_prog *prog, u32 act);
 
 #ifdef CONFIG_INET
 struct sock *bpf_run_sk_reuseport(struct sock_reuseport *reuse, struct sock *sk,
@@ -1065,6 +1061,18 @@ void *bpf_jit_alloc_exec(unsigned long size);
 void bpf_jit_free_exec(void *addr);
 void bpf_jit_free(struct bpf_prog *fp);
 
+struct bpf_binary_header *
+bpf_jit_binary_pack_alloc(unsigned int proglen, u8 **ro_image,
+			  unsigned int alignment,
+			  struct bpf_binary_header **rw_hdr,
+			  u8 **rw_image,
+			  bpf_jit_fill_hole_t bpf_fill_ill_insns);
+int bpf_jit_binary_pack_finalize(struct bpf_prog *prog,
+				 struct bpf_binary_header *ro_header,
+				 struct bpf_binary_header *rw_header);
+void bpf_jit_binary_pack_free(struct bpf_binary_header *ro_header,
+			      struct bpf_binary_header *rw_header);
+
 int bpf_jit_add_poke_descriptor(struct bpf_prog *prog,
 				struct bpf_jit_poke_descriptor *poke);
 
@@ -1353,7 +1361,10 @@ struct bpf_sockopt_kern {
 	s32		level;
 	s32		optname;
 	s32		optlen;
-	s32		retval;
+	/* for retval in struct bpf_cg_run_ctx */
+	struct task_struct *current_task;
+	/* Temporary "register" for indirect stores to ppos. */
+	u64		tmp_reg;
 };
 
 int copy_bpf_fprog_from_user(struct sock_fprog *dst, sockptr_t src, int len);
@@ -1372,6 +1383,7 @@ struct bpf_sk_lookup_kern {
 		const struct in6_addr *daddr;
 	} v6;
 	struct sock	*selected_sk;
+	u32		ingress_ifindex;
 	bool		no_reuseport;
 };
 
@@ -1434,7 +1446,7 @@ extern struct static_key_false bpf_sk_lookup_enabled;
 static inline bool bpf_sk_lookup_run_v4(struct net *net, int protocol,
 					const __be32 saddr, const __be16 sport,
 					const __be32 daddr, const u16 dport,
-					struct sock **psk)
+					const int ifindex, struct sock **psk)
 {
 	struct bpf_prog_array *run_array;
 	struct sock *selected_sk = NULL;
@@ -1450,6 +1462,7 @@ static inline bool bpf_sk_lookup_run_v4(struct net *net, int protocol,
 			.v4.daddr	= daddr,
 			.sport		= sport,
 			.dport		= dport,
+			.ingress_ifindex	= ifindex,
 		};
 		u32 act;
 
@@ -1472,7 +1485,7 @@ static inline bool bpf_sk_lookup_run_v6(struct net *net, int protocol,
 					const __be16 sport,
 					const struct in6_addr *daddr,
 					const u16 dport,
-					struct sock **psk)
+					const int ifindex, struct sock **psk)
 {
 	struct bpf_prog_array *run_array;
 	struct sock *selected_sk = NULL;
@@ -1488,6 +1501,7 @@ static inline bool bpf_sk_lookup_run_v6(struct net *net, int protocol,
 			.v6.daddr	= daddr,
 			.sport		= sport,
 			.dport		= dport,
+			.ingress_ifindex	= ifindex,
 		};
 		u32 act;
 
diff --git a/include/linux/find.h b/include/linux/find.h
new file mode 100644
index 000000000000..5bb6db213bcb
--- /dev/null
+++ b/include/linux/find.h
@@ -0,0 +1,372 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_FIND_H_
+#define __LINUX_FIND_H_
+
+#ifndef __LINUX_BITMAP_H
+#error only <linux/bitmap.h> can be included directly
+#endif
+
+#include <linux/bitops.h>
+
+extern unsigned long _find_next_bit(const unsigned long *addr1,
+		const unsigned long *addr2, unsigned long nbits,
+		unsigned long start, unsigned long invert, unsigned long le);
+extern unsigned long _find_first_bit(const unsigned long *addr, unsigned long size);
+extern unsigned long _find_first_and_bit(const unsigned long *addr1,
+					 const unsigned long *addr2, unsigned long size);
+extern unsigned long _find_first_zero_bit(const unsigned long *addr, unsigned long size);
+extern unsigned long _find_last_bit(const unsigned long *addr, unsigned long size);
+
+#ifndef find_next_bit
+/**
+ * find_next_bit - find the next set bit in a memory region
+ * @addr: The address to base the search on
+ * @offset: The bitnumber to start searching at
+ * @size: The bitmap size in bits
+ *
+ * Returns the bit number for the next set bit
+ * If no bits are set, returns @size.
+ */
+static inline
+unsigned long find_next_bit(const unsigned long *addr, unsigned long size,
+			    unsigned long offset)
+{
+	if (small_const_nbits(size)) {
+		unsigned long val;
+
+		if (unlikely(offset >= size))
+			return size;
+
+		val = *addr & GENMASK(size - 1, offset);
+		return val ? __ffs(val) : size;
+	}
+
+	return _find_next_bit(addr, NULL, size, offset, 0UL, 0);
+}
+#endif
+
+#ifndef find_next_and_bit
+/**
+ * find_next_and_bit - find the next set bit in both memory regions
+ * @addr1: The first address to base the search on
+ * @addr2: The second address to base the search on
+ * @offset: The bitnumber to start searching at
+ * @size: The bitmap size in bits
+ *
+ * Returns the bit number for the next set bit
+ * If no bits are set, returns @size.
+ */
+static inline
+unsigned long find_next_and_bit(const unsigned long *addr1,
+		const unsigned long *addr2, unsigned long size,
+		unsigned long offset)
+{
+	if (small_const_nbits(size)) {
+		unsigned long val;
+
+		if (unlikely(offset >= size))
+			return size;
+
+		val = *addr1 & *addr2 & GENMASK(size - 1, offset);
+		return val ? __ffs(val) : size;
+	}
+
+	return _find_next_bit(addr1, addr2, size, offset, 0UL, 0);
+}
+#endif
+
+#ifndef find_next_zero_bit
+/**
+ * find_next_zero_bit - find the next cleared bit in a memory region
+ * @addr: The address to base the search on
+ * @offset: The bitnumber to start searching at
+ * @size: The bitmap size in bits
+ *
+ * Returns the bit number of the next zero bit
+ * If no bits are zero, returns @size.
+ */
+static inline
+unsigned long find_next_zero_bit(const unsigned long *addr, unsigned long size,
+				 unsigned long offset)
+{
+	if (small_const_nbits(size)) {
+		unsigned long val;
+
+		if (unlikely(offset >= size))
+			return size;
+
+		val = *addr | ~GENMASK(size - 1, offset);
+		return val == ~0UL ? size : ffz(val);
+	}
+
+	return _find_next_bit(addr, NULL, size, offset, ~0UL, 0);
+}
+#endif
+
+#ifndef find_first_bit
+/**
+ * find_first_bit - find the first set bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The maximum number of bits to search
+ *
+ * Returns the bit number of the first set bit.
+ * If no bits are set, returns @size.
+ */
+static inline
+unsigned long find_first_bit(const unsigned long *addr, unsigned long size)
+{
+	if (small_const_nbits(size)) {
+		unsigned long val = *addr & GENMASK(size - 1, 0);
+
+		return val ? __ffs(val) : size;
+	}
+
+	return _find_first_bit(addr, size);
+}
+#endif
+
+#ifndef find_first_and_bit
+/**
+ * find_first_and_bit - find the first set bit in both memory regions
+ * @addr1: The first address to base the search on
+ * @addr2: The second address to base the search on
+ * @size: The bitmap size in bits
+ *
+ * Returns the bit number for the next set bit
+ * If no bits are set, returns @size.
+ */
+static inline
+unsigned long find_first_and_bit(const unsigned long *addr1,
+				 const unsigned long *addr2,
+				 unsigned long size)
+{
+	if (small_const_nbits(size)) {
+		unsigned long val = *addr1 & *addr2 & GENMASK(size - 1, 0);
+
+		return val ? __ffs(val) : size;
+	}
+
+	return _find_first_and_bit(addr1, addr2, size);
+}
+#endif
+
+#ifndef find_first_zero_bit
+/**
+ * find_first_zero_bit - find the first cleared bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The maximum number of bits to search
+ *
+ * Returns the bit number of the first cleared bit.
+ * If no bits are zero, returns @size.
+ */
+static inline
+unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size)
+{
+	if (small_const_nbits(size)) {
+		unsigned long val = *addr | ~GENMASK(size - 1, 0);
+
+		return val == ~0UL ? size : ffz(val);
+	}
+
+	return _find_first_zero_bit(addr, size);
+}
+#endif
+
+#ifndef find_last_bit
+/**
+ * find_last_bit - find the last set bit in a memory region
+ * @addr: The address to start the search at
+ * @size: The number of bits to search
+ *
+ * Returns the bit number of the last set bit, or size.
+ */
+static inline
+unsigned long find_last_bit(const unsigned long *addr, unsigned long size)
+{
+	if (small_const_nbits(size)) {
+		unsigned long val = *addr & GENMASK(size - 1, 0);
+
+		return val ? __fls(val) : size;
+	}
+
+	return _find_last_bit(addr, size);
+}
+#endif
+
+/**
+ * find_next_clump8 - find next 8-bit clump with set bits in a memory region
+ * @clump: location to store copy of found clump
+ * @addr: address to base the search on
+ * @size: bitmap size in number of bits
+ * @offset: bit offset at which to start searching
+ *
+ * Returns the bit offset for the next set clump; the found clump value is
+ * copied to the location pointed by @clump. If no bits are set, returns @size.
+ */
+extern unsigned long find_next_clump8(unsigned long *clump,
+				      const unsigned long *addr,
+				      unsigned long size, unsigned long offset);
+
+#define find_first_clump8(clump, bits, size) \
+	find_next_clump8((clump), (bits), (size), 0)
+
+#if defined(__LITTLE_ENDIAN)
+
+static inline unsigned long find_next_zero_bit_le(const void *addr,
+		unsigned long size, unsigned long offset)
+{
+	return find_next_zero_bit(addr, size, offset);
+}
+
+static inline unsigned long find_next_bit_le(const void *addr,
+		unsigned long size, unsigned long offset)
+{
+	return find_next_bit(addr, size, offset);
+}
+
+static inline unsigned long find_first_zero_bit_le(const void *addr,
+		unsigned long size)
+{
+	return find_first_zero_bit(addr, size);
+}
+
+#elif defined(__BIG_ENDIAN)
+
+#ifndef find_next_zero_bit_le
+static inline
+unsigned long find_next_zero_bit_le(const void *addr, unsigned
+		long size, unsigned long offset)
+{
+	if (small_const_nbits(size)) {
+		unsigned long val = *(const unsigned long *)addr;
+
+		if (unlikely(offset >= size))
+			return size;
+
+		val = swab(val) | ~GENMASK(size - 1, offset);
+		return val == ~0UL ? size : ffz(val);
+	}
+
+	return _find_next_bit(addr, NULL, size, offset, ~0UL, 1);
+}
+#endif
+
+#ifndef find_next_bit_le
+static inline
+unsigned long find_next_bit_le(const void *addr, unsigned
+		long size, unsigned long offset)
+{
+	if (small_const_nbits(size)) {
+		unsigned long val = *(const unsigned long *)addr;
+
+		if (unlikely(offset >= size))
+			return size;
+
+		val = swab(val) & GENMASK(size - 1, offset);
+		return val ? __ffs(val) : size;
+	}
+
+	return _find_next_bit(addr, NULL, size, offset, 0UL, 1);
+}
+#endif
+
+#ifndef find_first_zero_bit_le
+#define find_first_zero_bit_le(addr, size) \
+	find_next_zero_bit_le((addr), (size), 0)
+#endif
+
+#else
+#error "Please fix <asm/byteorder.h>"
+#endif
+
+#define for_each_set_bit(bit, addr, size) \
+	for ((bit) = find_next_bit((addr), (size), 0);		\
+	     (bit) < (size);					\
+	     (bit) = find_next_bit((addr), (size), (bit) + 1))
+
+/* same as for_each_set_bit() but use bit as value to start with */
+#define for_each_set_bit_from(bit, addr, size) \
+	for ((bit) = find_next_bit((addr), (size), (bit));	\
+	     (bit) < (size);					\
+	     (bit) = find_next_bit((addr), (size), (bit) + 1))
+
+#define for_each_clear_bit(bit, addr, size) \
+	for ((bit) = find_next_zero_bit((addr), (size), 0);	\
+	     (bit) < (size);					\
+	     (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
+
+/* same as for_each_clear_bit() but use bit as value to start with */
+#define for_each_clear_bit_from(bit, addr, size) \
+	for ((bit) = find_next_zero_bit((addr), (size), (bit));	\
+	     (bit) < (size);					\
+	     (bit) = find_next_zero_bit((addr), (size), (bit) + 1))
+
+/**
+ * for_each_set_bitrange - iterate over all set bit ranges [b; e)
+ * @b: bit offset of start of current bitrange (first set bit)
+ * @e: bit offset of end of current bitrange (first unset bit)
+ * @addr: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_set_bitrange(b, e, addr, size)			\
+	for ((b) = find_next_bit((addr), (size), 0),		\
+	     (e) = find_next_zero_bit((addr), (size), (b) + 1);	\
+	     (b) < (size);					\
+	     (b) = find_next_bit((addr), (size), (e) + 1),	\
+	     (e) = find_next_zero_bit((addr), (size), (b) + 1))
+
+/**
+ * for_each_set_bitrange_from - iterate over all set bit ranges [b; e)
+ * @b: bit offset of start of current bitrange (first set bit); must be initialized
+ * @e: bit offset of end of current bitrange (first unset bit)
+ * @addr: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_set_bitrange_from(b, e, addr, size)		\
+	for ((b) = find_next_bit((addr), (size), (b)),		\
+	     (e) = find_next_zero_bit((addr), (size), (b) + 1);	\
+	     (b) < (size);					\
+	     (b) = find_next_bit((addr), (size), (e) + 1),	\
+	     (e) = find_next_zero_bit((addr), (size), (b) + 1))
+
+/**
+ * for_each_clear_bitrange - iterate over all unset bit ranges [b; e)
+ * @b: bit offset of start of current bitrange (first unset bit)
+ * @e: bit offset of end of current bitrange (first set bit)
+ * @addr: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_clear_bitrange(b, e, addr, size)		\
+	for ((b) = find_next_zero_bit((addr), (size), 0),	\
+	     (e) = find_next_bit((addr), (size), (b) + 1);	\
+	     (b) < (size);					\
+	     (b) = find_next_zero_bit((addr), (size), (e) + 1),	\
+	     (e) = find_next_bit((addr), (size), (b) + 1))
+
+/**
+ * for_each_clear_bitrange_from - iterate over all unset bit ranges [b; e)
+ * @b: bit offset of start of current bitrange (first set bit); must be initialized
+ * @e: bit offset of end of current bitrange (first unset bit)
+ * @addr: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_clear_bitrange_from(b, e, addr, size)		\
+	for ((b) = find_next_zero_bit((addr), (size), (b)),	\
+	     (e) = find_next_bit((addr), (size), (b) + 1);	\
+	     (b) < (size);					\
+	     (b) = find_next_zero_bit((addr), (size), (e) + 1),	\
+	     (e) = find_next_bit((addr), (size), (b) + 1))
+
+/**
+ * for_each_set_clump8 - iterate over bitmap for each 8-bit clump with set bits
+ * @start: bit offset to start search and to store the current iteration offset
+ * @clump: location to store copy of current 8-bit clump
+ * @bits: bitmap address to base the search on
+ * @size: bitmap size in number of bits
+ */
+#define for_each_set_clump8(start, clump, bits, size) \
+	for ((start) = find_first_clump8(&(clump), (bits), (size)); \
+	     (start) < (size); \
+	     (start) = find_next_clump8(&(clump), (bits), (size), (start) + 8))
+
+#endif /*__LINUX_FIND_H_ */
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index aec8f30ab200..07967a450eaa 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -436,6 +436,12 @@ typedef void (*fw_iso_callback_t)(struct fw_iso_context *context,
 				  void *header, void *data);
 typedef void (*fw_iso_mc_callback_t)(struct fw_iso_context *context,
 				     dma_addr_t completed, void *data);
+
+union fw_iso_callback {
+	fw_iso_callback_t sc;
+	fw_iso_mc_callback_t mc;
+};
+
 struct fw_iso_context {
 	struct fw_card *card;
 	int type;
@@ -443,10 +449,7 @@ struct fw_iso_context {
 	int speed;
 	bool drop_overflow_headers;
 	size_t header_size;
-	union {
-		fw_iso_callback_t sc;
-		fw_iso_mc_callback_t mc;
-	} callback;
+	union fw_iso_callback callback;
 	void *callback_data;
 };
 
diff --git a/include/linux/firmware.h b/include/linux/firmware.h
index 25109192cebe..ec2ccfebef65 100644
--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -20,25 +20,21 @@ struct firmware {
 struct module;
 struct device;
 
-struct builtin_fw {
-	char *name;
-	void *data;
-	unsigned long size;
-};
-
-/* We have to play tricks here much like stringify() to get the
-   __COUNTER__ macro to be expanded as we want it */
-#define __fw_concat1(x, y) x##y
-#define __fw_concat(x, y) __fw_concat1(x, y)
-
-#define DECLARE_BUILTIN_FIRMWARE(name, blob)				     \
-	DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob))
-
-#define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size)			     \
-	static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \
-	__used __section(".builtin_fw") = { name, blob, size }
+/*
+ * Built-in firmware functionality is only available if FW_LOADER=y, but not
+ * FW_LOADER=m
+ */
+#ifdef CONFIG_FW_LOADER
+bool firmware_request_builtin(struct firmware *fw, const char *name);
+#else
+static inline bool firmware_request_builtin(struct firmware *fw,
+					    const char *name)
+{
+	return false;
+}
+#endif
 
-#if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE))
+#if IS_REACHABLE(CONFIG_FW_LOADER)
 int request_firmware(const struct firmware **fw, const char *name,
 		     struct device *device);
 int firmware_request_nowarn(const struct firmware **fw, const char *name,
diff --git a/include/linux/firmware/cirrus/cs_dsp.h b/include/linux/firmware/cirrus/cs_dsp.h
new file mode 100644
index 000000000000..38b4da3ddfe4
--- /dev/null
+++ b/include/linux/firmware/cirrus/cs_dsp.h
@@ -0,0 +1,253 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * cs_dsp.h  --  Cirrus Logic DSP firmware support
+ *
+ * Based on sound/soc/codecs/wm_adsp.h
+ *
+ * Copyright 2012 Wolfson Microelectronics plc
+ * Copyright (C) 2015-2021 Cirrus Logic, Inc. and
+ *                         Cirrus Logic International Semiconductor Ltd.
+ */
+#ifndef __CS_DSP_H
+#define __CS_DSP_H
+
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/list.h>
+#include <linux/regmap.h>
+
+#define CS_ADSP2_REGION_0 BIT(0)
+#define CS_ADSP2_REGION_1 BIT(1)
+#define CS_ADSP2_REGION_2 BIT(2)
+#define CS_ADSP2_REGION_3 BIT(3)
+#define CS_ADSP2_REGION_4 BIT(4)
+#define CS_ADSP2_REGION_5 BIT(5)
+#define CS_ADSP2_REGION_6 BIT(6)
+#define CS_ADSP2_REGION_7 BIT(7)
+#define CS_ADSP2_REGION_8 BIT(8)
+#define CS_ADSP2_REGION_9 BIT(9)
+#define CS_ADSP2_REGION_1_9 (CS_ADSP2_REGION_1 | \
+		CS_ADSP2_REGION_2 | CS_ADSP2_REGION_3 | \
+		CS_ADSP2_REGION_4 | CS_ADSP2_REGION_5 | \
+		CS_ADSP2_REGION_6 | CS_ADSP2_REGION_7 | \
+		CS_ADSP2_REGION_8 | CS_ADSP2_REGION_9)
+#define CS_ADSP2_REGION_ALL (CS_ADSP2_REGION_0 | CS_ADSP2_REGION_1_9)
+
+#define CS_DSP_DATA_WORD_SIZE                3
+
+#define CS_DSP_ACKED_CTL_TIMEOUT_MS          100
+#define CS_DSP_ACKED_CTL_N_QUICKPOLLS        10
+#define CS_DSP_ACKED_CTL_MIN_VALUE           0
+#define CS_DSP_ACKED_CTL_MAX_VALUE           0xFFFFFF
+
+/**
+ * struct cs_dsp_region - Describes a logical memory region in DSP address space
+ * @type:	Memory region type
+ * @base:	Address of region
+ */
+struct cs_dsp_region {
+	int type;
+	unsigned int base;
+};
+
+/**
+ * struct cs_dsp_alg_region - Describes a logical algorithm region in DSP address space
+ * @list:	List node for internal use
+ * @alg:	Algorithm id
+ * @ver:	Expected algorithm version
+ * @type:	Memory region type
+ * @base:	Address of region
+ */
+struct cs_dsp_alg_region {
+	struct list_head list;
+	unsigned int alg;
+	unsigned int ver;
+	int type;
+	unsigned int base;
+};
+
+/**
+ * struct cs_dsp_coeff_ctl - Describes a coefficient control
+ * @fw_name:		Name of the firmware
+ * @subname:		Name of the control parsed from the WMFW
+ * @subname_len:	Length of subname
+ * @alg_region:		Logical region associated with this control
+ * @dsp:		DSP instance associated with this control
+ * @enabled:		Flag indicating whether control is enabled
+ * @list:		List node for internal use
+ * @cache:		Cached value of the control
+ * @offset:		Offset of control within alg_region in words
+ * @len:		Length of the cached value in bytes
+ * @set:		Flag indicating the value has been written by the user
+ * @flags:		Bitfield of WMFW_CTL_FLAG_ control flags defined in wmfw.h
+ * @type:		One of the WMFW_CTL_TYPE_ control types defined in wmfw.h
+ * @priv:		For use by the client
+ */
+struct cs_dsp_coeff_ctl {
+	const char *fw_name;
+	/* Subname is needed to match with firmware */
+	const char *subname;
+	unsigned int subname_len;
+	struct cs_dsp_alg_region alg_region;
+	struct cs_dsp *dsp;
+	unsigned int enabled:1;
+	struct list_head list;
+	void *cache;
+	unsigned int offset;
+	size_t len;
+	unsigned int set:1;
+	unsigned int flags;
+	unsigned int type;
+
+	void *priv;
+};
+
+struct cs_dsp_ops;
+struct cs_dsp_client_ops;
+
+/**
+ * struct cs_dsp - Configuration and state of a Cirrus Logic DSP
+ * @name:		The name of the DSP instance
+ * @rev:		Revision of the DSP
+ * @num:		DSP instance number
+ * @type:		Type of DSP
+ * @dev:		Driver model representation of the device
+ * @regmap:		Register map of the device
+ * @ops:		Function pointers for internal callbacks
+ * @client_ops:		Function pointers for client callbacks
+ * @base:		Address of the DSP registers
+ * @base_sysinfo:	Address of the sysinfo register (Halo only)
+ * @sysclk_reg:		Address of the sysclk register (ADSP1 only)
+ * @sysclk_mask:	Mask of frequency bits within sysclk register (ADSP1 only)
+ * @sysclk_shift:	Shift of frequency bits within sysclk register (ADSP1 only)
+ * @alg_regions:	List of currently loaded algorithm regions
+ * @fw_file_name:	Filename of the current firmware
+ * @fw_name:		Name of the current firmware
+ * @fw_id:		ID of the current firmware, obtained from the wmfw
+ * @fw_id_version:	Version of the firmware, obtained from the wmfw
+ * @fw_vendor_id:	Vendor of the firmware, obtained from the wmfw
+ * @mem:		DSP memory region descriptions
+ * @num_mems:		Number of memory regions in this DSP
+ * @fw_ver:		Version of the wmfw file format
+ * @booted:		Flag indicating DSP has been configured
+ * @running:		Flag indicating DSP is executing firmware
+ * @ctl_list:		Controls defined within the loaded DSP firmware
+ * @lock_regions:	Enable MPU traps on specified memory regions
+ * @pwr_lock:		Lock used to serialize accesses
+ * @debugfs_root:	Debugfs directory for this DSP instance
+ * @wmfw_file_name:	Filename of the currently loaded firmware
+ * @bin_file_name:	Filename of the currently loaded coefficients
+ */
+struct cs_dsp {
+	const char *name;
+	int rev;
+	int num;
+	int type;
+	struct device *dev;
+	struct regmap *regmap;
+
+	const struct cs_dsp_ops *ops;
+	const struct cs_dsp_client_ops *client_ops;
+
+	unsigned int base;
+	unsigned int base_sysinfo;
+	unsigned int sysclk_reg;
+	unsigned int sysclk_mask;
+	unsigned int sysclk_shift;
+
+	struct list_head alg_regions;
+
+	const char *fw_name;
+	unsigned int fw_id;
+	unsigned int fw_id_version;
+	unsigned int fw_vendor_id;
+
+	const struct cs_dsp_region *mem;
+	int num_mems;
+
+	int fw_ver;
+
+	bool booted;
+	bool running;
+
+	struct list_head ctl_list;
+
+	struct mutex pwr_lock;
+
+	unsigned int lock_regions;
+
+#ifdef CONFIG_DEBUG_FS
+	struct dentry *debugfs_root;
+	char *wmfw_file_name;
+	char *bin_file_name;
+#endif
+};
+
+/**
+ * struct cs_dsp_client_ops - client callbacks
+ * @control_add:	Called under the pwr_lock when a control is created
+ * @control_remove:	Called under the pwr_lock when a control is destroyed
+ * @pre_run:		Called under the pwr_lock by cs_dsp_run() before the core is started
+ * @post_run:		Called under the pwr_lock by cs_dsp_run() after the core is started
+ * @post_stop:		Called under the pwr_lock by cs_dsp_stop()
+ * @watchdog_expired:	Called when a watchdog expiry is detected
+ *
+ * These callbacks give the cs_dsp client an opportunity to respond to events
+ * or to perform actions atomically.
+ */
+struct cs_dsp_client_ops {
+	int (*control_add)(struct cs_dsp_coeff_ctl *ctl);
+	void (*control_remove)(struct cs_dsp_coeff_ctl *ctl);
+	int (*pre_run)(struct cs_dsp *dsp);
+	int (*post_run)(struct cs_dsp *dsp);
+	void (*post_stop)(struct cs_dsp *dsp);
+	void (*watchdog_expired)(struct cs_dsp *dsp);
+};
+
+int cs_dsp_adsp1_init(struct cs_dsp *dsp);
+int cs_dsp_adsp2_init(struct cs_dsp *dsp);
+int cs_dsp_halo_init(struct cs_dsp *dsp);
+
+int cs_dsp_adsp1_power_up(struct cs_dsp *dsp,
+			  const struct firmware *wmfw_firmware, char *wmfw_filename,
+			  const struct firmware *coeff_firmware, char *coeff_filename,
+			  const char *fw_name);
+void cs_dsp_adsp1_power_down(struct cs_dsp *dsp);
+int cs_dsp_power_up(struct cs_dsp *dsp,
+		    const struct firmware *wmfw_firmware, char *wmfw_filename,
+		    const struct firmware *coeff_firmware, char *coeff_filename,
+		    const char *fw_name);
+void cs_dsp_power_down(struct cs_dsp *dsp);
+int cs_dsp_run(struct cs_dsp *dsp);
+void cs_dsp_stop(struct cs_dsp *dsp);
+
+void cs_dsp_remove(struct cs_dsp *dsp);
+
+int cs_dsp_set_dspclk(struct cs_dsp *dsp, unsigned int freq);
+void cs_dsp_adsp2_bus_error(struct cs_dsp *dsp);
+void cs_dsp_halo_bus_error(struct cs_dsp *dsp);
+void cs_dsp_halo_wdt_expire(struct cs_dsp *dsp);
+
+void cs_dsp_init_debugfs(struct cs_dsp *dsp, struct dentry *debugfs_root);
+void cs_dsp_cleanup_debugfs(struct cs_dsp *dsp);
+
+int cs_dsp_coeff_write_acked_control(struct cs_dsp_coeff_ctl *ctl, unsigned int event_id);
+int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl, unsigned int off,
+			    const void *buf, size_t len);
+int cs_dsp_coeff_read_ctrl(struct cs_dsp_coeff_ctl *ctl, unsigned int off,
+			   void *buf, size_t len);
+struct cs_dsp_coeff_ctl *cs_dsp_get_ctl(struct cs_dsp *dsp, const char *name, int type,
+					unsigned int alg);
+
+int cs_dsp_read_raw_data_block(struct cs_dsp *dsp, int mem_type, unsigned int mem_addr,
+			       unsigned int num_words, __be32 *data);
+int cs_dsp_read_data_word(struct cs_dsp *dsp, int mem_type, unsigned int mem_addr, u32 *data);
+int cs_dsp_write_data_word(struct cs_dsp *dsp, int mem_type, unsigned int mem_addr, u32 data);
+void cs_dsp_remove_padding(u32 *buf, int nwords);
+
+struct cs_dsp_alg_region *cs_dsp_find_alg_region(struct cs_dsp *dsp,
+						 int type, unsigned int id);
+
+const char *cs_dsp_mem_region_name(unsigned int type);
+
+#endif
diff --git a/include/linux/firmware/cirrus/wmfw.h b/include/linux/firmware/cirrus/wmfw.h
new file mode 100644
index 000000000000..74e5a4f6c13a
--- /dev/null
+++ b/include/linux/firmware/cirrus/wmfw.h
@@ -0,0 +1,203 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * wmfw.h - Wolfson firmware format information
+ *
+ * Copyright 2012 Wolfson Microelectronics plc
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ */
+
+#ifndef __WMFW_H
+#define __WMFW_H
+
+#include <linux/types.h>
+
+#define WMFW_MAX_ALG_NAME         256
+#define WMFW_MAX_ALG_DESCR_NAME   256
+
+#define WMFW_MAX_COEFF_NAME       256
+#define WMFW_MAX_COEFF_DESCR_NAME 256
+
+#define WMFW_CTL_FLAG_SYS         0x8000
+#define WMFW_CTL_FLAG_VOLATILE    0x0004
+#define WMFW_CTL_FLAG_WRITEABLE   0x0002
+#define WMFW_CTL_FLAG_READABLE    0x0001
+
+#define WMFW_CTL_TYPE_BYTES       0x0004 /* byte control */
+
+/* Non-ALSA coefficient types start at 0x1000 */
+#define WMFW_CTL_TYPE_ACKED       0x1000 /* acked control */
+#define WMFW_CTL_TYPE_HOSTEVENT   0x1001 /* event control */
+#define WMFW_CTL_TYPE_HOST_BUFFER 0x1002 /* host buffer pointer */
+#define WMFW_CTL_TYPE_FWEVENT     0x1004 /* firmware event control */
+
+struct wmfw_header {
+	char magic[4];
+	__le32 len;
+	__le16 rev;
+	u8 core;
+	u8 ver;
+} __packed;
+
+struct wmfw_footer {
+	__le64 timestamp;
+	__le32 checksum;
+} __packed;
+
+struct wmfw_adsp1_sizes {
+	__le32 dm;
+	__le32 pm;
+	__le32 zm;
+} __packed;
+
+struct wmfw_adsp2_sizes {
+	__le32 xm;
+	__le32 ym;
+	__le32 pm;
+	__le32 zm;
+} __packed;
+
+struct wmfw_region {
+	union {
+		__be32 type;
+		__le32 offset;
+	};
+	__le32 len;
+	u8 data[];
+} __packed;
+
+struct wmfw_id_hdr {
+	__be32 core_id;
+	__be32 core_rev;
+	__be32 id;
+	__be32 ver;
+} __packed;
+
+struct wmfw_v3_id_hdr {
+	__be32 core_id;
+	__be32 block_rev;
+	__be32 vendor_id;
+	__be32 id;
+	__be32 ver;
+} __packed;
+
+struct wmfw_adsp1_id_hdr {
+	struct wmfw_id_hdr fw;
+	__be32 zm;
+	__be32 dm;
+	__be32 n_algs;
+} __packed;
+
+struct wmfw_adsp2_id_hdr {
+	struct wmfw_id_hdr fw;
+	__be32 zm;
+	__be32 xm;
+	__be32 ym;
+	__be32 n_algs;
+} __packed;
+
+struct wmfw_halo_id_hdr {
+	struct wmfw_v3_id_hdr fw;
+	__be32 xm_base;
+	__be32 xm_size;
+	__be32 ym_base;
+	__be32 ym_size;
+	__be32 n_algs;
+} __packed;
+
+struct wmfw_alg_hdr {
+	__be32 id;
+	__be32 ver;
+} __packed;
+
+struct wmfw_adsp1_alg_hdr {
+	struct wmfw_alg_hdr alg;
+	__be32 zm;
+	__be32 dm;
+} __packed;
+
+struct wmfw_adsp2_alg_hdr {
+	struct wmfw_alg_hdr alg;
+	__be32 zm;
+	__be32 xm;
+	__be32 ym;
+} __packed;
+
+struct wmfw_halo_alg_hdr {
+	struct wmfw_alg_hdr alg;
+	__be32 xm_base;
+	__be32 xm_size;
+	__be32 ym_base;
+	__be32 ym_size;
+} __packed;
+
+struct wmfw_adsp_alg_data {
+	__le32 id;
+	u8 name[WMFW_MAX_ALG_NAME];
+	u8 descr[WMFW_MAX_ALG_DESCR_NAME];
+	__le32 ncoeff;
+	u8 data[];
+} __packed;
+
+struct wmfw_adsp_coeff_data {
+	struct {
+		__le16 offset;
+		__le16 type;
+		__le32 size;
+	} hdr;
+	u8 name[WMFW_MAX_COEFF_NAME];
+	u8 descr[WMFW_MAX_COEFF_DESCR_NAME];
+	__le16 ctl_type;
+	__le16 flags;
+	__le32 len;
+	u8 data[];
+} __packed;
+
+struct wmfw_coeff_hdr {
+	u8 magic[4];
+	__le32 len;
+	union {
+		__be32 rev;
+		__le32 ver;
+	};
+	union {
+		__be32 core;
+		__le32 core_ver;
+	};
+	u8 data[];
+} __packed;
+
+struct wmfw_coeff_item {
+	__le16 offset;
+	__le16 type;
+	__le32 id;
+	__le32 ver;
+	__le32 sr;
+	__le32 len;
+	u8 data[];
+} __packed;
+
+#define WMFW_ADSP1 1
+#define WMFW_ADSP2 2
+#define WMFW_HALO 4
+
+#define WMFW_ABSOLUTE         0xf0
+#define WMFW_ALGORITHM_DATA   0xf2
+#define WMFW_METADATA         0xfc
+#define WMFW_NAME_TEXT        0xfe
+#define WMFW_INFO_TEXT        0xff
+
+#define WMFW_ADSP1_PM 2
+#define WMFW_ADSP1_DM 3
+#define WMFW_ADSP1_ZM 4
+
+#define WMFW_ADSP2_PM 2
+#define WMFW_ADSP2_ZM 4
+#define WMFW_ADSP2_XM 5
+#define WMFW_ADSP2_YM 6
+
+#define WMFW_HALO_PM_PACKED 0x10
+#define WMFW_HALO_XM_PACKED 0x11
+#define WMFW_HALO_YM_PACKED 0x12
+
+#endif
diff --git a/include/linux/firmware/imx/s4.h b/include/linux/firmware/imx/s4.h
new file mode 100644
index 000000000000..9e34923ae1d6
--- /dev/null
+++ b/include/linux/firmware/imx/s4.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2021 NXP
+ *
+ * Header file for the IPC implementation.
+ */
+
+#ifndef _S4_IPC_H
+#define _S4_IPC_H
+
+struct imx_s4_ipc;
+
+struct imx_s4_rpc_msg {
+	uint8_t ver;
+	uint8_t size;
+	uint8_t cmd;
+	uint8_t tag;
+} __packed;
+
+#endif /* _S4_IPC_H */
diff --git a/include/linux/firmware/imx/svc/rm.h b/include/linux/firmware/imx/svc/rm.h
index 456b6a59d29b..31456f897aa9 100644
--- a/include/linux/firmware/imx/svc/rm.h
+++ b/include/linux/firmware/imx/svc/rm.h
@@ -59,11 +59,16 @@ enum imx_sc_rm_func {
 
 #if IS_ENABLED(CONFIG_IMX_SCU)
 bool imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource);
+int imx_sc_rm_get_resource_owner(struct imx_sc_ipc *ipc, u16 resource, u8 *pt);
 #else
 static inline bool
 imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource)
 {
 	return true;
 }
+static inline int imx_sc_rm_get_resource_owner(struct imx_sc_ipc *ipc, u16 resource, u8 *pt)
+{
+	return -EOPNOTSUPP;
+}
 #endif
 #endif
diff --git a/include/linux/firmware/intel/stratix10-smc.h b/include/linux/firmware/intel/stratix10-smc.h
index c3e5ab014caf..aad497a9ad8b 100644
--- a/include/linux/firmware/intel/stratix10-smc.h
+++ b/include/linux/firmware/intel/stratix10-smc.h
@@ -321,8 +321,6 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
 #define INTEL_SIP_SMC_ECC_DBE \
 	INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_ECC_DBE)
 
-#endif
-
 /**
  * Request INTEL_SIP_SMC_RSU_NOTIFY
  *
@@ -404,3 +402,22 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
 #define INTEL_SIP_SMC_FUNCID_RSU_MAX_RETRY 18
 #define INTEL_SIP_SMC_RSU_MAX_RETRY \
 	INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_RSU_MAX_RETRY)
+
+/**
+ * Request INTEL_SIP_SMC_FIRMWARE_VERSION
+ *
+ * Sync call used to query the version of running firmware
+ *
+ * Call register usage:
+ * a0 INTEL_SIP_SMC_FIRMWARE_VERSION
+ * a1-a7 not used
+ *
+ * Return status:
+ * a0 INTEL_SIP_SMC_STATUS_OK or INTEL_SIP_SMC_STATUS_ERROR
+ * a1 running firmware version
+ */
+#define INTEL_SIP_SMC_FUNCID_FIRMWARE_VERSION 31
+#define INTEL_SIP_SMC_FIRMWARE_VERSION \
+        INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FIRMWARE_VERSION)
+
+#endif
diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h
index 19781b0f6429..18c1841fdb1f 100644
--- a/include/linux/firmware/intel/stratix10-svc-client.h
+++ b/include/linux/firmware/intel/stratix10-svc-client.h
@@ -104,6 +104,9 @@ struct stratix10_svc_chan;
  *
  * @COMMAND_RSU_DCMF_VERSION: query firmware for the DCMF version, return status
  * is SVC_STATUS_OK or SVC_STATUS_ERROR
+ *
+ * @COMMAND_FIRMWARE_VERSION: query running firmware version, return status
+ * is SVC_STATUS_OK or SVC_STATUS_ERROR
  */
 enum stratix10_svc_command_code {
 	COMMAND_NOOP = 0,
@@ -117,6 +120,7 @@ enum stratix10_svc_command_code {
 	COMMAND_RSU_RETRY,
 	COMMAND_RSU_MAX_RETRY,
 	COMMAND_RSU_DCMF_VERSION,
+	COMMAND_FIRMWARE_VERSION,
 };
 
 /**
diff --git a/include/linux/firmware/xlnx-event-manager.h b/include/linux/firmware/xlnx-event-manager.h
new file mode 100644
index 000000000000..3f87c4929d21
--- /dev/null
+++ b/include/linux/firmware/xlnx-event-manager.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _FIRMWARE_XLNX_EVENT_MANAGER_H_
+#define _FIRMWARE_XLNX_EVENT_MANAGER_H_
+
+#include <linux/firmware/xlnx-zynqmp.h>
+
+#define CB_MAX_PAYLOAD_SIZE	(4U) /*In payload maximum 32bytes */
+
+/************************** Exported Function *****************************/
+
+typedef void (*event_cb_func_t)(const u32 *payload, void *data);
+
+#if IS_REACHABLE(CONFIG_XLNX_EVENT_MANAGER)
+int xlnx_register_event(const enum pm_api_cb_id cb_type, const u32 node_id,
+			const u32 event, const bool wake,
+			event_cb_func_t cb_fun, void *data);
+
+int xlnx_unregister_event(const enum pm_api_cb_id cb_type, const u32 node_id,
+			  const u32 event, event_cb_func_t cb_fun);
+#else
+static inline int xlnx_register_event(const enum pm_api_cb_id cb_type, const u32 node_id,
+				      const u32 event, const bool wake,
+				      event_cb_func_t cb_fun, void *data)
+{
+	return -ENODEV;
+}
+
+static inline int xlnx_unregister_event(const enum pm_api_cb_id cb_type, const u32 node_id,
+					 const u32 event, event_cb_func_t cb_fun)
+{
+	return -ENODEV;
+}
+#endif
+
+#endif /* _FIRMWARE_XLNX_EVENT_MANAGER_H_ */
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 56b426fe020c..14f00a7672d1 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -2,7 +2,7 @@
 /*
  * Xilinx Zynq MPSoC Firmware layer
  *
- *  Copyright (C) 2014-2019 Xilinx
+ *  Copyright (C) 2014-2021 Xilinx
  *
  *  Michal Simek <michal.simek@xilinx.com>
  *  Davorin Mista <davorin.mista@aggios.com>
@@ -64,18 +64,36 @@
 #define XILINX_ZYNQMP_PM_FPGA_FULL	0x0U
 #define XILINX_ZYNQMP_PM_FPGA_PARTIAL	BIT(0)
 
+/*
+ * Node IDs for the Error Events.
+ */
+#define EVENT_ERROR_PMC_ERR1	(0x28100000U)
+#define EVENT_ERROR_PMC_ERR2	(0x28104000U)
+#define EVENT_ERROR_PSM_ERR1	(0x28108000U)
+#define EVENT_ERROR_PSM_ERR2	(0x2810C000U)
+
+enum pm_api_cb_id {
+	PM_INIT_SUSPEND_CB = 30,
+	PM_ACKNOWLEDGE_CB = 31,
+	PM_NOTIFY_CB = 32,
+};
+
 enum pm_api_id {
 	PM_GET_API_VERSION = 1,
+	PM_REGISTER_NOTIFIER = 5,
 	PM_SYSTEM_SHUTDOWN = 12,
 	PM_REQUEST_NODE = 13,
 	PM_RELEASE_NODE = 14,
 	PM_SET_REQUIREMENT = 15,
 	PM_RESET_ASSERT = 17,
 	PM_RESET_GET_STATUS = 18,
+	PM_MMIO_WRITE = 19,
+	PM_MMIO_READ = 20,
 	PM_PM_INIT_FINALIZE = 21,
 	PM_FPGA_LOAD = 22,
 	PM_FPGA_GET_STATUS = 23,
 	PM_GET_CHIPID = 24,
+	PM_SECURE_SHA = 26,
 	PM_PINCTRL_REQUEST = 28,
 	PM_PINCTRL_RELEASE = 29,
 	PM_PINCTRL_GET_FUNCTION = 30,
@@ -123,6 +141,12 @@ enum pm_ioctl_id {
 	IOCTL_READ_PGGS = 15,
 	/* Set healthy bit value */
 	IOCTL_SET_BOOT_HEALTH_STATUS = 17,
+	IOCTL_OSPI_MUX_SELECT = 21,
+	/* Register SGI to ATF */
+	IOCTL_REGISTER_SGI = 25,
+	/* Runtime feature configuration */
+	IOCTL_SET_FEATURE_CONFIG = 26,
+	IOCTL_GET_FEATURE_CONFIG = 27,
 };
 
 enum pm_query_id {
@@ -351,6 +375,19 @@ enum zynqmp_pm_shutdown_subtype {
 	ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM = 2,
 };
 
+enum ospi_mux_select_type {
+	PM_OSPI_MUX_SEL_DMA = 0,
+	PM_OSPI_MUX_SEL_LINEAR = 1,
+};
+
+enum pm_feature_config_id {
+	PM_FEATURE_INVALID = 0,
+	PM_FEATURE_OVERTEMP_STATUS = 1,
+	PM_FEATURE_OVERTEMP_VALUE = 2,
+	PM_FEATURE_EXTWDT_STATUS = 3,
+	PM_FEATURE_EXTWDT_VALUE = 4,
+};
+
 /**
  * struct zynqmp_pm_query_data - PM query data
  * @qid:	query ID
@@ -387,9 +424,12 @@ int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data);
 int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data);
 int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value);
 int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type);
+int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select);
 int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
 			   const enum zynqmp_pm_reset_action assert_flag);
 int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset, u32 *status);
+unsigned int zynqmp_pm_bootmode_read(u32 *ps_mode);
+int zynqmp_pm_bootmode_write(u32 ps_mode);
 int zynqmp_pm_init_finalize(void);
 int zynqmp_pm_set_suspend_mode(u32 mode);
 int zynqmp_pm_request_node(const u32 node, const u32 capabilities,
@@ -399,6 +439,7 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
 			      const u32 qos,
 			      const enum zynqmp_pm_request_ack ack);
 int zynqmp_pm_aes_engine(const u64 address, u32 *out);
+int zynqmp_pm_sha_hash(const u64 address, const u32 size, const u32 flags);
 int zynqmp_pm_fpga_load(const u64 address, const u32 size, const u32 flags);
 int zynqmp_pm_fpga_get_status(u32 *value);
 int zynqmp_pm_write_ggs(u32 index, u32 value);
@@ -416,6 +457,11 @@ int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param,
 int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
 				 u32 value);
 int zynqmp_pm_load_pdi(const u32 src, const u64 address);
+int zynqmp_pm_register_notifier(const u32 node, const u32 event,
+				const u32 wake, const u32 enable);
+int zynqmp_pm_feature(const u32 api_id);
+int zynqmp_pm_set_feature_config(enum pm_feature_config_id id, u32 value);
+int zynqmp_pm_get_feature_config(enum pm_feature_config_id id, u32 *payload);
 #else
 static inline int zynqmp_pm_get_api_version(u32 *version)
 {
@@ -508,6 +554,11 @@ static inline int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type)
 	return -ENODEV;
 }
 
+static inline int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select)
+{
+	return -ENODEV;
+}
+
 static inline int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset,
 					 const enum zynqmp_pm_reset_action assert_flag)
 {
@@ -520,6 +571,16 @@ static inline int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
 	return -ENODEV;
 }
 
+static inline unsigned int zynqmp_pm_bootmode_read(u32 *ps_mode)
+{
+	return -ENODEV;
+}
+
+static inline int zynqmp_pm_bootmode_write(u32 ps_mode)
+{
+	return -ENODEV;
+}
+
 static inline int zynqmp_pm_init_finalize(void)
 {
 	return -ENODEV;
@@ -555,6 +616,12 @@ static inline int zynqmp_pm_aes_engine(const u64 address, u32 *out)
 	return -ENODEV;
 }
 
+static inline int zynqmp_pm_sha_hash(const u64 address, const u32 size,
+				     const u32 flags)
+{
+	return -ENODEV;
+}
+
 static inline int zynqmp_pm_fpga_load(const u64 address, const u32 size,
 				      const u32 flags)
 {
@@ -632,6 +699,29 @@ static inline int zynqmp_pm_load_pdi(const u32 src, const u64 address)
 {
 	return -ENODEV;
 }
+
+static inline int zynqmp_pm_register_notifier(const u32 node, const u32 event,
+					      const u32 wake, const u32 enable)
+{
+	return -ENODEV;
+}
+
+static inline int zynqmp_pm_feature(const u32 api_id)
+{
+	return -ENODEV;
+}
+
+static inline int zynqmp_pm_set_feature_config(enum pm_feature_config_id id,
+					       u32 value)
+{
+	return -ENODEV;
+}
+
+static inline int zynqmp_pm_get_feature_config(enum pm_feature_config_id id,
+					       u32 *payload)
+{
+	return -ENODEV;
+}
 #endif
 
 #endif /* __FIRMWARE_ZYNQMP_H__ */
diff --git a/include/linux/flex_proportions.h b/include/linux/flex_proportions.h
index c12df59d3f5f..3e378b1fb0bc 100644
--- a/include/linux/flex_proportions.h
+++ b/include/linux/flex_proportions.h
@@ -83,9 +83,10 @@ struct fprop_local_percpu {
 
 int fprop_local_init_percpu(struct fprop_local_percpu *pl, gfp_t gfp);
 void fprop_local_destroy_percpu(struct fprop_local_percpu *pl);
-void __fprop_inc_percpu(struct fprop_global *p, struct fprop_local_percpu *pl);
-void __fprop_inc_percpu_max(struct fprop_global *p, struct fprop_local_percpu *pl,
-			    int max_frac);
+void __fprop_add_percpu(struct fprop_global *p, struct fprop_local_percpu *pl,
+		long nr);
+void __fprop_add_percpu_max(struct fprop_global *p,
+		struct fprop_local_percpu *pl, int max_frac, long nr);
 void fprop_fraction_percpu(struct fprop_global *p,
 	struct fprop_local_percpu *pl, unsigned long *numerator,
 	unsigned long *denominator);
@@ -96,7 +97,7 @@ void fprop_inc_percpu(struct fprop_global *p, struct fprop_local_percpu *pl)
 	unsigned long flags;
 
 	local_irq_save(flags);
-	__fprop_inc_percpu(p, pl);
+	__fprop_add_percpu(p, pl, 1);
 	local_irq_restore(flags);
 }
 
diff --git a/include/linux/fortify-string.h b/include/linux/fortify-string.h
index c1be37437e77..295637a66c46 100644
--- a/include/linux/fortify-string.h
+++ b/include/linux/fortify-string.h
@@ -2,6 +2,31 @@
 #ifndef _LINUX_FORTIFY_STRING_H_
 #define _LINUX_FORTIFY_STRING_H_
 
+#include <linux/const.h>
+
+#define __FORTIFY_INLINE extern __always_inline __gnu_inline __overloadable
+#define __RENAME(x) __asm__(#x)
+
+void fortify_panic(const char *name) __noreturn __cold;
+void __read_overflow(void) __compiletime_error("detected read beyond size of object (1st parameter)");
+void __read_overflow2(void) __compiletime_error("detected read beyond size of object (2nd parameter)");
+void __read_overflow2_field(size_t avail, size_t wanted) __compiletime_warning("detected read beyond size of field (2nd parameter); maybe use struct_group()?");
+void __write_overflow(void) __compiletime_error("detected write beyond size of object (1st parameter)");
+void __write_overflow_field(size_t avail, size_t wanted) __compiletime_warning("detected write beyond size of field (1st parameter); maybe use struct_group()?");
+
+#define __compiletime_strlen(p)					\
+({								\
+	unsigned char *__p = (unsigned char *)(p);		\
+	size_t __ret = (size_t)-1;				\
+	size_t __p_size = __builtin_object_size(p, 1);		\
+	if (__p_size != (size_t)-1) {				\
+		size_t __p_len = __p_size - 1;			\
+		if (__builtin_constant_p(__p[__p_len]) &&	\
+		    __p[__p_len] == '\0')			\
+			__ret = __builtin_strlen(__p);		\
+	}							\
+	__ret;							\
+})
 
 #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
 extern void *__underlying_memchr(const void *p, int c, __kernel_size_t size) __RENAME(memchr);
@@ -27,7 +52,17 @@ extern char *__underlying_strncpy(char *p, const char *q, __kernel_size_t size)
 #define __underlying_strncpy	__builtin_strncpy
 #endif
 
-__FORTIFY_INLINE char *strncpy(char *p, const char *q, __kernel_size_t size)
+/*
+ * Clang's use of __builtin_object_size() within inlines needs hinting via
+ * __pass_object_size(). The preference is to only ever use type 1 (member
+ * size, rather than struct size), but there remain some stragglers using
+ * type 0 that will be converted in the future.
+ */
+#define POS	__pass_object_size(1)
+#define POS0	__pass_object_size(0)
+
+__FORTIFY_INLINE __diagnose_as(__builtin_strncpy, 1, 2, 3)
+char *strncpy(char * const POS p, const char *q, __kernel_size_t size)
 {
 	size_t p_size = __builtin_object_size(p, 1);
 
@@ -38,7 +73,8 @@ __FORTIFY_INLINE char *strncpy(char *p, const char *q, __kernel_size_t size)
 	return __underlying_strncpy(p, q, size);
 }
 
-__FORTIFY_INLINE char *strcat(char *p, const char *q)
+__FORTIFY_INLINE __diagnose_as(__builtin_strcat, 1, 2)
+char *strcat(char * const POS p, const char *q)
 {
 	size_t p_size = __builtin_object_size(p, 1);
 
@@ -49,59 +85,80 @@ __FORTIFY_INLINE char *strcat(char *p, const char *q)
 	return p;
 }
 
-__FORTIFY_INLINE __kernel_size_t strlen(const char *p)
+extern __kernel_size_t __real_strnlen(const char *, __kernel_size_t) __RENAME(strnlen);
+__FORTIFY_INLINE __kernel_size_t strnlen(const char * const POS p, __kernel_size_t maxlen)
 {
-	__kernel_size_t ret;
 	size_t p_size = __builtin_object_size(p, 1);
+	size_t p_len = __compiletime_strlen(p);
+	size_t ret;
 
-	/* Work around gcc excess stack consumption issue */
-	if (p_size == (size_t)-1 ||
-		(__builtin_constant_p(p[p_size - 1]) && p[p_size - 1] == '\0'))
-		return __underlying_strlen(p);
-	ret = strnlen(p, p_size);
-	if (p_size <= ret)
+	/* We can take compile-time actions when maxlen is const. */
+	if (__builtin_constant_p(maxlen) && p_len != (size_t)-1) {
+		/* If p is const, we can use its compile-time-known len. */
+		if (maxlen >= p_size)
+			return p_len;
+	}
+
+	/* Do not check characters beyond the end of p. */
+	ret = __real_strnlen(p, maxlen < p_size ? maxlen : p_size);
+	if (p_size <= ret && maxlen != ret)
 		fortify_panic(__func__);
 	return ret;
 }
 
-extern __kernel_size_t __real_strnlen(const char *, __kernel_size_t) __RENAME(strnlen);
-__FORTIFY_INLINE __kernel_size_t strnlen(const char *p, __kernel_size_t maxlen)
+/*
+ * Defined after fortified strnlen to reuse it. However, it must still be
+ * possible for strlen() to be used on compile-time strings for use in
+ * static initializers (i.e. as a constant expression).
+ */
+#define strlen(p)							\
+	__builtin_choose_expr(__is_constexpr(__builtin_strlen(p)),	\
+		__builtin_strlen(p), __fortify_strlen(p))
+__FORTIFY_INLINE __diagnose_as(__builtin_strlen, 1)
+__kernel_size_t __fortify_strlen(const char * const POS p)
 {
+	__kernel_size_t ret;
 	size_t p_size = __builtin_object_size(p, 1);
-	__kernel_size_t ret = __real_strnlen(p, maxlen < p_size ? maxlen : p_size);
 
-	if (p_size <= ret && maxlen != ret)
+	/* Give up if we don't know how large p is. */
+	if (p_size == (size_t)-1)
+		return __underlying_strlen(p);
+	ret = strnlen(p, p_size);
+	if (p_size <= ret)
 		fortify_panic(__func__);
 	return ret;
 }
 
 /* defined after fortified strlen to reuse it */
 extern size_t __real_strlcpy(char *, const char *, size_t) __RENAME(strlcpy);
-__FORTIFY_INLINE size_t strlcpy(char *p, const char *q, size_t size)
+__FORTIFY_INLINE size_t strlcpy(char * const POS p, const char * const POS q, size_t size)
 {
-	size_t ret;
 	size_t p_size = __builtin_object_size(p, 1);
 	size_t q_size = __builtin_object_size(q, 1);
+	size_t q_len;	/* Full count of source string length. */
+	size_t len;	/* Count of characters going into destination. */
 
 	if (p_size == (size_t)-1 && q_size == (size_t)-1)
 		return __real_strlcpy(p, q, size);
-	ret = strlen(q);
-	if (size) {
-		size_t len = (ret >= size) ? size - 1 : ret;
-
-		if (__builtin_constant_p(len) && len >= p_size)
+	q_len = strlen(q);
+	len = (q_len >= size) ? size - 1 : q_len;
+	if (__builtin_constant_p(size) && __builtin_constant_p(q_len) && size) {
+		/* Write size is always larger than destination. */
+		if (len >= p_size)
 			__write_overflow();
+	}
+	if (size) {
 		if (len >= p_size)
 			fortify_panic(__func__);
 		__underlying_memcpy(p, q, len);
 		p[len] = '\0';
 	}
-	return ret;
+	return q_len;
 }
 
 /* defined after fortified strnlen to reuse it */
 extern ssize_t __real_strscpy(char *, const char *, size_t) __RENAME(strscpy);
-__FORTIFY_INLINE ssize_t strscpy(char *p, const char *q, size_t size)
+__FORTIFY_INLINE ssize_t strscpy(char * const POS p, const char * const POS q, size_t size)
 {
 	size_t len;
 	/* Use string size rather than possible enclosing struct size. */
@@ -147,7 +204,8 @@ __FORTIFY_INLINE ssize_t strscpy(char *p, const char *q, size_t size)
 }
 
 /* defined after fortified strlen and strnlen to reuse them */
-__FORTIFY_INLINE char *strncat(char *p, const char *q, __kernel_size_t count)
+__FORTIFY_INLINE __diagnose_as(__builtin_strncat, 1, 2, 3)
+char *strncat(char * const POS p, const char * const POS q, __kernel_size_t count)
 {
 	size_t p_len, copy_len;
 	size_t p_size = __builtin_object_size(p, 1);
@@ -164,51 +222,161 @@ __FORTIFY_INLINE char *strncat(char *p, const char *q, __kernel_size_t count)
 	return p;
 }
 
-__FORTIFY_INLINE void *memset(void *p, int c, __kernel_size_t size)
-{
-	size_t p_size = __builtin_object_size(p, 0);
-
-	if (__builtin_constant_p(size) && p_size < size)
-		__write_overflow();
-	if (p_size < size)
-		fortify_panic(__func__);
-	return __underlying_memset(p, c, size);
-}
-
-__FORTIFY_INLINE void *memcpy(void *p, const void *q, __kernel_size_t size)
+__FORTIFY_INLINE void fortify_memset_chk(__kernel_size_t size,
+					 const size_t p_size,
+					 const size_t p_size_field)
 {
-	size_t p_size = __builtin_object_size(p, 0);
-	size_t q_size = __builtin_object_size(q, 0);
-
 	if (__builtin_constant_p(size)) {
-		if (p_size < size)
+		/*
+		 * Length argument is a constant expression, so we
+		 * can perform compile-time bounds checking where
+		 * buffer sizes are known.
+		 */
+
+		/* Error when size is larger than enclosing struct. */
+		if (p_size > p_size_field && p_size < size)
 			__write_overflow();
-		if (q_size < size)
-			__read_overflow2();
+
+		/* Warn when write size is larger than dest field. */
+		if (p_size_field < size)
+			__write_overflow_field(p_size_field, size);
 	}
-	if (p_size < size || q_size < size)
-		fortify_panic(__func__);
-	return __underlying_memcpy(p, q, size);
+	/*
+	 * At this point, length argument may not be a constant expression,
+	 * so run-time bounds checking can be done where buffer sizes are
+	 * known. (This is not an "else" because the above checks may only
+	 * be compile-time warnings, and we want to still warn for run-time
+	 * overflows.)
+	 */
+
+	/*
+	 * Always stop accesses beyond the struct that contains the
+	 * field, when the buffer's remaining size is known.
+	 * (The -1 test is to optimize away checks where the buffer
+	 * lengths are unknown.)
+	 */
+	if (p_size != (size_t)(-1) && p_size < size)
+		fortify_panic("memset");
 }
 
-__FORTIFY_INLINE void *memmove(void *p, const void *q, __kernel_size_t size)
+#define __fortify_memset_chk(p, c, size, p_size, p_size_field) ({	\
+	size_t __fortify_size = (size_t)(size);				\
+	fortify_memset_chk(__fortify_size, p_size, p_size_field),	\
+	__underlying_memset(p, c, __fortify_size);			\
+})
+
+/*
+ * __builtin_object_size() must be captured here to avoid evaluating argument
+ * side-effects further into the macro layers.
+ */
+#define memset(p, c, s) __fortify_memset_chk(p, c, s,			\
+		__builtin_object_size(p, 0), __builtin_object_size(p, 1))
+
+/*
+ * To make sure the compiler can enforce protection against buffer overflows,
+ * memcpy(), memmove(), and memset() must not be used beyond individual
+ * struct members. If you need to copy across multiple members, please use
+ * struct_group() to create a named mirror of an anonymous struct union.
+ * (e.g. see struct sk_buff.) Read overflow checking is currently only
+ * done when a write overflow is also present, or when building with W=1.
+ *
+ * Mitigation coverage matrix
+ *					Bounds checking at:
+ *					+-------+-------+-------+-------+
+ *					| Compile time  |   Run time    |
+ * memcpy() argument sizes:		| write | read  | write | read  |
+ *        dest     source   length      +-------+-------+-------+-------+
+ * memcpy(known,   known,   constant)	|   y   |   y   |  n/a  |  n/a  |
+ * memcpy(known,   unknown, constant)	|   y   |   n   |  n/a  |   V   |
+ * memcpy(known,   known,   dynamic)	|   n   |   n   |   B   |   B   |
+ * memcpy(known,   unknown, dynamic)	|   n   |   n   |   B   |   V   |
+ * memcpy(unknown, known,   constant)	|   n   |   y   |   V   |  n/a  |
+ * memcpy(unknown, unknown, constant)	|   n   |   n   |   V   |   V   |
+ * memcpy(unknown, known,   dynamic)	|   n   |   n   |   V   |   B   |
+ * memcpy(unknown, unknown, dynamic)	|   n   |   n   |   V   |   V   |
+ *					+-------+-------+-------+-------+
+ *
+ * y = perform deterministic compile-time bounds checking
+ * n = cannot perform deterministic compile-time bounds checking
+ * n/a = no run-time bounds checking needed since compile-time deterministic
+ * B = can perform run-time bounds checking (currently unimplemented)
+ * V = vulnerable to run-time overflow (will need refactoring to solve)
+ *
+ */
+__FORTIFY_INLINE void fortify_memcpy_chk(__kernel_size_t size,
+					 const size_t p_size,
+					 const size_t q_size,
+					 const size_t p_size_field,
+					 const size_t q_size_field,
+					 const char *func)
 {
-	size_t p_size = __builtin_object_size(p, 0);
-	size_t q_size = __builtin_object_size(q, 0);
-
 	if (__builtin_constant_p(size)) {
-		if (p_size < size)
+		/*
+		 * Length argument is a constant expression, so we
+		 * can perform compile-time bounds checking where
+		 * buffer sizes are known.
+		 */
+
+		/* Error when size is larger than enclosing struct. */
+		if (p_size > p_size_field && p_size < size)
 			__write_overflow();
-		if (q_size < size)
+		if (q_size > q_size_field && q_size < size)
 			__read_overflow2();
+
+		/* Warn when write size argument larger than dest field. */
+		if (p_size_field < size)
+			__write_overflow_field(p_size_field, size);
+		/*
+		 * Warn for source field over-read when building with W=1
+		 * or when an over-write happened, so both can be fixed at
+		 * the same time.
+		 */
+		if ((IS_ENABLED(KBUILD_EXTRA_WARN1) || p_size_field < size) &&
+		    q_size_field < size)
+			__read_overflow2_field(q_size_field, size);
 	}
-	if (p_size < size || q_size < size)
-		fortify_panic(__func__);
-	return __underlying_memmove(p, q, size);
+	/*
+	 * At this point, length argument may not be a constant expression,
+	 * so run-time bounds checking can be done where buffer sizes are
+	 * known. (This is not an "else" because the above checks may only
+	 * be compile-time warnings, and we want to still warn for run-time
+	 * overflows.)
+	 */
+
+	/*
+	 * Always stop accesses beyond the struct that contains the
+	 * field, when the buffer's remaining size is known.
+	 * (The -1 test is to optimize away checks where the buffer
+	 * lengths are unknown.)
+	 */
+	if ((p_size != (size_t)(-1) && p_size < size) ||
+	    (q_size != (size_t)(-1) && q_size < size))
+		fortify_panic(func);
 }
 
+#define __fortify_memcpy_chk(p, q, size, p_size, q_size,		\
+			     p_size_field, q_size_field, op) ({		\
+	size_t __fortify_size = (size_t)(size);				\
+	fortify_memcpy_chk(__fortify_size, p_size, q_size,		\
+			   p_size_field, q_size_field, #op);		\
+	__underlying_##op(p, q, __fortify_size);			\
+})
+
+/*
+ * __builtin_object_size() must be captured here to avoid evaluating argument
+ * side-effects further into the macro layers.
+ */
+#define memcpy(p, q, s)  __fortify_memcpy_chk(p, q, s,			\
+		__builtin_object_size(p, 0), __builtin_object_size(q, 0), \
+		__builtin_object_size(p, 1), __builtin_object_size(q, 1), \
+		memcpy)
+#define memmove(p, q, s)  __fortify_memcpy_chk(p, q, s,			\
+		__builtin_object_size(p, 0), __builtin_object_size(q, 0), \
+		__builtin_object_size(p, 1), __builtin_object_size(q, 1), \
+		memmove)
+
 extern void *__real_memscan(void *, int, __kernel_size_t) __RENAME(memscan);
-__FORTIFY_INLINE void *memscan(void *p, int c, __kernel_size_t size)
+__FORTIFY_INLINE void *memscan(void * const POS0 p, int c, __kernel_size_t size)
 {
 	size_t p_size = __builtin_object_size(p, 0);
 
@@ -219,7 +387,8 @@ __FORTIFY_INLINE void *memscan(void *p, int c, __kernel_size_t size)
 	return __real_memscan(p, c, size);
 }
 
-__FORTIFY_INLINE int memcmp(const void *p, const void *q, __kernel_size_t size)
+__FORTIFY_INLINE __diagnose_as(__builtin_memcmp, 1, 2, 3)
+int memcmp(const void * const POS0 p, const void * const POS0 q, __kernel_size_t size)
 {
 	size_t p_size = __builtin_object_size(p, 0);
 	size_t q_size = __builtin_object_size(q, 0);
@@ -235,7 +404,8 @@ __FORTIFY_INLINE int memcmp(const void *p, const void *q, __kernel_size_t size)
 	return __underlying_memcmp(p, q, size);
 }
 
-__FORTIFY_INLINE void *memchr(const void *p, int c, __kernel_size_t size)
+__FORTIFY_INLINE __diagnose_as(__builtin_memchr, 1, 2, 3)
+void *memchr(const void * const POS0 p, int c, __kernel_size_t size)
 {
 	size_t p_size = __builtin_object_size(p, 0);
 
@@ -247,7 +417,7 @@ __FORTIFY_INLINE void *memchr(const void *p, int c, __kernel_size_t size)
 }
 
 void *__real_memchr_inv(const void *s, int c, size_t n) __RENAME(memchr_inv);
-__FORTIFY_INLINE void *memchr_inv(const void *p, int c, size_t size)
+__FORTIFY_INLINE void *memchr_inv(const void * const POS0 p, int c, size_t size)
 {
 	size_t p_size = __builtin_object_size(p, 0);
 
@@ -259,7 +429,7 @@ __FORTIFY_INLINE void *memchr_inv(const void *p, int c, size_t size)
 }
 
 extern void *__real_kmemdup(const void *src, size_t len, gfp_t gfp) __RENAME(kmemdup);
-__FORTIFY_INLINE void *kmemdup(const void *p, size_t size, gfp_t gfp)
+__FORTIFY_INLINE void *kmemdup(const void * const POS0 p, size_t size, gfp_t gfp)
 {
 	size_t p_size = __builtin_object_size(p, 0);
 
@@ -270,33 +440,38 @@ __FORTIFY_INLINE void *kmemdup(const void *p, size_t size, gfp_t gfp)
 	return __real_kmemdup(p, size, gfp);
 }
 
-/* defined after fortified strlen and memcpy to reuse them */
-__FORTIFY_INLINE char *strcpy(char *p, const char *q)
+/* Defined after fortified strlen to reuse it. */
+__FORTIFY_INLINE __diagnose_as(__builtin_strcpy, 1, 2)
+char *strcpy(char * const POS p, const char * const POS q)
 {
 	size_t p_size = __builtin_object_size(p, 1);
 	size_t q_size = __builtin_object_size(q, 1);
 	size_t size;
 
+	/* If neither buffer size is known, immediately give up. */
 	if (p_size == (size_t)-1 && q_size == (size_t)-1)
 		return __underlying_strcpy(p, q);
 	size = strlen(q) + 1;
-	/* test here to use the more stringent object size */
+	/* Compile-time check for const size overflow. */
+	if (__builtin_constant_p(size) && p_size < size)
+		__write_overflow();
+	/* Run-time check for dynamic size overflow. */
 	if (p_size < size)
 		fortify_panic(__func__);
-	memcpy(p, q, size);
+	__underlying_memcpy(p, q, size);
 	return p;
 }
 
 /* Don't use these outside the FORITFY_SOURCE implementation */
 #undef __underlying_memchr
 #undef __underlying_memcmp
-#undef __underlying_memcpy
-#undef __underlying_memmove
-#undef __underlying_memset
 #undef __underlying_strcat
 #undef __underlying_strcpy
 #undef __underlying_strlen
 #undef __underlying_strncat
 #undef __underlying_strncpy
 
+#undef POS
+#undef POS0
+
 #endif /* _LINUX_FORTIFY_STRING_H_ */
diff --git a/include/linux/fpga/fpga-bridge.h b/include/linux/fpga/fpga-bridge.h
index 6c3c28806ff1..223da48a6d18 100644
--- a/include/linux/fpga/fpga-bridge.h
+++ b/include/linux/fpga/fpga-bridge.h
@@ -23,6 +23,23 @@ struct fpga_bridge_ops {
 };
 
 /**
+ * struct fpga_bridge_info - collection of parameters an FPGA Bridge
+ * @name: fpga bridge name
+ * @br_ops: pointer to structure of fpga bridge ops
+ * @priv: fpga bridge private data
+ *
+ * fpga_bridge_info contains parameters for the register function. These
+ * are separated into an info structure because they some are optional
+ * others could be added to in the future. The info structure facilitates
+ * maintaining a stable API.
+ */
+struct fpga_bridge_info {
+	const char *name;
+	const struct fpga_bridge_ops *br_ops;
+	void *priv;
+};
+
+/**
  * struct fpga_bridge - FPGA bridge structure
  * @name: name of low level FPGA bridge
  * @dev: FPGA bridge device
@@ -62,15 +79,10 @@ int of_fpga_bridge_get_to_list(struct device_node *np,
 			       struct fpga_image_info *info,
 			       struct list_head *bridge_list);
 
-struct fpga_bridge *fpga_bridge_create(struct device *dev, const char *name,
-				       const struct fpga_bridge_ops *br_ops,
-				       void *priv);
-void fpga_bridge_free(struct fpga_bridge *br);
-int fpga_bridge_register(struct fpga_bridge *br);
+struct fpga_bridge *
+fpga_bridge_register(struct device *parent, const char *name,
+		     const struct fpga_bridge_ops *br_ops,
+		     void *priv);
 void fpga_bridge_unregister(struct fpga_bridge *br);
 
-struct fpga_bridge
-*devm_fpga_bridge_create(struct device *dev, const char *name,
-			 const struct fpga_bridge_ops *br_ops, void *priv);
-
 #endif /* _LINUX_FPGA_BRIDGE_H */
diff --git a/include/linux/fpga/fpga-mgr.h b/include/linux/fpga/fpga-mgr.h
index 474c1f506307..0f9468771bb9 100644
--- a/include/linux/fpga/fpga-mgr.h
+++ b/include/linux/fpga/fpga-mgr.h
@@ -106,6 +106,36 @@ struct fpga_image_info {
 };
 
 /**
+ * struct fpga_compat_id - id for compatibility check
+ *
+ * @id_h: high 64bit of the compat_id
+ * @id_l: low 64bit of the compat_id
+ */
+struct fpga_compat_id {
+	u64 id_h;
+	u64 id_l;
+};
+
+/**
+ * struct fpga_manager_info - collection of parameters for an FPGA Manager
+ * @name: fpga manager name
+ * @compat_id: FPGA manager id for compatibility check.
+ * @mops: pointer to structure of fpga manager ops
+ * @priv: fpga manager private data
+ *
+ * fpga_manager_info contains parameters for the register_full function.
+ * These are separated into an info structure because they some are optional
+ * others could be added to in the future. The info structure facilitates
+ * maintaining a stable API.
+ */
+struct fpga_manager_info {
+	const char *name;
+	struct fpga_compat_id *compat_id;
+	const struct fpga_manager_ops *mops;
+	void *priv;
+};
+
+/**
  * struct fpga_manager_ops - ops for low level fpga manager drivers
  * @initial_header_size: Maximum number of bytes that should be passed into write_init
  * @state: returns an enum value of the FPGA's state
@@ -144,17 +174,6 @@ struct fpga_manager_ops {
 #define FPGA_MGR_STATUS_FIFO_OVERFLOW_ERR	BIT(4)
 
 /**
- * struct fpga_compat_id - id for compatibility check
- *
- * @id_h: high 64bit of the compat_id
- * @id_l: low 64bit of the compat_id
- */
-struct fpga_compat_id {
-	u64 id_h;
-	u64 id_l;
-};
-
-/**
  * struct fpga_manager - fpga manager structure
  * @name: name of low level fpga manager
  * @dev: fpga manager device
@@ -191,17 +210,18 @@ struct fpga_manager *fpga_mgr_get(struct device *dev);
 
 void fpga_mgr_put(struct fpga_manager *mgr);
 
-struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name,
-				     const struct fpga_manager_ops *mops,
-				     void *priv);
-void fpga_mgr_free(struct fpga_manager *mgr);
-int fpga_mgr_register(struct fpga_manager *mgr);
-void fpga_mgr_unregister(struct fpga_manager *mgr);
+struct fpga_manager *
+fpga_mgr_register_full(struct device *parent, const struct fpga_manager_info *info);
 
-int devm_fpga_mgr_register(struct device *dev, struct fpga_manager *mgr);
+struct fpga_manager *
+fpga_mgr_register(struct device *parent, const char *name,
+		  const struct fpga_manager_ops *mops, void *priv);
+void fpga_mgr_unregister(struct fpga_manager *mgr);
 
-struct fpga_manager *devm_fpga_mgr_create(struct device *dev, const char *name,
-					  const struct fpga_manager_ops *mops,
-					  void *priv);
+struct fpga_manager *
+devm_fpga_mgr_register_full(struct device *parent, const struct fpga_manager_info *info);
+struct fpga_manager *
+devm_fpga_mgr_register(struct device *parent, const char *name,
+		       const struct fpga_manager_ops *mops, void *priv);
 
 #endif /*_LINUX_FPGA_MGR_H */
diff --git a/include/linux/fpga/fpga-region.h b/include/linux/fpga/fpga-region.h
index 27cb706275db..3b87f232425c 100644
--- a/include/linux/fpga/fpga-region.h
+++ b/include/linux/fpga/fpga-region.h
@@ -7,6 +7,27 @@
 #include <linux/fpga/fpga-mgr.h>
 #include <linux/fpga/fpga-bridge.h>
 
+struct fpga_region;
+
+/**
+ * struct fpga_region_info - collection of parameters an FPGA Region
+ * @mgr: fpga region manager
+ * @compat_id: FPGA region id for compatibility check.
+ * @priv: fpga region private data
+ * @get_bridges: optional function to get bridges to a list
+ *
+ * fpga_region_info contains parameters for the register_full function.
+ * These are separated into an info structure because they some are optional
+ * others could be added to in the future. The info structure facilitates
+ * maintaining a stable API.
+ */
+struct fpga_region_info {
+	struct fpga_manager *mgr;
+	struct fpga_compat_id *compat_id;
+	void *priv;
+	int (*get_bridges)(struct fpga_region *region);
+};
+
 /**
  * struct fpga_region - FPGA Region structure
  * @dev: FPGA Region device
@@ -37,15 +58,12 @@ struct fpga_region *fpga_region_class_find(
 
 int fpga_region_program_fpga(struct fpga_region *region);
 
-struct fpga_region
-*fpga_region_create(struct device *dev, struct fpga_manager *mgr,
-		    int (*get_bridges)(struct fpga_region *));
-void fpga_region_free(struct fpga_region *region);
-int fpga_region_register(struct fpga_region *region);
-void fpga_region_unregister(struct fpga_region *region);
+struct fpga_region *
+fpga_region_register_full(struct device *parent, const struct fpga_region_info *info);
 
-struct fpga_region
-*devm_fpga_region_create(struct device *dev, struct fpga_manager *mgr,
-			int (*get_bridges)(struct fpga_region *));
+struct fpga_region *
+fpga_region_register(struct device *parent, struct fpga_manager *mgr,
+		     int (*get_bridges)(struct fpga_region *));
+void fpga_region_unregister(struct fpga_region *region);
 
 #endif /* _FPGA_REGION_H */
diff --git a/include/linux/fprobe.h b/include/linux/fprobe.h
new file mode 100644
index 000000000000..1c2bde0ead73
--- /dev/null
+++ b/include/linux/fprobe.h
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Simple ftrace probe wrapper */
+#ifndef _LINUX_FPROBE_H
+#define _LINUX_FPROBE_H
+
+#include <linux/compiler.h>
+#include <linux/ftrace.h>
+#include <linux/rethook.h>
+
+/**
+ * struct fprobe - ftrace based probe.
+ * @ops: The ftrace_ops.
+ * @nmissed: The counter for missing events.
+ * @flags: The status flag.
+ * @rethook: The rethook data structure. (internal data)
+ * @entry_handler: The callback function for function entry.
+ * @exit_handler: The callback function for function exit.
+ */
+struct fprobe {
+#ifdef CONFIG_FUNCTION_TRACER
+	/*
+	 * If CONFIG_FUNCTION_TRACER is not set, CONFIG_FPROBE is disabled too.
+	 * But user of fprobe may keep embedding the struct fprobe on their own
+	 * code. To avoid build error, this will keep the fprobe data structure
+	 * defined here, but remove ftrace_ops data structure.
+	 */
+	struct ftrace_ops	ops;
+#endif
+	unsigned long		nmissed;
+	unsigned int		flags;
+	struct rethook		*rethook;
+
+	void (*entry_handler)(struct fprobe *fp, unsigned long entry_ip, struct pt_regs *regs);
+	void (*exit_handler)(struct fprobe *fp, unsigned long entry_ip, struct pt_regs *regs);
+};
+
+/* This fprobe is soft-disabled. */
+#define FPROBE_FL_DISABLED	1
+
+/*
+ * This fprobe handler will be shared with kprobes.
+ * This flag must be set before registering.
+ */
+#define FPROBE_FL_KPROBE_SHARED	2
+
+static inline bool fprobe_disabled(struct fprobe *fp)
+{
+	return (fp) ? fp->flags & FPROBE_FL_DISABLED : false;
+}
+
+static inline bool fprobe_shared_with_kprobes(struct fprobe *fp)
+{
+	return (fp) ? fp->flags & FPROBE_FL_KPROBE_SHARED : false;
+}
+
+#ifdef CONFIG_FPROBE
+int register_fprobe(struct fprobe *fp, const char *filter, const char *notfilter);
+int register_fprobe_ips(struct fprobe *fp, unsigned long *addrs, int num);
+int register_fprobe_syms(struct fprobe *fp, const char **syms, int num);
+int unregister_fprobe(struct fprobe *fp);
+#else
+static inline int register_fprobe(struct fprobe *fp, const char *filter, const char *notfilter)
+{
+	return -EOPNOTSUPP;
+}
+static inline int register_fprobe_ips(struct fprobe *fp, unsigned long *addrs, int num)
+{
+	return -EOPNOTSUPP;
+}
+static inline int register_fprobe_syms(struct fprobe *fp, const char **syms, int num)
+{
+	return -EOPNOTSUPP;
+}
+static inline int unregister_fprobe(struct fprobe *fp)
+{
+	return -EOPNOTSUPP;
+}
+#endif
+
+/**
+ * disable_fprobe() - Disable fprobe
+ * @fp: The fprobe to be disabled.
+ *
+ * This will soft-disable @fp. Note that this doesn't remove the ftrace
+ * hooks from the function entry.
+ */
+static inline void disable_fprobe(struct fprobe *fp)
+{
+	if (fp)
+		fp->flags |= FPROBE_FL_DISABLED;
+}
+
+/**
+ * enable_fprobe() - Enable fprobe
+ * @fp: The fprobe to be enabled.
+ *
+ * This will soft-enable @fp.
+ */
+static inline void enable_fprobe(struct fprobe *fp)
+{
+	if (fp)
+		fp->flags &= ~FPROBE_FL_DISABLED;
+}
+
+#endif
diff --git a/include/linux/frontswap.h b/include/linux/frontswap.h
index b07d88c92bb2..a631bac12220 100644
--- a/include/linux/frontswap.h
+++ b/include/linux/frontswap.h
@@ -7,31 +7,17 @@
 #include <linux/bitops.h>
 #include <linux/jump_label.h>
 
-/*
- * Return code to denote that requested number of
- * frontswap pages are unused(moved to page cache).
- * Used in shmem_unuse and try_to_unuse.
- */
-#define FRONTSWAP_PAGES_UNUSED	2
-
 struct frontswap_ops {
 	void (*init)(unsigned); /* this swap type was just swapon'ed */
 	int (*store)(unsigned, pgoff_t, struct page *); /* store a page */
 	int (*load)(unsigned, pgoff_t, struct page *); /* load a page */
 	void (*invalidate_page)(unsigned, pgoff_t); /* page no longer needed */
 	void (*invalidate_area)(unsigned); /* swap type just swapoff'ed */
-	struct frontswap_ops *next; /* private pointer to next ops */
 };
 
-extern void frontswap_register_ops(struct frontswap_ops *ops);
-extern void frontswap_shrink(unsigned long);
-extern unsigned long frontswap_curr_pages(void);
-extern void frontswap_writethrough(bool);
-#define FRONTSWAP_HAS_EXCLUSIVE_GETS
-extern void frontswap_tmem_exclusive_gets(bool);
+int frontswap_register_ops(const struct frontswap_ops *ops);
 
-extern bool __frontswap_test(struct swap_info_struct *, pgoff_t);
-extern void __frontswap_init(unsigned type, unsigned long *map);
+extern void frontswap_init(unsigned type, unsigned long *map);
 extern int __frontswap_store(struct page *page);
 extern int __frontswap_load(struct page *page);
 extern void __frontswap_invalidate_page(unsigned, pgoff_t);
@@ -45,11 +31,6 @@ static inline bool frontswap_enabled(void)
 	return static_branch_unlikely(&frontswap_enabled_key);
 }
 
-static inline bool frontswap_test(struct swap_info_struct *sis, pgoff_t offset)
-{
-	return __frontswap_test(sis, offset);
-}
-
 static inline void frontswap_map_set(struct swap_info_struct *p,
 				     unsigned long *map)
 {
@@ -68,11 +49,6 @@ static inline bool frontswap_enabled(void)
 	return false;
 }
 
-static inline bool frontswap_test(struct swap_info_struct *sis, pgoff_t offset)
-{
-	return false;
-}
-
 static inline void frontswap_map_set(struct swap_info_struct *p,
 				     unsigned long *map)
 {
@@ -112,11 +88,4 @@ static inline void frontswap_invalidate_area(unsigned type)
 		__frontswap_invalidate_area(type);
 }
 
-static inline void frontswap_init(unsigned type, unsigned long *map)
-{
-#ifdef CONFIG_FRONTSWAP
-	__frontswap_init(type, map);
-#endif
-}
-
 #endif /* _LINUX_FRONTSWAP_H */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index e7a633353fd2..bbde95387a23 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -41,6 +41,8 @@
 #include <linux/stddef.h>
 #include <linux/mount.h>
 #include <linux/cred.h>
+#include <linux/mnt_idmapping.h>
+#include <linux/slab.h>
 
 #include <asm/byteorder.h>
 #include <uapi/linux/fs.h>
@@ -48,6 +50,7 @@
 struct backing_dev_info;
 struct bdi_writeback;
 struct bio;
+struct io_comp_batch;
 struct export_operations;
 struct fiemap_extent_info;
 struct hd_geometry;
@@ -77,15 +80,8 @@ extern void __init inode_init_early(void);
 extern void __init files_init(void);
 extern void __init files_maxfiles_init(void);
 
-extern struct files_stat_struct files_stat;
 extern unsigned long get_max_files(void);
 extern unsigned int sysctl_nr_open;
-extern struct inodes_stat_t inodes_stat;
-extern int leases_enable, lease_break_time;
-extern int sysctl_protected_symlinks;
-extern int sysctl_protected_hardlinks;
-extern int sysctl_protected_fifos;
-extern int sysctl_protected_regular;
 
 typedef __kernel_rwf_t rwf_t;
 
@@ -279,7 +275,6 @@ enum positive_aop_returns {
 	AOP_TRUNCATED_PAGE	= 0x80001,
 };
 
-#define AOP_FLAG_CONT_EXPAND		0x0001 /* called from cont_expand */
 #define AOP_FLAG_NOFS			0x0002 /* used by filesystem to direct
 						* helper code (eg buffer layer)
 						* to clear GFP_FS from alloc */
@@ -329,16 +324,11 @@ struct kiocb {
 	randomized_struct_fields_start
 
 	loff_t			ki_pos;
-	void (*ki_complete)(struct kiocb *iocb, long ret, long ret2);
+	void (*ki_complete)(struct kiocb *iocb, long ret);
 	void			*private;
 	int			ki_flags;
-	u16			ki_hint;
 	u16			ki_ioprio; /* See linux/ioprio.h */
-	union {
-		unsigned int		ki_cookie; /* for ->iopoll */
-		struct wait_page_queue	*ki_waitq; /* for async buffered IO */
-	};
-
+	struct wait_page_queue	*ki_waitq; /* for async buffered IO */
 	randomized_struct_fields_end
 };
 
@@ -347,28 +337,6 @@ static inline bool is_sync_kiocb(struct kiocb *kiocb)
 	return kiocb->ki_complete == NULL;
 }
 
-/*
- * "descriptor" for what we're up to with a read.
- * This allows us to use the same read code yet
- * have multiple different users of the data that
- * we read from a file.
- *
- * The simplest case just copies the data to user
- * mode.
- */
-typedef struct {
-	size_t written;
-	size_t count;
-	union {
-		char __user *buf;
-		void *data;
-	} arg;
-	int error;
-} read_descriptor_t;
-
-typedef int (*read_actor_t)(read_descriptor_t *, struct page *,
-		unsigned long, unsigned long);
-
 struct address_space_operations {
 	int (*writepage)(struct page *page, struct writeback_control *wbc);
 	int (*readpage)(struct file *, struct page *);
@@ -376,15 +344,9 @@ struct address_space_operations {
 	/* Write back some dirty pages from this mapping. */
 	int (*writepages)(struct address_space *, struct writeback_control *);
 
-	/* Set a page dirty.  Return true if this dirtied it */
-	int (*set_page_dirty)(struct page *page);
+	/* Mark a folio dirty.  Return true if this dirtied it */
+	bool (*dirty_folio)(struct address_space *, struct folio *);
 
-	/*
-	 * Reads in the requested pages. Unlike ->readpage(), this is
-	 * PURELY used for read-ahead!.
-	 */
-	int (*readpages)(struct file *filp, struct address_space *mapping,
-			struct list_head *pages, unsigned nr_pages);
 	void (*readahead)(struct readahead_control *);
 
 	int (*write_begin)(struct file *, struct address_space *mapping,
@@ -396,7 +358,7 @@ struct address_space_operations {
 
 	/* Unfortunately this kludge is needed for FIBMAP. Don't use it */
 	sector_t (*bmap)(struct address_space *, sector_t);
-	void (*invalidatepage) (struct page *, unsigned int, unsigned int);
+	void (*invalidate_folio) (struct folio *, size_t offset, size_t len);
 	int (*releasepage) (struct page *, gfp_t);
 	void (*freepage)(struct page *);
 	ssize_t (*direct_IO)(struct kiocb *, struct iov_iter *iter);
@@ -408,9 +370,9 @@ struct address_space_operations {
 			struct page *, struct page *, enum migrate_mode);
 	bool (*isolate_page)(struct page *, isolate_mode_t);
 	void (*putback_page)(struct page *);
-	int (*launder_page) (struct page *);
-	int (*is_partially_uptodate) (struct page *, unsigned long,
-					unsigned long);
+	int (*launder_folio)(struct folio *);
+	bool (*is_partially_uptodate) (struct folio *, size_t from,
+			size_t count);
 	void (*is_dirty_writeback) (struct page *, bool *, bool *);
 	int (*error_remove_page)(struct address_space *, struct page *);
 
@@ -939,10 +901,15 @@ struct fown_struct {
  * struct file_ra_state - Track a file's readahead state.
  * @start: Where the most recent readahead started.
  * @size: Number of pages read in the most recent readahead.
- * @async_size: Start next readahead when this many pages are left.
- * @ra_pages: Maximum size of a readahead request.
+ * @async_size: Numer of pages that were/are not needed immediately
+ *      and so were/are genuinely "ahead".  Start next readahead when
+ *      the first of these pages is accessed.
+ * @ra_pages: Maximum size of a readahead request, copied from the bdi.
  * @mmap_miss: How many mmap accesses missed in the page cache.
  * @prev_pos: The last byte in the most recent read request.
+ *
+ * When this structure is passed to ->readahead(), the "most recent"
+ * readahead means the current readahead.
  */
 struct file_ra_state {
 	pgoff_t start;
@@ -976,7 +943,6 @@ struct file {
 	 * Must not be taken from IRQ context.
 	 */
 	spinlock_t		f_lock;
-	enum rw_hint		f_write_hint;
 	atomic_long_t		f_count;
 	unsigned int 		f_flags;
 	fmode_t			f_mode;
@@ -1223,13 +1189,13 @@ static inline int fcntl_setlk(unsigned int fd, struct file *file,
 
 #if BITS_PER_LONG == 32
 static inline int fcntl_getlk64(struct file *file, unsigned int cmd,
-				struct flock64 __user *user)
+				struct flock64 *user)
 {
 	return -EINVAL;
 }
 
 static inline int fcntl_setlk64(unsigned int fd, struct file *file,
-				unsigned int cmd, struct flock64 __user *user)
+				unsigned int cmd, struct flock64 *user)
 {
 	return -EACCES;
 }
@@ -1443,6 +1409,8 @@ extern int send_sigurg(struct fown_struct *fown);
 #define SB_I_UNTRUSTED_MOUNTER		0x00000040
 
 #define SB_I_SKIP_SYNC	0x00000100	/* Skip superblock at global sync */
+#define SB_I_PERSB_BDI	0x00000200	/* has a per-sb bdi */
+#define SB_I_TS_EXPIRY_WARNED 0x00000400 /* warned about timestamp range expiry */
 
 /* Possible states of 'frozen' field */
 enum {
@@ -1491,7 +1459,7 @@ struct super_block {
 #ifdef CONFIG_FS_VERITY
 	const struct fsverity_operations *s_vop;
 #endif
-#ifdef CONFIG_UNICODE
+#if IS_ENABLED(CONFIG_UNICODE)
 	struct unicode_map *s_encoding;
 	__u16 s_encoding_flags;
 #endif
@@ -1543,11 +1511,6 @@ struct super_block {
 
 	const struct dentry_operations *s_d_op; /* default d_op for dentries */
 
-	/*
-	 * Saved pool identifier for cleancache (-1 means none)
-	 */
-	int cleancache_poolid;
-
 	struct shrinker s_shrink;	/* per-sb shrinker handle */
 
 	/* Number of inodes with nlink == 0 but still referenced */
@@ -1601,6 +1564,11 @@ struct super_block {
 	struct list_head	s_inodes_wb;	/* writeback inodes */
 } __randomize_layout;
 
+static inline struct user_namespace *i_user_ns(const struct inode *inode)
+{
+	return inode->i_sb->s_user_ns;
+}
+
 /* Helper functions so that in most cases filesystems will
  * not need to deal directly with kuid_t and kgid_t and can
  * instead deal with the raw numeric values that are stored
@@ -1608,50 +1576,22 @@ struct super_block {
  */
 static inline uid_t i_uid_read(const struct inode *inode)
 {
-	return from_kuid(inode->i_sb->s_user_ns, inode->i_uid);
+	return from_kuid(i_user_ns(inode), inode->i_uid);
 }
 
 static inline gid_t i_gid_read(const struct inode *inode)
 {
-	return from_kgid(inode->i_sb->s_user_ns, inode->i_gid);
+	return from_kgid(i_user_ns(inode), inode->i_gid);
 }
 
 static inline void i_uid_write(struct inode *inode, uid_t uid)
 {
-	inode->i_uid = make_kuid(inode->i_sb->s_user_ns, uid);
+	inode->i_uid = make_kuid(i_user_ns(inode), uid);
 }
 
 static inline void i_gid_write(struct inode *inode, gid_t gid)
 {
-	inode->i_gid = make_kgid(inode->i_sb->s_user_ns, gid);
-}
-
-/**
- * kuid_into_mnt - map a kuid down into a mnt_userns
- * @mnt_userns: user namespace of the relevant mount
- * @kuid: kuid to be mapped
- *
- * Return: @kuid mapped according to @mnt_userns.
- * If @kuid has no mapping INVALID_UID is returned.
- */
-static inline kuid_t kuid_into_mnt(struct user_namespace *mnt_userns,
-				   kuid_t kuid)
-{
-	return make_kuid(mnt_userns, __kuid_val(kuid));
-}
-
-/**
- * kgid_into_mnt - map a kgid down into a mnt_userns
- * @mnt_userns: user namespace of the relevant mount
- * @kgid: kgid to be mapped
- *
- * Return: @kgid mapped according to @mnt_userns.
- * If @kgid has no mapping INVALID_GID is returned.
- */
-static inline kgid_t kgid_into_mnt(struct user_namespace *mnt_userns,
-				   kgid_t kgid)
-{
-	return make_kgid(mnt_userns, __kgid_val(kgid));
+	inode->i_gid = make_kgid(i_user_ns(inode), gid);
 }
 
 /**
@@ -1665,7 +1605,7 @@ static inline kgid_t kgid_into_mnt(struct user_namespace *mnt_userns,
 static inline kuid_t i_uid_into_mnt(struct user_namespace *mnt_userns,
 				    const struct inode *inode)
 {
-	return kuid_into_mnt(mnt_userns, inode->i_uid);
+	return mapped_kuid_fs(mnt_userns, i_user_ns(inode), inode->i_uid);
 }
 
 /**
@@ -1679,69 +1619,7 @@ static inline kuid_t i_uid_into_mnt(struct user_namespace *mnt_userns,
 static inline kgid_t i_gid_into_mnt(struct user_namespace *mnt_userns,
 				    const struct inode *inode)
 {
-	return kgid_into_mnt(mnt_userns, inode->i_gid);
-}
-
-/**
- * kuid_from_mnt - map a kuid up into a mnt_userns
- * @mnt_userns: user namespace of the relevant mount
- * @kuid: kuid to be mapped
- *
- * Return: @kuid mapped up according to @mnt_userns.
- * If @kuid has no mapping INVALID_UID is returned.
- */
-static inline kuid_t kuid_from_mnt(struct user_namespace *mnt_userns,
-				   kuid_t kuid)
-{
-	return KUIDT_INIT(from_kuid(mnt_userns, kuid));
-}
-
-/**
- * kgid_from_mnt - map a kgid up into a mnt_userns
- * @mnt_userns: user namespace of the relevant mount
- * @kgid: kgid to be mapped
- *
- * Return: @kgid mapped up according to @mnt_userns.
- * If @kgid has no mapping INVALID_GID is returned.
- */
-static inline kgid_t kgid_from_mnt(struct user_namespace *mnt_userns,
-				   kgid_t kgid)
-{
-	return KGIDT_INIT(from_kgid(mnt_userns, kgid));
-}
-
-/**
- * mapped_fsuid - return caller's fsuid mapped up into a mnt_userns
- * @mnt_userns: user namespace of the relevant mount
- *
- * Use this helper to initialize a new vfs or filesystem object based on
- * the caller's fsuid. A common example is initializing the i_uid field of
- * a newly allocated inode triggered by a creation event such as mkdir or
- * O_CREAT. Other examples include the allocation of quotas for a specific
- * user.
- *
- * Return: the caller's current fsuid mapped up according to @mnt_userns.
- */
-static inline kuid_t mapped_fsuid(struct user_namespace *mnt_userns)
-{
-	return kuid_from_mnt(mnt_userns, current_fsuid());
-}
-
-/**
- * mapped_fsgid - return caller's fsgid mapped up into a mnt_userns
- * @mnt_userns: user namespace of the relevant mount
- *
- * Use this helper to initialize a new vfs or filesystem object based on
- * the caller's fsgid. A common example is initializing the i_gid field of
- * a newly allocated inode triggered by a creation event such as mkdir or
- * O_CREAT. Other examples include the allocation of quotas for a specific
- * user.
- *
- * Return: the caller's current fsgid mapped up according to @mnt_userns.
- */
-static inline kgid_t mapped_fsgid(struct user_namespace *mnt_userns)
-{
-	return kgid_from_mnt(mnt_userns, current_fsgid());
+	return mapped_kgid_fs(mnt_userns, i_user_ns(inode), inode->i_gid);
 }
 
 /**
@@ -1755,7 +1633,7 @@ static inline kgid_t mapped_fsgid(struct user_namespace *mnt_userns)
 static inline void inode_fsuid_set(struct inode *inode,
 				   struct user_namespace *mnt_userns)
 {
-	inode->i_uid = mapped_fsuid(mnt_userns);
+	inode->i_uid = mapped_fsuid(mnt_userns, i_user_ns(inode));
 }
 
 /**
@@ -1769,7 +1647,7 @@ static inline void inode_fsuid_set(struct inode *inode,
 static inline void inode_fsgid_set(struct inode *inode,
 				   struct user_namespace *mnt_userns)
 {
-	inode->i_gid = mapped_fsgid(mnt_userns);
+	inode->i_gid = mapped_fsgid(mnt_userns, i_user_ns(inode));
 }
 
 /**
@@ -1786,10 +1664,18 @@ static inline void inode_fsgid_set(struct inode *inode,
 static inline bool fsuidgid_has_mapping(struct super_block *sb,
 					struct user_namespace *mnt_userns)
 {
-	struct user_namespace *s_user_ns = sb->s_user_ns;
+	struct user_namespace *fs_userns = sb->s_user_ns;
+	kuid_t kuid;
+	kgid_t kgid;
 
-	return kuid_has_mapping(s_user_ns, mapped_fsuid(mnt_userns)) &&
-	       kgid_has_mapping(s_user_ns, mapped_fsgid(mnt_userns));
+	kuid = mapped_fsuid(mnt_userns, fs_userns);
+	if (!uid_valid(kuid))
+		return false;
+	kgid = mapped_fsgid(mnt_userns, fs_userns);
+	if (!gid_valid(kgid))
+		return false;
+	return kuid_has_mapping(fs_userns, kuid) &&
+	       kgid_has_mapping(fs_userns, kgid);
 }
 
 extern struct timespec64 current_time(struct inode *inode);
@@ -2075,7 +1961,8 @@ struct file_operations {
 	ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
 	ssize_t (*read_iter) (struct kiocb *, struct iov_iter *);
 	ssize_t (*write_iter) (struct kiocb *, struct iov_iter *);
-	int (*iopoll)(struct kiocb *kiocb, bool spin);
+	int (*iopoll)(struct kiocb *kiocb, struct io_comp_batch *,
+			unsigned int flags);
 	int (*iterate) (struct file *, struct dir_context *);
 	int (*iterate_shared) (struct file *, struct dir_context *);
 	__poll_t (*poll) (struct file *, struct poll_table_struct *);
@@ -2250,6 +2137,7 @@ struct super_operations {
 #define S_ENCRYPTED	(1 << 14) /* Encrypted file (using fs/crypto/) */
 #define S_CASEFOLD	(1 << 15) /* Casefolded file */
 #define S_VERITY	(1 << 16) /* Verity file (using fs/verity/) */
+#define S_KERNEL_FILE	(1 << 17) /* File is in use by the kernel (eg. fs/cachefiles) */
 
 /*
  * Note that nosuid etc flags are inode-specific: setting some file-system
@@ -2303,31 +2191,13 @@ static inline bool HAS_UNMAPPED_ID(struct user_namespace *mnt_userns,
 	       !gid_valid(i_gid_into_mnt(mnt_userns, inode));
 }
 
-static inline enum rw_hint file_write_hint(struct file *file)
-{
-	if (file->f_write_hint != WRITE_LIFE_NOT_SET)
-		return file->f_write_hint;
-
-	return file_inode(file)->i_write_hint;
-}
-
 static inline int iocb_flags(struct file *file);
 
-static inline u16 ki_hint_validate(enum rw_hint hint)
-{
-	typeof(((struct kiocb *)0)->ki_hint) max_hint = -1;
-
-	if (hint <= max_hint)
-		return hint;
-	return 0;
-}
-
 static inline void init_sync_kiocb(struct kiocb *kiocb, struct file *filp)
 {
 	*kiocb = (struct kiocb) {
 		.ki_filp = filp,
 		.ki_flags = iocb_flags(filp),
-		.ki_hint = ki_hint_validate(file_write_hint(filp)),
 		.ki_ioprio = get_current_ioprio(),
 	};
 }
@@ -2338,7 +2208,6 @@ static inline void kiocb_clone(struct kiocb *kiocb, struct kiocb *kiocb_src,
 	*kiocb = (struct kiocb) {
 		.ki_filp = filp,
 		.ki_flags = kiocb_src->ki_flags,
-		.ki_hint = kiocb_src->ki_hint,
 		.ki_ioprio = kiocb_src->ki_ioprio,
 		.ki_pos = kiocb_src->ki_pos,
 	};
@@ -2419,6 +2288,8 @@ static inline void kiocb_clone(struct kiocb *kiocb, struct kiocb *kiocb_src,
  *			Used to detect that mark_inode_dirty() should not move
  * 			inode between dirty lists.
  *
+ * I_PINNING_FSCACHE_WB	Inode is pinning an fscache object for writeback.
+ *
  * Q: What is the difference between I_WILL_FREE and I_FREEING?
  */
 #define I_DIRTY_SYNC		(1 << 0)
@@ -2441,6 +2312,7 @@ static inline void kiocb_clone(struct kiocb *kiocb, struct kiocb *kiocb_src,
 #define I_CREATING		(1 << 15)
 #define I_DONTCACHE		(1 << 16)
 #define I_SYNC_QUEUED		(1 << 17)
+#define I_PINNING_FSCACHE_WB	(1 << 18)
 
 #define I_DIRTY_INODE (I_DIRTY_SYNC | I_DIRTY_DATASYNC)
 #define I_DIRTY (I_DIRTY_INODE | I_DIRTY_PAGES)
@@ -2498,6 +2370,8 @@ enum file_time_flags {
 
 extern bool atime_needs_update(const struct path *, struct inode *);
 extern void touch_atime(const struct path *);
+int inode_update_time(struct inode *inode, struct timespec64 *time, int flags);
+
 static inline void file_accessed(struct file *file)
 {
 	if (!(file->f_flags & O_NOATIME))
@@ -2517,7 +2391,6 @@ struct file_system_type {
 #define FS_USERNS_MOUNT		8	/* Can be mounted by userns root */
 #define FS_DISALLOW_NOTIFY_PERM	16	/* Disable fanotify permission events */
 #define FS_ALLOW_IDMAP         32      /* FS has been updated to handle vfs idmappings. */
-#define FS_THP_SUPPORT		8192	/* Remove once all fs converted */
 #define FS_RENAME_DOES_D_MOVE	32768	/* FS will handle d_move() during rename() internally. */
 	int (*init_fs_context)(struct fs_context *);
 	const struct fs_parameter_spec *parameters;
@@ -2724,6 +2597,21 @@ static inline struct user_namespace *file_mnt_user_ns(struct file *file)
 {
 	return mnt_user_ns(file->f_path.mnt);
 }
+
+/**
+ * is_idmapped_mnt - check whether a mount is mapped
+ * @mnt: the mount to check
+ *
+ * If @mnt has an idmapping attached different from the
+ * filesystem's idmapping then @mnt is mapped.
+ *
+ * Return: true if mount is mapped, false if not.
+ */
+static inline bool is_idmapped_mnt(const struct vfsmount *mnt)
+{
+	return mnt_user_ns(mnt) != mnt->mnt_sb->s_user_ns;
+}
+
 extern long vfs_truncate(const struct path *, loff_t);
 int do_truncate(struct user_namespace *, struct dentry *, loff_t start,
 		unsigned int time_attrs, struct file *filp);
@@ -2815,56 +2703,6 @@ extern void init_special_inode(struct inode *, umode_t, dev_t);
 extern void make_bad_inode(struct inode *);
 extern bool is_bad_inode(struct inode *);
 
-unsigned long invalidate_mapping_pages(struct address_space *mapping,
-					pgoff_t start, pgoff_t end);
-
-void invalidate_mapping_pagevec(struct address_space *mapping,
-				pgoff_t start, pgoff_t end,
-				unsigned long *nr_pagevec);
-
-static inline void invalidate_remote_inode(struct inode *inode)
-{
-	if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
-	    S_ISLNK(inode->i_mode))
-		invalidate_mapping_pages(inode->i_mapping, 0, -1);
-}
-extern int invalidate_inode_pages2(struct address_space *mapping);
-extern int invalidate_inode_pages2_range(struct address_space *mapping,
-					 pgoff_t start, pgoff_t end);
-extern int write_inode_now(struct inode *, int);
-extern int filemap_fdatawrite(struct address_space *);
-extern int filemap_flush(struct address_space *);
-extern int filemap_fdatawait_keep_errors(struct address_space *mapping);
-extern int filemap_fdatawait_range(struct address_space *, loff_t lstart,
-				   loff_t lend);
-extern int filemap_fdatawait_range_keep_errors(struct address_space *mapping,
-		loff_t start_byte, loff_t end_byte);
-
-static inline int filemap_fdatawait(struct address_space *mapping)
-{
-	return filemap_fdatawait_range(mapping, 0, LLONG_MAX);
-}
-
-extern bool filemap_range_has_page(struct address_space *, loff_t lstart,
-				  loff_t lend);
-extern bool filemap_range_needs_writeback(struct address_space *,
-					  loff_t lstart, loff_t lend);
-extern int filemap_write_and_wait_range(struct address_space *mapping,
-				        loff_t lstart, loff_t lend);
-extern int __filemap_fdatawrite_range(struct address_space *mapping,
-				loff_t start, loff_t end, int sync_mode);
-extern int filemap_fdatawrite_range(struct address_space *mapping,
-				loff_t start, loff_t end);
-extern int filemap_check_errors(struct address_space *mapping);
-extern void __filemap_set_wb_err(struct address_space *mapping, int err);
-int filemap_fdatawrite_wbc(struct address_space *mapping,
-			   struct writeback_control *wbc);
-
-static inline int filemap_write_and_wait(struct address_space *mapping)
-{
-	return filemap_write_and_wait_range(mapping, 0, LLONG_MAX);
-}
-
 extern int __must_check file_fdatawait_range(struct file *file, loff_t lstart,
 						loff_t lend);
 extern int __must_check file_check_and_advance_wb_err(struct file *file);
@@ -2876,67 +2714,6 @@ static inline int file_write_and_wait(struct file *file)
 	return file_write_and_wait_range(file, 0, LLONG_MAX);
 }
 
-/**
- * filemap_set_wb_err - set a writeback error on an address_space
- * @mapping: mapping in which to set writeback error
- * @err: error to be set in mapping
- *
- * When writeback fails in some way, we must record that error so that
- * userspace can be informed when fsync and the like are called.  We endeavor
- * to report errors on any file that was open at the time of the error.  Some
- * internal callers also need to know when writeback errors have occurred.
- *
- * When a writeback error occurs, most filesystems will want to call
- * filemap_set_wb_err to record the error in the mapping so that it will be
- * automatically reported whenever fsync is called on the file.
- */
-static inline void filemap_set_wb_err(struct address_space *mapping, int err)
-{
-	/* Fastpath for common case of no error */
-	if (unlikely(err))
-		__filemap_set_wb_err(mapping, err);
-}
-
-/**
- * filemap_check_wb_err - has an error occurred since the mark was sampled?
- * @mapping: mapping to check for writeback errors
- * @since: previously-sampled errseq_t
- *
- * Grab the errseq_t value from the mapping, and see if it has changed "since"
- * the given value was sampled.
- *
- * If it has then report the latest error set, otherwise return 0.
- */
-static inline int filemap_check_wb_err(struct address_space *mapping,
-					errseq_t since)
-{
-	return errseq_check(&mapping->wb_err, since);
-}
-
-/**
- * filemap_sample_wb_err - sample the current errseq_t to test for later errors
- * @mapping: mapping to be sampled
- *
- * Writeback errors are always reported relative to a particular sample point
- * in the past. This function provides those sample points.
- */
-static inline errseq_t filemap_sample_wb_err(struct address_space *mapping)
-{
-	return errseq_sample(&mapping->wb_err);
-}
-
-/**
- * file_sample_sb_err - sample the current errseq_t to test for later errors
- * @file: file pointer to be sampled
- *
- * Grab the most current superblock-level errseq_t value for the given
- * struct file.
- */
-static inline errseq_t file_sample_sb_err(struct file *file)
-{
-	return errseq_sample(&file->f_path.dentry->d_sb->s_wb_err);
-}
-
 extern int vfs_fsync_range(struct file *file, loff_t start, loff_t end,
 			   int datasync);
 extern int vfs_fsync(struct file *file, int datasync);
@@ -3152,6 +2929,7 @@ extern void unlock_new_inode(struct inode *);
 extern void discard_new_inode(struct inode *);
 extern unsigned int get_next_ino(void);
 extern void evict_inodes(struct super_block *sb);
+void dump_mapping(const struct address_space *);
 
 /*
  * Userspace may rely on the the inode number being non-zero. For example, glibc
@@ -3178,6 +2956,16 @@ extern void free_inode_nonrcu(struct inode *inode);
 extern int should_remove_suid(struct dentry *);
 extern int file_remove_privs(struct file *);
 
+/*
+ * This must be used for allocating filesystems specific inodes to set
+ * up the inode reclaim context correctly.
+ */
+static inline void *
+alloc_inode_sb(struct super_block *sb, struct kmem_cache *cache, gfp_t gfp)
+{
+	return kmem_cache_alloc_lru(cache, &sb->s_inode_lru, gfp);
+}
+
 extern void __insert_inode_hash(struct inode *, unsigned long hashval);
 static inline void insert_inode_hash(struct inode *inode)
 {
@@ -3192,6 +2980,7 @@ static inline void remove_inode_hash(struct inode *inode)
 }
 
 extern void inode_sb_list_add(struct inode *inode);
+extern void inode_add_lru(struct inode *inode);
 
 extern int sb_set_blocksize(struct super_block *, int);
 extern int sb_min_blocksize(struct super_block *, int);
@@ -3199,6 +2988,7 @@ extern int sb_min_blocksize(struct super_block *, int);
 extern int generic_file_mmap(struct file *, struct vm_area_struct *);
 extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);
 extern ssize_t generic_write_checks(struct kiocb *, struct iov_iter *);
+int generic_write_checks_count(struct kiocb *iocb, loff_t *count);
 extern int generic_write_check_limits(struct file *file, loff_t pos,
 		loff_t *count);
 extern int generic_file_rw_checks(struct file *file_in, struct file *file_out);
@@ -3208,7 +2998,7 @@ extern ssize_t generic_file_read_iter(struct kiocb *, struct iov_iter *);
 extern ssize_t __generic_file_write_iter(struct kiocb *, struct iov_iter *);
 extern ssize_t generic_file_write_iter(struct kiocb *, struct iov_iter *);
 extern ssize_t generic_file_direct_write(struct kiocb *, struct iov_iter *);
-extern ssize_t generic_perform_write(struct file *, struct iov_iter *, loff_t);
+ssize_t generic_perform_write(struct kiocb *, struct iov_iter *);
 
 ssize_t vfs_iter_read(struct file *file, struct iov_iter *iter, loff_t *ppos,
 		rwf_t flags);
@@ -3242,6 +3032,7 @@ extern loff_t fixed_size_llseek(struct file *file, loff_t offset,
 		int whence, loff_t size);
 extern loff_t no_seek_end_llseek_size(struct file *, loff_t, int, loff_t);
 extern loff_t no_seek_end_llseek(struct file *, loff_t, int);
+int rw_verify_area(int, struct file *, const loff_t *, size_t);
 extern int generic_file_open(struct inode * inode, struct file * filp);
 extern int nonseekable_open(struct inode * inode, struct file * filp);
 extern int stream_open(struct inode * inode, struct file * filp);
@@ -3383,14 +3174,14 @@ extern int simple_open(struct inode *inode, struct file *file);
 extern int simple_link(struct dentry *, struct inode *, struct dentry *);
 extern int simple_unlink(struct inode *, struct dentry *);
 extern int simple_rmdir(struct inode *, struct dentry *);
+extern int simple_rename_exchange(struct inode *old_dir, struct dentry *old_dentry,
+				  struct inode *new_dir, struct dentry *new_dentry);
 extern int simple_rename(struct user_namespace *, struct inode *,
 			 struct dentry *, struct inode *, struct dentry *,
 			 unsigned int);
 extern void simple_recursive_removal(struct dentry *,
                               void (*callback)(struct dentry *));
 extern int noop_fsync(struct file *, loff_t, loff_t, int);
-extern void noop_invalidatepage(struct page *page, unsigned int offset,
-		unsigned int length);
 extern ssize_t noop_direct_IO(struct kiocb *iocb, struct iov_iter *iter);
 extern int simple_empty(struct dentry *);
 extern int simple_write_begin(struct file *file, struct address_space *mapping,
@@ -3588,12 +3379,6 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
 			  size_t len, loff_t *ppos);
 
 struct ctl_table;
-int proc_nr_files(struct ctl_table *table, int write,
-		  void *buffer, size_t *lenp, loff_t *ppos);
-int proc_nr_dentry(struct ctl_table *table, int write,
-		  void *buffer, size_t *lenp, loff_t *ppos);
-int proc_nr_inodes(struct ctl_table *table, int write,
-		   void *buffer, size_t *lenp, loff_t *ppos);
 int __init list_bdev_fs_names(char *buf, size_t size);
 
 #define __FMODE_EXEC		((__force int) FMODE_EXEC)
@@ -3681,15 +3466,4 @@ extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len,
 extern int generic_fadvise(struct file *file, loff_t offset, loff_t len,
 			   int advice);
 
-/*
- * Flush file data before changing attributes.  Caller must hold any locks
- * required to prevent further writes to this file until we're done setting
- * flags.
- */
-static inline int inode_drain_writes(struct inode *inode)
-{
-	inode_dio_wait(inode);
-	return filemap_write_and_wait(inode->i_mapping);
-}
-
 #endif /* _LINUX_FS_H */
diff --git a/include/linux/fs_api.h b/include/linux/fs_api.h
new file mode 100644
index 000000000000..83be38d6d413
--- /dev/null
+++ b/include/linux/fs_api.h
@@ -0,0 +1 @@
+#include <linux/fs.h>
diff --git a/include/linux/fs_context.h b/include/linux/fs_context.h
index 6b54982fc5f3..13fa6f3df8e4 100644
--- a/include/linux/fs_context.h
+++ b/include/linux/fs_context.h
@@ -142,6 +142,8 @@ extern void put_fs_context(struct fs_context *fc);
 extern int vfs_parse_fs_param_source(struct fs_context *fc,
 				     struct fs_parameter *param);
 extern void fc_drop_locked(struct fs_context *fc);
+int reconfigure_single(struct super_block *s,
+		       int flags, void *data);
 
 /*
  * sget() wrappers to be called from the ->get_tree() op.
diff --git a/include/linux/fs_parser.h b/include/linux/fs_parser.h
index aab0ffc6bac6..f103c91139d4 100644
--- a/include/linux/fs_parser.h
+++ b/include/linux/fs_parser.h
@@ -42,7 +42,7 @@ struct fs_parameter_spec {
 	u8			opt;	/* Option number (returned by fs_parse()) */
 	unsigned short		flags;
 #define fs_param_neg_with_no	0x0002	/* "noxxx" is negative param */
-#define fs_param_neg_with_empty	0x0004	/* "xxx=" is negative param */
+#define fs_param_can_be_empty	0x0004	/* "xxx=" is allowed */
 #define fs_param_deprecated	0x0008	/* The param is deprecated */
 	const void		*data;
 };
diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
index 8d39491c5f9f..a174cedf4d90 100644
--- a/include/linux/fscache-cache.h
+++ b/include/linux/fscache-cache.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 /* General filesystem caching backing cache interface
  *
- * Copyright (C) 2004-2007 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
  *
  * NOTE!!! See:
@@ -15,207 +15,34 @@
 #define _LINUX_FSCACHE_CACHE_H
 
 #include <linux/fscache.h>
-#include <linux/sched.h>
-#include <linux/workqueue.h>
 
-#define NR_MAXCACHES BITS_PER_LONG
-
-struct fscache_cache;
-struct fscache_cache_ops;
-struct fscache_object;
-struct fscache_operation;
-
-enum fscache_obj_ref_trace {
-	fscache_obj_get_add_to_deps,
-	fscache_obj_get_queue,
-	fscache_obj_put_alloc_fail,
-	fscache_obj_put_attach_fail,
-	fscache_obj_put_drop_obj,
-	fscache_obj_put_enq_dep,
-	fscache_obj_put_queue,
-	fscache_obj_put_work,
-	fscache_obj_ref__nr_traces
+enum fscache_cache_trace;
+enum fscache_cookie_trace;
+enum fscache_access_trace;
+
+enum fscache_cache_state {
+	FSCACHE_CACHE_IS_NOT_PRESENT,	/* No cache is present for this name */
+	FSCACHE_CACHE_IS_PREPARING,	/* A cache is preparing to come live */
+	FSCACHE_CACHE_IS_ACTIVE,	/* Attached cache is active and can be used */
+	FSCACHE_CACHE_GOT_IOERROR,	/* Attached cache stopped on I/O error */
+	FSCACHE_CACHE_IS_WITHDRAWN,	/* Attached cache is being withdrawn */
+#define NR__FSCACHE_CACHE_STATE (FSCACHE_CACHE_IS_WITHDRAWN + 1)
 };
 
 /*
- * cache tag definition
- */
-struct fscache_cache_tag {
-	struct list_head	link;
-	struct fscache_cache	*cache;		/* cache referred to by this tag */
-	unsigned long		flags;
-#define FSCACHE_TAG_RESERVED	0		/* T if tag is reserved for a cache */
-	atomic_t		usage;
-	char			name[];	/* tag name */
-};
-
-/*
- * cache definition
+ * Cache cookie.
  */
 struct fscache_cache {
 	const struct fscache_cache_ops *ops;
-	struct fscache_cache_tag *tag;		/* tag representing this cache */
-	struct kobject		*kobj;		/* system representation of this cache */
-	struct list_head	link;		/* link in list of caches */
-	size_t			max_index_size;	/* maximum size of index data */
-	char			identifier[36];	/* cache label */
-
-	/* node management */
-	struct work_struct	op_gc;		/* operation garbage collector */
-	struct list_head	object_list;	/* list of data/index objects */
-	struct list_head	op_gc_list;	/* list of ops to be deleted */
-	spinlock_t		object_list_lock;
-	spinlock_t		op_gc_list_lock;
+	struct list_head	cache_link;	/* Link in cache list */
+	void			*cache_priv;	/* Private cache data (or NULL) */
+	refcount_t		ref;
+	atomic_t		n_volumes;	/* Number of active volumes; */
+	atomic_t		n_accesses;	/* Number of in-progress accesses on the cache */
 	atomic_t		object_count;	/* no. of live objects in this cache */
-	struct fscache_object	*fsdef;		/* object for the fsdef index */
-	unsigned long		flags;
-#define FSCACHE_IOERROR		0	/* cache stopped on I/O error */
-#define FSCACHE_CACHE_WITHDRAWN	1	/* cache has been withdrawn */
-};
-
-extern wait_queue_head_t fscache_cache_cleared_wq;
-
-/*
- * operation to be applied to a cache object
- * - retrieval initiation operations are done in the context of the process
- *   that issued them, and not in an async thread pool
- */
-typedef void (*fscache_operation_release_t)(struct fscache_operation *op);
-typedef void (*fscache_operation_processor_t)(struct fscache_operation *op);
-typedef void (*fscache_operation_cancel_t)(struct fscache_operation *op);
-
-enum fscache_operation_state {
-	FSCACHE_OP_ST_BLANK,		/* Op is not yet submitted */
-	FSCACHE_OP_ST_INITIALISED,	/* Op is initialised */
-	FSCACHE_OP_ST_PENDING,		/* Op is blocked from running */
-	FSCACHE_OP_ST_IN_PROGRESS,	/* Op is in progress */
-	FSCACHE_OP_ST_COMPLETE,		/* Op is complete */
-	FSCACHE_OP_ST_CANCELLED,	/* Op has been cancelled */
-	FSCACHE_OP_ST_DEAD		/* Op is now dead */
-};
-
-struct fscache_operation {
-	struct work_struct	work;		/* record for async ops */
-	struct list_head	pend_link;	/* link in object->pending_ops */
-	struct fscache_object	*object;	/* object to be operated upon */
-
-	unsigned long		flags;
-#define FSCACHE_OP_TYPE		0x000f	/* operation type */
-#define FSCACHE_OP_ASYNC	0x0001	/* - async op, processor may sleep for disk */
-#define FSCACHE_OP_MYTHREAD	0x0002	/* - processing is done be issuing thread, not pool */
-#define FSCACHE_OP_WAITING	4	/* cleared when op is woken */
-#define FSCACHE_OP_EXCLUSIVE	5	/* exclusive op, other ops must wait */
-#define FSCACHE_OP_DEC_READ_CNT	6	/* decrement object->n_reads on destruction */
-#define FSCACHE_OP_UNUSE_COOKIE	7	/* call fscache_unuse_cookie() on completion */
-#define FSCACHE_OP_KEEP_FLAGS	0x00f0	/* flags to keep when repurposing an op */
-
-	enum fscache_operation_state state;
-	atomic_t		usage;
-	unsigned		debug_id;	/* debugging ID */
-
-	/* operation processor callback
-	 * - can be NULL if FSCACHE_OP_WAITING is going to be used to perform
-	 *   the op in a non-pool thread */
-	fscache_operation_processor_t processor;
-
-	/* Operation cancellation cleanup (optional) */
-	fscache_operation_cancel_t cancel;
-
-	/* operation releaser */
-	fscache_operation_release_t release;
-};
-
-extern atomic_t fscache_op_debug_id;
-extern void fscache_op_work_func(struct work_struct *work);
-
-extern void fscache_enqueue_operation(struct fscache_operation *);
-extern void fscache_op_complete(struct fscache_operation *, bool);
-extern void fscache_put_operation(struct fscache_operation *);
-extern void fscache_operation_init(struct fscache_cookie *,
-				   struct fscache_operation *,
-				   fscache_operation_processor_t,
-				   fscache_operation_cancel_t,
-				   fscache_operation_release_t);
-
-/*
- * data read operation
- */
-struct fscache_retrieval {
-	struct fscache_operation op;
-	struct fscache_cookie	*cookie;	/* The netfs cookie */
-	struct address_space	*mapping;	/* netfs pages */
-	fscache_rw_complete_t	end_io_func;	/* function to call on I/O completion */
-	void			*context;	/* netfs read context (pinned) */
-	struct list_head	to_do;		/* list of things to be done by the backend */
-	atomic_t		n_pages;	/* number of pages to be retrieved */
-};
-
-typedef int (*fscache_page_retrieval_func_t)(struct fscache_retrieval *op,
-					     struct page *page,
-					     gfp_t gfp);
-
-typedef int (*fscache_pages_retrieval_func_t)(struct fscache_retrieval *op,
-					      struct list_head *pages,
-					      unsigned *nr_pages,
-					      gfp_t gfp);
-
-/**
- * fscache_get_retrieval - Get an extra reference on a retrieval operation
- * @op: The retrieval operation to get a reference on
- *
- * Get an extra reference on a retrieval operation.
- */
-static inline
-struct fscache_retrieval *fscache_get_retrieval(struct fscache_retrieval *op)
-{
-	atomic_inc(&op->op.usage);
-	return op;
-}
-
-/**
- * fscache_enqueue_retrieval - Enqueue a retrieval operation for processing
- * @op: The retrieval operation affected
- *
- * Enqueue a retrieval operation for processing by the FS-Cache thread pool.
- */
-static inline void fscache_enqueue_retrieval(struct fscache_retrieval *op)
-{
-	fscache_enqueue_operation(&op->op);
-}
-
-/**
- * fscache_retrieval_complete - Record (partial) completion of a retrieval
- * @op: The retrieval operation affected
- * @n_pages: The number of pages to account for
- */
-static inline void fscache_retrieval_complete(struct fscache_retrieval *op,
-					      int n_pages)
-{
-	if (atomic_sub_return_relaxed(n_pages, &op->n_pages) <= 0)
-		fscache_op_complete(&op->op, false);
-}
-
-/**
- * fscache_put_retrieval - Drop a reference to a retrieval operation
- * @op: The retrieval operation affected
- *
- * Drop a reference to a retrieval operation.
- */
-static inline void fscache_put_retrieval(struct fscache_retrieval *op)
-{
-	fscache_put_operation(&op->op);
-}
-
-/*
- * cached page storage work item
- * - used to do three things:
- *   - batch writes to the cache
- *   - do cache writes asynchronously
- *   - defer writes until cache object lookup completion
- */
-struct fscache_storage {
-	struct fscache_operation op;
-	pgoff_t			store_limit;	/* don't write more than this */
+	unsigned int		debug_id;
+	enum fscache_cache_state state;
+	char			*name;
 };
 
 /*
@@ -225,341 +52,154 @@ struct fscache_cache_ops {
 	/* name of cache provider */
 	const char *name;
 
-	/* allocate an object record for a cookie */
-	struct fscache_object *(*alloc_object)(struct fscache_cache *cache,
-					       struct fscache_cookie *cookie);
-
-	/* look up the object for a cookie
-	 * - return -ETIMEDOUT to be requeued
-	 */
-	int (*lookup_object)(struct fscache_object *object);
-
-	/* finished looking up */
-	void (*lookup_complete)(struct fscache_object *object);
-
-	/* increment the usage count on this object (may fail if unmounting) */
-	struct fscache_object *(*grab_object)(struct fscache_object *object,
-					      enum fscache_obj_ref_trace why);
+	/* Acquire a volume */
+	void (*acquire_volume)(struct fscache_volume *volume);
 
-	/* pin an object in the cache */
-	int (*pin_object)(struct fscache_object *object);
+	/* Free the cache's data attached to a volume */
+	void (*free_volume)(struct fscache_volume *volume);
 
-	/* unpin an object in the cache */
-	void (*unpin_object)(struct fscache_object *object);
+	/* Look up a cookie in the cache */
+	bool (*lookup_cookie)(struct fscache_cookie *cookie);
 
-	/* check the consistency between the backing cache and the FS-Cache
-	 * cookie */
-	int (*check_consistency)(struct fscache_operation *op);
+	/* Withdraw an object without any cookie access counts held */
+	void (*withdraw_cookie)(struct fscache_cookie *cookie);
 
-	/* store the updated auxiliary data on an object */
-	void (*update_object)(struct fscache_object *object);
+	/* Change the size of a data object */
+	void (*resize_cookie)(struct netfs_cache_resources *cres,
+			      loff_t new_size);
 
 	/* Invalidate an object */
-	void (*invalidate_object)(struct fscache_operation *op);
-
-	/* discard the resources pinned by an object and effect retirement if
-	 * necessary */
-	void (*drop_object)(struct fscache_object *object);
-
-	/* dispose of a reference to an object */
-	void (*put_object)(struct fscache_object *object,
-			   enum fscache_obj_ref_trace why);
-
-	/* sync a cache */
-	void (*sync_cache)(struct fscache_cache *cache);
-
-	/* notification that the attributes of a non-index object (such as
-	 * i_size) have changed */
-	int (*attr_changed)(struct fscache_object *object);
-
-	/* reserve space for an object's data and associated metadata */
-	int (*reserve_space)(struct fscache_object *object, loff_t i_size);
-
-	/* request a backing block for a page be read or allocated in the
-	 * cache */
-	fscache_page_retrieval_func_t read_or_alloc_page;
-
-	/* request backing blocks for a list of pages be read or allocated in
-	 * the cache */
-	fscache_pages_retrieval_func_t read_or_alloc_pages;
-
-	/* request a backing block for a page be allocated in the cache so that
-	 * it can be written directly */
-	fscache_page_retrieval_func_t allocate_page;
-
-	/* request backing blocks for pages be allocated in the cache so that
-	 * they can be written directly */
-	fscache_pages_retrieval_func_t allocate_pages;
-
-	/* write a page to its backing block in the cache */
-	int (*write_page)(struct fscache_storage *op, struct page *page);
-
-	/* detach backing block from a page (optional)
-	 * - must release the cookie lock before returning
-	 * - may sleep
-	 */
-	void (*uncache_page)(struct fscache_object *object,
-			     struct page *page);
-
-	/* dissociate a cache from all the pages it was backing */
-	void (*dissociate_pages)(struct fscache_cache *cache);
+	bool (*invalidate_cookie)(struct fscache_cookie *cookie);
 
-	/* Begin a read operation for the netfs lib */
-	int (*begin_read_operation)(struct netfs_read_request *rreq,
-				    struct fscache_retrieval *op);
-};
-
-extern struct fscache_cookie fscache_fsdef_index;
+	/* Begin an operation for the netfs lib */
+	bool (*begin_operation)(struct netfs_cache_resources *cres,
+				enum fscache_want_state want_state);
 
-/*
- * Event list for fscache_object::{event_mask,events}
- */
-enum {
-	FSCACHE_OBJECT_EV_NEW_CHILD,	/* T if object has a new child */
-	FSCACHE_OBJECT_EV_PARENT_READY,	/* T if object's parent is ready */
-	FSCACHE_OBJECT_EV_UPDATE,	/* T if object should be updated */
-	FSCACHE_OBJECT_EV_INVALIDATE,	/* T if cache requested object invalidation */
-	FSCACHE_OBJECT_EV_CLEARED,	/* T if accessors all gone */
-	FSCACHE_OBJECT_EV_ERROR,	/* T if fatal error occurred during processing */
-	FSCACHE_OBJECT_EV_KILL,		/* T if netfs relinquished or cache withdrew object */
-	NR_FSCACHE_OBJECT_EVENTS
-};
-
-#define FSCACHE_OBJECT_EVENTS_MASK ((1UL << NR_FSCACHE_OBJECT_EVENTS) - 1)
-
-/*
- * States for object state machine.
- */
-struct fscache_transition {
-	unsigned long events;
-	const struct fscache_state *transit_to;
+	/* Prepare to write to a live cache object */
+	void (*prepare_to_write)(struct fscache_cookie *cookie);
 };
 
-struct fscache_state {
-	char name[24];
-	char short_name[8];
-	const struct fscache_state *(*work)(struct fscache_object *object,
-					    int event);
-	const struct fscache_transition transitions[];
-};
+extern struct workqueue_struct *fscache_wq;
+extern wait_queue_head_t fscache_clearance_waiters;
 
 /*
- * on-disk cache file or index handle
+ * out-of-line cache backend functions
  */
-struct fscache_object {
-	const struct fscache_state *state;	/* Object state machine state */
-	const struct fscache_transition *oob_table; /* OOB state transition table */
-	int			debug_id;	/* debugging ID */
-	int			n_children;	/* number of child objects */
-	int			n_ops;		/* number of extant ops on object */
-	int			n_obj_ops;	/* number of object ops outstanding on object */
-	int			n_in_progress;	/* number of ops in progress */
-	int			n_exclusive;	/* number of exclusive ops queued or in progress */
-	atomic_t		n_reads;	/* number of read ops in progress */
-	spinlock_t		lock;		/* state and operations lock */
-
-	unsigned long		lookup_jif;	/* time at which lookup started */
-	unsigned long		oob_event_mask;	/* OOB events this object is interested in */
-	unsigned long		event_mask;	/* events this object is interested in */
-	unsigned long		events;		/* events to be processed by this object
-						 * (order is important - using fls) */
-
-	unsigned long		flags;
-#define FSCACHE_OBJECT_LOCK		0	/* T if object is busy being processed */
-#define FSCACHE_OBJECT_PENDING_WRITE	1	/* T if object has pending write */
-#define FSCACHE_OBJECT_WAITING		2	/* T if object is waiting on its parent */
-#define FSCACHE_OBJECT_IS_LIVE		3	/* T if object is not withdrawn or relinquished */
-#define FSCACHE_OBJECT_IS_LOOKED_UP	4	/* T if object has been looked up */
-#define FSCACHE_OBJECT_IS_AVAILABLE	5	/* T if object has become active */
-#define FSCACHE_OBJECT_RETIRED		6	/* T if object was retired on relinquishment */
-#define FSCACHE_OBJECT_KILLED_BY_CACHE	7	/* T if object was killed by the cache */
-#define FSCACHE_OBJECT_RUN_AFTER_DEAD	8	/* T if object has been dispatched after death */
-
-	struct list_head	cache_link;	/* link in cache->object_list */
-	struct hlist_node	cookie_link;	/* link in cookie->backing_objects */
-	struct fscache_cache	*cache;		/* cache that supplied this object */
-	struct fscache_cookie	*cookie;	/* netfs's file/index object */
-	struct fscache_object	*parent;	/* parent object */
-	struct work_struct	work;		/* attention scheduling record */
-	struct list_head	dependents;	/* FIFO of dependent objects */
-	struct list_head	dep_link;	/* link in parent's dependents list */
-	struct list_head	pending_ops;	/* unstarted operations on this object */
-	pgoff_t			store_limit;	/* current storage limit */
-	loff_t			store_limit_l;	/* current storage limit */
-};
-
-extern void fscache_object_init(struct fscache_object *, struct fscache_cookie *,
-				struct fscache_cache *);
-extern void fscache_object_destroy(struct fscache_object *);
-
-extern void fscache_object_lookup_negative(struct fscache_object *object);
-extern void fscache_obtained_object(struct fscache_object *object);
-
-static inline bool fscache_object_is_live(struct fscache_object *object)
-{
-	return test_bit(FSCACHE_OBJECT_IS_LIVE, &object->flags);
-}
-
-static inline bool fscache_object_is_dying(struct fscache_object *object)
-{
-	return !fscache_object_is_live(object);
-}
-
-static inline bool fscache_object_is_available(struct fscache_object *object)
-{
-	return test_bit(FSCACHE_OBJECT_IS_AVAILABLE, &object->flags);
-}
+extern struct rw_semaphore fscache_addremove_sem;
+extern struct fscache_cache *fscache_acquire_cache(const char *name);
+extern void fscache_relinquish_cache(struct fscache_cache *cache);
+extern int fscache_add_cache(struct fscache_cache *cache,
+			     const struct fscache_cache_ops *ops,
+			     void *cache_priv);
+extern void fscache_withdraw_cache(struct fscache_cache *cache);
+extern void fscache_withdraw_volume(struct fscache_volume *volume);
+extern void fscache_withdraw_cookie(struct fscache_cookie *cookie);
 
-static inline bool fscache_cache_is_broken(struct fscache_object *object)
-{
-	return test_bit(FSCACHE_IOERROR, &object->cache->flags);
-}
+extern void fscache_io_error(struct fscache_cache *cache);
 
-static inline bool fscache_object_is_active(struct fscache_object *object)
-{
-	return fscache_object_is_available(object) &&
-		fscache_object_is_live(object) &&
-		!fscache_cache_is_broken(object);
-}
+extern void fscache_end_volume_access(struct fscache_volume *volume,
+				      struct fscache_cookie *cookie,
+				      enum fscache_access_trace why);
+
+extern struct fscache_cookie *fscache_get_cookie(struct fscache_cookie *cookie,
+						 enum fscache_cookie_trace where);
+extern void fscache_put_cookie(struct fscache_cookie *cookie,
+			       enum fscache_cookie_trace where);
+extern void fscache_end_cookie_access(struct fscache_cookie *cookie,
+				      enum fscache_access_trace why);
+extern void fscache_cookie_lookup_negative(struct fscache_cookie *cookie);
+extern void fscache_resume_after_invalidation(struct fscache_cookie *cookie);
+extern void fscache_caching_failed(struct fscache_cookie *cookie);
+extern bool fscache_wait_for_operation(struct netfs_cache_resources *cred,
+				       enum fscache_want_state state);
 
 /**
- * fscache_object_destroyed - Note destruction of an object in a cache
- * @cache: The cache from which the object came
+ * fscache_cookie_state - Read the state of a cookie
+ * @cookie: The cookie to query
  *
- * Note the destruction and deallocation of an object record in a cache.
+ * Get the state of a cookie, imposing an ordering between the cookie contents
+ * and the state value.  Paired with fscache_set_cookie_state().
  */
-static inline void fscache_object_destroyed(struct fscache_cache *cache)
+static inline
+enum fscache_cookie_state fscache_cookie_state(struct fscache_cookie *cookie)
 {
-	if (atomic_dec_and_test(&cache->object_count))
-		wake_up_all(&fscache_cache_cleared_wq);
+	return smp_load_acquire(&cookie->state);
 }
 
 /**
- * fscache_object_lookup_error - Note an object encountered an error
- * @object: The object on which the error was encountered
+ * fscache_get_key - Get a pointer to the cookie key
+ * @cookie: The cookie to query
  *
- * Note that an object encountered a fatal error (usually an I/O error) and
- * that it should be withdrawn as soon as possible.
+ * Return a pointer to the where a cookie's key is stored.
  */
-static inline void fscache_object_lookup_error(struct fscache_object *object)
+static inline void *fscache_get_key(struct fscache_cookie *cookie)
 {
-	set_bit(FSCACHE_OBJECT_EV_ERROR, &object->events);
+	if (cookie->key_len <= sizeof(cookie->inline_key))
+		return cookie->inline_key;
+	else
+		return cookie->key;
 }
 
-/**
- * fscache_set_store_limit - Set the maximum size to be stored in an object
- * @object: The object to set the maximum on
- * @i_size: The limit to set in bytes
- *
- * Set the maximum size an object is permitted to reach, implying the highest
- * byte that may be written.  Intended to be called by the attr_changed() op.
- *
- * See Documentation/filesystems/caching/backend-api.rst for a complete
- * description.
- */
-static inline
-void fscache_set_store_limit(struct fscache_object *object, loff_t i_size)
+static inline struct fscache_cookie *fscache_cres_cookie(struct netfs_cache_resources *cres)
 {
-	object->store_limit_l = i_size;
-	object->store_limit = i_size >> PAGE_SHIFT;
-	if (i_size & ~PAGE_MASK)
-		object->store_limit++;
+	return cres->cache_priv;
 }
 
 /**
- * fscache_end_io - End a retrieval operation on a page
- * @op: The FS-Cache operation covering the retrieval
- * @page: The page that was to be fetched
- * @error: The error code (0 if successful)
+ * fscache_count_object - Tell fscache that an object has been added
+ * @cache: The cache to account to
  *
- * Note the end of an operation to retrieve a page, as covered by a particular
- * operation record.
+ * Tell fscache that an object has been added to the cache.  This prevents the
+ * cache from tearing down the cache structure until the object is uncounted.
  */
-static inline void fscache_end_io(struct fscache_retrieval *op,
-				  struct page *page, int error)
+static inline void fscache_count_object(struct fscache_cache *cache)
 {
-	op->end_io_func(page, op->context, error);
-}
-
-static inline void __fscache_use_cookie(struct fscache_cookie *cookie)
-{
-	atomic_inc(&cookie->n_active);
+	atomic_inc(&cache->object_count);
 }
 
 /**
- * fscache_use_cookie - Request usage of cookie attached to an object
- * @object: Object description
- * 
- * Request usage of the cookie attached to an object.  NULL is returned if the
- * relinquishment had reduced the cookie usage count to 0.
+ * fscache_uncount_object - Tell fscache that an object has been removed
+ * @cache: The cache to account to
+ *
+ * Tell fscache that an object has been removed from the cache and will no
+ * longer be accessed.  After this point, the cache cookie may be destroyed.
  */
-static inline bool fscache_use_cookie(struct fscache_object *object)
-{
-	struct fscache_cookie *cookie = object->cookie;
-	return atomic_inc_not_zero(&cookie->n_active) != 0;
-}
-
-static inline bool __fscache_unuse_cookie(struct fscache_cookie *cookie)
-{
-	return atomic_dec_and_test(&cookie->n_active);
-}
-
-static inline void __fscache_wake_unused_cookie(struct fscache_cookie *cookie)
+static inline void fscache_uncount_object(struct fscache_cache *cache)
 {
-	wake_up_var(&cookie->n_active);
+	if (atomic_dec_and_test(&cache->object_count))
+		wake_up_all(&fscache_clearance_waiters);
 }
 
 /**
- * fscache_unuse_cookie - Cease usage of cookie attached to an object
- * @object: Object description
- * 
- * Cease usage of the cookie attached to an object.  When the users count
- * reaches zero then the cookie relinquishment will be permitted to proceed.
- */
-static inline void fscache_unuse_cookie(struct fscache_object *object)
-{
-	struct fscache_cookie *cookie = object->cookie;
-	if (__fscache_unuse_cookie(cookie))
-		__fscache_wake_unused_cookie(cookie);
-}
-
-/*
- * out-of-line cache backend functions
- */
-extern __printf(3, 4)
-void fscache_init_cache(struct fscache_cache *cache,
-			const struct fscache_cache_ops *ops,
-			const char *idfmt, ...);
-
-extern int fscache_add_cache(struct fscache_cache *cache,
-			     struct fscache_object *fsdef,
-			     const char *tagname);
-extern void fscache_withdraw_cache(struct fscache_cache *cache);
-
-extern void fscache_io_error(struct fscache_cache *cache);
-
-extern void fscache_mark_page_cached(struct fscache_retrieval *op,
-				     struct page *page);
-
-extern void fscache_mark_pages_cached(struct fscache_retrieval *op,
-				      struct pagevec *pagevec);
-
-extern bool fscache_object_sleep_till_congested(signed long *timeoutp);
-
-extern enum fscache_checkaux fscache_check_aux(struct fscache_object *object,
-					       const void *data,
-					       uint16_t datalen,
-					       loff_t object_size);
-
-extern void fscache_object_retrying_stale(struct fscache_object *object);
-
-enum fscache_why_object_killed {
-	FSCACHE_OBJECT_IS_STALE,
-	FSCACHE_OBJECT_NO_SPACE,
-	FSCACHE_OBJECT_WAS_RETIRED,
-	FSCACHE_OBJECT_WAS_CULLED,
-};
-extern void fscache_object_mark_killed(struct fscache_object *object,
-				       enum fscache_why_object_killed why);
+ * fscache_wait_for_objects - Wait for all objects to be withdrawn
+ * @cache: The cache to query
+ *
+ * Wait for all extant objects in a cache to finish being withdrawn
+ * and go away.
+ */
+static inline void fscache_wait_for_objects(struct fscache_cache *cache)
+{
+	wait_event(fscache_clearance_waiters,
+		   atomic_read(&cache->object_count) == 0);
+}
+
+#ifdef CONFIG_FSCACHE_STATS
+extern atomic_t fscache_n_read;
+extern atomic_t fscache_n_write;
+extern atomic_t fscache_n_no_write_space;
+extern atomic_t fscache_n_no_create_space;
+extern atomic_t fscache_n_culled;
+#define fscache_count_read() atomic_inc(&fscache_n_read)
+#define fscache_count_write() atomic_inc(&fscache_n_write)
+#define fscache_count_no_write_space() atomic_inc(&fscache_n_no_write_space)
+#define fscache_count_no_create_space() atomic_inc(&fscache_n_no_create_space)
+#define fscache_count_culled() atomic_inc(&fscache_n_culled)
+#else
+#define fscache_count_read() do {} while(0)
+#define fscache_count_write() do {} while(0)
+#define fscache_count_no_write_space() do {} while(0)
+#define fscache_count_no_create_space() do {} while(0)
+#define fscache_count_culled() do {} while(0)
+#endif
 
 #endif /* _LINUX_FSCACHE_CACHE_H */
diff --git a/include/linux/fscache.h b/include/linux/fscache.h
index a4dab5998613..e25539072463 100644
--- a/include/linux/fscache.h
+++ b/include/linux/fscache.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 /* General filesystem caching interface
  *
- * Copyright (C) 2004-2007 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
  * Written by David Howells (dhowells@redhat.com)
  *
  * NOTE!!! See:
@@ -15,146 +15,126 @@
 #define _LINUX_FSCACHE_H
 
 #include <linux/fs.h>
-#include <linux/list.h>
-#include <linux/pagemap.h>
-#include <linux/pagevec.h>
-#include <linux/list_bl.h>
 #include <linux/netfs.h>
+#include <linux/writeback.h>
 
 #if defined(CONFIG_FSCACHE) || defined(CONFIG_FSCACHE_MODULE)
+#define __fscache_available (1)
 #define fscache_available() (1)
+#define fscache_volume_valid(volume) (volume)
 #define fscache_cookie_valid(cookie) (cookie)
+#define fscache_resources_valid(cres) ((cres)->cache_priv)
+#define fscache_cookie_enabled(cookie) (cookie && !test_bit(FSCACHE_COOKIE_DISABLED, &cookie->flags))
 #else
+#define __fscache_available (0)
 #define fscache_available() (0)
+#define fscache_volume_valid(volume) (0)
 #define fscache_cookie_valid(cookie) (0)
+#define fscache_resources_valid(cres) (false)
+#define fscache_cookie_enabled(cookie) (0)
 #endif
 
-
-/* pattern used to fill dead space in an index entry */
-#define FSCACHE_INDEX_DEADFILL_PATTERN 0x79
-
-struct pagevec;
-struct fscache_cache_tag;
 struct fscache_cookie;
-struct fscache_netfs;
-struct netfs_read_request;
-
-typedef void (*fscache_rw_complete_t)(struct page *page,
-				      void *context,
-				      int error);
-
-/* result of index entry consultation */
-enum fscache_checkaux {
-	FSCACHE_CHECKAUX_OKAY,		/* entry okay as is */
-	FSCACHE_CHECKAUX_NEEDS_UPDATE,	/* entry requires update */
-	FSCACHE_CHECKAUX_OBSOLETE,	/* entry requires deletion */
-};
 
-/*
- * fscache cookie definition
- */
-struct fscache_cookie_def {
-	/* name of cookie type */
-	char name[16];
-
-	/* cookie type */
-	uint8_t type;
-#define FSCACHE_COOKIE_TYPE_INDEX	0
-#define FSCACHE_COOKIE_TYPE_DATAFILE	1
-
-	/* select the cache into which to insert an entry in this index
-	 * - optional
-	 * - should return a cache identifier or NULL to cause the cache to be
-	 *   inherited from the parent if possible or the first cache picked
-	 *   for a non-index file if not
-	 */
-	struct fscache_cache_tag *(*select_cache)(
-		const void *parent_netfs_data,
-		const void *cookie_netfs_data);
-
-	/* consult the netfs about the state of an object
-	 * - this function can be absent if the index carries no state data
-	 * - the netfs data from the cookie being used as the target is
-	 *   presented, as is the auxiliary data and the object size
-	 */
-	enum fscache_checkaux (*check_aux)(void *cookie_netfs_data,
-					   const void *data,
-					   uint16_t datalen,
-					   loff_t object_size);
-
-	/* get an extra reference on a read context
-	 * - this function can be absent if the completion function doesn't
-	 *   require a context
-	 */
-	void (*get_context)(void *cookie_netfs_data, void *context);
+#define FSCACHE_ADV_SINGLE_CHUNK	0x01 /* The object is a single chunk of data */
+#define FSCACHE_ADV_WRITE_CACHE		0x00 /* Do cache if written to locally */
+#define FSCACHE_ADV_WRITE_NOCACHE	0x02 /* Don't cache if written to locally */
 
-	/* release an extra reference on a read context
-	 * - this function can be absent if the completion function doesn't
-	 *   require a context
-	 */
-	void (*put_context)(void *cookie_netfs_data, void *context);
+#define FSCACHE_INVAL_DIO_WRITE		0x01 /* Invalidate due to DIO write */
 
-	/* indicate page that now have cache metadata retained
-	 * - this function should mark the specified page as now being cached
-	 * - the page will have been marked with PG_fscache before this is
-	 *   called, so this is optional
-	 */
-	void (*mark_page_cached)(void *cookie_netfs_data,
-				 struct address_space *mapping,
-				 struct page *page);
+enum fscache_want_state {
+	FSCACHE_WANT_PARAMS,
+	FSCACHE_WANT_WRITE,
+	FSCACHE_WANT_READ,
 };
 
 /*
- * fscache cached network filesystem type
- * - name, version and ops must be filled in before registration
- * - all other fields will be set during registration
+ * Data object state.
+ */
+enum fscache_cookie_state {
+	FSCACHE_COOKIE_STATE_QUIESCENT,		/* The cookie is uncached */
+	FSCACHE_COOKIE_STATE_LOOKING_UP,	/* The cache object is being looked up */
+	FSCACHE_COOKIE_STATE_CREATING,		/* The cache object is being created */
+	FSCACHE_COOKIE_STATE_ACTIVE,		/* The cache is active, readable and writable */
+	FSCACHE_COOKIE_STATE_INVALIDATING,	/* The cache is being invalidated */
+	FSCACHE_COOKIE_STATE_FAILED,		/* The cache failed, withdraw to clear */
+	FSCACHE_COOKIE_STATE_LRU_DISCARDING,	/* The cookie is being discarded by the LRU */
+	FSCACHE_COOKIE_STATE_WITHDRAWING,	/* The cookie is being withdrawn */
+	FSCACHE_COOKIE_STATE_RELINQUISHING,	/* The cookie is being relinquished */
+	FSCACHE_COOKIE_STATE_DROPPED,		/* The cookie has been dropped */
+#define FSCACHE_COOKIE_STATE__NR (FSCACHE_COOKIE_STATE_DROPPED + 1)
+} __attribute__((mode(byte)));
+
+/*
+ * Volume representation cookie.
  */
-struct fscache_netfs {
-	uint32_t			version;	/* indexing version */
-	const char			*name;		/* filesystem name */
-	struct fscache_cookie		*primary_index;
+struct fscache_volume {
+	refcount_t			ref;
+	atomic_t			n_cookies;	/* Number of data cookies in volume */
+	atomic_t			n_accesses;	/* Number of cache accesses in progress */
+	unsigned int			debug_id;
+	unsigned int			key_hash;	/* Hash of key string */
+	char				*key;		/* Volume ID, eg. "afs@example.com@1234" */
+	struct list_head		proc_link;	/* Link in /proc/fs/fscache/volumes */
+	struct hlist_bl_node		hash_link;	/* Link in hash table */
+	struct work_struct		work;
+	struct fscache_cache		*cache;		/* The cache in which this resides */
+	void				*cache_priv;	/* Cache private data */
+	spinlock_t			lock;
+	unsigned long			flags;
+#define FSCACHE_VOLUME_RELINQUISHED	0	/* Volume is being cleaned up */
+#define FSCACHE_VOLUME_INVALIDATE	1	/* Volume was invalidated */
+#define FSCACHE_VOLUME_COLLIDED_WITH	2	/* Volume was collided with */
+#define FSCACHE_VOLUME_ACQUIRE_PENDING	3	/* Volume is waiting to complete acquisition */
+#define FSCACHE_VOLUME_CREATING		4	/* Volume is being created on disk */
+	u8				coherency_len;	/* Length of the coherency data */
+	u8				coherency[];	/* Coherency data */
 };
 
 /*
- * data file or index object cookie
+ * Data file representation cookie.
  * - a file will only appear in one cache
  * - a request to cache a file may or may not be honoured, subject to
  *   constraints such as disk space
  * - indices are created on disk just-in-time
  */
 struct fscache_cookie {
-	refcount_t			ref;		/* number of users of this cookie */
-	atomic_t			n_children;	/* number of children of this cookie */
-	atomic_t			n_active;	/* number of active users of netfs ptrs */
+	refcount_t			ref;
+	atomic_t			n_active;	/* number of active users of cookie */
+	atomic_t			n_accesses;	/* Number of cache accesses in progress */
 	unsigned int			debug_id;
+	unsigned int			inval_counter;	/* Number of invalidations made */
 	spinlock_t			lock;
-	spinlock_t			stores_lock;	/* lock on page store tree */
-	struct hlist_head		backing_objects; /* object(s) backing this file/index */
-	const struct fscache_cookie_def	*def;		/* definition */
-	struct fscache_cookie		*parent;	/* parent of this entry */
+	struct fscache_volume		*volume;	/* Parent volume of this file. */
+	void				*cache_priv;	/* Cache-side representation */
 	struct hlist_bl_node		hash_link;	/* Link in hash table */
 	struct list_head		proc_link;	/* Link in proc list */
-	void				*netfs_data;	/* back pointer to netfs */
-	struct radix_tree_root		stores;		/* pages to be stored on this cookie */
-#define FSCACHE_COOKIE_PENDING_TAG	0		/* pages tag: pending write to cache */
-#define FSCACHE_COOKIE_STORING_TAG	1		/* pages tag: writing to cache */
-
+	struct list_head		commit_link;	/* Link in commit queue */
+	struct work_struct		work;		/* Commit/relinq/withdraw work */
+	loff_t				object_size;	/* Size of the netfs object */
+	unsigned long			unused_at;	/* Time at which unused (jiffies) */
 	unsigned long			flags;
-#define FSCACHE_COOKIE_LOOKING_UP	0	/* T if non-index cookie being looked up still */
-#define FSCACHE_COOKIE_NO_DATA_YET	1	/* T if new object with no cached data yet */
-#define FSCACHE_COOKIE_UNAVAILABLE	2	/* T if cookie is unavailable (error, etc) */
-#define FSCACHE_COOKIE_INVALIDATING	3	/* T if cookie is being invalidated */
-#define FSCACHE_COOKIE_RELINQUISHED	4	/* T if cookie has been relinquished */
-#define FSCACHE_COOKIE_ENABLED		5	/* T if cookie is enabled */
-#define FSCACHE_COOKIE_ENABLEMENT_LOCK	6	/* T if cookie is being en/disabled */
-#define FSCACHE_COOKIE_AUX_UPDATED	8	/* T if the auxiliary data was updated */
-#define FSCACHE_COOKIE_ACQUIRED		9	/* T if cookie is in use */
-#define FSCACHE_COOKIE_RELINQUISHING	10	/* T if cookie is being relinquished */
-
-	u8				type;		/* Type of object */
+#define FSCACHE_COOKIE_RELINQUISHED	0		/* T if cookie has been relinquished */
+#define FSCACHE_COOKIE_RETIRED		1		/* T if this cookie has retired on relinq */
+#define FSCACHE_COOKIE_IS_CACHING	2		/* T if this cookie is cached */
+#define FSCACHE_COOKIE_NO_DATA_TO_READ	3		/* T if this cookie has nothing to read */
+#define FSCACHE_COOKIE_NEEDS_UPDATE	4		/* T if attrs have been updated */
+#define FSCACHE_COOKIE_HAS_BEEN_CACHED	5		/* T if cookie needs withdraw-on-relinq */
+#define FSCACHE_COOKIE_DISABLED		6		/* T if cookie has been disabled */
+#define FSCACHE_COOKIE_LOCAL_WRITE	7		/* T if cookie has been modified locally */
+#define FSCACHE_COOKIE_NO_ACCESS_WAKE	8		/* T if no wake when n_accesses goes 0 */
+#define FSCACHE_COOKIE_DO_RELINQUISH	9		/* T if this cookie needs relinquishment */
+#define FSCACHE_COOKIE_DO_WITHDRAW	10		/* T if this cookie needs withdrawing */
+#define FSCACHE_COOKIE_DO_LRU_DISCARD	11		/* T if this cookie needs LRU discard */
+#define FSCACHE_COOKIE_DO_PREP_TO_WRITE	12		/* T if cookie needs write preparation */
+#define FSCACHE_COOKIE_HAVE_DATA	13		/* T if this cookie has data stored */
+#define FSCACHE_COOKIE_IS_HASHED	14		/* T if this cookie is hashed */
+
+	enum fscache_cookie_state	state;
+	u8				advice;		/* FSCACHE_ADV_* */
 	u8				key_len;	/* Length of index key */
 	u8				aux_len;	/* Length of auxiliary data */
-	u32				key_hash;	/* Hash of parent, type, key, len */
+	u32				key_hash;	/* Hash of volume, key, len */
 	union {
 		void			*key;		/* Index key */
 		u8			inline_key[16];	/* - If the key is short enough */
@@ -165,11 +145,6 @@ struct fscache_cookie {
 	};
 };
 
-static inline bool fscache_cookie_enabled(struct fscache_cookie *cookie)
-{
-	return test_bit(FSCACHE_COOKIE_ENABLED, &cookie->flags);
-}
-
 /*
  * slow-path functions for when there is actually caching available, and the
  * netfs does actually have a valid token
@@ -177,699 +152,542 @@ static inline bool fscache_cookie_enabled(struct fscache_cookie *cookie)
  * - these are undefined symbols when FS-Cache is not configured and the
  *   optimiser takes care of not using them
  */
-extern int __fscache_register_netfs(struct fscache_netfs *);
-extern void __fscache_unregister_netfs(struct fscache_netfs *);
-extern struct fscache_cache_tag *__fscache_lookup_cache_tag(const char *);
-extern void __fscache_release_cache_tag(struct fscache_cache_tag *);
+extern struct fscache_volume *__fscache_acquire_volume(const char *, const char *,
+						       const void *, size_t);
+extern void __fscache_relinquish_volume(struct fscache_volume *, const void *, bool);
 
 extern struct fscache_cookie *__fscache_acquire_cookie(
-	struct fscache_cookie *,
-	const struct fscache_cookie_def *,
+	struct fscache_volume *,
+	u8,
 	const void *, size_t,
 	const void *, size_t,
-	void *, loff_t, bool);
-extern void __fscache_relinquish_cookie(struct fscache_cookie *, const void *, bool);
-extern int __fscache_check_consistency(struct fscache_cookie *, const void *);
-extern void __fscache_update_cookie(struct fscache_cookie *, const void *);
-extern int __fscache_attr_changed(struct fscache_cookie *);
-extern void __fscache_invalidate(struct fscache_cookie *);
-extern void __fscache_wait_on_invalidate(struct fscache_cookie *);
-
-#ifdef FSCACHE_USE_NEW_IO_API
-extern int __fscache_begin_read_operation(struct netfs_read_request *, struct fscache_cookie *);
-#else
-extern int __fscache_read_or_alloc_page(struct fscache_cookie *,
-					struct page *,
-					fscache_rw_complete_t,
-					void *,
-					gfp_t);
-extern int __fscache_read_or_alloc_pages(struct fscache_cookie *,
-					 struct address_space *,
-					 struct list_head *,
-					 unsigned *,
-					 fscache_rw_complete_t,
-					 void *,
-					 gfp_t);
-extern int __fscache_alloc_page(struct fscache_cookie *, struct page *, gfp_t);
-extern int __fscache_write_page(struct fscache_cookie *, struct page *, loff_t, gfp_t);
-extern void __fscache_uncache_page(struct fscache_cookie *, struct page *);
-extern bool __fscache_check_page_write(struct fscache_cookie *, struct page *);
-extern void __fscache_wait_on_page_write(struct fscache_cookie *, struct page *);
-extern bool __fscache_maybe_release_page(struct fscache_cookie *, struct page *,
-					 gfp_t);
-extern void __fscache_uncache_all_inode_pages(struct fscache_cookie *,
-					      struct inode *);
-extern void __fscache_readpages_cancel(struct fscache_cookie *cookie,
-				       struct list_head *pages);
-#endif /* FSCACHE_USE_NEW_IO_API */
-
-extern void __fscache_disable_cookie(struct fscache_cookie *, const void *, bool);
-extern void __fscache_enable_cookie(struct fscache_cookie *, const void *, loff_t,
-				    bool (*)(void *), void *);
+	loff_t);
+extern void __fscache_use_cookie(struct fscache_cookie *, bool);
+extern void __fscache_unuse_cookie(struct fscache_cookie *, const void *, const loff_t *);
+extern void __fscache_relinquish_cookie(struct fscache_cookie *, bool);
+extern void __fscache_resize_cookie(struct fscache_cookie *, loff_t);
+extern void __fscache_invalidate(struct fscache_cookie *, const void *, loff_t, unsigned int);
+extern int __fscache_begin_read_operation(struct netfs_cache_resources *, struct fscache_cookie *);
+extern int __fscache_begin_write_operation(struct netfs_cache_resources *, struct fscache_cookie *);
+
+extern void __fscache_write_to_cache(struct fscache_cookie *, struct address_space *,
+				     loff_t, size_t, loff_t, netfs_io_terminated_t, void *,
+				     bool);
+extern void __fscache_clear_page_bits(struct address_space *, loff_t, size_t);
 
 /**
- * fscache_register_netfs - Register a filesystem as desiring caching services
- * @netfs: The description of the filesystem
+ * fscache_acquire_volume - Register a volume as desiring caching services
+ * @volume_key: An identification string for the volume
+ * @cache_name: The name of the cache to use (or NULL for the default)
+ * @coherency_data: Piece of arbitrary coherency data to check (or NULL)
+ * @coherency_len: The size of the coherency data
  *
- * Register a filesystem as desiring caching services if they're available.
+ * Register a volume as desiring caching services if they're available.  The
+ * caller must provide an identifier for the volume and may also indicate which
+ * cache it should be in.  If a preexisting volume entry is found in the cache,
+ * the coherency data must match otherwise the entry will be invalidated.
  *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
+ * Returns a cookie pointer on success, -ENOMEM if out of memory or -EBUSY if a
+ * cache volume of that name is already acquired.  Note that "NULL" is a valid
+ * cookie pointer and can be returned if caching is refused.
  */
 static inline
-int fscache_register_netfs(struct fscache_netfs *netfs)
+struct fscache_volume *fscache_acquire_volume(const char *volume_key,
+					      const char *cache_name,
+					      const void *coherency_data,
+					      size_t coherency_len)
 {
-	if (fscache_available())
-		return __fscache_register_netfs(netfs);
-	else
-		return 0;
+	if (!fscache_available())
+		return NULL;
+	return __fscache_acquire_volume(volume_key, cache_name,
+					coherency_data, coherency_len);
 }
 
 /**
- * fscache_unregister_netfs - Indicate that a filesystem no longer desires
- * caching services
- * @netfs: The description of the filesystem
+ * fscache_relinquish_volume - Cease caching a volume
+ * @volume: The volume cookie
+ * @coherency_data: Piece of arbitrary coherency data to set (or NULL)
+ * @invalidate: True if the volume should be invalidated
  *
- * Indicate that a filesystem no longer desires caching services for the
- * moment.
- *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
+ * Indicate that a filesystem no longer desires caching services for a volume.
+ * The caller must have relinquished all file cookies prior to calling this.
+ * The stored coherency data is updated.
  */
 static inline
-void fscache_unregister_netfs(struct fscache_netfs *netfs)
+void fscache_relinquish_volume(struct fscache_volume *volume,
+			       const void *coherency_data,
+			       bool invalidate)
 {
-	if (fscache_available())
-		__fscache_unregister_netfs(netfs);
+	if (fscache_volume_valid(volume))
+		__fscache_relinquish_volume(volume, coherency_data, invalidate);
 }
 
 /**
- * fscache_lookup_cache_tag - Look up a cache tag
- * @name: The name of the tag to search for
+ * fscache_acquire_cookie - Acquire a cookie to represent a cache object
+ * @volume: The volume in which to locate/create this cookie
+ * @advice: Advice flags (FSCACHE_COOKIE_ADV_*)
+ * @index_key: The index key for this cookie
+ * @index_key_len: Size of the index key
+ * @aux_data: The auxiliary data for the cookie (may be NULL)
+ * @aux_data_len: Size of the auxiliary data buffer
+ * @object_size: The initial size of object
  *
- * Acquire a specific cache referral tag that can be used to select a specific
- * cache in which to cache an index.
+ * Acquire a cookie to represent a data file within the given cache volume.
  *
  * See Documentation/filesystems/caching/netfs-api.rst for a complete
  * description.
  */
 static inline
-struct fscache_cache_tag *fscache_lookup_cache_tag(const char *name)
+struct fscache_cookie *fscache_acquire_cookie(struct fscache_volume *volume,
+					      u8 advice,
+					      const void *index_key,
+					      size_t index_key_len,
+					      const void *aux_data,
+					      size_t aux_data_len,
+					      loff_t object_size)
 {
-	if (fscache_available())
-		return __fscache_lookup_cache_tag(name);
-	else
+	if (!fscache_volume_valid(volume))
 		return NULL;
+	return __fscache_acquire_cookie(volume, advice,
+					index_key, index_key_len,
+					aux_data, aux_data_len,
+					object_size);
 }
 
 /**
- * fscache_release_cache_tag - Release a cache tag
- * @tag: The tag to release
- *
- * Release a reference to a cache referral tag previously looked up.
+ * fscache_use_cookie - Request usage of cookie attached to an object
+ * @object: Object description
+ * @will_modify: If cache is expected to be modified locally
  *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
+ * Request usage of the cookie attached to an object.  The caller should tell
+ * the cache if the object's contents are about to be modified locally and then
+ * the cache can apply the policy that has been set to handle this case.
  */
-static inline
-void fscache_release_cache_tag(struct fscache_cache_tag *tag)
+static inline void fscache_use_cookie(struct fscache_cookie *cookie,
+				      bool will_modify)
 {
-	if (fscache_available())
-		__fscache_release_cache_tag(tag);
+	if (fscache_cookie_valid(cookie))
+		__fscache_use_cookie(cookie, will_modify);
 }
 
 /**
- * fscache_acquire_cookie - Acquire a cookie to represent a cache object
- * @parent: The cookie that's to be the parent of this one
- * @def: A description of the cache object, including callback operations
- * @index_key: The index key for this cookie
- * @index_key_len: Size of the index key
- * @aux_data: The auxiliary data for the cookie (may be NULL)
- * @aux_data_len: Size of the auxiliary data buffer
- * @netfs_data: An arbitrary piece of data to be kept in the cookie to
- * represent the cache object to the netfs
- * @object_size: The initial size of object
- * @enable: Whether or not to enable a data cookie immediately
+ * fscache_unuse_cookie - Cease usage of cookie attached to an object
+ * @object: Object description
+ * @aux_data: Updated auxiliary data (or NULL)
+ * @object_size: Revised size of the object (or NULL)
  *
- * This function is used to inform FS-Cache about part of an index hierarchy
- * that can be used to locate files.  This is done by requesting a cookie for
- * each index in the path to the file.
- *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
+ * Cease usage of the cookie attached to an object.  When the users count
+ * reaches zero then the cookie relinquishment will be permitted to proceed.
  */
-static inline
-struct fscache_cookie *fscache_acquire_cookie(
-	struct fscache_cookie *parent,
-	const struct fscache_cookie_def *def,
-	const void *index_key,
-	size_t index_key_len,
-	const void *aux_data,
-	size_t aux_data_len,
-	void *netfs_data,
-	loff_t object_size,
-	bool enable)
+static inline void fscache_unuse_cookie(struct fscache_cookie *cookie,
+					const void *aux_data,
+					const loff_t *object_size)
 {
-	if (fscache_cookie_valid(parent) && fscache_cookie_enabled(parent))
-		return __fscache_acquire_cookie(parent, def,
-						index_key, index_key_len,
-						aux_data, aux_data_len,
-						netfs_data, object_size, enable);
-	else
-		return NULL;
+	if (fscache_cookie_valid(cookie))
+		__fscache_unuse_cookie(cookie, aux_data, object_size);
 }
 
 /**
  * fscache_relinquish_cookie - Return the cookie to the cache, maybe discarding
  * it
  * @cookie: The cookie being returned
- * @aux_data: The updated auxiliary data for the cookie (may be NULL)
  * @retire: True if the cache object the cookie represents is to be discarded
  *
  * This function returns a cookie to the cache, forcibly discarding the
- * associated cache object if retire is set to true.  The opportunity is
- * provided to update the auxiliary data in the cache before the object is
- * disconnected.
+ * associated cache object if retire is set to true.
  *
  * See Documentation/filesystems/caching/netfs-api.rst for a complete
  * description.
  */
 static inline
-void fscache_relinquish_cookie(struct fscache_cookie *cookie,
-			       const void *aux_data,
-			       bool retire)
+void fscache_relinquish_cookie(struct fscache_cookie *cookie, bool retire)
 {
 	if (fscache_cookie_valid(cookie))
-		__fscache_relinquish_cookie(cookie, aux_data, retire);
+		__fscache_relinquish_cookie(cookie, retire);
 }
 
-/**
- * fscache_check_consistency - Request validation of a cache's auxiliary data
- * @cookie: The cookie representing the cache object
- * @aux_data: The updated auxiliary data for the cookie (may be NULL)
- *
- * Request an consistency check from fscache, which passes the request to the
- * backing cache.  The auxiliary data on the cookie will be updated first if
- * @aux_data is set.
- *
- * Returns 0 if consistent and -ESTALE if inconsistent.  May also
- * return -ENOMEM and -ERESTARTSYS.
+/*
+ * Find the auxiliary data on a cookie.
  */
-static inline
-int fscache_check_consistency(struct fscache_cookie *cookie,
-			      const void *aux_data)
+static inline void *fscache_get_aux(struct fscache_cookie *cookie)
 {
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		return __fscache_check_consistency(cookie, aux_data);
+	if (cookie->aux_len <= sizeof(cookie->inline_aux))
+		return cookie->inline_aux;
 	else
-		return 0;
+		return cookie->aux;
 }
 
-/**
- * fscache_update_cookie - Request that a cache object be updated
- * @cookie: The cookie representing the cache object
- * @aux_data: The updated auxiliary data for the cookie (may be NULL)
- *
- * Request an update of the index data for the cache object associated with the
- * cookie.  The auxiliary data on the cookie will be updated first if @aux_data
- * is set.
- *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
+/*
+ * Update the auxiliary data on a cookie.
  */
 static inline
-void fscache_update_cookie(struct fscache_cookie *cookie, const void *aux_data)
+void fscache_update_aux(struct fscache_cookie *cookie,
+			const void *aux_data, const loff_t *object_size)
 {
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		__fscache_update_cookie(cookie, aux_data);
+	void *p = fscache_get_aux(cookie);
+
+	if (aux_data && p)
+		memcpy(p, aux_data, cookie->aux_len);
+	if (object_size)
+		cookie->object_size = *object_size;
 }
 
-/**
- * fscache_pin_cookie - Pin a data-storage cache object in its cache
- * @cookie: The cookie representing the cache object
- *
- * Permit data-storage cache objects to be pinned in the cache.
- *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
- */
+#ifdef CONFIG_FSCACHE_STATS
+extern atomic_t fscache_n_updates;
+#endif
+
 static inline
-int fscache_pin_cookie(struct fscache_cookie *cookie)
+void __fscache_update_cookie(struct fscache_cookie *cookie, const void *aux_data,
+			     const loff_t *object_size)
 {
-	return -ENOBUFS;
+#ifdef CONFIG_FSCACHE_STATS
+	atomic_inc(&fscache_n_updates);
+#endif
+	fscache_update_aux(cookie, aux_data, object_size);
+	smp_wmb();
+	set_bit(FSCACHE_COOKIE_NEEDS_UPDATE, &cookie->flags);
 }
 
 /**
- * fscache_pin_cookie - Unpin a data-storage cache object in its cache
+ * fscache_update_cookie - Request that a cache object be updated
  * @cookie: The cookie representing the cache object
+ * @aux_data: The updated auxiliary data for the cookie (may be NULL)
+ * @object_size: The current size of the object (may be NULL)
  *
- * Permit data-storage cache objects to be unpinned from the cache.
+ * Request an update of the index data for the cache object associated with the
+ * cookie.  The auxiliary data on the cookie will be updated first if @aux_data
+ * is set and the object size will be updated and the object possibly trimmed
+ * if @object_size is set.
  *
  * See Documentation/filesystems/caching/netfs-api.rst for a complete
  * description.
  */
 static inline
-void fscache_unpin_cookie(struct fscache_cookie *cookie)
+void fscache_update_cookie(struct fscache_cookie *cookie, const void *aux_data,
+			   const loff_t *object_size)
 {
+	if (fscache_cookie_enabled(cookie))
+		__fscache_update_cookie(cookie, aux_data, object_size);
 }
 
 /**
- * fscache_attr_changed - Notify cache that an object's attributes changed
+ * fscache_resize_cookie - Request that a cache object be resized
  * @cookie: The cookie representing the cache object
+ * @new_size: The new size of the object (may be NULL)
  *
- * Send a notification to the cache indicating that an object's attributes have
- * changed.  This includes the data size.  These attributes will be obtained
- * through the get_attr() cookie definition op.
+ * Request that the size of an object be changed.
  *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
+ * See Documentation/filesystems/caching/netfs-api.txt for a complete
  * description.
  */
 static inline
-int fscache_attr_changed(struct fscache_cookie *cookie)
+void fscache_resize_cookie(struct fscache_cookie *cookie, loff_t new_size)
 {
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		return __fscache_attr_changed(cookie);
-	else
-		return -ENOBUFS;
+	if (fscache_cookie_enabled(cookie))
+		__fscache_resize_cookie(cookie, new_size);
 }
 
 /**
  * fscache_invalidate - Notify cache that an object needs invalidation
  * @cookie: The cookie representing the cache object
+ * @aux_data: The updated auxiliary data for the cookie (may be NULL)
+ * @size: The revised size of the object.
+ * @flags: Invalidation flags (FSCACHE_INVAL_*)
  *
  * Notify the cache that an object is needs to be invalidated and that it
- * should abort any retrievals or stores it is doing on the cache.  The object
- * is then marked non-caching until such time as the invalidation is complete.
- *
- * This can be called with spinlocks held.
- *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
- */
-static inline
-void fscache_invalidate(struct fscache_cookie *cookie)
-{
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		__fscache_invalidate(cookie);
-}
-
-/**
- * fscache_wait_on_invalidate - Wait for invalidation to complete
- * @cookie: The cookie representing the cache object
+ * should abort any retrievals or stores it is doing on the cache.  This
+ * increments inval_counter on the cookie which can be used by the caller to
+ * reconsider I/O requests as they complete.
  *
- * Wait for the invalidation of an object to complete.
+ * If @flags has FSCACHE_INVAL_DIO_WRITE set, this indicates that this is due
+ * to a direct I/O write and will cause caching to be disabled on this cookie
+ * until it is completely unused.
  *
  * See Documentation/filesystems/caching/netfs-api.rst for a complete
  * description.
  */
 static inline
-void fscache_wait_on_invalidate(struct fscache_cookie *cookie)
+void fscache_invalidate(struct fscache_cookie *cookie,
+			const void *aux_data, loff_t size, unsigned int flags)
 {
-	if (fscache_cookie_valid(cookie))
-		__fscache_wait_on_invalidate(cookie);
+	if (fscache_cookie_enabled(cookie))
+		__fscache_invalidate(cookie, aux_data, size, flags);
 }
 
 /**
- * fscache_reserve_space - Reserve data space for a cached object
- * @cookie: The cookie representing the cache object
- * @i_size: The amount of space to be reserved
+ * fscache_operation_valid - Return true if operations resources are usable
+ * @cres: The resources to check.
  *
- * Reserve an amount of space in the cache for the cache object attached to a
- * cookie so that a write to that object within the space can always be
- * honoured.
- *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
+ * Returns a pointer to the operations table if usable or NULL if not.
  */
 static inline
-int fscache_reserve_space(struct fscache_cookie *cookie, loff_t size)
+const struct netfs_cache_ops *fscache_operation_valid(const struct netfs_cache_resources *cres)
 {
-	return -ENOBUFS;
+	return fscache_resources_valid(cres) ? cres->ops : NULL;
 }
 
-#ifdef FSCACHE_USE_NEW_IO_API
-
 /**
  * fscache_begin_read_operation - Begin a read operation for the netfs lib
- * @rreq: The read request being undertaken
+ * @cres: The cache resources for the read being performed
  * @cookie: The cookie representing the cache object
  *
- * Begin a read operation on behalf of the netfs helper library.  @rreq
- * indicates the read request to which the operation state should be attached;
- * @cookie indicates the cache object that will be accessed.
+ * Begin a read operation on behalf of the netfs helper library.  @cres
+ * indicates the cache resources to which the operation state should be
+ * attached; @cookie indicates the cache object that will be accessed.
  *
  * This is intended to be called from the ->begin_cache_operation() netfs lib
  * operation as implemented by the network filesystem.
  *
+ * @cres->inval_counter is set from @cookie->inval_counter for comparison at
+ * the end of the operation.  This allows invalidation during the operation to
+ * be detected by the caller.
+ *
  * Returns:
  * * 0		- Success
  * * -ENOBUFS	- No caching available
  * * Other error code from the cache, such as -ENOMEM.
  */
 static inline
-int fscache_begin_read_operation(struct netfs_read_request *rreq,
+int fscache_begin_read_operation(struct netfs_cache_resources *cres,
 				 struct fscache_cookie *cookie)
 {
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		return __fscache_begin_read_operation(rreq, cookie);
+	if (fscache_cookie_enabled(cookie))
+		return __fscache_begin_read_operation(cres, cookie);
 	return -ENOBUFS;
 }
 
-#else /* FSCACHE_USE_NEW_IO_API */
-
 /**
- * fscache_read_or_alloc_page - Read a page from the cache or allocate a block
- * in which to store it
- * @cookie: The cookie representing the cache object
- * @page: The netfs page to fill if possible
- * @end_io_func: The callback to invoke when and if the page is filled
- * @context: An arbitrary piece of data to pass on to end_io_func()
- * @gfp: The conditions under which memory allocation should be made
- *
- * Read a page from the cache, or if that's not possible make a potential
- * one-block reservation in the cache into which the page may be stored once
- * fetched from the server.
- *
- * If the page is not backed by the cache object, or if it there's some reason
- * it can't be, -ENOBUFS will be returned and nothing more will be done for
- * that page.
- *
- * Else, if that page is backed by the cache, a read will be initiated directly
- * to the netfs's page and 0 will be returned by this function.  The
- * end_io_func() callback will be invoked when the operation terminates on a
- * completion or failure.  Note that the callback may be invoked before the
- * return.
- *
- * Else, if the page is unbacked, -ENODATA is returned and a block may have
- * been allocated in the cache.
+ * fscache_end_operation - End the read operation for the netfs lib
+ * @cres: The cache resources for the read operation
  *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
+ * Clean up the resources at the end of the read request.
  */
-static inline
-int fscache_read_or_alloc_page(struct fscache_cookie *cookie,
-			       struct page *page,
-			       fscache_rw_complete_t end_io_func,
-			       void *context,
-			       gfp_t gfp)
+static inline void fscache_end_operation(struct netfs_cache_resources *cres)
 {
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		return __fscache_read_or_alloc_page(cookie, page, end_io_func,
-						    context, gfp);
-	else
-		return -ENOBUFS;
-}
+	const struct netfs_cache_ops *ops = fscache_operation_valid(cres);
 
-/**
- * fscache_read_or_alloc_pages - Read pages from the cache and/or allocate
- * blocks in which to store them
- * @cookie: The cookie representing the cache object
- * @mapping: The netfs inode mapping to which the pages will be attached
- * @pages: A list of potential netfs pages to be filled
- * @nr_pages: Number of pages to be read and/or allocated
- * @end_io_func: The callback to invoke when and if each page is filled
- * @context: An arbitrary piece of data to pass on to end_io_func()
- * @gfp: The conditions under which memory allocation should be made
- *
- * Read a set of pages from the cache, or if that's not possible, attempt to
- * make a potential one-block reservation for each page in the cache into which
- * that page may be stored once fetched from the server.
- *
- * If some pages are not backed by the cache object, or if it there's some
- * reason they can't be, -ENOBUFS will be returned and nothing more will be
- * done for that pages.
- *
- * Else, if some of the pages are backed by the cache, a read will be initiated
- * directly to the netfs's page and 0 will be returned by this function.  The
- * end_io_func() callback will be invoked when the operation terminates on a
- * completion or failure.  Note that the callback may be invoked before the
- * return.
- *
- * Else, if a page is unbacked, -ENODATA is returned and a block may have
- * been allocated in the cache.
- *
- * Because the function may want to return all of -ENOBUFS, -ENODATA and 0 in
- * regard to different pages, the return values are prioritised in that order.
- * Any pages submitted for reading are removed from the pages list.
- *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
- */
-static inline
-int fscache_read_or_alloc_pages(struct fscache_cookie *cookie,
-				struct address_space *mapping,
-				struct list_head *pages,
-				unsigned *nr_pages,
-				fscache_rw_complete_t end_io_func,
-				void *context,
-				gfp_t gfp)
-{
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		return __fscache_read_or_alloc_pages(cookie, mapping, pages,
-						     nr_pages, end_io_func,
-						     context, gfp);
-	else
-		return -ENOBUFS;
+	if (ops)
+		ops->end_operation(cres);
 }
 
 /**
- * fscache_alloc_page - Allocate a block in which to store a page
- * @cookie: The cookie representing the cache object
- * @page: The netfs page to allocate a page for
- * @gfp: The conditions under which memory allocation should be made
+ * fscache_read - Start a read from the cache.
+ * @cres: The cache resources to use
+ * @start_pos: The beginning file offset in the cache file
+ * @iter: The buffer to fill - and also the length
+ * @read_hole: How to handle a hole in the data.
+ * @term_func: The function to call upon completion
+ * @term_func_priv: The private data for @term_func
  *
- * Request Allocation a block in the cache in which to store a netfs page
- * without retrieving any contents from the cache.
+ * Start a read from the cache.  @cres indicates the cache object to read from
+ * and must be obtained by a call to fscache_begin_operation() beforehand.
  *
- * If the page is not backed by a file then -ENOBUFS will be returned and
- * nothing more will be done, and no reservation will be made.
+ * The data is read into the iterator, @iter, and that also indicates the size
+ * of the operation.  @start_pos is the start position in the file, though if
+ * @seek_data is set appropriately, the cache can use SEEK_DATA to find the
+ * next piece of data, writing zeros for the hole into the iterator.
  *
- * Else, a block will be allocated if one wasn't already, and 0 will be
- * returned
+ * Upon termination of the operation, @term_func will be called and supplied
+ * with @term_func_priv plus the amount of data written, if successful, or the
+ * error code otherwise.
  *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
- */
-static inline
-int fscache_alloc_page(struct fscache_cookie *cookie,
-		       struct page *page,
-		       gfp_t gfp)
-{
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		return __fscache_alloc_page(cookie, page, gfp);
-	else
-		return -ENOBUFS;
-}
-
-/**
- * fscache_readpages_cancel - Cancel read/alloc on pages
- * @cookie: The cookie representing the inode's cache object.
- * @pages: The netfs pages that we canceled write on in readpages()
+ * @read_hole indicates how a partially populated region in the cache should be
+ * handled.  It can be one of a number of settings:
  *
- * Uncache/unreserve the pages reserved earlier in readpages() via
- * fscache_readpages_or_alloc() and similar.  In most successful caches in
- * readpages() this doesn't do anything.  In cases when the underlying netfs's
- * readahead failed we need to clean up the pagelist (unmark and uncache).
+ *	NETFS_READ_HOLE_IGNORE - Just try to read (may return a short read).
  *
- * This function may sleep as it may have to clean up disk state.
+ *	NETFS_READ_HOLE_CLEAR - Seek for data, clearing the part of the buffer
+ *				skipped over, then do as for IGNORE.
+ *
+ *	NETFS_READ_HOLE_FAIL - Give ENODATA if we encounter a hole.
  */
 static inline
-void fscache_readpages_cancel(struct fscache_cookie *cookie,
-			      struct list_head *pages)
+int fscache_read(struct netfs_cache_resources *cres,
+		 loff_t start_pos,
+		 struct iov_iter *iter,
+		 enum netfs_read_from_hole read_hole,
+		 netfs_io_terminated_t term_func,
+		 void *term_func_priv)
 {
-	if (fscache_cookie_valid(cookie))
-		__fscache_readpages_cancel(cookie, pages);
+	const struct netfs_cache_ops *ops = fscache_operation_valid(cres);
+	return ops->read(cres, start_pos, iter, read_hole,
+			 term_func, term_func_priv);
 }
 
 /**
- * fscache_write_page - Request storage of a page in the cache
+ * fscache_begin_write_operation - Begin a write operation for the netfs lib
+ * @cres: The cache resources for the write being performed
  * @cookie: The cookie representing the cache object
- * @page: The netfs page to store
- * @object_size: Updated size of object
- * @gfp: The conditions under which memory allocation should be made
  *
- * Request the contents of the netfs page be written into the cache.  This
- * request may be ignored if no cache block is currently allocated, in which
- * case it will return -ENOBUFS.
+ * Begin a write operation on behalf of the netfs helper library.  @cres
+ * indicates the cache resources to which the operation state should be
+ * attached; @cookie indicates the cache object that will be accessed.
  *
- * If a cache block was already allocated, a write will be initiated and 0 will
- * be returned.  The PG_fscache_write page bit is set immediately and will then
- * be cleared at the completion of the write to indicate the success or failure
- * of the operation.  Note that the completion may happen before the return.
+ * @cres->inval_counter is set from @cookie->inval_counter for comparison at
+ * the end of the operation.  This allows invalidation during the operation to
+ * be detected by the caller.
  *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
+ * Returns:
+ * * 0		- Success
+ * * -ENOBUFS	- No caching available
+ * * Other error code from the cache, such as -ENOMEM.
  */
 static inline
-int fscache_write_page(struct fscache_cookie *cookie,
-		       struct page *page,
-		       loff_t object_size,
-		       gfp_t gfp)
+int fscache_begin_write_operation(struct netfs_cache_resources *cres,
+				  struct fscache_cookie *cookie)
 {
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		return __fscache_write_page(cookie, page, object_size, gfp);
-	else
-		return -ENOBUFS;
+	if (fscache_cookie_enabled(cookie))
+		return __fscache_begin_write_operation(cres, cookie);
+	return -ENOBUFS;
 }
 
 /**
- * fscache_uncache_page - Indicate that caching is no longer required on a page
- * @cookie: The cookie representing the cache object
- * @page: The netfs page that was being cached.
+ * fscache_write - Start a write to the cache.
+ * @cres: The cache resources to use
+ * @start_pos: The beginning file offset in the cache file
+ * @iter: The data to write - and also the length
+ * @term_func: The function to call upon completion
+ * @term_func_priv: The private data for @term_func
  *
- * Tell the cache that we no longer want a page to be cached and that it should
- * remove any knowledge of the netfs page it may have.
+ * Start a write to the cache.  @cres indicates the cache object to write to and
+ * must be obtained by a call to fscache_begin_operation() beforehand.
  *
- * Note that this cannot cancel any outstanding I/O operations between this
- * page and the cache.
+ * The data to be written is obtained from the iterator, @iter, and that also
+ * indicates the size of the operation.  @start_pos is the start position in
+ * the file.
  *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
+ * Upon termination of the operation, @term_func will be called and supplied
+ * with @term_func_priv plus the amount of data written, if successful, or the
+ * error code otherwise.
  */
 static inline
-void fscache_uncache_page(struct fscache_cookie *cookie,
-			  struct page *page)
+int fscache_write(struct netfs_cache_resources *cres,
+		  loff_t start_pos,
+		  struct iov_iter *iter,
+		  netfs_io_terminated_t term_func,
+		  void *term_func_priv)
 {
-	if (fscache_cookie_valid(cookie))
-		__fscache_uncache_page(cookie, page);
+	const struct netfs_cache_ops *ops = fscache_operation_valid(cres);
+	return ops->write(cres, start_pos, iter, term_func, term_func_priv);
 }
 
 /**
- * fscache_check_page_write - Ask if a page is being writing to the cache
- * @cookie: The cookie representing the cache object
- * @page: The netfs page that is being cached.
- *
- * Ask the cache if a page is being written to the cache.
- *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
- */
-static inline
-bool fscache_check_page_write(struct fscache_cookie *cookie,
-			      struct page *page)
+ * fscache_clear_page_bits - Clear the PG_fscache bits from a set of pages
+ * @mapping: The netfs inode to use as the source
+ * @start: The start position in @mapping
+ * @len: The amount of data to unlock
+ * @caching: If PG_fscache has been set
+ *
+ * Clear the PG_fscache flag from a sequence of pages and wake up anyone who's
+ * waiting.
+ */
+static inline void fscache_clear_page_bits(struct address_space *mapping,
+					   loff_t start, size_t len,
+					   bool caching)
 {
-	if (fscache_cookie_valid(cookie))
-		return __fscache_check_page_write(cookie, page);
-	return false;
+	if (caching)
+		__fscache_clear_page_bits(mapping, start, len);
 }
 
 /**
- * fscache_wait_on_page_write - Wait for a page to complete writing to the cache
+ * fscache_write_to_cache - Save a write to the cache and clear PG_fscache
  * @cookie: The cookie representing the cache object
- * @page: The netfs page that is being cached.
- *
- * Ask the cache to wake us up when a page is no longer being written to the
- * cache.
- *
- * See Documentation/filesystems/caching/netfs-api.rst for a complete
- * description.
- */
-static inline
-void fscache_wait_on_page_write(struct fscache_cookie *cookie,
-				struct page *page)
+ * @mapping: The netfs inode to use as the source
+ * @start: The start position in @mapping
+ * @len: The amount of data to write back
+ * @i_size: The new size of the inode
+ * @term_func: The function to call upon completion
+ * @term_func_priv: The private data for @term_func
+ * @caching: If PG_fscache has been set
+ *
+ * Helper function for a netfs to write dirty data from an inode into the cache
+ * object that's backing it.
+ *
+ * @start and @len describe the range of the data.  This does not need to be
+ * page-aligned, but to satisfy DIO requirements, the cache may expand it up to
+ * the page boundaries on either end.  All the pages covering the range must be
+ * marked with PG_fscache.
+ *
+ * If given, @term_func will be called upon completion and supplied with
+ * @term_func_priv.  Note that the PG_fscache flags will have been cleared by
+ * this point, so the netfs must retain its own pin on the mapping.
+ */
+static inline void fscache_write_to_cache(struct fscache_cookie *cookie,
+					  struct address_space *mapping,
+					  loff_t start, size_t len, loff_t i_size,
+					  netfs_io_terminated_t term_func,
+					  void *term_func_priv,
+					  bool caching)
 {
-	if (fscache_cookie_valid(cookie))
-		__fscache_wait_on_page_write(cookie, page);
-}
+	if (caching)
+		__fscache_write_to_cache(cookie, mapping, start, len, i_size,
+					 term_func, term_func_priv, caching);
+	else if (term_func)
+		term_func(term_func_priv, -ENOBUFS, false);
 
-/**
- * fscache_maybe_release_page - Consider releasing a page, cancelling a store
- * @cookie: The cookie representing the cache object
- * @page: The netfs page that is being cached.
- * @gfp: The gfp flags passed to releasepage()
- *
- * Consider releasing a page for the vmscan algorithm, on behalf of the netfs's
- * releasepage() call.  A storage request on the page may cancelled if it is
- * not currently being processed.
- *
- * The function returns true if the page no longer has a storage request on it,
- * and false if a storage request is left in place.  If true is returned, the
- * page will have been passed to fscache_uncache_page().  If false is returned
- * the page cannot be freed yet.
- */
-static inline
-bool fscache_maybe_release_page(struct fscache_cookie *cookie,
-				struct page *page,
-				gfp_t gfp)
-{
-	if (fscache_cookie_valid(cookie) && PageFsCache(page))
-		return __fscache_maybe_release_page(cookie, page, gfp);
-	return true;
 }
 
+#if __fscache_available
+bool fscache_dirty_folio(struct address_space *mapping, struct folio *folio,
+		struct fscache_cookie *cookie);
+#else
+#define fscache_dirty_folio(MAPPING, FOLIO, COOKIE) \
+		filemap_dirty_folio(MAPPING, FOLIO)
+#endif
+
 /**
- * fscache_uncache_all_inode_pages - Uncache all an inode's pages
- * @cookie: The cookie representing the inode's cache object.
- * @inode: The inode to uncache pages from.
- *
- * Uncache all the pages in an inode that are marked PG_fscache, assuming them
- * to be associated with the given cookie.
+ * fscache_unpin_writeback - Unpin writeback resources
+ * @wbc: The writeback control
+ * @cookie: The cookie referring to the cache object
  *
- * This function may sleep.  It will wait for pages that are being written out
- * and will wait whilst the PG_fscache mark is removed by the cache.
+ * Unpin the writeback resources pinned by fscache_dirty_folio().  This is
+ * intended to be called by the netfs's ->write_inode() method.
  */
-static inline
-void fscache_uncache_all_inode_pages(struct fscache_cookie *cookie,
-				     struct inode *inode)
+static inline void fscache_unpin_writeback(struct writeback_control *wbc,
+					   struct fscache_cookie *cookie)
 {
-	if (fscache_cookie_valid(cookie))
-		__fscache_uncache_all_inode_pages(cookie, inode);
+	if (wbc->unpinned_fscache_wb)
+		fscache_unuse_cookie(cookie, NULL, NULL);
 }
 
-#endif /* FSCACHE_USE_NEW_IO_API */
-
 /**
- * fscache_disable_cookie - Disable a cookie
- * @cookie: The cookie representing the cache object
- * @aux_data: The updated auxiliary data for the cookie (may be NULL)
- * @invalidate: Invalidate the backing object
- *
- * Disable a cookie from accepting further alloc, read, write, invalidate,
- * update or acquire operations.  Outstanding operations can still be waited
- * upon and pages can still be uncached and the cookie relinquished.
- *
- * This will not return until all outstanding operations have completed.
+ * fscache_clear_inode_writeback - Clear writeback resources pinned by an inode
+ * @cookie: The cookie referring to the cache object
+ * @inode: The inode to clean up
+ * @aux: Auxiliary data to apply to the inode
  *
- * If @invalidate is set, then the backing object will be invalidated and
- * detached, otherwise it will just be detached.
- *
- * If @aux_data is set, then auxiliary data will be updated from that.
+ * Clear any writeback resources held by an inode when the inode is evicted.
+ * This must be called before clear_inode() is called.
  */
-static inline
-void fscache_disable_cookie(struct fscache_cookie *cookie,
-			    const void *aux_data,
-			    bool invalidate)
+static inline void fscache_clear_inode_writeback(struct fscache_cookie *cookie,
+						 struct inode *inode,
+						 const void *aux)
 {
-	if (fscache_cookie_valid(cookie) && fscache_cookie_enabled(cookie))
-		__fscache_disable_cookie(cookie, aux_data, invalidate);
+	if (inode->i_state & I_PINNING_FSCACHE_WB) {
+		loff_t i_size = i_size_read(inode);
+		fscache_unuse_cookie(cookie, aux, &i_size);
+	}
 }
 
 /**
- * fscache_enable_cookie - Reenable a cookie
- * @cookie: The cookie representing the cache object
- * @aux_data: The updated auxiliary data for the cookie (may be NULL)
- * @object_size: Current size of object
- * @can_enable: A function to permit enablement once lock is held
- * @data: Data for can_enable()
- *
- * Reenable a previously disabled cookie, allowing it to accept further alloc,
- * read, write, invalidate, update or acquire operations.  An attempt will be
- * made to immediately reattach the cookie to a backing object.  If @aux_data
- * is set, the auxiliary data attached to the cookie will be updated.
+ * fscache_note_page_release - Note that a netfs page got released
+ * @cookie: The cookie corresponding to the file
  *
- * The can_enable() function is called (if not NULL) once the enablement lock
- * is held to rule on whether enablement is still permitted to go ahead.
+ * Note that a page that has been copied to the cache has been released.  This
+ * means that future reads will need to look in the cache to see if it's there.
  */
 static inline
-void fscache_enable_cookie(struct fscache_cookie *cookie,
-			   const void *aux_data,
-			   loff_t object_size,
-			   bool (*can_enable)(void *data),
-			   void *data)
+void fscache_note_page_release(struct fscache_cookie *cookie)
 {
-	if (fscache_cookie_valid(cookie) && !fscache_cookie_enabled(cookie))
-		__fscache_enable_cookie(cookie, aux_data, object_size,
-					can_enable, data);
+	/* If we've written data to the cache (HAVE_DATA) and there wasn't any
+	 * data in the cache when we started (NO_DATA_TO_READ), it may no
+	 * longer be true that we can skip reading from the cache - so clear
+	 * the flag that causes reads to be skipped.
+	 */
+	if (cookie &&
+	    test_bit(FSCACHE_COOKIE_HAVE_DATA, &cookie->flags) &&
+	    test_bit(FSCACHE_COOKIE_NO_DATA_TO_READ, &cookie->flags))
+		clear_bit(FSCACHE_COOKIE_NO_DATA_TO_READ, &cookie->flags);
 }
 
 #endif /* _LINUX_FSCACHE_H */
diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h
index e912ed9141d9..50d92d805bd8 100644
--- a/include/linux/fscrypt.h
+++ b/include/linux/fscrypt.h
@@ -118,9 +118,6 @@ struct fscrypt_operations {
 	 */
 	bool (*empty_dir)(struct inode *inode);
 
-	/* The filesystem's maximum ciphertext filename length, in bytes */
-	unsigned int max_namelen;
-
 	/*
 	 * Check whether the filesystem's inode numbers and UUID are stable,
 	 * meaning that they will never be changed even by offline operations
@@ -717,6 +714,10 @@ bool fscrypt_mergeable_bio(struct bio *bio, const struct inode *inode,
 bool fscrypt_mergeable_bio_bh(struct bio *bio,
 			      const struct buffer_head *next_bh);
 
+bool fscrypt_dio_supported(struct kiocb *iocb, struct iov_iter *iter);
+
+u64 fscrypt_limit_io_blocks(const struct inode *inode, u64 lblk, u64 nr_blocks);
+
 #else /* CONFIG_FS_ENCRYPTION_INLINE_CRYPT */
 
 static inline bool __fscrypt_inode_uses_inline_crypto(const struct inode *inode)
@@ -745,6 +746,20 @@ static inline bool fscrypt_mergeable_bio_bh(struct bio *bio,
 {
 	return true;
 }
+
+static inline bool fscrypt_dio_supported(struct kiocb *iocb,
+					 struct iov_iter *iter)
+{
+	const struct inode *inode = file_inode(iocb->ki_filp);
+
+	return !fscrypt_needs_contents_encryption(inode);
+}
+
+static inline u64 fscrypt_limit_io_blocks(const struct inode *inode, u64 lblk,
+					  u64 nr_blocks)
+{
+	return nr_blocks;
+}
 #endif /* !CONFIG_FS_ENCRYPTION_INLINE_CRYPT */
 
 /**
diff --git a/include/linux/fsi-occ.h b/include/linux/fsi-occ.h
index d4cdc2aa6e33..7ee3dbd7f4b3 100644
--- a/include/linux/fsi-occ.h
+++ b/include/linux/fsi-occ.h
@@ -19,6 +19,8 @@ struct device;
 #define OCC_RESP_CRIT_OCB		0xE3
 #define OCC_RESP_CRIT_HW		0xE4
 
+#define OCC_MAX_RESP_WORDS		2048
+
 int fsi_occ_submit(struct device *dev, const void *request, size_t req_len,
 		   void *response, size_t *resp_len);
 
diff --git a/include/linux/fsl/mc.h b/include/linux/fsl/mc.h
index 30ece3ae6df7..7b6c42bfb660 100644
--- a/include/linux/fsl/mc.h
+++ b/include/linux/fsl/mc.h
@@ -91,13 +91,13 @@ struct fsl_mc_resource {
 
 /**
  * struct fsl_mc_device_irq - MC object device message-based interrupt
- * @msi_desc: pointer to MSI descriptor allocated by fsl_mc_msi_alloc_descs()
+ * @virq: Linux virtual interrupt number
  * @mc_dev: MC object device that owns this interrupt
  * @dev_irq_index: device-relative IRQ index
  * @resource: MC generic resource associated with the interrupt
  */
 struct fsl_mc_device_irq {
-	struct msi_desc *msi_desc;
+	unsigned int virq;
 	struct fsl_mc_device *mc_dev;
 	u8 dev_irq_index;
 	struct fsl_mc_resource resource;
@@ -620,6 +620,20 @@ int dpcon_reset(struct fsl_mc_io *mc_io,
 		u32 cmd_flags,
 		u16 token);
 
+int fsl_mc_obj_open(struct fsl_mc_io *mc_io,
+		    u32 cmd_flags,
+		    int obj_id,
+		    char *obj_type,
+		    u16 *token);
+
+int fsl_mc_obj_close(struct fsl_mc_io *mc_io,
+		     u32 cmd_flags,
+		     u16 token);
+
+int fsl_mc_obj_reset(struct fsl_mc_io *mc_io,
+		     u32 cmd_flags,
+		     u16 token);
+
 /**
  * struct dpcon_attr - Structure representing DPCON attributes
  * @id: DPCON object ID
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index 12d3a7d308ab..bb8467cd11ae 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -26,20 +26,20 @@
  * FS_EVENT_ON_CHILD mask on the parent inode and will not be reported if only
  * the child is interested and not the parent.
  */
-static inline void fsnotify_name(struct inode *dir, __u32 mask,
-				 struct inode *child,
-				 const struct qstr *name, u32 cookie)
+static inline int fsnotify_name(__u32 mask, const void *data, int data_type,
+				struct inode *dir, const struct qstr *name,
+				u32 cookie)
 {
 	if (atomic_long_read(&dir->i_sb->s_fsnotify_connectors) == 0)
-		return;
+		return 0;
 
-	fsnotify(mask, child, FSNOTIFY_EVENT_INODE, dir, name, NULL, cookie);
+	return fsnotify(mask, data, data_type, dir, name, NULL, cookie);
 }
 
 static inline void fsnotify_dirent(struct inode *dir, struct dentry *dentry,
 				   __u32 mask)
 {
-	fsnotify_name(dir, mask, d_inode(dentry), &dentry->d_name, 0);
+	fsnotify_name(mask, dentry, FSNOTIFY_EVENT_DENTRY, dir, &dentry->d_name, 0);
 }
 
 static inline void fsnotify_inode(struct inode *inode, __u32 mask)
@@ -86,7 +86,7 @@ notify_child:
  */
 static inline void fsnotify_dentry(struct dentry *dentry, __u32 mask)
 {
-	fsnotify_parent(dentry, mask, d_inode(dentry), FSNOTIFY_EVENT_INODE);
+	fsnotify_parent(dentry, mask, dentry, FSNOTIFY_EVENT_DENTRY);
 }
 
 static inline int fsnotify_file(struct file *file, __u32 mask)
@@ -144,18 +144,23 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
 	u32 fs_cookie = fsnotify_get_cookie();
 	__u32 old_dir_mask = FS_MOVED_FROM;
 	__u32 new_dir_mask = FS_MOVED_TO;
+	__u32 rename_mask = FS_RENAME;
 	const struct qstr *new_name = &moved->d_name;
 
-	if (old_dir == new_dir)
-		old_dir_mask |= FS_DN_RENAME;
-
 	if (isdir) {
 		old_dir_mask |= FS_ISDIR;
 		new_dir_mask |= FS_ISDIR;
+		rename_mask |= FS_ISDIR;
 	}
 
-	fsnotify_name(old_dir, old_dir_mask, source, old_name, fs_cookie);
-	fsnotify_name(new_dir, new_dir_mask, source, new_name, fs_cookie);
+	/* Event with information about both old and new parent+name */
+	fsnotify_name(rename_mask, moved, FSNOTIFY_EVENT_DENTRY,
+		      old_dir, old_name, 0);
+
+	fsnotify_name(old_dir_mask, source, FSNOTIFY_EVENT_INODE,
+		      old_dir, old_name, fs_cookie);
+	fsnotify_name(new_dir_mask, source, FSNOTIFY_EVENT_INODE,
+		      new_dir, new_name, fs_cookie);
 
 	if (target)
 		fsnotify_link_count(target);
@@ -190,16 +195,22 @@ static inline void fsnotify_inoderemove(struct inode *inode)
 
 /*
  * fsnotify_create - 'name' was linked in
+ *
+ * Caller must make sure that dentry->d_name is stable.
+ * Note: some filesystems (e.g. kernfs) leave @dentry negative and instantiate
+ * ->d_inode later
  */
-static inline void fsnotify_create(struct inode *inode, struct dentry *dentry)
+static inline void fsnotify_create(struct inode *dir, struct dentry *dentry)
 {
-	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
+	audit_inode_child(dir, dentry, AUDIT_TYPE_CHILD_CREATE);
 
-	fsnotify_dirent(inode, dentry, FS_CREATE);
+	fsnotify_dirent(dir, dentry, FS_CREATE);
 }
 
 /*
  * fsnotify_link - new hardlink in 'inode' directory
+ *
+ * Caller must make sure that new_dentry->d_name is stable.
  * Note: We have to pass also the linked inode ptr as some filesystems leave
  *   new_dentry->d_inode NULL and instantiate inode pointer later
  */
@@ -209,7 +220,45 @@ static inline void fsnotify_link(struct inode *dir, struct inode *inode,
 	fsnotify_link_count(inode);
 	audit_inode_child(dir, new_dentry, AUDIT_TYPE_CHILD_CREATE);
 
-	fsnotify_name(dir, FS_CREATE, inode, &new_dentry->d_name, 0);
+	fsnotify_name(FS_CREATE, inode, FSNOTIFY_EVENT_INODE,
+		      dir, &new_dentry->d_name, 0);
+}
+
+/*
+ * fsnotify_delete - @dentry was unlinked and unhashed
+ *
+ * Caller must make sure that dentry->d_name is stable.
+ *
+ * Note: unlike fsnotify_unlink(), we have to pass also the unlinked inode
+ * as this may be called after d_delete() and old_dentry may be negative.
+ */
+static inline void fsnotify_delete(struct inode *dir, struct inode *inode,
+				   struct dentry *dentry)
+{
+	__u32 mask = FS_DELETE;
+
+	if (S_ISDIR(inode->i_mode))
+		mask |= FS_ISDIR;
+
+	fsnotify_name(mask, inode, FSNOTIFY_EVENT_INODE, dir, &dentry->d_name,
+		      0);
+}
+
+/**
+ * d_delete_notify - delete a dentry and call fsnotify_delete()
+ * @dentry: The dentry to delete
+ *
+ * This helper is used to guaranty that the unlinked inode cannot be found
+ * by lookup of this name after fsnotify_delete() event has been delivered.
+ */
+static inline void d_delete_notify(struct inode *dir, struct dentry *dentry)
+{
+	struct inode *inode = d_inode(dentry);
+
+	ihold(inode);
+	d_delete(dentry);
+	fsnotify_delete(dir, inode, dentry);
+	iput(inode);
 }
 
 /*
@@ -219,20 +268,24 @@ static inline void fsnotify_link(struct inode *dir, struct inode *inode,
  */
 static inline void fsnotify_unlink(struct inode *dir, struct dentry *dentry)
 {
-	/* Expected to be called before d_delete() */
-	WARN_ON_ONCE(d_is_negative(dentry));
+	if (WARN_ON_ONCE(d_is_negative(dentry)))
+		return;
 
-	fsnotify_dirent(dir, dentry, FS_DELETE);
+	fsnotify_delete(dir, d_inode(dentry), dentry);
 }
 
 /*
  * fsnotify_mkdir - directory 'name' was created
+ *
+ * Caller must make sure that dentry->d_name is stable.
+ * Note: some filesystems (e.g. kernfs) leave @dentry negative and instantiate
+ * ->d_inode later
  */
-static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
+static inline void fsnotify_mkdir(struct inode *dir, struct dentry *dentry)
 {
-	audit_inode_child(inode, dentry, AUDIT_TYPE_CHILD_CREATE);
+	audit_inode_child(dir, dentry, AUDIT_TYPE_CHILD_CREATE);
 
-	fsnotify_dirent(inode, dentry, FS_CREATE | FS_ISDIR);
+	fsnotify_dirent(dir, dentry, FS_CREATE | FS_ISDIR);
 }
 
 /*
@@ -242,10 +295,10 @@ static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
  */
 static inline void fsnotify_rmdir(struct inode *dir, struct dentry *dentry)
 {
-	/* Expected to be called before d_delete() */
-	WARN_ON_ONCE(d_is_negative(dentry));
+	if (WARN_ON_ONCE(d_is_negative(dentry)))
+		return;
 
-	fsnotify_dirent(dir, dentry, FS_DELETE | FS_ISDIR);
+	fsnotify_delete(dir, d_inode(dentry), dentry);
 }
 
 /*
@@ -326,4 +379,17 @@ static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
 		fsnotify_dentry(dentry, mask);
 }
 
+static inline int fsnotify_sb_error(struct super_block *sb, struct inode *inode,
+				    int error)
+{
+	struct fs_error_report report = {
+		.error = error,
+		.inode = inode,
+		.sb = sb,
+	};
+
+	return fsnotify(FS_ERROR, &report, FSNOTIFY_EVENT_ERROR,
+			NULL, NULL, NULL, 0);
+}
+
 #endif	/* _LINUX_FS_NOTIFY_H */
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 1ce66748a2d2..0805b74cae44 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -19,6 +19,7 @@
 #include <linux/atomic.h>
 #include <linux/user_namespace.h>
 #include <linux/refcount.h>
+#include <linux/mempool.h>
 
 /*
  * IN_* from inotfy.h lines up EXACTLY with FS_*, this is so we can easily
@@ -42,6 +43,12 @@
 
 #define FS_UNMOUNT		0x00002000	/* inode on umount fs */
 #define FS_Q_OVERFLOW		0x00004000	/* Event queued overflowed */
+#define FS_ERROR		0x00008000	/* Filesystem Error (fanotify) */
+
+/*
+ * FS_IN_IGNORED overloads FS_ERROR.  It is only used internally by inotify
+ * which does not support FS_ERROR.
+ */
 #define FS_IN_IGNORED		0x00008000	/* last inotify event here */
 
 #define FS_OPEN_PERM		0x00010000	/* open event in an permission hook */
@@ -56,7 +63,7 @@
  */
 #define FS_EVENT_ON_CHILD	0x08000000
 
-#define FS_DN_RENAME		0x10000000	/* file renamed */
+#define FS_RENAME		0x10000000	/* File was renamed */
 #define FS_DN_MULTISHOT		0x20000000	/* dnotify multishot */
 #define FS_ISDIR		0x40000000	/* event occurred against dir */
 #define FS_IN_ONESHOT		0x80000000	/* only send event once */
@@ -69,7 +76,7 @@
  * The watching parent may get an FS_ATTRIB|FS_EVENT_ON_CHILD event
  * when a directory entry inside a child subdir changes.
  */
-#define ALL_FSNOTIFY_DIRENT_EVENTS	(FS_CREATE | FS_DELETE | FS_MOVE)
+#define ALL_FSNOTIFY_DIRENT_EVENTS (FS_CREATE | FS_DELETE | FS_MOVE | FS_RENAME)
 
 #define ALL_FSNOTIFY_PERM_EVENTS (FS_OPEN_PERM | FS_ACCESS_PERM | \
 				  FS_OPEN_EXEC_PERM)
@@ -94,8 +101,9 @@
 /* Events that can be reported to backends */
 #define ALL_FSNOTIFY_EVENTS (ALL_FSNOTIFY_DIRENT_EVENTS | \
 			     FS_EVENTS_POSS_ON_CHILD | \
-			     FS_DELETE_SELF | FS_MOVE_SELF | FS_DN_RENAME | \
-			     FS_UNMOUNT | FS_Q_OVERFLOW | FS_IN_IGNORED)
+			     FS_DELETE_SELF | FS_MOVE_SELF | \
+			     FS_UNMOUNT | FS_Q_OVERFLOW | FS_IN_IGNORED | \
+			     FS_ERROR)
 
 /* Extra flags that may be reported with event or control handling of events */
 #define ALL_FSNOTIFY_FLAGS  (FS_EXCL_UNLINK | FS_ISDIR | FS_IN_ONESHOT | \
@@ -136,6 +144,7 @@ struct mem_cgroup;
  * @dir:	optional directory associated with event -
  *		if @file_name is not NULL, this is the directory that
  *		@file_name is relative to.
+ *		Either @inode or @dir must be non-NULL.
  * @file_name:	optional file name associated with event
  * @cookie:	inotify rename cookie
  *
@@ -155,7 +164,7 @@ struct fsnotify_ops {
 			    const struct qstr *file_name, u32 cookie);
 	void (*free_group_priv)(struct fsnotify_group *group);
 	void (*freeing_mark)(struct fsnotify_mark *mark, struct fsnotify_group *group);
-	void (*free_event)(struct fsnotify_event *event);
+	void (*free_event)(struct fsnotify_group *group, struct fsnotify_event *event);
 	/* called on final put+free to free memory */
 	void (*free_mark)(struct fsnotify_mark *mark);
 };
@@ -238,6 +247,7 @@ struct fsnotify_group {
 			int flags;           /* flags from fanotify_init() */
 			int f_flags; /* event_f_flags from fanotify_init() */
 			struct ucounts *ucounts;
+			mempool_t error_events_pool;
 		} fanotify_data;
 #endif /* CONFIG_FANOTIFY */
 	};
@@ -248,6 +258,14 @@ enum fsnotify_data_type {
 	FSNOTIFY_EVENT_NONE,
 	FSNOTIFY_EVENT_PATH,
 	FSNOTIFY_EVENT_INODE,
+	FSNOTIFY_EVENT_DENTRY,
+	FSNOTIFY_EVENT_ERROR,
+};
+
+struct fs_error_report {
+	int error;
+	struct inode *inode;
+	struct super_block *sb;
 };
 
 static inline struct inode *fsnotify_data_inode(const void *data, int data_type)
@@ -255,8 +273,25 @@ static inline struct inode *fsnotify_data_inode(const void *data, int data_type)
 	switch (data_type) {
 	case FSNOTIFY_EVENT_INODE:
 		return (struct inode *)data;
+	case FSNOTIFY_EVENT_DENTRY:
+		return d_inode(data);
 	case FSNOTIFY_EVENT_PATH:
 		return d_inode(((const struct path *)data)->dentry);
+	case FSNOTIFY_EVENT_ERROR:
+		return ((struct fs_error_report *)data)->inode;
+	default:
+		return NULL;
+	}
+}
+
+static inline struct dentry *fsnotify_data_dentry(const void *data, int data_type)
+{
+	switch (data_type) {
+	case FSNOTIFY_EVENT_DENTRY:
+		/* Non const is needed for dget() */
+		return (struct dentry *)data;
+	case FSNOTIFY_EVENT_PATH:
+		return ((const struct path *)data)->dentry;
 	default:
 		return NULL;
 	}
@@ -273,58 +308,98 @@ static inline const struct path *fsnotify_data_path(const void *data,
 	}
 }
 
+static inline struct super_block *fsnotify_data_sb(const void *data,
+						   int data_type)
+{
+	switch (data_type) {
+	case FSNOTIFY_EVENT_INODE:
+		return ((struct inode *)data)->i_sb;
+	case FSNOTIFY_EVENT_DENTRY:
+		return ((struct dentry *)data)->d_sb;
+	case FSNOTIFY_EVENT_PATH:
+		return ((const struct path *)data)->dentry->d_sb;
+	case FSNOTIFY_EVENT_ERROR:
+		return ((struct fs_error_report *) data)->sb;
+	default:
+		return NULL;
+	}
+}
+
+static inline struct fs_error_report *fsnotify_data_error_report(
+							const void *data,
+							int data_type)
+{
+	switch (data_type) {
+	case FSNOTIFY_EVENT_ERROR:
+		return (struct fs_error_report *) data;
+	default:
+		return NULL;
+	}
+}
+
+/*
+ * Index to merged marks iterator array that correlates to a type of watch.
+ * The type of watched object can be deduced from the iterator type, but not
+ * the other way around, because an event can match different watched objects
+ * of the same object type.
+ * For example, both parent and child are watching an object of type inode.
+ */
+enum fsnotify_iter_type {
+	FSNOTIFY_ITER_TYPE_INODE,
+	FSNOTIFY_ITER_TYPE_VFSMOUNT,
+	FSNOTIFY_ITER_TYPE_SB,
+	FSNOTIFY_ITER_TYPE_PARENT,
+	FSNOTIFY_ITER_TYPE_INODE2,
+	FSNOTIFY_ITER_TYPE_COUNT
+};
+
+/* The type of object that a mark is attached to */
 enum fsnotify_obj_type {
+	FSNOTIFY_OBJ_TYPE_ANY = -1,
 	FSNOTIFY_OBJ_TYPE_INODE,
-	FSNOTIFY_OBJ_TYPE_PARENT,
 	FSNOTIFY_OBJ_TYPE_VFSMOUNT,
 	FSNOTIFY_OBJ_TYPE_SB,
 	FSNOTIFY_OBJ_TYPE_COUNT,
 	FSNOTIFY_OBJ_TYPE_DETACHED = FSNOTIFY_OBJ_TYPE_COUNT
 };
 
-#define FSNOTIFY_OBJ_TYPE_INODE_FL	(1U << FSNOTIFY_OBJ_TYPE_INODE)
-#define FSNOTIFY_OBJ_TYPE_PARENT_FL	(1U << FSNOTIFY_OBJ_TYPE_PARENT)
-#define FSNOTIFY_OBJ_TYPE_VFSMOUNT_FL	(1U << FSNOTIFY_OBJ_TYPE_VFSMOUNT)
-#define FSNOTIFY_OBJ_TYPE_SB_FL		(1U << FSNOTIFY_OBJ_TYPE_SB)
-#define FSNOTIFY_OBJ_ALL_TYPES_MASK	((1U << FSNOTIFY_OBJ_TYPE_COUNT) - 1)
-
-static inline bool fsnotify_valid_obj_type(unsigned int type)
+static inline bool fsnotify_valid_obj_type(unsigned int obj_type)
 {
-	return (type < FSNOTIFY_OBJ_TYPE_COUNT);
+	return (obj_type < FSNOTIFY_OBJ_TYPE_COUNT);
 }
 
 struct fsnotify_iter_info {
-	struct fsnotify_mark *marks[FSNOTIFY_OBJ_TYPE_COUNT];
+	struct fsnotify_mark *marks[FSNOTIFY_ITER_TYPE_COUNT];
 	unsigned int report_mask;
 	int srcu_idx;
 };
 
 static inline bool fsnotify_iter_should_report_type(
-		struct fsnotify_iter_info *iter_info, int type)
+		struct fsnotify_iter_info *iter_info, int iter_type)
 {
-	return (iter_info->report_mask & (1U << type));
+	return (iter_info->report_mask & (1U << iter_type));
 }
 
 static inline void fsnotify_iter_set_report_type(
-		struct fsnotify_iter_info *iter_info, int type)
+		struct fsnotify_iter_info *iter_info, int iter_type)
 {
-	iter_info->report_mask |= (1U << type);
+	iter_info->report_mask |= (1U << iter_type);
 }
 
 static inline void fsnotify_iter_set_report_type_mark(
-		struct fsnotify_iter_info *iter_info, int type,
+		struct fsnotify_iter_info *iter_info, int iter_type,
 		struct fsnotify_mark *mark)
 {
-	iter_info->marks[type] = mark;
-	iter_info->report_mask |= (1U << type);
+	iter_info->marks[iter_type] = mark;
+	iter_info->report_mask |= (1U << iter_type);
 }
 
 #define FSNOTIFY_ITER_FUNCS(name, NAME) \
 static inline struct fsnotify_mark *fsnotify_iter_##name##_mark( \
 		struct fsnotify_iter_info *iter_info) \
 { \
-	return (iter_info->report_mask & FSNOTIFY_OBJ_TYPE_##NAME##_FL) ? \
-		iter_info->marks[FSNOTIFY_OBJ_TYPE_##NAME] : NULL; \
+	return (iter_info->report_mask & (1U << FSNOTIFY_ITER_TYPE_##NAME)) ? \
+		iter_info->marks[FSNOTIFY_ITER_TYPE_##NAME] : NULL; \
 }
 
 FSNOTIFY_ITER_FUNCS(inode, INODE)
@@ -332,8 +407,8 @@ FSNOTIFY_ITER_FUNCS(parent, PARENT)
 FSNOTIFY_ITER_FUNCS(vfsmount, VFSMOUNT)
 FSNOTIFY_ITER_FUNCS(sb, SB)
 
-#define fsnotify_foreach_obj_type(type) \
-	for (type = 0; type < FSNOTIFY_OBJ_TYPE_COUNT; type++)
+#define fsnotify_foreach_iter_type(type) \
+	for (type = 0; type < FSNOTIFY_ITER_TYPE_COUNT; type++)
 
 /*
  * fsnotify_connp_t is what we embed in objects which connector can be attached
@@ -482,16 +557,30 @@ extern int fsnotify_fasync(int fd, struct file *file, int on);
 extern void fsnotify_destroy_event(struct fsnotify_group *group,
 				   struct fsnotify_event *event);
 /* attach the event to the group notification queue */
-extern int fsnotify_add_event(struct fsnotify_group *group,
-			      struct fsnotify_event *event,
-			      int (*merge)(struct fsnotify_group *,
-					   struct fsnotify_event *),
-			      void (*insert)(struct fsnotify_group *,
-					     struct fsnotify_event *));
+extern int fsnotify_insert_event(struct fsnotify_group *group,
+				 struct fsnotify_event *event,
+				 int (*merge)(struct fsnotify_group *,
+					      struct fsnotify_event *),
+				 void (*insert)(struct fsnotify_group *,
+						struct fsnotify_event *));
+
+static inline int fsnotify_add_event(struct fsnotify_group *group,
+				     struct fsnotify_event *event,
+				     int (*merge)(struct fsnotify_group *,
+						  struct fsnotify_event *))
+{
+	return fsnotify_insert_event(group, event, merge, NULL);
+}
+
 /* Queue overflow event to a notification group */
 static inline void fsnotify_queue_overflow(struct fsnotify_group *group)
 {
-	fsnotify_add_event(group, group->overflow_event, NULL, NULL);
+	fsnotify_add_event(group, group->overflow_event, NULL);
+}
+
+static inline bool fsnotify_is_overflow_event(u32 mask)
+{
+	return mask & FS_Q_OVERFLOW;
 }
 
 static inline bool fsnotify_notify_queue_is_empty(struct fsnotify_group *group)
@@ -512,6 +601,25 @@ extern void fsnotify_remove_queued_event(struct fsnotify_group *group,
 
 /* functions used to manipulate the marks attached to inodes */
 
+/* Get mask for calculating object interest taking ignored mask into account */
+static inline __u32 fsnotify_calc_mask(struct fsnotify_mark *mark)
+{
+	__u32 mask = mark->mask;
+
+	if (!mark->ignored_mask)
+		return mask;
+
+	/* Interest in FS_MODIFY may be needed for clearing ignored mask */
+	if (!(mark->flags & FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY))
+		mask |= FS_MODIFY;
+
+	/*
+	 * If mark is interested in ignoring events on children, the object must
+	 * show interest in those events for fsnotify_parent() to notice it.
+	 */
+	return mask | (mark->ignored_mask & ALL_FSNOTIFY_EVENTS);
+}
+
 /* Get mask of events for a list of marks */
 extern __u32 fsnotify_conn_mask(struct fsnotify_mark_connector *conn);
 /* Calculate mask of events for a list of marks */
@@ -526,11 +634,11 @@ extern int fsnotify_get_conn_fsid(const struct fsnotify_mark_connector *conn,
 				  __kernel_fsid_t *fsid);
 /* attach the mark to the object */
 extern int fsnotify_add_mark(struct fsnotify_mark *mark,
-			     fsnotify_connp_t *connp, unsigned int type,
+			     fsnotify_connp_t *connp, unsigned int obj_type,
 			     int allow_dups, __kernel_fsid_t *fsid);
 extern int fsnotify_add_mark_locked(struct fsnotify_mark *mark,
 				    fsnotify_connp_t *connp,
-				    unsigned int type, int allow_dups,
+				    unsigned int obj_type, int allow_dups,
 				    __kernel_fsid_t *fsid);
 
 /* attach the mark to the inode */
@@ -559,22 +667,23 @@ extern void fsnotify_detach_mark(struct fsnotify_mark *mark);
 extern void fsnotify_free_mark(struct fsnotify_mark *mark);
 /* Wait until all marks queued for destruction are destroyed */
 extern void fsnotify_wait_marks_destroyed(void);
-/* run all the marks in a group, and clear all of the marks attached to given object type */
-extern void fsnotify_clear_marks_by_group(struct fsnotify_group *group, unsigned int type);
+/* Clear all of the marks of a group attached to a given object type */
+extern void fsnotify_clear_marks_by_group(struct fsnotify_group *group,
+					  unsigned int obj_type);
 /* run all the marks in a group, and clear all of the vfsmount marks */
 static inline void fsnotify_clear_vfsmount_marks_by_group(struct fsnotify_group *group)
 {
-	fsnotify_clear_marks_by_group(group, FSNOTIFY_OBJ_TYPE_VFSMOUNT_FL);
+	fsnotify_clear_marks_by_group(group, FSNOTIFY_OBJ_TYPE_VFSMOUNT);
 }
 /* run all the marks in a group, and clear all of the inode marks */
 static inline void fsnotify_clear_inode_marks_by_group(struct fsnotify_group *group)
 {
-	fsnotify_clear_marks_by_group(group, FSNOTIFY_OBJ_TYPE_INODE_FL);
+	fsnotify_clear_marks_by_group(group, FSNOTIFY_OBJ_TYPE_INODE);
 }
 /* run all the marks in a group, and clear all of the sn marks */
 static inline void fsnotify_clear_sb_marks_by_group(struct fsnotify_group *group)
 {
-	fsnotify_clear_marks_by_group(group, FSNOTIFY_OBJ_TYPE_SB_FL);
+	fsnotify_clear_marks_by_group(group, FSNOTIFY_OBJ_TYPE_SB);
 }
 extern void fsnotify_get_mark(struct fsnotify_mark *mark);
 extern void fsnotify_put_mark(struct fsnotify_mark *mark);
diff --git a/include/linux/fsverity.h b/include/linux/fsverity.h
index b568b3c7d095..a7afc800bd8d 100644
--- a/include/linux/fsverity.h
+++ b/include/linux/fsverity.h
@@ -221,7 +221,7 @@ static inline void fsverity_enqueue_verify_work(struct work_struct *work)
  *
  * This checks whether ->i_verity_info has been set.
  *
- * Filesystems call this from ->readpages() to check whether the pages need to
+ * Filesystems call this from ->readahead() to check whether the pages need to
  * be verified or not.  Don't use IS_VERITY() for this purpose; it's subject to
  * a race condition where the file is being read concurrently with
  * FS_IOC_ENABLE_VERITY completing.  (S_VERITY is set before ->i_verity_info.)
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 832e65f06754..4816b7e11047 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -9,6 +9,7 @@
 
 #include <linux/trace_recursion.h>
 #include <linux/trace_clock.h>
+#include <linux/jump_label.h>
 #include <linux/kallsyms.h>
 #include <linux/linkage.h>
 #include <linux/bitops.h>
@@ -30,16 +31,32 @@
 #define ARCH_SUPPORTS_FTRACE_OPS 0
 #endif
 
+#ifdef CONFIG_TRACING
+extern void ftrace_boot_snapshot(void);
+#else
+static inline void ftrace_boot_snapshot(void) { }
+#endif
+
+#ifdef CONFIG_FUNCTION_TRACER
+struct ftrace_ops;
+struct ftrace_regs;
 /*
  * If the arch's mcount caller does not support all of ftrace's
  * features, then it must call an indirect function that
  * does. Or at least does enough to prevent any unwelcome side effects.
+ *
+ * Also define the function prototype that these architectures use
+ * to call the ftrace_ops_list_func().
  */
 #if !ARCH_SUPPORTS_FTRACE_OPS
 # define FTRACE_FORCE_LIST_FUNC 1
+void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip);
 #else
 # define FTRACE_FORCE_LIST_FUNC 0
+void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
+			       struct ftrace_ops *op, struct ftrace_regs *fregs);
 #endif
+#endif /* CONFIG_FUNCTION_TRACER */
 
 /* Main tracing buffer and events set up */
 #ifdef CONFIG_TRACING
@@ -88,8 +105,6 @@ extern int
 ftrace_enable_sysctl(struct ctl_table *table, int write,
 		     void *buffer, size_t *lenp, loff_t *ppos);
 
-struct ftrace_ops;
-
 #ifndef CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS
 
 struct ftrace_regs {
@@ -207,7 +222,10 @@ struct ftrace_ops_hash {
 void ftrace_free_init_mem(void);
 void ftrace_free_mem(struct module *mod, void *start, void *end);
 #else
-static inline void ftrace_free_init_mem(void) { }
+static inline void ftrace_free_init_mem(void)
+{
+	ftrace_boot_snapshot();
+}
 static inline void ftrace_free_mem(struct module *mod, void *start, void *end) { }
 #endif
 
@@ -316,7 +334,12 @@ int ftrace_modify_direct_caller(struct ftrace_func_entry *entry,
 				unsigned long old_addr,
 				unsigned long new_addr);
 unsigned long ftrace_find_rec_direct(unsigned long ip);
+int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr);
+int unregister_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr);
+int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr);
+
 #else
+struct ftrace_ops;
 # define ftrace_direct_func_count 0
 static inline int register_ftrace_direct(unsigned long ip, unsigned long addr)
 {
@@ -346,6 +369,18 @@ static inline unsigned long ftrace_find_rec_direct(unsigned long ip)
 {
 	return 0;
 }
+static inline int register_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr)
+{
+	return -ENODEV;
+}
+static inline int unregister_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr)
+{
+	return -ENODEV;
+}
+static inline int modify_ftrace_direct_multi(struct ftrace_ops *ops, unsigned long addr)
+{
+	return -ENODEV;
+}
 #endif /* CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS */
 
 #ifndef CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
@@ -487,6 +522,8 @@ struct dyn_ftrace {
 
 int ftrace_set_filter_ip(struct ftrace_ops *ops, unsigned long ip,
 			 int remove, int reset);
+int ftrace_set_filter_ips(struct ftrace_ops *ops, unsigned long *ips,
+			  unsigned int cnt, int remove, int reset);
 int ftrace_set_filter(struct ftrace_ops *ops, unsigned char *buf,
 		       int len, int reset);
 int ftrace_set_notrace(struct ftrace_ops *ops, unsigned char *buf,
@@ -777,6 +814,7 @@ static inline unsigned long ftrace_location(unsigned long ip)
 #define ftrace_regex_open(ops, flag, inod, file) ({ -ENODEV; })
 #define ftrace_set_early_filter(ops, buf, enable) do { } while (0)
 #define ftrace_set_filter_ip(ops, ip, remove, reset) ({ -ENODEV; })
+#define ftrace_set_filter_ips(ops, ips, cnt, remove, reset) ({ -ENODEV; })
 #define ftrace_set_filter(ops, buf, len, reset) ({ -ENODEV; })
 #define ftrace_set_notrace(ops, buf, len, reset) ({ -ENODEV; })
 #define ftrace_free_filter(ops) do { } while (0)
@@ -795,6 +833,15 @@ static inline bool is_ftrace_trampoline(unsigned long addr)
 }
 #endif /* CONFIG_DYNAMIC_FTRACE */
 
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+#ifndef ftrace_graph_func
+#define ftrace_graph_func ftrace_stub
+#define FTRACE_OPS_GRAPH_STUB FTRACE_OPS_FL_STUB
+#else
+#define FTRACE_OPS_GRAPH_STUB 0
+#endif
+#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
+
 /* totally disable ftrace - can not re-enable after this */
 void ftrace_kill(void);
 
@@ -972,7 +1019,20 @@ unsigned long ftrace_graph_ret_addr(struct task_struct *task, int *idx,
 extern int register_ftrace_graph(struct fgraph_ops *ops);
 extern void unregister_ftrace_graph(struct fgraph_ops *ops);
 
-extern bool ftrace_graph_is_dead(void);
+/**
+ * ftrace_graph_is_dead - returns true if ftrace_graph_stop() was called
+ *
+ * ftrace_graph_stop() is called when a severe error is detected in
+ * the function graph tracing. This function is called by the critical
+ * paths of function graph to keep those paths from doing any more harm.
+ */
+DECLARE_STATIC_KEY_FALSE(kill_ftrace_graph);
+
+static inline bool ftrace_graph_is_dead(void)
+{
+	return static_branch_unlikely(&kill_ftrace_graph);
+}
+
 extern void ftrace_graph_stop(void);
 
 /* The current handlers in use */
diff --git a/include/linux/fwnode.h b/include/linux/fwnode.h
index 9f4ad719bfe3..3a532ba66f6c 100644
--- a/include/linux/fwnode.h
+++ b/include/linux/fwnode.h
@@ -11,6 +11,7 @@
 
 #include <linux/types.h>
 #include <linux/list.h>
+#include <linux/bits.h>
 #include <linux/err.h>
 
 struct fwnode_operations;
diff --git a/include/linux/generic-radix-tree.h b/include/linux/generic-radix-tree.h
index bfd00320c7f3..107613f7d792 100644
--- a/include/linux/generic-radix-tree.h
+++ b/include/linux/generic-radix-tree.h
@@ -38,8 +38,9 @@
 
 #include <asm/page.h>
 #include <linux/bug.h>
-#include <linux/kernel.h>
 #include <linux/log2.h>
+#include <linux/math.h>
+#include <linux/types.h>
 
 struct genradix_root;
 
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
deleted file mode 100644
index 0f5315c2b5a3..000000000000
--- a/include/linux/genhd.h
+++ /dev/null
@@ -1,330 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_GENHD_H
-#define _LINUX_GENHD_H
-
-/*
- * 	genhd.h Copyright (C) 1992 Drew Eckhardt
- *	Generic hard disk header file by  
- * 		Drew Eckhardt
- *
- *		<drew@colorado.edu>
- */
-
-#include <linux/types.h>
-#include <linux/kdev_t.h>
-#include <linux/rcupdate.h>
-#include <linux/slab.h>
-#include <linux/percpu-refcount.h>
-#include <linux/uuid.h>
-#include <linux/blk_types.h>
-#include <asm/local.h>
-
-extern const struct device_type disk_type;
-extern struct device_type part_type;
-extern struct class block_class;
-
-#define DISK_MAX_PARTS			256
-#define DISK_NAME_LEN			32
-
-#include <linux/major.h>
-#include <linux/device.h>
-#include <linux/smp.h>
-#include <linux/string.h>
-#include <linux/fs.h>
-#include <linux/workqueue.h>
-#include <linux/xarray.h>
-
-#define PARTITION_META_INFO_VOLNAMELTH	64
-/*
- * Enough for the string representation of any kind of UUID plus NULL.
- * EFI UUID is 36 characters. MSDOS UUID is 11 characters.
- */
-#define PARTITION_META_INFO_UUIDLTH	(UUID_STRING_LEN + 1)
-
-struct partition_meta_info {
-	char uuid[PARTITION_META_INFO_UUIDLTH];
-	u8 volname[PARTITION_META_INFO_VOLNAMELTH];
-};
-
-/**
- * DOC: genhd capability flags
- *
- * ``GENHD_FL_REMOVABLE`` (0x0001): indicates that the block device
- * gives access to removable media.
- * When set, the device remains present even when media is not
- * inserted.
- * Must not be set for devices which are removed entirely when the
- * media is removed.
- *
- * ``GENHD_FL_CD`` (0x0008): the block device is a CD-ROM-style
- * device.
- * Affects responses to the ``CDROM_GET_CAPABILITY`` ioctl.
- *
- * ``GENHD_FL_SUPPRESS_PARTITION_INFO`` (0x0020): don't include
- * partition information in ``/proc/partitions`` or in the output of
- * printk_all_partitions().
- * Used for the null block device and some MMC devices.
- *
- * ``GENHD_FL_EXT_DEVT`` (0x0040): the driver supports extended
- * dynamic ``dev_t``, i.e. it wants extended device numbers
- * (``BLOCK_EXT_MAJOR``).
- * This affects the maximum number of partitions.
- *
- * ``GENHD_FL_NATIVE_CAPACITY`` (0x0080): based on information in the
- * partition table, the device's capacity has been extended to its
- * native capacity; i.e. the device has hidden capacity used by one
- * of the partitions (this is a flag used so that native capacity is
- * only ever unlocked once).
- *
- * ``GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE`` (0x0100): event polling is
- * blocked whenever a writer holds an exclusive lock.
- *
- * ``GENHD_FL_NO_PART_SCAN`` (0x0200): partition scanning is disabled.
- * Used for loop devices in their default settings and some MMC
- * devices.
- *
- * ``GENHD_FL_HIDDEN`` (0x0400): the block device is hidden; it
- * doesn't produce events, doesn't appear in sysfs, and doesn't have
- * an associated ``bdev``.
- * Implies ``GENHD_FL_SUPPRESS_PARTITION_INFO`` and
- * ``GENHD_FL_NO_PART_SCAN``.
- * Used for multipath devices.
- */
-#define GENHD_FL_REMOVABLE			0x0001
-/* 2 is unused (used to be GENHD_FL_DRIVERFS) */
-/* 4 is unused (used to be GENHD_FL_MEDIA_CHANGE_NOTIFY) */
-#define GENHD_FL_CD				0x0008
-#define GENHD_FL_SUPPRESS_PARTITION_INFO	0x0020
-#define GENHD_FL_EXT_DEVT			0x0040
-#define GENHD_FL_NATIVE_CAPACITY		0x0080
-#define GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE	0x0100
-#define GENHD_FL_NO_PART_SCAN			0x0200
-#define GENHD_FL_HIDDEN				0x0400
-
-enum {
-	DISK_EVENT_MEDIA_CHANGE			= 1 << 0, /* media changed */
-	DISK_EVENT_EJECT_REQUEST		= 1 << 1, /* eject requested */
-};
-
-enum {
-	/* Poll even if events_poll_msecs is unset */
-	DISK_EVENT_FLAG_POLL			= 1 << 0,
-	/* Forward events to udev */
-	DISK_EVENT_FLAG_UEVENT			= 1 << 1,
-};
-
-struct disk_events;
-struct badblocks;
-
-struct blk_integrity {
-	const struct blk_integrity_profile	*profile;
-	unsigned char				flags;
-	unsigned char				tuple_size;
-	unsigned char				interval_exp;
-	unsigned char				tag_size;
-};
-
-struct gendisk {
-	/* major, first_minor and minors are input parameters only,
-	 * don't use directly.  Use disk_devt() and disk_max_parts().
-	 */
-	int major;			/* major number of driver */
-	int first_minor;
-	int minors;                     /* maximum number of minors, =1 for
-                                         * disks that can't be partitioned. */
-
-	char disk_name[DISK_NAME_LEN];	/* name of major driver */
-
-	unsigned short events;		/* supported events */
-	unsigned short event_flags;	/* flags related to event processing */
-
-	struct xarray part_tbl;
-	struct block_device *part0;
-
-	const struct block_device_operations *fops;
-	struct request_queue *queue;
-	void *private_data;
-
-	int flags;
-	unsigned long state;
-#define GD_NEED_PART_SCAN		0
-#define GD_READ_ONLY			1
-#define GD_DEAD				2
-
-	struct mutex open_mutex;	/* open/close mutex */
-	unsigned open_partitions;	/* number of open partitions */
-
-	struct backing_dev_info	*bdi;
-	struct kobject *slave_dir;
-#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
-	struct list_head slave_bdevs;
-#endif
-	struct timer_rand_state *random;
-	atomic_t sync_io;		/* RAID */
-	struct disk_events *ev;
-#ifdef  CONFIG_BLK_DEV_INTEGRITY
-	struct kobject integrity_kobj;
-#endif	/* CONFIG_BLK_DEV_INTEGRITY */
-#if IS_ENABLED(CONFIG_CDROM)
-	struct cdrom_device_info *cdi;
-#endif
-	int node_id;
-	struct badblocks *bb;
-	struct lockdep_map lockdep_map;
-	u64 diskseq;
-};
-
-static inline bool disk_live(struct gendisk *disk)
-{
-	return !inode_unhashed(disk->part0->bd_inode);
-}
-
-/*
- * The gendisk is refcounted by the part0 block_device, and the bd_device
- * therein is also used for device model presentation in sysfs.
- */
-#define dev_to_disk(device) \
-	(dev_to_bdev(device)->bd_disk)
-#define disk_to_dev(disk) \
-	(&((disk)->part0->bd_device))
-
-#if IS_REACHABLE(CONFIG_CDROM)
-#define disk_to_cdi(disk)	((disk)->cdi)
-#else
-#define disk_to_cdi(disk)	NULL
-#endif
-
-static inline int disk_max_parts(struct gendisk *disk)
-{
-	if (disk->flags & GENHD_FL_EXT_DEVT)
-		return DISK_MAX_PARTS;
-	return disk->minors;
-}
-
-static inline bool disk_part_scan_enabled(struct gendisk *disk)
-{
-	return disk_max_parts(disk) > 1 &&
-		!(disk->flags & GENHD_FL_NO_PART_SCAN);
-}
-
-static inline dev_t disk_devt(struct gendisk *disk)
-{
-	return MKDEV(disk->major, disk->first_minor);
-}
-
-void disk_uevent(struct gendisk *disk, enum kobject_action action);
-
-/* block/genhd.c */
-int device_add_disk(struct device *parent, struct gendisk *disk,
-		const struct attribute_group **groups);
-static inline int add_disk(struct gendisk *disk)
-{
-	return device_add_disk(NULL, disk, NULL);
-}
-extern void del_gendisk(struct gendisk *gp);
-
-void set_disk_ro(struct gendisk *disk, bool read_only);
-
-static inline int get_disk_ro(struct gendisk *disk)
-{
-	return disk->part0->bd_read_only ||
-		test_bit(GD_READ_ONLY, &disk->state);
-}
-
-extern void disk_block_events(struct gendisk *disk);
-extern void disk_unblock_events(struct gendisk *disk);
-extern void disk_flush_events(struct gendisk *disk, unsigned int mask);
-bool set_capacity_and_notify(struct gendisk *disk, sector_t size);
-bool disk_force_media_change(struct gendisk *disk, unsigned int events);
-
-/* drivers/char/random.c */
-extern void add_disk_randomness(struct gendisk *disk) __latent_entropy;
-extern void rand_initialize_disk(struct gendisk *disk);
-
-static inline sector_t get_start_sect(struct block_device *bdev)
-{
-	return bdev->bd_start_sect;
-}
-
-static inline sector_t bdev_nr_sectors(struct block_device *bdev)
-{
-	return i_size_read(bdev->bd_inode) >> 9;
-}
-
-static inline sector_t get_capacity(struct gendisk *disk)
-{
-	return bdev_nr_sectors(disk->part0);
-}
-
-int bdev_disk_changed(struct gendisk *disk, bool invalidate);
-void blk_drop_partitions(struct gendisk *disk);
-
-struct gendisk *__alloc_disk_node(struct request_queue *q, int node_id,
-		struct lock_class_key *lkclass);
-extern void put_disk(struct gendisk *disk);
-struct gendisk *__blk_alloc_disk(int node, struct lock_class_key *lkclass);
-
-/**
- * blk_alloc_disk - allocate a gendisk structure
- * @node_id: numa node to allocate on
- *
- * Allocate and pre-initialize a gendisk structure for use with BIO based
- * drivers.
- *
- * Context: can sleep
- */
-#define blk_alloc_disk(node_id)						\
-({									\
-	static struct lock_class_key __key;				\
-									\
-	__blk_alloc_disk(node_id, &__key);				\
-})
-void blk_cleanup_disk(struct gendisk *disk);
-
-int __register_blkdev(unsigned int major, const char *name,
-		void (*probe)(dev_t devt));
-#define register_blkdev(major, name) \
-	__register_blkdev(major, name, NULL)
-void unregister_blkdev(unsigned int major, const char *name);
-
-bool bdev_check_media_change(struct block_device *bdev);
-int __invalidate_device(struct block_device *bdev, bool kill_dirty);
-void set_capacity(struct gendisk *disk, sector_t size);
-
-/* for drivers/char/raw.c: */
-int blkdev_ioctl(struct block_device *, fmode_t, unsigned, unsigned long);
-long compat_blkdev_ioctl(struct file *, unsigned, unsigned long);
-
-#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
-int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk);
-void bd_unlink_disk_holder(struct block_device *bdev, struct gendisk *disk);
-int bd_register_pending_holders(struct gendisk *disk);
-#else
-static inline int bd_link_disk_holder(struct block_device *bdev,
-				      struct gendisk *disk)
-{
-	return 0;
-}
-static inline void bd_unlink_disk_holder(struct block_device *bdev,
-					 struct gendisk *disk)
-{
-}
-static inline int bd_register_pending_holders(struct gendisk *disk)
-{
-	return 0;
-}
-#endif /* CONFIG_BLOCK_HOLDER_DEPRECATED */
-
-dev_t part_devt(struct gendisk *disk, u8 partno);
-void inc_diskseq(struct gendisk *disk);
-dev_t blk_lookup_devt(const char *name, int partno);
-void blk_request_module(dev_t devt);
-#ifdef CONFIG_BLOCK
-void printk_all_partitions(void);
-#else /* CONFIG_BLOCK */
-static inline void printk_all_partitions(void)
-{
-}
-#endif /* CONFIG_BLOCK */
-
-#endif /* _LINUX_GENHD_H */
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 55b2ec1f965a..3e3d36fc2109 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -54,9 +54,17 @@ struct vm_area_struct;
 #define ___GFP_THISNODE		0x200000u
 #define ___GFP_ACCOUNT		0x400000u
 #define ___GFP_ZEROTAGS		0x800000u
-#define ___GFP_SKIP_KASAN_POISON	0x1000000u
+#ifdef CONFIG_KASAN_HW_TAGS
+#define ___GFP_SKIP_ZERO		0x1000000u
+#define ___GFP_SKIP_KASAN_UNPOISON	0x2000000u
+#define ___GFP_SKIP_KASAN_POISON	0x4000000u
+#else
+#define ___GFP_SKIP_ZERO		0
+#define ___GFP_SKIP_KASAN_UNPOISON	0
+#define ___GFP_SKIP_KASAN_POISON	0
+#endif
 #ifdef CONFIG_LOCKDEP
-#define ___GFP_NOLOCKDEP	0x2000000u
+#define ___GFP_NOLOCKDEP	0x8000000u
 #else
 #define ___GFP_NOLOCKDEP	0
 #endif
@@ -79,7 +87,7 @@ struct vm_area_struct;
  * DOC: Page mobility and placement hints
  *
  * Page mobility and placement hints
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * ---------------------------------
  *
  * These flags provide hints about how mobile the page is. Pages with similar
  * mobility are placed within the same pageblocks to minimise problems due
@@ -112,7 +120,7 @@ struct vm_area_struct;
  * DOC: Watermark modifiers
  *
  * Watermark modifiers -- controls access to emergency reserves
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * ------------------------------------------------------------
  *
  * %__GFP_HIGH indicates that the caller is high-priority and that granting
  * the request is necessary before the system can make forward progress.
@@ -144,7 +152,7 @@ struct vm_area_struct;
  * DOC: Reclaim modifiers
  *
  * Reclaim modifiers
- * ~~~~~~~~~~~~~~~~~
+ * -----------------
  * Please note that all the following flags are only applicable to sleepable
  * allocations (e.g. %GFP_NOWAIT and %GFP_ATOMIC will ignore them).
  *
@@ -224,7 +232,7 @@ struct vm_area_struct;
  * DOC: Action modifiers
  *
  * Action modifiers
- * ~~~~~~~~~~~~~~~~
+ * ----------------
  *
  * %__GFP_NOWARN suppresses allocation failure reports.
  *
@@ -232,31 +240,38 @@ struct vm_area_struct;
  *
  * %__GFP_ZERO returns a zeroed page on success.
  *
- * %__GFP_ZEROTAGS returns a page with zeroed memory tags on success, if
- * __GFP_ZERO is set.
+ * %__GFP_ZEROTAGS zeroes memory tags at allocation time if the memory itself
+ * is being zeroed (either via __GFP_ZERO or via init_on_alloc, provided that
+ * __GFP_SKIP_ZERO is not set). This flag is intended for optimization: setting
+ * memory tags at the same time as zeroing memory has minimal additional
+ * performace impact.
  *
- * %__GFP_SKIP_KASAN_POISON returns a page which does not need to be poisoned
- * on deallocation. Typically used for userspace pages. Currently only has an
- * effect in HW tags mode.
+ * %__GFP_SKIP_KASAN_UNPOISON makes KASAN skip unpoisoning on page allocation.
+ * Only effective in HW_TAGS mode.
+ *
+ * %__GFP_SKIP_KASAN_POISON makes KASAN skip poisoning on page deallocation.
+ * Typically, used for userspace pages. Only effective in HW_TAGS mode.
  */
 #define __GFP_NOWARN	((__force gfp_t)___GFP_NOWARN)
 #define __GFP_COMP	((__force gfp_t)___GFP_COMP)
 #define __GFP_ZERO	((__force gfp_t)___GFP_ZERO)
 #define __GFP_ZEROTAGS	((__force gfp_t)___GFP_ZEROTAGS)
-#define __GFP_SKIP_KASAN_POISON	((__force gfp_t)___GFP_SKIP_KASAN_POISON)
+#define __GFP_SKIP_ZERO ((__force gfp_t)___GFP_SKIP_ZERO)
+#define __GFP_SKIP_KASAN_UNPOISON ((__force gfp_t)___GFP_SKIP_KASAN_UNPOISON)
+#define __GFP_SKIP_KASAN_POISON   ((__force gfp_t)___GFP_SKIP_KASAN_POISON)
 
 /* Disable lockdep for GFP context tracking */
 #define __GFP_NOLOCKDEP ((__force gfp_t)___GFP_NOLOCKDEP)
 
 /* Room for N __GFP_FOO bits */
-#define __GFP_BITS_SHIFT (25 + IS_ENABLED(CONFIG_LOCKDEP))
+#define __GFP_BITS_SHIFT (27 + IS_ENABLED(CONFIG_LOCKDEP))
 #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
 
 /**
  * DOC: Useful GFP flag combinations
  *
  * Useful GFP flag combinations
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * ----------------------------
  *
  * Useful GFP flag combinations that are commonly used. It is recommended
  * that subsystems start with one of these combinations and then set/clear
@@ -302,7 +317,9 @@ struct vm_area_struct;
  * lowest zone as a type of emergency reserve.
  *
  * %GFP_DMA32 is similar to %GFP_DMA except that the caller requires a 32-bit
- * address.
+ * address. Note that kmalloc(..., GFP_DMA32) does not return DMA32 memory
+ * because the DMA32 kmalloc cache array is not implemented.
+ * (Reason: there is no such user in kernel).
  *
  * %GFP_HIGHUSER is for userspace allocations that may be mapped to userspace,
  * do not need to be directly accessible by the kernel but that cannot
@@ -520,21 +537,21 @@ static inline void arch_free_page(struct page *page, int order) { }
 #ifndef HAVE_ARCH_ALLOC_PAGE
 static inline void arch_alloc_page(struct page *page, int order) { }
 #endif
-#ifndef HAVE_ARCH_MAKE_PAGE_ACCESSIBLE
-static inline int arch_make_page_accessible(struct page *page)
-{
-	return 0;
-}
-#endif
 
 struct page *__alloc_pages(gfp_t gfp, unsigned int order, int preferred_nid,
 		nodemask_t *nodemask);
+struct folio *__folio_alloc(gfp_t gfp, unsigned int order, int preferred_nid,
+		nodemask_t *nodemask);
 
 unsigned long __alloc_pages_bulk(gfp_t gfp, int preferred_nid,
 				nodemask_t *nodemask, int nr_pages,
 				struct list_head *page_list,
 				struct page **page_array);
 
+unsigned long alloc_pages_bulk_array_mempolicy(gfp_t gfp,
+				unsigned long nr_pages,
+				struct page **page_array);
+
 /* Bulk allocate order-0 pages */
 static inline unsigned long
 alloc_pages_bulk_list(gfp_t gfp, unsigned long nr_pages, struct list_head *list)
@@ -570,6 +587,15 @@ __alloc_pages_node(int nid, gfp_t gfp_mask, unsigned int order)
 	return __alloc_pages(gfp_mask, order, nid, NULL);
 }
 
+static inline
+struct folio *__folio_alloc_node(gfp_t gfp, unsigned int order, int nid)
+{
+	VM_BUG_ON(nid < 0 || nid >= MAX_NUMNODES);
+	VM_WARN_ON((gfp & __GFP_THISNODE) && !node_online(nid));
+
+	return __folio_alloc(gfp, order, nid, NULL);
+}
+
 /*
  * Allocate pages, preferring the node given as nid. When nid == NUMA_NO_NODE,
  * prefer the current CPU's closest node. Otherwise node must be valid and
@@ -586,31 +612,40 @@ static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask,
 
 #ifdef CONFIG_NUMA
 struct page *alloc_pages(gfp_t gfp, unsigned int order);
-extern struct page *alloc_pages_vma(gfp_t gfp_mask, int order,
+struct folio *folio_alloc(gfp_t gfp, unsigned order);
+struct page *alloc_pages_vma(gfp_t gfp_mask, int order,
 			struct vm_area_struct *vma, unsigned long addr,
-			int node, bool hugepage);
+			bool hugepage);
+struct folio *vma_alloc_folio(gfp_t gfp, int order, struct vm_area_struct *vma,
+		unsigned long addr, bool hugepage);
 #define alloc_hugepage_vma(gfp_mask, vma, addr, order) \
-	alloc_pages_vma(gfp_mask, order, vma, addr, numa_node_id(), true)
+	alloc_pages_vma(gfp_mask, order, vma, addr, true)
 #else
 static inline struct page *alloc_pages(gfp_t gfp_mask, unsigned int order)
 {
 	return alloc_pages_node(numa_node_id(), gfp_mask, order);
 }
-#define alloc_pages_vma(gfp_mask, order, vma, addr, node, false)\
+static inline struct folio *folio_alloc(gfp_t gfp, unsigned int order)
+{
+	return __folio_alloc_node(gfp, order, numa_node_id());
+}
+#define alloc_pages_vma(gfp_mask, order, vma, addr, hugepage) \
 	alloc_pages(gfp_mask, order)
+#define vma_alloc_folio(gfp, order, vma, addr, hugepage)		\
+	folio_alloc(gfp, order)
 #define alloc_hugepage_vma(gfp_mask, vma, addr, order) \
 	alloc_pages(gfp_mask, order)
 #endif
 #define alloc_page(gfp_mask) alloc_pages(gfp_mask, 0)
 #define alloc_page_vma(gfp_mask, vma, addr)			\
-	alloc_pages_vma(gfp_mask, 0, vma, addr, numa_node_id(), false)
+	alloc_pages_vma(gfp_mask, 0, vma, addr, false)
 
 extern unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order);
 extern unsigned long get_zeroed_page(gfp_t gfp_mask);
 
-void *alloc_pages_exact(size_t size, gfp_t gfp_mask);
+void *alloc_pages_exact(size_t size, gfp_t gfp_mask) __alloc_size(1);
 void free_pages_exact(void *virt, size_t size);
-void * __meminit alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask);
+__meminit void *alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask) __alloc_size(2);
 
 #define __get_free_page(gfp_mask) \
 		__get_free_pages((gfp_mask), 0)
diff --git a/include/linux/gfp_api.h b/include/linux/gfp_api.h
new file mode 100644
index 000000000000..5a05a2764a86
--- /dev/null
+++ b/include/linux/gfp_api.h
@@ -0,0 +1 @@
+#include <linux/gfp.h>
diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h
index 97a28ad3393b..e71f6e1bfafe 100644
--- a/include/linux/gpio/consumer.h
+++ b/include/linux/gpio/consumer.h
@@ -8,27 +8,16 @@
 #include <linux/err.h>
 
 struct device;
-
-/**
- * Opaque descriptor for a GPIO. These are obtained using gpiod_get() and are
- * preferable to the old integer-based handles.
- *
- * Contrary to integers, a pointer to a gpio_desc is guaranteed to be valid
- * until the GPIO is released.
- */
 struct gpio_desc;
-
-/**
- * Opaque descriptor for a structure of GPIO array attributes.  This structure
- * is attached to struct gpiod_descs obtained from gpiod_get_array() and can be
- * passed back to get/set array functions in order to activate fast processing
- * path if applicable.
- */
 struct gpio_array;
 
 /**
- * Struct containing an array of descriptors that can be obtained using
- * gpiod_get_array().
+ * struct gpio_descs - Struct containing an array of descriptors that can be
+ *                     obtained using gpiod_get_array()
+ *
+ * @info:	Pointer to the opaque gpio_array structure
+ * @ndescs:	Number of held descriptors
+ * @desc:	Array of pointers to GPIO descriptors
  */
 struct gpio_descs {
 	struct gpio_array *info;
@@ -43,8 +32,16 @@ struct gpio_descs {
 #define GPIOD_FLAGS_BIT_NONEXCLUSIVE	BIT(4)
 
 /**
- * Optional flags that can be passed to one of gpiod_* to configure direction
- * and output value. These values cannot be OR'd.
+ * enum gpiod_flags - Optional flags that can be passed to one of gpiod_* to
+ *                    configure direction and output value. These values
+ *                    cannot be OR'd.
+ *
+ * @GPIOD_ASIS:			Don't change anything
+ * @GPIOD_IN:			Set lines to input mode
+ * @GPIOD_OUT_LOW:		Set lines to output and drive them low
+ * @GPIOD_OUT_HIGH:		Set lines to output and drive them high
+ * @GPIOD_OUT_LOW_OPEN_DRAIN:	Set lines to open-drain output and drive them low
+ * @GPIOD_OUT_HIGH_OPEN_DRAIN:	Set lines to open-drain output and drive them high
  */
 enum gpiod_flags {
 	GPIOD_ASIS	= 0,
@@ -690,9 +687,8 @@ void acpi_dev_remove_driver_gpios(struct acpi_device *adev);
 
 int devm_acpi_dev_add_driver_gpios(struct device *dev,
 				   const struct acpi_gpio_mapping *gpios);
-void devm_acpi_dev_remove_driver_gpios(struct device *dev);
 
-struct gpio_desc *acpi_get_and_request_gpiod(char *path, int pin, char *label);
+struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin, char *label);
 
 #else  /* CONFIG_GPIOLIB && CONFIG_ACPI */
 
@@ -708,7 +704,12 @@ static inline int devm_acpi_dev_add_driver_gpios(struct device *dev,
 {
 	return -ENXIO;
 }
-static inline void devm_acpi_dev_remove_driver_gpios(struct device *dev) {}
+
+static inline struct gpio_desc *acpi_get_and_request_gpiod(char *path, unsigned int pin,
+							   char *label)
+{
+	return ERR_PTR(-ENOSYS);
+}
 
 #endif /* CONFIG_GPIOLIB && CONFIG_ACPI */
 
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index a0f9901dcae6..874aabd270c9 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -169,10 +169,20 @@ struct gpio_irq_chip {
 	/**
 	 * @parent_handler_data:
 	 *
-	 * Data associated, and passed to, the handler for the parent
-	 * interrupt.
+	 * If @per_parent_data is false, @parent_handler_data is a single
+	 * pointer used as the data associated with every parent interrupt.
+	 *
+	 * @parent_handler_data_array:
+	 *
+	 * If @per_parent_data is true, @parent_handler_data_array is
+	 * an array of @num_parents pointers, and is used to associate
+	 * different data for each parent. This cannot be NULL if
+	 * @per_parent_data is true.
 	 */
-	void *parent_handler_data;
+	union {
+		void *parent_handler_data;
+		void **parent_handler_data_array;
+	};
 
 	/**
 	 * @num_parents:
@@ -204,6 +214,23 @@ struct gpio_irq_chip {
 	bool threaded;
 
 	/**
+	 * @per_parent_data:
+	 *
+	 * True if parent_handler_data_array describes a @num_parents
+	 * sized array to be used as parent data.
+	 */
+	bool per_parent_data;
+
+	/**
+	 * @initialized:
+	 *
+	 * Flag to track GPIO chip irq member's initialization.
+	 * This flag will make sure GPIO chip irq members are not used
+	 * before they are initialized.
+	 */
+	bool initialized;
+
+	/**
 	 * @init_hw: optional routine to initialize hardware before
 	 * an IRQ chip will be added. This is quite useful when
 	 * a particular driver wants to clear IRQ related registers
@@ -274,6 +301,7 @@ struct gpio_irq_chip {
  *	number or the name of the SoC IP-block implementing it.
  * @gpiodev: the internal state holder, opaque struct
  * @parent: optional parent device providing the GPIOs
+ * @fwnode: optional fwnode providing this controller's properties
  * @owner: helps prevent removal of modules exporting active GPIOs
  * @request: optional hook for chip-specific activation, such as
  *	enabling module power and clock; may sleep
@@ -362,6 +390,7 @@ struct gpio_chip {
 	const char		*label;
 	struct gpio_device	*gpiodev;
 	struct device		*parent;
+	struct fwnode_handle	*fwnode;
 	struct module		*owner;
 
 	int			(*request)(struct gpio_chip *gc,
diff --git a/include/linux/gpio/machine.h b/include/linux/gpio/machine.h
index d755e529c1e3..2647dd10b541 100644
--- a/include/linux/gpio/machine.h
+++ b/include/linux/gpio/machine.h
@@ -100,6 +100,7 @@ void gpiod_add_lookup_table(struct gpiod_lookup_table *table);
 void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n);
 void gpiod_remove_lookup_table(struct gpiod_lookup_table *table);
 void gpiod_add_hogs(struct gpiod_hog *hogs);
+void gpiod_remove_hogs(struct gpiod_hog *hogs);
 #else /* ! CONFIG_GPIOLIB */
 static inline
 void gpiod_add_lookup_table(struct gpiod_lookup_table *table) {}
@@ -108,6 +109,7 @@ void gpiod_add_lookup_tables(struct gpiod_lookup_table **tables, size_t n) {}
 static inline
 void gpiod_remove_lookup_table(struct gpiod_lookup_table *table) {}
 static inline void gpiod_add_hogs(struct gpiod_hog *hogs) {}
+static inline void gpiod_remove_hogs(struct gpiod_hog *hogs) {}
 #endif /* CONFIG_GPIOLIB */
 
 #endif /* __LINUX_GPIO_MACHINE_H */
diff --git a/include/linux/greybus/greybus_manifest.h b/include/linux/greybus/greybus_manifest.h
index 6e62fe478712..bef9eb2093e9 100644
--- a/include/linux/greybus/greybus_manifest.h
+++ b/include/linux/greybus/greybus_manifest.h
@@ -100,7 +100,7 @@ enum {
 struct greybus_descriptor_string {
 	__u8	length;
 	__u8	id;
-	__u8	string[0];
+	__u8	string[];
 } __packed;
 
 /*
@@ -175,7 +175,7 @@ struct greybus_manifest_header {
 
 struct greybus_manifest {
 	struct greybus_manifest_header		header;
-	struct greybus_descriptor		descriptors[0];
+	struct greybus_descriptor		descriptors[];
 } __packed;
 
 #endif /* __GREYBUS_MANIFEST_H */
diff --git a/include/linux/greybus/hd.h b/include/linux/greybus/hd.h
index d3faf0c1a569..718e2857054e 100644
--- a/include/linux/greybus/hd.h
+++ b/include/linux/greybus/hd.h
@@ -58,7 +58,7 @@ struct gb_host_device {
 
 	struct gb_svc *svc;
 	/* Private data for the host driver */
-	unsigned long hd_priv[0] __aligned(sizeof(s64));
+	unsigned long hd_priv[] __aligned(sizeof(s64));
 };
 #define to_gb_host_device(d) container_of(d, struct gb_host_device, dev)
 
diff --git a/include/linux/greybus/module.h b/include/linux/greybus/module.h
index 47b839af145d..3efe2133acfd 100644
--- a/include/linux/greybus/module.h
+++ b/include/linux/greybus/module.h
@@ -23,7 +23,7 @@ struct gb_module {
 
 	bool disconnected;
 
-	struct gb_interface *interfaces[0];
+	struct gb_interface *interfaces[];
 };
 #define to_gb_module(d) container_of(d, struct gb_module, dev)
 
diff --git a/include/linux/hash.h b/include/linux/hash.h
index ad6fa21d977b..38edaa08f862 100644
--- a/include/linux/hash.h
+++ b/include/linux/hash.h
@@ -62,10 +62,7 @@ static inline u32 __hash_32_generic(u32 val)
 	return val * GOLDEN_RATIO_32;
 }
 
-#ifndef HAVE_ARCH_HASH_32
-#define hash_32 hash_32_generic
-#endif
-static inline u32 hash_32_generic(u32 val, unsigned int bits)
+static inline u32 hash_32(u32 val, unsigned int bits)
 {
 	/* High bits are more random, so use them. */
 	return __hash_32(val) >> (32 - bits);
diff --git a/include/linux/hashtable_api.h b/include/linux/hashtable_api.h
new file mode 100644
index 000000000000..c268ac2c5c0e
--- /dev/null
+++ b/include/linux/hashtable_api.h
@@ -0,0 +1 @@
+#include <linux/hashtable.h>
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 9e067f937dbc..4363a63b9775 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -241,6 +241,7 @@ struct hid_item {
 #define HID_DG_TOUCH		0x000d0033
 #define HID_DG_UNTOUCH		0x000d0034
 #define HID_DG_TAP		0x000d0035
+#define HID_DG_TRANSDUCER_INDEX	0x000d0038
 #define HID_DG_TABLETFUNCTIONKEY	0x000d0039
 #define HID_DG_PROGRAMCHANGEKEY	0x000d003a
 #define HID_DG_BATTERYSTRENGTH	0x000d003b
@@ -253,6 +254,15 @@ struct hid_item {
 #define HID_DG_BARRELSWITCH	0x000d0044
 #define HID_DG_ERASER		0x000d0045
 #define HID_DG_TABLETPICK	0x000d0046
+#define HID_DG_PEN_COLOR			0x000d005c
+#define HID_DG_PEN_LINE_WIDTH			0x000d005e
+#define HID_DG_PEN_LINE_STYLE			0x000d0070
+#define HID_DG_PEN_LINE_STYLE_INK		0x000d0072
+#define HID_DG_PEN_LINE_STYLE_PENCIL		0x000d0073
+#define HID_DG_PEN_LINE_STYLE_HIGHLIGHTER	0x000d0074
+#define HID_DG_PEN_LINE_STYLE_CHISEL_MARKER	0x000d0075
+#define HID_DG_PEN_LINE_STYLE_BRUSH		0x000d0076
+#define HID_DG_PEN_LINE_STYLE_NO_PREFERENCE	0x000d0077
 
 #define HID_CP_CONSUMERCONTROL	0x000c0001
 #define HID_CP_NUMERICKEYPAD	0x000c0002
@@ -332,12 +342,12 @@ struct hid_item {
  * HID device quirks.
  */
 
-/* 
+/*
  * Increase this if you need to configure more HID quirks at module load time
  */
 #define MAX_USBHID_BOOT_QUIRKS 4
 
-#define HID_QUIRK_INVERT			BIT(0)
+/* BIT(0) reserved for backward compatibility, was HID_QUIRK_INVERT */
 #define HID_QUIRK_NOTOUCH			BIT(1)
 #define HID_QUIRK_IGNORE			BIT(2)
 #define HID_QUIRK_NOGET				BIT(3)
@@ -349,6 +359,8 @@ struct hid_item {
 /* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */
 #define HID_QUIRK_ALWAYS_POLL			BIT(10)
 #define HID_QUIRK_INPUT_PER_APP			BIT(11)
+#define HID_QUIRK_X_INVERT			BIT(12)
+#define HID_QUIRK_Y_INVERT			BIT(13)
 #define HID_QUIRK_SKIP_OUTPUT_REPORTS		BIT(16)
 #define HID_QUIRK_SKIP_OUTPUT_REPORT_ID		BIT(17)
 #define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP	BIT(18)
@@ -464,31 +476,50 @@ struct hid_field {
 	unsigned  report_count;		/* number of this field in the report */
 	unsigned  report_type;		/* (input,output,feature) */
 	__s32    *value;		/* last known value(s) */
+	__s32    *new_value;		/* newly read value(s) */
+	__s32    *usages_priorities;	/* priority of each usage when reading the report
+					 * bits 8-16 are reserved for hid-input usage
+					 */
 	__s32     logical_minimum;
 	__s32     logical_maximum;
 	__s32     physical_minimum;
 	__s32     physical_maximum;
 	__s32     unit_exponent;
 	unsigned  unit;
+	bool      ignored;		/* this field is ignored in this event */
 	struct hid_report *report;	/* associated report */
 	unsigned index;			/* index into report->field[] */
 	/* hidinput data */
 	struct hid_input *hidinput;	/* associated input structure */
 	__u16 dpad;			/* dpad input code */
+	unsigned int slot_idx;		/* slot index in a report */
 };
 
 #define HID_MAX_FIELDS 256
 
+struct hid_field_entry {
+	struct list_head list;
+	struct hid_field *field;
+	unsigned int index;
+	__s32 priority;
+};
+
 struct hid_report {
 	struct list_head list;
 	struct list_head hidinput_list;
+	struct list_head field_entry_list;		/* ordered list of input fields */
 	unsigned int id;				/* id of this report */
 	unsigned int type;				/* report type */
 	unsigned int application;			/* application usage for this report */
 	struct hid_field *field[HID_MAX_FIELDS];	/* fields of the report */
+	struct hid_field_entry *field_entries;		/* allocated memory of input field_entry */
 	unsigned maxfield;				/* maximum valid field index */
 	unsigned size;					/* size of the report (bits) */
 	struct hid_device *device;			/* associated device */
+
+	/* tool related state */
+	bool tool_active;				/* whether the current tool is active */
+	unsigned int tool;				/* BTN_TOOL_* */
 };
 
 #define HID_MAX_IDS 256
@@ -788,7 +819,7 @@ struct hid_driver {
 	container_of(pdrv, struct hid_driver, driver)
 
 /**
- * hid_ll_driver - low level driver callbacks
+ * struct hid_ll_driver - low level driver callbacks
  * @start: called on probe to start the device
  * @stop: called on remove
  * @open: called by input layer on open
@@ -840,6 +871,11 @@ static inline bool hid_is_using_ll_driver(struct hid_device *hdev,
 	return hdev->ll_driver == driver;
 }
 
+static inline bool hid_is_usb(struct hid_device *hdev)
+{
+	return hid_is_using_ll_driver(hdev, &usb_hid_driver);
+}
+
 #define	PM_HINT_FULLON	1<<5
 #define PM_HINT_NORMAL	1<<1
 
@@ -889,7 +925,6 @@ extern void hidinput_disconnect(struct hid_device *);
 
 int hid_set_field(struct hid_field *, unsigned, __s32);
 int hid_input_report(struct hid_device *, int type, u8 *, u32, int);
-int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
 struct hid_field *hidinput_get_led_field(struct hid_device *hid);
 unsigned int hidinput_count_leds(struct hid_device *hid);
 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code);
@@ -923,6 +958,16 @@ s32 hid_snto32(__u32 value, unsigned n);
 __u32 hid_field_extract(const struct hid_device *hid, __u8 *report,
 		     unsigned offset, unsigned n);
 
+#ifdef CONFIG_PM
+int hid_driver_suspend(struct hid_device *hdev, pm_message_t state);
+int hid_driver_reset_resume(struct hid_device *hdev);
+int hid_driver_resume(struct hid_device *hdev);
+#else
+static inline int hid_driver_suspend(struct hid_device *hdev, pm_message_t state) { return 0; }
+static inline int hid_driver_reset_resume(struct hid_device *hdev) { return 0; }
+static inline int hid_driver_resume(struct hid_device *hdev) { return 0; }
+#endif
+
 /**
  * hid_device_io_start - enable HID input during probe, remove
  *
@@ -1000,6 +1045,10 @@ static inline void hid_map_usage(struct hid_input *hidinput,
 		bmap = input->ledbit;
 		limit = LED_MAX;
 		break;
+	case EV_MSC:
+		bmap = input->mscbit;
+		limit = MSC_MAX;
+		break;
 	}
 
 	if (unlikely(c > limit || !bmap)) {
@@ -1056,6 +1105,12 @@ int __must_check hid_hw_start(struct hid_device *hdev,
 void hid_hw_stop(struct hid_device *hdev);
 int __must_check hid_hw_open(struct hid_device *hdev);
 void hid_hw_close(struct hid_device *hdev);
+void hid_hw_request(struct hid_device *hdev,
+		    struct hid_report *report, int reqtype);
+int hid_hw_raw_request(struct hid_device *hdev,
+		       unsigned char reportnum, __u8 *buf,
+		       size_t len, unsigned char rtype, int reqtype);
+int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len);
 
 /**
  * hid_hw_power - requests underlying HW to go into given power mode
@@ -1074,68 +1129,6 @@ static inline int hid_hw_power(struct hid_device *hdev, int level)
 
 
 /**
- * hid_hw_request - send report request to device
- *
- * @hdev: hid device
- * @report: report to send
- * @reqtype: hid request type
- */
-static inline void hid_hw_request(struct hid_device *hdev,
-				  struct hid_report *report, int reqtype)
-{
-	if (hdev->ll_driver->request)
-		return hdev->ll_driver->request(hdev, report, reqtype);
-
-	__hid_request(hdev, report, reqtype);
-}
-
-/**
- * hid_hw_raw_request - send report request to device
- *
- * @hdev: hid device
- * @reportnum: report ID
- * @buf: in/out data to transfer
- * @len: length of buf
- * @rtype: HID report type
- * @reqtype: HID_REQ_GET_REPORT or HID_REQ_SET_REPORT
- *
- * Return: count of data transferred, negative if error
- *
- * Same behavior as hid_hw_request, but with raw buffers instead.
- */
-static inline int hid_hw_raw_request(struct hid_device *hdev,
-				  unsigned char reportnum, __u8 *buf,
-				  size_t len, unsigned char rtype, int reqtype)
-{
-	if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf)
-		return -EINVAL;
-
-	return hdev->ll_driver->raw_request(hdev, reportnum, buf, len,
-						    rtype, reqtype);
-}
-
-/**
- * hid_hw_output_report - send output report to device
- *
- * @hdev: hid device
- * @buf: raw data to transfer
- * @len: length of buf
- *
- * Return: count of data transferred, negative if error
- */
-static inline int hid_hw_output_report(struct hid_device *hdev, __u8 *buf,
-					size_t len)
-{
-	if (len < 1 || len > HID_MAX_BUFFER_SIZE || !buf)
-		return -EINVAL;
-
-	if (hdev->ll_driver->output_report)
-		return hdev->ll_driver->output_report(hdev, buf, len);
-
-	return -ENOSYS;
-}
-
-/**
  * hid_hw_idle - send idle request to device
  *
  * @hdev: hid device
@@ -1153,7 +1146,7 @@ static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle,
 }
 
 /**
- * hid_may_wakeup - return if the hid device may act as a wakeup source during system-suspend
+ * hid_hw_may_wakeup - return if the hid device may act as a wakeup source during system-suspend
  *
  * @hdev: hid device
  */
diff --git a/include/linux/highmem-internal.h b/include/linux/highmem-internal.h
index 4aa1031d3e4c..a77be5630209 100644
--- a/include/linux/highmem-internal.h
+++ b/include/linux/highmem-internal.h
@@ -73,6 +73,12 @@ static inline void *kmap_local_page(struct page *page)
 	return __kmap_local_page_prot(page, kmap_prot);
 }
 
+static inline void *kmap_local_folio(struct folio *folio, size_t offset)
+{
+	struct page *page = folio_page(folio, offset / PAGE_SIZE);
+	return __kmap_local_page_prot(page, kmap_prot) + offset % PAGE_SIZE;
+}
+
 static inline void *kmap_local_page_prot(struct page *page, pgprot_t prot)
 {
 	return __kmap_local_page_prot(page, prot);
@@ -171,6 +177,11 @@ static inline void *kmap_local_page(struct page *page)
 	return page_address(page);
 }
 
+static inline void *kmap_local_folio(struct folio *folio, size_t offset)
+{
+	return page_address(&folio->page) + offset;
+}
+
 static inline void *kmap_local_page_prot(struct page *page, pgprot_t prot)
 {
 	return kmap_local_page(page);
@@ -235,6 +246,16 @@ do {								\
 	__kunmap_atomic(__addr);				\
 } while (0)
 
+/**
+ * kunmap_local - Unmap a page mapped via kmap_local_page().
+ * @__addr: An address within the page mapped
+ *
+ * @__addr can be any address within the mapped page.  Commonly it is the
+ * address return from kmap_local_page(), but it can also include offsets.
+ *
+ * Unmapping should be done in the reverse order of the mapping.  See
+ * kmap_local_page() for details.
+ */
 #define kunmap_local(__addr)					\
 do {								\
 	BUILD_BUG_ON(__same_type((__addr), struct page *));	\
diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index b4c49f9cc379..39bb9b47fa9c 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -5,12 +5,11 @@
 #include <linux/fs.h>
 #include <linux/kernel.h>
 #include <linux/bug.h>
+#include <linux/cacheflush.h>
 #include <linux/mm.h>
 #include <linux/uaccess.h>
 #include <linux/hardirq.h>
 
-#include <asm/cacheflush.h>
-
 #include "highmem-internal.h"
 
 /**
@@ -97,6 +96,43 @@ static inline void kmap_flush_unused(void);
 static inline void *kmap_local_page(struct page *page);
 
 /**
+ * kmap_local_folio - Map a page in this folio for temporary usage
+ * @folio: The folio containing the page.
+ * @offset: The byte offset within the folio which identifies the page.
+ *
+ * Requires careful handling when nesting multiple mappings because the map
+ * management is stack based. The unmap has to be in the reverse order of
+ * the map operation::
+ *
+ *   addr1 = kmap_local_folio(folio1, offset1);
+ *   addr2 = kmap_local_folio(folio2, offset2);
+ *   ...
+ *   kunmap_local(addr2);
+ *   kunmap_local(addr1);
+ *
+ * Unmapping addr1 before addr2 is invalid and causes malfunction.
+ *
+ * Contrary to kmap() mappings the mapping is only valid in the context of
+ * the caller and cannot be handed to other contexts.
+ *
+ * On CONFIG_HIGHMEM=n kernels and for low memory pages this returns the
+ * virtual address of the direct mapping. Only real highmem pages are
+ * temporarily mapped.
+ *
+ * While it is significantly faster than kmap() for the higmem case it
+ * comes with restrictions about the pointer validity. Only use when really
+ * necessary.
+ *
+ * On HIGHMEM enabled systems mapping a highmem page has the side effect of
+ * disabling migration in order to keep the virtual address stable across
+ * preemption. No caller of kmap_local_folio() can rely on this side effect.
+ *
+ * Context: Can be invoked from any context.
+ * Return: The virtual address of @offset.
+ */
+static inline void *kmap_local_folio(struct folio *folio, size_t offset);
+
+/**
  * kmap_atomic - Atomically map a page for temporary usage - Deprecated!
  * @page:	Pointer to the page to be mapped
  *
@@ -143,9 +179,9 @@ static inline void invalidate_kernel_vmap_range(void *vaddr, int size)
 #ifndef clear_user_highpage
 static inline void clear_user_highpage(struct page *page, unsigned long vaddr)
 {
-	void *addr = kmap_atomic(page);
+	void *addr = kmap_local_page(page);
 	clear_user_page(addr, vaddr, page);
-	kunmap_atomic(addr);
+	kunmap_local(addr);
 }
 #endif
 
@@ -177,9 +213,9 @@ alloc_zeroed_user_highpage_movable(struct vm_area_struct *vma,
 
 static inline void clear_highpage(struct page *page)
 {
-	void *kaddr = kmap_atomic(page);
+	void *kaddr = kmap_local_page(page);
 	clear_page(kaddr);
-	kunmap_atomic(kaddr);
+	kunmap_local(kaddr);
 }
 
 #ifndef __HAVE_ARCH_TAG_CLEAR_HIGHPAGE
@@ -194,15 +230,15 @@ static inline void tag_clear_highpage(struct page *page)
  * If we pass in a base or tail page, we can zero up to PAGE_SIZE.
  * If we pass in a head page, we can zero up to the size of the compound page.
  */
-#if defined(CONFIG_HIGHMEM) && defined(CONFIG_TRANSPARENT_HUGEPAGE)
+#ifdef CONFIG_HIGHMEM
 void zero_user_segments(struct page *page, unsigned start1, unsigned end1,
 		unsigned start2, unsigned end2);
-#else /* !HIGHMEM || !TRANSPARENT_HUGEPAGE */
+#else
 static inline void zero_user_segments(struct page *page,
 		unsigned start1, unsigned end1,
 		unsigned start2, unsigned end2)
 {
-	void *kaddr = kmap_atomic(page);
+	void *kaddr = kmap_local_page(page);
 	unsigned int i;
 
 	BUG_ON(end1 > page_size(page) || end2 > page_size(page));
@@ -213,11 +249,11 @@ static inline void zero_user_segments(struct page *page,
 	if (end2 > start2)
 		memset(kaddr + start2, 0, end2 - start2);
 
-	kunmap_atomic(kaddr);
+	kunmap_local(kaddr);
 	for (i = 0; i < compound_nr(page); i++)
 		flush_dcache_page(page + i);
 }
-#endif /* !HIGHMEM || !TRANSPARENT_HUGEPAGE */
+#endif
 
 static inline void zero_user_segment(struct page *page,
 	unsigned start, unsigned end)
@@ -238,11 +274,11 @@ static inline void copy_user_highpage(struct page *to, struct page *from,
 {
 	char *vfrom, *vto;
 
-	vfrom = kmap_atomic(from);
-	vto = kmap_atomic(to);
+	vfrom = kmap_local_page(from);
+	vto = kmap_local_page(to);
 	copy_user_page(vto, vfrom, vaddr, to);
-	kunmap_atomic(vto);
-	kunmap_atomic(vfrom);
+	kunmap_local(vto);
+	kunmap_local(vfrom);
 }
 
 #endif
@@ -253,11 +289,11 @@ static inline void copy_highpage(struct page *to, struct page *from)
 {
 	char *vfrom, *vto;
 
-	vfrom = kmap_atomic(from);
-	vto = kmap_atomic(to);
+	vfrom = kmap_local_page(from);
+	vto = kmap_local_page(to);
 	copy_page(vto, vfrom);
-	kunmap_atomic(vto);
-	kunmap_atomic(vfrom);
+	kunmap_local(vto);
+	kunmap_local(vfrom);
 }
 
 #endif
@@ -327,4 +363,42 @@ static inline void memzero_page(struct page *page, size_t offset, size_t len)
 	kunmap_local(addr);
 }
 
+/**
+ * folio_zero_segments() - Zero two byte ranges in a folio.
+ * @folio: The folio to write to.
+ * @start1: The first byte to zero.
+ * @xend1: One more than the last byte in the first range.
+ * @start2: The first byte to zero in the second range.
+ * @xend2: One more than the last byte in the second range.
+ */
+static inline void folio_zero_segments(struct folio *folio,
+		size_t start1, size_t xend1, size_t start2, size_t xend2)
+{
+	zero_user_segments(&folio->page, start1, xend1, start2, xend2);
+}
+
+/**
+ * folio_zero_segment() - Zero a byte range in a folio.
+ * @folio: The folio to write to.
+ * @start: The first byte to zero.
+ * @xend: One more than the last byte to zero.
+ */
+static inline void folio_zero_segment(struct folio *folio,
+		size_t start, size_t xend)
+{
+	zero_user_segments(&folio->page, start, xend, 0, 0);
+}
+
+/**
+ * folio_zero_range() - Zero a byte range in a folio.
+ * @folio: The folio to write to.
+ * @start: The first byte to zero.
+ * @length: The number of bytes to zero.
+ */
+static inline void folio_zero_range(struct folio *folio,
+		size_t start, size_t length)
+{
+	zero_user_segments(&folio->page, start, start + length, 0, 0);
+}
+
 #endif /* _LINUX_HIGHMEM_H */
diff --git a/include/linux/hisi_acc_qm.h b/include/linux/hisi_acc_qm.h
new file mode 100644
index 000000000000..177f7b7cd414
--- /dev/null
+++ b/include/linux/hisi_acc_qm.h
@@ -0,0 +1,490 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019 HiSilicon Limited. */
+#ifndef HISI_ACC_QM_H
+#define HISI_ACC_QM_H
+
+#include <linux/bitfield.h>
+#include <linux/debugfs.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#define QM_QNUM_V1			4096
+#define QM_QNUM_V2			1024
+#define QM_MAX_VFS_NUM_V2		63
+
+/* qm user domain */
+#define QM_ARUSER_M_CFG_1		0x100088
+#define AXUSER_SNOOP_ENABLE		BIT(30)
+#define AXUSER_CMD_TYPE			GENMASK(14, 12)
+#define AXUSER_CMD_SMMU_NORMAL		1
+#define AXUSER_NS			BIT(6)
+#define AXUSER_NO			BIT(5)
+#define AXUSER_FP			BIT(4)
+#define AXUSER_SSV			BIT(0)
+#define AXUSER_BASE			(AXUSER_SNOOP_ENABLE |		\
+					FIELD_PREP(AXUSER_CMD_TYPE,	\
+					AXUSER_CMD_SMMU_NORMAL) |	\
+					AXUSER_NS | AXUSER_NO | AXUSER_FP)
+#define QM_ARUSER_M_CFG_ENABLE		0x100090
+#define ARUSER_M_CFG_ENABLE		0xfffffffe
+#define QM_AWUSER_M_CFG_1		0x100098
+#define QM_AWUSER_M_CFG_ENABLE		0x1000a0
+#define AWUSER_M_CFG_ENABLE		0xfffffffe
+#define QM_WUSER_M_CFG_ENABLE		0x1000a8
+#define WUSER_M_CFG_ENABLE		0xffffffff
+
+/* mailbox */
+#define QM_MB_CMD_SQC                   0x0
+#define QM_MB_CMD_CQC                   0x1
+#define QM_MB_CMD_EQC                   0x2
+#define QM_MB_CMD_AEQC                  0x3
+#define QM_MB_CMD_SQC_BT                0x4
+#define QM_MB_CMD_CQC_BT                0x5
+#define QM_MB_CMD_SQC_VFT_V2            0x6
+#define QM_MB_CMD_STOP_QP               0x8
+#define QM_MB_CMD_SRC                   0xc
+#define QM_MB_CMD_DST                   0xd
+
+#define QM_MB_CMD_SEND_BASE		0x300
+#define QM_MB_EVENT_SHIFT               8
+#define QM_MB_BUSY_SHIFT		13
+#define QM_MB_OP_SHIFT			14
+#define QM_MB_CMD_DATA_ADDR_L		0x304
+#define QM_MB_CMD_DATA_ADDR_H		0x308
+#define QM_MB_MAX_WAIT_CNT		6000
+
+/* doorbell */
+#define QM_DOORBELL_CMD_SQ              0
+#define QM_DOORBELL_CMD_CQ              1
+#define QM_DOORBELL_CMD_EQ              2
+#define QM_DOORBELL_CMD_AEQ             3
+
+#define QM_DOORBELL_SQ_CQ_BASE_V2	0x1000
+#define QM_DOORBELL_EQ_AEQ_BASE_V2	0x2000
+#define QM_QP_MAX_NUM_SHIFT             11
+#define QM_DB_CMD_SHIFT_V2		12
+#define QM_DB_RAND_SHIFT_V2		16
+#define QM_DB_INDEX_SHIFT_V2		32
+#define QM_DB_PRIORITY_SHIFT_V2		48
+#define QM_VF_STATE			0x60
+
+/* qm cache */
+#define QM_CACHE_CTL			0x100050
+#define SQC_CACHE_ENABLE		BIT(0)
+#define CQC_CACHE_ENABLE		BIT(1)
+#define SQC_CACHE_WB_ENABLE		BIT(4)
+#define SQC_CACHE_WB_THRD		GENMASK(10, 5)
+#define CQC_CACHE_WB_ENABLE		BIT(11)
+#define CQC_CACHE_WB_THRD		GENMASK(17, 12)
+#define QM_AXI_M_CFG			0x1000ac
+#define AXI_M_CFG			0xffff
+#define QM_AXI_M_CFG_ENABLE		0x1000b0
+#define AM_CFG_SINGLE_PORT_MAX_TRANS	0x300014
+#define AXI_M_CFG_ENABLE		0xffffffff
+#define QM_PEH_AXUSER_CFG		0x1000cc
+#define QM_PEH_AXUSER_CFG_ENABLE	0x1000d0
+#define PEH_AXUSER_CFG			0x401001
+#define PEH_AXUSER_CFG_ENABLE		0xffffffff
+
+#define QM_AXI_RRESP			BIT(0)
+#define QM_AXI_BRESP			BIT(1)
+#define QM_ECC_MBIT			BIT(2)
+#define QM_ECC_1BIT			BIT(3)
+#define QM_ACC_GET_TASK_TIMEOUT		BIT(4)
+#define QM_ACC_DO_TASK_TIMEOUT		BIT(5)
+#define QM_ACC_WB_NOT_READY_TIMEOUT	BIT(6)
+#define QM_SQ_CQ_VF_INVALID		BIT(7)
+#define QM_CQ_VF_INVALID		BIT(8)
+#define QM_SQ_VF_INVALID		BIT(9)
+#define QM_DB_TIMEOUT			BIT(10)
+#define QM_OF_FIFO_OF			BIT(11)
+#define QM_DB_RANDOM_INVALID		BIT(12)
+#define QM_MAILBOX_TIMEOUT		BIT(13)
+#define QM_FLR_TIMEOUT			BIT(14)
+
+#define QM_BASE_NFE	(QM_AXI_RRESP | QM_AXI_BRESP | QM_ECC_MBIT | \
+			 QM_ACC_GET_TASK_TIMEOUT | QM_DB_TIMEOUT | \
+			 QM_OF_FIFO_OF | QM_DB_RANDOM_INVALID | \
+			 QM_MAILBOX_TIMEOUT | QM_FLR_TIMEOUT)
+#define QM_BASE_CE			QM_ECC_1BIT
+
+#define QM_Q_DEPTH			1024
+#define QM_MIN_QNUM                     2
+#define HISI_ACC_SGL_SGE_NR_MAX		255
+#define QM_SHAPER_CFG			0x100164
+#define QM_SHAPER_ENABLE		BIT(30)
+#define QM_SHAPER_TYPE1_OFFSET		10
+
+/* page number for queue file region */
+#define QM_DOORBELL_PAGE_NR		1
+
+/* uacce mode of the driver */
+#define UACCE_MODE_NOUACCE		0 /* don't use uacce */
+#define UACCE_MODE_SVA			1 /* use uacce sva mode */
+#define UACCE_MODE_DESC	"0(default) means only register to crypto, 1 means both register to crypto and uacce"
+
+enum qm_stop_reason {
+	QM_NORMAL,
+	QM_SOFT_RESET,
+	QM_FLR,
+};
+
+enum qm_state {
+	QM_INIT = 0,
+	QM_START,
+	QM_CLOSE,
+	QM_STOP,
+};
+
+enum qp_state {
+	QP_INIT = 1,
+	QP_START,
+	QP_STOP,
+	QP_CLOSE,
+};
+
+enum qm_hw_ver {
+	QM_HW_UNKNOWN = -1,
+	QM_HW_V1 = 0x20,
+	QM_HW_V2 = 0x21,
+	QM_HW_V3 = 0x30,
+};
+
+enum qm_fun_type {
+	QM_HW_PF,
+	QM_HW_VF,
+};
+
+enum qm_debug_file {
+	CURRENT_QM,
+	CURRENT_Q,
+	CLEAR_ENABLE,
+	DEBUG_FILE_NUM,
+};
+
+enum qm_vf_state {
+	QM_READY = 0,
+	QM_NOT_READY,
+};
+
+struct qm_dfx {
+	atomic64_t err_irq_cnt;
+	atomic64_t aeq_irq_cnt;
+	atomic64_t abnormal_irq_cnt;
+	atomic64_t create_qp_err_cnt;
+	atomic64_t mb_err_cnt;
+};
+
+struct debugfs_file {
+	enum qm_debug_file index;
+	struct mutex lock;
+	struct qm_debug *debug;
+};
+
+struct qm_debug {
+	u32 curr_qm_qp_num;
+	u32 sqe_mask_offset;
+	u32 sqe_mask_len;
+	struct qm_dfx dfx;
+	struct dentry *debug_root;
+	struct dentry *qm_d;
+	struct debugfs_file files[DEBUG_FILE_NUM];
+};
+
+struct qm_shaper_factor {
+	u32 func_qos;
+	u64 cir_b;
+	u64 cir_u;
+	u64 cir_s;
+	u64 cbs_s;
+};
+
+struct qm_dma {
+	void *va;
+	dma_addr_t dma;
+	size_t size;
+};
+
+struct hisi_qm_status {
+	u32 eq_head;
+	bool eqc_phase;
+	u32 aeq_head;
+	bool aeqc_phase;
+	atomic_t flags;
+	int stop_reason;
+};
+
+struct hisi_qm;
+
+struct hisi_qm_err_info {
+	char *acpi_rst;
+	u32 msi_wr_port;
+	u32 ecc_2bits_mask;
+	u32 dev_ce_mask;
+	u32 ce;
+	u32 nfe;
+	u32 fe;
+};
+
+struct hisi_qm_err_status {
+	u32 is_qm_ecc_mbit;
+	u32 is_dev_ecc_mbit;
+};
+
+struct hisi_qm_err_ini {
+	int (*hw_init)(struct hisi_qm *qm);
+	void (*hw_err_enable)(struct hisi_qm *qm);
+	void (*hw_err_disable)(struct hisi_qm *qm);
+	u32 (*get_dev_hw_err_status)(struct hisi_qm *qm);
+	void (*clear_dev_hw_err_status)(struct hisi_qm *qm, u32 err_sts);
+	void (*open_axi_master_ooo)(struct hisi_qm *qm);
+	void (*close_axi_master_ooo)(struct hisi_qm *qm);
+	void (*open_sva_prefetch)(struct hisi_qm *qm);
+	void (*close_sva_prefetch)(struct hisi_qm *qm);
+	void (*log_dev_hw_err)(struct hisi_qm *qm, u32 err_sts);
+	void (*err_info_init)(struct hisi_qm *qm);
+};
+
+struct hisi_qm_list {
+	struct mutex lock;
+	struct list_head list;
+	int (*register_to_crypto)(struct hisi_qm *qm);
+	void (*unregister_from_crypto)(struct hisi_qm *qm);
+};
+
+struct hisi_qm {
+	enum qm_hw_ver ver;
+	enum qm_fun_type fun_type;
+	const char *dev_name;
+	struct pci_dev *pdev;
+	void __iomem *io_base;
+	void __iomem *db_io_base;
+	u32 sqe_size;
+	u32 qp_base;
+	u32 qp_num;
+	u32 qp_in_used;
+	u32 ctrl_qp_num;
+	u32 max_qp_num;
+	u32 vfs_num;
+	u32 db_interval;
+	struct list_head list;
+	struct hisi_qm_list *qm_list;
+
+	struct qm_dma qdma;
+	struct qm_sqc *sqc;
+	struct qm_cqc *cqc;
+	struct qm_eqe *eqe;
+	struct qm_aeqe *aeqe;
+	dma_addr_t sqc_dma;
+	dma_addr_t cqc_dma;
+	dma_addr_t eqe_dma;
+	dma_addr_t aeqe_dma;
+
+	struct hisi_qm_status status;
+	const struct hisi_qm_err_ini *err_ini;
+	struct hisi_qm_err_info err_info;
+	struct hisi_qm_err_status err_status;
+	unsigned long misc_ctl; /* driver removing and reset sched */
+
+	struct rw_semaphore qps_lock;
+	struct idr qp_idr;
+	struct hisi_qp *qp_array;
+
+	struct mutex mailbox_lock;
+
+	const struct hisi_qm_hw_ops *ops;
+
+	struct qm_debug debug;
+
+	u32 error_mask;
+
+	struct workqueue_struct *wq;
+	struct work_struct work;
+	struct work_struct rst_work;
+	struct work_struct cmd_process;
+
+	const char *algs;
+	bool use_sva;
+	bool is_frozen;
+
+	/* doorbell isolation enable */
+	bool use_db_isolation;
+	resource_size_t phys_base;
+	resource_size_t db_phys_base;
+	struct uacce_device *uacce;
+	int mode;
+	struct qm_shaper_factor *factor;
+	u32 mb_qos;
+	u32 type_rate;
+};
+
+struct hisi_qp_status {
+	atomic_t used;
+	u16 sq_tail;
+	u16 cq_head;
+	bool cqc_phase;
+	atomic_t flags;
+};
+
+struct hisi_qp_ops {
+	int (*fill_sqe)(void *sqe, void *q_parm, void *d_parm);
+};
+
+struct hisi_qp {
+	u32 qp_id;
+	u8 alg_type;
+	u8 req_type;
+
+	struct qm_dma qdma;
+	void *sqe;
+	struct qm_cqe *cqe;
+	dma_addr_t sqe_dma;
+	dma_addr_t cqe_dma;
+
+	struct hisi_qp_status qp_status;
+	struct hisi_qp_ops *hw_ops;
+	void *qp_ctx;
+	void (*req_cb)(struct hisi_qp *qp, void *data);
+	void (*event_cb)(struct hisi_qp *qp);
+
+	struct hisi_qm *qm;
+	bool is_resetting;
+	bool is_in_kernel;
+	u16 pasid;
+	struct uacce_queue *uacce_q;
+};
+
+static inline int q_num_set(const char *val, const struct kernel_param *kp,
+			    unsigned int device)
+{
+	struct pci_dev *pdev = pci_get_device(PCI_VENDOR_ID_HUAWEI,
+					      device, NULL);
+	u32 n, q_num;
+	int ret;
+
+	if (!val)
+		return -EINVAL;
+
+	if (!pdev) {
+		q_num = min_t(u32, QM_QNUM_V1, QM_QNUM_V2);
+		pr_info("No device found currently, suppose queue number is %u\n",
+			q_num);
+	} else {
+		if (pdev->revision == QM_HW_V1)
+			q_num = QM_QNUM_V1;
+		else
+			q_num = QM_QNUM_V2;
+	}
+
+	ret = kstrtou32(val, 10, &n);
+	if (ret || n < QM_MIN_QNUM || n > q_num)
+		return -EINVAL;
+
+	return param_set_int(val, kp);
+}
+
+static inline int vfs_num_set(const char *val, const struct kernel_param *kp)
+{
+	u32 n;
+	int ret;
+
+	if (!val)
+		return -EINVAL;
+
+	ret = kstrtou32(val, 10, &n);
+	if (ret < 0)
+		return ret;
+
+	if (n > QM_MAX_VFS_NUM_V2)
+		return -EINVAL;
+
+	return param_set_int(val, kp);
+}
+
+static inline int mode_set(const char *val, const struct kernel_param *kp)
+{
+	u32 n;
+	int ret;
+
+	if (!val)
+		return -EINVAL;
+
+	ret = kstrtou32(val, 10, &n);
+	if (ret != 0 || (n != UACCE_MODE_SVA &&
+			 n != UACCE_MODE_NOUACCE))
+		return -EINVAL;
+
+	return param_set_int(val, kp);
+}
+
+static inline int uacce_mode_set(const char *val, const struct kernel_param *kp)
+{
+	return mode_set(val, kp);
+}
+
+static inline void hisi_qm_init_list(struct hisi_qm_list *qm_list)
+{
+	INIT_LIST_HEAD(&qm_list->list);
+	mutex_init(&qm_list->lock);
+}
+
+int hisi_qm_init(struct hisi_qm *qm);
+void hisi_qm_uninit(struct hisi_qm *qm);
+int hisi_qm_start(struct hisi_qm *qm);
+int hisi_qm_stop(struct hisi_qm *qm, enum qm_stop_reason r);
+struct hisi_qp *hisi_qm_create_qp(struct hisi_qm *qm, u8 alg_type);
+int hisi_qm_start_qp(struct hisi_qp *qp, unsigned long arg);
+int hisi_qm_stop_qp(struct hisi_qp *qp);
+void hisi_qm_release_qp(struct hisi_qp *qp);
+int hisi_qp_send(struct hisi_qp *qp, const void *msg);
+int hisi_qm_get_free_qp_num(struct hisi_qm *qm);
+int hisi_qm_get_vft(struct hisi_qm *qm, u32 *base, u32 *number);
+void hisi_qm_debug_init(struct hisi_qm *qm);
+enum qm_hw_ver hisi_qm_get_hw_version(struct pci_dev *pdev);
+void hisi_qm_debug_regs_clear(struct hisi_qm *qm);
+int hisi_qm_sriov_enable(struct pci_dev *pdev, int max_vfs);
+int hisi_qm_sriov_disable(struct pci_dev *pdev, bool is_frozen);
+int hisi_qm_sriov_configure(struct pci_dev *pdev, int num_vfs);
+void hisi_qm_dev_err_init(struct hisi_qm *qm);
+void hisi_qm_dev_err_uninit(struct hisi_qm *qm);
+pci_ers_result_t hisi_qm_dev_err_detected(struct pci_dev *pdev,
+					  pci_channel_state_t state);
+pci_ers_result_t hisi_qm_dev_slot_reset(struct pci_dev *pdev);
+void hisi_qm_reset_prepare(struct pci_dev *pdev);
+void hisi_qm_reset_done(struct pci_dev *pdev);
+
+int hisi_qm_wait_mb_ready(struct hisi_qm *qm);
+int hisi_qm_mb(struct hisi_qm *qm, u8 cmd, dma_addr_t dma_addr, u16 queue,
+	       bool op);
+
+struct hisi_acc_sgl_pool;
+struct hisi_acc_hw_sgl *hisi_acc_sg_buf_map_to_hw_sgl(struct device *dev,
+	struct scatterlist *sgl, struct hisi_acc_sgl_pool *pool,
+	u32 index, dma_addr_t *hw_sgl_dma);
+void hisi_acc_sg_buf_unmap(struct device *dev, struct scatterlist *sgl,
+			   struct hisi_acc_hw_sgl *hw_sgl);
+struct hisi_acc_sgl_pool *hisi_acc_create_sgl_pool(struct device *dev,
+						   u32 count, u32 sge_nr);
+void hisi_acc_free_sgl_pool(struct device *dev,
+			    struct hisi_acc_sgl_pool *pool);
+int hisi_qm_alloc_qps_node(struct hisi_qm_list *qm_list, int qp_num,
+			   u8 alg_type, int node, struct hisi_qp **qps);
+void hisi_qm_free_qps(struct hisi_qp **qps, int qp_num);
+void hisi_qm_dev_shutdown(struct pci_dev *pdev);
+void hisi_qm_wait_task_finish(struct hisi_qm *qm, struct hisi_qm_list *qm_list);
+int hisi_qm_alg_register(struct hisi_qm *qm, struct hisi_qm_list *qm_list);
+void hisi_qm_alg_unregister(struct hisi_qm *qm, struct hisi_qm_list *qm_list);
+int hisi_qm_resume(struct device *dev);
+int hisi_qm_suspend(struct device *dev);
+void hisi_qm_pm_uninit(struct hisi_qm *qm);
+void hisi_qm_pm_init(struct hisi_qm *qm);
+int hisi_qm_get_dfx_access(struct hisi_qm *qm);
+void hisi_qm_put_dfx_access(struct hisi_qm *qm);
+void hisi_qm_regs_dump(struct seq_file *s, struct debugfs_regset32 *regset);
+
+/* Used by VFIO ACC live migration driver */
+struct pci_driver *hisi_sec_get_pf_driver(void);
+struct pci_driver *hisi_hpre_get_pf_driver(void);
+struct pci_driver *hisi_zip_get_pf_driver(void);
+#endif
diff --git a/include/linux/hmm.h b/include/linux/hmm.h
index 2fd2e91d5107..d5a6f101f843 100644
--- a/include/linux/hmm.h
+++ b/include/linux/hmm.h
@@ -9,14 +9,9 @@
 #ifndef LINUX_HMM_H
 #define LINUX_HMM_H
 
-#include <linux/kconfig.h>
-#include <linux/pgtable.h>
+#include <linux/mm.h>
 
-#include <linux/device.h>
-#include <linux/migrate.h>
-#include <linux/memremap.h>
-#include <linux/completion.h>
-#include <linux/mmu_notifier.h>
+struct mmu_interval_notifier;
 
 /*
  * On output:
diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index 7bccf589aba7..e8dc5bc41f79 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -7,6 +7,8 @@
 #define __LINUX_HOST1X_H
 
 #include <linux/device.h>
+#include <linux/dma-direction.h>
+#include <linux/spinlock.h>
 #include <linux/types.h>
 
 enum host1x_class {
@@ -15,6 +17,8 @@ enum host1x_class {
 	HOST1X_CLASS_GR2D_SB = 0x52,
 	HOST1X_CLASS_VIC = 0x5D,
 	HOST1X_CLASS_GR3D = 0x60,
+	HOST1X_CLASS_NVDEC = 0xF0,
+	HOST1X_CLASS_NVDEC1 = 0xF5,
 };
 
 struct host1x;
@@ -24,6 +28,28 @@ struct iommu_group;
 u64 host1x_get_dma_mask(struct host1x *host1x);
 
 /**
+ * struct host1x_bo_cache - host1x buffer object cache
+ * @mappings: list of mappings
+ * @lock: synchronizes accesses to the list of mappings
+ */
+struct host1x_bo_cache {
+	struct list_head mappings;
+	struct mutex lock;
+};
+
+static inline void host1x_bo_cache_init(struct host1x_bo_cache *cache)
+{
+	INIT_LIST_HEAD(&cache->mappings);
+	mutex_init(&cache->lock);
+}
+
+static inline void host1x_bo_cache_destroy(struct host1x_bo_cache *cache)
+{
+	/* XXX warn if not empty? */
+	mutex_destroy(&cache->lock);
+}
+
+/**
  * struct host1x_client_ops - host1x client operations
  * @early_init: host1x client early initialization code
  * @init: host1x client initialization code
@@ -73,6 +99,8 @@ struct host1x_client {
 	struct host1x_client *parent;
 	unsigned int usecount;
 	struct mutex lock;
+
+	struct host1x_bo_cache cache;
 };
 
 /*
@@ -82,23 +110,48 @@ struct host1x_client {
 struct host1x_bo;
 struct sg_table;
 
+struct host1x_bo_mapping {
+	struct kref ref;
+	struct dma_buf_attachment *attach;
+	enum dma_data_direction direction;
+	struct list_head list;
+	struct host1x_bo *bo;
+	struct sg_table *sgt;
+	unsigned int chunks;
+	struct device *dev;
+	dma_addr_t phys;
+	size_t size;
+
+	struct host1x_bo_cache *cache;
+	struct list_head entry;
+};
+
+static inline struct host1x_bo_mapping *to_host1x_bo_mapping(struct kref *ref)
+{
+	return container_of(ref, struct host1x_bo_mapping, ref);
+}
+
 struct host1x_bo_ops {
 	struct host1x_bo *(*get)(struct host1x_bo *bo);
 	void (*put)(struct host1x_bo *bo);
-	struct sg_table *(*pin)(struct device *dev, struct host1x_bo *bo,
-				dma_addr_t *phys);
-	void (*unpin)(struct device *dev, struct sg_table *sgt);
+	struct host1x_bo_mapping *(*pin)(struct device *dev, struct host1x_bo *bo,
+					 enum dma_data_direction dir);
+	void (*unpin)(struct host1x_bo_mapping *map);
 	void *(*mmap)(struct host1x_bo *bo);
 	void (*munmap)(struct host1x_bo *bo, void *addr);
 };
 
 struct host1x_bo {
 	const struct host1x_bo_ops *ops;
+	struct list_head mappings;
+	spinlock_t lock;
 };
 
 static inline void host1x_bo_init(struct host1x_bo *bo,
 				  const struct host1x_bo_ops *ops)
 {
+	INIT_LIST_HEAD(&bo->mappings);
+	spin_lock_init(&bo->lock);
 	bo->ops = ops;
 }
 
@@ -112,18 +165,10 @@ static inline void host1x_bo_put(struct host1x_bo *bo)
 	bo->ops->put(bo);
 }
 
-static inline struct sg_table *host1x_bo_pin(struct device *dev,
-					     struct host1x_bo *bo,
-					     dma_addr_t *phys)
-{
-	return bo->ops->pin(dev, bo, phys);
-}
-
-static inline void host1x_bo_unpin(struct device *dev, struct host1x_bo *bo,
-				   struct sg_table *sgt)
-{
-	bo->ops->unpin(dev, sgt);
-}
+struct host1x_bo_mapping *host1x_bo_pin(struct device *dev, struct host1x_bo *bo,
+					enum dma_data_direction dir,
+					struct host1x_bo_cache *cache);
+void host1x_bo_unpin(struct host1x_bo_mapping *map);
 
 static inline void *host1x_bo_mmap(struct host1x_bo *bo)
 {
@@ -181,6 +226,7 @@ struct host1x_job;
 
 struct host1x_channel *host1x_channel_request(struct host1x_client *client);
 struct host1x_channel *host1x_channel_get(struct host1x_channel *channel);
+void host1x_channel_stop(struct host1x_channel *channel);
 void host1x_channel_put(struct host1x_channel *channel);
 int host1x_job_submit(struct host1x_job *job);
 
diff --git a/include/linux/hrtimer_api.h b/include/linux/hrtimer_api.h
new file mode 100644
index 000000000000..8d9700894468
--- /dev/null
+++ b/include/linux/hrtimer_api.h
@@ -0,0 +1 @@
+#include <linux/hrtimer.h>
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index f123e15d966e..2999190adc22 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -183,9 +183,8 @@ unsigned long thp_get_unmapped_area(struct file *filp, unsigned long addr,
 
 void prep_transhuge_page(struct page *page);
 void free_transhuge_page(struct page *page);
-bool is_transparent_hugepage(struct page *page);
 
-bool can_split_huge_page(struct page *page, int *pextra_pins);
+bool can_split_folio(struct folio *folio, int *pextra_pins);
 int split_huge_page_to_list(struct page *page, struct list_head *list);
 static inline int split_huge_page(struct page *page)
 {
@@ -194,7 +193,7 @@ static inline int split_huge_page(struct page *page)
 void deferred_split_huge_page(struct page *page);
 
 void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
-		unsigned long address, bool freeze, struct page *page);
+		unsigned long address, bool freeze, struct folio *folio);
 
 #define split_huge_pmd(__vma, __pmd, __address)				\
 	do {								\
@@ -207,7 +206,7 @@ void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
 
 
 void split_huge_pmd_address(struct vm_area_struct *vma, unsigned long address,
-		bool freeze, struct page *page);
+		bool freeze, struct folio *folio);
 
 void __split_huge_pud(struct vm_area_struct *vma, pud_t *pud,
 		unsigned long address);
@@ -251,36 +250,12 @@ static inline spinlock_t *pud_trans_huge_lock(pud_t *pud,
 }
 
 /**
- * thp_head - Head page of a transparent huge page.
- * @page: Any page (tail, head or regular) found in the page cache.
+ * folio_test_pmd_mappable - Can we map this folio with a PMD?
+ * @folio: The folio to test
  */
-static inline struct page *thp_head(struct page *page)
+static inline bool folio_test_pmd_mappable(struct folio *folio)
 {
-	return compound_head(page);
-}
-
-/**
- * thp_order - Order of a transparent huge page.
- * @page: Head page of a transparent huge page.
- */
-static inline unsigned int thp_order(struct page *page)
-{
-	VM_BUG_ON_PGFLAGS(PageTail(page), page);
-	if (PageHead(page))
-		return HPAGE_PMD_ORDER;
-	return 0;
-}
-
-/**
- * thp_nr_pages - The number of regular pages in this huge page.
- * @page: The head page of a huge page.
- */
-static inline int thp_nr_pages(struct page *page)
-{
-	VM_BUG_ON_PGFLAGS(PageTail(page), page);
-	if (PageHead(page))
-		return HPAGE_PMD_NR;
-	return 1;
+	return folio_order(folio) >= HPAGE_PMD_ORDER;
 }
 
 struct page *follow_devmap_pmd(struct vm_area_struct *vma, unsigned long addr,
@@ -336,22 +311,9 @@ static inline struct list_head *page_deferred_list(struct page *page)
 #define HPAGE_PUD_MASK ({ BUILD_BUG(); 0; })
 #define HPAGE_PUD_SIZE ({ BUILD_BUG(); 0; })
 
-static inline struct page *thp_head(struct page *page)
-{
-	VM_BUG_ON_PGFLAGS(PageTail(page), page);
-	return page;
-}
-
-static inline unsigned int thp_order(struct page *page)
+static inline bool folio_test_pmd_mappable(struct folio *folio)
 {
-	VM_BUG_ON_PGFLAGS(PageTail(page), page);
-	return 0;
-}
-
-static inline int thp_nr_pages(struct page *page)
-{
-	VM_BUG_ON_PGFLAGS(PageTail(page), page);
-	return 1;
+	return false;
 }
 
 static inline bool __transparent_hugepage_enabled(struct vm_area_struct *vma)
@@ -378,17 +340,12 @@ static inline bool transhuge_vma_enabled(struct vm_area_struct *vma,
 
 static inline void prep_transhuge_page(struct page *page) {}
 
-static inline bool is_transparent_hugepage(struct page *page)
-{
-	return false;
-}
-
 #define transparent_hugepage_flags 0UL
 
 #define thp_get_unmapped_area	NULL
 
 static inline bool
-can_split_huge_page(struct page *page, int *pextra_pins)
+can_split_folio(struct folio *folio, int *pextra_pins)
 {
 	BUILD_BUG();
 	return false;
@@ -407,9 +364,9 @@ static inline void deferred_split_huge_page(struct page *page) {}
 	do { } while (0)
 
 static inline void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
-		unsigned long address, bool freeze, struct page *page) {}
+		unsigned long address, bool freeze, struct folio *folio) {}
 static inline void split_huge_pmd_address(struct vm_area_struct *vma,
-		unsigned long address, bool freeze, struct page *page) {}
+		unsigned long address, bool freeze, struct folio *folio) {}
 
 #define split_huge_pud(__vma, __pmd, __address)	\
 	do { } while (0)
@@ -484,15 +441,10 @@ static inline bool thp_migration_supported(void)
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
-/**
- * thp_size - Size of a transparent huge page.
- * @page: Head page of a transparent huge page.
- *
- * Return: Number of bytes in this page.
- */
-static inline unsigned long thp_size(struct page *page)
+static inline int split_folio_to_list(struct folio *folio,
+		struct list_head *list)
 {
-	return PAGE_SIZE << thp_order(page);
+	return split_huge_page_to_list(&folio->page, list);
 }
 
 #endif /* _LINUX_HUGE_MM_H */
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 1faebe1cd0ed..ac2a1d758a80 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -124,6 +124,7 @@ struct hugepage_subpool *hugepage_new_subpool(struct hstate *h, long max_hpages,
 void hugepage_put_subpool(struct hugepage_subpool *spool);
 
 void reset_vma_resv_huge_pages(struct vm_area_struct *vma);
+void clear_vma_resv_huge_pages(struct vm_area_struct *vma);
 int hugetlb_sysctl_handler(struct ctl_table *, int, void *, size_t *, loff_t *);
 int hugetlb_overcommit_handler(struct ctl_table *, int, void *, size_t *,
 		loff_t *);
@@ -132,6 +133,10 @@ int hugetlb_treat_movable_handler(struct ctl_table *, int, void *, size_t *,
 int hugetlb_mempolicy_sysctl_handler(struct ctl_table *, int, void *, size_t *,
 		loff_t *);
 
+int move_hugetlb_page_tables(struct vm_area_struct *vma,
+			     struct vm_area_struct *new_vma,
+			     unsigned long old_addr, unsigned long new_addr,
+			     unsigned long len);
 int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *);
 long follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *,
 			 struct page **, struct vm_area_struct **,
@@ -143,9 +148,6 @@ void __unmap_hugepage_range_final(struct mmu_gather *tlb,
 			  struct vm_area_struct *vma,
 			  unsigned long start, unsigned long end,
 			  struct page *ref_page);
-void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
-				unsigned long start, unsigned long end,
-				struct page *ref_page);
 void hugetlb_report_meminfo(struct seq_file *);
 int hugetlb_report_node_meminfo(char *buf, int len, int nid);
 void hugetlb_show_meminfo(void);
@@ -167,6 +169,7 @@ long hugetlb_unreserve_pages(struct inode *inode, long start, long end,
 						long freed);
 bool isolate_huge_page(struct page *page, struct list_head *list);
 int get_hwpoison_huge_page(struct page *page, bool *hugetlb);
+int get_huge_page_for_hwpoison(unsigned long pfn, int flags);
 void putback_active_hugepage(struct page *page);
 void move_hugetlb_state(struct page *oldpage, struct page *newpage, int reason);
 void free_huge_page(struct page *page);
@@ -218,6 +221,10 @@ static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma)
 {
 }
 
+static inline void clear_vma_resv_huge_pages(struct vm_area_struct *vma)
+{
+}
+
 static inline unsigned long hugetlb_total_pages(void)
 {
 	return 0;
@@ -265,6 +272,16 @@ static inline int copy_hugetlb_page_range(struct mm_struct *dst,
 	return 0;
 }
 
+static inline int move_hugetlb_page_tables(struct vm_area_struct *vma,
+					   struct vm_area_struct *new_vma,
+					   unsigned long old_addr,
+					   unsigned long new_addr,
+					   unsigned long len)
+{
+	BUG();
+	return 0;
+}
+
 static inline void hugetlb_report_meminfo(struct seq_file *m)
 {
 }
@@ -362,6 +379,11 @@ static inline int get_hwpoison_huge_page(struct page *page, bool *hugetlb)
 	return 0;
 }
 
+static inline int get_huge_page_for_hwpoison(unsigned long pfn, int flags)
+{
+	return 0;
+}
+
 static inline void putback_active_hugepage(struct page *page)
 {
 }
@@ -385,13 +407,6 @@ static inline void __unmap_hugepage_range_final(struct mmu_gather *tlb,
 	BUG();
 }
 
-static inline void __unmap_hugepage_range(struct mmu_gather *tlb,
-			struct vm_area_struct *vma, unsigned long start,
-			unsigned long end, struct page *ref_page)
-{
-	BUG();
-}
-
 static inline vm_fault_t hugetlb_fault(struct mm_struct *mm,
 			struct vm_area_struct *vma, unsigned long address,
 			unsigned int flags)
@@ -468,8 +483,7 @@ static inline struct hugetlbfs_inode_info *HUGETLBFS_I(struct inode *inode)
 extern const struct file_operations hugetlbfs_file_operations;
 extern const struct vm_operations_struct hugetlb_vm_ops;
 struct file *hugetlb_file_setup(const char *name, size_t size, vm_flags_t acct,
-				struct ucounts **ucounts, int creat_flags,
-				int page_size_log);
+				int creat_flags, int page_size_log);
 
 static inline bool is_file_hugepages(struct file *file)
 {
@@ -488,8 +502,7 @@ static inline struct hstate *hstate_inode(struct inode *i)
 #define is_file_hugepages(file)			false
 static inline struct file *
 hugetlb_file_setup(const char *name, size_t size, vm_flags_t acctflag,
-		struct ucounts **ucounts, int creat_flags,
-		int page_size_log)
+		int creat_flags, int page_size_log)
 {
 	return ERR_PTR(-ENOSYS);
 }
@@ -596,6 +609,7 @@ struct hstate {
 	int next_nid_to_alloc;
 	int next_nid_to_free;
 	unsigned int order;
+	unsigned int demote_order;
 	unsigned long mask;
 	unsigned long max_huge_pages;
 	unsigned long nr_huge_pages;
@@ -605,6 +619,7 @@ struct hstate {
 	unsigned long nr_overcommit_huge_pages;
 	struct list_head hugepage_activelist;
 	struct list_head hugepage_freelists[MAX_NUMNODES];
+	unsigned int max_huge_pages_node[MAX_NUMNODES];
 	unsigned int nr_huge_pages_node[MAX_NUMNODES];
 	unsigned int free_huge_pages_node[MAX_NUMNODES];
 	unsigned int surplus_huge_pages_node[MAX_NUMNODES];
@@ -613,8 +628,8 @@ struct hstate {
 #endif
 #ifdef CONFIG_CGROUP_HUGETLB
 	/* cgroup control files */
-	struct cftype cgroup_files_dfl[7];
-	struct cftype cgroup_files_legacy[9];
+	struct cftype cgroup_files_dfl[8];
+	struct cftype cgroup_files_legacy[10];
 #endif
 	char name[HSTATE_NAME_LEN];
 };
@@ -637,8 +652,9 @@ void restore_reserve_on_error(struct hstate *h, struct vm_area_struct *vma,
 				unsigned long address, struct page *page);
 
 /* arch callback */
-int __init __alloc_bootmem_huge_page(struct hstate *h);
-int __init alloc_bootmem_huge_page(struct hstate *h);
+int __init __alloc_bootmem_huge_page(struct hstate *h, int nid);
+int __init alloc_bootmem_huge_page(struct hstate *h, int nid);
+bool __init hugetlb_node_alloc_supported(void);
 
 void __init hugetlb_add_hstate(unsigned order);
 bool __init arch_hugetlb_valid_size(unsigned long size);
@@ -744,7 +760,7 @@ static inline void arch_clear_hugepage_flags(struct page *page) { }
 static inline pte_t arch_make_huge_pte(pte_t entry, unsigned int shift,
 				       vm_flags_t flags)
 {
-	return entry;
+	return pte_mkhuge(entry);
 }
 #endif
 
@@ -960,6 +976,11 @@ static inline struct hstate *page_hstate(struct page *page)
 	return NULL;
 }
 
+static inline struct hstate *size_to_hstate(unsigned long size)
+{
+	return NULL;
+}
+
 static inline unsigned long huge_page_size(struct hstate *h)
 {
 	return PAGE_SIZE;
@@ -1065,12 +1086,6 @@ static inline void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr
 }
 #endif	/* CONFIG_HUGETLB_PAGE */
 
-#ifdef CONFIG_HUGETLB_PAGE_FREE_VMEMMAP
-extern bool hugetlb_free_vmemmap_enabled;
-#else
-#define hugetlb_free_vmemmap_enabled	false
-#endif
-
 static inline spinlock_t *huge_pte_lock(struct hstate *h,
 					struct mm_struct *mm, pte_t *pte)
 {
diff --git a/include/linux/hugetlb_cgroup.h b/include/linux/hugetlb_cgroup.h
index c137396129db..379344828e78 100644
--- a/include/linux/hugetlb_cgroup.h
+++ b/include/linux/hugetlb_cgroup.h
@@ -36,6 +36,11 @@ enum hugetlb_memory_event {
 	HUGETLB_NR_MEMORY_EVENTS,
 };
 
+struct hugetlb_cgroup_per_node {
+	/* hugetlb usage in pages over all hstates. */
+	unsigned long usage[HUGE_MAX_HSTATE];
+};
+
 struct hugetlb_cgroup {
 	struct cgroup_subsys_state css;
 
@@ -57,6 +62,8 @@ struct hugetlb_cgroup {
 
 	/* Handle for "hugetlb.events.local" */
 	struct cgroup_file events_local_file[HUGE_MAX_HSTATE];
+
+	struct hugetlb_cgroup_per_node *nodeinfo[];
 };
 
 static inline struct hugetlb_cgroup *
@@ -128,6 +135,13 @@ static inline void resv_map_dup_hugetlb_cgroup_uncharge_info(
 		css_get(resv_map->css);
 }
 
+static inline void resv_map_put_hugetlb_cgroup_uncharge_info(
+						struct resv_map *resv_map)
+{
+	if (resv_map->css)
+		css_put(resv_map->css);
+}
+
 extern int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
 					struct hugetlb_cgroup **ptr);
 extern int hugetlb_cgroup_charge_cgroup_rsvd(int idx, unsigned long nr_pages,
@@ -211,6 +225,11 @@ static inline void resv_map_dup_hugetlb_cgroup_uncharge_info(
 {
 }
 
+static inline void resv_map_put_hugetlb_cgroup_uncharge_info(
+						struct resv_map *resv_map)
+{
+}
+
 static inline int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,
 					       struct hugetlb_cgroup **ptr)
 {
diff --git a/include/linux/hw_random.h b/include/linux/hw_random.h
index 8e6dd908da21..aa1d4da03538 100644
--- a/include/linux/hw_random.h
+++ b/include/linux/hw_random.h
@@ -60,7 +60,5 @@ extern int devm_hwrng_register(struct device *dev, struct hwrng *rng);
 /** Unregister a Hardware Random Number Generator driver. */
 extern void hwrng_unregister(struct hwrng *rng);
 extern void devm_hwrng_unregister(struct device *dve, struct hwrng *rng);
-/** Feed random bits into the pool. */
-extern void add_hwgenerator_randomness(const char *buffer, size_t count, size_t entropy);
 
 #endif /* LINUX_HWRANDOM_H_ */
diff --git a/include/linux/hwmon.h b/include/linux/hwmon.h
index 1e8d6ea8992e..eba380b76d15 100644
--- a/include/linux/hwmon.h
+++ b/include/linux/hwmon.h
@@ -332,12 +332,14 @@ enum hwmon_pwm_attributes {
 	hwmon_pwm_enable,
 	hwmon_pwm_mode,
 	hwmon_pwm_freq,
+	hwmon_pwm_auto_channels_temp,
 };
 
 #define HWMON_PWM_INPUT			BIT(hwmon_pwm_input)
 #define HWMON_PWM_ENABLE		BIT(hwmon_pwm_enable)
 #define HWMON_PWM_MODE			BIT(hwmon_pwm_mode)
 #define HWMON_PWM_FREQ			BIT(hwmon_pwm_freq)
+#define HWMON_PWM_AUTO_CHANNELS_TEMP	BIT(hwmon_pwm_auto_channels_temp)
 
 enum hwmon_intrusion_attributes {
 	hwmon_intrusion_alarm,
@@ -403,7 +405,7 @@ struct hwmon_ops {
 };
 
 /**
- * Channel information
+ * struct hwmon_channel_info - Channel information
  * @type:	Channel type.
  * @config:	Pointer to NULL-terminated list of channel parameters.
  *		Use for per-channel attributes.
@@ -422,7 +424,7 @@ struct hwmon_channel_info {
 	})
 
 /**
- * Chip configuration
+ * struct hwmon_chip_info - Chip configuration
  * @ops:	Pointer to hwmon operations.
  * @info:	Null-terminated list of channel information.
  */
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index ddc8713ce57b..fe2e0179ed51 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -803,6 +803,12 @@ struct vmbus_device {
 
 #define VMBUS_DEFAULT_MAX_PKT_SIZE 4096
 
+struct vmbus_gpadl {
+	u32 gpadl_handle;
+	u32 size;
+	void *buffer;
+};
+
 struct vmbus_channel {
 	struct list_head listentry;
 
@@ -822,7 +828,7 @@ struct vmbus_channel {
 	bool rescind_ref; /* got rescind msg, got channel reference */
 	struct completion rescind_event;
 
-	u32 ringbuffer_gpadlhandle;
+	struct vmbus_gpadl ringbuffer_gpadlhandle;
 
 	/* Allocated memory for ring buffer */
 	struct page *ringbuffer_page;
@@ -1100,19 +1106,6 @@ void vmbus_set_sc_create_callback(struct vmbus_channel *primary_channel,
 void vmbus_set_chn_rescind_callback(struct vmbus_channel *channel,
 		void (*chn_rescind_cb)(struct vmbus_channel *));
 
-/*
- * Check if sub-channels have already been offerred. This API will be useful
- * when the driver is unloaded after establishing sub-channels. In this case,
- * when the driver is re-loaded, the driver would have to check if the
- * subchannels have already been established before attempting to request
- * the creation of sub-channels.
- * This function returns TRUE to indicate that subchannels have already been
- * created.
- * This function should be invoked after setting the callback function for
- * sub-channel creation.
- */
-bool vmbus_are_subchannels_present(struct vmbus_channel *primary);
-
 /* The format must be the same as struct vmdata_gpa_direct */
 struct vmbus_channel_packet_page_buffer {
 	u16 type;
@@ -1192,10 +1185,10 @@ extern int vmbus_sendpacket_mpb_desc(struct vmbus_channel *channel,
 extern int vmbus_establish_gpadl(struct vmbus_channel *channel,
 				      void *kbuffer,
 				      u32 size,
-				      u32 *gpadl_handle);
+				      struct vmbus_gpadl *gpadl);
 
 extern int vmbus_teardown_gpadl(struct vmbus_channel *channel,
-				     u32 gpadl_handle);
+				     struct vmbus_gpadl *gpadl);
 
 void vmbus_reset_channel_cb(struct vmbus_channel *channel);
 
@@ -1268,6 +1261,8 @@ struct hv_device {
 
 	struct vmbus_channel *channel;
 	struct kset	     *channels_kset;
+	struct device_dma_parameters dma_parms;
+	u64 dma_mask;
 
 	/* place holder to keep track of the dir for hv device in debugfs */
 	struct dentry *debug_dir;
@@ -1590,6 +1585,11 @@ struct hyperv_service_callback {
 	void (*callback)(void *context);
 };
 
+struct hv_dma_range {
+	dma_addr_t dma;
+	u32 mapping_size;
+};
+
 #define MAX_SRV_VER	0x7ffffff
 extern bool vmbus_prep_negotiate_resp(struct icmsg_hdr *icmsghdrp, u8 *buf, u32 buflen,
 				const int *fw_version, int fw_vercnt,
diff --git a/include/linux/i2c-smbus.h b/include/linux/i2c-smbus.h
index 1ef421818d3a..ced1c6ead52a 100644
--- a/include/linux/i2c-smbus.h
+++ b/include/linux/i2c-smbus.h
@@ -30,14 +30,6 @@ struct i2c_client *i2c_new_smbus_alert_device(struct i2c_adapter *adapter,
 					      struct i2c_smbus_alert_setup *setup);
 int i2c_handle_smbus_alert(struct i2c_client *ara);
 
-#if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_OF)
-int of_i2c_setup_smbus_alert(struct i2c_adapter *adap);
-#else
-static inline int of_i2c_setup_smbus_alert(struct i2c_adapter *adap)
-{
-	return 0;
-}
-#endif
 #if IS_ENABLED(CONFIG_I2C_SMBUS) && IS_ENABLED(CONFIG_I2C_SLAVE)
 struct i2c_client *i2c_new_slave_host_notify_device(struct i2c_adapter *adapter);
 void i2c_free_slave_host_notify_device(struct i2c_client *client);
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 2ce3efbe9198..fbda5ada2afc 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -11,6 +11,7 @@
 #define _LINUX_I2C_H
 
 #include <linux/acpi.h>		/* for acpi_handle */
+#include <linux/bits.h>
 #include <linux/mod_devicetable.h>
 #include <linux/device.h>	/* for struct device */
 #include <linux/sched.h>	/* for completion */
@@ -223,6 +224,15 @@ enum i2c_alert_protocol {
 };
 
 /**
+ * enum i2c_driver_flags - Flags for an I2C device driver
+ *
+ * @I2C_DRV_ACPI_WAIVE_D0_PROBE: Don't put the device in D0 state for probe
+ */
+enum i2c_driver_flags {
+	I2C_DRV_ACPI_WAIVE_D0_PROBE = BIT(0),
+};
+
+/**
  * struct i2c_driver - represent an I2C device driver
  * @class: What kind of i2c device we instantiate (for detect)
  * @probe: Callback for device binding - soon to be deprecated
@@ -236,6 +246,7 @@ enum i2c_alert_protocol {
  * @detect: Callback for device detection
  * @address_list: The I2C addresses to probe (for detect)
  * @clients: List of detected clients we created (for i2c-core use only)
+ * @flags: A bitmask of flags defined in &enum i2c_driver_flags
  *
  * The driver.owner field should be set to the module owner of this driver.
  * The driver.name field should be set to the name of this driver.
@@ -294,6 +305,8 @@ struct i2c_driver {
 	int (*detect)(struct i2c_client *client, struct i2c_board_info *info);
 	const unsigned short *address_list;
 	struct list_head clients;
+
+	u32 flags;
 };
 #define to_i2c_driver(d) container_of(d, struct i2c_driver, driver)
 
@@ -379,12 +392,8 @@ enum i2c_slave_event {
 int i2c_slave_register(struct i2c_client *client, i2c_slave_cb_t slave_cb);
 int i2c_slave_unregister(struct i2c_client *client);
 bool i2c_detect_slave_mode(struct device *dev);
-
-static inline int i2c_slave_event(struct i2c_client *client,
-				  enum i2c_slave_event event, u8 *val)
-{
-	return client->slave_cb(client, event, val);
-}
+int i2c_slave_event(struct i2c_client *client,
+		    enum i2c_slave_event event, u8 *val);
 #else
 static inline bool i2c_detect_slave_mode(struct device *dev) { return false; }
 #endif
@@ -1012,9 +1021,11 @@ bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares,
 			       struct acpi_resource_i2c_serialbus **i2c);
 int i2c_acpi_client_count(struct acpi_device *adev);
 u32 i2c_acpi_find_bus_speed(struct device *dev);
-struct i2c_client *i2c_acpi_new_device(struct device *dev, int index,
-				       struct i2c_board_info *info);
+struct i2c_client *i2c_acpi_new_device_by_fwnode(struct fwnode_handle *fwnode,
+						 int index,
+						 struct i2c_board_info *info);
 struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle handle);
+bool i2c_acpi_waive_d0_probe(struct device *dev);
 #else
 static inline bool i2c_acpi_get_i2c_resource(struct acpi_resource *ares,
 					     struct acpi_resource_i2c_serialbus **i2c)
@@ -1029,8 +1040,9 @@ static inline u32 i2c_acpi_find_bus_speed(struct device *dev)
 {
 	return 0;
 }
-static inline struct i2c_client *i2c_acpi_new_device(struct device *dev,
-					int index, struct i2c_board_info *info)
+static inline struct i2c_client *i2c_acpi_new_device_by_fwnode(
+					struct fwnode_handle *fwnode, int index,
+					struct i2c_board_info *info)
 {
 	return ERR_PTR(-ENODEV);
 }
@@ -1038,6 +1050,17 @@ static inline struct i2c_adapter *i2c_acpi_find_adapter_by_handle(acpi_handle ha
 {
 	return NULL;
 }
+static inline bool i2c_acpi_waive_d0_probe(struct device *dev)
+{
+	return false;
+}
 #endif /* CONFIG_ACPI */
 
+static inline struct i2c_client *i2c_acpi_new_device(struct device *dev,
+						     int index,
+						     struct i2c_board_info *info)
+{
+	return i2c_acpi_new_device_by_fwnode(dev_fwnode(dev), index, info);
+}
+
 #endif /* _LINUX_I2C_H */
diff --git a/include/linux/i3c/ccc.h b/include/linux/i3c/ccc.h
index 73b0982cc519..ad59a4ae60d1 100644
--- a/include/linux/i3c/ccc.h
+++ b/include/linux/i3c/ccc.h
@@ -132,7 +132,7 @@ struct i3c_ccc_dev_desc {
 struct i3c_ccc_defslvs {
 	u8 count;
 	struct i3c_ccc_dev_desc master;
-	struct i3c_ccc_dev_desc slaves[0];
+	struct i3c_ccc_dev_desc slaves[];
 } __packed;
 
 /**
@@ -240,7 +240,7 @@ struct i3c_ccc_bridged_slave_desc {
  */
 struct i3c_ccc_setbrgtgt {
 	u8 count;
-	struct i3c_ccc_bridged_slave_desc bslaves[0];
+	struct i3c_ccc_bridged_slave_desc bslaves[];
 } __packed;
 
 /**
@@ -318,7 +318,7 @@ enum i3c_ccc_setxtime_subcmd {
  */
 struct i3c_ccc_setxtime {
 	u8 subcmd;
-	u8 data[0];
+	u8 data[];
 } __packed;
 
 #define I3C_CCC_GETXTIME_SYNC_MODE	BIT(0)
diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h
index 9cb39d901cd5..604a126b78c8 100644
--- a/include/linux/i3c/master.h
+++ b/include/linux/i3c/master.h
@@ -85,7 +85,6 @@ struct i2c_dev_boardinfo {
  */
 struct i2c_dev_desc {
 	struct i3c_i2c_dev_desc common;
-	const struct i2c_dev_boardinfo *boardinfo;
 	struct i2c_client *dev;
 	u16 addr;
 	u8 lvr;
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 694264503119..75d40acb60c1 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -9,7 +9,7 @@
  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
  * Copyright (c) 2013 - 2014 Intel Mobile Communications GmbH
  * Copyright (c) 2016 - 2017 Intel Deutschland GmbH
- * Copyright (c) 2018 - 2021 Intel Corporation
+ * Copyright (c) 2018 - 2022 Intel Corporation
  */
 
 #ifndef LINUX_IEEE80211_H
@@ -18,6 +18,7 @@
 #include <linux/types.h>
 #include <linux/if_ether.h>
 #include <linux/etherdevice.h>
+#include <linux/bitfield.h>
 #include <asm/byteorder.h>
 #include <asm/unaligned.h>
 
@@ -1023,6 +1024,8 @@ struct ieee80211_tpc_report_ie {
 #define IEEE80211_ADDBA_EXT_FRAG_LEVEL_MASK	GENMASK(2, 1)
 #define IEEE80211_ADDBA_EXT_FRAG_LEVEL_SHIFT	1
 #define IEEE80211_ADDBA_EXT_NO_FRAG		BIT(0)
+#define IEEE80211_ADDBA_EXT_BUF_SIZE_MASK	GENMASK(7, 5)
+#define IEEE80211_ADDBA_EXT_BUF_SIZE_SHIFT	10
 
 struct ieee80211_addba_ext_ie {
 	u8 data;
@@ -1143,7 +1146,7 @@ struct ieee80211_mgmt {
 			__le16 auth_transaction;
 			__le16 status_code;
 			/* possibly followed by Challenge text */
-			u8 variable[0];
+			u8 variable[];
 		} __packed auth;
 		struct {
 			__le16 reason_code;
@@ -1152,26 +1155,26 @@ struct ieee80211_mgmt {
 			__le16 capab_info;
 			__le16 listen_interval;
 			/* followed by SSID and Supported rates */
-			u8 variable[0];
+			u8 variable[];
 		} __packed assoc_req;
 		struct {
 			__le16 capab_info;
 			__le16 status_code;
 			__le16 aid;
 			/* followed by Supported rates */
-			u8 variable[0];
+			u8 variable[];
 		} __packed assoc_resp, reassoc_resp;
 		struct {
 			__le16 capab_info;
 			__le16 status_code;
-			u8 variable[0];
+			u8 variable[];
 		} __packed s1g_assoc_resp, s1g_reassoc_resp;
 		struct {
 			__le16 capab_info;
 			__le16 listen_interval;
 			u8 current_ap[ETH_ALEN];
 			/* followed by SSID and Supported rates */
-			u8 variable[0];
+			u8 variable[];
 		} __packed reassoc_req;
 		struct {
 			__le16 reason_code;
@@ -1182,11 +1185,11 @@ struct ieee80211_mgmt {
 			__le16 capab_info;
 			/* followed by some of SSID, Supported rates,
 			 * FH Params, DS Params, CF Params, IBSS Params, TIM */
-			u8 variable[0];
+			u8 variable[];
 		} __packed beacon;
 		struct {
 			/* only variable items: SSID, Supported rates */
-			u8 variable[0];
+			DECLARE_FLEX_ARRAY(u8, variable);
 		} __packed probe_req;
 		struct {
 			__le64 timestamp;
@@ -1194,7 +1197,7 @@ struct ieee80211_mgmt {
 			__le16 capab_info;
 			/* followed by some of SSID, Supported rates,
 			 * FH Params, DS Params, CF Params, IBSS Params */
-			u8 variable[0];
+			u8 variable[];
 		} __packed probe_resp;
 		struct {
 			u8 category;
@@ -1203,16 +1206,16 @@ struct ieee80211_mgmt {
 					u8 action_code;
 					u8 dialog_token;
 					u8 status_code;
-					u8 variable[0];
+					u8 variable[];
 				} __packed wme_action;
 				struct{
 					u8 action_code;
-					u8 variable[0];
+					u8 variable[];
 				} __packed chan_switch;
 				struct{
 					u8 action_code;
 					struct ieee80211_ext_chansw_ie data;
-					u8 variable[0];
+					u8 variable[];
 				} __packed ext_chan_switch;
 				struct{
 					u8 action_code;
@@ -1228,7 +1231,7 @@ struct ieee80211_mgmt {
 					__le16 timeout;
 					__le16 start_seq_num;
 					/* followed by BA Extension */
-					u8 variable[0];
+					u8 variable[];
 				} __packed addba_req;
 				struct{
 					u8 action_code;
@@ -1244,11 +1247,11 @@ struct ieee80211_mgmt {
 				} __packed delba;
 				struct {
 					u8 action_code;
-					u8 variable[0];
+					u8 variable[];
 				} __packed self_prot;
 				struct{
 					u8 action_code;
-					u8 variable[0];
+					u8 variable[];
 				} __packed mesh_action;
 				struct {
 					u8 action;
@@ -1292,7 +1295,7 @@ struct ieee80211_mgmt {
 					u8 toa[6];
 					__le16 tod_error;
 					__le16 toa_error;
-					u8 variable[0];
+					u8 variable[];
 				} __packed ftm;
 				struct {
 					u8 action_code;
@@ -1697,10 +1700,12 @@ struct ieee80211_ht_operation {
  * A-MPDU buffer sizes
  * According to HT size varies from 8 to 64 frames
  * HE adds the ability to have up to 256 frames.
+ * EHT adds the ability to have up to 1K frames.
  */
 #define IEEE80211_MIN_AMPDU_BUF		0x8
 #define IEEE80211_MAX_AMPDU_BUF_HT	0x40
-#define IEEE80211_MAX_AMPDU_BUF		0x100
+#define IEEE80211_MAX_AMPDU_BUF_HE	0x100
+#define IEEE80211_MAX_AMPDU_BUF_EHT	0x400
 
 
 /* Spatial Multiplexing Power Save Modes (for capability) */
@@ -1925,6 +1930,111 @@ struct ieee80211_mu_edca_param_set {
 	struct ieee80211_he_mu_edca_param_ac_rec ac_vo;
 } __packed;
 
+#define IEEE80211_EHT_MCS_NSS_RX 0x0f
+#define IEEE80211_EHT_MCS_NSS_TX 0xf0
+
+/**
+ * struct ieee80211_eht_mcs_nss_supp_20mhz_only - EHT 20MHz only station max
+ * supported NSS for per MCS.
+ *
+ * For each field below, bits 0 - 3 indicate the maximal number of spatial
+ * streams for Rx, and bits 4 - 7 indicate the maximal number of spatial streams
+ * for Tx.
+ *
+ * @rx_tx_mcs7_max_nss: indicates the maximum number of spatial streams
+ *     supported for reception and the maximum number of spatial streams
+ *     supported for transmission for MCS 0 - 7.
+ * @rx_tx_mcs9_max_nss: indicates the maximum number of spatial streams
+ *     supported for reception and the maximum number of spatial streams
+ *     supported for transmission for MCS 8 - 9.
+ * @rx_tx_mcs11_max_nss: indicates the maximum number of spatial streams
+ *     supported for reception and the maximum number of spatial streams
+ *     supported for transmission for MCS 10 - 11.
+ * @rx_tx_mcs13_max_nss: indicates the maximum number of spatial streams
+ *     supported for reception and the maximum number of spatial streams
+ *     supported for transmission for MCS 12 - 13.
+ */
+struct ieee80211_eht_mcs_nss_supp_20mhz_only {
+	u8 rx_tx_mcs7_max_nss;
+	u8 rx_tx_mcs9_max_nss;
+	u8 rx_tx_mcs11_max_nss;
+	u8 rx_tx_mcs13_max_nss;
+};
+
+/**
+ * struct ieee80211_eht_mcs_nss_supp_bw - EHT max supported NSS per MCS (except
+ * 20MHz only stations).
+ *
+ * For each field below, bits 0 - 3 indicate the maximal number of spatial
+ * streams for Rx, and bits 4 - 7 indicate the maximal number of spatial streams
+ * for Tx.
+ *
+ * @rx_tx_mcs9_max_nss: indicates the maximum number of spatial streams
+ *     supported for reception and the maximum number of spatial streams
+ *     supported for transmission for MCS 0 - 9.
+ * @rx_tx_mcs11_max_nss: indicates the maximum number of spatial streams
+ *     supported for reception and the maximum number of spatial streams
+ *     supported for transmission for MCS 10 - 11.
+ * @rx_tx_mcs13_max_nss: indicates the maximum number of spatial streams
+ *     supported for reception and the maximum number of spatial streams
+ *     supported for transmission for MCS 12 - 13.
+ */
+struct ieee80211_eht_mcs_nss_supp_bw {
+	u8 rx_tx_mcs9_max_nss;
+	u8 rx_tx_mcs11_max_nss;
+	u8 rx_tx_mcs13_max_nss;
+};
+
+/**
+ * struct ieee80211_eht_cap_elem_fixed - EHT capabilities fixed data
+ *
+ * This structure is the "EHT Capabilities element" fixed fields as
+ * described in P802.11be_D1.4 section 9.4.2.313.
+ *
+ * @mac_cap_info: MAC capabilities, see IEEE80211_EHT_MAC_CAP*
+ * @phy_cap_info: PHY capabilities, see IEEE80211_EHT_PHY_CAP*
+ */
+struct ieee80211_eht_cap_elem_fixed {
+	u8 mac_cap_info[2];
+	u8 phy_cap_info[9];
+} __packed;
+
+/**
+ * struct ieee80211_eht_cap_elem - EHT capabilities element
+ * @fixed: fixed parts, see &ieee80211_eht_cap_elem_fixed
+ * @optional: optional parts
+ */
+struct ieee80211_eht_cap_elem {
+	struct ieee80211_eht_cap_elem_fixed fixed;
+
+	/*
+	 * Followed by:
+	 * Supported EHT-MCS And NSS Set field: 4, 3, 6 or 9 octets.
+	 * EHT PPE Thresholds field: variable length.
+	 */
+	u8 optional[];
+} __packed;
+
+/**
+ * struct ieee80211_eht_operation - eht operation element
+ *
+ * This structure is the "EHT Operation Element" fields as
+ * described in P802.11be_D1.4 section 9.4.2.311
+ *
+ * FIXME: The spec is unclear how big the fields are, and doesn't
+ *	  indicate the "Disabled Subchannel Bitmap Present" in the
+ *	  structure (Figure 9-1002a) at all ...
+ */
+struct ieee80211_eht_operation {
+	u8 chan_width;
+	u8 ccfs;
+	u8 present_bm;
+
+	u8 disable_subchannel_bitmap[];
+} __packed;
+
+#define IEEE80211_EHT_OPER_DISABLED_SUBCHANNEL_BITMAP_PRESENT	0x1
+
 /* 802.11ac VHT Capabilities */
 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895			0x00000000
 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991			0x00000001
@@ -1988,6 +2098,44 @@ int ieee80211_get_vht_max_nss(struct ieee80211_vht_cap *cap,
 			      int mcs, bool ext_nss_bw_capable,
 			      unsigned int max_vht_nss);
 
+/**
+ * enum ieee80211_ap_reg_power - regulatory power for a Access Point
+ *
+ * @IEEE80211_REG_UNSET_AP: Access Point has no regulatory power mode
+ * @IEEE80211_REG_LPI: Indoor Access Point
+ * @IEEE80211_REG_SP: Standard power Access Point
+ * @IEEE80211_REG_VLP: Very low power Access Point
+ * @IEEE80211_REG_AP_POWER_AFTER_LAST: internal
+ * @IEEE80211_REG_AP_POWER_MAX: maximum value
+ */
+enum ieee80211_ap_reg_power {
+	IEEE80211_REG_UNSET_AP,
+	IEEE80211_REG_LPI_AP,
+	IEEE80211_REG_SP_AP,
+	IEEE80211_REG_VLP_AP,
+	IEEE80211_REG_AP_POWER_AFTER_LAST,
+	IEEE80211_REG_AP_POWER_MAX =
+		IEEE80211_REG_AP_POWER_AFTER_LAST - 1,
+};
+
+/**
+ * enum ieee80211_client_reg_power - regulatory power for a client
+ *
+ * @IEEE80211_REG_UNSET_CLIENT: Client has no regulatory power mode
+ * @IEEE80211_REG_DEFAULT_CLIENT: Default Client
+ * @IEEE80211_REG_SUBORDINATE_CLIENT: Subordinate Client
+ * @IEEE80211_REG_CLIENT_POWER_AFTER_LAST: internal
+ * @IEEE80211_REG_CLIENT_POWER_MAX: maximum value
+ */
+enum ieee80211_client_reg_power {
+	IEEE80211_REG_UNSET_CLIENT,
+	IEEE80211_REG_DEFAULT_CLIENT,
+	IEEE80211_REG_SUBORDINATE_CLIENT,
+	IEEE80211_REG_CLIENT_POWER_AFTER_LAST,
+	IEEE80211_REG_CLIENT_POWER_MAX =
+		IEEE80211_REG_CLIENT_POWER_AFTER_LAST - 1,
+};
+
 /* 802.11ax HE MAC capabilities */
 #define IEEE80211_HE_MAC_CAP0_HTC_HE				0x01
 #define IEEE80211_HE_MAC_CAP0_TWT_REQ				0x02
@@ -2084,12 +2232,15 @@ int ieee80211_get_vht_max_nss(struct ieee80211_vht_cap *cap,
 
 #define IEEE80211_HE_VHT_MAX_AMPDU_FACTOR	20
 #define IEEE80211_HE_HT_MAX_AMPDU_FACTOR	16
+#define IEEE80211_HE_6GHZ_MAX_AMPDU_FACTOR	13
 
 /* 802.11ax HE PHY capabilities */
 #define IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G		0x02
 #define IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G	0x04
 #define IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G		0x08
 #define IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G	0x10
+#define IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL		0x1e
+
 #define IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_RU_MAPPING_IN_2G	0x20
 #define IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G	0x40
 #define IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK			0xfe
@@ -2219,11 +2370,12 @@ int ieee80211_get_vht_max_nss(struct ieee80211_vht_cap *cap,
 #define IEEE80211_HE_PHY_CAP9_RX_1024_QAM_LESS_THAN_242_TONE_RU		0x08
 #define IEEE80211_HE_PHY_CAP9_RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB	0x10
 #define IEEE80211_HE_PHY_CAP9_RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB	0x20
-#define IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_0US			0x00
-#define IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_8US			0x40
-#define IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_16US			0x80
-#define IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_RESERVED		0xc0
-#define IEEE80211_HE_PHY_CAP9_NOMIMAL_PKT_PADDING_MASK			0xc0
+#define IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US			0x0
+#define IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US			0x1
+#define IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US			0x2
+#define IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_RESERVED		0x3
+#define IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_POS			6
+#define IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK			0xc0
 
 #define IEEE80211_HE_PHY_CAP10_HE_MU_M1RU_MAX_LTF			0x01
 
@@ -2269,6 +2421,7 @@ ieee80211_he_mcs_nss_size(const struct ieee80211_he_cap_elem *he_cap)
 #define IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK		0x78
 #define IEEE80211_PPE_THRES_RU_INDEX_BITMASK_POS		(3)
 #define IEEE80211_PPE_THRES_INFO_PPET_SIZE			(3)
+#define IEEE80211_HE_PPE_THRES_INFO_HEADER_SIZE			(7)
 
 /*
  * Calculate 802.11ax HE capabilities IE PPE field size
@@ -2298,6 +2451,29 @@ ieee80211_he_ppe_size(u8 ppe_thres_hdr, const u8 *phy_cap_info)
 	return n;
 }
 
+static inline bool ieee80211_he_capa_size_ok(const u8 *data, u8 len)
+{
+	const struct ieee80211_he_cap_elem *he_cap_ie_elem = (const void *)data;
+	u8 needed = sizeof(*he_cap_ie_elem);
+
+	if (len < needed)
+		return false;
+
+	needed += ieee80211_he_mcs_nss_size(he_cap_ie_elem);
+	if (len < needed)
+		return false;
+
+	if (he_cap_ie_elem->phy_cap_info[6] &
+			IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
+		if (len < needed + 1)
+			return false;
+		needed += ieee80211_he_ppe_size(data[needed],
+						he_cap_ie_elem->phy_cap_info);
+	}
+
+	return len >= needed;
+}
+
 /* HE Operation defines */
 #define IEEE80211_HE_OPERATION_DFLT_PE_DURATION_MASK		0x00000007
 #define IEEE80211_HE_OPERATION_TWT_REQUIRED			0x00000008
@@ -2387,7 +2563,7 @@ struct ieee80211_tx_pwr_env {
 static inline u8
 ieee80211_he_oper_size(const u8 *he_oper_ie)
 {
-	struct ieee80211_he_operation *he_oper = (void *)he_oper_ie;
+	const struct ieee80211_he_operation *he_oper = (const void *)he_oper_ie;
 	u8 oper_len = sizeof(struct ieee80211_he_operation);
 	u32 he_oper_params;
 
@@ -2420,7 +2596,7 @@ ieee80211_he_oper_size(const u8 *he_oper_ie)
 static inline const struct ieee80211_he_6ghz_oper *
 ieee80211_he_6ghz_oper(const struct ieee80211_he_operation *he_oper)
 {
-	const u8 *ret = (void *)&he_oper->optional;
+	const u8 *ret = (const void *)&he_oper->optional;
 	u32 he_oper_params;
 
 	if (!he_oper)
@@ -2435,7 +2611,7 @@ ieee80211_he_6ghz_oper(const struct ieee80211_he_operation *he_oper)
 	if (he_oper_params & IEEE80211_HE_OPERATION_CO_HOSTED_BSS)
 		ret++;
 
-	return (void *)ret;
+	return (const void *)ret;
 }
 
 /* HE Spatial Reuse defines */
@@ -2456,7 +2632,7 @@ ieee80211_he_6ghz_oper(const struct ieee80211_he_operation *he_oper)
 static inline u8
 ieee80211_he_spr_size(const u8 *he_spr_ie)
 {
-	struct ieee80211_he_spr *he_spr = (void *)he_spr_ie;
+	const struct ieee80211_he_spr *he_spr = (const void *)he_spr_ie;
 	u8 spr_len = sizeof(struct ieee80211_he_spr);
 	u8 he_spr_params;
 
@@ -2559,6 +2735,194 @@ ieee80211_he_spr_size(const u8 *he_spr_ie)
 #define S1G_OPER_CH_WIDTH_PRIMARY_1MHZ	BIT(0)
 #define S1G_OPER_CH_WIDTH_OPER		GENMASK(4, 1)
 
+/* EHT MAC capabilities as defined in P802.11be_D1.4 section 9.4.2.313.2 */
+#define IEEE80211_EHT_MAC_CAP0_NSEP_PRIO_ACCESS			0x01
+#define IEEE80211_EHT_MAC_CAP0_OM_CONTROL			0x02
+#define IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1		0x04
+#define IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE2		0x08
+#define IEEE80211_EHT_MAC_CAP0_RESTRICTED_TWT			0x10
+#define IEEE80211_EHT_MAC_CAP0_SCS_TRAFFIC_DESC			0x20
+#define IEEE80211_EHT_MAC_CAP0_MAX_AMPDU_LEN_MASK		0xc0
+#define		IEEE80211_EHT_MAC_CAP0_MAX_AMPDU_LEN_3895	0
+#define		IEEE80211_EHT_MAC_CAP0_MAX_AMPDU_LEN_7991	1
+#define		IEEE80211_EHT_MAC_CAP0_MAX_AMPDU_LEN_11454	2
+
+/* EHT PHY capabilities as defined in P802.11be_D1.4 section 9.4.2.313.3 */
+#define IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ			0x02
+#define IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ		0x04
+#define IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI		0x08
+#define IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO		0x10
+#define IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER			0x20
+#define IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE			0x40
+
+/* EHT beamformee number of spatial streams <= 80MHz is split */
+#define IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK		0x80
+#define IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK		0x03
+
+#define IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK	0x1c
+#define IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK	0xe0
+
+#define IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK		0x07
+#define IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK		0x38
+
+/* EHT number of sounding dimensions for 320MHz is split */
+#define IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK		0xc0
+#define IEEE80211_EHT_PHY_CAP3_SOUNDING_DIM_320MHZ_MASK		0x01
+#define IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK		0x02
+#define IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK		0x04
+#define IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK		0x08
+#define IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK		0x10
+#define IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK			0x20
+#define IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK		0x40
+#define IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK			0x80
+
+#define IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO		0x01
+#define IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP			0x02
+#define IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP		0x04
+#define IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI	0x08
+#define IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK			0xf0
+
+#define IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK		0x01
+#define IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP		0x02
+#define IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP		0x04
+#define IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT		0x08
+#define IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK	0x30
+#define   IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_0US	0
+#define   IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_8US	1
+#define   IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_16US	2
+#define   IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_20US	3
+
+/* Maximum number of supported EHT LTF is split */
+#define IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK	0xc0
+#define IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK	0x07
+
+#define IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK			0x78
+#define IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP		0x80
+
+#define IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW	0x01
+#define IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ	0x02
+#define IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ	0x04
+#define IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ	0x08
+#define IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ		0x10
+#define IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ		0x20
+#define IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ		0x40
+#define IEEE80211_EHT_PHY_CAP7_TB_SOUNDING_FDBK_RATE_LIMIT	0x80
+
+#define IEEE80211_EHT_PHY_CAP8_RX_1024QAM_WIDER_BW_DL_OFDMA	0x01
+#define IEEE80211_EHT_PHY_CAP8_RX_4096QAM_WIDER_BW_DL_OFDMA	0x02
+
+/*
+ * EHT operation channel width as defined in P802.11be_D1.4 section 9.4.2.311
+ */
+#define IEEE80211_EHT_OPER_CHAN_WIDTH		0x7
+#define IEEE80211_EHT_OPER_CHAN_WIDTH_20MHZ	0
+#define IEEE80211_EHT_OPER_CHAN_WIDTH_40MHZ	1
+#define IEEE80211_EHT_OPER_CHAN_WIDTH_80MHZ	2
+#define IEEE80211_EHT_OPER_CHAN_WIDTH_160MHZ	3
+#define IEEE80211_EHT_OPER_CHAN_WIDTH_320MHZ	4
+
+/* Calculate 802.11be EHT capabilities IE Tx/Rx EHT MCS NSS Support Field size */
+static inline u8
+ieee80211_eht_mcs_nss_size(const struct ieee80211_he_cap_elem *he_cap,
+			   const struct ieee80211_eht_cap_elem_fixed *eht_cap)
+{
+	u8 count = 0;
+
+	/* on 2.4 GHz, if it supports 40 MHz, the result is 3 */
+	if (he_cap->phy_cap_info[0] &
+	    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G)
+		return 3;
+
+	/* on 2.4 GHz, these three bits are reserved, so should be 0 */
+	if (he_cap->phy_cap_info[0] &
+	    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G)
+		count += 3;
+
+	if (he_cap->phy_cap_info[0] &
+	    IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)
+		count += 3;
+
+	if (eht_cap->phy_cap_info[0] & IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ)
+		count += 3;
+
+	return count ? count : 4;
+}
+
+/* 802.11be EHT PPE Thresholds */
+#define IEEE80211_EHT_PPE_THRES_NSS_POS			0
+#define IEEE80211_EHT_PPE_THRES_NSS_MASK		0xf
+#define IEEE80211_EHT_PPE_THRES_RU_INDEX_BITMASK_MASK	0x1f0
+#define IEEE80211_EHT_PPE_THRES_INFO_PPET_SIZE		3
+#define IEEE80211_EHT_PPE_THRES_INFO_HEADER_SIZE	9
+
+/*
+ * Calculate 802.11be EHT capabilities IE EHT field size
+ */
+static inline u8
+ieee80211_eht_ppe_size(u16 ppe_thres_hdr, const u8 *phy_cap_info)
+{
+	u32 n;
+
+	if (!(phy_cap_info[5] &
+	      IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT))
+		return 0;
+
+	n = hweight16(ppe_thres_hdr &
+		      IEEE80211_EHT_PPE_THRES_RU_INDEX_BITMASK_MASK);
+	n *= 1 + u16_get_bits(ppe_thres_hdr, IEEE80211_EHT_PPE_THRES_NSS_MASK);
+
+	/*
+	 * Each pair is 6 bits, and we need to add the 9 "header" bits to the
+	 * total size.
+	 */
+	n = n * IEEE80211_EHT_PPE_THRES_INFO_PPET_SIZE * 2 +
+	    IEEE80211_EHT_PPE_THRES_INFO_HEADER_SIZE;
+	return DIV_ROUND_UP(n, 8);
+}
+
+static inline bool
+ieee80211_eht_capa_size_ok(const u8 *he_capa, const u8 *data, u8 len)
+{
+	const struct ieee80211_eht_cap_elem_fixed *elem = (const void *)data;
+	u8 needed = sizeof(struct ieee80211_eht_cap_elem_fixed);
+
+	if (len < needed || !he_capa)
+		return false;
+
+	needed += ieee80211_eht_mcs_nss_size((const void *)he_capa,
+					     (const void *)data);
+	if (len < needed)
+		return false;
+
+	if (elem->phy_cap_info[5] &
+			IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT) {
+		u16 ppe_thres_hdr;
+
+		if (len < needed + sizeof(ppe_thres_hdr))
+			return false;
+
+		ppe_thres_hdr = get_unaligned_le16(data + needed);
+		needed += ieee80211_eht_ppe_size(ppe_thres_hdr,
+						 elem->phy_cap_info);
+	}
+
+	return len >= needed;
+}
+
+static inline bool
+ieee80211_eht_oper_size_ok(const u8 *data, u8 len)
+{
+	const struct ieee80211_eht_operation *elem = (const void *)data;
+	u8 needed = sizeof(*elem);
+
+	if (len < needed)
+		return false;
+
+	if (elem->present_bm & IEEE80211_EHT_OPER_DISABLED_SUBCHANNEL_BITMAP_PRESENT)
+		needed += 2;
+
+	return len >= needed;
+}
 
 #define LISTEN_INT_USF	GENMASK(15, 14)
 #define LISTEN_INT_UI	GENMASK(13, 0)
@@ -3014,6 +3378,9 @@ enum ieee80211_eid_ext {
 	WLAN_EID_EXT_SHORT_SSID_LIST = 58,
 	WLAN_EID_EXT_HE_6GHZ_CAPA = 59,
 	WLAN_EID_EXT_UL_MU_POWER_CAPA = 60,
+	WLAN_EID_EXT_EHT_OPERATION = 106,
+	WLAN_EID_EXT_EHT_MULTI_LINK = 107,
+	WLAN_EID_EXT_EHT_CAPABILITY = 108,
 };
 
 /* Action category code */
@@ -3965,10 +4332,10 @@ static inline bool for_each_element_completed(const struct element *element,
 #define IEEE80211_RNR_TBTT_PARAMS_COLOC_AP			0x40
 
 struct ieee80211_neighbor_ap_info {
-       u8 tbtt_info_hdr;
-       u8 tbtt_info_len;
-       u8 op_class;
-       u8 channel;
+	u8 tbtt_info_hdr;
+	u8 tbtt_info_len;
+	u8 op_class;
+	u8 channel;
 } __packed;
 
 enum ieee80211_range_params_max_total_ltf {
diff --git a/include/linux/if_arp.h b/include/linux/if_arp.h
index b712217f7030..1ed52441972f 100644
--- a/include/linux/if_arp.h
+++ b/include/linux/if_arp.h
@@ -52,6 +52,7 @@ static inline bool dev_is_mac_header_xmit(const struct net_device *dev)
 	case ARPHRD_VOID:
 	case ARPHRD_NONE:
 	case ARPHRD_RAWIP:
+	case ARPHRD_PIMREG:
 		return false;
 	default:
 		return true;
diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h
index 509e18c7e740..d62ef428e3aa 100644
--- a/include/linux/if_bridge.h
+++ b/include/linux/if_bridge.h
@@ -58,6 +58,7 @@ struct br_ip_list {
 #define BR_MRP_LOST_CONT	BIT(18)
 #define BR_MRP_LOST_IN_CONT	BIT(19)
 #define BR_TX_FWD_OFFLOAD	BIT(20)
+#define BR_PORT_LOCKED		BIT(21)
 
 #define BR_DEFAULT_AGEING_TIME	(300 * HZ)
 
@@ -118,6 +119,9 @@ int br_vlan_get_info(const struct net_device *dev, u16 vid,
 		     struct bridge_vlan_info *p_vinfo);
 int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
 			 struct bridge_vlan_info *p_vinfo);
+bool br_mst_enabled(const struct net_device *dev);
+int br_mst_get_info(const struct net_device *dev, u16 msti, unsigned long *vids);
+int br_mst_get_state(const struct net_device *dev, u16 msti, u8 *state);
 #else
 static inline bool br_vlan_enabled(const struct net_device *dev)
 {
@@ -150,6 +154,22 @@ static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
 {
 	return -EINVAL;
 }
+
+static inline bool br_mst_enabled(const struct net_device *dev)
+{
+	return false;
+}
+
+static inline int br_mst_get_info(const struct net_device *dev, u16 msti,
+				  unsigned long *vids)
+{
+	return -EINVAL;
+}
+static inline int br_mst_get_state(const struct net_device *dev, u16 msti,
+				   u8 *state)
+{
+	return -EINVAL;
+}
 #endif
 
 #if IS_ENABLED(CONFIG_BRIDGE)
diff --git a/include/linux/if_eql.h b/include/linux/if_eql.h
index d984694c384d..d75601d613cc 100644
--- a/include/linux/if_eql.h
+++ b/include/linux/if_eql.h
@@ -26,6 +26,7 @@
 typedef struct slave {
 	struct list_head	list;
 	struct net_device	*dev;
+	netdevice_tracker	dev_tracker;
 	long			priority;
 	long			priority_bps;
 	long			priority_Bps;
diff --git a/include/linux/if_hsr.h b/include/linux/if_hsr.h
index 38bbc537d4e4..408539d5ea5f 100644
--- a/include/linux/if_hsr.h
+++ b/include/linux/if_hsr.h
@@ -9,6 +9,22 @@ enum hsr_version {
 	PRP_V1,
 };
 
+/* HSR Tag.
+ * As defined in IEC-62439-3:2010, the HSR tag is really { ethertype = 0x88FB,
+ * path, LSDU_size, sequence Nr }. But we let eth_header() create { h_dest,
+ * h_source, h_proto = 0x88FB }, and add { path, LSDU_size, sequence Nr,
+ * encapsulated protocol } instead.
+ *
+ * Field names as defined in the IEC:2010 standard for HSR.
+ */
+struct hsr_tag {
+	__be16		path_and_LSDU_size;
+	__be16		sequence_nr;
+	__be16		encap_proto;
+} __packed;
+
+#define HSR_HLEN	6
+
 #if IS_ENABLED(CONFIG_HSR)
 extern bool is_hsr_master(struct net_device *dev);
 extern int hsr_get_version(struct net_device *dev, enum hsr_version *ver);
diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h
index 10c94a3936ca..b42294739063 100644
--- a/include/linux/if_macvlan.h
+++ b/include/linux/if_macvlan.h
@@ -21,6 +21,7 @@ struct macvlan_dev {
 	struct hlist_node	hlist;
 	struct macvlan_port	*port;
 	struct net_device	*lowerdev;
+	netdevice_tracker	dev_tracker;
 	void			*accel_priv;
 	struct vlan_pcpu_stats __percpu *pcpu_stats;
 
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 41a518336673..2be4dd7e90a9 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -46,8 +46,10 @@ struct vlan_hdr {
  *	@h_vlan_encapsulated_proto: packet type ID or len
  */
 struct vlan_ethhdr {
-	unsigned char	h_dest[ETH_ALEN];
-	unsigned char	h_source[ETH_ALEN];
+	struct_group(addrs,
+		unsigned char	h_dest[ETH_ALEN];
+		unsigned char	h_source[ETH_ALEN];
+	);
 	__be16		h_vlan_proto;
 	__be16		h_vlan_TCI;
 	__be16		h_vlan_encapsulated_proto;
@@ -162,6 +164,7 @@ struct netpoll;
  *	@vlan_id: VLAN identifier
  *	@flags: device flags
  *	@real_dev: underlying netdevice
+ *	@dev_tracker: refcount tracker for @real_dev reference
  *	@real_dev_addr: address of underlying netdevice
  *	@dent: proc dir entry
  *	@vlan_pcpu_stats: ptr to percpu rx stats
@@ -177,6 +180,8 @@ struct vlan_dev_priv {
 	u16					flags;
 
 	struct net_device			*real_dev;
+	netdevice_tracker			dev_tracker;
+
 	unsigned char				real_dev_addr[ETH_ALEN];
 
 	struct proc_dir_entry			*dent;
diff --git a/include/linux/iio/adc/qcom-vadc-common.h b/include/linux/iio/adc/qcom-vadc-common.h
index 33f60f43e1aa..ce78d4804994 100644
--- a/include/linux/iio/adc/qcom-vadc-common.h
+++ b/include/linux/iio/adc/qcom-vadc-common.h
@@ -6,6 +6,7 @@
 #ifndef QCOM_VADC_COMMON_H
 #define QCOM_VADC_COMMON_H
 
+#include <linux/math.h>
 #include <linux/types.h>
 
 #define VADC_CONV_TIME_MIN_US			2000
@@ -80,16 +81,6 @@ struct vadc_linear_graph {
 };
 
 /**
- * struct vadc_prescale_ratio - Represent scaling ratio for ADC input.
- * @num: the inverse numerator of the gain applied to the input channel.
- * @den: the inverse denominator of the gain applied to the input channel.
- */
-struct vadc_prescale_ratio {
-	u32 num;
-	u32 den;
-};
-
-/**
  * enum vadc_scale_fn_type - Scaling function to convert ADC code to
  *				physical scaled units for the channel.
  * SCALE_DEFAULT: Default scaling to convert raw adc code to voltage (uV).
@@ -144,12 +135,12 @@ struct adc5_data {
 
 int qcom_vadc_scale(enum vadc_scale_fn_type scaletype,
 		    const struct vadc_linear_graph *calib_graph,
-		    const struct vadc_prescale_ratio *prescale,
+		    const struct u32_fract *prescale,
 		    bool absolute,
 		    u16 adc_code, int *result_mdec);
 
 struct qcom_adc5_scale_type {
-	int (*scale_fn)(const struct vadc_prescale_ratio *prescale,
+	int (*scale_fn)(const struct u32_fract *prescale,
 		const struct adc5_data *data, u16 adc_code, int *result);
 };
 
diff --git a/include/linux/iio/afe/rescale.h b/include/linux/iio/afe/rescale.h
new file mode 100644
index 000000000000..6eecb435488f
--- /dev/null
+++ b/include/linux/iio/afe/rescale.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2018 Axentia Technologies AB
+ */
+
+#ifndef __IIO_RESCALE_H__
+#define __IIO_RESCALE_H__
+
+#include <linux/types.h>
+#include <linux/iio/iio.h>
+
+struct device;
+struct rescale;
+
+struct rescale_cfg {
+	enum iio_chan_type type;
+	int (*props)(struct device *dev, struct rescale *rescale);
+};
+
+struct rescale {
+	const struct rescale_cfg *cfg;
+	struct iio_channel *source;
+	struct iio_chan_spec chan;
+	struct iio_chan_spec_ext_info *ext_info;
+	bool chan_processed;
+	s32 numerator;
+	s32 denominator;
+	s32 offset;
+};
+
+int rescale_process_scale(struct rescale *rescale, int scale_type,
+			  int *val, int *val2);
+int rescale_process_offset(struct rescale *rescale, int scale_type,
+			   int scale, int scale2, int schan_off,
+			   int *val, int *val2);
+#endif /* __IIO_RESCALE_H__ */
diff --git a/include/linux/iio/buffer-dma.h b/include/linux/iio/buffer-dma.h
index ff15c61bf319..6564bdcdac66 100644
--- a/include/linux/iio/buffer-dma.h
+++ b/include/linux/iio/buffer-dma.h
@@ -17,11 +17,6 @@ struct iio_dma_buffer_queue;
 struct iio_dma_buffer_ops;
 struct device;
 
-struct iio_buffer_block {
-	u32 size;
-	u32 bytes_used;
-};
-
 /**
  * enum iio_block_state - State of a struct iio_dma_buffer_block
  * @IIO_BLOCK_STATE_DEQUEUED: Block is not queued
diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
index b6928ac5c63d..418b1307d3f2 100644
--- a/include/linux/iio/buffer.h
+++ b/include/linux/iio/buffer.h
@@ -11,8 +11,15 @@
 
 struct iio_buffer;
 
+enum iio_buffer_direction {
+	IIO_BUFFER_DIRECTION_IN,
+	IIO_BUFFER_DIRECTION_OUT,
+};
+
 int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data);
 
+int iio_pop_from_buffer(struct iio_buffer *buffer, void *data);
+
 /**
  * iio_push_to_buffers_with_timestamp() - push data and timestamp to buffers
  * @indio_dev:		iio_dev structure for device.
@@ -38,6 +45,10 @@ static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev,
 	return iio_push_to_buffers(indio_dev, data);
 }
 
+int iio_push_to_buffers_with_ts_unaligned(struct iio_dev *indio_dev,
+					  const void *data, size_t data_sz,
+					  int64_t timestamp);
+
 bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
 				   const unsigned long *mask);
 
diff --git a/include/linux/iio/buffer_impl.h b/include/linux/iio/buffer_impl.h
index 245b32918ae1..e2ca8ea23e19 100644
--- a/include/linux/iio/buffer_impl.h
+++ b/include/linux/iio/buffer_impl.h
@@ -7,6 +7,7 @@
 #ifdef CONFIG_IIO_BUFFER
 
 #include <uapi/linux/iio/buffer.h>
+#include <linux/iio/buffer.h>
 
 struct iio_dev;
 struct iio_buffer;
@@ -23,6 +24,10 @@ struct iio_buffer;
  * @read:		try to get a specified number of bytes (must exist)
  * @data_available:	indicates how much data is available for reading from
  *			the buffer.
+ * @remove_from:	remove scan from buffer. Drivers should calls this to
+ *			remove a scan from a buffer.
+ * @write:		try to write a number of bytes
+ * @space_available:	returns the amount of bytes available in a buffer
  * @request_update:	if a parameter change has been marked, update underlying
  *			storage.
  * @set_bytes_per_datum:set number of bytes per datum
@@ -49,6 +54,9 @@ struct iio_buffer_access_funcs {
 	int (*store_to)(struct iio_buffer *buffer, const void *data);
 	int (*read)(struct iio_buffer *buffer, size_t n, char __user *buf);
 	size_t (*data_available)(struct iio_buffer *buffer);
+	int (*remove_from)(struct iio_buffer *buffer, void *data);
+	int (*write)(struct iio_buffer *buffer, size_t n, const char __user *buf);
+	size_t (*space_available)(struct iio_buffer *buffer);
 
 	int (*request_update)(struct iio_buffer *buffer);
 
@@ -80,6 +88,9 @@ struct iio_buffer {
 	/**  @bytes_per_datum: Size of individual datum including timestamp. */
 	size_t bytes_per_datum;
 
+	/* @direction: Direction of the data stream (in/out). */
+	enum iio_buffer_direction direction;
+
 	/**
 	 * @access: Buffer access functions associated with the
 	 * implementation.
diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h
index 8bdbaf3f3796..22f67845cdd3 100644
--- a/include/linux/iio/common/st_sensors.h
+++ b/include/linux/iio/common/st_sensors.h
@@ -220,7 +220,6 @@ struct st_sensor_settings {
 
 /**
  * struct st_sensor_data - ST sensor device status
- * @dev: Pointer to instance of struct device (I2C or SPI).
  * @trig: The trigger in use by the core driver.
  * @mount_matrix: The mounting matrix of the sensor.
  * @sensor_settings: Pointer to the specific sensor settings in use.
@@ -240,7 +239,6 @@ struct st_sensor_settings {
  * @buffer_data: Data used by buffer part.
  */
 struct st_sensor_data {
-	struct device *dev;
 	struct iio_trigger *trig;
 	struct iio_mount_matrix mount_matrix;
 	struct st_sensor_settings *sensor_settings;
@@ -273,7 +271,6 @@ irqreturn_t st_sensors_trigger_handler(int irq, void *p);
 int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 				const struct iio_trigger_ops *trigger_ops);
 
-void st_sensors_deallocate_trigger(struct iio_dev *indio_dev);
 int st_sensors_validate_device(struct iio_trigger *trig,
 			       struct iio_dev *indio_dev);
 #else
@@ -282,10 +279,6 @@ static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 {
 	return 0;
 }
-static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
-{
-	return;
-}
 #define st_sensors_validate_device NULL
 #endif
 
@@ -298,8 +291,6 @@ int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable);
 
 int st_sensors_power_enable(struct iio_dev *indio_dev);
 
-void st_sensors_power_disable(struct iio_dev *indio_dev);
-
 int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
 				  unsigned reg, unsigned writeval,
 				  unsigned *readval);
@@ -330,21 +321,17 @@ void st_sensors_dev_name_probe(struct device *dev, char *name, int len);
 /* Accelerometer */
 const struct st_sensor_settings *st_accel_get_settings(const char *name);
 int st_accel_common_probe(struct iio_dev *indio_dev);
-void st_accel_common_remove(struct iio_dev *indio_dev);
 
 /* Gyroscope */
 const struct st_sensor_settings *st_gyro_get_settings(const char *name);
 int st_gyro_common_probe(struct iio_dev *indio_dev);
-void st_gyro_common_remove(struct iio_dev *indio_dev);
 
 /* Magnetometer */
 const struct st_sensor_settings *st_magn_get_settings(const char *name);
 int st_magn_common_probe(struct iio_dev *indio_dev);
-void st_magn_common_remove(struct iio_dev *indio_dev);
 
 /* Pressure */
 const struct st_sensor_settings *st_press_get_settings(const char *name);
 int st_press_common_probe(struct iio_dev *indio_dev);
-void st_press_common_remove(struct iio_dev *indio_dev);
 
 #endif /* ST_SENSORS_H */
diff --git a/include/linux/iio/driver.h b/include/linux/iio/driver.h
index 36de60a5da7a..7a157ed218f6 100644
--- a/include/linux/iio/driver.h
+++ b/include/linux/iio/driver.h
@@ -8,6 +8,7 @@
 #ifndef _IIO_INKERN_H_
 #define _IIO_INKERN_H_
 
+struct device;
 struct iio_dev;
 struct iio_map;
 
@@ -26,4 +27,17 @@ int iio_map_array_register(struct iio_dev *indio_dev,
  */
 int iio_map_array_unregister(struct iio_dev *indio_dev);
 
+/**
+ * devm_iio_map_array_register - device-managed version of iio_map_array_register
+ * @dev:	Device object to which to bind the unwinding of this registration
+ * @indio_dev:	Pointer to the iio_dev structure
+ * @maps:	Pointer to an IIO map object which is to be registered to this IIO device
+ *
+ * This function will call iio_map_array_register() to register an IIO map object
+ * and will also hook a callback to the iio_map_array_unregister() function to
+ * handle de-registration of the IIO map object when the device's refcount goes to
+ * zero.
+ */
+int devm_iio_map_array_register(struct device *dev, struct iio_dev *indio_dev, struct iio_map *maps);
+
 #endif
diff --git a/include/linux/iio/iio-opaque.h b/include/linux/iio/iio-opaque.h
index c9504e9da571..2be12b7b5dc5 100644
--- a/include/linux/iio/iio-opaque.h
+++ b/include/linux/iio/iio-opaque.h
@@ -23,6 +23,8 @@
  * @groupcounter:		index of next attribute group
  * @legacy_scan_el_group:	attribute group for legacy scan elements attribute group
  * @legacy_buffer_group:	attribute group for legacy buffer attributes group
+ * @bounce_buffer:		for devices that call iio_push_to_buffers_with_timestamp_unaligned()
+ * @bounce_buffer_size:		size of currently allocate bounce buffer
  * @scan_index_timestamp:	cache of the index to the timestamp
  * @clock_id:			timestamping clock posix identifier
  * @chrdev:			associated character device
@@ -50,6 +52,8 @@ struct iio_dev_opaque {
 	int				groupcounter;
 	struct attribute_group		legacy_scan_el_group;
 	struct attribute_group		legacy_buffer_group;
+	void				*bounce_buffer;
+	size_t				bounce_buffer_size;
 
 	unsigned int			scan_index_timestamp;
 	clockid_t			clock_id;
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 324561b7a5e8..faf00f2c0be6 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -103,15 +103,16 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev,
 /**
  * IIO_ENUM_AVAILABLE() - Initialize enum available extended channel attribute
  * @_name:	Attribute name ("_available" will be appended to the name)
+ * @_shared:	Whether the attribute is shared between all channels
  * @_e:		Pointer to an iio_enum struct
  *
  * Creates a read only attribute which lists all the available enum items in a
  * space separated list. This should usually be used together with IIO_ENUM()
  */
-#define IIO_ENUM_AVAILABLE(_name, _e) \
+#define IIO_ENUM_AVAILABLE(_name, _shared, _e) \
 { \
 	.name = (_name "_available"), \
-	.shared = IIO_SHARED_BY_TYPE, \
+	.shared = _shared, \
 	.read = iio_enum_available_read, \
 	.private = (uintptr_t)(_e), \
 }
@@ -488,7 +489,7 @@ struct iio_buffer_setup_ops {
 /**
  * struct iio_dev - industrial I/O device
  * @modes:		[DRIVER] operating modes supported by device
- * @currentmode:	[DRIVER] current operating mode
+ * @currentmode:	[INTERN] current operating mode
  * @dev:		[DRIVER] device structure, should be assigned a parent
  *			and owner
  * @buffer:		[DRIVER] any buffer present
diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
index cf49997d5903..515ca09764fe 100644
--- a/include/linux/iio/imu/adis.h
+++ b/include/linux/iio/imu/adis.h
@@ -32,6 +32,7 @@ struct adis_timeout {
 	u16 sw_reset_ms;
 	u16 self_test_ms;
 };
+
 /**
  * struct adis_data - ADIS chip variant specific data
  * @read_delay: SPI delay for read operations in us
@@ -45,10 +46,11 @@ struct adis_timeout {
  * @self_test_mask: Bitmask of supported self-test operations
  * @self_test_reg: Register address to request self test command
  * @self_test_no_autoclear: True if device's self-test needs clear of ctrl reg
- * @status_error_msgs: Array of error messgaes
+ * @status_error_msgs: Array of error messages
  * @status_error_mask: Bitmask of errors supported by the device
  * @timeouts: Chip specific delays
  * @enable_irq: Hook for ADIS devices that have a special IRQ enable/disable
+ * @unmasked_drdy: True for devices that cannot mask/unmask the data ready pin
  * @has_paging: True if ADIS device has paged registers
  * @burst_reg_cmd:	Register command that triggers burst
  * @burst_len:		Burst size in the SPI RX buffer. If @burst_max_len is defined,
@@ -78,6 +80,7 @@ struct adis_data {
 	unsigned int status_error_mask;
 
 	int (*enable_irq)(struct adis *adis, bool enable);
+	bool unmasked_drdy;
 
 	bool has_paging;
 
@@ -128,12 +131,12 @@ struct adis {
 	unsigned long		irq_flag;
 	void			*buffer;
 
-	uint8_t			tx[10] ____cacheline_aligned;
-	uint8_t			rx[4];
+	u8			tx[10] ____cacheline_aligned;
+	u8			rx[4];
 };
 
 int adis_init(struct adis *adis, struct iio_dev *indio_dev,
-	struct spi_device *spi, const struct adis_data *data);
+	      struct spi_device *spi, const struct adis_data *data);
 int __adis_reset(struct adis *adis);
 
 /**
@@ -154,9 +157,9 @@ static inline int adis_reset(struct adis *adis)
 }
 
 int __adis_write_reg(struct adis *adis, unsigned int reg,
-	unsigned int val, unsigned int size);
+		     unsigned int val, unsigned int size);
 int __adis_read_reg(struct adis *adis, unsigned int reg,
-	unsigned int *val, unsigned int size);
+		    unsigned int *val, unsigned int size);
 
 /**
  * __adis_write_reg_8() - Write single byte to a register (unlocked)
@@ -165,7 +168,7 @@ int __adis_read_reg(struct adis *adis, unsigned int reg,
  * @value: The value to write
  */
 static inline int __adis_write_reg_8(struct adis *adis, unsigned int reg,
-	uint8_t val)
+				     u8 val)
 {
 	return __adis_write_reg(adis, reg, val, 1);
 }
@@ -177,7 +180,7 @@ static inline int __adis_write_reg_8(struct adis *adis, unsigned int reg,
  * @value: Value to be written
  */
 static inline int __adis_write_reg_16(struct adis *adis, unsigned int reg,
-	uint16_t val)
+				      u16 val)
 {
 	return __adis_write_reg(adis, reg, val, 2);
 }
@@ -189,7 +192,7 @@ static inline int __adis_write_reg_16(struct adis *adis, unsigned int reg,
  * @value: Value to be written
  */
 static inline int __adis_write_reg_32(struct adis *adis, unsigned int reg,
-	uint32_t val)
+				      u32 val)
 {
 	return __adis_write_reg(adis, reg, val, 4);
 }
@@ -201,7 +204,7 @@ static inline int __adis_write_reg_32(struct adis *adis, unsigned int reg,
  * @val: The value read back from the device
  */
 static inline int __adis_read_reg_16(struct adis *adis, unsigned int reg,
-	uint16_t *val)
+				     u16 *val)
 {
 	unsigned int tmp;
 	int ret;
@@ -220,7 +223,7 @@ static inline int __adis_read_reg_16(struct adis *adis, unsigned int reg,
  * @val: The value read back from the device
  */
 static inline int __adis_read_reg_32(struct adis *adis, unsigned int reg,
-	uint32_t *val)
+				     u32 *val)
 {
 	unsigned int tmp;
 	int ret;
@@ -240,7 +243,7 @@ static inline int __adis_read_reg_32(struct adis *adis, unsigned int reg,
  * @size: The size of the @value (in bytes)
  */
 static inline int adis_write_reg(struct adis *adis, unsigned int reg,
-	unsigned int val, unsigned int size)
+				 unsigned int val, unsigned int size)
 {
 	int ret;
 
@@ -259,7 +262,7 @@ static inline int adis_write_reg(struct adis *adis, unsigned int reg,
  * @size: The size of the @val buffer
  */
 static int adis_read_reg(struct adis *adis, unsigned int reg,
-	unsigned int *val, unsigned int size)
+			 unsigned int *val, unsigned int size)
 {
 	int ret;
 
@@ -277,7 +280,7 @@ static int adis_read_reg(struct adis *adis, unsigned int reg,
  * @value: The value to write
  */
 static inline int adis_write_reg_8(struct adis *adis, unsigned int reg,
-	uint8_t val)
+				   u8 val)
 {
 	return adis_write_reg(adis, reg, val, 1);
 }
@@ -289,7 +292,7 @@ static inline int adis_write_reg_8(struct adis *adis, unsigned int reg,
  * @value: Value to be written
  */
 static inline int adis_write_reg_16(struct adis *adis, unsigned int reg,
-	uint16_t val)
+				    u16 val)
 {
 	return adis_write_reg(adis, reg, val, 2);
 }
@@ -301,7 +304,7 @@ static inline int adis_write_reg_16(struct adis *adis, unsigned int reg,
  * @value: Value to be written
  */
 static inline int adis_write_reg_32(struct adis *adis, unsigned int reg,
-	uint32_t val)
+				    u32 val)
 {
 	return adis_write_reg(adis, reg, val, 4);
 }
@@ -313,7 +316,7 @@ static inline int adis_write_reg_32(struct adis *adis, unsigned int reg,
  * @val: The value read back from the device
  */
 static inline int adis_read_reg_16(struct adis *adis, unsigned int reg,
-	uint16_t *val)
+				   u16 *val)
 {
 	unsigned int tmp;
 	int ret;
@@ -332,7 +335,7 @@ static inline int adis_read_reg_16(struct adis *adis, unsigned int reg,
  * @val: The value read back from the device
  */
 static inline int adis_read_reg_32(struct adis *adis, unsigned int reg,
-	uint32_t *val)
+				   u32 *val)
 {
 	unsigned int tmp;
 	int ret;
@@ -379,10 +382,8 @@ static inline int adis_update_bits_base(struct adis *adis, unsigned int reg,
  * @val can lead to undesired behavior if the register to update is 16bit.
  */
 #define adis_update_bits(adis, reg, mask, val) ({			\
-	BUILD_BUG_ON(sizeof(val) == 1 || sizeof(val) == 8);		\
-	__builtin_choose_expr(sizeof(val) == 4,				\
-		adis_update_bits_base(adis, reg, mask, val, 4),         \
-		adis_update_bits_base(adis, reg, mask, val, 2));	\
+	BUILD_BUG_ON(sizeof(val) != 2 && sizeof(val) != 4);		\
+	adis_update_bits_base(adis, reg, mask, val, sizeof(val));	\
 })
 
 /**
@@ -397,10 +398,8 @@ static inline int adis_update_bits_base(struct adis *adis, unsigned int reg,
  * @val can lead to undesired behavior if the register to update is 16bit.
  */
 #define __adis_update_bits(adis, reg, mask, val) ({			\
-	BUILD_BUG_ON(sizeof(val) == 1 || sizeof(val) == 8);		\
-	__builtin_choose_expr(sizeof(val) == 4,				\
-		__adis_update_bits_base(adis, reg, mask, val, 4),	\
-		__adis_update_bits_base(adis, reg, mask, val, 2));	\
+	BUILD_BUG_ON(sizeof(val) != 2 && sizeof(val) != 4);		\
+	__adis_update_bits_base(adis, reg, mask, val, sizeof(val));	\
 })
 
 int adis_enable_irq(struct adis *adis, bool enable);
@@ -441,8 +440,8 @@ static inline void adis_dev_unlock(struct adis *adis)
 }
 
 int adis_single_conversion(struct iio_dev *indio_dev,
-	const struct iio_chan_spec *chan, unsigned int error_mask,
-	int *val);
+			   const struct iio_chan_spec *chan,
+			   unsigned int error_mask, int *val);
 
 #define ADIS_VOLTAGE_CHAN(addr, si, chan, name, info_all, bits) { \
 	.type = IIO_VOLTAGE, \
@@ -491,7 +490,7 @@ int adis_single_conversion(struct iio_dev *indio_dev,
 	.modified = 1, \
 	.channel2 = IIO_MOD_ ## mod, \
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
-		 info_sep, \
+		 (info_sep), \
 	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
 	.info_mask_shared_by_all = info_all, \
 	.address = (addr), \
@@ -525,7 +524,7 @@ devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
 int devm_adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev);
 
 int adis_update_scan_mode(struct iio_dev *indio_dev,
-	const unsigned long *scan_mask);
+			  const unsigned long *scan_mask);
 
 #else /* CONFIG_IIO_BUFFER */
 
@@ -549,7 +548,8 @@ static inline int devm_adis_probe_trigger(struct adis *adis,
 #ifdef CONFIG_DEBUG_FS
 
 int adis_debugfs_reg_access(struct iio_dev *indio_dev,
-	unsigned int reg, unsigned int writeval, unsigned int *readval);
+			    unsigned int reg, unsigned int writeval,
+			    unsigned int *readval);
 
 #else
 
diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h
index 096f68dd2e0c..4c69b144677b 100644
--- a/include/linux/iio/trigger.h
+++ b/include/linux/iio/trigger.h
@@ -55,6 +55,7 @@ struct iio_trigger_ops {
  * @attached_own_device:[INTERN] if we are using our own device as trigger,
  *			i.e. if we registered a poll function to the same
  *			device as the one providing the trigger.
+ * @reenable_work:	[INTERN] work item used to ensure reenable can sleep.
  **/
 struct iio_trigger {
 	const struct iio_trigger_ops	*ops;
@@ -74,6 +75,7 @@ struct iio_trigger {
 	unsigned long pool[BITS_TO_LONGS(CONFIG_IIO_CONSUMERS_PER_TRIGGER)];
 	struct mutex			pool_lock;
 	bool				attached_own_device;
+	struct work_struct		reenable_work;
 };
 
 
diff --git a/include/linux/iio/triggered_buffer.h b/include/linux/iio/triggered_buffer.h
index 7f154d1f8739..7490b05fc5b2 100644
--- a/include/linux/iio/triggered_buffer.h
+++ b/include/linux/iio/triggered_buffer.h
@@ -2,6 +2,7 @@
 #ifndef _LINUX_IIO_TRIGGERED_BUFFER_H_
 #define _LINUX_IIO_TRIGGERED_BUFFER_H_
 
+#include <linux/iio/buffer.h>
 #include <linux/interrupt.h>
 
 struct attribute;
@@ -11,21 +12,27 @@ struct iio_buffer_setup_ops;
 int iio_triggered_buffer_setup_ext(struct iio_dev *indio_dev,
 	irqreturn_t (*h)(int irq, void *p),
 	irqreturn_t (*thread)(int irq, void *p),
+	enum iio_buffer_direction direction,
 	const struct iio_buffer_setup_ops *setup_ops,
 	const struct attribute **buffer_attrs);
 void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev);
 
 #define iio_triggered_buffer_setup(indio_dev, h, thread, setup_ops)		\
-	iio_triggered_buffer_setup_ext((indio_dev), (h), (thread), (setup_ops), NULL)
+	iio_triggered_buffer_setup_ext((indio_dev), (h), (thread),		\
+					IIO_BUFFER_DIRECTION_IN, (setup_ops),	\
+					NULL)
 
 int devm_iio_triggered_buffer_setup_ext(struct device *dev,
 					struct iio_dev *indio_dev,
 					irqreturn_t (*h)(int irq, void *p),
 					irqreturn_t (*thread)(int irq, void *p),
+					enum iio_buffer_direction direction,
 					const struct iio_buffer_setup_ops *ops,
 					const struct attribute **buffer_attrs);
 
 #define devm_iio_triggered_buffer_setup(dev, indio_dev, h, thread, setup_ops)	\
-	devm_iio_triggered_buffer_setup_ext((dev), (indio_dev), (h), (thread), (setup_ops), NULL)
+	devm_iio_triggered_buffer_setup_ext((dev), (indio_dev), (h), (thread),	\
+					    IIO_BUFFER_DIRECTION_IN,		\
+					    (setup_ops), NULL)
 
 #endif
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
index 84b3f8175cc6..a7aa91f3a8dc 100644
--- a/include/linux/iio/types.h
+++ b/include/linux/iio/types.h
@@ -24,6 +24,7 @@ enum iio_event_info {
 #define IIO_VAL_INT_PLUS_NANO 3
 #define IIO_VAL_INT_PLUS_MICRO_DB 4
 #define IIO_VAL_INT_MULTIPLE 5
+#define IIO_VAL_INT_64 6 /* 64-bit data, val is lower 32 bits */
 #define IIO_VAL_FRACTIONAL 10
 #define IIO_VAL_FRACTIONAL_LOG2 11
 #define IIO_VAL_CHAR 12
diff --git a/include/linux/ima.h b/include/linux/ima.h
index b6ab66a546ae..426b1744215e 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -50,21 +50,6 @@ static inline void ima_appraise_parse_cmdline(void) {}
 extern void ima_add_kexec_buffer(struct kimage *image);
 #endif
 
-#ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
-extern bool arch_ima_get_secureboot(void);
-extern const char * const *arch_get_ima_policy(void);
-#else
-static inline bool arch_ima_get_secureboot(void)
-{
-	return false;
-}
-
-static inline const char * const *arch_get_ima_policy(void)
-{
-	return NULL;
-}
-#endif
-
 #else
 static inline enum hash_algo ima_get_current_hash_algo(void)
 {
@@ -155,6 +140,21 @@ static inline int ima_measure_critical_data(const char *event_label,
 
 #endif /* CONFIG_IMA */
 
+#ifdef CONFIG_IMA_SECURE_AND_OR_TRUSTED_BOOT
+extern bool arch_ima_get_secureboot(void);
+extern const char * const *arch_get_ima_policy(void);
+#else
+static inline bool arch_ima_get_secureboot(void)
+{
+	return false;
+}
+
+static inline const char * const *arch_get_ima_policy(void)
+{
+	return NULL;
+}
+#endif
+
 #ifndef CONFIG_IMA_KEXEC
 struct kimage;
 
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index a038feb63f23..ead323243e7b 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -24,6 +24,8 @@ struct ipv4_devconf {
 
 struct in_device {
 	struct net_device	*dev;
+	netdevice_tracker	dev_tracker;
+
 	refcount_t		refcnt;
 	int			dead;
 	struct in_ifaddr	__rcu *ifa_list;/* IP ifaddr chain		*/
@@ -133,6 +135,8 @@ static inline void ipv4_devconf_setall(struct in_device *in_dev)
 #define IN_DEV_ARP_ANNOUNCE(in_dev)	IN_DEV_MAXCONF((in_dev), ARP_ANNOUNCE)
 #define IN_DEV_ARP_IGNORE(in_dev)	IN_DEV_MAXCONF((in_dev), ARP_IGNORE)
 #define IN_DEV_ARP_NOTIFY(in_dev)	IN_DEV_MAXCONF((in_dev), ARP_NOTIFY)
+#define IN_DEV_ARP_EVICT_NOCARRIER(in_dev) IN_DEV_ANDCONF((in_dev), \
+							  ARP_EVICT_NOCARRIER)
 
 struct in_ifaddr {
 	struct hlist_node	hash;
@@ -146,6 +150,7 @@ struct in_ifaddr {
 	__be32			ifa_broadcast;
 	unsigned char		ifa_scope;
 	unsigned char		ifa_prefixlen;
+	unsigned char		ifa_proto;
 	__u32			ifa_flags;
 	char			ifa_label[IFNAMSIZ];
 
diff --git a/include/linux/init.h b/include/linux/init.h
index d82b4b2e1d25..baf0b29a7010 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -320,12 +320,19 @@ struct obs_kernel_param {
 		__aligned(__alignof__(struct obs_kernel_param))		\
 		= { __setup_str_##unique_id, fn, early }
 
+/*
+ * NOTE: __setup functions return values:
+ * @fn returns 1 (or non-zero) if the option argument is "handled"
+ * and returns 0 if the option argument is "not handled".
+ */
 #define __setup(str, fn)						\
 	__setup_param(str, fn, fn, 0)
 
 /*
- * NOTE: fn is as per module_param, not __setup!
- * Emits warning if fn returns non-zero.
+ * NOTE: @fn is as per module_param, not __setup!
+ * I.e., @fn returns 0 for no error or non-zero for error
+ * (possibly @fn returns a -errno value, but it does not matter).
+ * Emits warning if @fn returns non-zero.
  */
 #define early_param(str, fn)						\
 	__setup_param(str, fn, fn, 1)
diff --git a/include/linux/inotify.h b/include/linux/inotify.h
index 6a24905f6e1e..8d20caa1b268 100644
--- a/include/linux/inotify.h
+++ b/include/linux/inotify.h
@@ -7,11 +7,8 @@
 #ifndef _LINUX_INOTIFY_H
 #define _LINUX_INOTIFY_H
 
-#include <linux/sysctl.h>
 #include <uapi/linux/inotify.h>
 
-extern struct ctl_table inotify_table[]; /* for sysctl */
-
 #define ALL_INOTIFY_BITS (IN_ACCESS | IN_MODIFY | IN_ATTRIB | IN_CLOSE_WRITE | \
 			  IN_CLOSE_NOWRITE | IN_OPEN | IN_MOVED_FROM | \
 			  IN_MOVED_TO | IN_CREATE | IN_DELETE | \
diff --git a/include/linux/input.h b/include/linux/input.h
index 0354b298d874..49790c1bd2c4 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -475,6 +475,8 @@ static inline void input_set_events_per_packet(struct input_dev *dev, int n_even
 void input_alloc_absinfo(struct input_dev *dev);
 void input_set_abs_params(struct input_dev *dev, unsigned int axis,
 			  int min, int max, int fuzz, int flat);
+void input_copy_abs(struct input_dev *dst, unsigned int dst_axis,
+		    const struct input_dev *src, unsigned int src_axis);
 
 #define INPUT_GENERATE_ABS_ACCESSORS(_suffix, _item)			\
 static inline int input_abs_get_##_suffix(struct input_dev *dev,	\
diff --git a/include/linux/input/cy8ctmg110_pdata.h b/include/linux/input/cy8ctmg110_pdata.h
deleted file mode 100644
index ee1d44545f30..000000000000
--- a/include/linux/input/cy8ctmg110_pdata.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_CY8CTMG110_PDATA_H
-#define _LINUX_CY8CTMG110_PDATA_H
-
-struct cy8ctmg110_pdata
-{
-	int reset_pin;		/* Reset pin is wired to this GPIO (optional) */
-};
-
-#endif
diff --git a/include/linux/input/vivaldi-fmap.h b/include/linux/input/vivaldi-fmap.h
new file mode 100644
index 000000000000..7e4b7023bf04
--- /dev/null
+++ b/include/linux/input/vivaldi-fmap.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _VIVALDI_FMAP_H
+#define _VIVALDI_FMAP_H
+
+#include <linux/types.h>
+
+#define VIVALDI_MAX_FUNCTION_ROW_KEYS	24
+
+/**
+ * struct vivaldi_data - Function row map data for ChromeOS Vivaldi keyboards
+ * @function_row_physmap: An array of scancodes or their equivalent (HID usage
+ *                        codes, encoded rows/columns, etc) for the top
+ *                        row function keys, in an order from left to right
+ * @num_function_row_keys: The number of top row keys in a custom keyboard
+ *
+ * This structure is supposed to be used by ChromeOS keyboards using
+ * the Vivaldi keyboard function row design.
+ */
+struct vivaldi_data {
+	u32 function_row_physmap[VIVALDI_MAX_FUNCTION_ROW_KEYS];
+	unsigned int num_function_row_keys;
+};
+
+ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data,
+					  char *buf);
+
+#endif /* _VIVALDI_FMAP_H */
diff --git a/include/linux/instruction_pointer.h b/include/linux/instruction_pointer.h
new file mode 100644
index 000000000000..cda1f706eaeb
--- /dev/null
+++ b/include/linux/instruction_pointer.h
@@ -0,0 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_INSTRUCTION_POINTER_H
+#define _LINUX_INSTRUCTION_POINTER_H
+
+#define _RET_IP_		(unsigned long)__builtin_return_address(0)
+#define _THIS_IP_  ({ __label__ __here; __here: (unsigned long)&&__here; })
+
+#endif /* _LINUX_INSTRUCTION_POINTER_H */
diff --git a/include/linux/instrumentation.h b/include/linux/instrumentation.h
index fa2cd8c63dcc..24359b4a9605 100644
--- a/include/linux/instrumentation.h
+++ b/include/linux/instrumentation.h
@@ -11,7 +11,7 @@
 	asm volatile(__stringify(c) ": nop\n\t"				\
 		     ".pushsection .discard.instr_begin\n\t"		\
 		     ".long " __stringify(c) "b - .\n\t"		\
-		     ".popsection\n\t");				\
+		     ".popsection\n\t" : : "i" (c));			\
 })
 #define instrumentation_begin() __instrumentation_begin(__COUNTER__)
 
@@ -50,7 +50,7 @@
 	asm volatile(__stringify(c) ": nop\n\t"				\
 		     ".pushsection .discard.instr_end\n\t"		\
 		     ".long " __stringify(c) "b - .\n\t"		\
-		     ".popsection\n\t");				\
+		     ".popsection\n\t" : : "i" (c));			\
 })
 #define instrumentation_end() __instrumentation_end(__COUNTER__)
 #else
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 05a65eb155f7..2f9891cb3d00 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -517,9 +517,6 @@ struct context_entry {
 	u64 hi;
 };
 
-/* si_domain contains mulitple devices */
-#define DOMAIN_FLAG_STATIC_IDENTITY		BIT(0)
-
 /*
  * When VT-d works in the scalable mode, it allows DMA translation to
  * happen through either first level or second level page table. This
@@ -528,12 +525,6 @@ struct context_entry {
  */
 #define DOMAIN_FLAG_USE_FIRST_LEVEL		BIT(1)
 
-/*
- * Domain represents a virtual machine which demands iommu nested
- * translation mode support.
- */
-#define DOMAIN_FLAG_NESTING_MODE		BIT(2)
-
 struct dmar_domain {
 	int	nid;			/* node id */
 
@@ -551,7 +542,6 @@ struct dmar_domain {
 	u8 iommu_snooping: 1;		/* indicate snooping control feature */
 
 	struct list_head devices;	/* all devices' list */
-	struct list_head subdevices;	/* all subdevices' list */
 	struct iova_domain iovad;	/* iova's that belong to this domain */
 
 	struct dma_pte	*pgd;		/* virtual address */
@@ -566,11 +556,6 @@ struct dmar_domain {
 					   2 == 1GiB, 3 == 512GiB, 4 == 1TiB */
 	u64		max_addr;	/* maximum mapped address */
 
-	u32		default_pasid;	/*
-					 * The default pasid used for non-SVM
-					 * traffic on mediated devices.
-					 */
-
 	struct iommu_domain domain;	/* generic domain data structure for
 					   iommu core */
 };
@@ -593,7 +578,6 @@ struct intel_iommu {
 
 #ifdef CONFIG_INTEL_IOMMU
 	unsigned long 	*domain_ids; /* bitmap of domains */
-	struct dmar_domain ***domains; /* ptr to domains */
 	spinlock_t	lock; /* protect context, domain ids */
 	struct root_entry *root_entry; /* virtual address */
 
@@ -623,21 +607,11 @@ struct intel_iommu {
 	void *perf_statistic;
 };
 
-/* Per subdevice private data */
-struct subdev_domain_info {
-	struct list_head link_phys;	/* link to phys device siblings */
-	struct list_head link_domain;	/* link to domain siblings */
-	struct device *pdev;		/* physical device derived from */
-	struct dmar_domain *domain;	/* aux-domain */
-	int users;			/* user count */
-};
-
 /* PCI domain-device relationship */
 struct device_domain_info {
 	struct list_head link;	/* link to domain siblings */
 	struct list_head global; /* link to global list */
 	struct list_head table;	/* link to pasid table */
-	struct list_head subdevices; /* subdevices sibling */
 	u32 segment;		/* PCI segment number */
 	u8 bus;			/* PCI bus number */
 	u8 devfn;		/* PCI devfn number */
@@ -648,7 +622,6 @@ struct device_domain_info {
 	u8 pri_enabled:1;
 	u8 ats_supported:1;
 	u8 ats_enabled:1;
-	u8 auxd_enabled:1;	/* Multiple domains per device */
 	u8 ats_qdep;
 	struct device *dev; /* it's NULL for PCIe-to-PCI bridge */
 	struct intel_iommu *iommu; /* IOMMU used by this device */
@@ -708,13 +681,18 @@ static inline bool dma_pte_superpage(struct dma_pte *pte)
 	return (pte->val & DMA_PTE_LARGE_PAGE);
 }
 
-static inline int first_pte_in_page(struct dma_pte *pte)
+static inline bool first_pte_in_page(struct dma_pte *pte)
 {
-	return !((unsigned long)pte & ~VTD_PAGE_MASK);
+	return IS_ALIGNED((unsigned long)pte, VTD_PAGE_SIZE);
+}
+
+static inline int nr_pte_to_next_page(struct dma_pte *pte)
+{
+	return first_pte_in_page(pte) ? BIT_ULL(VTD_STRIDE_SHIFT) :
+		(struct dma_pte *)ALIGN((unsigned long)pte, VTD_PAGE_SIZE) - pte;
 }
 
 extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev);
-extern int dmar_find_matched_atsr_unit(struct pci_dev *dev);
 
 extern int dmar_enable_qi(struct intel_iommu *iommu);
 extern void dmar_disable_qi(struct intel_iommu *iommu);
@@ -754,17 +732,12 @@ int for_each_device_domain(int (*fn)(struct device_domain_info *info,
 				     void *data), void *data);
 void iommu_flush_write_buffer(struct intel_iommu *iommu);
 int intel_iommu_enable_pasid(struct intel_iommu *iommu, struct device *dev);
-struct dmar_domain *find_domain(struct device *dev);
-struct device_domain_info *get_domain_info(struct device *dev);
 struct intel_iommu *device_to_iommu(struct device *dev, u8 *bus, u8 *devfn);
 
 #ifdef CONFIG_INTEL_IOMMU_SVM
 extern void intel_svm_check(struct intel_iommu *iommu);
 extern int intel_svm_enable_prq(struct intel_iommu *iommu);
 extern int intel_svm_finish_prq(struct intel_iommu *iommu);
-int intel_svm_bind_gpasid(struct iommu_domain *domain, struct device *dev,
-			  struct iommu_gpasid_bind_data *data);
-int intel_svm_unbind_gpasid(struct device *dev, u32 pasid);
 struct iommu_sva *intel_svm_bind(struct device *dev, struct mm_struct *mm,
 				 void *drvdata);
 void intel_svm_unbind(struct iommu_sva *handle);
@@ -792,7 +765,6 @@ struct intel_svm {
 
 	unsigned int flags;
 	u32 pasid;
-	int gpasid; /* In case that guest PASID is different from host PASID */
 	struct list_head devs;
 };
 #else
@@ -810,6 +782,8 @@ bool context_present(struct context_entry *context);
 struct context_entry *iommu_context_addr(struct intel_iommu *iommu, u8 bus,
 					 u8 devfn, int alloc);
 
+extern const struct iommu_ops intel_iommu_ops;
+
 #ifdef CONFIG_INTEL_IOMMU
 extern int iommu_calculate_agaw(struct intel_iommu *iommu);
 extern int iommu_calculate_max_sagaw(struct intel_iommu *iommu);
diff --git a/include/linux/intel-ish-client-if.h b/include/linux/intel-ish-client-if.h
index aee8ff4739b1..f45f13304add 100644
--- a/include/linux/intel-ish-client-if.h
+++ b/include/linux/intel-ish-client-if.h
@@ -9,7 +9,7 @@
 #define _INTEL_ISH_CLIENT_IF_H_
 
 #include <linux/device.h>
-#include <linux/uuid.h>
+#include <linux/mod_devicetable.h>
 
 struct ishtp_cl_device;
 struct ishtp_device;
@@ -40,7 +40,7 @@ enum cl_state {
 struct ishtp_cl_driver {
 	struct device_driver driver;
 	const char *name;
-	const guid_t *guid;
+	const struct ishtp_device_id *id;
 	int (*probe)(struct ishtp_cl_device *dev);
 	void (*remove)(struct ishtp_cl_device *dev);
 	int (*reset)(struct ishtp_cl_device *dev);
diff --git a/include/linux/intel-svm.h b/include/linux/intel-svm.h
index 57cceecbe37f..b3b125b332aa 100644
--- a/include/linux/intel-svm.h
+++ b/include/linux/intel-svm.h
@@ -8,12 +8,6 @@
 #ifndef __INTEL_SVM_H__
 #define __INTEL_SVM_H__
 
-/* Values for rxwp in fault_cb callback */
-#define SVM_REQ_READ	(1<<3)
-#define SVM_REQ_WRITE	(1<<2)
-#define SVM_REQ_EXEC	(1<<1)
-#define SVM_REQ_PRIV	(1<<0)
-
 /* Page Request Queue depth */
 #define PRQ_ORDER	2
 #define PRQ_RING_MASK	((0x1000 << PRQ_ORDER) - 0x20)
@@ -31,17 +25,5 @@
  * do such IOTLB flushes automatically.
  */
 #define SVM_FLAG_SUPERVISOR_MODE	BIT(0)
-/*
- * The SVM_FLAG_GUEST_MODE flag is used when a PASID bind is for guest
- * processes. Compared to the host bind, the primary differences are:
- * 1. mm life cycle management
- * 2. fault reporting
- */
-#define SVM_FLAG_GUEST_MODE		BIT(1)
-/*
- * The SVM_FLAG_GUEST_PASID flag is used when a guest has its own PASID space,
- * which requires guest and host PASID translation at both directions.
- */
-#define SVM_FLAG_GUEST_PASID		BIT(2)
 
 #endif /* __INTEL_SVM_H__ */
diff --git a/include/linux/intel_rapl.h b/include/linux/intel_rapl.h
index 93780834fc8f..9f4b6f5b822f 100644
--- a/include/linux/intel_rapl.h
+++ b/include/linux/intel_rapl.h
@@ -58,6 +58,12 @@ enum rapl_primitives {
 	THROTTLED_TIME,
 	PRIORITY_LEVEL,
 
+	PSYS_POWER_LIMIT1,
+	PSYS_POWER_LIMIT2,
+	PSYS_PL1_ENABLE,
+	PSYS_PL2_ENABLE,
+	PSYS_TIME_WINDOW1,
+	PSYS_TIME_WINDOW2,
 	/* below are not raw primitive data */
 	AVERAGE_POWER,
 	NR_RAPL_PRIMITIVES,
diff --git a/include/linux/interconnect.h b/include/linux/interconnect.h
index f2dd2fc8d3cd..f685777b875e 100644
--- a/include/linux/interconnect.h
+++ b/include/linux/interconnect.h
@@ -38,13 +38,6 @@ struct icc_bulk_data {
 	u32 peak_bw;
 };
 
-int __must_check of_icc_bulk_get(struct device *dev, int num_paths,
-				 struct icc_bulk_data *paths);
-void icc_bulk_put(int num_paths, struct icc_bulk_data *paths);
-int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths);
-int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths);
-void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths);
-
 #if IS_ENABLED(CONFIG_INTERCONNECT)
 
 struct icc_path *icc_get(struct device *dev, const int src_id,
@@ -58,6 +51,12 @@ int icc_disable(struct icc_path *path);
 int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw);
 void icc_set_tag(struct icc_path *path, u32 tag);
 const char *icc_get_name(struct icc_path *path);
+int __must_check of_icc_bulk_get(struct device *dev, int num_paths,
+				 struct icc_bulk_data *paths);
+void icc_bulk_put(int num_paths, struct icc_bulk_data *paths);
+int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths);
+int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths);
+void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths);
 
 #else
 
@@ -112,6 +111,29 @@ static inline const char *icc_get_name(struct icc_path *path)
 	return NULL;
 }
 
+static inline int of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths)
+{
+	return 0;
+}
+
+static inline void icc_bulk_put(int num_paths, struct icc_bulk_data *paths)
+{
+}
+
+static inline int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths)
+{
+	return 0;
+}
+
+static inline int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths)
+{
+	return 0;
+}
+
+static inline void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths)
+{
+}
+
 #endif /* CONFIG_INTERCONNECT */
 
 #endif /* __LINUX_INTERCONNECT_H */
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 1f22a30c0963..f40754caaefa 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -329,7 +329,46 @@ extern int irq_force_affinity(unsigned int irq, const struct cpumask *cpumask);
 extern int irq_can_set_affinity(unsigned int irq);
 extern int irq_select_affinity(unsigned int irq);
 
-extern int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m);
+extern int __irq_apply_affinity_hint(unsigned int irq, const struct cpumask *m,
+				     bool setaffinity);
+
+/**
+ * irq_update_affinity_hint - Update the affinity hint
+ * @irq:	Interrupt to update
+ * @m:		cpumask pointer (NULL to clear the hint)
+ *
+ * Updates the affinity hint, but does not change the affinity of the interrupt.
+ */
+static inline int
+irq_update_affinity_hint(unsigned int irq, const struct cpumask *m)
+{
+	return __irq_apply_affinity_hint(irq, m, false);
+}
+
+/**
+ * irq_set_affinity_and_hint - Update the affinity hint and apply the provided
+ *			     cpumask to the interrupt
+ * @irq:	Interrupt to update
+ * @m:		cpumask pointer (NULL to clear the hint)
+ *
+ * Updates the affinity hint and if @m is not NULL it applies it as the
+ * affinity of that interrupt.
+ */
+static inline int
+irq_set_affinity_and_hint(unsigned int irq, const struct cpumask *m)
+{
+	return __irq_apply_affinity_hint(irq, m, true);
+}
+
+/*
+ * Deprecated. Use irq_update_affinity_hint() or irq_set_affinity_and_hint()
+ * instead.
+ */
+static inline int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m)
+{
+	return irq_set_affinity_and_hint(irq, m);
+}
+
 extern int irq_update_affinity_desc(unsigned int irq,
 				    struct irq_affinity_desc *affinity);
 
@@ -361,6 +400,18 @@ static inline int irq_can_set_affinity(unsigned int irq)
 
 static inline int irq_select_affinity(unsigned int irq)  { return 0; }
 
+static inline int irq_update_affinity_hint(unsigned int irq,
+					   const struct cpumask *m)
+{
+	return -EINVAL;
+}
+
+static inline int irq_set_affinity_and_hint(unsigned int irq,
+					    const struct cpumask *m)
+{
+	return -EINVAL;
+}
+
 static inline int irq_set_affinity_hint(unsigned int irq,
 					const struct cpumask *m)
 {
@@ -528,7 +579,16 @@ enum
 	NR_SOFTIRQS
 };
 
-#define SOFTIRQ_STOP_IDLE_MASK (~(1 << RCU_SOFTIRQ))
+/*
+ * The following vectors can be safely ignored after ksoftirqd is parked:
+ *
+ * _ RCU:
+ * 	1) rcutree_migrate_callbacks() migrates the queue.
+ * 	2) rcu_report_dead() reports the final quiescent states.
+ *
+ * _ IRQ_POLL: irq_poll_cpu_dead() migrates the queue
+ */
+#define SOFTIRQ_HOTPLUG_SAFE_MASK (BIT(RCU_SOFTIRQ) | BIT(IRQ_POLL_SOFTIRQ))
 
 /* map softirq index to softirq name. update 'softirq_to_name' in
  * kernel/softirq.c when adding a new softirq.
diff --git a/include/linux/io-mapping.h b/include/linux/io-mapping.h
index e9743cfd8585..66a774d2710e 100644
--- a/include/linux/io-mapping.h
+++ b/include/linux/io-mapping.h
@@ -132,13 +132,7 @@ io_mapping_init_wc(struct io_mapping *iomap,
 
 	iomap->base = base;
 	iomap->size = size;
-#if defined(pgprot_noncached_wc) /* archs can't agree on a name ... */
-	iomap->prot = pgprot_noncached_wc(PAGE_KERNEL);
-#elif defined(pgprot_writecombine)
 	iomap->prot = pgprot_writecombine(PAGE_KERNEL);
-#else
-	iomap->prot = pgprot_noncached(PAGE_KERNEL);
-#endif
 
 	return iomap;
 }
diff --git a/include/linux/io.h b/include/linux/io.h
index 9595151d800d..5fc800390fe4 100644
--- a/include/linux/io.h
+++ b/include/linux/io.h
@@ -132,6 +132,8 @@ static inline int arch_phys_wc_index(int handle)
 #endif
 #endif
 
+int devm_arch_phys_wc_add(struct device *dev, unsigned long base, unsigned long size);
+
 enum {
 	/* See memremap() kernel-doc for usage description... */
 	MEMREMAP_WB = 1 << 0,
@@ -166,4 +168,7 @@ static inline void arch_io_free_memtype_wc(resource_size_t base,
 }
 #endif
 
+int devm_arch_io_reserve_memtype_wc(struct device *dev, resource_size_t start,
+				    resource_size_t size);
+
 #endif /* _LINUX_IO_H */
diff --git a/include/linux/io_uring.h b/include/linux/io_uring.h
index 649a4d7c241b..1814e698d861 100644
--- a/include/linux/io_uring.h
+++ b/include/linux/io_uring.h
@@ -9,11 +9,14 @@
 struct sock *io_uring_get_socket(struct file *file);
 void __io_uring_cancel(bool cancel_all);
 void __io_uring_free(struct task_struct *tsk);
+void io_uring_unreg_ringfd(void);
 
 static inline void io_uring_files_cancel(void)
 {
-	if (current->io_uring)
+	if (current->io_uring) {
+		io_uring_unreg_ringfd();
 		__io_uring_cancel(false);
+	}
 }
 static inline void io_uring_task_cancel(void)
 {
diff --git a/include/linux/ioasid.h b/include/linux/ioasid.h
index e9dacd4b9f6b..af1c9d62e642 100644
--- a/include/linux/ioasid.h
+++ b/include/linux/ioasid.h
@@ -34,13 +34,16 @@ struct ioasid_allocator_ops {
 #if IS_ENABLED(CONFIG_IOASID)
 ioasid_t ioasid_alloc(struct ioasid_set *set, ioasid_t min, ioasid_t max,
 		      void *private);
-void ioasid_get(ioasid_t ioasid);
-bool ioasid_put(ioasid_t ioasid);
+void ioasid_free(ioasid_t ioasid);
 void *ioasid_find(struct ioasid_set *set, ioasid_t ioasid,
 		  bool (*getter)(void *));
 int ioasid_register_allocator(struct ioasid_allocator_ops *allocator);
 void ioasid_unregister_allocator(struct ioasid_allocator_ops *allocator);
 int ioasid_set_data(ioasid_t ioasid, void *data);
+static inline bool pasid_valid(ioasid_t ioasid)
+{
+	return ioasid != INVALID_IOASID;
+}
 
 #else /* !CONFIG_IOASID */
 static inline ioasid_t ioasid_alloc(struct ioasid_set *set, ioasid_t min,
@@ -49,14 +52,7 @@ static inline ioasid_t ioasid_alloc(struct ioasid_set *set, ioasid_t min,
 	return INVALID_IOASID;
 }
 
-static inline void ioasid_get(ioasid_t ioasid)
-{
-}
-
-static inline bool ioasid_put(ioasid_t ioasid)
-{
-	return false;
-}
+static inline void ioasid_free(ioasid_t ioasid) { }
 
 static inline void *ioasid_find(struct ioasid_set *set, ioasid_t ioasid,
 				bool (*getter)(void *))
@@ -78,5 +74,10 @@ static inline int ioasid_set_data(ioasid_t ioasid, void *data)
 	return -ENOTSUPP;
 }
 
+static inline bool pasid_valid(ioasid_t ioasid)
+{
+	return false;
+}
+
 #endif /* CONFIG_IOASID */
 #endif /* __LINUX_IOASID_H */
diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
index 0a9dc40b7be8..14f7eaf1b443 100644
--- a/include/linux/iocontext.h
+++ b/include/linux/iocontext.h
@@ -99,55 +99,40 @@ struct io_cq {
 struct io_context {
 	atomic_long_t refcount;
 	atomic_t active_ref;
-	atomic_t nr_tasks;
 
+	unsigned short ioprio;
+
+#ifdef CONFIG_BLK_ICQ
 	/* all the fields below are protected by this lock */
 	spinlock_t lock;
 
-	unsigned short ioprio;
-
 	struct radix_tree_root	icq_tree;
 	struct io_cq __rcu	*icq_hint;
 	struct hlist_head	icq_list;
 
 	struct work_struct release_work;
+#endif /* CONFIG_BLK_ICQ */
 };
 
-/**
- * get_io_context_active - get active reference on ioc
- * @ioc: ioc of interest
- *
- * Only iocs with active reference can issue new IOs.  This function
- * acquires an active reference on @ioc.  The caller must already have an
- * active reference on @ioc.
- */
-static inline void get_io_context_active(struct io_context *ioc)
-{
-	WARN_ON_ONCE(atomic_long_read(&ioc->refcount) <= 0);
-	WARN_ON_ONCE(atomic_read(&ioc->active_ref) <= 0);
-	atomic_long_inc(&ioc->refcount);
-	atomic_inc(&ioc->active_ref);
-}
-
-static inline void ioc_task_link(struct io_context *ioc)
-{
-	get_io_context_active(ioc);
-
-	WARN_ON_ONCE(atomic_read(&ioc->nr_tasks) <= 0);
-	atomic_inc(&ioc->nr_tasks);
-}
-
 struct task_struct;
 #ifdef CONFIG_BLOCK
 void put_io_context(struct io_context *ioc);
-void put_io_context_active(struct io_context *ioc);
 void exit_io_context(struct task_struct *task);
-struct io_context *get_task_io_context(struct task_struct *task,
-				       gfp_t gfp_flags, int node);
+int __copy_io(unsigned long clone_flags, struct task_struct *tsk);
+static inline int copy_io(unsigned long clone_flags, struct task_struct *tsk)
+{
+	if (!current->io_context)
+		return 0;
+	return __copy_io(clone_flags, tsk);
+}
 #else
 struct io_context;
 static inline void put_io_context(struct io_context *ioc) { }
 static inline void exit_io_context(struct task_struct *task) { }
-#endif
+static inline int copy_io(unsigned long clone_flags, struct task_struct *tsk)
+{
+	return 0;
+}
+#endif /* CONFIG_BLOCK */
 
-#endif
+#endif /* IOCONTEXT_H */
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index 24f8489583ca..b76f0dd149fb 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -141,6 +141,11 @@ struct iomap_page_ops {
 #define IOMAP_NOWAIT		(1 << 5) /* do not block */
 #define IOMAP_OVERWRITE_ONLY	(1 << 6) /* only pure overwrites allowed */
 #define IOMAP_UNSHARE		(1 << 7) /* unshare_file_range */
+#ifdef CONFIG_FS_DAX
+#define IOMAP_DAX		(1 << 8) /* DAX mapping */
+#else
+#define IOMAP_DAX		0
+#endif /* CONFIG_FS_DAX */
 
 struct iomap_ops {
 	/*
@@ -222,11 +227,9 @@ ssize_t iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *from,
 		const struct iomap_ops *ops);
 int iomap_readpage(struct page *page, const struct iomap_ops *ops);
 void iomap_readahead(struct readahead_control *, const struct iomap_ops *ops);
-int iomap_is_partially_uptodate(struct page *page, unsigned long from,
-		unsigned long count);
+bool iomap_is_partially_uptodate(struct folio *, size_t from, size_t count);
 int iomap_releasepage(struct page *page, gfp_t gfp_mask);
-void iomap_invalidatepage(struct page *page, unsigned int offset,
-		unsigned int len);
+void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len);
 #ifdef CONFIG_MIGRATION
 int iomap_migrate_page(struct address_space *mapping, struct page *newpage,
 		struct page *page, enum migrate_mode mode);
@@ -257,9 +260,11 @@ struct iomap_ioend {
 	struct list_head	io_list;	/* next ioend in chain */
 	u16			io_type;
 	u16			io_flags;	/* IOMAP_F_* */
+	u32			io_folios;	/* folios added to ioend */
 	struct inode		*io_inode;	/* file being written to */
 	size_t			io_size;	/* size of the extent */
 	loff_t			io_offset;	/* offset in the file */
+	sector_t		io_sector;	/* start sector of ioend */
 	struct bio		*io_bio;	/* bio being built */
 	struct bio		io_inline_bio;	/* MUST BE LAST! */
 };
@@ -284,7 +289,7 @@ struct iomap_writeback_ops {
 	 * Optional, allows the file system to discard state on a page where
 	 * we failed to submit any I/O.
 	 */
-	void (*discard_page)(struct page *page, loff_t fileoff);
+	void (*discard_folio)(struct folio *folio, loff_t pos);
 };
 
 struct iomap_writepage_ctx {
@@ -313,8 +318,8 @@ int iomap_writepages(struct address_space *mapping,
 struct iomap_dio_ops {
 	int (*end_io)(struct kiocb *iocb, ssize_t size, int error,
 		      unsigned flags);
-	blk_qc_t (*submit_io)(const struct iomap_iter *iter, struct bio *bio,
-			      loff_t file_offset);
+	void (*submit_io)(const struct iomap_iter *iter, struct bio *bio,
+		          loff_t file_offset);
 };
 
 /*
@@ -330,14 +335,20 @@ struct iomap_dio_ops {
   */
 #define IOMAP_DIO_OVERWRITE_ONLY	(1 << 1)
 
+/*
+ * When a page fault occurs, return a partial synchronous result and allow
+ * the caller to retry the rest of the operation after dealing with the page
+ * fault.
+ */
+#define IOMAP_DIO_PARTIAL		(1 << 2)
+
 ssize_t iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
 		const struct iomap_ops *ops, const struct iomap_dio_ops *dops,
-		unsigned int dio_flags);
+		unsigned int dio_flags, size_t done_before);
 struct iomap_dio *__iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
 		const struct iomap_ops *ops, const struct iomap_dio_ops *dops,
-		unsigned int dio_flags);
+		unsigned int dio_flags, size_t done_before);
 ssize_t iomap_dio_complete(struct iomap_dio *dio);
-int iomap_dio_iopoll(struct kiocb *kiocb, bool spin);
 
 #ifdef CONFIG_SWAP
 struct file;
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index d2f3435e7d17..9208eca4b0d1 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -37,6 +37,7 @@ struct iommu_group;
 struct bus_type;
 struct device;
 struct iommu_domain;
+struct iommu_domain_ops;
 struct notifier_block;
 struct iommu_sva;
 struct iommu_fault_event;
@@ -88,7 +89,7 @@ struct iommu_domain_geometry {
 
 struct iommu_domain {
 	unsigned type;
-	const struct iommu_ops *ops;
+	const struct iommu_domain_ops *ops;
 	unsigned long pgsize_bitmap;	/* Bitmap of page sizes in use */
 	iommu_fault_handler_t handler;
 	void *handler_token;
@@ -144,7 +145,6 @@ struct iommu_resv_region {
 
 /**
  * enum iommu_dev_features - Per device IOMMU features
- * @IOMMU_DEV_FEAT_AUX: Auxiliary domain feature
  * @IOMMU_DEV_FEAT_SVA: Shared Virtual Addresses
  * @IOMMU_DEV_FEAT_IOPF: I/O Page Faults such as PRI or Stall. Generally
  *			 enabling %IOMMU_DEV_FEAT_SVA requires
@@ -157,7 +157,6 @@ struct iommu_resv_region {
  * iommu_dev_has_feature(), and enable it using iommu_dev_enable_feature().
  */
 enum iommu_dev_features {
-	IOMMU_DEV_FEAT_AUX,
 	IOMMU_DEV_FEAT_SVA,
 	IOMMU_DEV_FEAT_IOPF,
 };
@@ -186,7 +185,7 @@ struct iommu_iotlb_gather {
 	unsigned long		start;
 	unsigned long		end;
 	size_t			pgsize;
-	struct page		*freelist;
+	struct list_head	freelist;
 	bool			queued;
 };
 
@@ -194,48 +193,28 @@ struct iommu_iotlb_gather {
  * struct iommu_ops - iommu ops and capabilities
  * @capable: check capability
  * @domain_alloc: allocate iommu domain
- * @domain_free: free iommu domain
- * @attach_dev: attach device to an iommu domain
- * @detach_dev: detach device from an iommu domain
- * @map: map a physically contiguous memory region to an iommu domain
- * @map_pages: map a physically contiguous set of pages of the same size to
- *             an iommu domain.
- * @unmap: unmap a physically contiguous memory region from an iommu domain
- * @unmap_pages: unmap a number of pages of the same size from an iommu domain
- * @flush_iotlb_all: Synchronously flush all hardware TLBs for this domain
- * @iotlb_sync_map: Sync mappings created recently using @map to the hardware
- * @iotlb_sync: Flush all queued ranges from the hardware TLBs and empty flush
- *            queue
- * @iova_to_phys: translate iova to physical address
  * @probe_device: Add device to iommu driver handling
  * @release_device: Remove device from iommu driver handling
  * @probe_finalize: Do final setup work after the device is added to an IOMMU
  *                  group and attached to the groups domain
  * @device_group: find iommu group for a particular device
- * @enable_nesting: Enable nesting
- * @set_pgtable_quirks: Set io page table quirks (IO_PGTABLE_QUIRK_*)
  * @get_resv_regions: Request list of reserved regions for a device
  * @put_resv_regions: Free list of reserved regions for a device
- * @apply_resv_region: Temporary helper call-back for iova reserved ranges
  * @of_xlate: add OF master IDs to iommu grouping
  * @is_attach_deferred: Check if domain attach should be deferred from iommu
  *                      driver init to device driver init (default no)
  * @dev_has/enable/disable_feat: per device entries to check/enable/disable
  *                               iommu specific features.
  * @dev_feat_enabled: check enabled feature
- * @aux_attach/detach_dev: aux-domain specific attach/detach entries.
- * @aux_get_pasid: get the pasid given an aux-domain
  * @sva_bind: Bind process address space to device
  * @sva_unbind: Unbind process address space from device
  * @sva_get_pasid: Get PASID associated to a SVA handle
  * @page_response: handle page request response
- * @cache_invalidate: invalidate translation caches
- * @sva_bind_gpasid: bind guest pasid and mm
- * @sva_unbind_gpasid: unbind guest pasid and mm
  * @def_domain_type: device default domain type, return value:
  *		- IOMMU_DOMAIN_IDENTITY: must use an identity domain
  *		- IOMMU_DOMAIN_DMA: must use a dma domain
  *		- 0: use the default setting
+ * @default_domain_ops: the default ops for domains
  * @pgsize_bitmap: bitmap of all possible supported page sizes
  * @owner: Driver module providing these ops
  */
@@ -244,43 +223,18 @@ struct iommu_ops {
 
 	/* Domain allocation and freeing by the iommu driver */
 	struct iommu_domain *(*domain_alloc)(unsigned iommu_domain_type);
-	void (*domain_free)(struct iommu_domain *);
 
-	int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
-	void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
-	int (*map)(struct iommu_domain *domain, unsigned long iova,
-		   phys_addr_t paddr, size_t size, int prot, gfp_t gfp);
-	int (*map_pages)(struct iommu_domain *domain, unsigned long iova,
-			 phys_addr_t paddr, size_t pgsize, size_t pgcount,
-			 int prot, gfp_t gfp, size_t *mapped);
-	size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
-		     size_t size, struct iommu_iotlb_gather *iotlb_gather);
-	size_t (*unmap_pages)(struct iommu_domain *domain, unsigned long iova,
-			      size_t pgsize, size_t pgcount,
-			      struct iommu_iotlb_gather *iotlb_gather);
-	void (*flush_iotlb_all)(struct iommu_domain *domain);
-	void (*iotlb_sync_map)(struct iommu_domain *domain, unsigned long iova,
-			       size_t size);
-	void (*iotlb_sync)(struct iommu_domain *domain,
-			   struct iommu_iotlb_gather *iotlb_gather);
-	phys_addr_t (*iova_to_phys)(struct iommu_domain *domain, dma_addr_t iova);
 	struct iommu_device *(*probe_device)(struct device *dev);
 	void (*release_device)(struct device *dev);
 	void (*probe_finalize)(struct device *dev);
 	struct iommu_group *(*device_group)(struct device *dev);
-	int (*enable_nesting)(struct iommu_domain *domain);
-	int (*set_pgtable_quirks)(struct iommu_domain *domain,
-				  unsigned long quirks);
 
 	/* Request/Free a list of reserved regions for a device */
 	void (*get_resv_regions)(struct device *dev, struct list_head *list);
 	void (*put_resv_regions)(struct device *dev, struct list_head *list);
-	void (*apply_resv_region)(struct device *dev,
-				  struct iommu_domain *domain,
-				  struct iommu_resv_region *region);
 
 	int (*of_xlate)(struct device *dev, struct of_phandle_args *args);
-	bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev);
+	bool (*is_attach_deferred)(struct device *dev);
 
 	/* Per device IOMMU features */
 	bool (*dev_has_feat)(struct device *dev, enum iommu_dev_features f);
@@ -288,11 +242,6 @@ struct iommu_ops {
 	int (*dev_enable_feat)(struct device *dev, enum iommu_dev_features f);
 	int (*dev_disable_feat)(struct device *dev, enum iommu_dev_features f);
 
-	/* Aux-domain specific attach/detach entries */
-	int (*aux_attach_dev)(struct iommu_domain *domain, struct device *dev);
-	void (*aux_detach_dev)(struct iommu_domain *domain, struct device *dev);
-	int (*aux_get_pasid)(struct iommu_domain *domain, struct device *dev);
-
 	struct iommu_sva *(*sva_bind)(struct device *dev, struct mm_struct *mm,
 				      void *drvdata);
 	void (*sva_unbind)(struct iommu_sva *handle);
@@ -301,20 +250,64 @@ struct iommu_ops {
 	int (*page_response)(struct device *dev,
 			     struct iommu_fault_event *evt,
 			     struct iommu_page_response *msg);
-	int (*cache_invalidate)(struct iommu_domain *domain, struct device *dev,
-				struct iommu_cache_invalidate_info *inv_info);
-	int (*sva_bind_gpasid)(struct iommu_domain *domain,
-			struct device *dev, struct iommu_gpasid_bind_data *data);
-
-	int (*sva_unbind_gpasid)(struct device *dev, u32 pasid);
 
 	int (*def_domain_type)(struct device *dev);
 
+	const struct iommu_domain_ops *default_domain_ops;
 	unsigned long pgsize_bitmap;
 	struct module *owner;
 };
 
 /**
+ * struct iommu_domain_ops - domain specific operations
+ * @attach_dev: attach an iommu domain to a device
+ * @detach_dev: detach an iommu domain from a device
+ * @map: map a physically contiguous memory region to an iommu domain
+ * @map_pages: map a physically contiguous set of pages of the same size to
+ *             an iommu domain.
+ * @unmap: unmap a physically contiguous memory region from an iommu domain
+ * @unmap_pages: unmap a number of pages of the same size from an iommu domain
+ * @flush_iotlb_all: Synchronously flush all hardware TLBs for this domain
+ * @iotlb_sync_map: Sync mappings created recently using @map to the hardware
+ * @iotlb_sync: Flush all queued ranges from the hardware TLBs and empty flush
+ *            queue
+ * @iova_to_phys: translate iova to physical address
+ * @enable_nesting: Enable nesting
+ * @set_pgtable_quirks: Set io page table quirks (IO_PGTABLE_QUIRK_*)
+ * @free: Release the domain after use.
+ */
+struct iommu_domain_ops {
+	int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
+	void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
+
+	int (*map)(struct iommu_domain *domain, unsigned long iova,
+		   phys_addr_t paddr, size_t size, int prot, gfp_t gfp);
+	int (*map_pages)(struct iommu_domain *domain, unsigned long iova,
+			 phys_addr_t paddr, size_t pgsize, size_t pgcount,
+			 int prot, gfp_t gfp, size_t *mapped);
+	size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
+			size_t size, struct iommu_iotlb_gather *iotlb_gather);
+	size_t (*unmap_pages)(struct iommu_domain *domain, unsigned long iova,
+			      size_t pgsize, size_t pgcount,
+			      struct iommu_iotlb_gather *iotlb_gather);
+
+	void (*flush_iotlb_all)(struct iommu_domain *domain);
+	void (*iotlb_sync_map)(struct iommu_domain *domain, unsigned long iova,
+			       size_t size);
+	void (*iotlb_sync)(struct iommu_domain *domain,
+			   struct iommu_iotlb_gather *iotlb_gather);
+
+	phys_addr_t (*iova_to_phys)(struct iommu_domain *domain,
+				    dma_addr_t iova);
+
+	int (*enable_nesting)(struct iommu_domain *domain);
+	int (*set_pgtable_quirks)(struct iommu_domain *domain,
+				  unsigned long quirks);
+
+	void (*free)(struct iommu_domain *domain);
+};
+
+/**
  * struct iommu_device - IOMMU core representation of one IOMMU hardware
  *			 instance
  * @list: Used by the iommu-core to keep a list of registered iommus
@@ -399,9 +392,21 @@ static inline void iommu_iotlb_gather_init(struct iommu_iotlb_gather *gather)
 {
 	*gather = (struct iommu_iotlb_gather) {
 		.start	= ULONG_MAX,
+		.freelist = LIST_HEAD_INIT(gather->freelist),
 	};
 }
 
+static inline const struct iommu_ops *dev_iommu_ops(struct device *dev)
+{
+	/*
+	 * Assume that valid ops must be installed if iommu_probe_device()
+	 * has succeeded. The device ops are essentially for internal use
+	 * within the IOMMU subsystem itself, so we should be able to trust
+	 * ourselves not to misuse the helper.
+	 */
+	return dev->iommu->iommu_dev->ops;
+}
+
 #define IOMMU_GROUP_NOTIFY_ADD_DEVICE		1 /* Device added */
 #define IOMMU_GROUP_NOTIFY_DEL_DEVICE		2 /* Pre Device removed */
 #define IOMMU_GROUP_NOTIFY_BIND_DRIVER		3 /* Pre Driver bind */
@@ -420,14 +425,6 @@ extern int iommu_attach_device(struct iommu_domain *domain,
 			       struct device *dev);
 extern void iommu_detach_device(struct iommu_domain *domain,
 				struct device *dev);
-extern int iommu_uapi_cache_invalidate(struct iommu_domain *domain,
-				       struct device *dev,
-				       void __user *uinfo);
-
-extern int iommu_uapi_sva_bind_gpasid(struct iommu_domain *domain,
-				      struct device *dev, void __user *udata);
-extern int iommu_uapi_sva_unbind_gpasid(struct iommu_domain *domain,
-					struct device *dev, void __user *udata);
 extern int iommu_sva_unbind_gpasid(struct iommu_domain *domain,
 				   struct device *dev, ioasid_t pasid);
 extern struct iommu_domain *iommu_get_domain_for_dev(struct device *dev);
@@ -671,9 +668,6 @@ void iommu_release_device(struct device *dev);
 int iommu_dev_enable_feature(struct device *dev, enum iommu_dev_features f);
 int iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features f);
 bool iommu_dev_feature_enabled(struct device *dev, enum iommu_dev_features f);
-int iommu_aux_attach_device(struct iommu_domain *domain, struct device *dev);
-void iommu_aux_detach_device(struct iommu_domain *domain, struct device *dev);
-int iommu_aux_get_pasid(struct iommu_domain *domain, struct device *dev);
 
 struct iommu_sva *iommu_sva_bind_device(struct device *dev,
 					struct mm_struct *mm,
@@ -1018,23 +1012,6 @@ iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features feat)
 	return -ENODEV;
 }
 
-static inline int
-iommu_aux_attach_device(struct iommu_domain *domain, struct device *dev)
-{
-	return -ENODEV;
-}
-
-static inline void
-iommu_aux_detach_device(struct iommu_domain *domain, struct device *dev)
-{
-}
-
-static inline int
-iommu_aux_get_pasid(struct iommu_domain *domain, struct device *dev)
-{
-	return -ENODEV;
-}
-
 static inline struct iommu_sva *
 iommu_sva_bind_device(struct device *dev, struct mm_struct *mm, void *drvdata)
 {
@@ -1050,33 +1027,6 @@ static inline u32 iommu_sva_get_pasid(struct iommu_sva *handle)
 	return IOMMU_PASID_INVALID;
 }
 
-static inline int
-iommu_uapi_cache_invalidate(struct iommu_domain *domain,
-			    struct device *dev,
-			    struct iommu_cache_invalidate_info *inv_info)
-{
-	return -ENODEV;
-}
-
-static inline int iommu_uapi_sva_bind_gpasid(struct iommu_domain *domain,
-					     struct device *dev, void __user *udata)
-{
-	return -ENODEV;
-}
-
-static inline int iommu_uapi_sva_unbind_gpasid(struct iommu_domain *domain,
-					       struct device *dev, void __user *udata)
-{
-	return -ENODEV;
-}
-
-static inline int iommu_sva_unbind_gpasid(struct iommu_domain *domain,
-					  struct device *dev,
-					  ioasid_t pasid)
-{
-	return -ENODEV;
-}
-
 static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev)
 {
 	return NULL;
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 8359c50f9988..ec5f71f7135b 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -262,6 +262,8 @@ resource_union(struct resource *r1, struct resource *r2, struct resource *r)
 #define request_muxed_region(start,n,name)	__request_region(&ioport_resource, (start), (n), (name), IORESOURCE_MUXED)
 #define __request_mem_region(start,n,name, excl) __request_region(&iomem_resource, (start), (n), (name), excl)
 #define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name), 0)
+#define request_mem_region_muxed(start, n, name) \
+	__request_region(&iomem_resource, (start), (n), (name), IORESOURCE_MUXED)
 #define request_mem_region_exclusive(start,n,name) \
 	__request_region(&iomem_resource, (start), (n), (name), IORESOURCE_EXCLUSIVE)
 #define rename_region(region, newname) do { (region)->name = (newname); } while (0)
diff --git a/include/linux/iosys-map.h b/include/linux/iosys-map.h
new file mode 100644
index 000000000000..e69a002d5aa4
--- /dev/null
+++ b/include/linux/iosys-map.h
@@ -0,0 +1,459 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Pointer abstraction for IO/system memory
+ */
+
+#ifndef __IOSYS_MAP_H__
+#define __IOSYS_MAP_H__
+
+#include <linux/io.h>
+#include <linux/string.h>
+
+/**
+ * DOC: overview
+ *
+ * When accessing a memory region, depending on its location, users may have to
+ * access it with I/O operations or memory load/store operations. For example,
+ * copying to system memory could be done with memcpy(), copying to I/O memory
+ * would be done with memcpy_toio().
+ *
+ * .. code-block:: c
+ *
+ *	void *vaddr = ...; // pointer to system memory
+ *	memcpy(vaddr, src, len);
+ *
+ *	void *vaddr_iomem = ...; // pointer to I/O memory
+ *	memcpy_toio(vaddr, _iomem, src, len);
+ *
+ * The user of such pointer may not have information about the mapping of that
+ * region or may want to have a single code path to handle operations on that
+ * buffer, regardless if it's located in system or IO memory. The type
+ * :c:type:`struct iosys_map <iosys_map>` and its helpers abstract that so the
+ * buffer can be passed around to other drivers or have separate duties inside
+ * the same driver for allocation, read and write operations.
+ *
+ * Open-coding access to :c:type:`struct iosys_map <iosys_map>` is considered
+ * bad style. Rather then accessing its fields directly, use one of the provided
+ * helper functions, or implement your own. For example, instances of
+ * :c:type:`struct iosys_map <iosys_map>` can be initialized statically with
+ * IOSYS_MAP_INIT_VADDR(), or at runtime with iosys_map_set_vaddr(). These
+ * helpers will set an address in system memory.
+ *
+ * .. code-block:: c
+ *
+ *	struct iosys_map map = IOSYS_MAP_INIT_VADDR(0xdeadbeaf);
+ *
+ *	iosys_map_set_vaddr(&map, 0xdeadbeaf);
+ *
+ * To set an address in I/O memory, use iosys_map_set_vaddr_iomem().
+ *
+ * .. code-block:: c
+ *
+ *	iosys_map_set_vaddr_iomem(&map, 0xdeadbeaf);
+ *
+ * Instances of struct iosys_map do not have to be cleaned up, but
+ * can be cleared to NULL with iosys_map_clear(). Cleared mappings
+ * always refer to system memory.
+ *
+ * .. code-block:: c
+ *
+ *	iosys_map_clear(&map);
+ *
+ * Test if a mapping is valid with either iosys_map_is_set() or
+ * iosys_map_is_null().
+ *
+ * .. code-block:: c
+ *
+ *	if (iosys_map_is_set(&map) != iosys_map_is_null(&map))
+ *		// always true
+ *
+ * Instances of :c:type:`struct iosys_map <iosys_map>` can be compared for
+ * equality with iosys_map_is_equal(). Mappings that point to different memory
+ * spaces, system or I/O, are never equal. That's even true if both spaces are
+ * located in the same address space, both mappings contain the same address
+ * value, or both mappings refer to NULL.
+ *
+ * .. code-block:: c
+ *
+ *	struct iosys_map sys_map; // refers to system memory
+ *	struct iosys_map io_map; // refers to I/O memory
+ *
+ *	if (iosys_map_is_equal(&sys_map, &io_map))
+ *		// always false
+ *
+ * A set up instance of struct iosys_map can be used to access or manipulate the
+ * buffer memory. Depending on the location of the memory, the provided helpers
+ * will pick the correct operations. Data can be copied into the memory with
+ * iosys_map_memcpy_to(). The address can be manipulated with iosys_map_incr().
+ *
+ * .. code-block:: c
+ *
+ *	const void *src = ...; // source buffer
+ *	size_t len = ...; // length of src
+ *
+ *	iosys_map_memcpy_to(&map, src, len);
+ *	iosys_map_incr(&map, len); // go to first byte after the memcpy
+ */
+
+/**
+ * struct iosys_map - Pointer to IO/system memory
+ * @vaddr_iomem:	The buffer's address if in I/O memory
+ * @vaddr:		The buffer's address if in system memory
+ * @is_iomem:		True if the buffer is located in I/O memory, or false
+ *			otherwise.
+ */
+struct iosys_map {
+	union {
+		void __iomem *vaddr_iomem;
+		void *vaddr;
+	};
+	bool is_iomem;
+};
+
+/**
+ * IOSYS_MAP_INIT_VADDR - Initializes struct iosys_map to an address in system memory
+ * @vaddr_:	A system-memory address
+ */
+#define IOSYS_MAP_INIT_VADDR(vaddr_)	\
+	{				\
+		.vaddr = (vaddr_),	\
+		.is_iomem = false,	\
+	}
+
+/**
+ * IOSYS_MAP_INIT_OFFSET - Initializes struct iosys_map from another iosys_map
+ * @map_:	The dma-buf mapping structure to copy from
+ * @offset_:	Offset to add to the other mapping
+ *
+ * Initializes a new iosys_map struct based on another passed as argument. It
+ * does a shallow copy of the struct so it's possible to update the back storage
+ * without changing where the original map points to. It is the equivalent of
+ * doing:
+ *
+ * .. code-block:: c
+ *
+ *	iosys_map map = other_map;
+ *	iosys_map_incr(&map, &offset);
+ *
+ * Example usage:
+ *
+ * .. code-block:: c
+ *
+ *	void foo(struct device *dev, struct iosys_map *base_map)
+ *	{
+ *		...
+ *		struct iosys_map map = IOSYS_MAP_INIT_OFFSET(base_map, FIELD_OFFSET);
+ *		...
+ *	}
+ *
+ * The advantage of using the initializer over just increasing the offset with
+ * iosys_map_incr() like above is that the new map will always point to the
+ * right place of the buffer during its scope. It reduces the risk of updating
+ * the wrong part of the buffer and having no compiler warning about that. If
+ * the assignment to IOSYS_MAP_INIT_OFFSET() is forgotten, the compiler can warn
+ * about the use of uninitialized variable.
+ */
+#define IOSYS_MAP_INIT_OFFSET(map_, offset_) ({				\
+	struct iosys_map copy = *map_;					\
+	iosys_map_incr(&copy, offset_);					\
+	copy;								\
+})
+
+/**
+ * iosys_map_set_vaddr - Sets a iosys mapping structure to an address in system memory
+ * @map:	The iosys_map structure
+ * @vaddr:	A system-memory address
+ *
+ * Sets the address and clears the I/O-memory flag.
+ */
+static inline void iosys_map_set_vaddr(struct iosys_map *map, void *vaddr)
+{
+	map->vaddr = vaddr;
+	map->is_iomem = false;
+}
+
+/**
+ * iosys_map_set_vaddr_iomem - Sets a iosys mapping structure to an address in I/O memory
+ * @map:		The iosys_map structure
+ * @vaddr_iomem:	An I/O-memory address
+ *
+ * Sets the address and the I/O-memory flag.
+ */
+static inline void iosys_map_set_vaddr_iomem(struct iosys_map *map,
+					     void __iomem *vaddr_iomem)
+{
+	map->vaddr_iomem = vaddr_iomem;
+	map->is_iomem = true;
+}
+
+/**
+ * iosys_map_is_equal - Compares two iosys mapping structures for equality
+ * @lhs:	The iosys_map structure
+ * @rhs:	A iosys_map structure to compare with
+ *
+ * Two iosys mapping structures are equal if they both refer to the same type of memory
+ * and to the same address within that memory.
+ *
+ * Returns:
+ * True is both structures are equal, or false otherwise.
+ */
+static inline bool iosys_map_is_equal(const struct iosys_map *lhs,
+				      const struct iosys_map *rhs)
+{
+	if (lhs->is_iomem != rhs->is_iomem)
+		return false;
+	else if (lhs->is_iomem)
+		return lhs->vaddr_iomem == rhs->vaddr_iomem;
+	else
+		return lhs->vaddr == rhs->vaddr;
+}
+
+/**
+ * iosys_map_is_null - Tests for a iosys mapping to be NULL
+ * @map:	The iosys_map structure
+ *
+ * Depending on the state of struct iosys_map.is_iomem, tests if the
+ * mapping is NULL.
+ *
+ * Returns:
+ * True if the mapping is NULL, or false otherwise.
+ */
+static inline bool iosys_map_is_null(const struct iosys_map *map)
+{
+	if (map->is_iomem)
+		return !map->vaddr_iomem;
+	return !map->vaddr;
+}
+
+/**
+ * iosys_map_is_set - Tests if the iosys mapping has been set
+ * @map:	The iosys_map structure
+ *
+ * Depending on the state of struct iosys_map.is_iomem, tests if the
+ * mapping has been set.
+ *
+ * Returns:
+ * True if the mapping is been set, or false otherwise.
+ */
+static inline bool iosys_map_is_set(const struct iosys_map *map)
+{
+	return !iosys_map_is_null(map);
+}
+
+/**
+ * iosys_map_clear - Clears a iosys mapping structure
+ * @map:	The iosys_map structure
+ *
+ * Clears all fields to zero, including struct iosys_map.is_iomem, so
+ * mapping structures that were set to point to I/O memory are reset for
+ * system memory. Pointers are cleared to NULL. This is the default.
+ */
+static inline void iosys_map_clear(struct iosys_map *map)
+{
+	if (map->is_iomem) {
+		map->vaddr_iomem = NULL;
+		map->is_iomem = false;
+	} else {
+		map->vaddr = NULL;
+	}
+}
+
+/**
+ * iosys_map_memcpy_to - Memcpy into offset of iosys_map
+ * @dst:	The iosys_map structure
+ * @dst_offset:	The offset from which to copy
+ * @src:	The source buffer
+ * @len:	The number of byte in src
+ *
+ * Copies data into a iosys_map with an offset. The source buffer is in
+ * system memory. Depending on the buffer's location, the helper picks the
+ * correct method of accessing the memory.
+ */
+static inline void iosys_map_memcpy_to(struct iosys_map *dst, size_t dst_offset,
+				       const void *src, size_t len)
+{
+	if (dst->is_iomem)
+		memcpy_toio(dst->vaddr_iomem + dst_offset, src, len);
+	else
+		memcpy(dst->vaddr + dst_offset, src, len);
+}
+
+/**
+ * iosys_map_memcpy_from - Memcpy from iosys_map into system memory
+ * @dst:	Destination in system memory
+ * @src:	The iosys_map structure
+ * @src_offset:	The offset from which to copy
+ * @len:	The number of byte in src
+ *
+ * Copies data from a iosys_map with an offset. The dest buffer is in
+ * system memory. Depending on the mapping location, the helper picks the
+ * correct method of accessing the memory.
+ */
+static inline void iosys_map_memcpy_from(void *dst, const struct iosys_map *src,
+					 size_t src_offset, size_t len)
+{
+	if (src->is_iomem)
+		memcpy_fromio(dst, src->vaddr_iomem + src_offset, len);
+	else
+		memcpy(dst, src->vaddr + src_offset, len);
+}
+
+/**
+ * iosys_map_incr - Increments the address stored in a iosys mapping
+ * @map:	The iosys_map structure
+ * @incr:	The number of bytes to increment
+ *
+ * Increments the address stored in a iosys mapping. Depending on the
+ * buffer's location, the correct value will be updated.
+ */
+static inline void iosys_map_incr(struct iosys_map *map, size_t incr)
+{
+	if (map->is_iomem)
+		map->vaddr_iomem += incr;
+	else
+		map->vaddr += incr;
+}
+
+/**
+ * iosys_map_memset - Memset iosys_map
+ * @dst:	The iosys_map structure
+ * @offset:	Offset from dst where to start setting value
+ * @value:	The value to set
+ * @len:	The number of bytes to set in dst
+ *
+ * Set value in iosys_map. Depending on the buffer's location, the helper
+ * picks the correct method of accessing the memory.
+ */
+static inline void iosys_map_memset(struct iosys_map *dst, size_t offset,
+				    int value, size_t len)
+{
+	if (dst->is_iomem)
+		memset_io(dst->vaddr_iomem + offset, value, len);
+	else
+		memset(dst->vaddr + offset, value, len);
+}
+
+/**
+ * iosys_map_rd - Read a C-type value from the iosys_map
+ *
+ * @map__:	The iosys_map structure
+ * @offset__:	The offset from which to read
+ * @type__:	Type of the value being read
+ *
+ * Read a C type value from iosys_map, handling possible un-aligned accesses to
+ * the mapping.
+ *
+ * Returns:
+ * The value read from the mapping.
+ */
+#define iosys_map_rd(map__, offset__, type__) ({			\
+	type__ val;							\
+	iosys_map_memcpy_from(&val, map__, offset__, sizeof(val));	\
+	val;								\
+})
+
+/**
+ * iosys_map_wr - Write a C-type value to the iosys_map
+ *
+ * @map__:	The iosys_map structure
+ * @offset__:	The offset from the mapping to write to
+ * @type__:	Type of the value being written
+ * @val__:	Value to write
+ *
+ * Write a C-type value to the iosys_map, handling possible un-aligned accesses
+ * to the mapping.
+ */
+#define iosys_map_wr(map__, offset__, type__, val__) ({			\
+	type__ val = (val__);						\
+	iosys_map_memcpy_to(map__, offset__, &val, sizeof(val));	\
+})
+
+/**
+ * iosys_map_rd_field - Read a member from a struct in the iosys_map
+ *
+ * @map__:		The iosys_map structure
+ * @struct_offset__:	Offset from the beggining of the map, where the struct
+ *			is located
+ * @struct_type__:	The struct describing the layout of the mapping
+ * @field__:		Member of the struct to read
+ *
+ * Read a value from iosys_map considering its layout is described by a C struct
+ * starting at @struct_offset__. The field offset and size is calculated and its
+ * value read handling possible un-aligned memory accesses. For example: suppose
+ * there is a @struct foo defined as below and the value ``foo.field2.inner2``
+ * needs to be read from the iosys_map:
+ *
+ * .. code-block:: c
+ *
+ *	struct foo {
+ *		int field1;
+ *		struct {
+ *			int inner1;
+ *			int inner2;
+ *		} field2;
+ *		int field3;
+ *	} __packed;
+ *
+ * This is the expected memory layout of a buffer using iosys_map_rd_field():
+ *
+ * +------------------------------+--------------------------+
+ * | Address                      | Content                  |
+ * +==============================+==========================+
+ * | buffer + 0000                | start of mmapped buffer  |
+ * |                              | pointed by iosys_map     |
+ * +------------------------------+--------------------------+
+ * | ...                          | ...                      |
+ * +------------------------------+--------------------------+
+ * | buffer + ``struct_offset__`` | start of ``struct foo``  |
+ * +------------------------------+--------------------------+
+ * | ...                          | ...                      |
+ * +------------------------------+--------------------------+
+ * | buffer + wwww                | ``foo.field2.inner2``    |
+ * +------------------------------+--------------------------+
+ * | ...                          | ...                      |
+ * +------------------------------+--------------------------+
+ * | buffer + yyyy                | end of ``struct foo``    |
+ * +------------------------------+--------------------------+
+ * | ...                          | ...                      |
+ * +------------------------------+--------------------------+
+ * | buffer + zzzz                | end of mmaped buffer     |
+ * +------------------------------+--------------------------+
+ *
+ * Values automatically calculated by this macro or not needed are denoted by
+ * wwww, yyyy and zzzz. This is the code to read that value:
+ *
+ * .. code-block:: c
+ *
+ *	x = iosys_map_rd_field(&map, offset, struct foo, field2.inner2);
+ *
+ * Returns:
+ * The value read from the mapping.
+ */
+#define iosys_map_rd_field(map__, struct_offset__, struct_type__, field__) ({	\
+	struct_type__ *s;							\
+	iosys_map_rd(map__, struct_offset__ + offsetof(struct_type__, field__),	\
+		     typeof(s->field__));					\
+})
+
+/**
+ * iosys_map_wr_field - Write to a member of a struct in the iosys_map
+ *
+ * @map__:		The iosys_map structure
+ * @struct_offset__:	Offset from the beggining of the map, where the struct
+ *			is located
+ * @struct_type__:	The struct describing the layout of the mapping
+ * @field__:		Member of the struct to read
+ * @val__:		Value to write
+ *
+ * Write a value to the iosys_map considering its layout is described by a C struct
+ * starting at @struct_offset__. The field offset and size is calculated and the
+ * @val__ is written handling possible un-aligned memory accesses. Refer to
+ * iosys_map_rd_field() for expected usage and memory layout.
+ */
+#define iosys_map_wr_field(map__, struct_offset__, struct_type__, field__, val__) ({	\
+	struct_type__ *s;								\
+	iosys_map_wr(map__, struct_offset__ + offsetof(struct_type__, field__),		\
+		     typeof(s->field__), val__);					\
+})
+
+#endif /* __IOSYS_MAP_H__ */
diff --git a/include/linux/iova.h b/include/linux/iova.h
index 71d8a2de6635..320a70e40233 100644
--- a/include/linux/iova.h
+++ b/include/linux/iova.h
@@ -12,7 +12,6 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/rbtree.h>
-#include <linux/atomic.h>
 #include <linux/dma-mapping.h>
 
 /* iova structure */
@@ -22,47 +21,8 @@ struct iova {
 	unsigned long	pfn_lo; /* Lowest allocated pfn */
 };
 
-struct iova_magazine;
-struct iova_cpu_rcache;
 
-#define IOVA_RANGE_CACHE_MAX_SIZE 6	/* log of max cached IOVA range size (in pages) */
-#define MAX_GLOBAL_MAGS 32	/* magazines per bin */
-
-struct iova_rcache {
-	spinlock_t lock;
-	unsigned long depot_size;
-	struct iova_magazine *depot[MAX_GLOBAL_MAGS];
-	struct iova_cpu_rcache __percpu *cpu_rcaches;
-};
-
-struct iova_domain;
-
-/* Call-Back from IOVA code into IOMMU drivers */
-typedef void (* iova_flush_cb)(struct iova_domain *domain);
-
-/* Destructor for per-entry data */
-typedef void (* iova_entry_dtor)(unsigned long data);
-
-/* Number of entries per Flush Queue */
-#define IOVA_FQ_SIZE	256
-
-/* Timeout (in ms) after which entries are flushed from the Flush-Queue */
-#define IOVA_FQ_TIMEOUT	10
-
-/* Flush Queue entry for defered flushing */
-struct iova_fq_entry {
-	unsigned long iova_pfn;
-	unsigned long pages;
-	unsigned long data;
-	u64 counter; /* Flush counter when this entrie was added */
-};
-
-/* Per-CPU Flush Queue structure */
-struct iova_fq {
-	struct iova_fq_entry entries[IOVA_FQ_SIZE];
-	unsigned head, tail;
-	spinlock_t lock;
-};
+struct iova_rcache;
 
 /* holds all the iova translations for a domain */
 struct iova_domain {
@@ -74,27 +34,9 @@ struct iova_domain {
 	unsigned long	start_pfn;	/* Lower limit for this domain */
 	unsigned long	dma_32bit_pfn;
 	unsigned long	max32_alloc_size; /* Size of last failed allocation */
-	struct iova_fq __percpu *fq;	/* Flush Queue */
-
-	atomic64_t	fq_flush_start_cnt;	/* Number of TLB flushes that
-						   have been started */
-
-	atomic64_t	fq_flush_finish_cnt;	/* Number of TLB flushes that
-						   have been finished */
-
 	struct iova	anchor;		/* rbtree lookup anchor */
-	struct iova_rcache rcaches[IOVA_RANGE_CACHE_MAX_SIZE];	/* IOVA range caches */
 
-	iova_flush_cb	flush_cb;	/* Call-Back function to flush IOMMU
-					   TLBs */
-
-	iova_entry_dtor entry_dtor;	/* IOMMU driver specific destructor for
-					   iova entry */
-
-	struct timer_list fq_timer;		/* Timer to regularily empty the
-						   flush-queues */
-	atomic_t fq_timer_on;			/* 1 when timer is active, 0
-						   when not */
+	struct iova_rcache	*rcaches;
 	struct hlist_node	cpuhp_dead;
 };
 
@@ -144,17 +86,13 @@ struct iova *alloc_iova(struct iova_domain *iovad, unsigned long size,
 	bool size_aligned);
 void free_iova_fast(struct iova_domain *iovad, unsigned long pfn,
 		    unsigned long size);
-void queue_iova(struct iova_domain *iovad,
-		unsigned long pfn, unsigned long pages,
-		unsigned long data);
 unsigned long alloc_iova_fast(struct iova_domain *iovad, unsigned long size,
 			      unsigned long limit_pfn, bool flush_rcache);
 struct iova *reserve_iova(struct iova_domain *iovad, unsigned long pfn_lo,
 	unsigned long pfn_hi);
 void init_iova_domain(struct iova_domain *iovad, unsigned long granule,
 	unsigned long start_pfn);
-int init_iova_flush_queue(struct iova_domain *iovad,
-			  iova_flush_cb flush_cb, iova_entry_dtor entry_dtor);
+int iova_domain_init_rcaches(struct iova_domain *iovad);
 struct iova *find_iova(struct iova_domain *iovad, unsigned long pfn);
 void put_iova_domain(struct iova_domain *iovad);
 #else
@@ -189,12 +127,6 @@ static inline void free_iova_fast(struct iova_domain *iovad,
 {
 }
 
-static inline void queue_iova(struct iova_domain *iovad,
-			      unsigned long pfn, unsigned long pages,
-			      unsigned long data)
-{
-}
-
 static inline unsigned long alloc_iova_fast(struct iova_domain *iovad,
 					    unsigned long size,
 					    unsigned long limit_pfn,
@@ -216,13 +148,6 @@ static inline void init_iova_domain(struct iova_domain *iovad,
 {
 }
 
-static inline int init_iova_flush_queue(struct iova_domain *iovad,
-					iova_flush_cb flush_cb,
-					iova_entry_dtor entry_dtor)
-{
-	return -ENODEV;
-}
-
 static inline struct iova *find_iova(struct iova_domain *iovad,
 				     unsigned long pfn)
 {
diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index 05e22770af51..b75395ec8d52 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -131,6 +131,16 @@ static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns)
 	return ns;
 }
 
+static inline struct ipc_namespace *get_ipc_ns_not_zero(struct ipc_namespace *ns)
+{
+	if (ns) {
+		if (refcount_inc_not_zero(&ns->ns.count))
+			return ns;
+	}
+
+	return NULL;
+}
+
 extern void put_ipc_ns(struct ipc_namespace *ns);
 #else
 static inline struct ipc_namespace *copy_ipcs(unsigned long flags,
@@ -147,6 +157,11 @@ static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns)
 	return ns;
 }
 
+static inline struct ipc_namespace *get_ipc_ns_not_zero(struct ipc_namespace *ns)
+{
+	return ns;
+}
+
 static inline void put_ipc_ns(struct ipc_namespace *ns)
 {
 }
diff --git a/include/linux/ipmi.h b/include/linux/ipmi.h
index 52850a02a3d0..163831a087ef 100644
--- a/include/linux/ipmi.h
+++ b/include/linux/ipmi.h
@@ -335,4 +335,7 @@ extern int ipmi_get_smi_info(int if_num, struct ipmi_smi_info *data);
 
 #define GET_DEVICE_ID_MAX_RETRY		5
 
+/* Helper function for computing the IPMB checksum of some data. */
+unsigned char ipmb_checksum(unsigned char *data, int size);
+
 #endif /* __LINUX_IPMI_H */
diff --git a/include/linux/ipmi_smi.h b/include/linux/ipmi_smi.h
index deec18b8944a..9277d21c2690 100644
--- a/include/linux/ipmi_smi.h
+++ b/include/linux/ipmi_smi.h
@@ -39,6 +39,59 @@ struct ipmi_smi;
 #define IPMI_WATCH_MASK_CHECK_COMMANDS	(1 << 2)
 
 /*
+ * SMI messages
+ *
+ * When communicating with an SMI, messages come in two formats:
+ *
+ * * Normal (to a BMC over a BMC interface)
+ *
+ * * IPMB (over a IPMB to another MC)
+ *
+ * When normal, commands are sent using the format defined by a
+ * standard message over KCS (NetFn must be even):
+ *
+ *   +-----------+-----+------+
+ *   | NetFn/LUN | Cmd | Data |
+ *   +-----------+-----+------+
+ *
+ * And responses, similarly, with an completion code added (NetFn must
+ * be odd):
+ *
+ *   +-----------+-----+------+------+
+ *   | NetFn/LUN | Cmd | CC   | Data |
+ *   +-----------+-----+------+------+
+ *
+ * With normal messages, only commands are sent and only responses are
+ * received.
+ *
+ * In IPMB mode, we are acting as an IPMB device. Commands will be in
+ * the following format (NetFn must be even):
+ *
+ *   +-------------+------+-------------+-----+------+
+ *   | NetFn/rsLUN | Addr | rqSeq/rqLUN | Cmd | Data |
+ *   +-------------+------+-------------+-----+------+
+ *
+ * Responses will using the following format:
+ *
+ *   +-------------+------+-------------+-----+------+------+
+ *   | NetFn/rqLUN | Addr | rqSeq/rsLUN | Cmd | CC   | Data |
+ *   +-------------+------+-------------+-----+------+------+
+ *
+ * This is similar to the format defined in the IPMB manual section
+ * 2.11.1 with the checksums and the first address removed.  Also, the
+ * address is always the remote address.
+ *
+ * IPMB messages can be commands and responses in both directions.
+ * Received commands are handled as received commands from the message
+ * queue.
+ */
+
+enum ipmi_smi_msg_type {
+	IPMI_SMI_MSG_TYPE_NORMAL = 0,
+	IPMI_SMI_MSG_TYPE_IPMB_DIRECT
+};
+
+/*
  * Messages to/from the lower layer.  The smi interface will take one
  * of these to send. After the send has occurred and a response has
  * been received, it will report this same data structure back up to
@@ -54,6 +107,8 @@ struct ipmi_smi;
 struct ipmi_smi_msg {
 	struct list_head link;
 
+	enum ipmi_smi_msg_type type;
+
 	long    msgid;
 	void    *user_data;
 
@@ -73,6 +128,10 @@ struct ipmi_smi_msg {
 struct ipmi_smi_handlers {
 	struct module *owner;
 
+	/* Capabilities of the SMI. */
+#define IPMI_SMI_CAN_HANDLE_IPMB_DIRECT		(1 << 0)
+	unsigned int flags;
+
 	/*
 	 * The low-level interface cannot start sending messages to
 	 * the upper layer until this function is called.  This may
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index ef4a69865737..16870f86c74d 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -51,7 +51,7 @@ struct ipv6_devconf {
 	__s32		use_optimistic;
 #endif
 #ifdef CONFIG_IPV6_MROUTE
-	__s32		mc_forwarding;
+	atomic_t	mc_forwarding;
 #endif
 	__s32		disable_ipv6;
 	__s32		drop_unicast_in_l2_multicast;
@@ -79,6 +79,7 @@ struct ipv6_devconf {
 	__u32		ioam6_id;
 	__u32		ioam6_id_wide;
 	__u8		ioam6_enabled;
+	__u8		ndisc_evict_nocarrier;
 
 	struct ctl_table_header *sysctl_header;
 };
@@ -132,6 +133,7 @@ struct inet6_skb_parm {
 	__u16			dsthao;
 #endif
 	__u16			frag_max_size;
+	__u16			srhoff;
 
 #define IP6SKB_XFRM_TRANSFORMED	1
 #define IP6SKB_FORWARDED	2
@@ -141,6 +143,7 @@ struct inet6_skb_parm {
 #define IP6SKB_HOPBYHOP        32
 #define IP6SKB_L3SLAVE         64
 #define IP6SKB_JUMBOGRAM      128
+#define IP6SKB_SEG6	      256
 };
 
 #if defined(CONFIG_NET_L3_MASTER_DEV)
@@ -282,7 +285,6 @@ struct ipv6_pinfo {
 	__be32			rcv_flowinfo;
 
 	__u32			dst_cookie;
-	__u32			rx_dst_cookie;
 
 	struct ipv6_mc_socklist	__rcu *ipv6_mc_list;
 	struct ipv6_ac_socklist	*ipv6_ac_list;
@@ -369,19 +371,12 @@ static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
 	return NULL;
 }
 
-static inline struct inet6_request_sock *
-			inet6_rsk(const struct request_sock *rsk)
-{
-	return NULL;
-}
-
 static inline struct raw6_sock *raw6_sk(const struct sock *sk)
 {
 	return NULL;
 }
 
 #define inet6_rcv_saddr(__sk)	NULL
-#define tcp_twsk_ipv6only(__sk)		0
 #define inet_v6_ipv6only(__sk)		0
 #endif /* IS_ENABLED(CONFIG_IPV6) */
 #endif /* _IPV6_H */
diff --git a/include/linux/irq.h b/include/linux/irq.h
index c8293c817646..f92788ccdba2 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -456,7 +456,6 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
 /**
  * struct irq_chip - hardware interrupt chip descriptor
  *
- * @parent_device:	pointer to parent device for irqchip
  * @name:		name for /proc/interrupts
  * @irq_startup:	start up the interrupt (defaults to ->enable if NULL)
  * @irq_shutdown:	shut down the interrupt (defaults to ->disable if NULL)
@@ -503,7 +502,6 @@ static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
  * @flags:		chip specific flags
  */
 struct irq_chip {
-	struct device	*parent_device;
 	const char	*name;
 	unsigned int	(*irq_startup)(struct irq_data *data);
 	void		(*irq_shutdown)(struct irq_data *data);
@@ -524,9 +522,10 @@ struct irq_chip {
 	void		(*irq_bus_lock)(struct irq_data *data);
 	void		(*irq_bus_sync_unlock)(struct irq_data *data);
 
+#ifdef CONFIG_DEPRECATED_IRQ_CPU_ONOFFLINE
 	void		(*irq_cpu_online)(struct irq_data *data);
 	void		(*irq_cpu_offline)(struct irq_data *data);
-
+#endif
 	void		(*irq_suspend)(struct irq_data *data);
 	void		(*irq_resume)(struct irq_data *data);
 	void		(*irq_pm_shutdown)(struct irq_data *data);
@@ -606,8 +605,10 @@ struct irqaction;
 extern int setup_percpu_irq(unsigned int irq, struct irqaction *new);
 extern void remove_percpu_irq(unsigned int irq, struct irqaction *act);
 
+#ifdef CONFIG_DEPRECATED_IRQ_CPU_ONOFFLINE
 extern void irq_cpu_online(void);
 extern void irq_cpu_offline(void);
+#endif
 extern int irq_set_affinity_locked(struct irq_data *data,
 				   const struct cpumask *cpumask, bool force);
 extern int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info);
@@ -709,10 +710,11 @@ extern struct irq_chip no_irq_chip;
 extern struct irq_chip dummy_irq_chip;
 
 extern void
-irq_set_chip_and_handler_name(unsigned int irq, struct irq_chip *chip,
+irq_set_chip_and_handler_name(unsigned int irq, const struct irq_chip *chip,
 			      irq_flow_handler_t handle, const char *name);
 
-static inline void irq_set_chip_and_handler(unsigned int irq, struct irq_chip *chip,
+static inline void irq_set_chip_and_handler(unsigned int irq,
+					    const struct irq_chip *chip,
 					    irq_flow_handler_t handle)
 {
 	irq_set_chip_and_handler_name(irq, chip, handle, NULL);
@@ -802,7 +804,7 @@ static inline void irq_set_percpu_devid_flags(unsigned int irq)
 }
 
 /* Set/get chip/data for an IRQ: */
-extern int irq_set_chip(unsigned int irq, struct irq_chip *chip);
+extern int irq_set_chip(unsigned int irq, const struct irq_chip *chip);
 extern int irq_set_handler_data(unsigned int irq, void *data);
 extern int irq_set_chip_data(unsigned int irq, void *data);
 extern int irq_set_irq_type(unsigned int irq, unsigned int type);
@@ -1261,6 +1263,7 @@ int __init set_handle_irq(void (*handle_irq)(struct pt_regs *));
  * top-level IRQ handler.
  */
 extern void (*handle_arch_irq)(struct pt_regs *) __ro_after_init;
+asmlinkage void generic_handle_arch_irq(struct pt_regs *regs);
 #else
 #ifndef set_handle_irq
 #define set_handle_irq(handle_irq)		\
diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h
index ec2a47a81e42..8cd11a223260 100644
--- a/include/linux/irq_work.h
+++ b/include/linux/irq_work.h
@@ -3,6 +3,7 @@
 #define _LINUX_IRQ_WORK_H
 
 #include <linux/smp_types.h>
+#include <linux/rcuwait.h>
 
 /*
  * An entry can be in one of four states:
@@ -16,11 +17,13 @@
 struct irq_work {
 	struct __call_single_node node;
 	void (*func)(struct irq_work *);
+	struct rcuwait irqwait;
 };
 
 #define __IRQ_WORK_INIT(_func, _flags) (struct irq_work){	\
 	.node = { .u_flags = (_flags), },			\
 	.func = (_func),					\
+	.irqwait = __RCUWAIT_INITIALIZER(irqwait),		\
 }
 
 #define IRQ_WORK_INIT(_func) __IRQ_WORK_INIT(_func, 0)
@@ -46,6 +49,11 @@ static inline bool irq_work_is_busy(struct irq_work *work)
 	return atomic_read(&work->node.a_flags) & IRQ_WORK_BUSY;
 }
 
+static inline bool irq_work_is_hard(struct irq_work *work)
+{
+	return atomic_read(&work->node.a_flags) & IRQ_WORK_HARD_IRQ;
+}
+
 bool irq_work_queue(struct irq_work *work);
 bool irq_work_queue_on(struct irq_work *work, int cpu);
 
diff --git a/include/linux/irqchip.h b/include/linux/irqchip.h
index 67351aac65ef..3a091d0710ae 100644
--- a/include/linux/irqchip.h
+++ b/include/linux/irqchip.h
@@ -14,8 +14,15 @@
 #include <linux/acpi.h>
 #include <linux/module.h>
 #include <linux/of.h>
+#include <linux/of_irq.h>
 #include <linux/platform_device.h>
 
+/* Undefined on purpose */
+extern of_irq_init_cb_t typecheck_irq_init_cb;
+
+#define typecheck_irq_init_cb(fn)					\
+	(__typecheck(typecheck_irq_init_cb, &fn) ? fn : fn)
+
 /*
  * This macro must be used by the different irqchip drivers to declare
  * the association between their DT compatible string and their
@@ -23,24 +30,27 @@
  *
  * @name: name that must be unique across all IRQCHIP_DECLARE of the
  * same file.
- * @compstr: compatible string of the irqchip driver
+ * @compat: compatible string of the irqchip driver
  * @fn: initialization function
  */
-#define IRQCHIP_DECLARE(name, compat, fn) OF_DECLARE_2(irqchip, name, compat, fn)
+#define IRQCHIP_DECLARE(name, compat, fn)	\
+	OF_DECLARE_2(irqchip, name, compat, typecheck_irq_init_cb(fn))
 
 extern int platform_irqchip_probe(struct platform_device *pdev);
 
 #define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \
 static const struct of_device_id drv_name##_irqchip_match_table[] = {
 
-#define IRQCHIP_MATCH(compat, fn) { .compatible = compat, .data = fn },
+#define IRQCHIP_MATCH(compat, fn) { .compatible = compat,		\
+				    .data = typecheck_irq_init_cb(fn), },
 
 #define IRQCHIP_PLATFORM_DRIVER_END(drv_name)				\
 	{},								\
 };									\
 MODULE_DEVICE_TABLE(of, drv_name##_irqchip_match_table);		\
-static struct platform_driver drv_name##_driver = {		\
-	.probe  = platform_irqchip_probe,				\
+static struct platform_driver drv_name##_driver = {			\
+	.probe  = IS_ENABLED(CONFIG_IRQCHIP) ? 				\
+			platform_irqchip_probe : NULL,			\
 	.driver = {							\
 		.name = #drv_name,					\
 		.owner = THIS_MODULE,					\
diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h
index 81cbf85f73de..12d91f0dedf9 100644
--- a/include/linux/irqchip/arm-gic-v3.h
+++ b/include/linux/irqchip/arm-gic-v3.h
@@ -615,7 +615,7 @@ struct rdists {
 		void __iomem	*rd_base;
 		struct page	*pend_page;
 		phys_addr_t	phys_base;
-		bool		lpi_enabled;
+		u64             flags;
 		cpumask_t	*vpe_table_mask;
 		void		*vpe_l1_base;
 	} __percpu		*rdist;
@@ -624,6 +624,7 @@ struct rdists {
 	u64			flags;
 	u32			gicd_typer;
 	u32			gicd_typer2;
+	int                     cpuhp_memreserve_state;
 	bool			has_vlpis;
 	bool			has_rvpeid;
 	bool			has_direct_lpi;
@@ -632,6 +633,7 @@ struct rdists {
 
 struct irq_domain;
 struct fwnode_handle;
+int __init its_lpi_memreserve_init(void);
 int its_cpu_init(void);
 int its_init(struct fwnode_handle *handle, struct rdists *rdists,
 	     struct irq_domain *domain);
diff --git a/include/linux/irqchip/versatile-fpga.h b/include/linux/irqchip/versatile-fpga.h
deleted file mode 100644
index a978fc8c7996..000000000000
--- a/include/linux/irqchip/versatile-fpga.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef PLAT_FPGA_IRQ_H
-#define PLAT_FPGA_IRQ_H
-
-struct device_node;
-struct pt_regs;
-
-void fpga_handle_irq(struct pt_regs *regs);
-void fpga_irq_init(void __iomem *, const char *, int, int, u32,
-		struct device_node *node);
-int fpga_irq_of_init(struct device_node *node,
-		     struct device_node *parent);
-
-#endif
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index 59aea39785bf..a77584593f7d 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -160,6 +160,7 @@ static inline void generic_handle_irq_desc(struct irq_desc *desc)
 
 int handle_irq_desc(struct irq_desc *desc);
 int generic_handle_irq(unsigned int irq);
+int generic_handle_irq_safe(unsigned int irq);
 
 #ifdef CONFIG_IRQ_DOMAIN
 /*
@@ -168,14 +169,7 @@ int generic_handle_irq(unsigned int irq);
  * conversion failed.
  */
 int generic_handle_domain_irq(struct irq_domain *domain, unsigned int hwirq);
-
-#ifdef CONFIG_HANDLE_DOMAIN_IRQ
-int handle_domain_irq(struct irq_domain *domain,
-		      unsigned int hwirq, struct pt_regs *regs);
-
-int handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq,
-		      struct pt_regs *regs);
-#endif
+int generic_handle_domain_nmi(struct irq_domain *domain, unsigned int hwirq);
 #endif
 
 /* Test to see if a driver has successfully requested an irq */
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 9ee238ad29ce..00d577f90883 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -64,6 +64,10 @@ struct irq_fwspec {
 	u32 param[IRQ_DOMAIN_IRQ_SPEC_PARAMS];
 };
 
+/* Conversion function from of_phandle_args fields to fwspec  */
+void of_phandle_args_to_fwspec(struct device_node *np, const u32 *args,
+			       unsigned int count, struct irq_fwspec *fwspec);
+
 /*
  * Should several domains have the same device node, but serve
  * different purposes (for example one domain is for PCI/MSI, and the
@@ -127,7 +131,7 @@ struct irq_domain_ops {
 #endif
 };
 
-extern struct irq_domain_ops irq_generic_chip_ops;
+extern const struct irq_domain_ops irq_generic_chip_ops;
 
 struct irq_domain_chip_generic;
 
@@ -147,6 +151,8 @@ struct irq_domain_chip_generic;
  * @gc: Pointer to a list of generic chips. There is a helper function for
  *      setting up one or more generic chips for interrupt controllers
  *      drivers using the generic chip library which uses this pointer.
+ * @dev: Pointer to a device that the domain represent, and that will be
+ *       used for power management purposes.
  * @parent: Pointer to parent irq_domain to support hierarchy irq_domains
  *
  * Revmap data, used internally by irq_domain
@@ -167,6 +173,7 @@ struct irq_domain {
 	struct fwnode_handle *fwnode;
 	enum irq_domain_bus_token bus_token;
 	struct irq_domain_chip_generic *gc;
+	struct device *dev;
 #ifdef	CONFIG_IRQ_DOMAIN_HIERARCHY
 	struct irq_domain *parent;
 #endif
@@ -222,6 +229,13 @@ static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
 	return to_of_node(d->fwnode);
 }
 
+static inline void irq_domain_set_pm_device(struct irq_domain *d,
+					    struct device *dev)
+{
+	if (d)
+		d->dev = dev;
+}
+
 #ifdef CONFIG_IRQ_DOMAIN
 struct fwnode_handle *__irq_domain_alloc_fwnode(unsigned int type, int id,
 						const char *name, phys_addr_t *pa);
@@ -465,7 +479,8 @@ int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
 extern struct irq_data *irq_domain_get_irq_data(struct irq_domain *domain,
 						unsigned int virq);
 extern void irq_domain_set_info(struct irq_domain *domain, unsigned int virq,
-				irq_hw_number_t hwirq, struct irq_chip *chip,
+				irq_hw_number_t hwirq,
+				const struct irq_chip *chip,
 				void *chip_data, irq_flow_handler_t handler,
 				void *handler_data, const char *handler_name);
 extern void irq_domain_reset_irq_data(struct irq_data *irq_data);
@@ -508,7 +523,7 @@ extern int irq_domain_alloc_irqs_hierarchy(struct irq_domain *domain,
 extern int irq_domain_set_hwirq_and_chip(struct irq_domain *domain,
 					 unsigned int virq,
 					 irq_hw_number_t hwirq,
-					 struct irq_chip *chip,
+					 const struct irq_chip *chip,
 					 void *chip_data);
 extern void irq_domain_free_irqs_common(struct irq_domain *domain,
 					unsigned int virq,
diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h
index 600c10da321a..4b140938b03e 100644
--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -71,14 +71,6 @@ do {						\
 do {						\
 	__this_cpu_dec(hardirq_context);	\
 } while (0)
-# define lockdep_softirq_enter()		\
-do {						\
-	current->softirq_context++;		\
-} while (0)
-# define lockdep_softirq_exit()			\
-do {						\
-	current->softirq_context--;		\
-} while (0)
 
 # define lockdep_hrtimer_enter(__hrtimer)		\
 ({							\
@@ -140,6 +132,21 @@ do {						\
 # define lockdep_irq_work_exit(__work)		do { } while (0)
 #endif
 
+#if defined(CONFIG_TRACE_IRQFLAGS) && !defined(CONFIG_PREEMPT_RT)
+# define lockdep_softirq_enter()		\
+do {						\
+	current->softirq_context++;		\
+} while (0)
+# define lockdep_softirq_exit()			\
+do {						\
+	current->softirq_context--;		\
+} while (0)
+
+#else
+# define lockdep_softirq_enter()		do { } while (0)
+# define lockdep_softirq_exit()			do { } while (0)
+#endif
+
 #if defined(CONFIG_IRQSOFF_TRACER) || \
 	defined(CONFIG_PREEMPT_TRACER)
  extern void stop_critical_timings(void);
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index fd933c45281a..de9536680b2b 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -554,9 +554,6 @@ struct transaction_chp_stats_s {
  *    ->j_list_lock
  *
  *    j_state_lock
- *    ->t_handle_lock
- *
- *    j_state_lock
  *    ->j_list_lock			(journal_unmap_buffer)
  *
  */
@@ -594,7 +591,7 @@ struct transaction_s
 	 */
 	unsigned long		t_log_start;
 
-	/* 
+	/*
 	 * Number of buffers on the t_buffers list [j_list_lock, no locks
 	 * needed for jbd2 thread]
 	 */
@@ -1295,7 +1292,7 @@ struct journal_s
 	 * Clean-up after fast commit or full commit. JBD2 calls this function
 	 * after every commit operation.
 	 */
-	void (*j_fc_cleanup_callback)(struct journal_s *journal, int);
+	void (*j_fc_cleanup_callback)(struct journal_s *journal, int full, tid_t tid);
 
 	/**
 	 * @j_fc_replay_callback:
@@ -1419,9 +1416,7 @@ extern void jbd2_journal_unfile_buffer(journal_t *, struct journal_head *);
 extern bool __jbd2_journal_refile_buffer(struct journal_head *);
 extern void jbd2_journal_refile_buffer(journal_t *, struct journal_head *);
 extern void __jbd2_journal_file_buffer(struct journal_head *, transaction_t *, int);
-extern void __journal_free_buffer(struct journal_head *bh);
 extern void jbd2_journal_file_buffer(struct journal_head *, transaction_t *, int);
-extern void __journal_clean_data_list(transaction_t *transaction);
 static inline void jbd2_file_log_bh(struct list_head *head, struct buffer_head *bh)
 {
 	list_add_tail(&bh->b_assoc_buffers, head);
@@ -1486,9 +1481,6 @@ extern int jbd2_journal_write_metadata_buffer(transaction_t *transaction,
 					      struct buffer_head **bh_out,
 					      sector_t blocknr);
 
-/* Transaction locking */
-extern void		__wait_on_journal (journal_t *);
-
 /* Transaction cache support */
 extern void jbd2_journal_destroy_transaction_cache(void);
 extern int __init jbd2_journal_init_transaction_cache(void);
@@ -1535,14 +1527,16 @@ void		 jbd2_journal_set_triggers(struct buffer_head *,
 					   struct jbd2_buffer_trigger_type *type);
 extern int	 jbd2_journal_dirty_metadata (handle_t *, struct buffer_head *);
 extern int	 jbd2_journal_forget (handle_t *, struct buffer_head *);
-extern int	 jbd2_journal_invalidatepage(journal_t *,
-				struct page *, unsigned int, unsigned int);
+int jbd2_journal_invalidate_folio(journal_t *, struct folio *,
+					size_t offset, size_t length);
 extern int	 jbd2_journal_try_to_free_buffers(journal_t *journal, struct page *page);
 extern int	 jbd2_journal_stop(handle_t *);
 extern int	 jbd2_journal_flush(journal_t *journal, unsigned int flags);
 extern void	 jbd2_journal_lock_updates (journal_t *);
 extern void	 jbd2_journal_unlock_updates (journal_t *);
 
+void jbd2_journal_wait_updates(journal_t *);
+
 extern journal_t * jbd2_journal_init_dev(struct block_device *bdev,
 				struct block_device *fs_dev,
 				unsigned long long start, int len, int bsize);
@@ -1774,8 +1768,6 @@ static inline unsigned long jbd2_log_space_left(journal_t *journal)
 #define BJ_Reserved	4	/* Buffer is reserved for access by journal */
 #define BJ_Types	5
 
-extern int jbd_blocks_per_page(struct inode *inode);
-
 /* JBD uses a CRC32 checksum */
 #define JBD_MAX_CHECKSUM_SIZE 4
 
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h
index 48b9b2a82767..107751cc047b 100644
--- a/include/linux/jump_label.h
+++ b/include/linux/jump_label.h
@@ -82,10 +82,9 @@ extern bool static_key_initialized;
 				    "%s(): static key '%pS' used before call to jump_label_init()", \
 				    __func__, (key))
 
-#ifdef CONFIG_JUMP_LABEL
-
 struct static_key {
 	atomic_t enabled;
+#ifdef CONFIG_JUMP_LABEL
 /*
  * Note:
  *   To make anonymous unions work with old compilers, the static
@@ -104,13 +103,9 @@ struct static_key {
 		struct jump_entry *entries;
 		struct static_key_mod *next;
 	};
+#endif	/* CONFIG_JUMP_LABEL */
 };
 
-#else
-struct static_key {
-	atomic_t enabled;
-};
-#endif	/* CONFIG_JUMP_LABEL */
 #endif /* __ASSEMBLY__ */
 
 #ifdef CONFIG_JUMP_LABEL
@@ -251,10 +246,10 @@ extern void static_key_disable_cpuslocked(struct static_key *key);
  */
 #define STATIC_KEY_INIT_TRUE					\
 	{ .enabled = { 1 },					\
-	  { .entries = (void *)JUMP_TYPE_TRUE } }
+	  { .type = JUMP_TYPE_TRUE } }
 #define STATIC_KEY_INIT_FALSE					\
 	{ .enabled = { 0 },					\
-	  { .entries = (void *)JUMP_TYPE_FALSE } }
+	  { .type = JUMP_TYPE_FALSE } }
 
 #else  /* !CONFIG_JUMP_LABEL */
 
diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
index a1d6fc82d7f0..ce1bd2fbf23e 100644
--- a/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h
@@ -24,25 +24,16 @@
 struct cred;
 struct module;
 
-static inline int is_kernel_inittext(unsigned long addr)
-{
-	if (addr >= (unsigned long)_sinittext
-	    && addr <= (unsigned long)_einittext)
-		return 1;
-	return 0;
-}
-
 static inline int is_kernel_text(unsigned long addr)
 {
-	if ((addr >= (unsigned long)_stext && addr <= (unsigned long)_etext) ||
-	    arch_is_kernel_text(addr))
+	if (__is_kernel_text(addr))
 		return 1;
 	return in_gate_area_no_mm(addr);
 }
 
 static inline int is_kernel(unsigned long addr)
 {
-	if (addr >= (unsigned long)_stext && addr <= (unsigned long)_end)
+	if (__is_kernel(addr))
 		return 1;
 	return in_gate_area_no_mm(addr);
 }
@@ -57,7 +48,7 @@ static inline int is_ksym_addr(unsigned long addr)
 
 static inline void *dereference_symbol_descriptor(void *ptr)
 {
-#ifdef HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR
+#ifdef CONFIG_HAVE_FUNCTION_DESCRIPTORS
 	struct module *mod;
 
 	ptr = dereference_kernel_function_descriptor(ptr);
diff --git a/include/linux/kasan-enabled.h b/include/linux/kasan-enabled.h
new file mode 100644
index 000000000000..6f612d69ea0c
--- /dev/null
+++ b/include/linux/kasan-enabled.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_KASAN_ENABLED_H
+#define _LINUX_KASAN_ENABLED_H
+
+#include <linux/static_key.h>
+
+#ifdef CONFIG_KASAN_HW_TAGS
+
+DECLARE_STATIC_KEY_FALSE(kasan_flag_enabled);
+
+static __always_inline bool kasan_enabled(void)
+{
+	return static_branch_likely(&kasan_flag_enabled);
+}
+
+static inline bool kasan_hw_tags_enabled(void)
+{
+	return kasan_enabled();
+}
+
+#else /* CONFIG_KASAN_HW_TAGS */
+
+static inline bool kasan_enabled(void)
+{
+	return IS_ENABLED(CONFIG_KASAN);
+}
+
+static inline bool kasan_hw_tags_enabled(void)
+{
+	return false;
+}
+
+#endif /* CONFIG_KASAN_HW_TAGS */
+
+#endif /* LINUX_KASAN_ENABLED_H */
diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index dd874a1ee862..ceebcb9de7bf 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -3,12 +3,14 @@
 #define _LINUX_KASAN_H
 
 #include <linux/bug.h>
+#include <linux/kasan-enabled.h>
 #include <linux/kernel.h>
 #include <linux/static_key.h>
 #include <linux/types.h>
 
 struct kmem_cache;
 struct page;
+struct slab;
 struct vm_struct;
 struct task_struct;
 
@@ -17,13 +19,15 @@ struct task_struct;
 #include <linux/linkage.h>
 #include <asm/kasan.h>
 
-/* kasan_data struct is used in KUnit tests for KASAN expected failures */
-struct kunit_kasan_expectation {
-	bool report_found;
-};
-
 #endif
 
+typedef unsigned int __bitwise kasan_vmalloc_flags_t;
+
+#define KASAN_VMALLOC_NONE		0x00u
+#define KASAN_VMALLOC_INIT		0x01u
+#define KASAN_VMALLOC_VM_ALLOC		0x02u
+#define KASAN_VMALLOC_PROT_NORMAL	0x04u
+
 #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
 
 #include <linux/pgtable.h>
@@ -82,49 +86,15 @@ static inline void kasan_disable_current(void) {}
 
 #ifdef CONFIG_KASAN_HW_TAGS
 
-DECLARE_STATIC_KEY_FALSE(kasan_flag_enabled);
-
-static __always_inline bool kasan_enabled(void)
-{
-	return static_branch_likely(&kasan_flag_enabled);
-}
-
-static inline bool kasan_has_integrated_init(void)
-{
-	return kasan_enabled();
-}
-
-void kasan_alloc_pages(struct page *page, unsigned int order, gfp_t flags);
-void kasan_free_pages(struct page *page, unsigned int order);
-
 #else /* CONFIG_KASAN_HW_TAGS */
 
-static inline bool kasan_enabled(void)
-{
-	return IS_ENABLED(CONFIG_KASAN);
-}
+#endif /* CONFIG_KASAN_HW_TAGS */
 
 static inline bool kasan_has_integrated_init(void)
 {
-	return false;
-}
-
-static __always_inline void kasan_alloc_pages(struct page *page,
-					      unsigned int order, gfp_t flags)
-{
-	/* Only available for integrated init. */
-	BUILD_BUG();
-}
-
-static __always_inline void kasan_free_pages(struct page *page,
-					     unsigned int order)
-{
-	/* Only available for integrated init. */
-	BUILD_BUG();
+	return kasan_hw_tags_enabled();
 }
 
-#endif /* CONFIG_KASAN_HW_TAGS */
-
 #ifdef CONFIG_KASAN
 
 struct kasan_cache {
@@ -188,11 +158,11 @@ static __always_inline size_t kasan_metadata_size(struct kmem_cache *cache)
 	return 0;
 }
 
-void __kasan_poison_slab(struct page *page);
-static __always_inline void kasan_poison_slab(struct page *page)
+void __kasan_poison_slab(struct slab *slab);
+static __always_inline void kasan_poison_slab(struct slab *slab)
 {
 	if (kasan_enabled())
-		__kasan_poison_slab(page);
+		__kasan_poison_slab(slab);
 }
 
 void __kasan_unpoison_object_data(struct kmem_cache *cache, void *object);
@@ -297,10 +267,6 @@ static __always_inline bool kasan_check_byte(const void *addr)
 	return true;
 }
 
-
-bool kasan_save_enable_multi_shot(void);
-void kasan_restore_multi_shot(bool enabled);
-
 #else /* CONFIG_KASAN */
 
 static inline slab_flags_t kasan_never_merge(void)
@@ -317,7 +283,7 @@ static inline void kasan_cache_create(struct kmem_cache *cache,
 				      slab_flags_t *flags) {}
 static inline void kasan_cache_create_kmalloc(struct kmem_cache *cache) {}
 static inline size_t kasan_metadata_size(struct kmem_cache *cache) { return 0; }
-static inline void kasan_poison_slab(struct page *page) {}
+static inline void kasan_poison_slab(struct slab *slab) {}
 static inline void kasan_unpoison_object_data(struct kmem_cache *cache,
 					void *object) {}
 static inline void kasan_poison_object_data(struct kmem_cache *cache,
@@ -370,12 +336,14 @@ static inline void kasan_unpoison_task_stack(struct task_struct *task) {}
 void kasan_cache_shrink(struct kmem_cache *cache);
 void kasan_cache_shutdown(struct kmem_cache *cache);
 void kasan_record_aux_stack(void *ptr);
+void kasan_record_aux_stack_noalloc(void *ptr);
 
 #else /* CONFIG_KASAN_GENERIC */
 
 static inline void kasan_cache_shrink(struct kmem_cache *cache) {}
 static inline void kasan_cache_shutdown(struct kmem_cache *cache) {}
 static inline void kasan_record_aux_stack(void *ptr) {}
+static inline void kasan_record_aux_stack_noalloc(void *ptr) {}
 
 #endif /* CONFIG_KASAN_GENERIC */
 
@@ -427,29 +395,72 @@ static inline void kasan_init_hw_tags(void) { }
 
 #ifdef CONFIG_KASAN_VMALLOC
 
+#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
+
+void kasan_populate_early_vm_area_shadow(void *start, unsigned long size);
 int kasan_populate_vmalloc(unsigned long addr, unsigned long size);
-void kasan_poison_vmalloc(const void *start, unsigned long size);
-void kasan_unpoison_vmalloc(const void *start, unsigned long size);
 void kasan_release_vmalloc(unsigned long start, unsigned long end,
 			   unsigned long free_region_start,
 			   unsigned long free_region_end);
 
-#else /* CONFIG_KASAN_VMALLOC */
+#else /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
 
+static inline void kasan_populate_early_vm_area_shadow(void *start,
+						       unsigned long size)
+{ }
 static inline int kasan_populate_vmalloc(unsigned long start,
 					unsigned long size)
 {
 	return 0;
 }
+static inline void kasan_release_vmalloc(unsigned long start,
+					 unsigned long end,
+					 unsigned long free_region_start,
+					 unsigned long free_region_end) { }
 
-static inline void kasan_poison_vmalloc(const void *start, unsigned long size)
-{ }
-static inline void kasan_unpoison_vmalloc(const void *start, unsigned long size)
-{ }
+#endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
+
+void *__kasan_unpoison_vmalloc(const void *start, unsigned long size,
+			       kasan_vmalloc_flags_t flags);
+static __always_inline void *kasan_unpoison_vmalloc(const void *start,
+						unsigned long size,
+						kasan_vmalloc_flags_t flags)
+{
+	if (kasan_enabled())
+		return __kasan_unpoison_vmalloc(start, size, flags);
+	return (void *)start;
+}
+
+void __kasan_poison_vmalloc(const void *start, unsigned long size);
+static __always_inline void kasan_poison_vmalloc(const void *start,
+						 unsigned long size)
+{
+	if (kasan_enabled())
+		__kasan_poison_vmalloc(start, size);
+}
+
+#else /* CONFIG_KASAN_VMALLOC */
+
+static inline void kasan_populate_early_vm_area_shadow(void *start,
+						       unsigned long size) { }
+static inline int kasan_populate_vmalloc(unsigned long start,
+					unsigned long size)
+{
+	return 0;
+}
 static inline void kasan_release_vmalloc(unsigned long start,
 					 unsigned long end,
 					 unsigned long free_region_start,
-					 unsigned long free_region_end) {}
+					 unsigned long free_region_end) { }
+
+static inline void *kasan_unpoison_vmalloc(const void *start,
+					   unsigned long size,
+					   kasan_vmalloc_flags_t flags)
+{
+	return (void *)start;
+}
+static inline void kasan_poison_vmalloc(const void *start, unsigned long size)
+{ }
 
 #endif /* CONFIG_KASAN_VMALLOC */
 
@@ -457,17 +468,17 @@ static inline void kasan_release_vmalloc(unsigned long start,
 		!defined(CONFIG_KASAN_VMALLOC)
 
 /*
- * These functions provide a special case to support backing module
- * allocations with real shadow memory. With KASAN vmalloc, the special
- * case is unnecessary, as the work is handled in the generic case.
+ * These functions allocate and free shadow memory for kernel modules.
+ * They are only required when KASAN_VMALLOC is not supported, as otherwise
+ * shadow memory is allocated by the generic vmalloc handlers.
  */
-int kasan_module_alloc(void *addr, size_t size);
-void kasan_free_shadow(const struct vm_struct *vm);
+int kasan_alloc_module_shadow(void *addr, size_t size, gfp_t gfp_mask);
+void kasan_free_module_shadow(const struct vm_struct *vm);
 
 #else /* (CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS) && !CONFIG_KASAN_VMALLOC */
 
-static inline int kasan_module_alloc(void *addr, size_t size) { return 0; }
-static inline void kasan_free_shadow(const struct vm_struct *vm) {}
+static inline int kasan_alloc_module_shadow(void *addr, size_t size, gfp_t gfp_mask) { return 0; }
+static inline void kasan_free_module_shadow(const struct vm_struct *vm) {}
 
 #endif /* (CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS) && !CONFIG_KASAN_VMALLOC */
 
diff --git a/include/linux/kcsan-checks.h b/include/linux/kcsan-checks.h
index 9fd0ad80fef6..92f3843d9ebb 100644
--- a/include/linux/kcsan-checks.h
+++ b/include/linux/kcsan-checks.h
@@ -36,6 +36,36 @@
  */
 void __kcsan_check_access(const volatile void *ptr, size_t size, int type);
 
+/*
+ * See definition of __tsan_atomic_signal_fence() in kernel/kcsan/core.c.
+ * Note: The mappings are arbitrary, and do not reflect any real mappings of C11
+ * memory orders to the LKMM memory orders and vice-versa!
+ */
+#define __KCSAN_BARRIER_TO_SIGNAL_FENCE_mb	__ATOMIC_SEQ_CST
+#define __KCSAN_BARRIER_TO_SIGNAL_FENCE_wmb	__ATOMIC_ACQ_REL
+#define __KCSAN_BARRIER_TO_SIGNAL_FENCE_rmb	__ATOMIC_ACQUIRE
+#define __KCSAN_BARRIER_TO_SIGNAL_FENCE_release	__ATOMIC_RELEASE
+
+/**
+ * __kcsan_mb - full memory barrier instrumentation
+ */
+void __kcsan_mb(void);
+
+/**
+ * __kcsan_wmb - write memory barrier instrumentation
+ */
+void __kcsan_wmb(void);
+
+/**
+ * __kcsan_rmb - read memory barrier instrumentation
+ */
+void __kcsan_rmb(void);
+
+/**
+ * __kcsan_release - release barrier instrumentation
+ */
+void __kcsan_release(void);
+
 /**
  * kcsan_disable_current - disable KCSAN for the current context
  *
@@ -99,10 +129,21 @@ void kcsan_set_access_mask(unsigned long mask);
 
 /* Scoped access information. */
 struct kcsan_scoped_access {
-	struct list_head list;
+	union {
+		struct list_head list; /* scoped_accesses list */
+		/*
+		 * Not an entry in scoped_accesses list; stack depth from where
+		 * the access was initialized.
+		 */
+		int stack_depth;
+	};
+
+	/* Access information. */
 	const volatile void *ptr;
 	size_t size;
 	int type;
+	/* Location where scoped access was set up. */
+	unsigned long ip;
 };
 /*
  * Automatically call kcsan_end_scoped_access() when kcsan_scoped_access goes
@@ -148,6 +189,10 @@ void kcsan_end_scoped_access(struct kcsan_scoped_access *sa);
 static inline void __kcsan_check_access(const volatile void *ptr, size_t size,
 					int type) { }
 
+static inline void __kcsan_mb(void)			{ }
+static inline void __kcsan_wmb(void)			{ }
+static inline void __kcsan_rmb(void)			{ }
+static inline void __kcsan_release(void)		{ }
 static inline void kcsan_disable_current(void)		{ }
 static inline void kcsan_enable_current(void)		{ }
 static inline void kcsan_enable_current_nowarn(void)	{ }
@@ -180,12 +225,47 @@ static inline void kcsan_end_scoped_access(struct kcsan_scoped_access *sa) { }
  */
 #define __kcsan_disable_current kcsan_disable_current
 #define __kcsan_enable_current kcsan_enable_current_nowarn
-#else
+#else /* __SANITIZE_THREAD__ */
 static inline void kcsan_check_access(const volatile void *ptr, size_t size,
 				      int type) { }
 static inline void __kcsan_enable_current(void)  { }
 static inline void __kcsan_disable_current(void) { }
-#endif
+#endif /* __SANITIZE_THREAD__ */
+
+#if defined(CONFIG_KCSAN_WEAK_MEMORY) && defined(__SANITIZE_THREAD__)
+/*
+ * Normal barrier instrumentation is not done via explicit calls, but by mapping
+ * to a repurposed __atomic_signal_fence(), which normally does not generate any
+ * real instructions, but is still intercepted by fsanitize=thread. This means,
+ * like any other compile-time instrumentation, barrier instrumentation can be
+ * disabled with the __no_kcsan function attribute.
+ *
+ * Also see definition of __tsan_atomic_signal_fence() in kernel/kcsan/core.c.
+ *
+ * These are all macros, like <asm/barrier.h>, since some architectures use them
+ * in non-static inline functions.
+ */
+#define __KCSAN_BARRIER_TO_SIGNAL_FENCE(name)					\
+	do {									\
+		barrier();							\
+		__atomic_signal_fence(__KCSAN_BARRIER_TO_SIGNAL_FENCE_##name);	\
+		barrier();							\
+	} while (0)
+#define kcsan_mb()	__KCSAN_BARRIER_TO_SIGNAL_FENCE(mb)
+#define kcsan_wmb()	__KCSAN_BARRIER_TO_SIGNAL_FENCE(wmb)
+#define kcsan_rmb()	__KCSAN_BARRIER_TO_SIGNAL_FENCE(rmb)
+#define kcsan_release()	__KCSAN_BARRIER_TO_SIGNAL_FENCE(release)
+#elif defined(CONFIG_KCSAN_WEAK_MEMORY) && defined(__KCSAN_INSTRUMENT_BARRIERS__)
+#define kcsan_mb	__kcsan_mb
+#define kcsan_wmb	__kcsan_wmb
+#define kcsan_rmb	__kcsan_rmb
+#define kcsan_release	__kcsan_release
+#else /* CONFIG_KCSAN_WEAK_MEMORY && ... */
+#define kcsan_mb()	do { } while (0)
+#define kcsan_wmb()	do { } while (0)
+#define kcsan_rmb()	do { } while (0)
+#define kcsan_release()	do { } while (0)
+#endif /* CONFIG_KCSAN_WEAK_MEMORY && ... */
 
 /**
  * __kcsan_check_read - check regular read access for races
diff --git a/include/linux/kcsan.h b/include/linux/kcsan.h
index fc266ecb2a4d..c07c71f5ba4f 100644
--- a/include/linux/kcsan.h
+++ b/include/linux/kcsan.h
@@ -21,6 +21,7 @@
  */
 struct kcsan_ctx {
 	int disable_count; /* disable counter */
+	int disable_scoped; /* disable scoped access counter */
 	int atomic_next; /* number of following atomic ops */
 
 	/*
@@ -48,8 +49,16 @@ struct kcsan_ctx {
 	 */
 	unsigned long access_mask;
 
-	/* List of scoped accesses. */
+	/* List of scoped accesses; likely to be empty. */
 	struct list_head scoped_accesses;
+
+#ifdef CONFIG_KCSAN_WEAK_MEMORY
+	/*
+	 * Scoped access for modeling access reordering to detect missing memory
+	 * barriers; only keep 1 to keep fast-path complexity manageable.
+	 */
+	struct kcsan_scoped_access reorder_access;
+#endif
 };
 
 /**
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 2776423a587e..fe6efb24d151 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -1,4 +1,13 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * NOTE:
+ *
+ * This header has combined a lot of unrelated to each other stuff.
+ * The process of splitting its content is in progress while keeping
+ * backward compatibility. That's why it's highly recommended NOT to
+ * include this header inside another header file, especially under
+ * generic or architectural include/ directory.
+ */
 #ifndef _LINUX_KERNEL_H
 #define _LINUX_KERNEL_H
 
@@ -9,6 +18,7 @@
 #include <linux/stddef.h>
 #include <linux/types.h>
 #include <linux/compiler.h>
+#include <linux/container_of.h>
 #include <linux/bitops.h>
 #include <linux/kstrtox.h>
 #include <linux/log2.h>
@@ -19,6 +29,7 @@
 #include <linux/printk.h>
 #include <linux/build_bug.h>
 #include <linux/static_call_types.h>
+#include <linux/instruction_pointer.h>
 #include <asm/byteorder.h>
 
 #include <uapi/linux/kernel.h>
@@ -52,11 +63,6 @@
 }					\
 )
 
-#define typeof_member(T, m)	typeof(((T*)0)->m)
-
-#define _RET_IP_		(unsigned long)__builtin_return_address(0)
-#define _THIS_IP_  ({ __label__ __here; __here: (unsigned long)&&__here; })
-
 /**
  * upper_32_bits - return bits 32-63 of a number
  * @n: the number we're accessing
@@ -88,12 +94,12 @@
 struct completion;
 struct user;
 
-#ifdef CONFIG_PREEMPT_VOLUNTARY
+#ifdef CONFIG_PREEMPT_VOLUNTARY_BUILD
 
 extern int __cond_resched(void);
 # define might_resched() __cond_resched()
 
-#elif defined(CONFIG_PREEMPT_DYNAMIC)
+#elif defined(CONFIG_PREEMPT_DYNAMIC) && defined(CONFIG_HAVE_PREEMPT_DYNAMIC_CALL)
 
 extern int __cond_resched(void);
 
@@ -104,6 +110,11 @@ static __always_inline void might_resched(void)
 	static_call_mod(might_resched)();
 }
 
+#elif defined(CONFIG_PREEMPT_DYNAMIC) && defined(CONFIG_HAVE_PREEMPT_DYNAMIC_KEY)
+
+extern int dynamic_might_resched(void);
+# define might_resched() dynamic_might_resched()
+
 #else
 
 # define might_resched() do { } while (0)
@@ -111,8 +122,8 @@ static __always_inline void might_resched(void)
 #endif /* CONFIG_PREEMPT_* */
 
 #ifdef CONFIG_DEBUG_ATOMIC_SLEEP
-extern void ___might_sleep(const char *file, int line, int preempt_offset);
-extern void __might_sleep(const char *file, int line, int preempt_offset);
+extern void __might_resched(const char *file, int line, unsigned int offsets);
+extern void __might_sleep(const char *file, int line);
 extern void __cant_sleep(const char *file, int line, int preempt_offset);
 extern void __cant_migrate(const char *file, int line);
 
@@ -129,7 +140,7 @@ extern void __cant_migrate(const char *file, int line);
  * supposed to.
  */
 # define might_sleep() \
-	do { __might_sleep(__FILE__, __LINE__, 0); might_resched(); } while (0)
+	do { __might_sleep(__FILE__, __LINE__); might_resched(); } while (0)
 /**
  * cant_sleep - annotation for functions that cannot sleep
  *
@@ -168,10 +179,9 @@ extern void __cant_migrate(const char *file, int line);
  */
 # define non_block_end() WARN_ON(current->non_block_count-- == 0)
 #else
-  static inline void ___might_sleep(const char *file, int line,
-				   int preempt_offset) { }
-  static inline void __might_sleep(const char *file, int line,
-				   int preempt_offset) { }
+  static inline void __might_resched(const char *file, int line,
+				     unsigned int offsets) { }
+static inline void __might_sleep(const char *file, int line) { }
 # define might_sleep() do { might_resched(); } while (0)
 # define cant_sleep() do { } while (0)
 # define cant_migrate()		do { } while (0)
@@ -191,7 +201,6 @@ static inline void might_fault(void) { }
 #endif
 
 void do_exit(long error_code) __noreturn;
-void complete_and_exit(struct completion *, long) __noreturn;
 
 extern int num_to_str(char *buf, int size,
 		      unsigned long long num, unsigned int width);
@@ -229,8 +238,6 @@ extern bool parse_option_str(const char *str, const char *option);
 extern char *next_arg(char *args, char **param, char **val);
 
 extern int core_kernel_text(unsigned long addr);
-extern int init_kernel_text(unsigned long addr);
-extern int core_kernel_data(unsigned long addr);
 extern int __kernel_text_address(unsigned long addr);
 extern int kernel_text_address(unsigned long addr);
 extern int func_ptr_is_kernel_text(void *ptr);
@@ -248,6 +255,7 @@ extern bool early_boot_irqs_disabled;
 extern enum system_states {
 	SYSTEM_BOOTING,
 	SYSTEM_SCHEDULING,
+	SYSTEM_FREEING_INITMEM,
 	SYSTEM_RUNNING,
 	SYSTEM_HALT,
 	SYSTEM_POWER_OFF,
@@ -277,7 +285,7 @@ static inline char *hex_byte_pack_upper(char *buf, u8 byte)
 	return buf;
 }
 
-extern int hex_to_bin(char ch);
+extern int hex_to_bin(unsigned char ch);
 extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
 extern char *bin2hex(char *dst, const void *src, size_t count);
 
@@ -483,36 +491,6 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
 #define __CONCAT(a, b) a ## b
 #define CONCATENATE(a, b) __CONCAT(a, b)
 
-/**
- * container_of - cast a member of a structure out to the containing structure
- * @ptr:	the pointer to the member.
- * @type:	the type of the container struct this is embedded in.
- * @member:	the name of the member within the struct.
- *
- */
-#define container_of(ptr, type, member) ({				\
-	void *__mptr = (void *)(ptr);					\
-	BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) &&	\
-			 !__same_type(*(ptr), void),			\
-			 "pointer type mismatch in container_of()");	\
-	((type *)(__mptr - offsetof(type, member))); })
-
-/**
- * container_of_safe - cast a member of a structure out to the containing structure
- * @ptr:	the pointer to the member.
- * @type:	the type of the container struct this is embedded in.
- * @member:	the name of the member within the struct.
- *
- * If IS_ERR_OR_NULL(ptr), ptr is returned unchanged.
- */
-#define container_of_safe(ptr, type, member) ({				\
-	void *__mptr = (void *)(ptr);					\
-	BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) &&	\
-			 !__same_type(*(ptr), void),			\
-			 "pointer type mismatch in container_of()");	\
-	IS_ERR_OR_NULL(__mptr) ? ERR_CAST(__mptr) :			\
-		((type *)(__mptr - offsetof(type, member))); })
-
 /* Rebuild everything on CONFIG_FTRACE_MCOUNT_RECORD */
 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
 # define REBUILD_DUE_TO_FTRACE_MCOUNT_RECORD
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index 44ae1a7eb9e3..69ae6b278464 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -102,6 +102,7 @@ extern void account_system_index_time(struct task_struct *, u64,
 				      enum cpu_usage_stat);
 extern void account_steal_time(u64);
 extern void account_idle_time(u64);
+extern u64 get_idle_time(struct kernel_cpustat *kcs, int cpu);
 
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
 static inline void account_process_tick(struct task_struct *tsk, int user)
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index 1093abf7c28c..e2ae15a6225e 100644
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -6,7 +6,6 @@
 #ifndef __LINUX_KERNFS_H
 #define __LINUX_KERNFS_H
 
-#include <linux/kernel.h>
 #include <linux/err.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
@@ -14,14 +13,18 @@
 #include <linux/lockdep.h>
 #include <linux/rbtree.h>
 #include <linux/atomic.h>
+#include <linux/bug.h>
+#include <linux/types.h>
 #include <linux/uidgid.h>
 #include <linux/wait.h>
+#include <linux/rwsem.h>
 
 struct file;
 struct dentry;
 struct iattr;
 struct seq_file;
 struct vm_area_struct;
+struct vm_operations_struct;
 struct super_block;
 struct file_system_type;
 struct poll_table_struct;
@@ -182,22 +185,7 @@ struct kernfs_syscall_ops {
 			 struct kernfs_root *root);
 };
 
-struct kernfs_root {
-	/* published fields */
-	struct kernfs_node	*kn;
-	unsigned int		flags;	/* KERNFS_ROOT_* flags */
-
-	/* private fields, do not use outside kernfs proper */
-	struct idr		ino_idr;
-	u32			last_id_lowbits;
-	u32			id_highbits;
-	struct kernfs_syscall_ops *syscall_ops;
-
-	/* list of kernfs_super_info of this root, protected by kernfs_rwsem */
-	struct list_head	supers;
-
-	wait_queue_head_t	deactivate_waitq;
-};
+struct kernfs_node *kernfs_root_to_node(struct kernfs_root *root);
 
 struct kernfs_open_file {
 	/* published fields */
@@ -269,10 +257,6 @@ struct kernfs_ops {
 			 struct poll_table_struct *pt);
 
 	int (*mmap)(struct kernfs_open_file *of, struct vm_area_struct *vma);
-
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-	struct lock_class_key	lockdep_key;
-#endif
 };
 
 /*
@@ -568,30 +552,6 @@ kernfs_create_dir(struct kernfs_node *parent, const char *name, umode_t mode,
 				    priv, NULL);
 }
 
-static inline struct kernfs_node *
-kernfs_create_file_ns(struct kernfs_node *parent, const char *name,
-		      umode_t mode, kuid_t uid, kgid_t gid,
-		      loff_t size, const struct kernfs_ops *ops,
-		      void *priv, const void *ns)
-{
-	struct lock_class_key *key = NULL;
-
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-	key = (struct lock_class_key *)&ops->lockdep_key;
-#endif
-	return __kernfs_create_file(parent, name, mode, uid, gid,
-				    size, ops, priv, ns, key);
-}
-
-static inline struct kernfs_node *
-kernfs_create_file(struct kernfs_node *parent, const char *name, umode_t mode,
-		   loff_t size, const struct kernfs_ops *ops, void *priv)
-{
-	return kernfs_create_file_ns(parent, name, mode,
-				     GLOBAL_ROOT_UID, GLOBAL_ROOT_GID,
-				     size, ops, priv, NULL);
-}
-
 static inline int kernfs_remove_by_name(struct kernfs_node *parent,
 					const char *name)
 {
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 0c994ae37729..58d1b58a971e 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -20,6 +20,12 @@
 
 #include <uapi/linux/kexec.h>
 
+/* Location of a reserved region to hold the crash kernel.
+ */
+extern struct resource crashk_res;
+extern struct resource crashk_low_res;
+extern note_buf_t __percpu *crash_notes;
+
 #ifdef CONFIG_KEXEC_CORE
 #include <linux/list.h>
 #include <linux/compat.h>
@@ -350,12 +356,6 @@ extern int kexec_load_disabled;
 #define KEXEC_FILE_FLAGS	(KEXEC_FILE_UNLOAD | KEXEC_FILE_ON_CRASH | \
 				 KEXEC_FILE_NO_INITRAMFS)
 
-/* Location of a reserved region to hold the crash kernel.
- */
-extern struct resource crashk_res;
-extern struct resource crashk_low_res;
-extern note_buf_t __percpu *crash_notes;
-
 /* flag to track if kexec reboot is in progress */
 extern bool kexec_in_progress;
 
diff --git a/include/linux/keyslot-manager.h b/include/linux/keyslot-manager.h
deleted file mode 100644
index a27605e2f826..000000000000
--- a/include/linux/keyslot-manager.h
+++ /dev/null
@@ -1,120 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Copyright 2019 Google LLC
- */
-
-#ifndef __LINUX_KEYSLOT_MANAGER_H
-#define __LINUX_KEYSLOT_MANAGER_H
-
-#include <linux/bio.h>
-#include <linux/blk-crypto.h>
-
-struct blk_keyslot_manager;
-
-/**
- * struct blk_ksm_ll_ops - functions to manage keyslots in hardware
- * @keyslot_program:	Program the specified key into the specified slot in the
- *			inline encryption hardware.
- * @keyslot_evict:	Evict key from the specified keyslot in the hardware.
- *			The key is provided so that e.g. dm layers can evict
- *			keys from the devices that they map over.
- *			Returns 0 on success, -errno otherwise.
- *
- * This structure should be provided by storage device drivers when they set up
- * a keyslot manager - this structure holds the function ptrs that the keyslot
- * manager will use to manipulate keyslots in the hardware.
- */
-struct blk_ksm_ll_ops {
-	int (*keyslot_program)(struct blk_keyslot_manager *ksm,
-			       const struct blk_crypto_key *key,
-			       unsigned int slot);
-	int (*keyslot_evict)(struct blk_keyslot_manager *ksm,
-			     const struct blk_crypto_key *key,
-			     unsigned int slot);
-};
-
-struct blk_keyslot_manager {
-	/*
-	 * The struct blk_ksm_ll_ops that this keyslot manager will use
-	 * to perform operations like programming and evicting keys on the
-	 * device
-	 */
-	struct blk_ksm_ll_ops ksm_ll_ops;
-
-	/*
-	 * The maximum number of bytes supported for specifying the data unit
-	 * number.
-	 */
-	unsigned int max_dun_bytes_supported;
-
-	/*
-	 * Array of size BLK_ENCRYPTION_MODE_MAX of bitmasks that represents
-	 * whether a crypto mode and data unit size are supported. The i'th
-	 * bit of crypto_mode_supported[crypto_mode] is set iff a data unit
-	 * size of (1 << i) is supported. We only support data unit sizes
-	 * that are powers of 2.
-	 */
-	unsigned int crypto_modes_supported[BLK_ENCRYPTION_MODE_MAX];
-
-	/* Device for runtime power management (NULL if none) */
-	struct device *dev;
-
-	/* Here onwards are *private* fields for internal keyslot manager use */
-
-	unsigned int num_slots;
-
-	/* Protects programming and evicting keys from the device */
-	struct rw_semaphore lock;
-
-	/* List of idle slots, with least recently used slot at front */
-	wait_queue_head_t idle_slots_wait_queue;
-	struct list_head idle_slots;
-	spinlock_t idle_slots_lock;
-
-	/*
-	 * Hash table which maps struct *blk_crypto_key to keyslots, so that we
-	 * can find a key's keyslot in O(1) time rather than O(num_slots).
-	 * Protected by 'lock'.
-	 */
-	struct hlist_head *slot_hashtable;
-	unsigned int log_slot_ht_size;
-
-	/* Per-keyslot data */
-	struct blk_ksm_keyslot *slots;
-};
-
-int blk_ksm_init(struct blk_keyslot_manager *ksm, unsigned int num_slots);
-
-int devm_blk_ksm_init(struct device *dev, struct blk_keyslot_manager *ksm,
-		      unsigned int num_slots);
-
-blk_status_t blk_ksm_get_slot_for_key(struct blk_keyslot_manager *ksm,
-				      const struct blk_crypto_key *key,
-				      struct blk_ksm_keyslot **slot_ptr);
-
-unsigned int blk_ksm_get_slot_idx(struct blk_ksm_keyslot *slot);
-
-void blk_ksm_put_slot(struct blk_ksm_keyslot *slot);
-
-bool blk_ksm_crypto_cfg_supported(struct blk_keyslot_manager *ksm,
-				  const struct blk_crypto_config *cfg);
-
-int blk_ksm_evict_key(struct blk_keyslot_manager *ksm,
-		      const struct blk_crypto_key *key);
-
-void blk_ksm_reprogram_all_keys(struct blk_keyslot_manager *ksm);
-
-void blk_ksm_destroy(struct blk_keyslot_manager *ksm);
-
-void blk_ksm_intersect_modes(struct blk_keyslot_manager *parent,
-			     const struct blk_keyslot_manager *child);
-
-void blk_ksm_init_passthrough(struct blk_keyslot_manager *ksm);
-
-bool blk_ksm_is_superset(struct blk_keyslot_manager *ksm_superset,
-			 struct blk_keyslot_manager *ksm_subset);
-
-void blk_ksm_update_capabilities(struct blk_keyslot_manager *target_ksm,
-				 struct blk_keyslot_manager *reference_ksm);
-
-#endif /* __LINUX_KEYSLOT_MANAGER_H */
diff --git a/include/linux/kfence.h b/include/linux/kfence.h
index 3fe6dd8a18c1..726857a4b680 100644
--- a/include/linux/kfence.h
+++ b/include/linux/kfence.h
@@ -14,6 +14,11 @@
 
 #ifdef CONFIG_KFENCE
 
+#include <linux/atomic.h>
+#include <linux/static_key.h>
+
+extern unsigned long kfence_sample_interval;
+
 /*
  * We allocate an even number of pages, as it simplifies calculations to map
  * address to metadata indices; effectively, the very first page serves as an
@@ -22,13 +27,8 @@
 #define KFENCE_POOL_SIZE ((CONFIG_KFENCE_NUM_OBJECTS + 1) * 2 * PAGE_SIZE)
 extern char *__kfence_pool;
 
-#ifdef CONFIG_KFENCE_STATIC_KEYS
-#include <linux/static_key.h>
 DECLARE_STATIC_KEY_FALSE(kfence_allocation_key);
-#else
-#include <linux/atomic.h>
 extern atomic_t kfence_allocation_gate;
-#endif
 
 /**
  * is_kfence_address() - check if an address belongs to KFENCE pool
@@ -116,13 +116,16 @@ void *__kfence_alloc(struct kmem_cache *s, size_t size, gfp_t flags);
  */
 static __always_inline void *kfence_alloc(struct kmem_cache *s, size_t size, gfp_t flags)
 {
-#ifdef CONFIG_KFENCE_STATIC_KEYS
-	if (static_branch_unlikely(&kfence_allocation_key))
+#if defined(CONFIG_KFENCE_STATIC_KEYS) || CONFIG_KFENCE_SAMPLE_INTERVAL == 0
+	if (!static_branch_unlikely(&kfence_allocation_key))
+		return NULL;
 #else
-	if (unlikely(!atomic_read(&kfence_allocation_gate)))
+	if (!static_branch_likely(&kfence_allocation_key))
+		return NULL;
 #endif
-		return __kfence_alloc(s, size, flags);
-	return NULL;
+	if (likely(atomic_read(&kfence_allocation_gate)))
+		return NULL;
+	return __kfence_alloc(s, size, flags);
 }
 
 /**
@@ -201,6 +204,22 @@ static __always_inline __must_check bool kfence_free(void *addr)
  */
 bool __must_check kfence_handle_page_fault(unsigned long addr, bool is_write, struct pt_regs *regs);
 
+#ifdef CONFIG_PRINTK
+struct kmem_obj_info;
+/**
+ * __kfence_obj_info() - fill kmem_obj_info struct
+ * @kpp: kmem_obj_info to be filled
+ * @object: the object
+ *
+ * Return:
+ * * false - not a KFENCE object
+ * * true - a KFENCE object, filled @kpp
+ *
+ * Copies information to @kpp for KFENCE objects.
+ */
+bool __kfence_obj_info(struct kmem_obj_info *kpp, void *object, struct slab *slab);
+#endif
+
 #else /* CONFIG_KFENCE */
 
 static inline bool is_kfence_address(const void *addr) { return false; }
@@ -218,6 +237,14 @@ static inline bool __must_check kfence_handle_page_fault(unsigned long addr, boo
 	return false;
 }
 
+#ifdef CONFIG_PRINTK
+struct kmem_obj_info;
+static inline bool __kfence_obj_info(struct kmem_obj_info *kpp, void *object, struct slab *slab)
+{
+	return false;
+}
+#endif
+
 #endif
 
 #endif /* _LINUX_KFENCE_H */
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index ea30529fba08..57fb972fea05 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -19,10 +19,10 @@
 #include <linux/list.h>
 #include <linux/sysfs.h>
 #include <linux/compiler.h>
+#include <linux/container_of.h>
 #include <linux/spinlock.h>
 #include <linux/kref.h>
 #include <linux/kobject_ns.h>
-#include <linux/kernel.h>
 #include <linux/wait.h>
 #include <linux/atomic.h>
 #include <linux/workqueue.h>
@@ -66,7 +66,7 @@ struct kobject {
 	struct list_head	entry;
 	struct kobject		*parent;
 	struct kset		*kset;
-	struct kobj_type	*ktype;
+	const struct kobj_type	*ktype;
 	struct kernfs_node	*sd; /* sysfs directory entry */
 	struct kref		kref;
 #ifdef CONFIG_DEBUG_KOBJECT_RELEASE
@@ -90,18 +90,17 @@ static inline const char *kobject_name(const struct kobject *kobj)
 	return kobj->name;
 }
 
-extern void kobject_init(struct kobject *kobj, struct kobj_type *ktype);
+extern void kobject_init(struct kobject *kobj, const struct kobj_type *ktype);
 extern __printf(3, 4) __must_check
 int kobject_add(struct kobject *kobj, struct kobject *parent,
 		const char *fmt, ...);
 extern __printf(4, 5) __must_check
 int kobject_init_and_add(struct kobject *kobj,
-			 struct kobj_type *ktype, struct kobject *parent,
+			 const struct kobj_type *ktype, struct kobject *parent,
 			 const char *fmt, ...);
 
 extern void kobject_del(struct kobject *kobj);
 
-extern struct kobject * __must_check kobject_create(void);
 extern struct kobject * __must_check kobject_create_and_add(const char *name,
 						struct kobject *parent);
 
@@ -118,27 +117,9 @@ extern void kobject_get_ownership(struct kobject *kobj,
 				  kuid_t *uid, kgid_t *gid);
 extern char *kobject_get_path(struct kobject *kobj, gfp_t flag);
 
-/**
- * kobject_has_children - Returns whether a kobject has children.
- * @kobj: the object to test
- *
- * This will return whether a kobject has other kobjects as children.
- *
- * It does NOT account for the presence of attribute files, only sub
- * directories. It also assumes there is no concurrent addition or
- * removal of such children, and thus relies on external locking.
- */
-static inline bool kobject_has_children(struct kobject *kobj)
-{
-	WARN_ON_ONCE(kref_read(&kobj->kref) == 0);
-
-	return kobj->sd && kobj->sd->dir.subdirs;
-}
-
 struct kobj_type {
 	void (*release)(struct kobject *kobj);
 	const struct sysfs_ops *sysfs_ops;
-	struct attribute **default_attrs;	/* use default_groups instead */
 	const struct attribute_group **default_groups;
 	const struct kobj_ns_type_operations *(*child_ns_type)(struct kobject *kobj);
 	const void *(*namespace)(struct kobject *kobj);
@@ -154,10 +135,9 @@ struct kobj_uevent_env {
 };
 
 struct kset_uevent_ops {
-	int (* const filter)(struct kset *kset, struct kobject *kobj);
-	const char *(* const name)(struct kset *kset, struct kobject *kobj);
-	int (* const uevent)(struct kset *kset, struct kobject *kobj,
-		      struct kobj_uevent_env *env);
+	int (* const filter)(struct kobject *kobj);
+	const char *(* const name)(struct kobject *kobj);
+	int (* const uevent)(struct kobject *kobj, struct kobj_uevent_env *env);
 };
 
 struct kobj_attribute {
@@ -218,7 +198,7 @@ static inline void kset_put(struct kset *k)
 	kobject_put(&k->kobj);
 }
 
-static inline struct kobj_type *get_ktype(struct kobject *kobj)
+static inline const struct kobj_type *get_ktype(struct kobject *kobj)
 {
 	return kobj->ktype;
 }
diff --git a/include/linux/kobject_api.h b/include/linux/kobject_api.h
new file mode 100644
index 000000000000..6e36a054c2d6
--- /dev/null
+++ b/include/linux/kobject_api.h
@@ -0,0 +1 @@
+#include <linux/kobject.h>
diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index e4f3bfe08757..157168769fc2 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -3,7 +3,6 @@
 #define _LINUX_KPROBES_H
 /*
  *  Kernel Probes (KProbes)
- *  include/linux/kprobes.h
  *
  * Copyright (C) IBM Corporation, 2002, 2004
  *
@@ -29,6 +28,7 @@
 #include <linux/ftrace.h>
 #include <linux/refcount.h>
 #include <linux/freelist.h>
+#include <linux/rethook.h>
 #include <asm/kprobes.h>
 
 #ifdef CONFIG_KPROBES
@@ -39,7 +39,7 @@
 #define KPROBE_REENTER		0x00000004
 #define KPROBE_HIT_SSDONE	0x00000008
 
-#else /* CONFIG_KPROBES */
+#else /* !CONFIG_KPROBES */
 #include <asm-generic/kprobes.h>
 typedef int kprobe_opcode_t;
 struct arch_specific_insn {
@@ -105,25 +105,25 @@ struct kprobe {
 #define KPROBE_FLAG_FTRACE	8 /* probe is using ftrace */
 
 /* Has this kprobe gone ? */
-static inline int kprobe_gone(struct kprobe *p)
+static inline bool kprobe_gone(struct kprobe *p)
 {
 	return p->flags & KPROBE_FLAG_GONE;
 }
 
 /* Is this kprobe disabled ? */
-static inline int kprobe_disabled(struct kprobe *p)
+static inline bool kprobe_disabled(struct kprobe *p)
 {
 	return p->flags & (KPROBE_FLAG_DISABLED | KPROBE_FLAG_GONE);
 }
 
 /* Is this kprobe really running optimized path ? */
-static inline int kprobe_optimized(struct kprobe *p)
+static inline bool kprobe_optimized(struct kprobe *p)
 {
 	return p->flags & KPROBE_FLAG_OPTIMIZED;
 }
 
 /* Is this kprobe uses ftrace ? */
-static inline int kprobe_ftrace(struct kprobe *p)
+static inline bool kprobe_ftrace(struct kprobe *p)
 {
 	return p->flags & KPROBE_FLAG_FTRACE;
 }
@@ -150,11 +150,20 @@ struct kretprobe {
 	int maxactive;
 	int nmissed;
 	size_t data_size;
+#ifdef CONFIG_KRETPROBE_ON_RETHOOK
+	struct rethook *rh;
+#else
 	struct freelist_head freelist;
 	struct kretprobe_holder *rph;
+#endif
 };
 
+#define KRETPROBE_MAX_DATA_SIZE	4096
+
 struct kretprobe_instance {
+#ifdef CONFIG_KRETPROBE_ON_RETHOOK
+	struct rethook_node node;
+#else
 	union {
 		struct freelist_node freelist;
 		struct rcu_head rcu;
@@ -163,6 +172,7 @@ struct kretprobe_instance {
 	struct kretprobe_holder *rph;
 	kprobe_opcode_t *ret_addr;
 	void *fp;
+#endif
 	char data[];
 };
 
@@ -181,31 +191,48 @@ struct kprobe_blacklist_entry {
 DECLARE_PER_CPU(struct kprobe *, current_kprobe);
 DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
 
-/*
- * For #ifdef avoidance:
- */
-static inline int kprobes_built_in(void)
-{
-	return 1;
-}
-
 extern void kprobe_busy_begin(void);
 extern void kprobe_busy_end(void);
 
 #ifdef CONFIG_KRETPROBES
+/* Check whether @p is used for implementing a trampoline. */
+extern int arch_trampoline_kprobe(struct kprobe *p);
+
+#ifdef CONFIG_KRETPROBE_ON_RETHOOK
+static nokprobe_inline struct kretprobe *get_kretprobe(struct kretprobe_instance *ri)
+{
+	RCU_LOCKDEP_WARN(!rcu_read_lock_any_held(),
+		"Kretprobe is accessed from instance under preemptive context");
+
+	return (struct kretprobe *)READ_ONCE(ri->node.rethook->data);
+}
+static nokprobe_inline unsigned long get_kretprobe_retaddr(struct kretprobe_instance *ri)
+{
+	return ri->node.ret_addr;
+}
+#else
 extern void arch_prepare_kretprobe(struct kretprobe_instance *ri,
 				   struct pt_regs *regs);
-extern int arch_trampoline_kprobe(struct kprobe *p);
+void arch_kretprobe_fixup_return(struct pt_regs *regs,
+				 kprobe_opcode_t *correct_ret_addr);
+
+void __kretprobe_trampoline(void);
+/*
+ * Since some architecture uses structured function pointer,
+ * use dereference_function_descriptor() to get real function address.
+ */
+static nokprobe_inline void *kretprobe_trampoline_addr(void)
+{
+	return dereference_kernel_function_descriptor(__kretprobe_trampoline);
+}
 
 /* If the trampoline handler called from a kprobe, use this version */
 unsigned long __kretprobe_trampoline_handler(struct pt_regs *regs,
-				void *trampoline_address,
-				void *frame_pointer);
+					     void *frame_pointer);
 
 static nokprobe_inline
 unsigned long kretprobe_trampoline_handler(struct pt_regs *regs,
-				void *trampoline_address,
-				void *frame_pointer)
+					   void *frame_pointer)
 {
 	unsigned long ret;
 	/*
@@ -214,7 +241,7 @@ unsigned long kretprobe_trampoline_handler(struct pt_regs *regs,
 	 * be running at this point.
 	 */
 	kprobe_busy_begin();
-	ret = __kretprobe_trampoline_handler(regs, trampoline_address, frame_pointer);
+	ret = __kretprobe_trampoline_handler(regs, frame_pointer);
 	kprobe_busy_end();
 
 	return ret;
@@ -228,7 +255,13 @@ static nokprobe_inline struct kretprobe *get_kretprobe(struct kretprobe_instance
 	return READ_ONCE(ri->rph->rp);
 }
 
-#else /* CONFIG_KRETPROBES */
+static nokprobe_inline unsigned long get_kretprobe_retaddr(struct kretprobe_instance *ri)
+{
+	return (unsigned long)ri->ret_addr;
+}
+#endif /* CONFIG_KRETPROBE_ON_RETHOOK */
+
+#else /* !CONFIG_KRETPROBES */
 static inline void arch_prepare_kretprobe(struct kretprobe *rp,
 					struct pt_regs *regs)
 {
@@ -239,11 +272,15 @@ static inline int arch_trampoline_kprobe(struct kprobe *p)
 }
 #endif /* CONFIG_KRETPROBES */
 
+/* Markers of '_kprobe_blacklist' section */
+extern unsigned long __start_kprobe_blacklist[];
+extern unsigned long __stop_kprobe_blacklist[];
+
 extern struct kretprobe_blackpoint kretprobe_blacklist[];
 
 #ifdef CONFIG_KPROBES_SANITY_TEST
 extern int init_test_probes(void);
-#else
+#else /* !CONFIG_KPROBES_SANITY_TEST */
 static inline int init_test_probes(void)
 {
 	return 0;
@@ -257,7 +294,6 @@ extern int arch_init_kprobes(void);
 extern void kprobes_inc_nmissed_count(struct kprobe *p);
 extern bool arch_within_kprobe_blacklist(unsigned long addr);
 extern int arch_populate_kprobe_blacklist(void);
-extern bool arch_kprobe_on_func_entry(unsigned long offset);
 extern int kprobe_on_func_entry(kprobe_opcode_t *addr, const char *sym, unsigned long offset);
 
 extern bool within_kprobe_blacklist(unsigned long addr);
@@ -303,7 +339,7 @@ static inline bool is_kprobe_##__name##_slot(unsigned long addr)	\
 #define KPROBE_OPTINSN_PAGE_SYM		"kprobe_optinsn_page"
 int kprobe_cache_get_kallsym(struct kprobe_insn_cache *c, unsigned int *symnum,
 			     unsigned long *value, char *type, char *sym);
-#else /* __ARCH_WANT_KPROBES_INSN_SLOT */
+#else /* !__ARCH_WANT_KPROBES_INSN_SLOT */
 #define DEFINE_INSN_CACHE_OPS(__name)					\
 static inline bool is_kprobe_##__name##_slot(unsigned long addr)	\
 {									\
@@ -334,29 +370,27 @@ extern void arch_unoptimize_kprobes(struct list_head *oplist,
 				    struct list_head *done_list);
 extern void arch_unoptimize_kprobe(struct optimized_kprobe *op);
 extern int arch_within_optimized_kprobe(struct optimized_kprobe *op,
-					unsigned long addr);
+					kprobe_opcode_t *addr);
 
 extern void opt_pre_handler(struct kprobe *p, struct pt_regs *regs);
 
 DEFINE_INSN_CACHE_OPS(optinsn);
 
-#ifdef CONFIG_SYSCTL
-extern int sysctl_kprobes_optimization;
-extern int proc_kprobes_optimization_handler(struct ctl_table *table,
-					     int write, void *buffer,
-					     size_t *length, loff_t *ppos);
-#endif
 extern void wait_for_kprobe_optimizer(void);
-#else
+#else /* !CONFIG_OPTPROBES */
 static inline void wait_for_kprobe_optimizer(void) { }
 #endif /* CONFIG_OPTPROBES */
+
 #ifdef CONFIG_KPROBES_ON_FTRACE
 extern void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
 				  struct ftrace_ops *ops, struct ftrace_regs *fregs);
 extern int arch_prepare_kprobe_ftrace(struct kprobe *p);
-#endif
-
-int arch_check_ftrace_location(struct kprobe *p);
+#else
+static inline int arch_prepare_kprobe_ftrace(struct kprobe *p)
+{
+	return -EINVAL;
+}
+#endif /* CONFIG_KPROBES_ON_FTRACE */
 
 /* Get the kprobe at this addr (if any) - called with preemption disabled */
 struct kprobe *get_kprobe(void *addr);
@@ -364,7 +398,7 @@ struct kprobe *get_kprobe(void *addr);
 /* kprobe_running() will just return the current_kprobe on this CPU */
 static inline struct kprobe *kprobe_running(void)
 {
-	return (__this_cpu_read(current_kprobe));
+	return __this_cpu_read(current_kprobe);
 }
 
 static inline void reset_current_kprobe(void)
@@ -378,18 +412,23 @@ static inline struct kprobe_ctlblk *get_kprobe_ctlblk(void)
 }
 
 kprobe_opcode_t *kprobe_lookup_name(const char *name, unsigned int offset);
+kprobe_opcode_t *arch_adjust_kprobe_addr(unsigned long addr, unsigned long offset, bool *on_func_entry);
+
 int register_kprobe(struct kprobe *p);
 void unregister_kprobe(struct kprobe *p);
 int register_kprobes(struct kprobe **kps, int num);
 void unregister_kprobes(struct kprobe **kps, int num);
-unsigned long arch_deref_entry_point(void *);
 
 int register_kretprobe(struct kretprobe *rp);
 void unregister_kretprobe(struct kretprobe *rp);
 int register_kretprobes(struct kretprobe **rps, int num);
 void unregister_kretprobes(struct kretprobe **rps, int num);
 
+#ifdef CONFIG_KRETPROBE_ON_RETHOOK
+#define kprobe_flush_task(tk)	do {} while (0)
+#else
 void kprobe_flush_task(struct task_struct *tk);
+#endif
 
 void kprobe_free_init_mem(void);
 
@@ -410,10 +449,6 @@ int arch_kprobe_get_kallsym(unsigned int *symnum, unsigned long *value,
 			    char *type, char *sym);
 #else /* !CONFIG_KPROBES: */
 
-static inline int kprobes_built_in(void)
-{
-	return 0;
-}
 static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
 {
 	return 0;
@@ -426,13 +461,16 @@ static inline struct kprobe *kprobe_running(void)
 {
 	return NULL;
 }
+#define kprobe_busy_begin()	do {} while (0)
+#define kprobe_busy_end()	do {} while (0)
+
 static inline int register_kprobe(struct kprobe *p)
 {
-	return -ENOSYS;
+	return -EOPNOTSUPP;
 }
 static inline int register_kprobes(struct kprobe **kps, int num)
 {
-	return -ENOSYS;
+	return -EOPNOTSUPP;
 }
 static inline void unregister_kprobe(struct kprobe *p)
 {
@@ -442,11 +480,11 @@ static inline void unregister_kprobes(struct kprobe **kps, int num)
 }
 static inline int register_kretprobe(struct kretprobe *rp)
 {
-	return -ENOSYS;
+	return -EOPNOTSUPP;
 }
 static inline int register_kretprobes(struct kretprobe **rps, int num)
 {
-	return -ENOSYS;
+	return -EOPNOTSUPP;
 }
 static inline void unregister_kretprobe(struct kretprobe *rp)
 {
@@ -462,11 +500,11 @@ static inline void kprobe_free_init_mem(void)
 }
 static inline int disable_kprobe(struct kprobe *kp)
 {
-	return -ENOSYS;
+	return -EOPNOTSUPP;
 }
 static inline int enable_kprobe(struct kprobe *kp)
 {
-	return -ENOSYS;
+	return -EOPNOTSUPP;
 }
 
 static inline bool within_kprobe_blacklist(unsigned long addr)
@@ -479,6 +517,7 @@ static inline int kprobe_get_kallsym(unsigned int symnum, unsigned long *value,
 	return -ERANGE;
 }
 #endif /* CONFIG_KPROBES */
+
 static inline int disable_kretprobe(struct kretprobe *rp)
 {
 	return disable_kprobe(&rp->kp);
@@ -493,19 +532,56 @@ static inline bool is_kprobe_insn_slot(unsigned long addr)
 {
 	return false;
 }
-#endif
+#endif /* !CONFIG_KPROBES */
+
 #ifndef CONFIG_OPTPROBES
 static inline bool is_kprobe_optinsn_slot(unsigned long addr)
 {
 	return false;
 }
+#endif /* !CONFIG_OPTPROBES */
+
+#ifdef CONFIG_KRETPROBES
+#ifdef CONFIG_KRETPROBE_ON_RETHOOK
+static nokprobe_inline bool is_kretprobe_trampoline(unsigned long addr)
+{
+	return is_rethook_trampoline(addr);
+}
+
+static nokprobe_inline
+unsigned long kretprobe_find_ret_addr(struct task_struct *tsk, void *fp,
+				      struct llist_node **cur)
+{
+	return rethook_find_ret_addr(tsk, (unsigned long)fp, cur);
+}
+#else
+static nokprobe_inline bool is_kretprobe_trampoline(unsigned long addr)
+{
+	return (void *)addr == kretprobe_trampoline_addr();
+}
+
+unsigned long kretprobe_find_ret_addr(struct task_struct *tsk, void *fp,
+				      struct llist_node **cur);
+#endif
+#else
+static nokprobe_inline bool is_kretprobe_trampoline(unsigned long addr)
+{
+	return false;
+}
+
+static nokprobe_inline
+unsigned long kretprobe_find_ret_addr(struct task_struct *tsk, void *fp,
+				      struct llist_node **cur)
+{
+	return 0;
+}
 #endif
 
 /* Returns true if kprobes handled the fault */
 static nokprobe_inline bool kprobe_page_fault(struct pt_regs *regs,
 					      unsigned int trap)
 {
-	if (!kprobes_built_in())
+	if (!IS_ENABLED(CONFIG_KPROBES))
 		return false;
 	if (user_mode(regs))
 		return false;
diff --git a/include/linux/kref_api.h b/include/linux/kref_api.h
new file mode 100644
index 000000000000..d67e554721d2
--- /dev/null
+++ b/include/linux/kref_api.h
@@ -0,0 +1 @@
+#include <linux/kref.h>
diff --git a/include/linux/ksm.h b/include/linux/ksm.h
index 161e8164abcf..0630e545f4cb 100644
--- a/include/linux/ksm.h
+++ b/include/linux/ksm.h
@@ -51,8 +51,8 @@ static inline void ksm_exit(struct mm_struct *mm)
 struct page *ksm_might_need_to_copy(struct page *page,
 			struct vm_area_struct *vma, unsigned long address);
 
-void rmap_walk_ksm(struct page *page, struct rmap_walk_control *rwc);
-void ksm_migrate_page(struct page *newpage, struct page *oldpage);
+void rmap_walk_ksm(struct folio *folio, const struct rmap_walk_control *rwc);
+void folio_migrate_ksm(struct folio *newfolio, struct folio *folio);
 
 #else  /* !CONFIG_KSM */
 
@@ -78,12 +78,12 @@ static inline struct page *ksm_might_need_to_copy(struct page *page,
 	return page;
 }
 
-static inline void rmap_walk_ksm(struct page *page,
-			struct rmap_walk_control *rwc)
+static inline void rmap_walk_ksm(struct folio *folio,
+			const struct rmap_walk_control *rwc)
 {
 }
 
-static inline void ksm_migrate_page(struct page *newpage, struct page *oldpage)
+static inline void folio_migrate_ksm(struct folio *newfolio, struct folio *old)
 {
 }
 #endif /* CONFIG_MMU */
diff --git a/include/linux/kthread.h b/include/linux/kthread.h
index 346b0f269161..de5d75bafd66 100644
--- a/include/linux/kthread.h
+++ b/include/linux/kthread.h
@@ -33,7 +33,8 @@ struct task_struct *kthread_create_on_cpu(int (*threadfn)(void *data),
 					  unsigned int cpu,
 					  const char *namefmt);
 
-void set_kthread_struct(struct task_struct *p);
+void get_kthread_comm(char *buf, size_t buf_size, struct task_struct *tsk);
+bool set_kthread_struct(struct task_struct *p);
 
 void kthread_set_per_cpu(struct task_struct *k, int cpu);
 bool kthread_is_per_cpu(struct task_struct *k);
@@ -56,6 +57,31 @@ bool kthread_is_per_cpu(struct task_struct *k);
 	__k;								   \
 })
 
+/**
+ * kthread_run_on_cpu - create and wake a cpu bound thread.
+ * @threadfn: the function to run until signal_pending(current).
+ * @data: data ptr for @threadfn.
+ * @cpu: The cpu on which the thread should be bound,
+ * @namefmt: printf-style name for the thread. Format is restricted
+ *	     to "name.*%u". Code fills in cpu number.
+ *
+ * Description: Convenient wrapper for kthread_create_on_cpu()
+ * followed by wake_up_process().  Returns the kthread or
+ * ERR_PTR(-ENOMEM).
+ */
+static inline struct task_struct *
+kthread_run_on_cpu(int (*threadfn)(void *data), void *data,
+			unsigned int cpu, const char *namefmt)
+{
+	struct task_struct *p;
+
+	p = kthread_create_on_cpu(threadfn, data, cpu, namefmt);
+	if (!IS_ERR(p))
+		wake_up_process(p);
+
+	return p;
+}
+
 void free_kthread_struct(struct task_struct *k);
 void kthread_bind(struct task_struct *k, unsigned int cpu);
 void kthread_bind_mask(struct task_struct *k, const struct cpumask *mask);
@@ -70,6 +96,8 @@ void *kthread_probe_data(struct task_struct *k);
 int kthread_park(struct task_struct *k);
 void kthread_unpark(struct task_struct *k);
 void kthread_parkme(void);
+void kthread_exit(long result) __noreturn;
+void kthread_complete_and_exit(struct completion *, long) __noreturn;
 
 int kthreadd(void *unused);
 extern struct task_struct *kthreadd_task;
@@ -113,12 +141,6 @@ struct kthread_delayed_work {
 	struct timer_list timer;
 };
 
-#define KTHREAD_WORKER_INIT(worker)	{				\
-	.lock = __RAW_SPIN_LOCK_UNLOCKED((worker).lock),		\
-	.work_list = LIST_HEAD_INIT((worker).work_list),		\
-	.delayed_work_list = LIST_HEAD_INIT((worker).delayed_work_list),\
-	}
-
 #define KTHREAD_WORK_INIT(work, fn)	{				\
 	.node = LIST_HEAD_INIT((work).node),				\
 	.func = (fn),							\
@@ -130,9 +152,6 @@ struct kthread_delayed_work {
 				     TIMER_IRQSAFE),			\
 	}
 
-#define DEFINE_KTHREAD_WORKER(worker)					\
-	struct kthread_worker worker = KTHREAD_WORKER_INIT(worker)
-
 #define DEFINE_KTHREAD_WORK(work, fn)					\
 	struct kthread_work work = KTHREAD_WORK_INIT(work, fn)
 
@@ -140,19 +159,6 @@ struct kthread_delayed_work {
 	struct kthread_delayed_work dwork =				\
 		KTHREAD_DELAYED_WORK_INIT(dwork, fn)
 
-/*
- * kthread_worker.lock needs its own lockdep class key when defined on
- * stack with lockdep enabled.  Use the following macros in such cases.
- */
-#ifdef CONFIG_LOCKDEP
-# define KTHREAD_WORKER_INIT_ONSTACK(worker)				\
-	({ kthread_init_worker(&worker); worker; })
-# define DEFINE_KTHREAD_WORKER_ONSTACK(worker)				\
-	struct kthread_worker worker = KTHREAD_WORKER_INIT_ONSTACK(worker)
-#else
-# define DEFINE_KTHREAD_WORKER_ONSTACK(worker) DEFINE_KTHREAD_WORKER(worker)
-#endif
-
 extern void __kthread_init_worker(struct kthread_worker *worker,
 			const char *name, struct lock_class_key *key);
 
diff --git a/include/linux/ktime_api.h b/include/linux/ktime_api.h
new file mode 100644
index 000000000000..f697d493960f
--- /dev/null
+++ b/include/linux/ktime_api.h
@@ -0,0 +1 @@
+#include <linux/ktime.h>
diff --git a/include/linux/kvm_dirty_ring.h b/include/linux/kvm_dirty_ring.h
index 120e5e90fa1d..906f899813dc 100644
--- a/include/linux/kvm_dirty_ring.h
+++ b/include/linux/kvm_dirty_ring.h
@@ -27,9 +27,9 @@ struct kvm_dirty_ring {
 	int index;
 };
 
-#if (KVM_DIRTY_LOG_PAGE_OFFSET == 0)
+#ifndef CONFIG_HAVE_KVM_DIRTY_RING
 /*
- * If KVM_DIRTY_LOG_PAGE_OFFSET not defined, kvm_dirty_ring.o should
+ * If CONFIG_HAVE_HVM_DIRTY_RING not defined, kvm_dirty_ring.o should
  * not be included as well, so define these nop functions for the arch.
  */
 static inline u32 kvm_dirty_ring_get_rsvd_entries(void)
@@ -43,11 +43,6 @@ static inline int kvm_dirty_ring_alloc(struct kvm_dirty_ring *ring,
 	return 0;
 }
 
-static inline struct kvm_dirty_ring *kvm_dirty_ring_get(struct kvm *kvm)
-{
-	return NULL;
-}
-
 static inline int kvm_dirty_ring_reset(struct kvm *kvm,
 				       struct kvm_dirty_ring *ring)
 {
@@ -74,11 +69,10 @@ static inline bool kvm_dirty_ring_soft_full(struct kvm_dirty_ring *ring)
 	return true;
 }
 
-#else /* KVM_DIRTY_LOG_PAGE_OFFSET == 0 */
+#else /* CONFIG_HAVE_KVM_DIRTY_RING */
 
 u32 kvm_dirty_ring_get_rsvd_entries(void);
 int kvm_dirty_ring_alloc(struct kvm_dirty_ring *ring, int index, u32 size);
-struct kvm_dirty_ring *kvm_dirty_ring_get(struct kvm *kvm);
 
 /*
  * called with kvm->slots_lock held, returns the number of
@@ -98,6 +92,6 @@ struct page *kvm_dirty_ring_get_page(struct kvm_dirty_ring *ring, u32 offset);
 void kvm_dirty_ring_free(struct kvm_dirty_ring *ring);
 bool kvm_dirty_ring_soft_full(struct kvm_dirty_ring *ring);
 
-#endif /* KVM_DIRTY_LOG_PAGE_OFFSET == 0 */
+#endif /* CONFIG_HAVE_KVM_DIRTY_RING */
 
 #endif	/* KVM_DIRTY_RING_H */
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 0f18df7fe874..34eed5f85ed6 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -29,6 +29,12 @@
 #include <linux/refcount.h>
 #include <linux/nospec.h>
 #include <linux/notifier.h>
+#include <linux/ftrace.h>
+#include <linux/hashtable.h>
+#include <linux/instrumentation.h>
+#include <linux/interval_tree.h>
+#include <linux/rbtree.h>
+#include <linux/xarray.h>
 #include <asm/signal.h>
 
 #include <linux/kvm.h>
@@ -39,8 +45,8 @@
 #include <asm/kvm_host.h>
 #include <linux/kvm_dirty_ring.h>
 
-#ifndef KVM_MAX_VCPU_ID
-#define KVM_MAX_VCPU_ID KVM_MAX_VCPUS
+#ifndef KVM_MAX_VCPU_IDS
+#define KVM_MAX_VCPU_IDS KVM_MAX_VCPUS
 #endif
 
 /*
@@ -142,17 +148,27 @@ static inline bool is_error_page(struct page *page)
 #define KVM_REQUEST_MASK           GENMASK(7,0)
 #define KVM_REQUEST_NO_WAKEUP      BIT(8)
 #define KVM_REQUEST_WAIT           BIT(9)
+#define KVM_REQUEST_NO_ACTION      BIT(10)
 /*
  * Architecture-independent vcpu->requests bit members
  * Bits 4-7 are reserved for more arch-independent bits.
  */
 #define KVM_REQ_TLB_FLUSH         (0 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
-#define KVM_REQ_MMU_RELOAD        (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
+#define KVM_REQ_VM_DEAD           (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
 #define KVM_REQ_UNBLOCK           2
 #define KVM_REQ_UNHALT            3
-#define KVM_REQ_VM_BUGGED         (4 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
 #define KVM_REQUEST_ARCH_BASE     8
 
+/*
+ * KVM_REQ_OUTSIDE_GUEST_MODE exists is purely as way to force the vCPU to
+ * OUTSIDE_GUEST_MODE.  KVM_REQ_OUTSIDE_GUEST_MODE differs from a vCPU "kick"
+ * in that it ensures the vCPU has reached OUTSIDE_GUEST_MODE before continuing
+ * on.  A kick only guarantees that the vCPU is on its way out, e.g. a previous
+ * kick may have set vcpu->mode to EXITING_GUEST_MODE, and so there's no
+ * guarantee the vCPU received an IPI and has actually exited guest mode.
+ */
+#define KVM_REQ_OUTSIDE_GUEST_MODE	(KVM_REQUEST_NO_ACTION | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
+
 #define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \
 	BUILD_BUG_ON((unsigned)(nr) >= (sizeof_field(struct kvm_vcpu, requests) * 8) - KVM_REQUEST_ARCH_BASE); \
 	(unsigned)(((nr) + KVM_REQUEST_ARCH_BASE) | (flags)); \
@@ -160,8 +176,7 @@ static inline bool is_error_page(struct page *page)
 #define KVM_ARCH_REQ(nr)           KVM_ARCH_REQ_FLAGS(nr, 0)
 
 bool kvm_make_vcpus_request_mask(struct kvm *kvm, unsigned int req,
-				 struct kvm_vcpu *except,
-				 unsigned long *vcpu_bitmap, cpumask_var_t tmp);
+				 unsigned long *vcpu_bitmap);
 bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
 bool kvm_make_all_cpus_request_except(struct kvm *kvm, unsigned int req,
 				      struct kvm_vcpu *except);
@@ -300,18 +315,20 @@ struct kvm_vcpu {
 	int cpu;
 	int vcpu_id; /* id given by userspace at creation */
 	int vcpu_idx; /* index in kvm->vcpus array */
-	int srcu_idx;
+	int ____srcu_idx; /* Don't use this directly.  You've been warned. */
+#ifdef CONFIG_PROVE_RCU
+	int srcu_depth;
+#endif
 	int mode;
 	u64 requests;
 	unsigned long guest_debug;
 
-	int pre_pcpu;
-	struct list_head blocked_vcpu_list;
-
 	struct mutex mutex;
 	struct kvm_run *run;
 
+#ifndef __KVM_HAVE_ARCH_WQP
 	struct rcuwait wait;
+#endif
 	struct pid __rcu *pid;
 	int sigset_active;
 	sigset_t sigset;
@@ -356,15 +373,20 @@ struct kvm_vcpu {
 	struct kvm_dirty_ring dirty_ring;
 
 	/*
-	 * The index of the most recently used memslot by this vCPU. It's ok
-	 * if this becomes stale due to memslot changes since we always check
-	 * it is a valid slot.
+	 * The most recently used memslot by this vCPU and the slots generation
+	 * for which it is valid.
+	 * No wraparound protection is needed since generations won't overflow in
+	 * thousands of years, even assuming 1M memslot operations per second.
 	 */
-	int last_used_slot;
+	struct kvm_memory_slot *last_used_slot;
+	u64 last_used_slot_gen;
 };
 
-/* must be called with irqs disabled */
-static __always_inline void guest_enter_irqoff(void)
+/*
+ * Start accounting time towards a guest.
+ * Must be called before entering guest context.
+ */
+static __always_inline void guest_timing_enter_irqoff(void)
 {
 	/*
 	 * This is running in ioctl context so its safe to assume that it's the
@@ -373,7 +395,18 @@ static __always_inline void guest_enter_irqoff(void)
 	instrumentation_begin();
 	vtime_account_guest_enter();
 	instrumentation_end();
+}
 
+/*
+ * Enter guest context and enter an RCU extended quiescent state.
+ *
+ * Between guest_context_enter_irqoff() and guest_context_exit_irqoff() it is
+ * unsafe to use any code which may directly or indirectly use RCU, tracing
+ * (including IRQ flag tracing), or lockdep. All code in this period must be
+ * non-instrumentable.
+ */
+static __always_inline void guest_context_enter_irqoff(void)
+{
 	/*
 	 * KVM does not hold any references to rcu protected data when it
 	 * switches CPU into a guest mode. In fact switching to a guest mode
@@ -389,16 +422,79 @@ static __always_inline void guest_enter_irqoff(void)
 	}
 }
 
-static __always_inline void guest_exit_irqoff(void)
+/*
+ * Deprecated. Architectures should move to guest_timing_enter_irqoff() and
+ * guest_state_enter_irqoff().
+ */
+static __always_inline void guest_enter_irqoff(void)
+{
+	guest_timing_enter_irqoff();
+	guest_context_enter_irqoff();
+}
+
+/**
+ * guest_state_enter_irqoff - Fixup state when entering a guest
+ *
+ * Entry to a guest will enable interrupts, but the kernel state is interrupts
+ * disabled when this is invoked. Also tell RCU about it.
+ *
+ * 1) Trace interrupts on state
+ * 2) Invoke context tracking if enabled to adjust RCU state
+ * 3) Tell lockdep that interrupts are enabled
+ *
+ * Invoked from architecture specific code before entering a guest.
+ * Must be called with interrupts disabled and the caller must be
+ * non-instrumentable.
+ * The caller has to invoke guest_timing_enter_irqoff() before this.
+ *
+ * Note: this is analogous to exit_to_user_mode().
+ */
+static __always_inline void guest_state_enter_irqoff(void)
+{
+	instrumentation_begin();
+	trace_hardirqs_on_prepare();
+	lockdep_hardirqs_on_prepare(CALLER_ADDR0);
+	instrumentation_end();
+
+	guest_context_enter_irqoff();
+	lockdep_hardirqs_on(CALLER_ADDR0);
+}
+
+/*
+ * Exit guest context and exit an RCU extended quiescent state.
+ *
+ * Between guest_context_enter_irqoff() and guest_context_exit_irqoff() it is
+ * unsafe to use any code which may directly or indirectly use RCU, tracing
+ * (including IRQ flag tracing), or lockdep. All code in this period must be
+ * non-instrumentable.
+ */
+static __always_inline void guest_context_exit_irqoff(void)
 {
 	context_tracking_guest_exit();
+}
 
+/*
+ * Stop accounting time towards a guest.
+ * Must be called after exiting guest context.
+ */
+static __always_inline void guest_timing_exit_irqoff(void)
+{
 	instrumentation_begin();
 	/* Flush the guest cputime we spent on the guest */
 	vtime_account_guest_exit();
 	instrumentation_end();
 }
 
+/*
+ * Deprecated. Architectures should move to guest_state_exit_irqoff() and
+ * guest_timing_exit_irqoff().
+ */
+static __always_inline void guest_exit_irqoff(void)
+{
+	guest_context_exit_irqoff();
+	guest_timing_exit_irqoff();
+}
+
 static inline void guest_exit(void)
 {
 	unsigned long flags;
@@ -408,6 +504,33 @@ static inline void guest_exit(void)
 	local_irq_restore(flags);
 }
 
+/**
+ * guest_state_exit_irqoff - Establish state when returning from guest mode
+ *
+ * Entry from a guest disables interrupts, but guest mode is traced as
+ * interrupts enabled. Also with NO_HZ_FULL RCU might be idle.
+ *
+ * 1) Tell lockdep that interrupts are disabled
+ * 2) Invoke context tracking if enabled to reactivate RCU
+ * 3) Trace interrupts off state
+ *
+ * Invoked from architecture specific code after exiting a guest.
+ * Must be invoked with interrupts disabled and the caller must be
+ * non-instrumentable.
+ * The caller has to invoke guest_timing_exit_irqoff() after this.
+ *
+ * Note: this is analogous to enter_from_user_mode().
+ */
+static __always_inline void guest_state_exit_irqoff(void)
+{
+	lockdep_hardirqs_off(CALLER_ADDR0);
+	guest_context_exit_irqoff();
+
+	instrumentation_begin();
+	trace_hardirqs_off_finish();
+	instrumentation_end();
+}
+
 static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
 {
 	/*
@@ -425,7 +548,26 @@ static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
  */
 #define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
 
+/*
+ * Since at idle each memslot belongs to two memslot sets it has to contain
+ * two embedded nodes for each data structure that it forms a part of.
+ *
+ * Two memslot sets (one active and one inactive) are necessary so the VM
+ * continues to run on one memslot set while the other is being modified.
+ *
+ * These two memslot sets normally point to the same set of memslots.
+ * They can, however, be desynchronized when performing a memslot management
+ * operation by replacing the memslot to be modified by its copy.
+ * After the operation is complete, both memslot sets once again point to
+ * the same, common set of memslot data.
+ *
+ * The memslots themselves are independent of each other so they can be
+ * individually added or deleted.
+ */
 struct kvm_memory_slot {
+	struct hlist_node id_node[2];
+	struct interval_tree_node hva_node[2];
+	struct rb_node gfn_node[2];
 	gfn_t base_gfn;
 	unsigned long npages;
 	unsigned long *dirty_bitmap;
@@ -436,7 +578,7 @@ struct kvm_memory_slot {
 	u16 as_id;
 };
 
-static inline bool kvm_slot_dirty_track_enabled(struct kvm_memory_slot *slot)
+static inline bool kvm_slot_dirty_track_enabled(const struct kvm_memory_slot *slot)
 {
 	return slot->flags & KVM_MEM_LOG_DIRTY_PAGES;
 }
@@ -470,6 +612,12 @@ struct kvm_hv_sint {
 	u32 sint;
 };
 
+struct kvm_xen_evtchn {
+	u32 port;
+	u32 vcpu;
+	u32 priority;
+};
+
 struct kvm_kernel_irq_routing_entry {
 	u32 gsi;
 	u32 type;
@@ -490,6 +638,7 @@ struct kvm_kernel_irq_routing_entry {
 		} msi;
 		struct kvm_s390_adapter_int adapter;
 		struct kvm_hv_sint hv_sint;
+		struct kvm_xen_evtchn xen_evtchn;
 	};
 	struct hlist_node link;
 };
@@ -520,18 +669,21 @@ static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu)
 }
 #endif
 
-/*
- * Note:
- * memslots are not sorted by id anymore, please use id_to_memslot()
- * to get the memslot by its id.
- */
 struct kvm_memslots {
 	u64 generation;
-	/* The mapping table from slot id to the index in memslots[]. */
-	short id_to_index[KVM_MEM_SLOTS_NUM];
-	atomic_t last_used_slot;
-	int used_slots;
-	struct kvm_memory_slot memslots[];
+	atomic_long_t last_used_slot;
+	struct rb_root_cached hva_tree;
+	struct rb_root gfn_tree;
+	/*
+	 * The mapping table from slot id to memslot.
+	 *
+	 * 7-bit bucket count matches the size of the old id to index array for
+	 * 512 slots, while giving good performance with this slot count.
+	 * Higher bucket counts bring only small performance improvements but
+	 * always result in higher memory usage (even for lower memslot counts).
+	 */
+	DECLARE_HASHTABLE(id_hash, 7);
+	int node_idx;
 };
 
 struct kvm {
@@ -552,14 +704,22 @@ struct kvm {
 	 */
 	struct mutex slots_arch_lock;
 	struct mm_struct *mm; /* userspace tied to this vm */
+	unsigned long nr_memslot_pages;
+	/* The two memslot sets - active and inactive (per address space) */
+	struct kvm_memslots __memslots[KVM_ADDRESS_SPACE_NUM][2];
+	/* The current active memslot set for each address space */
 	struct kvm_memslots __rcu *memslots[KVM_ADDRESS_SPACE_NUM];
-	struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
+	struct xarray vcpu_array;
 
 	/* Used to wait for completion of MMU notifiers.  */
 	spinlock_t mn_invalidate_lock;
 	unsigned long mn_active_invalidate_count;
 	struct rcuwait mn_memslots_update_rcuwait;
 
+	/* For management / invalidation of gfn_to_pfn_caches */
+	spinlock_t gpc_lock;
+	struct list_head gpc_list;
+
 	/*
 	 * created_vcpus is protected by kvm->lock, and is incremented
 	 * at the beginning of KVM_CREATE_VCPU.  online_vcpus is only
@@ -618,6 +778,7 @@ struct kvm {
 	unsigned int max_halt_poll_ns;
 	u32 dirty_ring_size;
 	bool vm_bugged;
+	bool vm_dead;
 
 #ifdef CONFIG_HAVE_KVM_PM_NOTIFIER
 	struct notifier_block pm_notifier;
@@ -651,12 +812,19 @@ struct kvm {
 #define vcpu_err(vcpu, fmt, ...)					\
 	kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
 
+static inline void kvm_vm_dead(struct kvm *kvm)
+{
+	kvm->vm_dead = true;
+	kvm_make_all_cpus_request(kvm, KVM_REQ_VM_DEAD);
+}
+
 static inline void kvm_vm_bugged(struct kvm *kvm)
 {
 	kvm->vm_bugged = true;
-	kvm_make_all_cpus_request(kvm, KVM_REQ_VM_BUGGED);
+	kvm_vm_dead(kvm);
 }
 
+
 #define KVM_BUG(cond, kvm, fmt...)				\
 ({								\
 	int __ret = (cond);					\
@@ -675,6 +843,25 @@ static inline void kvm_vm_bugged(struct kvm *kvm)
 	unlikely(__ret);					\
 })
 
+static inline void kvm_vcpu_srcu_read_lock(struct kvm_vcpu *vcpu)
+{
+#ifdef CONFIG_PROVE_RCU
+	WARN_ONCE(vcpu->srcu_depth++,
+		  "KVM: Illegal vCPU srcu_idx LOCK, depth=%d", vcpu->srcu_depth - 1);
+#endif
+	vcpu->____srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
+}
+
+static inline void kvm_vcpu_srcu_read_unlock(struct kvm_vcpu *vcpu)
+{
+	srcu_read_unlock(&vcpu->kvm->srcu, vcpu->____srcu_idx);
+
+#ifdef CONFIG_PROVE_RCU
+	WARN_ONCE(--vcpu->srcu_depth,
+		  "KVM: Illegal vCPU srcu_idx UNLOCK, depth=%d", vcpu->srcu_depth);
+#endif
+}
+
 static inline bool kvm_dirty_log_manual_protect_and_init_set(struct kvm *kvm)
 {
 	return !!(kvm->manual_dirty_log_protect & KVM_DIRTY_LOG_INITIALLY_SET);
@@ -694,19 +881,17 @@ static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
 
 	/* Pairs with smp_wmb() in kvm_vm_ioctl_create_vcpu.  */
 	smp_rmb();
-	return kvm->vcpus[i];
+	return xa_load(&kvm->vcpu_array, i);
 }
 
-#define kvm_for_each_vcpu(idx, vcpup, kvm) \
-	for (idx = 0; \
-	     idx < atomic_read(&kvm->online_vcpus) && \
-	     (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
-	     idx++)
+#define kvm_for_each_vcpu(idx, vcpup, kvm)		   \
+	xa_for_each_range(&kvm->vcpu_array, idx, vcpup, 0, \
+			  (atomic_read(&kvm->online_vcpus) - 1))
 
 static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
 {
 	struct kvm_vcpu *vcpu = NULL;
-	int i;
+	unsigned long i;
 
 	if (id < 0)
 		return NULL;
@@ -720,13 +905,12 @@ static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
 	return NULL;
 }
 
-#define kvm_for_each_memslot(memslot, slots)				\
-	for (memslot = &slots->memslots[0];				\
-	     memslot < slots->memslots + slots->used_slots; memslot++)	\
-		if (WARN_ON_ONCE(!memslot->npages)) {			\
-		} else
+static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu)
+{
+	return vcpu->vcpu_idx;
+}
 
-void kvm_vcpu_destroy(struct kvm_vcpu *vcpu);
+void kvm_destroy_vcpus(struct kvm *kvm);
 
 void vcpu_load(struct kvm_vcpu *vcpu);
 void vcpu_put(struct kvm_vcpu *vcpu);
@@ -786,21 +970,124 @@ static inline struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu)
 	return __kvm_memslots(vcpu->kvm, as_id);
 }
 
+static inline bool kvm_memslots_empty(struct kvm_memslots *slots)
+{
+	return RB_EMPTY_ROOT(&slots->gfn_tree);
+}
+
+#define kvm_for_each_memslot(memslot, bkt, slots)			      \
+	hash_for_each(slots->id_hash, bkt, memslot, id_node[slots->node_idx]) \
+		if (WARN_ON_ONCE(!memslot->npages)) {			      \
+		} else
+
 static inline
 struct kvm_memory_slot *id_to_memslot(struct kvm_memslots *slots, int id)
 {
-	int index = slots->id_to_index[id];
 	struct kvm_memory_slot *slot;
+	int idx = slots->node_idx;
 
-	if (index < 0)
-		return NULL;
+	hash_for_each_possible(slots->id_hash, slot, id_node[idx], id) {
+		if (slot->id == id)
+			return slot;
+	}
 
-	slot = &slots->memslots[index];
+	return NULL;
+}
 
-	WARN_ON(slot->id != id);
-	return slot;
+/* Iterator used for walking memslots that overlap a gfn range. */
+struct kvm_memslot_iter {
+	struct kvm_memslots *slots;
+	struct rb_node *node;
+	struct kvm_memory_slot *slot;
+};
+
+static inline void kvm_memslot_iter_next(struct kvm_memslot_iter *iter)
+{
+	iter->node = rb_next(iter->node);
+	if (!iter->node)
+		return;
+
+	iter->slot = container_of(iter->node, struct kvm_memory_slot, gfn_node[iter->slots->node_idx]);
 }
 
+static inline void kvm_memslot_iter_start(struct kvm_memslot_iter *iter,
+					  struct kvm_memslots *slots,
+					  gfn_t start)
+{
+	int idx = slots->node_idx;
+	struct rb_node *tmp;
+	struct kvm_memory_slot *slot;
+
+	iter->slots = slots;
+
+	/*
+	 * Find the so called "upper bound" of a key - the first node that has
+	 * its key strictly greater than the searched one (the start gfn in our case).
+	 */
+	iter->node = NULL;
+	for (tmp = slots->gfn_tree.rb_node; tmp; ) {
+		slot = container_of(tmp, struct kvm_memory_slot, gfn_node[idx]);
+		if (start < slot->base_gfn) {
+			iter->node = tmp;
+			tmp = tmp->rb_left;
+		} else {
+			tmp = tmp->rb_right;
+		}
+	}
+
+	/*
+	 * Find the slot with the lowest gfn that can possibly intersect with
+	 * the range, so we'll ideally have slot start <= range start
+	 */
+	if (iter->node) {
+		/*
+		 * A NULL previous node means that the very first slot
+		 * already has a higher start gfn.
+		 * In this case slot start > range start.
+		 */
+		tmp = rb_prev(iter->node);
+		if (tmp)
+			iter->node = tmp;
+	} else {
+		/* a NULL node below means no slots */
+		iter->node = rb_last(&slots->gfn_tree);
+	}
+
+	if (iter->node) {
+		iter->slot = container_of(iter->node, struct kvm_memory_slot, gfn_node[idx]);
+
+		/*
+		 * It is possible in the slot start < range start case that the
+		 * found slot ends before or at range start (slot end <= range start)
+		 * and so it does not overlap the requested range.
+		 *
+		 * In such non-overlapping case the next slot (if it exists) will
+		 * already have slot start > range start, otherwise the logic above
+		 * would have found it instead of the current slot.
+		 */
+		if (iter->slot->base_gfn + iter->slot->npages <= start)
+			kvm_memslot_iter_next(iter);
+	}
+}
+
+static inline bool kvm_memslot_iter_is_valid(struct kvm_memslot_iter *iter, gfn_t end)
+{
+	if (!iter->node)
+		return false;
+
+	/*
+	 * If this slot starts beyond or at the end of the range so does
+	 * every next one
+	 */
+	return iter->slot->base_gfn < end;
+}
+
+/* Iterate over each memslot at least partially intersecting [start, end) range */
+#define kvm_for_each_memslot_in_gfn_range(iter, slots, start, end)	\
+	for (kvm_memslot_iter_start(iter, slots, start);		\
+	     kvm_memslot_iter_is_valid(iter, end);			\
+	     kvm_memslot_iter_next(iter))
+
 /*
  * KVM_SET_USER_MEMORY_REGION ioctl allows the following operations:
  * - create a new memory slot
@@ -826,11 +1113,10 @@ int __kvm_set_memory_region(struct kvm *kvm,
 void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot);
 void kvm_arch_memslots_updated(struct kvm *kvm, u64 gen);
 int kvm_arch_prepare_memory_region(struct kvm *kvm,
-				struct kvm_memory_slot *memslot,
-				const struct kvm_userspace_memory_region *mem,
+				const struct kvm_memory_slot *old,
+				struct kvm_memory_slot *new,
 				enum kvm_mr_change change);
 void kvm_arch_commit_memory_region(struct kvm *kvm,
-				const struct kvm_userspace_memory_region *mem,
 				struct kvm_memory_slot *old,
 				const struct kvm_memory_slot *new,
 				enum kvm_mr_change change);
@@ -856,9 +1142,9 @@ void kvm_set_page_accessed(struct page *page);
 kvm_pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
 kvm_pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
 		      bool *writable);
-kvm_pfn_t gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
-kvm_pfn_t gfn_to_pfn_memslot_atomic(struct kvm_memory_slot *slot, gfn_t gfn);
-kvm_pfn_t __gfn_to_pfn_memslot(struct kvm_memory_slot *slot, gfn_t gfn,
+kvm_pfn_t gfn_to_pfn_memslot(const struct kvm_memory_slot *slot, gfn_t gfn);
+kvm_pfn_t gfn_to_pfn_memslot_atomic(const struct kvm_memory_slot *slot, gfn_t gfn);
+kvm_pfn_t __gfn_to_pfn_memslot(const struct kvm_memory_slot *slot, gfn_t gfn,
 			       bool atomic, bool *async, bool write_fault,
 			       bool *writable, hva_t *hva);
 
@@ -867,7 +1153,7 @@ void kvm_release_pfn_dirty(kvm_pfn_t pfn);
 void kvm_set_pfn_dirty(kvm_pfn_t pfn);
 void kvm_set_pfn_accessed(kvm_pfn_t pfn);
 
-void kvm_release_pfn(kvm_pfn_t pfn, bool dirty, struct gfn_to_pfn_cache *cache);
+void kvm_release_pfn(kvm_pfn_t pfn, bool dirty);
 int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
 			int len);
 int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
@@ -935,7 +1221,7 @@ struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
 bool kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
 bool kvm_vcpu_is_visible_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
 unsigned long kvm_host_page_size(struct kvm_vcpu *vcpu, gfn_t gfn);
-void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot, gfn_t gfn);
+void mark_page_dirty_in_slot(struct kvm *kvm, const struct kvm_memory_slot *memslot, gfn_t gfn);
 void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
 
 struct kvm_memslots *kvm_vcpu_memslots(struct kvm_vcpu *vcpu);
@@ -943,12 +1229,8 @@ struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn
 kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn);
 kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn);
 int kvm_vcpu_map(struct kvm_vcpu *vcpu, gpa_t gpa, struct kvm_host_map *map);
-int kvm_map_gfn(struct kvm_vcpu *vcpu, gfn_t gfn, struct kvm_host_map *map,
-		struct gfn_to_pfn_cache *cache, bool atomic);
 struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn);
 void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map, bool dirty);
-int kvm_unmap_gfn(struct kvm_vcpu *vcpu, struct kvm_host_map *map,
-		  struct gfn_to_pfn_cache *cache, bool dirty, bool atomic);
 unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn);
 unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable);
 int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset,
@@ -963,10 +1245,106 @@ int kvm_vcpu_write_guest(struct kvm_vcpu *vcpu, gpa_t gpa, const void *data,
 			 unsigned long len);
 void kvm_vcpu_mark_page_dirty(struct kvm_vcpu *vcpu, gfn_t gfn);
 
+/**
+ * kvm_gfn_to_pfn_cache_init - prepare a cached kernel mapping and HPA for a
+ *                             given guest physical address.
+ *
+ * @kvm:	   pointer to kvm instance.
+ * @gpc:	   struct gfn_to_pfn_cache object.
+ * @vcpu:	   vCPU to be used for marking pages dirty and to be woken on
+ *		   invalidation.
+ * @usage:	   indicates if the resulting host physical PFN is used while
+ *		   the @vcpu is IN_GUEST_MODE (in which case invalidation of 
+ *		   the cache from MMU notifiers---but not for KVM memslot
+ *		   changes!---will also force @vcpu to exit the guest and
+ *		   refresh the cache); and/or if the PFN used directly
+ *		   by KVM (and thus needs a kernel virtual mapping).
+ * @gpa:	   guest physical address to map.
+ * @len:	   sanity check; the range being access must fit a single page.
+ *
+ * @return:	   0 for success.
+ *		   -EINVAL for a mapping which would cross a page boundary.
+ *                 -EFAULT for an untranslatable guest physical address.
+ *
+ * This primes a gfn_to_pfn_cache and links it into the @kvm's list for
+ * invalidations to be processed.  Callers are required to use
+ * kvm_gfn_to_pfn_cache_check() to ensure that the cache is valid before
+ * accessing the target page.
+ */
+int kvm_gfn_to_pfn_cache_init(struct kvm *kvm, struct gfn_to_pfn_cache *gpc,
+			      struct kvm_vcpu *vcpu, enum pfn_cache_usage usage,
+			      gpa_t gpa, unsigned long len);
+
+/**
+ * kvm_gfn_to_pfn_cache_check - check validity of a gfn_to_pfn_cache.
+ *
+ * @kvm:	   pointer to kvm instance.
+ * @gpc:	   struct gfn_to_pfn_cache object.
+ * @gpa:	   current guest physical address to map.
+ * @len:	   sanity check; the range being access must fit a single page.
+ *
+ * @return:	   %true if the cache is still valid and the address matches.
+ *		   %false if the cache is not valid.
+ *
+ * Callers outside IN_GUEST_MODE context should hold a read lock on @gpc->lock
+ * while calling this function, and then continue to hold the lock until the
+ * access is complete.
+ *
+ * Callers in IN_GUEST_MODE may do so without locking, although they should
+ * still hold a read lock on kvm->scru for the memslot checks.
+ */
+bool kvm_gfn_to_pfn_cache_check(struct kvm *kvm, struct gfn_to_pfn_cache *gpc,
+				gpa_t gpa, unsigned long len);
+
+/**
+ * kvm_gfn_to_pfn_cache_refresh - update a previously initialized cache.
+ *
+ * @kvm:	   pointer to kvm instance.
+ * @gpc:	   struct gfn_to_pfn_cache object.
+ * @gpa:	   updated guest physical address to map.
+ * @len:	   sanity check; the range being access must fit a single page.
+ *
+ * @return:	   0 for success.
+ *		   -EINVAL for a mapping which would cross a page boundary.
+ *                 -EFAULT for an untranslatable guest physical address.
+ *
+ * This will attempt to refresh a gfn_to_pfn_cache. Note that a successful
+ * returm from this function does not mean the page can be immediately
+ * accessed because it may have raced with an invalidation. Callers must
+ * still lock and check the cache status, as this function does not return
+ * with the lock still held to permit access.
+ */
+int kvm_gfn_to_pfn_cache_refresh(struct kvm *kvm, struct gfn_to_pfn_cache *gpc,
+				 gpa_t gpa, unsigned long len);
+
+/**
+ * kvm_gfn_to_pfn_cache_unmap - temporarily unmap a gfn_to_pfn_cache.
+ *
+ * @kvm:	   pointer to kvm instance.
+ * @gpc:	   struct gfn_to_pfn_cache object.
+ *
+ * This unmaps the referenced page. The cache is left in the invalid state
+ * but at least the mapping from GPA to userspace HVA will remain cached
+ * and can be reused on a subsequent refresh.
+ */
+void kvm_gfn_to_pfn_cache_unmap(struct kvm *kvm, struct gfn_to_pfn_cache *gpc);
+
+/**
+ * kvm_gfn_to_pfn_cache_destroy - destroy and unlink a gfn_to_pfn_cache.
+ *
+ * @kvm:	   pointer to kvm instance.
+ * @gpc:	   struct gfn_to_pfn_cache object.
+ *
+ * This removes a cache from the @kvm's list to be processed on MMU notifier
+ * invocation.
+ */
+void kvm_gfn_to_pfn_cache_destroy(struct kvm *kvm, struct gfn_to_pfn_cache *gpc);
+
 void kvm_sigset_activate(struct kvm_vcpu *vcpu);
 void kvm_sigset_deactivate(struct kvm_vcpu *vcpu);
 
-void kvm_vcpu_block(struct kvm_vcpu *vcpu);
+void kvm_vcpu_halt(struct kvm_vcpu *vcpu);
+bool kvm_vcpu_block(struct kvm_vcpu *vcpu);
 void kvm_arch_vcpu_blocking(struct kvm_vcpu *vcpu);
 void kvm_arch_vcpu_unblocking(struct kvm_vcpu *vcpu);
 bool kvm_vcpu_wake_up(struct kvm_vcpu *vcpu);
@@ -975,7 +1353,6 @@ int kvm_vcpu_yield_to(struct kvm_vcpu *target);
 void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu, bool usermode_vcpu_not_eligible);
 
 void kvm_flush_remote_tlbs(struct kvm *kvm);
-void kvm_reload_remote_mmus(struct kvm *kvm);
 
 #ifdef KVM_ARCH_NR_OBJS_PER_MEMORY_CACHE
 int kvm_mmu_topup_memory_cache(struct kvm_mmu_memory_cache *mc, int min);
@@ -1082,10 +1459,17 @@ static inline struct kvm *kvm_arch_alloc_vm(void)
 {
 	return kzalloc(sizeof(struct kvm), GFP_KERNEL);
 }
+#endif
 
+static inline void __kvm_arch_free_vm(struct kvm *kvm)
+{
+	kvfree(kvm);
+}
+
+#ifndef __KVM_HAVE_ARCH_VM_FREE
 static inline void kvm_arch_free_vm(struct kvm *kvm)
 {
-	kfree(kvm);
+	__kvm_arch_free_vm(kvm);
 }
 #endif
 
@@ -1142,6 +1526,20 @@ static inline struct rcuwait *kvm_arch_vcpu_get_wait(struct kvm_vcpu *vcpu)
 #endif
 }
 
+/*
+ * Wake a vCPU if necessary, but don't do any stats/metadata updates.  Returns
+ * true if the vCPU was blocking and was awakened, false otherwise.
+ */
+static inline bool __kvm_vcpu_wake_up(struct kvm_vcpu *vcpu)
+{
+	return !!rcuwait_wake_up(kvm_arch_vcpu_get_wait(vcpu));
+}
+
+static inline bool kvm_vcpu_is_blocking(struct kvm_vcpu *vcpu)
+{
+	return rcuwait_active(kvm_arch_vcpu_get_wait(vcpu));
+}
+
 #ifdef __KVM_HAVE_ARCH_INTC_INITIALIZED
 /*
  * returns true if the virtual interrupt controller is initialized and
@@ -1156,6 +1554,16 @@ static inline bool kvm_arch_intc_initialized(struct kvm *kvm)
 }
 #endif
 
+#ifdef CONFIG_GUEST_PERF_EVENTS
+unsigned long kvm_arch_vcpu_get_ip(struct kvm_vcpu *vcpu);
+
+void kvm_register_perf_callbacks(unsigned int (*pt_intr_handler)(void));
+void kvm_unregister_perf_callbacks(void);
+#else
+static inline void kvm_register_perf_callbacks(void *ign) {}
+static inline void kvm_unregister_perf_callbacks(void) {}
+#endif /* CONFIG_GUEST_PERF_EVENTS */
+
 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
 void kvm_arch_destroy_vm(struct kvm *kvm);
 void kvm_arch_sync_events(struct kvm *kvm);
@@ -1164,7 +1572,6 @@ int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
 
 bool kvm_is_reserved_pfn(kvm_pfn_t pfn);
 bool kvm_is_zone_device_pfn(kvm_pfn_t pfn);
-bool kvm_is_transparent_hugepage(kvm_pfn_t pfn);
 
 struct kvm_irq_ack_notifier {
 	struct hlist_node link;
@@ -1195,25 +1602,15 @@ void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
 bool kvm_arch_irqfd_allowed(struct kvm *kvm, struct kvm_irqfd *args);
 
 /*
- * Returns a pointer to the memslot at slot_index if it contains gfn.
+ * Returns a pointer to the memslot if it contains gfn.
  * Otherwise returns NULL.
  */
 static inline struct kvm_memory_slot *
-try_get_memslot(struct kvm_memslots *slots, int slot_index, gfn_t gfn)
+try_get_memslot(struct kvm_memory_slot *slot, gfn_t gfn)
 {
-	struct kvm_memory_slot *slot;
-
-	if (slot_index < 0 || slot_index >= slots->used_slots)
+	if (!slot)
 		return NULL;
 
-	/*
-	 * slot_index can come from vcpu->last_used_slot which is not kept
-	 * in sync with userspace-controllable memslot deletion. So use nospec
-	 * to prevent the CPU from speculating past the end of memslots[].
-	 */
-	slot_index = array_index_nospec(slot_index, slots->used_slots);
-	slot = &slots->memslots[slot_index];
-
 	if (gfn >= slot->base_gfn && gfn < slot->base_gfn + slot->npages)
 		return slot;
 	else
@@ -1221,63 +1618,63 @@ try_get_memslot(struct kvm_memslots *slots, int slot_index, gfn_t gfn)
 }
 
 /*
- * Returns a pointer to the memslot that contains gfn and records the index of
- * the slot in index. Otherwise returns NULL.
+ * Returns a pointer to the memslot that contains gfn. Otherwise returns NULL.
  *
- * IMPORTANT: Slots are sorted from highest GFN to lowest GFN!
+ * With "approx" set returns the memslot also when the address falls
+ * in a hole. In that case one of the memslots bordering the hole is
+ * returned.
  */
 static inline struct kvm_memory_slot *
-search_memslots(struct kvm_memslots *slots, gfn_t gfn, int *index)
+search_memslots(struct kvm_memslots *slots, gfn_t gfn, bool approx)
 {
-	int start = 0, end = slots->used_slots;
-	struct kvm_memory_slot *memslots = slots->memslots;
 	struct kvm_memory_slot *slot;
-
-	if (unlikely(!slots->used_slots))
-		return NULL;
-
-	while (start < end) {
-		int slot = start + (end - start) / 2;
-
-		if (gfn >= memslots[slot].base_gfn)
-			end = slot;
-		else
-			start = slot + 1;
-	}
-
-	slot = try_get_memslot(slots, start, gfn);
-	if (slot) {
-		*index = start;
-		return slot;
+	struct rb_node *node;
+	int idx = slots->node_idx;
+
+	slot = NULL;
+	for (node = slots->gfn_tree.rb_node; node; ) {
+		slot = container_of(node, struct kvm_memory_slot, gfn_node[idx]);
+		if (gfn >= slot->base_gfn) {
+			if (gfn < slot->base_gfn + slot->npages)
+				return slot;
+			node = node->rb_right;
+		} else
+			node = node->rb_left;
 	}
 
-	return NULL;
+	return approx ? slot : NULL;
 }
 
-/*
- * __gfn_to_memslot() and its descendants are here because it is called from
- * non-modular code in arch/powerpc/kvm/book3s_64_vio{,_hv}.c. gfn_to_memslot()
- * itself isn't here as an inline because that would bloat other code too much.
- */
 static inline struct kvm_memory_slot *
-__gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn)
+____gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn, bool approx)
 {
 	struct kvm_memory_slot *slot;
-	int slot_index = atomic_read(&slots->last_used_slot);
 
-	slot = try_get_memslot(slots, slot_index, gfn);
+	slot = (struct kvm_memory_slot *)atomic_long_read(&slots->last_used_slot);
+	slot = try_get_memslot(slot, gfn);
 	if (slot)
 		return slot;
 
-	slot = search_memslots(slots, gfn, &slot_index);
+	slot = search_memslots(slots, gfn, approx);
 	if (slot) {
-		atomic_set(&slots->last_used_slot, slot_index);
+		atomic_long_set(&slots->last_used_slot, (unsigned long)slot);
 		return slot;
 	}
 
 	return NULL;
 }
 
+/*
+ * __gfn_to_memslot() and its descendants are here to allow arch code to inline
+ * the lookups in hot paths.  gfn_to_memslot() itself isn't here as an inline
+ * because that would bloat other code too much.
+ */
+static inline struct kvm_memory_slot *
+__gfn_to_memslot(struct kvm_memslots *slots, gfn_t gfn)
+{
+	return ____gfn_to_memslot(slots, gfn, false);
+}
+
 static inline unsigned long
 __gfn_to_hva_memslot(const struct kvm_memory_slot *slot, gfn_t gfn)
 {
@@ -1453,7 +1850,8 @@ struct _kvm_stats_desc {
 	STATS_DESC_LOGHIST_TIME_NSEC(VCPU_GENERIC, halt_poll_fail_hist,	       \
 			HALT_POLL_HIST_COUNT),				       \
 	STATS_DESC_LOGHIST_TIME_NSEC(VCPU_GENERIC, halt_wait_hist,	       \
-			HALT_POLL_HIST_COUNT)
+			HALT_POLL_HIST_COUNT),				       \
+	STATS_DESC_ICOUNTER(VCPU_GENERIC, blocking)
 
 extern struct dentry *kvm_debugfs_dir;
 
@@ -1615,7 +2013,7 @@ static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
 
 void kvm_arch_irq_routing_update(struct kvm *kvm);
 
-static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
+static inline void __kvm_make_request(int req, struct kvm_vcpu *vcpu)
 {
 	/*
 	 * Ensure the rest of the request is published to kvm_check_request's
@@ -1625,6 +2023,19 @@ static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
 	set_bit(req & KVM_REQUEST_MASK, (void *)&vcpu->requests);
 }
 
+static __always_inline void kvm_make_request(int req, struct kvm_vcpu *vcpu)
+{
+	/*
+	 * Request that don't require vCPU action should never be logged in
+	 * vcpu->requests.  The vCPU won't clear the request, so it will stay
+	 * logged indefinitely and prevent the vCPU from entering the guest.
+	 */
+	BUILD_BUG_ON(!__builtin_constant_p(req) ||
+		     (req & KVM_REQUEST_NO_ACTION));
+
+	__kvm_make_request(req, vcpu);
+}
+
 static inline bool kvm_request_pending(struct kvm_vcpu *vcpu)
 {
 	return READ_ONCE(vcpu->requests);
@@ -1765,6 +2176,8 @@ void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *);
 void kvm_arch_irq_bypass_start(struct irq_bypass_consumer *);
 int kvm_arch_update_irqfd_routing(struct kvm *kvm, unsigned int host_irq,
 				  uint32_t guest_irq, bool set);
+bool kvm_arch_irqfd_route_changed(struct kvm_kernel_irq_routing_entry *,
+				  struct kvm_kernel_irq_routing_entry *);
 #endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
 
 #ifdef CONFIG_HAVE_KVM_INVALID_WAKEUPS
@@ -1806,6 +2219,8 @@ static inline long kvm_arch_vcpu_async_ioctl(struct file *filp,
 void kvm_arch_mmu_notifier_invalidate_range(struct kvm *kvm,
 					    unsigned long start, unsigned long end);
 
+void kvm_arch_guest_memory_reclaimed(struct kvm *kvm);
+
 #ifdef CONFIG_HAVE_KVM_VCPU_RUN_PID_CHANGE
 int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu);
 #else
diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h
index 2237abb93ccd..ac1ebb37a0ff 100644
--- a/include/linux/kvm_types.h
+++ b/include/linux/kvm_types.h
@@ -18,7 +18,9 @@ struct kvm_memslots;
 
 enum kvm_mr_change;
 
+#include <linux/bits.h>
 #include <linux/types.h>
+#include <linux/spinlock_types.h>
 
 #include <asm/kvm_types.h>
 
@@ -45,6 +47,12 @@ typedef u64            hfn_t;
 
 typedef hfn_t kvm_pfn_t;
 
+enum pfn_cache_usage {
+	KVM_GUEST_USES_PFN = BIT(0),
+	KVM_HOST_USES_PFN  = BIT(1),
+	KVM_GUEST_AND_HOST_USE_PFN = KVM_GUEST_USES_PFN | KVM_HOST_USES_PFN,
+};
+
 struct gfn_to_hva_cache {
 	u64 generation;
 	gpa_t gpa;
@@ -55,9 +63,17 @@ struct gfn_to_hva_cache {
 
 struct gfn_to_pfn_cache {
 	u64 generation;
-	gfn_t gfn;
+	gpa_t gpa;
+	unsigned long uhva;
+	struct kvm_memory_slot *memslot;
+	struct kvm_vcpu *vcpu;
+	struct list_head list;
+	rwlock_t lock;
+	void *khva;
 	kvm_pfn_t pfn;
-	bool dirty;
+	enum pfn_cache_usage usage;
+	bool active;
+	bool valid;
 };
 
 #ifdef KVM_ARCH_NR_OBJS_PER_MEMORY_CACHE
@@ -94,6 +110,7 @@ struct kvm_vcpu_stat_generic {
 	u64 halt_poll_success_hist[HALT_POLL_HIST_COUNT];
 	u64 halt_poll_fail_hist[HALT_POLL_HIST_COUNT];
 	u64 halt_wait_hist[HALT_POLL_HIST_COUNT];
+	u64 blocking;
 };
 
 #define KVM_STATS_NAME_SIZE	48
diff --git a/include/linux/leds.h b/include/linux/leds.h
index a0b730be40ad..ba4861ec73d3 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -360,7 +360,7 @@ struct led_trigger {
 	struct led_hw_trigger_type *trigger_type;
 
 	/* LEDs under control by this trigger (for simple triggers) */
-	rwlock_t	  leddev_list_lock;
+	spinlock_t	  leddev_list_lock;
 	struct list_head  led_cdevs;
 
 	/* Link to next registered trigger */
diff --git a/include/linux/libata.h b/include/linux/libata.h
index c0c64f03e107..9b1d3d8b1252 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -39,25 +39,9 @@
  * compile-time options: to be removed as soon as all the drivers are
  * converted to the new debugging mechanism
  */
-#undef ATA_DEBUG		/* debugging output */
-#undef ATA_VERBOSE_DEBUG	/* yet more debugging output */
 #undef ATA_IRQ_TRAP		/* define to ack screaming irqs */
-#undef ATA_NDEBUG		/* define to disable quick runtime checks */
 
 
-/* note: prints function name for you */
-#ifdef ATA_DEBUG
-#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
-#ifdef ATA_VERBOSE_DEBUG
-#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
-#else
-#define VPRINTK(fmt, args...)
-#endif	/* ATA_VERBOSE_DEBUG */
-#else
-#define DPRINTK(fmt, args...)
-#define VPRINTK(fmt, args...)
-#endif	/* ATA_DEBUG */
-
 #define ata_print_version_once(dev, version)			\
 ({								\
 	static bool __print_once;				\
@@ -68,38 +52,6 @@
 	}							\
 })
 
-/* NEW: debug levels */
-#define HAVE_LIBATA_MSG 1
-
-enum {
-	ATA_MSG_DRV	= 0x0001,
-	ATA_MSG_INFO	= 0x0002,
-	ATA_MSG_PROBE	= 0x0004,
-	ATA_MSG_WARN	= 0x0008,
-	ATA_MSG_MALLOC	= 0x0010,
-	ATA_MSG_CTL	= 0x0020,
-	ATA_MSG_INTR	= 0x0040,
-	ATA_MSG_ERR	= 0x0080,
-};
-
-#define ata_msg_drv(p)    ((p)->msg_enable & ATA_MSG_DRV)
-#define ata_msg_info(p)   ((p)->msg_enable & ATA_MSG_INFO)
-#define ata_msg_probe(p)  ((p)->msg_enable & ATA_MSG_PROBE)
-#define ata_msg_warn(p)   ((p)->msg_enable & ATA_MSG_WARN)
-#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
-#define ata_msg_ctl(p)    ((p)->msg_enable & ATA_MSG_CTL)
-#define ata_msg_intr(p)   ((p)->msg_enable & ATA_MSG_INTR)
-#define ata_msg_err(p)    ((p)->msg_enable & ATA_MSG_ERR)
-
-static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
-{
-	if (dval < 0 || dval >= (sizeof(u32) * 8))
-		return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
-	if (!dval)
-		return 0;
-	return (1 << dval) - 1;
-}
-
 /* defines only for the constants which don't work well as enums */
 #define ATA_TAG_POISON		0xfafbfcfdU
 
@@ -191,7 +143,7 @@ enum {
 	ATA_LFLAG_NO_LPM	= (1 << 8), /* disable LPM on this link */
 	ATA_LFLAG_RST_ONCE	= (1 << 9), /* limit recovery to one reset */
 	ATA_LFLAG_CHANGED	= (1 << 10), /* LPM state changed on this link */
-	ATA_LFLAG_NO_DB_DELAY	= (1 << 11), /* no debounce delay on link resume */
+	ATA_LFLAG_NO_DEBOUNCE_DELAY = (1 << 11), /* no debounce delay on link resume */
 
 	/* struct ata_port flags */
 	ATA_FLAG_SLAVE_POSS	= (1 << 0), /* host supports slave dev */
@@ -394,7 +346,7 @@ enum {
 	/* This should match the actual table size of
 	 * ata_eh_cmd_timeout_table in libata-eh.c.
 	 */
-	ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 6,
+	ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 7,
 
 	/* Horkage types. May be set by libata or controller on drives
 	   (some horkage may be drive/controller pair dependent */
@@ -427,6 +379,8 @@ enum {
 	ATA_HORKAGE_MAX_SEC_1024 = (1 << 25),	/* Limit max sects to 1024 */
 	ATA_HORKAGE_MAX_TRIM_128M = (1 << 26),	/* Limit max trim size to 128M */
 	ATA_HORKAGE_NO_NCQ_ON_ATI = (1 << 27),	/* Disable NCQ on ATI chipset */
+	ATA_HORKAGE_NO_ID_DEV_LOG = (1 << 28),	/* Identify device log missing */
+	ATA_HORKAGE_NO_LOG_DIR	= (1 << 29),	/* Do not read log directory */
 
 	 /* DMA mask for user DMA control: User visible values; DO NOT
 	    renumber */
@@ -565,7 +519,10 @@ struct ata_taskfile {
 	u8			hob_lbam;
 	u8			hob_lbah;
 
-	u8			feature;
+	union {
+		u8		error;
+		u8		feature;
+	};
 	u8			nsect;
 	u8			lbal;
 	u8			lbam;
@@ -573,7 +530,10 @@ struct ata_taskfile {
 
 	u8			device;
 
-	u8			command;	/* IO operation */
+	union {
+		u8		status;
+		u8		command;
+	};
 
 	u32			auxiliary;	/* auxiliary field */
 						/* from SATA 3.1 and */
@@ -676,6 +636,18 @@ struct ata_ering {
 	struct ata_ering_entry	ring[ATA_ERING_SIZE];
 };
 
+struct ata_cpr {
+	u8			num;
+	u8			num_storage_elements;
+	u64			start_lba;
+	u64			num_lbas;
+};
+
+struct ata_cpr_log {
+	u8			nr_cpr;
+	struct ata_cpr		cpr[];
+};
+
 struct ata_device {
 	struct ata_link		*link;
 	unsigned int		devno;		/* 0 or 1 */
@@ -735,6 +707,9 @@ struct ata_device {
 	u32			zac_zones_optimal_nonseq;
 	u32			zac_zones_max_open;
 
+	/* Concurrent positioning ranges */
+	struct ata_cpr_log	*cpr_log;
+
 	/* error history */
 	int			spdn_cnt;
 	/* ering is CLEAR_END, read comment above CLEAR_END */
@@ -868,7 +843,6 @@ struct ata_port {
 
 	unsigned int		hsm_task_state;
 
-	u32			msg_enable;
 	struct list_head	eh_done_q;
 	wait_queue_head_t	eh_wait_q;
 	int			eh_tries;
@@ -917,7 +891,8 @@ struct ata_port_operations {
 	void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
 	void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
 	int  (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
-	unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
+	unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf,
+				__le16 *id);
 
 	void (*dev_config)(struct ata_device *dev);
 
@@ -1112,7 +1087,7 @@ extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
 extern bool ata_link_online(struct ata_link *link);
 extern bool ata_link_offline(struct ata_link *link);
 #ifdef CONFIG_PM
-extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
+extern void ata_host_suspend(struct ata_host *host, pm_message_t mesg);
 extern void ata_host_resume(struct ata_host *host);
 extern void ata_sas_port_suspend(struct ata_port *ap);
 extern void ata_sas_port_resume(struct ata_port *ap);
@@ -1144,13 +1119,15 @@ extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc);
 extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
 		 unsigned int n_elem);
 extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
+extern unsigned int ata_port_classify(struct ata_port *ap,
+				      const struct ata_taskfile *tf);
 extern void ata_dev_disable(struct ata_device *adev);
 extern void ata_id_string(const u16 *id, unsigned char *s,
 			  unsigned int ofs, unsigned int len);
 extern void ata_id_c_string(const u16 *id, unsigned char *s,
 			    unsigned int ofs, unsigned int len);
 extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
-					struct ata_taskfile *tf, u16 *id);
+				       struct ata_taskfile *tf, __le16 *id);
 extern void ata_qc_complete(struct ata_queued_cmd *qc);
 extern u64 ata_qc_get_active(struct ata_port *ap);
 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
@@ -1388,7 +1365,7 @@ extern int ata_link_nr_enabled(struct ata_link *link);
  */
 extern const struct ata_port_operations ata_base_port_ops;
 extern const struct ata_port_operations sata_port_ops;
-extern struct device_attribute *ata_common_sdev_attrs[];
+extern const struct attribute_group *ata_common_sdev_groups[];
 
 /*
  * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
@@ -1416,16 +1393,27 @@ extern struct device_attribute *ata_common_sdev_attrs[];
 	.tag_alloc_policy	= BLK_TAG_ALLOC_RR,		\
 	.slave_configure	= ata_scsi_slave_config
 
+#define ATA_SUBBASE_SHT_QD(drv_name, drv_qd)			\
+	__ATA_BASE_SHT(drv_name),				\
+	.can_queue		= drv_qd,			\
+	.tag_alloc_policy	= BLK_TAG_ALLOC_RR,		\
+	.slave_configure	= ata_scsi_slave_config
+
 #define ATA_BASE_SHT(drv_name)					\
 	ATA_SUBBASE_SHT(drv_name),				\
-	.sdev_attrs		= ata_common_sdev_attrs
+	.sdev_groups		= ata_common_sdev_groups
 
 #ifdef CONFIG_SATA_HOST
-extern struct device_attribute *ata_ncq_sdev_attrs[];
+extern const struct attribute_group *ata_ncq_sdev_groups[];
 
 #define ATA_NCQ_SHT(drv_name)					\
 	ATA_SUBBASE_SHT(drv_name),				\
-	.sdev_attrs		= ata_ncq_sdev_attrs,		\
+	.sdev_groups		= ata_ncq_sdev_groups,		\
+	.change_queue_depth	= ata_scsi_change_queue_depth
+
+#define ATA_NCQ_SHT_QD(drv_name, drv_qd)			\
+	ATA_SUBBASE_SHT_QD(drv_name, drv_qd),			\
+	.sdev_groups		= ata_ncq_sdev_groups,		\
 	.change_queue_depth	= ata_scsi_change_queue_depth
 #endif
 
@@ -1471,51 +1459,61 @@ static inline int sata_srst_pmp(struct ata_link *link)
 	return link->pmp;
 }
 
-/*
- * printk helpers
- */
-__printf(3, 4)
-void ata_port_printk(const struct ata_port *ap, const char *level,
-		     const char *fmt, ...);
-__printf(3, 4)
-void ata_link_printk(const struct ata_link *link, const char *level,
-		     const char *fmt, ...);
-__printf(3, 4)
-void ata_dev_printk(const struct ata_device *dev, const char *level,
-		    const char *fmt, ...);
+#define ata_port_printk(level, ap, fmt, ...)			\
+	pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__)
 
 #define ata_port_err(ap, fmt, ...)				\
-	ata_port_printk(ap, KERN_ERR, fmt, ##__VA_ARGS__)
+	ata_port_printk(err, ap, fmt, ##__VA_ARGS__)
 #define ata_port_warn(ap, fmt, ...)				\
-	ata_port_printk(ap, KERN_WARNING, fmt, ##__VA_ARGS__)
+	ata_port_printk(warn, ap, fmt, ##__VA_ARGS__)
 #define ata_port_notice(ap, fmt, ...)				\
-	ata_port_printk(ap, KERN_NOTICE, fmt, ##__VA_ARGS__)
+	ata_port_printk(notice, ap, fmt, ##__VA_ARGS__)
 #define ata_port_info(ap, fmt, ...)				\
-	ata_port_printk(ap, KERN_INFO, fmt, ##__VA_ARGS__)
+	ata_port_printk(info, ap, fmt, ##__VA_ARGS__)
 #define ata_port_dbg(ap, fmt, ...)				\
-	ata_port_printk(ap, KERN_DEBUG, fmt, ##__VA_ARGS__)
+	ata_port_printk(debug, ap, fmt, ##__VA_ARGS__)
+
+#define ata_link_printk(level, link, fmt, ...)			\
+do {								\
+	if (sata_pmp_attached((link)->ap) ||			\
+	    (link)->ap->slave_link)				\
+		pr_ ## level ("ata%u.%02u: " fmt,		\
+			      (link)->ap->print_id,		\
+			      (link)->pmp,			\
+			      ##__VA_ARGS__);			\
+        else							\
+		pr_ ## level ("ata%u: " fmt,			\
+			      (link)->ap->print_id,		\
+			      ##__VA_ARGS__);			\
+} while (0)
 
 #define ata_link_err(link, fmt, ...)				\
-	ata_link_printk(link, KERN_ERR, fmt, ##__VA_ARGS__)
+	ata_link_printk(err, link, fmt, ##__VA_ARGS__)
 #define ata_link_warn(link, fmt, ...)				\
-	ata_link_printk(link, KERN_WARNING, fmt, ##__VA_ARGS__)
+	ata_link_printk(warn, link, fmt, ##__VA_ARGS__)
 #define ata_link_notice(link, fmt, ...)				\
-	ata_link_printk(link, KERN_NOTICE, fmt, ##__VA_ARGS__)
+	ata_link_printk(notice, link, fmt, ##__VA_ARGS__)
 #define ata_link_info(link, fmt, ...)				\
-	ata_link_printk(link, KERN_INFO, fmt, ##__VA_ARGS__)
+	ata_link_printk(info, link, fmt, ##__VA_ARGS__)
 #define ata_link_dbg(link, fmt, ...)				\
-	ata_link_printk(link, KERN_DEBUG, fmt, ##__VA_ARGS__)
+	ata_link_printk(debug, link, fmt, ##__VA_ARGS__)
+
+#define ata_dev_printk(level, dev, fmt, ...)			\
+        pr_ ## level("ata%u.%02u: " fmt,			\
+               (dev)->link->ap->print_id,			\
+	       (dev)->link->pmp + (dev)->devno,			\
+	       ##__VA_ARGS__)
 
 #define ata_dev_err(dev, fmt, ...)				\
-	ata_dev_printk(dev, KERN_ERR, fmt, ##__VA_ARGS__)
+	ata_dev_printk(err, dev, fmt, ##__VA_ARGS__)
 #define ata_dev_warn(dev, fmt, ...)				\
-	ata_dev_printk(dev, KERN_WARNING, fmt, ##__VA_ARGS__)
+	ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__)
 #define ata_dev_notice(dev, fmt, ...)				\
-	ata_dev_printk(dev, KERN_NOTICE, fmt, ##__VA_ARGS__)
+	ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__)
 #define ata_dev_info(dev, fmt, ...)				\
-	ata_dev_printk(dev, KERN_INFO, fmt, ##__VA_ARGS__)
+	ata_dev_printk(info, dev, fmt, ##__VA_ARGS__)
 #define ata_dev_dbg(dev, fmt, ...)				\
-	ata_dev_printk(dev, KERN_DEBUG, fmt, ##__VA_ARGS__)
+	ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__)
 
 void ata_print_version(const struct device *dev, const char *version);
 
@@ -2049,11 +2047,8 @@ static inline u8 ata_wait_idle(struct ata_port *ap)
 {
 	u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
 
-#ifdef ATA_DEBUG
 	if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
-		ata_port_printk(ap, KERN_DEBUG, "abnormal Status 0x%X\n",
-				status);
-#endif
+		ata_port_dbg(ap, "abnormal Status 0x%X\n", status);
 
 	return status;
 }
diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index 7074aa9af525..0d61e07b6827 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -25,8 +25,6 @@ struct badrange {
 };
 
 enum {
-	/* when a dimm supports both PMEM and BLK access a label is required */
-	NDD_ALIASING = 0,
 	/* unarmed memory devices may not persist writes */
 	NDD_UNARMED = 1,
 	/* locked memory devices should not be accessed */
@@ -35,8 +33,6 @@ enum {
 	NDD_SECURITY_OVERWRITE = 3,
 	/*  tracking whether or not there is a pending device reference */
 	NDD_WORK_PENDING = 4,
-	/* ignore / filter NSLABEL_FLAG_LOCAL for this DIMM, i.e. no aliasing */
-	NDD_NOBLK = 5,
 	/* dimm supports namespace labels */
 	NDD_LABELING = 6,
 
@@ -140,21 +136,6 @@ static inline void __iomem *devm_nvdimm_ioremap(struct device *dev,
 }
 
 struct nvdimm_bus;
-struct module;
-struct nd_blk_region;
-struct nd_blk_region_desc {
-	int (*enable)(struct nvdimm_bus *nvdimm_bus, struct device *dev);
-	int (*do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
-			void *iobuf, u64 len, int rw);
-	struct nd_region_desc ndr_desc;
-};
-
-static inline struct nd_blk_region_desc *to_blk_region_desc(
-		struct nd_region_desc *ndr_desc)
-{
-	return container_of(ndr_desc, struct nd_blk_region_desc, ndr_desc);
-
-}
 
 /*
  * Note that separate bits for locked + unlocked are defined so that
@@ -257,7 +238,6 @@ struct nvdimm_bus *nvdimm_to_bus(struct nvdimm *nvdimm);
 struct nvdimm *to_nvdimm(struct device *dev);
 struct nd_region *to_nd_region(struct device *dev);
 struct device *nd_region_dev(struct nd_region *nd_region);
-struct nd_blk_region *to_nd_blk_region(struct device *dev);
 struct nvdimm_bus_descriptor *to_nd_desc(struct nvdimm_bus *nvdimm_bus);
 struct device *to_nvdimm_bus_dev(struct nvdimm_bus *nvdimm_bus);
 const char *nvdimm_name(struct nvdimm *nvdimm);
@@ -295,10 +275,6 @@ struct nd_region *nvdimm_blk_region_create(struct nvdimm_bus *nvdimm_bus,
 struct nd_region *nvdimm_volatile_region_create(struct nvdimm_bus *nvdimm_bus,
 		struct nd_region_desc *ndr_desc);
 void *nd_region_provider_data(struct nd_region *nd_region);
-void *nd_blk_region_provider_data(struct nd_blk_region *ndbr);
-void nd_blk_region_set_provider_data(struct nd_blk_region *ndbr, void *data);
-struct nvdimm *nd_blk_region_to_dimm(struct nd_blk_region *ndbr);
-unsigned long nd_blk_memremap_flags(struct nd_blk_region *ndbr);
 unsigned int nd_region_acquire_lane(struct nd_region *nd_region);
 void nd_region_release_lane(struct nd_region *nd_region, unsigned int lane);
 u64 nd_fletcher64(void *addr, size_t len, bool le);
diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index dbf8506decca..acb1ad2356f1 100644
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -165,7 +165,18 @@
 #ifndef SYM_END
 #define SYM_END(name, sym_type)				\
 	.type name sym_type ASM_NL			\
-	.size name, .-name
+	.set .L__sym_size_##name, .-name ASM_NL		\
+	.size name, .L__sym_size_##name
+#endif
+
+/* SYM_ALIAS -- use only if you have to */
+#ifndef SYM_ALIAS
+#define SYM_ALIAS(alias, name, sym_type, linkage)			\
+	linkage(alias) ASM_NL						\
+	.set alias, name ASM_NL						\
+	.type alias sym_type ASM_NL					\
+	.set .L__sym_size_##alias, .L__sym_size_##name ASM_NL		\
+	.size alias, .L__sym_size_##alias
 #endif
 
 /* === code annotations === */
@@ -200,30 +211,8 @@
 	SYM_ENTRY(name, linkage, SYM_A_NONE)
 #endif
 
-/*
- * SYM_FUNC_START_LOCAL_ALIAS -- use where there are two local names for one
- * function
- */
-#ifndef SYM_FUNC_START_LOCAL_ALIAS
-#define SYM_FUNC_START_LOCAL_ALIAS(name)		\
-	SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN)
-#endif
-
-/*
- * SYM_FUNC_START_ALIAS -- use where there are two global names for one
- * function
- */
-#ifndef SYM_FUNC_START_ALIAS
-#define SYM_FUNC_START_ALIAS(name)			\
-	SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN)
-#endif
-
 /* SYM_FUNC_START -- use for global functions */
 #ifndef SYM_FUNC_START
-/*
- * The same as SYM_FUNC_START_ALIAS, but we will need to distinguish these two
- * later.
- */
 #define SYM_FUNC_START(name)				\
 	SYM_START(name, SYM_L_GLOBAL, SYM_A_ALIGN)
 #endif
@@ -236,7 +225,6 @@
 
 /* SYM_FUNC_START_LOCAL -- use for local functions */
 #ifndef SYM_FUNC_START_LOCAL
-/* the same as SYM_FUNC_START_LOCAL_ALIAS, see comment near SYM_FUNC_START */
 #define SYM_FUNC_START_LOCAL(name)			\
 	SYM_START(name, SYM_L_LOCAL, SYM_A_ALIGN)
 #endif
@@ -259,22 +247,39 @@
 	SYM_START(name, SYM_L_WEAK, SYM_A_NONE)
 #endif
 
-/* SYM_FUNC_END_ALIAS -- the end of LOCAL_ALIASed or ALIASed function */
-#ifndef SYM_FUNC_END_ALIAS
-#define SYM_FUNC_END_ALIAS(name)			\
-	SYM_END(name, SYM_T_FUNC)
-#endif
-
 /*
  * SYM_FUNC_END -- the end of SYM_FUNC_START_LOCAL, SYM_FUNC_START,
  * SYM_FUNC_START_WEAK, ...
  */
 #ifndef SYM_FUNC_END
-/* the same as SYM_FUNC_END_ALIAS, see comment near SYM_FUNC_START */
 #define SYM_FUNC_END(name)				\
 	SYM_END(name, SYM_T_FUNC)
 #endif
 
+/*
+ * SYM_FUNC_ALIAS -- define a global alias for an existing function
+ */
+#ifndef SYM_FUNC_ALIAS
+#define SYM_FUNC_ALIAS(alias, name)					\
+	SYM_ALIAS(alias, name, SYM_T_FUNC, SYM_L_GLOBAL)
+#endif
+
+/*
+ * SYM_FUNC_ALIAS_LOCAL -- define a local alias for an existing function
+ */
+#ifndef SYM_FUNC_ALIAS_LOCAL
+#define SYM_FUNC_ALIAS_LOCAL(alias, name)				\
+	SYM_ALIAS(alias, name, SYM_T_FUNC, SYM_L_LOCAL)
+#endif
+
+/*
+ * SYM_FUNC_ALIAS_WEAK -- define a weak global alias for an existing function
+ */
+#ifndef SYM_FUNC_ALIAS_WEAK
+#define SYM_FUNC_ALIAS_WEAK(alias, name)				\
+	SYM_ALIAS(alias, name, SYM_T_FUNC, SYM_L_WEAK)
+#endif
+
 /* SYM_CODE_START -- use for non-C (special) functions */
 #ifndef SYM_CODE_START
 #define SYM_CODE_START(name)				\
diff --git a/include/linux/linkmode.h b/include/linux/linkmode.h
index f8397f300fcd..15e0e0209da4 100644
--- a/include/linux/linkmode.h
+++ b/include/linux/linkmode.h
@@ -66,11 +66,6 @@ static inline void linkmode_mod_bit(int nr, volatile unsigned long *addr,
 		linkmode_clear_bit(nr, addr);
 }
 
-static inline void linkmode_change_bit(int nr, volatile unsigned long *addr)
-{
-	__change_bit(nr, addr);
-}
-
 static inline int linkmode_test_bit(int nr, const volatile unsigned long *addr)
 {
 	return test_bit(nr, addr);
diff --git a/include/linux/list.h b/include/linux/list.h
index f2af4b4aa4e9..dd6c2041d09c 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -2,11 +2,13 @@
 #ifndef _LINUX_LIST_H
 #define _LINUX_LIST_H
 
+#include <linux/container_of.h>
 #include <linux/types.h>
 #include <linux/stddef.h>
 #include <linux/poison.h>
 #include <linux/const.h>
-#include <linux/kernel.h>
+
+#include <asm/barrier.h>
 
 /*
  * Circular doubly linked list implementation.
@@ -256,8 +258,7 @@ static inline void list_bulk_move_tail(struct list_head *head,
  * @list: the entry to test
  * @head: the head of the list
  */
-static inline int list_is_first(const struct list_head *list,
-					const struct list_head *head)
+static inline int list_is_first(const struct list_head *list, const struct list_head *head)
 {
 	return list->prev == head;
 }
@@ -267,13 +268,22 @@ static inline int list_is_first(const struct list_head *list,
  * @list: the entry to test
  * @head: the head of the list
  */
-static inline int list_is_last(const struct list_head *list,
-				const struct list_head *head)
+static inline int list_is_last(const struct list_head *list, const struct list_head *head)
 {
 	return list->next == head;
 }
 
 /**
+ * list_is_head - tests whether @list is the list @head
+ * @list: the entry to test
+ * @head: the head of the list
+ */
+static inline int list_is_head(const struct list_head *list, const struct list_head *head)
+{
+	return list == head;
+}
+
+/**
  * list_empty - tests whether a list is empty
  * @head: the list to test.
  */
@@ -316,7 +326,7 @@ static inline void list_del_init_careful(struct list_head *entry)
 static inline int list_empty_careful(const struct list_head *head)
 {
 	struct list_head *next = smp_load_acquire(&head->next);
-	return (next == head) && (next == head->prev);
+	return list_is_head(next, head) && (next == head->prev);
 }
 
 /**
@@ -391,10 +401,9 @@ static inline void list_cut_position(struct list_head *list,
 {
 	if (list_empty(head))
 		return;
-	if (list_is_singular(head) &&
-		(head->next != entry && head != entry))
+	if (list_is_singular(head) && !list_is_head(entry, head) && (entry != head->next))
 		return;
-	if (entry == head)
+	if (list_is_head(entry, head))
 		INIT_LIST_HEAD(list);
 	else
 		__list_cut_position(list, head, entry);
@@ -568,7 +577,7 @@ static inline void list_splice_tail_init(struct list_head *list,
  * @head:	the head for your list.
  */
 #define list_for_each(pos, head) \
-	for (pos = (head)->next; pos != (head); pos = pos->next)
+	for (pos = (head)->next; !list_is_head(pos, (head)); pos = pos->next)
 
 /**
  * list_for_each_continue - continue iteration over a list
@@ -578,7 +587,7 @@ static inline void list_splice_tail_init(struct list_head *list,
  * Continue to iterate over a list, continuing after the current position.
  */
 #define list_for_each_continue(pos, head) \
-	for (pos = pos->next; pos != (head); pos = pos->next)
+	for (pos = pos->next; !list_is_head(pos, (head)); pos = pos->next)
 
 /**
  * list_for_each_prev	-	iterate over a list backwards
@@ -586,7 +595,7 @@ static inline void list_splice_tail_init(struct list_head *list,
  * @head:	the head for your list.
  */
 #define list_for_each_prev(pos, head) \
-	for (pos = (head)->prev; pos != (head); pos = pos->prev)
+	for (pos = (head)->prev; !list_is_head(pos, (head)); pos = pos->prev)
 
 /**
  * list_for_each_safe - iterate over a list safe against removal of list entry
@@ -595,8 +604,9 @@ static inline void list_splice_tail_init(struct list_head *list,
  * @head:	the head for your list.
  */
 #define list_for_each_safe(pos, n, head) \
-	for (pos = (head)->next, n = pos->next; pos != (head); \
-		pos = n, n = pos->next)
+	for (pos = (head)->next, n = pos->next; \
+	     !list_is_head(pos, (head)); \
+	     pos = n, n = pos->next)
 
 /**
  * list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry
@@ -606,7 +616,7 @@ static inline void list_splice_tail_init(struct list_head *list,
  */
 #define list_for_each_prev_safe(pos, n, head) \
 	for (pos = (head)->prev, n = pos->prev; \
-	     pos != (head); \
+	     !list_is_head(pos, (head)); \
 	     pos = n, n = pos->prev)
 
 /**
diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h
index 1b5fceb565df..b35968ee9fb5 100644
--- a/include/linux/list_lru.h
+++ b/include/linux/list_lru.h
@@ -11,6 +11,7 @@
 #include <linux/list.h>
 #include <linux/nodemask.h>
 #include <linux/shrinker.h>
+#include <linux/xarray.h>
 
 struct mem_cgroup;
 
@@ -33,8 +34,8 @@ struct list_lru_one {
 
 struct list_lru_memcg {
 	struct rcu_head		rcu;
-	/* array of per cgroup lists, indexed by memcg_cache_id */
-	struct list_lru_one	*lru[];
+	/* array of per cgroup per node lists, indexed by node id */
+	struct list_lru_one	node[];
 };
 
 struct list_lru_node {
@@ -42,11 +43,7 @@ struct list_lru_node {
 	spinlock_t		lock;
 	/* global list, used for the root cgroup in cgroup aware lrus */
 	struct list_lru_one	lru;
-#ifdef CONFIG_MEMCG_KMEM
-	/* for cgroup aware lrus points to per cgroup lists, otherwise NULL */
-	struct list_lru_memcg	__rcu *memcg_lrus;
-#endif
-	long nr_items;
+	long			nr_items;
 } ____cacheline_aligned_in_smp;
 
 struct list_lru {
@@ -55,6 +52,7 @@ struct list_lru {
 	struct list_head	list;
 	int			shrinker_id;
 	bool			memcg_aware;
+	struct xarray		xa;
 #endif
 };
 
@@ -69,8 +67,9 @@ int __list_lru_init(struct list_lru *lru, bool memcg_aware,
 #define list_lru_init_memcg(lru, shrinker)		\
 	__list_lru_init((lru), true, NULL, shrinker)
 
-int memcg_update_all_list_lrus(int num_memcgs);
-void memcg_drain_all_list_lrus(int src_idx, struct mem_cgroup *dst_memcg);
+int memcg_list_lru_alloc(struct mem_cgroup *memcg, struct list_lru *lru,
+			 gfp_t gfp);
+void memcg_reparent_list_lrus(struct mem_cgroup *memcg, struct mem_cgroup *parent);
 
 /**
  * list_lru_add: add an element to the lru list's tail
diff --git a/include/linux/llist.h b/include/linux/llist.h
index 24f207b0190b..85bda2d02d65 100644
--- a/include/linux/llist.h
+++ b/include/linux/llist.h
@@ -49,7 +49,9 @@
  */
 
 #include <linux/atomic.h>
-#include <linux/kernel.h>
+#include <linux/container_of.h>
+#include <linux/stddef.h>
+#include <linux/types.h>
 
 struct llist_head {
 	struct llist_node *first;
diff --git a/include/linux/llist_api.h b/include/linux/llist_api.h
new file mode 100644
index 000000000000..625bec0393a1
--- /dev/null
+++ b/include/linux/llist_api.h
@@ -0,0 +1 @@
+#include <linux/llist.h>
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index c4ae6506b8b3..fcef192e5e45 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -303,10 +303,15 @@ void		  nlmsvc_invalidate_all(void);
 int           nlmsvc_unlock_all_by_sb(struct super_block *sb);
 int           nlmsvc_unlock_all_by_ip(struct sockaddr *server_addr);
 
+static inline struct file *nlmsvc_file_file(struct nlm_file *file)
+{
+	return file->f_file[O_RDONLY] ?
+	       file->f_file[O_RDONLY] : file->f_file[O_WRONLY];
+}
+
 static inline struct inode *nlmsvc_file_inode(struct nlm_file *file)
 {
-	return locks_inode(file->f_file[O_RDONLY] ?
-			   file->f_file[O_RDONLY] : file->f_file[O_WRONLY]);
+	return locks_inode(nlmsvc_file_file(file));
 }
 
 static inline int __nlm_privileged_request4(const struct sockaddr *sap)
diff --git a/include/linux/lockd/xdr.h b/include/linux/lockd/xdr.h
index a98309c0121c..398f70093cd3 100644
--- a/include/linux/lockd/xdr.h
+++ b/include/linux/lockd/xdr.h
@@ -96,18 +96,19 @@ struct nlm_reboot {
  */
 #define NLMSVC_XDRSIZE		sizeof(struct nlm_args)
 
-int	nlmsvc_decode_testargs(struct svc_rqst *, __be32 *);
-int	nlmsvc_encode_testres(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *);
-int	nlmsvc_encode_res(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_res(struct svc_rqst *, __be32 *);
-int	nlmsvc_encode_void(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_void(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *);
-int	nlmsvc_encode_shareres(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_notify(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_reboot(struct svc_rqst *, __be32 *);
+bool	nlmsvc_decode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_decode_testargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_decode_lockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_decode_cancargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_decode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_decode_reboot(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_decode_shareargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_decode_notify(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+
+bool	nlmsvc_encode_testres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_encode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_encode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlmsvc_encode_shareres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 
 #endif /* LOCKD_XDR_H */
diff --git a/include/linux/lockd/xdr4.h b/include/linux/lockd/xdr4.h
index 5ae766f26e04..9a6b55da8fd6 100644
--- a/include/linux/lockd/xdr4.h
+++ b/include/linux/lockd/xdr4.h
@@ -22,21 +22,20 @@
 #define	nlm4_fbig		cpu_to_be32(NLM_FBIG)
 #define	nlm4_failed		cpu_to_be32(NLM_FAILED)
 
-
-
-int	nlm4svc_decode_testargs(struct svc_rqst *, __be32 *);
-int	nlm4svc_encode_testres(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_lockargs(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_cancargs(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_unlockargs(struct svc_rqst *, __be32 *);
-int	nlm4svc_encode_res(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_res(struct svc_rqst *, __be32 *);
-int	nlm4svc_encode_void(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_void(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_shareargs(struct svc_rqst *, __be32 *);
-int	nlm4svc_encode_shareres(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_notify(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_reboot(struct svc_rqst *, __be32 *);
+bool	nlm4svc_decode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_decode_testargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_decode_lockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_decode_cancargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_decode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_decode_reboot(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_decode_shareargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_decode_notify(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+
+bool	nlm4svc_encode_testres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_encode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_encode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+bool	nlm4svc_encode_shareres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 
 extern const struct rpc_version nlm_version4;
 
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 9fe165beb0f9..467b94257105 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -481,23 +481,6 @@ do {								\
 
 #endif /* CONFIG_LOCK_STAT */
 
-#ifdef CONFIG_LOCKDEP
-
-/*
- * On lockdep we dont want the hand-coded irq-enable of
- * _raw_*_lock_flags() code, because lockdep assumes
- * that interrupts are not re-enabled during lock-acquire:
- */
-#define LOCK_CONTENDED_FLAGS(_lock, try, lock, lockfl, flags) \
-	LOCK_CONTENDED((_lock), (try), (lock))
-
-#else /* CONFIG_LOCKDEP */
-
-#define LOCK_CONTENDED_FLAGS(_lock, try, lock, lockfl, flags) \
-	lockfl((_lock), (flags))
-
-#endif /* CONFIG_LOCKDEP */
-
 #ifdef CONFIG_PROVE_LOCKING
 extern void print_irqtrace_events(struct task_struct *curr);
 #else
diff --git a/include/linux/lockdep_api.h b/include/linux/lockdep_api.h
new file mode 100644
index 000000000000..907e66979ab2
--- /dev/null
+++ b/include/linux/lockdep_api.h
@@ -0,0 +1 @@
+#include <linux/lockdep.h>
diff --git a/include/linux/lockdep_types.h b/include/linux/lockdep_types.h
index 3e726ace5c62..d22430840b53 100644
--- a/include/linux/lockdep_types.h
+++ b/include/linux/lockdep_types.h
@@ -21,7 +21,7 @@ enum lockdep_wait_type {
 	LD_WAIT_SPIN,		/* spin loops, raw_spinlock_t etc.. */
 
 #ifdef CONFIG_PROVE_RAW_LOCK_NESTING
-	LD_WAIT_CONFIG,		/* CONFIG_PREEMPT_LOCK, spinlock_t etc.. */
+	LD_WAIT_CONFIG,		/* preemptible in PREEMPT_RT, spinlock_t etc.. */
 #else
 	LD_WAIT_CONFIG = LD_WAIT_SPIN,
 #endif
diff --git a/include/linux/log2.h b/include/linux/log2.h
index df0b155c2141..9f30d087a128 100644
--- a/include/linux/log2.h
+++ b/include/linux/log2.h
@@ -18,7 +18,7 @@
  * - the arch is not required to handle n==0 if implementing the fallback
  */
 #ifndef CONFIG_ARCH_HAS_ILOG2_U32
-static inline __attribute__((const))
+static __always_inline __attribute__((const))
 int __ilog2_u32(u32 n)
 {
 	return fls(n) - 1;
@@ -26,7 +26,7 @@ int __ilog2_u32(u32 n)
 #endif
 
 #ifndef CONFIG_ARCH_HAS_ILOG2_U64
-static inline __attribute__((const))
+static __always_inline __attribute__((const))
 int __ilog2_u64(u64 n)
 {
 	return fls64(n) - 1;
diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
index 2adeea44c0d5..db924fe379c9 100644
--- a/include/linux/lsm_hook_defs.h
+++ b/include/linux/lsm_hook_defs.h
@@ -26,13 +26,13 @@
  *   #undef LSM_HOOK
  * };
  */
-LSM_HOOK(int, 0, binder_set_context_mgr, struct task_struct *mgr)
-LSM_HOOK(int, 0, binder_transaction, struct task_struct *from,
-	 struct task_struct *to)
-LSM_HOOK(int, 0, binder_transfer_binder, struct task_struct *from,
-	 struct task_struct *to)
-LSM_HOOK(int, 0, binder_transfer_file, struct task_struct *from,
-	 struct task_struct *to, struct file *file)
+LSM_HOOK(int, 0, binder_set_context_mgr, const struct cred *mgr)
+LSM_HOOK(int, 0, binder_transaction, const struct cred *from,
+	 const struct cred *to)
+LSM_HOOK(int, 0, binder_transfer_binder, const struct cred *from,
+	 const struct cred *to)
+LSM_HOOK(int, 0, binder_transfer_file, const struct cred *from,
+	 const struct cred *to, struct file *file)
 LSM_HOOK(int, 0, ptrace_access_check, struct task_struct *child,
 	 unsigned int mode)
 LSM_HOOK(int, 0, ptrace_traceme, struct task_struct *parent)
@@ -78,12 +78,11 @@ LSM_HOOK(int, 0, sb_set_mnt_opts, struct super_block *sb, void *mnt_opts,
 LSM_HOOK(int, 0, sb_clone_mnt_opts, const struct super_block *oldsb,
 	 struct super_block *newsb, unsigned long kern_flags,
 	 unsigned long *set_kern_flags)
-LSM_HOOK(int, 0, sb_add_mnt_opt, const char *option, const char *val,
-	 int len, void **mnt_opts)
 LSM_HOOK(int, 0, move_mount, const struct path *from_path,
 	 const struct path *to_path)
-LSM_HOOK(int, 0, dentry_init_security, struct dentry *dentry,
-	 int mode, const struct qstr *name, void **ctx, u32 *ctxlen)
+LSM_HOOK(int, -EOPNOTSUPP, dentry_init_security, struct dentry *dentry,
+	 int mode, const struct qstr *name, const char **xattr_name,
+	 void **ctx, u32 *ctxlen)
 LSM_HOOK(int, 0, dentry_create_files_as, struct dentry *dentry, int mode,
 	 struct qstr *name, const struct cred *old, struct cred *new)
 
@@ -205,8 +204,7 @@ LSM_HOOK(int, 0, task_fix_setgid, struct cred *new, const struct cred * old,
 LSM_HOOK(int, 0, task_setpgid, struct task_struct *p, pid_t pgid)
 LSM_HOOK(int, 0, task_getpgid, struct task_struct *p)
 LSM_HOOK(int, 0, task_getsid, struct task_struct *p)
-LSM_HOOK(void, LSM_RET_VOID, task_getsecid_subj,
-	 struct task_struct *p, u32 *secid)
+LSM_HOOK(void, LSM_RET_VOID, current_getsecid_subj, u32 *secid)
 LSM_HOOK(void, LSM_RET_VOID, task_getsecid_obj,
 	 struct task_struct *p, u32 *secid)
 LSM_HOOK(int, 0, task_setnice, struct task_struct *p, int nice)
@@ -328,12 +326,14 @@ LSM_HOOK(int, 0, tun_dev_create, void)
 LSM_HOOK(int, 0, tun_dev_attach_queue, void *security)
 LSM_HOOK(int, 0, tun_dev_attach, struct sock *sk, void *security)
 LSM_HOOK(int, 0, tun_dev_open, void *security)
-LSM_HOOK(int, 0, sctp_assoc_request, struct sctp_endpoint *ep,
+LSM_HOOK(int, 0, sctp_assoc_request, struct sctp_association *asoc,
 	 struct sk_buff *skb)
 LSM_HOOK(int, 0, sctp_bind_connect, struct sock *sk, int optname,
 	 struct sockaddr *address, int addrlen)
-LSM_HOOK(void, LSM_RET_VOID, sctp_sk_clone, struct sctp_endpoint *ep,
+LSM_HOOK(void, LSM_RET_VOID, sctp_sk_clone, struct sctp_association *asoc,
 	 struct sock *sk, struct sock *newsk)
+LSM_HOOK(int, 0, sctp_assoc_established, struct sctp_association *asoc,
+	 struct sk_buff *skb)
 #endif /* CONFIG_SECURITY_NETWORK */
 
 #ifdef CONFIG_SECURITY_INFINIBAND
@@ -402,3 +402,8 @@ LSM_HOOK(void, LSM_RET_VOID, perf_event_free, struct perf_event *event)
 LSM_HOOK(int, 0, perf_event_read, struct perf_event *event)
 LSM_HOOK(int, 0, perf_event_write, struct perf_event *event)
 #endif /* CONFIG_PERF_EVENTS */
+
+#ifdef CONFIG_IO_URING
+LSM_HOOK(int, 0, uring_override_creds, const struct cred *new)
+LSM_HOOK(int, 0, uring_sqpoll, void)
+#endif /* CONFIG_IO_URING */
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 5c4c5c0602cb..419b5febc3ca 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -180,8 +180,6 @@
  *	Copy all security options from a given superblock to another
  *	@oldsb old superblock which contain information to clone
  *	@newsb new superblock which needs filled in
- * @sb_add_mnt_opt:
- * 	Add one mount @option to @mnt_opts.
  * @sb_parse_opts_str:
  *	Parse a string of security data filling in the opts structure
  *	@options string containing all mount options known by the LSM
@@ -196,6 +194,9 @@
  *	@dentry dentry to use in calculating the context.
  *	@mode mode used to determine resource type.
  *	@name name of the last path component used to create file
+ *	@xattr_name pointer to place the pointer to security xattr name.
+ *		    Caller does not have to free the resulting pointer. Its
+ *		    a pointer to static string.
  *	@ctx pointer to place the pointer to the resulting context in.
  *	@ctxlen point to place the length of the resulting context.
  * @dentry_create_files_as:
@@ -716,11 +717,9 @@
  *	@p.
  *	@p contains the task_struct for the process.
  *	Return 0 if permission is granted.
- * @task_getsecid_subj:
- *	Retrieve the subjective security identifier of the task_struct in @p
- *	and return it in @secid.  Special care must be taken to ensure that @p
- *	is the either the "current" task, or the caller has exclusive access
- *	to @p.
+ * @current_getsecid_subj:
+ *	Retrieve the subjective security identifier of the current task and
+ *	return it in @secid.
  *	In case of failure, @secid will be set to zero.
  * @task_getsecid_obj:
  *	Retrieve the objective security identifier of the task_struct in @p
@@ -1024,9 +1023,9 @@
  * Security hooks for SCTP
  *
  * @sctp_assoc_request:
- *	Passes the @ep and @chunk->skb of the association INIT packet to
+ *	Passes the @asoc and @chunk->skb of the association INIT packet to
  *	the security module.
- *	@ep pointer to sctp endpoint structure.
+ *	@asoc pointer to sctp association structure.
  *	@skb pointer to skbuff of association packet.
  *	Return 0 on success, error on failure.
  * @sctp_bind_connect:
@@ -1044,9 +1043,14 @@
  *	Called whenever a new socket is created by accept(2) (i.e. a TCP
  *	style socket) or when a socket is 'peeled off' e.g userspace
  *	calls sctp_peeloff(3).
- *	@ep pointer to current sctp endpoint structure.
+ *	@asoc pointer to current sctp association structure.
  *	@sk pointer to current sock structure.
- *	@sk pointer to new sock structure.
+ *	@newsk pointer to new sock structure.
+ * @sctp_assoc_established:
+ *	Passes the @asoc and @chunk->skb of the association COOKIE_ACK packet
+ *	to the security module.
+ *	@asoc pointer to sctp association structure.
+ *	@skb pointer to skbuff of association packet.
  *
  * Security hooks for Infiniband
  *
@@ -1313,22 +1317,22 @@
  *
  * @binder_set_context_mgr:
  *	Check whether @mgr is allowed to be the binder context manager.
- *	@mgr contains the task_struct for the task being registered.
+ *	@mgr contains the struct cred for the current binder process.
  *	Return 0 if permission is granted.
  * @binder_transaction:
  *	Check whether @from is allowed to invoke a binder transaction call
  *	to @to.
- *	@from contains the task_struct for the sending task.
- *	@to contains the task_struct for the receiving task.
+ *	@from contains the struct cred for the sending process.
+ *	@to contains the struct cred for the receiving process.
  * @binder_transfer_binder:
  *	Check whether @from is allowed to transfer a binder reference to @to.
- *	@from contains the task_struct for the sending task.
- *	@to contains the task_struct for the receiving task.
+ *	@from contains the struct cred for the sending process.
+ *	@to contains the struct cred for the receiving process.
  * @binder_transfer_file:
  *	Check whether @from is allowed to transfer @file to @to.
- *	@from contains the task_struct for the sending task.
+ *	@from contains the struct cred for the sending process.
  *	@file contains the struct file being transferred.
- *	@to contains the task_struct for the receiving task.
+ *	@to contains the struct cred for the receiving process.
  *
  * @ptrace_access_check:
  *	Check permission before allowing the current process to trace the
@@ -1557,6 +1561,19 @@
  * 	Read perf_event security info if allowed.
  * @perf_event_write:
  * 	Write perf_event security info if allowed.
+ *
+ * Security hooks for io_uring
+ *
+ * @uring_override_creds:
+ *      Check if the current task, executing an io_uring operation, is allowed
+ *      to override it's credentials with @new.
+ *
+ *      @new: the new creds to use
+ *
+ * @uring_sqpoll:
+ *      Check whether the current task is allowed to spawn a io_uring polling
+ *      thread (IORING_SETUP_SQPOLL).
+ *
  */
 union security_list_options {
 	#define LSM_HOOK(RET, DEFAULT, NAME, ...) RET (*NAME)(__VA_ARGS__);
diff --git a/include/linux/map_benchmark.h b/include/linux/map_benchmark.h
new file mode 100644
index 000000000000..62674c83bde4
--- /dev/null
+++ b/include/linux/map_benchmark.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2022 HiSilicon Limited.
+ */
+
+#ifndef _KERNEL_DMA_BENCHMARK_H
+#define _KERNEL_DMA_BENCHMARK_H
+
+#define DMA_MAP_BENCHMARK       _IOWR('d', 1, struct map_benchmark)
+#define DMA_MAP_MAX_THREADS     1024
+#define DMA_MAP_MAX_SECONDS     300
+#define DMA_MAP_MAX_TRANS_DELAY (10 * NSEC_PER_MSEC)
+
+#define DMA_MAP_BIDIRECTIONAL   0
+#define DMA_MAP_TO_DEVICE       1
+#define DMA_MAP_FROM_DEVICE     2
+
+struct map_benchmark {
+	__u64 avg_map_100ns; /* average map latency in 100ns */
+	__u64 map_stddev; /* standard deviation of map latency */
+	__u64 avg_unmap_100ns; /* as above */
+	__u64 unmap_stddev;
+	__u32 threads; /* how many threads will do map/unmap in parallel */
+	__u32 seconds; /* how long the test will last */
+	__s32 node; /* which numa node this benchmark will run on */
+	__u32 dma_bits; /* DMA addressing capability */
+	__u32 dma_dir; /* DMA data direction */
+	__u32 dma_trans_ns; /* time for DMA transmission in ns */
+	__u32 granule;  /* how many PAGE_SIZE will do map/unmap once a time */
+};
+#endif /* _KERNEL_DMA_BENCHMARK_H */
diff --git a/include/linux/math.h b/include/linux/math.h
index 53674a327e39..439b8f0b9ebd 100644
--- a/include/linux/math.h
+++ b/include/linux/math.h
@@ -2,6 +2,7 @@
 #ifndef _LINUX_MATH_H
 #define _LINUX_MATH_H
 
+#include <linux/types.h>
 #include <asm/div64.h>
 #include <uapi/linux/kernel.h>
 
@@ -106,6 +107,17 @@
 }							\
 )
 
+#define __STRUCT_FRACT(type)				\
+struct type##_fract {					\
+	__##type numerator;				\
+	__##type denominator;				\
+};
+__STRUCT_FRACT(s16)
+__STRUCT_FRACT(u16)
+__STRUCT_FRACT(s32)
+__STRUCT_FRACT(u32)
+#undef __STRUCT_FRACT
+
 /*
  * Multiplies an integer by a fraction, while avoiding unnecessary
  * overflow or loss of precision.
diff --git a/include/linux/math64.h b/include/linux/math64.h
index 2928f03d6d46..a14f40de1dca 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -301,6 +301,19 @@ u64 mul_u64_u64_div_u64(u64 a, u64 mul, u64 div);
 	({ u64 _tmp = (divisor); div64_u64((dividend) + _tmp / 2, _tmp); })
 
 /*
+ * DIV_U64_ROUND_CLOSEST - unsigned 64bit divide with 32bit divisor rounded to nearest integer
+ * @dividend: unsigned 64bit dividend
+ * @divisor: unsigned 32bit divisor
+ *
+ * Divide unsigned 64bit dividend by unsigned 32bit divisor
+ * and round to closest integer.
+ *
+ * Return: dividend / divisor rounded to nearest integer
+ */
+#define DIV_U64_ROUND_CLOSEST(dividend, divisor)	\
+	({ u32 _tmp = (divisor); div_u64((u64)(dividend) + _tmp / 2, _tmp); })
+
+/*
  * DIV_S64_ROUND_CLOSEST - signed 64bit divide with 32bit divisor rounded to nearest integer
  * @dividend: signed 64bit dividend
  * @divisor: signed 32bit divisor
diff --git a/include/linux/mc146818rtc.h b/include/linux/mc146818rtc.h
index 0661af17a758..b0da04fe087b 100644
--- a/include/linux/mc146818rtc.h
+++ b/include/linux/mc146818rtc.h
@@ -86,6 +86,8 @@ struct cmos_rtc_board_info {
    /* 2 values for divider stage reset, others for "testing purposes only" */
 #  define RTC_DIV_RESET1	0x60
 #  define RTC_DIV_RESET2	0x70
+   /* In AMD BKDG bit 5 and 6 are reserved, bit 4 is for select dv0 bank */
+#  define RTC_AMD_BANK_SELECT	0x10
   /* Periodic intr. / Square wave rate select. 0=none, 1=32.8kHz,... 15=2Hz */
 # define RTC_RATE_SELECT 	0x0F
 
@@ -123,7 +125,11 @@ struct cmos_rtc_board_info {
 #define RTC_IO_EXTENT_USED      RTC_IO_EXTENT
 #endif /* ARCH_RTC_LOCATION */
 
-unsigned int mc146818_get_time(struct rtc_time *time);
+bool mc146818_does_rtc_work(void);
+int mc146818_get_time(struct rtc_time *time);
 int mc146818_set_time(struct rtc_time *time);
 
+bool mc146818_avoid_UIP(void (*callback)(unsigned char seconds, void *param),
+			void *param);
+
 #endif /* _MC146818RTC_H */
diff --git a/include/linux/mdev.h b/include/linux/mdev.h
index 68427e8fadeb..15d03f6532d0 100644
--- a/include/linux/mdev.h
+++ b/include/linux/mdev.h
@@ -18,7 +18,6 @@ struct mdev_device {
 	void *driver_data;
 	struct list_head next;
 	struct mdev_type *type;
-	struct device *iommu_device;
 	bool active;
 };
 
@@ -27,25 +26,6 @@ static inline struct mdev_device *to_mdev_device(struct device *dev)
 	return container_of(dev, struct mdev_device, dev);
 }
 
-/*
- * Called by the parent device driver to set the device which represents
- * this mdev in iommu protection scope. By default, the iommu device is
- * NULL, that indicates using vendor defined isolation.
- *
- * @dev: the mediated device that iommu will isolate.
- * @iommu_device: a pci device which represents the iommu for @dev.
- */
-static inline void mdev_set_iommu_device(struct mdev_device *mdev,
-					 struct device *iommu_device)
-{
-	mdev->iommu_device = iommu_device;
-}
-
-static inline struct device *mdev_get_iommu_device(struct mdev_device *mdev)
-{
-	return mdev->iommu_device;
-}
-
 unsigned int mdev_get_type_group_id(struct mdev_device *mdev);
 unsigned int mtype_get_type_group_id(struct mdev_type *mtype);
 struct device *mtype_get_parent_dev(struct mdev_type *mtype);
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 5e6dc38f418e..ecac96d52e01 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -7,6 +7,7 @@
 #define __LINUX_MDIO_H__
 
 #include <uapi/linux/mdio.h>
+#include <linux/bitfield.h>
 #include <linux/mod_devicetable.h>
 
 /* Or MII_ADDR_C45 into regnum for read/write on mii_bus to enable the 21 bit
@@ -14,6 +15,7 @@
  */
 #define MII_ADDR_C45		(1<<30)
 #define MII_DEVADDR_C45_SHIFT	16
+#define MII_DEVADDR_C45_MASK	GENMASK(20, 16)
 #define MII_REGADDR_C45_MASK	GENMASK(15, 0)
 
 struct gpio_desc;
@@ -349,12 +351,48 @@ int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val);
 int mdiobus_write_nested(struct mii_bus *bus, int addr, u32 regnum, u16 val);
 int mdiobus_modify(struct mii_bus *bus, int addr, u32 regnum, u16 mask,
 		   u16 set);
+int mdiobus_modify_changed(struct mii_bus *bus, int addr, u32 regnum,
+			   u16 mask, u16 set);
+
+static inline int mdiodev_read(struct mdio_device *mdiodev, u32 regnum)
+{
+	return mdiobus_read(mdiodev->bus, mdiodev->addr, regnum);
+}
+
+static inline int mdiodev_write(struct mdio_device *mdiodev, u32 regnum,
+				u16 val)
+{
+	return mdiobus_write(mdiodev->bus, mdiodev->addr, regnum, val);
+}
+
+static inline int mdiodev_modify(struct mdio_device *mdiodev, u32 regnum,
+				 u16 mask, u16 set)
+{
+	return mdiobus_modify(mdiodev->bus, mdiodev->addr, regnum, mask, set);
+}
+
+static inline int mdiodev_modify_changed(struct mdio_device *mdiodev,
+					 u32 regnum, u16 mask, u16 set)
+{
+	return mdiobus_modify_changed(mdiodev->bus, mdiodev->addr, regnum,
+				      mask, set);
+}
 
 static inline u32 mdiobus_c45_addr(int devad, u16 regnum)
 {
 	return MII_ADDR_C45 | devad << MII_DEVADDR_C45_SHIFT | regnum;
 }
 
+static inline u16 mdiobus_c45_regad(u32 regnum)
+{
+	return FIELD_GET(MII_REGADDR_C45_MASK, regnum);
+}
+
+static inline u16 mdiobus_c45_devad(u32 regnum)
+{
+	return FIELD_GET(MII_DEVADDR_C45_MASK, regnum);
+}
+
 static inline int __mdiobus_c45_read(struct mii_bus *bus, int prtad, int devad,
 				     u16 regnum)
 {
diff --git a/include/linux/mdio/mdio-mscc-miim.h b/include/linux/mdio/mdio-mscc-miim.h
new file mode 100644
index 000000000000..5b4ed2c3cbb9
--- /dev/null
+++ b/include/linux/mdio/mdio-mscc-miim.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
+/*
+ * Driver for the MDIO interface of Microsemi network switches.
+ *
+ * Author: Colin Foster <colin.foster@in-advantage.com>
+ * Copyright (C) 2021 Innovative Advantage
+ */
+#ifndef MDIO_MSCC_MIIM_H
+#define MDIO_MSCC_MIIM_H
+
+#include <linux/device.h>
+#include <linux/phy.h>
+#include <linux/regmap.h>
+
+int mscc_miim_setup(struct device *device, struct mii_bus **bus,
+		    const char *name, struct regmap *mii_regmap,
+		    int status_offset);
+
+#endif
diff --git a/include/linux/mei_cl_bus.h b/include/linux/mei_cl_bus.h
index c6786c12b207..df1fab44ea5c 100644
--- a/include/linux/mei_cl_bus.h
+++ b/include/linux/mei_cl_bus.h
@@ -117,4 +117,7 @@ int mei_cldev_enable(struct mei_cl_device *cldev);
 int mei_cldev_disable(struct mei_cl_device *cldev);
 bool mei_cldev_enabled(const struct mei_cl_device *cldev);
 
+void *mei_cldev_dma_map(struct mei_cl_device *cldev, u8 buffer_id, size_t size);
+int mei_cldev_dma_unmap(struct mei_cl_device *cldev);
+
 #endif /* _LINUX_MEI_CL_BUS_H */
diff --git a/include/linux/mem_encrypt.h b/include/linux/mem_encrypt.h
index 5c4a18a91f89..ae4526389261 100644
--- a/include/linux/mem_encrypt.h
+++ b/include/linux/mem_encrypt.h
@@ -16,10 +16,6 @@
 
 #include <asm/mem_encrypt.h>
 
-#else	/* !CONFIG_ARCH_HAS_MEM_ENCRYPT */
-
-static inline bool mem_encrypt_active(void) { return false; }
-
 #endif	/* CONFIG_ARCH_HAS_MEM_ENCRYPT */
 
 #ifdef CONFIG_AMD_MEM_ENCRYPT
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 34de69b3b8ba..50ad19662a32 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 #ifndef _LINUX_MEMBLOCK_H
 #define _LINUX_MEMBLOCK_H
-#ifdef __KERNEL__
 
 /*
  * Logical memory blocks.
@@ -28,17 +27,26 @@ extern unsigned long long max_possible_pfn;
 /**
  * enum memblock_flags - definition of memory region attributes
  * @MEMBLOCK_NONE: no special request
- * @MEMBLOCK_HOTPLUG: hotpluggable region
+ * @MEMBLOCK_HOTPLUG: memory region indicated in the firmware-provided memory
+ * map during early boot as hot(un)pluggable system RAM (e.g., memory range
+ * that might get hotunplugged later). With "movable_node" set on the kernel
+ * commandline, try keeping this memory region hotunpluggable. Does not apply
+ * to memblocks added ("hotplugged") after early boot.
  * @MEMBLOCK_MIRROR: mirrored region
  * @MEMBLOCK_NOMAP: don't add to kernel direct mapping and treat as
  * reserved in the memory map; refer to memblock_mark_nomap() description
  * for further details
+ * @MEMBLOCK_DRIVER_MANAGED: memory region that is always detected and added
+ * via a driver, and never indicated in the firmware-provided memory map as
+ * system RAM. This corresponds to IORESOURCE_SYSRAM_DRIVER_MANAGED in the
+ * kernel resource tree.
  */
 enum memblock_flags {
 	MEMBLOCK_NONE		= 0x0,	/* No special request */
 	MEMBLOCK_HOTPLUG	= 0x1,	/* hotpluggable region */
 	MEMBLOCK_MIRROR		= 0x2,	/* mirrored region */
 	MEMBLOCK_NOMAP		= 0x4,	/* don't add to kernel direct mapping */
+	MEMBLOCK_DRIVER_MANAGED = 0x8,	/* always detected via a driver */
 };
 
 /**
@@ -100,10 +108,11 @@ static inline void memblock_discard(void) {}
 #endif
 
 void memblock_allow_resize(void);
-int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid);
+int memblock_add_node(phys_addr_t base, phys_addr_t size, int nid,
+		      enum memblock_flags flags);
 int memblock_add(phys_addr_t base, phys_addr_t size);
 int memblock_remove(phys_addr_t base, phys_addr_t size);
-int memblock_free(phys_addr_t base, phys_addr_t size);
+int memblock_phys_free(phys_addr_t base, phys_addr_t size);
 int memblock_reserve(phys_addr_t base, phys_addr_t size);
 #ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
 int memblock_physmem_add(phys_addr_t base, phys_addr_t size);
@@ -118,7 +127,7 @@ int memblock_mark_nomap(phys_addr_t base, phys_addr_t size);
 int memblock_clear_nomap(phys_addr_t base, phys_addr_t size);
 
 void memblock_free_all(void);
-void memblock_free_ptr(void *ptr, size_t size);
+void memblock_free(void *ptr, size_t size);
 void reset_node_managed_pages(pg_data_t *pgdat);
 void reset_all_zones_managed_pages(void);
 
@@ -133,7 +142,7 @@ void __next_mem_range_rev(u64 *idx, int nid, enum memblock_flags flags,
 			  struct memblock_type *type_b, phys_addr_t *out_start,
 			  phys_addr_t *out_end, int *out_nid);
 
-void __memblock_free_late(phys_addr_t base, phys_addr_t size);
+void memblock_free_late(phys_addr_t base, phys_addr_t size);
 
 #ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP
 static inline void __next_physmem_range(u64 *idx, struct memblock_type *type,
@@ -208,7 +217,8 @@ static inline void __next_physmem_range(u64 *idx, struct memblock_type *type,
  */
 #define for_each_mem_range(i, p_start, p_end) \
 	__for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE,	\
-			     MEMBLOCK_HOTPLUG, p_start, p_end, NULL)
+			     MEMBLOCK_HOTPLUG | MEMBLOCK_DRIVER_MANAGED, \
+			     p_start, p_end, NULL)
 
 /**
  * for_each_mem_range_rev - reverse iterate through memblock areas from
@@ -219,7 +229,8 @@ static inline void __next_physmem_range(u64 *idx, struct memblock_type *type,
  */
 #define for_each_mem_range_rev(i, p_start, p_end)			\
 	__for_each_mem_range_rev(i, &memblock.memory, NULL, NUMA_NO_NODE, \
-				 MEMBLOCK_HOTPLUG, p_start, p_end, NULL)
+				 MEMBLOCK_HOTPLUG | MEMBLOCK_DRIVER_MANAGED,\
+				 p_start, p_end, NULL)
 
 /**
  * for_each_reserved_mem_range - iterate over all reserved memblock areas
@@ -249,6 +260,11 @@ static inline bool memblock_is_nomap(struct memblock_region *m)
 	return m->flags & MEMBLOCK_NOMAP;
 }
 
+static inline bool memblock_is_driver_managed(struct memblock_region *m)
+{
+	return m->flags & MEMBLOCK_DRIVER_MANAGED;
+}
+
 int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn,
 			    unsigned long  *end_pfn);
 void __next_mem_pfn_range(int *idx, int nid, unsigned long *out_start_pfn,
@@ -372,7 +388,7 @@ static inline int memblock_get_region_node(const struct memblock_region *r)
 /* Flags for memblock allocation APIs */
 #define MEMBLOCK_ALLOC_ANYWHERE	(~(phys_addr_t)0)
 #define MEMBLOCK_ALLOC_ACCESSIBLE	0
-#define MEMBLOCK_ALLOC_KASAN		1
+#define MEMBLOCK_ALLOC_NOLEAKTRACE	1
 
 /* We are using top down, so it is safe to use 0 here */
 #define MEMBLOCK_LOW_LIMIT 0
@@ -388,8 +404,8 @@ phys_addr_t memblock_alloc_range_nid(phys_addr_t size,
 				      phys_addr_t end, int nid, bool exact_nid);
 phys_addr_t memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t align, int nid);
 
-static inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
-					      phys_addr_t align)
+static __always_inline phys_addr_t memblock_phys_alloc(phys_addr_t size,
+						       phys_addr_t align)
 {
 	return memblock_phys_alloc_range(size, align, 0,
 					 MEMBLOCK_ALLOC_ACCESSIBLE);
@@ -441,23 +457,6 @@ static inline void *memblock_alloc_node(phys_addr_t size,
 				      MEMBLOCK_ALLOC_ACCESSIBLE, nid);
 }
 
-static inline void memblock_free_early(phys_addr_t base,
-					      phys_addr_t size)
-{
-	memblock_free(base, size);
-}
-
-static inline void memblock_free_early_nid(phys_addr_t base,
-						  phys_addr_t size, int nid)
-{
-	memblock_free(base, size);
-}
-
-static inline void memblock_free_late(phys_addr_t base, phys_addr_t size)
-{
-	__memblock_free_late(base, size);
-}
-
 /*
  * Set the allocation direction to bottom-up or top-down.
  */
@@ -605,6 +604,5 @@ static inline void early_memtest(phys_addr_t start, phys_addr_t end)
 }
 #endif
 
-#endif /* __KERNEL__ */
 
 #endif /* _LINUX_MEMBLOCK_H */
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 3096c9a0ee01..89b14729d59f 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -33,6 +33,8 @@ enum memcg_stat_item {
 	MEMCG_SWAP = NR_VM_NODE_STAT_ITEMS,
 	MEMCG_SOCK,
 	MEMCG_PERCPU_B,
+	MEMCG_VMALLOC,
+	MEMCG_KMEM,
 	MEMCG_NR_STAT,
 };
 
@@ -42,6 +44,7 @@ enum memcg_memory_event {
 	MEMCG_MAX,
 	MEMCG_OOM,
 	MEMCG_OOM_KILL,
+	MEMCG_OOM_GROUP_KILL,
 	MEMCG_SWAP_HIGH,
 	MEMCG_SWAP_MAX,
 	MEMCG_SWAP_FAIL,
@@ -180,12 +183,6 @@ struct mem_cgroup_thresholds {
 	struct mem_cgroup_threshold_ary *spare;
 };
 
-enum memcg_kmem_state {
-	KMEM_NONE,
-	KMEM_ALLOCATED,
-	KMEM_ONLINE,
-};
-
 #if defined(CONFIG_SMP)
 struct memcg_padding {
 	char x[0];
@@ -223,7 +220,7 @@ struct obj_cgroup {
 	struct mem_cgroup *memcg;
 	atomic_t nr_charged_bytes;
 	union {
-		struct list_head list;
+		struct list_head list; /* protected by objcg_lock */
 		struct rcu_head rcu;
 	};
 };
@@ -318,9 +315,9 @@ struct mem_cgroup {
 
 #ifdef CONFIG_MEMCG_KMEM
 	int kmemcg_id;
-	enum memcg_kmem_state kmem_state;
 	struct obj_cgroup __rcu *objcg;
-	struct list_head objcg_list; /* list of inherited objcgs */
+	/* list of inherited objcgs, protected by objcg_lock */
+	struct list_head objcg_list;
 #endif
 
 	MEMCG_PADDING(_pad2_);
@@ -369,7 +366,7 @@ enum page_memcg_data_flags {
 
 #define MEMCG_DATA_FLAGS_MASK (__NR_MEMCG_DATA_FLAGS - 1)
 
-static inline bool PageMemcgKmem(struct page *page);
+static inline bool folio_memcg_kmem(struct folio *folio);
 
 /*
  * After the initialization objcg->memcg is always pointing at
@@ -384,89 +381,95 @@ static inline struct mem_cgroup *obj_cgroup_memcg(struct obj_cgroup *objcg)
 }
 
 /*
- * __page_memcg - get the memory cgroup associated with a non-kmem page
- * @page: a pointer to the page struct
+ * __folio_memcg - Get the memory cgroup associated with a non-kmem folio
+ * @folio: Pointer to the folio.
  *
- * Returns a pointer to the memory cgroup associated with the page,
- * or NULL. This function assumes that the page is known to have a
+ * Returns a pointer to the memory cgroup associated with the folio,
+ * or NULL. This function assumes that the folio is known to have a
  * proper memory cgroup pointer. It's not safe to call this function
- * against some type of pages, e.g. slab pages or ex-slab pages or
- * kmem pages.
+ * against some type of folios, e.g. slab folios or ex-slab folios or
+ * kmem folios.
  */
-static inline struct mem_cgroup *__page_memcg(struct page *page)
+static inline struct mem_cgroup *__folio_memcg(struct folio *folio)
 {
-	unsigned long memcg_data = page->memcg_data;
+	unsigned long memcg_data = folio->memcg_data;
 
-	VM_BUG_ON_PAGE(PageSlab(page), page);
-	VM_BUG_ON_PAGE(memcg_data & MEMCG_DATA_OBJCGS, page);
-	VM_BUG_ON_PAGE(memcg_data & MEMCG_DATA_KMEM, page);
+	VM_BUG_ON_FOLIO(folio_test_slab(folio), folio);
+	VM_BUG_ON_FOLIO(memcg_data & MEMCG_DATA_OBJCGS, folio);
+	VM_BUG_ON_FOLIO(memcg_data & MEMCG_DATA_KMEM, folio);
 
 	return (struct mem_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
 }
 
 /*
- * __page_objcg - get the object cgroup associated with a kmem page
- * @page: a pointer to the page struct
+ * __folio_objcg - get the object cgroup associated with a kmem folio.
+ * @folio: Pointer to the folio.
  *
- * Returns a pointer to the object cgroup associated with the page,
- * or NULL. This function assumes that the page is known to have a
+ * Returns a pointer to the object cgroup associated with the folio,
+ * or NULL. This function assumes that the folio is known to have a
  * proper object cgroup pointer. It's not safe to call this function
- * against some type of pages, e.g. slab pages or ex-slab pages or
- * LRU pages.
+ * against some type of folios, e.g. slab folios or ex-slab folios or
+ * LRU folios.
  */
-static inline struct obj_cgroup *__page_objcg(struct page *page)
+static inline struct obj_cgroup *__folio_objcg(struct folio *folio)
 {
-	unsigned long memcg_data = page->memcg_data;
+	unsigned long memcg_data = folio->memcg_data;
 
-	VM_BUG_ON_PAGE(PageSlab(page), page);
-	VM_BUG_ON_PAGE(memcg_data & MEMCG_DATA_OBJCGS, page);
-	VM_BUG_ON_PAGE(!(memcg_data & MEMCG_DATA_KMEM), page);
+	VM_BUG_ON_FOLIO(folio_test_slab(folio), folio);
+	VM_BUG_ON_FOLIO(memcg_data & MEMCG_DATA_OBJCGS, folio);
+	VM_BUG_ON_FOLIO(!(memcg_data & MEMCG_DATA_KMEM), folio);
 
 	return (struct obj_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
 }
 
 /*
- * page_memcg - get the memory cgroup associated with a page
- * @page: a pointer to the page struct
+ * folio_memcg - Get the memory cgroup associated with a folio.
+ * @folio: Pointer to the folio.
  *
- * Returns a pointer to the memory cgroup associated with the page,
- * or NULL. This function assumes that the page is known to have a
+ * Returns a pointer to the memory cgroup associated with the folio,
+ * or NULL. This function assumes that the folio is known to have a
  * proper memory cgroup pointer. It's not safe to call this function
- * against some type of pages, e.g. slab pages or ex-slab pages.
+ * against some type of folios, e.g. slab folios or ex-slab folios.
  *
- * For a non-kmem page any of the following ensures page and memcg binding
+ * For a non-kmem folio any of the following ensures folio and memcg binding
  * stability:
  *
- * - the page lock
+ * - the folio lock
  * - LRU isolation
  * - lock_page_memcg()
  * - exclusive reference
  *
- * For a kmem page a caller should hold an rcu read lock to protect memcg
- * associated with a kmem page from being released.
+ * For a kmem folio a caller should hold an rcu read lock to protect memcg
+ * associated with a kmem folio from being released.
  */
+static inline struct mem_cgroup *folio_memcg(struct folio *folio)
+{
+	if (folio_memcg_kmem(folio))
+		return obj_cgroup_memcg(__folio_objcg(folio));
+	return __folio_memcg(folio);
+}
+
 static inline struct mem_cgroup *page_memcg(struct page *page)
 {
-	if (PageMemcgKmem(page))
-		return obj_cgroup_memcg(__page_objcg(page));
-	else
-		return __page_memcg(page);
+	return folio_memcg(page_folio(page));
 }
 
-/*
- * page_memcg_rcu - locklessly get the memory cgroup associated with a page
- * @page: a pointer to the page struct
+/**
+ * folio_memcg_rcu - Locklessly get the memory cgroup associated with a folio.
+ * @folio: Pointer to the folio.
  *
- * Returns a pointer to the memory cgroup associated with the page,
- * or NULL. This function assumes that the page is known to have a
+ * This function assumes that the folio is known to have a
  * proper memory cgroup pointer. It's not safe to call this function
- * against some type of pages, e.g. slab pages or ex-slab pages.
+ * against some type of folios, e.g. slab folios or ex-slab folios.
+ *
+ * Return: A pointer to the memory cgroup associated with the folio,
+ * or NULL.
  */
-static inline struct mem_cgroup *page_memcg_rcu(struct page *page)
+static inline struct mem_cgroup *folio_memcg_rcu(struct folio *folio)
 {
-	unsigned long memcg_data = READ_ONCE(page->memcg_data);
+	unsigned long memcg_data = READ_ONCE(folio->memcg_data);
 
-	VM_BUG_ON_PAGE(PageSlab(page), page);
+	VM_BUG_ON_FOLIO(folio_test_slab(folio), folio);
 	WARN_ON_ONCE(!rcu_read_lock_held());
 
 	if (memcg_data & MEMCG_DATA_KMEM) {
@@ -521,77 +524,49 @@ static inline struct mem_cgroup *page_memcg_check(struct page *page)
 	return (struct mem_cgroup *)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
 }
 
-#ifdef CONFIG_MEMCG_KMEM
-/*
- * PageMemcgKmem - check if the page has MemcgKmem flag set
- * @page: a pointer to the page struct
- *
- * Checks if the page has MemcgKmem flag set. The caller must ensure that
- * the page has an associated memory cgroup. It's not safe to call this function
- * against some types of pages, e.g. slab pages.
- */
-static inline bool PageMemcgKmem(struct page *page)
+static inline struct mem_cgroup *get_mem_cgroup_from_objcg(struct obj_cgroup *objcg)
 {
-	VM_BUG_ON_PAGE(page->memcg_data & MEMCG_DATA_OBJCGS, page);
-	return page->memcg_data & MEMCG_DATA_KMEM;
-}
-
-/*
- * page_objcgs - get the object cgroups vector associated with a page
- * @page: a pointer to the page struct
- *
- * Returns a pointer to the object cgroups vector associated with the page,
- * or NULL. This function assumes that the page is known to have an
- * associated object cgroups vector. It's not safe to call this function
- * against pages, which might have an associated memory cgroup: e.g.
- * kernel stack pages.
- */
-static inline struct obj_cgroup **page_objcgs(struct page *page)
-{
-	unsigned long memcg_data = READ_ONCE(page->memcg_data);
+	struct mem_cgroup *memcg;
 
-	VM_BUG_ON_PAGE(memcg_data && !(memcg_data & MEMCG_DATA_OBJCGS), page);
-	VM_BUG_ON_PAGE(memcg_data & MEMCG_DATA_KMEM, page);
+	rcu_read_lock();
+retry:
+	memcg = obj_cgroup_memcg(objcg);
+	if (unlikely(!css_tryget(&memcg->css)))
+		goto retry;
+	rcu_read_unlock();
 
-	return (struct obj_cgroup **)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
+	return memcg;
 }
 
+#ifdef CONFIG_MEMCG_KMEM
 /*
- * page_objcgs_check - get the object cgroups vector associated with a page
- * @page: a pointer to the page struct
+ * folio_memcg_kmem - Check if the folio has the memcg_kmem flag set.
+ * @folio: Pointer to the folio.
  *
- * Returns a pointer to the object cgroups vector associated with the page,
- * or NULL. This function is safe to use if the page can be directly associated
- * with a memory cgroup.
+ * Checks if the folio has MemcgKmem flag set. The caller must ensure
+ * that the folio has an associated memory cgroup. It's not safe to call
+ * this function against some types of folios, e.g. slab folios.
  */
-static inline struct obj_cgroup **page_objcgs_check(struct page *page)
+static inline bool folio_memcg_kmem(struct folio *folio)
 {
-	unsigned long memcg_data = READ_ONCE(page->memcg_data);
-
-	if (!memcg_data || !(memcg_data & MEMCG_DATA_OBJCGS))
-		return NULL;
-
-	VM_BUG_ON_PAGE(memcg_data & MEMCG_DATA_KMEM, page);
-
-	return (struct obj_cgroup **)(memcg_data & ~MEMCG_DATA_FLAGS_MASK);
+	VM_BUG_ON_PGFLAGS(PageTail(&folio->page), &folio->page);
+	VM_BUG_ON_FOLIO(folio->memcg_data & MEMCG_DATA_OBJCGS, folio);
+	return folio->memcg_data & MEMCG_DATA_KMEM;
 }
 
+
 #else
-static inline bool PageMemcgKmem(struct page *page)
+static inline bool folio_memcg_kmem(struct folio *folio)
 {
 	return false;
 }
 
-static inline struct obj_cgroup **page_objcgs(struct page *page)
-{
-	return NULL;
-}
+#endif
 
-static inline struct obj_cgroup **page_objcgs_check(struct page *page)
+static inline bool PageMemcgKmem(struct page *page)
 {
-	return NULL;
+	return folio_memcg_kmem(page_folio(page));
 }
-#endif
 
 static inline bool mem_cgroup_is_root(struct mem_cgroup *memcg)
 {
@@ -684,26 +659,47 @@ static inline bool mem_cgroup_below_min(struct mem_cgroup *memcg)
 		page_counter_read(&memcg->memory);
 }
 
-int __mem_cgroup_charge(struct page *page, struct mm_struct *mm,
-			gfp_t gfp_mask);
-static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
-				    gfp_t gfp_mask)
+int __mem_cgroup_charge(struct folio *folio, struct mm_struct *mm, gfp_t gfp);
+
+/**
+ * mem_cgroup_charge - Charge a newly allocated folio to a cgroup.
+ * @folio: Folio to charge.
+ * @mm: mm context of the allocating task.
+ * @gfp: Reclaim mode.
+ *
+ * Try to charge @folio to the memcg that @mm belongs to, reclaiming
+ * pages according to @gfp if necessary.  If @mm is NULL, try to
+ * charge to the active memcg.
+ *
+ * Do not use this for folios allocated for swapin.
+ *
+ * Return: 0 on success. Otherwise, an error code is returned.
+ */
+static inline int mem_cgroup_charge(struct folio *folio, struct mm_struct *mm,
+				    gfp_t gfp)
 {
 	if (mem_cgroup_disabled())
 		return 0;
-	return __mem_cgroup_charge(page, mm, gfp_mask);
+	return __mem_cgroup_charge(folio, mm, gfp);
 }
 
 int mem_cgroup_swapin_charge_page(struct page *page, struct mm_struct *mm,
 				  gfp_t gfp, swp_entry_t entry);
 void mem_cgroup_swapin_uncharge_swap(swp_entry_t entry);
 
-void __mem_cgroup_uncharge(struct page *page);
-static inline void mem_cgroup_uncharge(struct page *page)
+void __mem_cgroup_uncharge(struct folio *folio);
+
+/**
+ * mem_cgroup_uncharge - Uncharge a folio.
+ * @folio: Folio to uncharge.
+ *
+ * Uncharge a folio previously charged with mem_cgroup_charge().
+ */
+static inline void mem_cgroup_uncharge(struct folio *folio)
 {
 	if (mem_cgroup_disabled())
 		return;
-	__mem_cgroup_uncharge(page);
+	__mem_cgroup_uncharge(folio);
 }
 
 void __mem_cgroup_uncharge_list(struct list_head *page_list);
@@ -714,7 +710,7 @@ static inline void mem_cgroup_uncharge_list(struct list_head *page_list)
 	__mem_cgroup_uncharge_list(page_list);
 }
 
-void mem_cgroup_migrate(struct page *oldpage, struct page *newpage);
+void mem_cgroup_migrate(struct folio *old, struct folio *new);
 
 /**
  * mem_cgroup_lruvec - get the lru list vector for a memcg & node
@@ -753,33 +749,33 @@ out:
 }
 
 /**
- * mem_cgroup_page_lruvec - return lruvec for isolating/putting an LRU page
- * @page: the page
+ * folio_lruvec - return lruvec for isolating/putting an LRU folio
+ * @folio: Pointer to the folio.
  *
- * This function relies on page->mem_cgroup being stable.
+ * This function relies on folio->mem_cgroup being stable.
  */
-static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page)
+static inline struct lruvec *folio_lruvec(struct folio *folio)
 {
-	pg_data_t *pgdat = page_pgdat(page);
-	struct mem_cgroup *memcg = page_memcg(page);
+	struct mem_cgroup *memcg = folio_memcg(folio);
 
-	VM_WARN_ON_ONCE_PAGE(!memcg && !mem_cgroup_disabled(), page);
-	return mem_cgroup_lruvec(memcg, pgdat);
+	VM_WARN_ON_ONCE_FOLIO(!memcg && !mem_cgroup_disabled(), folio);
+	return mem_cgroup_lruvec(memcg, folio_pgdat(folio));
 }
 
 struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
 
 struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm);
 
-struct lruvec *lock_page_lruvec(struct page *page);
-struct lruvec *lock_page_lruvec_irq(struct page *page);
-struct lruvec *lock_page_lruvec_irqsave(struct page *page,
+struct lruvec *folio_lruvec_lock(struct folio *folio);
+struct lruvec *folio_lruvec_lock_irq(struct folio *folio);
+struct lruvec *folio_lruvec_lock_irqsave(struct folio *folio,
 						unsigned long *flags);
 
 #ifdef CONFIG_DEBUG_VM
-void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page);
+void lruvec_memcg_debug(struct lruvec *lruvec, struct folio *folio);
 #else
-static inline void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page)
+static inline
+void lruvec_memcg_debug(struct lruvec *lruvec, struct folio *folio)
 {
 }
 #endif
@@ -860,9 +856,7 @@ static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec)
  */
 static inline struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg)
 {
-	if (!memcg->memory.parent)
-		return NULL;
-	return mem_cgroup_from_counter(memcg->memory.parent, memory);
+	return mem_cgroup_from_css(memcg->css.parent);
 }
 
 static inline bool mem_cgroup_is_descendant(struct mem_cgroup *memcg,
@@ -947,6 +941,8 @@ void mem_cgroup_print_oom_group(struct mem_cgroup *memcg);
 extern bool cgroup_memory_noswap;
 #endif
 
+void folio_memcg_lock(struct folio *folio);
+void folio_memcg_unlock(struct folio *folio);
 void lock_page_memcg(struct page *page);
 void unlock_page_memcg(struct page *page);
 
@@ -963,6 +959,21 @@ static inline void mod_memcg_state(struct mem_cgroup *memcg,
 	local_irq_restore(flags);
 }
 
+static inline void mod_memcg_page_state(struct page *page,
+					int idx, int val)
+{
+	struct mem_cgroup *memcg;
+
+	if (mem_cgroup_disabled())
+		return;
+
+	rcu_read_lock();
+	memcg = page_memcg(page);
+	if (memcg)
+		mod_memcg_state(memcg, idx, val);
+	rcu_read_unlock();
+}
+
 static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx)
 {
 	return READ_ONCE(memcg->vmstats.state[idx]);
@@ -1001,6 +1012,7 @@ static inline unsigned long lruvec_page_state_local(struct lruvec *lruvec,
 }
 
 void mem_cgroup_flush_stats(void);
+void mem_cgroup_flush_stats_delayed(void);
 
 void __mod_memcg_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx,
 			      int val);
@@ -1115,12 +1127,17 @@ unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order,
 #define MEM_CGROUP_ID_SHIFT	0
 #define MEM_CGROUP_ID_MAX	0
 
+static inline struct mem_cgroup *folio_memcg(struct folio *folio)
+{
+	return NULL;
+}
+
 static inline struct mem_cgroup *page_memcg(struct page *page)
 {
 	return NULL;
 }
 
-static inline struct mem_cgroup *page_memcg_rcu(struct page *page)
+static inline struct mem_cgroup *folio_memcg_rcu(struct folio *folio)
 {
 	WARN_ON_ONCE(!rcu_read_lock_held());
 	return NULL;
@@ -1131,6 +1148,11 @@ static inline struct mem_cgroup *page_memcg_check(struct page *page)
 	return NULL;
 }
 
+static inline bool folio_memcg_kmem(struct folio *folio)
+{
+	return false;
+}
+
 static inline bool PageMemcgKmem(struct page *page)
 {
 	return false;
@@ -1179,8 +1201,8 @@ static inline bool mem_cgroup_below_min(struct mem_cgroup *memcg)
 	return false;
 }
 
-static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
-				    gfp_t gfp_mask)
+static inline int mem_cgroup_charge(struct folio *folio,
+		struct mm_struct *mm, gfp_t gfp)
 {
 	return 0;
 }
@@ -1195,7 +1217,7 @@ static inline void mem_cgroup_swapin_uncharge_swap(swp_entry_t entry)
 {
 }
 
-static inline void mem_cgroup_uncharge(struct page *page)
+static inline void mem_cgroup_uncharge(struct folio *folio)
 {
 }
 
@@ -1203,7 +1225,7 @@ static inline void mem_cgroup_uncharge_list(struct list_head *page_list)
 {
 }
 
-static inline void mem_cgroup_migrate(struct page *old, struct page *new)
+static inline void mem_cgroup_migrate(struct folio *old, struct folio *new)
 {
 }
 
@@ -1213,14 +1235,14 @@ static inline struct lruvec *mem_cgroup_lruvec(struct mem_cgroup *memcg,
 	return &pgdat->__lruvec;
 }
 
-static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page)
+static inline struct lruvec *folio_lruvec(struct folio *folio)
 {
-	pg_data_t *pgdat = page_pgdat(page);
-
+	struct pglist_data *pgdat = folio_pgdat(folio);
 	return &pgdat->__lruvec;
 }
 
-static inline void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page)
+static inline
+void lruvec_memcg_debug(struct lruvec *lruvec, struct folio *folio)
 {
 }
 
@@ -1250,26 +1272,26 @@ static inline void mem_cgroup_put(struct mem_cgroup *memcg)
 {
 }
 
-static inline struct lruvec *lock_page_lruvec(struct page *page)
+static inline struct lruvec *folio_lruvec_lock(struct folio *folio)
 {
-	struct pglist_data *pgdat = page_pgdat(page);
+	struct pglist_data *pgdat = folio_pgdat(folio);
 
 	spin_lock(&pgdat->__lruvec.lru_lock);
 	return &pgdat->__lruvec;
 }
 
-static inline struct lruvec *lock_page_lruvec_irq(struct page *page)
+static inline struct lruvec *folio_lruvec_lock_irq(struct folio *folio)
 {
-	struct pglist_data *pgdat = page_pgdat(page);
+	struct pglist_data *pgdat = folio_pgdat(folio);
 
 	spin_lock_irq(&pgdat->__lruvec.lru_lock);
 	return &pgdat->__lruvec;
 }
 
-static inline struct lruvec *lock_page_lruvec_irqsave(struct page *page,
+static inline struct lruvec *folio_lruvec_lock_irqsave(struct folio *folio,
 		unsigned long *flagsp)
 {
-	struct pglist_data *pgdat = page_pgdat(page);
+	struct pglist_data *pgdat = folio_pgdat(folio);
 
 	spin_lock_irqsave(&pgdat->__lruvec.lru_lock, *flagsp);
 	return &pgdat->__lruvec;
@@ -1356,6 +1378,14 @@ static inline void unlock_page_memcg(struct page *page)
 {
 }
 
+static inline void folio_memcg_lock(struct folio *folio)
+{
+}
+
+static inline void folio_memcg_unlock(struct folio *folio)
+{
+}
+
 static inline void mem_cgroup_handle_over_high(void)
 {
 }
@@ -1400,6 +1430,11 @@ static inline void mod_memcg_state(struct mem_cgroup *memcg,
 {
 }
 
+static inline void mod_memcg_page_state(struct page *page,
+					int idx, int val)
+{
+}
+
 static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx)
 {
 	return 0;
@@ -1421,6 +1456,10 @@ static inline void mem_cgroup_flush_stats(void)
 {
 }
 
+static inline void mem_cgroup_flush_stats_delayed(void)
+{
+}
+
 static inline void __mod_memcg_lruvec_state(struct lruvec *lruvec,
 					    enum node_stat_item idx, int val)
 {
@@ -1517,38 +1556,39 @@ static inline void unlock_page_lruvec_irqrestore(struct lruvec *lruvec,
 }
 
 /* Test requires a stable page->memcg binding, see page_memcg() */
-static inline bool page_matches_lruvec(struct page *page, struct lruvec *lruvec)
+static inline bool folio_matches_lruvec(struct folio *folio,
+		struct lruvec *lruvec)
 {
-	return lruvec_pgdat(lruvec) == page_pgdat(page) &&
-	       lruvec_memcg(lruvec) == page_memcg(page);
+	return lruvec_pgdat(lruvec) == folio_pgdat(folio) &&
+	       lruvec_memcg(lruvec) == folio_memcg(folio);
 }
 
 /* Don't lock again iff page's lruvec locked */
-static inline struct lruvec *relock_page_lruvec_irq(struct page *page,
+static inline struct lruvec *folio_lruvec_relock_irq(struct folio *folio,
 		struct lruvec *locked_lruvec)
 {
 	if (locked_lruvec) {
-		if (page_matches_lruvec(page, locked_lruvec))
+		if (folio_matches_lruvec(folio, locked_lruvec))
 			return locked_lruvec;
 
 		unlock_page_lruvec_irq(locked_lruvec);
 	}
 
-	return lock_page_lruvec_irq(page);
+	return folio_lruvec_lock_irq(folio);
 }
 
 /* Don't lock again iff page's lruvec locked */
-static inline struct lruvec *relock_page_lruvec_irqsave(struct page *page,
+static inline struct lruvec *folio_lruvec_relock_irqsave(struct folio *folio,
 		struct lruvec *locked_lruvec, unsigned long *flags)
 {
 	if (locked_lruvec) {
-		if (page_matches_lruvec(page, locked_lruvec))
+		if (folio_matches_lruvec(folio, locked_lruvec))
 			return locked_lruvec;
 
 		unlock_page_lruvec_irqrestore(locked_lruvec, *flags);
 	}
 
-	return lock_page_lruvec_irqsave(page, flags);
+	return folio_lruvec_lock_irqsave(folio, flags);
 }
 
 #ifdef CONFIG_CGROUP_WRITEBACK
@@ -1558,17 +1598,17 @@ void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages,
 			 unsigned long *pheadroom, unsigned long *pdirty,
 			 unsigned long *pwriteback);
 
-void mem_cgroup_track_foreign_dirty_slowpath(struct page *page,
+void mem_cgroup_track_foreign_dirty_slowpath(struct folio *folio,
 					     struct bdi_writeback *wb);
 
-static inline void mem_cgroup_track_foreign_dirty(struct page *page,
+static inline void mem_cgroup_track_foreign_dirty(struct folio *folio,
 						  struct bdi_writeback *wb)
 {
 	if (mem_cgroup_disabled())
 		return;
 
-	if (unlikely(&page_memcg(page)->css != wb->memcg_css))
-		mem_cgroup_track_foreign_dirty_slowpath(page, wb);
+	if (unlikely(&folio_memcg(folio)->css != wb->memcg_css))
+		mem_cgroup_track_foreign_dirty_slowpath(folio, wb);
 }
 
 void mem_cgroup_flush_foreign(struct bdi_writeback *wb);
@@ -1588,7 +1628,7 @@ static inline void mem_cgroup_wb_stats(struct bdi_writeback *wb,
 {
 }
 
-static inline void mem_cgroup_track_foreign_dirty(struct page *page,
+static inline void mem_cgroup_track_foreign_dirty(struct folio *folio,
 						  struct bdi_writeback *wb)
 {
 }
@@ -1613,7 +1653,7 @@ static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg)
 	if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && memcg->tcpmem_pressure)
 		return true;
 	do {
-		if (time_before(jiffies, memcg->socket_pressure))
+		if (time_before(jiffies, READ_ONCE(memcg->socket_pressure)))
 			return true;
 	} while ((memcg = parent_mem_cgroup(memcg)));
 	return false;
@@ -1650,18 +1690,6 @@ void obj_cgroup_uncharge(struct obj_cgroup *objcg, size_t size);
 
 extern struct static_key_false memcg_kmem_enabled_key;
 
-extern int memcg_nr_cache_ids;
-void memcg_get_cache_ids(void);
-void memcg_put_cache_ids(void);
-
-/*
- * Helper macro to loop through all memcg-specific caches. Callers must still
- * check if the cache is valid (it is either valid or NULL).
- * the slab_mutex must be held when looping through those caches
- */
-#define for_each_memcg_cache_index(_idx)	\
-	for ((_idx) = 0; (_idx) < memcg_nr_cache_ids; (_idx)++)
-
 static inline bool memcg_kmem_enabled(void)
 {
 	return static_branch_likely(&memcg_kmem_enabled_key);
@@ -1685,7 +1713,7 @@ static inline void memcg_kmem_uncharge_page(struct page *page, int order)
  * A helper for accessing memcg's kmem_id, used for getting
  * corresponding LRU lists.
  */
-static inline int memcg_cache_id(struct mem_cgroup *memcg)
+static inline int memcg_kmem_id(struct mem_cgroup *memcg)
 {
 	return memcg ? memcg->kmemcg_id : -1;
 }
@@ -1718,27 +1746,16 @@ static inline void __memcg_kmem_uncharge_page(struct page *page, int order)
 {
 }
 
-#define for_each_memcg_cache_index(_idx)	\
-	for (; NULL; )
-
 static inline bool memcg_kmem_enabled(void)
 {
 	return false;
 }
 
-static inline int memcg_cache_id(struct mem_cgroup *memcg)
+static inline int memcg_kmem_id(struct mem_cgroup *memcg)
 {
 	return -1;
 }
 
-static inline void memcg_get_cache_ids(void)
-{
-}
-
-static inline void memcg_put_cache_ids(void)
-{
-}
-
 static inline struct mem_cgroup *mem_cgroup_from_obj(void *p)
 {
        return NULL;
diff --git a/include/linux/memory.h b/include/linux/memory.h
index 182c606adb06..aa619464a1df 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -70,6 +70,13 @@ struct memory_block {
 	unsigned long state;		/* serialized by the dev->lock */
 	int online_type;		/* for passing data to online routine */
 	int nid;			/* NID for this memory block */
+	/*
+	 * The single zone of this memory block if all PFNs of this memory block
+	 * that are System RAM (not a memory hole, not ZONE_DEVICE ranges) are
+	 * managed by a single zone. NULL if multiple zones (including nodes)
+	 * apply.
+	 */
+	struct zone *zone;
 	struct device dev;
 	/*
 	 * Number of vmemmap pages. These pages
@@ -96,7 +103,6 @@ struct memory_notify {
 	unsigned long start_pfn;
 	unsigned long nr_pages;
 	int status_change_nid_normal;
-	int status_change_nid_high;
 	int status_change_nid;
 };
 
@@ -110,7 +116,7 @@ struct mem_section;
 #define SLAB_CALLBACK_PRI       1
 #define IPC_CALLBACK_PRI        10
 
-#ifndef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifndef CONFIG_MEMORY_HOTPLUG
 static inline void memory_dev_init(void)
 {
 	return;
@@ -126,7 +132,14 @@ static inline int memory_notify(unsigned long val, void *v)
 {
 	return 0;
 }
-#else
+static inline int hotplug_memory_notifier(notifier_fn_t fn, int pri)
+{
+	return 0;
+}
+/* These aren't inline functions due to a GCC bug. */
+#define register_hotmemory_notifier(nb)    ({ (void)(nb); 0; })
+#define unregister_hotmemory_notifier(nb)  ({ (void)(nb); })
+#else /* CONFIG_MEMORY_HOTPLUG */
 extern int register_memory_notifier(struct notifier_block *nb);
 extern void unregister_memory_notifier(struct notifier_block *nb);
 int create_memory_block_devices(unsigned long start, unsigned long size,
@@ -140,7 +153,6 @@ typedef int (*walk_memory_blocks_func_t)(struct memory_block *, void *);
 extern int walk_memory_blocks(unsigned long start, unsigned long size,
 			      void *arg, walk_memory_blocks_func_t func);
 extern int for_each_memory_block(void *arg, walk_memory_blocks_func_t func);
-#define CONFIG_MEM_BLOCK_SIZE	(PAGES_PER_SECTION<<PAGE_SHIFT)
 
 extern int memory_group_register_static(int nid, unsigned long max_pages);
 extern int memory_group_register_dynamic(int nid, unsigned long unit_pages);
@@ -149,9 +161,6 @@ struct memory_group *memory_group_find_by_id(int mgid);
 typedef int (*walk_memory_groups_func_t)(struct memory_group *, void *);
 int walk_dynamic_memory_groups(int nid, walk_memory_groups_func_t func,
 			       struct memory_group *excluded, void *arg);
-#endif /* CONFIG_MEMORY_HOTPLUG_SPARSE */
-
-#ifdef CONFIG_MEMORY_HOTPLUG
 #define hotplug_memory_notifier(fn, pri) ({		\
 	static __meminitdata struct notifier_block fn##_mem_nb =\
 		{ .notifier_call = fn, .priority = pri };\
@@ -159,15 +168,12 @@ int walk_dynamic_memory_groups(int nid, walk_memory_groups_func_t func,
 })
 #define register_hotmemory_notifier(nb)		register_memory_notifier(nb)
 #define unregister_hotmemory_notifier(nb) 	unregister_memory_notifier(nb)
-#else
-static inline int hotplug_memory_notifier(notifier_fn_t fn, int pri)
-{
-	return 0;
-}
-/* These aren't inline functions due to a GCC bug. */
-#define register_hotmemory_notifier(nb)    ({ (void)(nb); 0; })
-#define unregister_hotmemory_notifier(nb)  ({ (void)(nb); })
-#endif
+
+#ifdef CONFIG_NUMA
+void memory_block_add_nid(struct memory_block *mem, int nid,
+			  enum meminit_context context);
+#endif /* CONFIG_NUMA */
+#endif	/* CONFIG_MEMORY_HOTPLUG */
 
 /*
  * Kernel text modification mutex, used for code patching. Users of this lock
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index e5a867c950b2..1ce6f8044f1e 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -16,6 +16,62 @@ struct memory_group;
 struct resource;
 struct vmem_altmap;
 
+#ifdef CONFIG_HAVE_ARCH_NODEDATA_EXTENSION
+/*
+ * For supporting node-hotadd, we have to allocate a new pgdat.
+ *
+ * If an arch has generic style NODE_DATA(),
+ * node_data[nid] = kzalloc() works well. But it depends on the architecture.
+ *
+ * In general, generic_alloc_nodedata() is used.
+ *
+ */
+extern pg_data_t *arch_alloc_nodedata(int nid);
+extern void arch_refresh_nodedata(int nid, pg_data_t *pgdat);
+
+#else /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
+
+#define arch_alloc_nodedata(nid)	generic_alloc_nodedata(nid)
+
+#ifdef CONFIG_NUMA
+/*
+ * XXX: node aware allocation can't work well to get new node's memory at this time.
+ *	Because, pgdat for the new node is not allocated/initialized yet itself.
+ *	To use new node's memory, more consideration will be necessary.
+ */
+#define generic_alloc_nodedata(nid)				\
+({								\
+	memblock_alloc(sizeof(*pgdat), SMP_CACHE_BYTES);	\
+})
+/*
+ * This definition is just for error path in node hotadd.
+ * For node hotremove, we have to replace this.
+ */
+#define generic_free_nodedata(pgdat)	kfree(pgdat)
+
+extern pg_data_t *node_data[];
+static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
+{
+	node_data[nid] = pgdat;
+}
+
+#else /* !CONFIG_NUMA */
+
+/* never called */
+static inline pg_data_t *generic_alloc_nodedata(int nid)
+{
+	BUG();
+	return NULL;
+}
+static inline void generic_free_nodedata(pg_data_t *pgdat)
+{
+}
+static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
+{
+}
+#endif /* CONFIG_NUMA */
+#endif /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
+
 #ifdef CONFIG_MEMORY_HOTPLUG
 struct page *pfn_to_online_page(unsigned long pfn);
 
@@ -98,9 +154,6 @@ static inline void zone_seqlock_init(struct zone *zone)
 {
 	seqlock_init(&zone->span_seqlock);
 }
-extern int zone_grow_free_lists(struct zone *zone, unsigned long new_nr_pages);
-extern int zone_grow_waitqueues(struct zone *zone, unsigned long nr_pages);
-extern int add_one_highpage(struct page *page, int pfn, int bad_ppro);
 extern void adjust_present_page_count(struct page *page,
 				      struct memory_group *group,
 				      long nr_pages);
@@ -110,8 +163,6 @@ extern int mhp_init_memmap_on_memory(unsigned long pfn, unsigned long nr_pages,
 extern void mhp_deinit_memmap_on_memory(unsigned long pfn, unsigned long nr_pages);
 extern int online_pages(unsigned long pfn, unsigned long nr_pages,
 			struct zone *zone, struct memory_group *group);
-extern struct zone *test_pages_in_a_zone(unsigned long start_pfn,
-					 unsigned long end_pfn);
 extern void __offline_isolated_pages(unsigned long start_pfn,
 				     unsigned long end_pfn);
 
@@ -157,66 +208,6 @@ int add_pages(int nid, unsigned long start_pfn, unsigned long nr_pages,
 	      struct mhp_params *params);
 #endif /* ARCH_HAS_ADD_PAGES */
 
-#ifdef CONFIG_HAVE_ARCH_NODEDATA_EXTENSION
-/*
- * For supporting node-hotadd, we have to allocate a new pgdat.
- *
- * If an arch has generic style NODE_DATA(),
- * node_data[nid] = kzalloc() works well. But it depends on the architecture.
- *
- * In general, generic_alloc_nodedata() is used.
- * Now, arch_free_nodedata() is just defined for error path of node_hot_add.
- *
- */
-extern pg_data_t *arch_alloc_nodedata(int nid);
-extern void arch_free_nodedata(pg_data_t *pgdat);
-extern void arch_refresh_nodedata(int nid, pg_data_t *pgdat);
-
-#else /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
-
-#define arch_alloc_nodedata(nid)	generic_alloc_nodedata(nid)
-#define arch_free_nodedata(pgdat)	generic_free_nodedata(pgdat)
-
-#ifdef CONFIG_NUMA
-/*
- * If ARCH_HAS_NODEDATA_EXTENSION=n, this func is used to allocate pgdat.
- * XXX: kmalloc_node() can't work well to get new node's memory at this time.
- *	Because, pgdat for the new node is not allocated/initialized yet itself.
- *	To use new node's memory, more consideration will be necessary.
- */
-#define generic_alloc_nodedata(nid)				\
-({								\
-	kzalloc(sizeof(pg_data_t), GFP_KERNEL);			\
-})
-/*
- * This definition is just for error path in node hotadd.
- * For node hotremove, we have to replace this.
- */
-#define generic_free_nodedata(pgdat)	kfree(pgdat)
-
-extern pg_data_t *node_data[];
-static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
-{
-	node_data[nid] = pgdat;
-}
-
-#else /* !CONFIG_NUMA */
-
-/* never called */
-static inline pg_data_t *generic_alloc_nodedata(int nid)
-{
-	BUG();
-	return NULL;
-}
-static inline void generic_free_nodedata(pg_data_t *pgdat)
-{
-}
-static inline void arch_refresh_nodedata(int nid, pg_data_t *pgdat)
-{
-}
-#endif /* CONFIG_NUMA */
-#endif /* CONFIG_HAVE_ARCH_NODEDATA_EXTENSION */
-
 void get_online_mems(void);
 void put_online_mems(void);
 
@@ -300,7 +291,7 @@ static inline void pgdat_resize_init(struct pglist_data *pgdat) {}
 
 extern void try_offline_node(int nid);
 extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages,
-			 struct memory_group *group);
+			 struct zone *zone, struct memory_group *group);
 extern int remove_memory(u64 start, u64 size);
 extern void __remove_memory(u64 start, u64 size);
 extern int offline_and_remove_memory(u64 start, u64 size);
@@ -309,7 +300,7 @@ extern int offline_and_remove_memory(u64 start, u64 size);
 static inline void try_offline_node(int nid) {}
 
 static inline int offline_pages(unsigned long start_pfn, unsigned long nr_pages,
-				struct memory_group *group)
+				struct zone *zone, struct memory_group *group)
 {
 	return -EINVAL;
 }
@@ -326,7 +317,7 @@ extern void set_zone_contiguous(struct zone *zone);
 extern void clear_zone_contiguous(struct zone *zone);
 
 #ifdef CONFIG_MEMORY_HOTPLUG
-extern void __ref free_area_init_core_hotplug(int nid);
+extern void __ref free_area_init_core_hotplug(struct pglist_data *pgdat);
 extern int __add_memory(int nid, u64 start, u64 size, mhp_t mhp_flags);
 extern int add_memory(int nid, u64 start, u64 size, mhp_t mhp_flags);
 extern int add_memory_resource(int nid, struct resource *resource,
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index 4091692bed8c..668389b4b53d 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -8,7 +8,6 @@
 
 #include <linux/sched.h>
 #include <linux/mmzone.h>
-#include <linux/dax.h>
 #include <linux/slab.h>
 #include <linux/rbtree.h>
 #include <linux/spinlock.h>
@@ -47,6 +46,7 @@ struct mempolicy {
 	unsigned short mode; 	/* See MPOL_* above */
 	unsigned short flags;	/* See set_mempolicy() MPOL_F_* above */
 	nodemask_t nodes;	/* interleave/bind/perfer */
+	int home_node;		/* Home node to use for MPOL_BIND and MPOL_PREFERRED_MANY */
 
 	union {
 		nodemask_t cpuset_mems_allowed;	/* relative to these nodes */
@@ -184,8 +184,6 @@ extern bool vma_migratable(struct vm_area_struct *vma);
 extern int mpol_misplaced(struct page *, struct vm_area_struct *, unsigned long);
 extern void mpol_put_task_policy(struct task_struct *);
 
-extern bool numa_demotion_enabled;
-
 static inline bool mpol_is_preferred_many(struct mempolicy *pol)
 {
 	return  (pol->mode == MPOL_PREFERRED_MANY);
@@ -301,8 +299,6 @@ static inline nodemask_t *policy_nodemask_current(gfp_t gfp)
 	return NULL;
 }
 
-#define numa_demotion_enabled	false
-
 static inline bool mpol_is_preferred_many(struct mempolicy *pol)
 {
 	return  false;
diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index c0e9d35889e8..8af304f6b504 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -1,6 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _LINUX_MEMREMAP_H_
 #define _LINUX_MEMREMAP_H_
+
+#include <linux/mm.h>
 #include <linux/range.h>
 #include <linux/ioport.h>
 #include <linux/percpu-refcount.h>
@@ -66,23 +68,13 @@ enum memory_type {
 
 struct dev_pagemap_ops {
 	/*
-	 * Called once the page refcount reaches 1.  (ZONE_DEVICE pages never
-	 * reach 0 refcount unless there is a refcount bug. This allows the
-	 * device driver to implement its own memory management.)
+	 * Called once the page refcount reaches 0.  The reference count will be
+	 * reset to one by the core code after the method is called to prepare
+	 * for handing out the page again.
 	 */
 	void (*page_free)(struct page *page);
 
 	/*
-	 * Transition the refcount in struct dev_pagemap to the dead state.
-	 */
-	void (*kill)(struct dev_pagemap *pgmap);
-
-	/*
-	 * Wait for refcount in struct dev_pagemap to be idle and reap it.
-	 */
-	void (*cleanup)(struct dev_pagemap *pgmap);
-
-	/*
 	 * Used for private (un-addressable) device memory only.  Must migrate
 	 * the page back to a CPU accessible page.
 	 */
@@ -95,10 +87,14 @@ struct dev_pagemap_ops {
  * struct dev_pagemap - metadata for ZONE_DEVICE mappings
  * @altmap: pre-allocated/reserved memory for vmemmap allocations
  * @ref: reference count that pins the devm_memremap_pages() mapping
- * @internal_ref: internal reference if @ref is not provided by the caller
- * @done: completion for @internal_ref
+ * @done: completion for @ref
  * @type: memory type: see MEMORY_* in memory_hotplug.h
  * @flags: PGMAP_* flags to specify defailed behavior
+ * @vmemmap_shift: structural definition of how the vmemmap page metadata
+ *      is populated, specifically the metadata page order.
+ *	A zero value (default) uses base pages as the vmemmap metadata
+ *	representation. A bigger value will set up compound struct pages
+ *	of the requested order value.
  * @ops: method table
  * @owner: an opaque pointer identifying the entity that manages this
  *	instance.  Used by various helpers to make sure that no
@@ -109,11 +105,11 @@ struct dev_pagemap_ops {
  */
 struct dev_pagemap {
 	struct vmem_altmap altmap;
-	struct percpu_ref *ref;
-	struct percpu_ref internal_ref;
+	struct percpu_ref ref;
 	struct completion done;
 	enum memory_type type;
 	unsigned int flags;
+	unsigned long vmemmap_shift;
 	const struct dev_pagemap_ops *ops;
 	void *owner;
 	int nr_range;
@@ -130,6 +126,30 @@ static inline struct vmem_altmap *pgmap_altmap(struct dev_pagemap *pgmap)
 	return NULL;
 }
 
+static inline unsigned long pgmap_vmemmap_nr(struct dev_pagemap *pgmap)
+{
+	return 1 << pgmap->vmemmap_shift;
+}
+
+static inline bool is_device_private_page(const struct page *page)
+{
+	return IS_ENABLED(CONFIG_DEVICE_PRIVATE) &&
+		is_zone_device_page(page) &&
+		page->pgmap->type == MEMORY_DEVICE_PRIVATE;
+}
+
+static inline bool folio_is_device_private(const struct folio *folio)
+{
+	return is_device_private_page(&folio->page);
+}
+
+static inline bool is_pci_p2pdma_page(const struct page *page)
+{
+	return IS_ENABLED(CONFIG_PCI_P2PDMA) &&
+		is_zone_device_page(page) &&
+		page->pgmap->type == MEMORY_DEVICE_PCI_P2PDMA;
+}
+
 #ifdef CONFIG_ZONE_DEVICE
 void *memremap_pages(struct dev_pagemap *pgmap, int nid);
 void memunmap_pages(struct dev_pagemap *pgmap);
@@ -191,7 +211,7 @@ static inline unsigned long memremap_compat_align(void)
 static inline void put_dev_pagemap(struct dev_pagemap *pgmap)
 {
 	if (pgmap)
-		percpu_ref_put(pgmap->ref);
+		percpu_ref_put(&pgmap->ref);
 }
 
 #endif /* _LINUX_MEMREMAP_H_ */
diff --git a/include/linux/mfd/da9063/core.h b/include/linux/mfd/da9063/core.h
index fa7a43f02f27..8db52324f416 100644
--- a/include/linux/mfd/da9063/core.h
+++ b/include/linux/mfd/da9063/core.h
@@ -36,6 +36,7 @@ enum da9063_variant_codes {
 	PMIC_DA9063_BB = 0x5,
 	PMIC_DA9063_CA = 0x6,
 	PMIC_DA9063_DA = 0x7,
+	PMIC_DA9063_EA = 0x8,
 };
 
 /* Interrupts */
diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h
index cbf9d7619493..e7a7e70fdb38 100644
--- a/include/linux/mfd/dbx500-prcmu.h
+++ b/include/linux/mfd/dbx500-prcmu.h
@@ -556,31 +556,11 @@ static inline void prcmu_clear(unsigned int reg, u32 bits)
 #define PRCMU_QOS_ARM_OPP 3
 #define PRCMU_QOS_DEFAULT_VALUE -1
 
-#ifdef CONFIG_DBX500_PRCMU_QOS_POWER
-
-unsigned long prcmu_qos_get_cpufreq_opp_delay(void);
-void prcmu_qos_set_cpufreq_opp_delay(unsigned long);
-void prcmu_qos_force_opp(int, s32);
-int prcmu_qos_requirement(int pm_qos_class);
-int prcmu_qos_add_requirement(int pm_qos_class, char *name, s32 value);
-int prcmu_qos_update_requirement(int pm_qos_class, char *name, s32 new_value);
-void prcmu_qos_remove_requirement(int pm_qos_class, char *name);
-int prcmu_qos_add_notifier(int prcmu_qos_class,
-			   struct notifier_block *notifier);
-int prcmu_qos_remove_notifier(int prcmu_qos_class,
-			      struct notifier_block *notifier);
-
-#else
-
 static inline unsigned long prcmu_qos_get_cpufreq_opp_delay(void)
 {
 	return 0;
 }
 
-static inline void prcmu_qos_set_cpufreq_opp_delay(unsigned long n) {}
-
-static inline void prcmu_qos_force_opp(int prcmu_qos_class, s32 i) {}
-
 static inline int prcmu_qos_requirement(int prcmu_qos_class)
 {
 	return 0;
@@ -613,6 +593,4 @@ static inline int prcmu_qos_remove_notifier(int prcmu_qos_class,
 	return 0;
 }
 
-#endif
-
 #endif /* __MACH_PRCMU_H */
diff --git a/include/linux/mfd/hi6421-spmi-pmic.h b/include/linux/mfd/hi6421-spmi-pmic.h
deleted file mode 100644
index e5b8dbf828b6..000000000000
--- a/include/linux/mfd/hi6421-spmi-pmic.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Header file for device driver Hi6421 PMIC
- *
- * Copyright (c) 2013 Linaro Ltd.
- * Copyright (C) 2011 Hisilicon.
- * Copyright (c) 2020-2021 Huawei Technologies Co., Ltd
- *
- * Guodong Xu <guodong.xu@linaro.org>
- */
-
-#ifndef	__HISI_PMIC_H
-#define	__HISI_PMIC_H
-
-#include <linux/irqdomain.h>
-#include <linux/regmap.h>
-
-struct hi6421_spmi_pmic {
-	struct resource				*res;
-	struct device				*dev;
-	void __iomem				*regs;
-	struct regmap				*regmap;
-};
-
-#endif		/* __HISI_PMIC_H */
diff --git a/include/linux/mfd/idt82p33_reg.h b/include/linux/mfd/idt82p33_reg.h
index 129a6c078221..1db532feeb91 100644
--- a/include/linux/mfd/idt82p33_reg.h
+++ b/include/linux/mfd/idt82p33_reg.h
@@ -7,6 +7,8 @@
 #ifndef HAVE_IDT82P33_REG
 #define HAVE_IDT82P33_REG
 
+#define REG_ADDR(page, offset) (((page) << 0x7) | ((offset) & 0x7f))
+
 /* Register address */
 #define DPLL1_TOD_CNFG 0x134
 #define DPLL2_TOD_CNFG 0x1B4
@@ -41,6 +43,7 @@
 #define REG_SOFT_RESET 0X381
 
 #define OUT_MUX_CNFG(outn) REG_ADDR(0x6, (0xC * (outn)))
+#define TOD_TRIGGER(wr_trig, rd_trig) ((wr_trig & 0xf) << 4 | (rd_trig & 0xf))
 
 /* Register bit definitions */
 #define SYNC_TOD BIT(1)
diff --git a/include/linux/mfd/idt8a340_reg.h b/include/linux/mfd/idt8a340_reg.h
index 92d763230bdf..a18c1539a152 100644
--- a/include/linux/mfd/idt8a340_reg.h
+++ b/include/linux/mfd/idt8a340_reg.h
@@ -506,6 +506,10 @@
 #define STATE_MODE_SHIFT                  (0)
 #define STATE_MODE_MASK                   (0x7)
 
+/* Bit definitions for the DPLL_MANU_REF_CFG register */
+#define MANUAL_REFERENCE_SHIFT            (0)
+#define MANUAL_REFERENCE_MASK             (0x1f)
+
 /* Bit definitions for the GPIO_CFG_GBL register */
 #define SUPPLY_MODE_SHIFT                 (0)
 #define SUPPLY_MODE_MASK                  (0x3)
@@ -654,7 +658,7 @@
 /* Values of DPLL_N.DPLL_MODE.PLL_MODE */
 enum pll_mode {
 	PLL_MODE_MIN = 0,
-	PLL_MODE_NORMAL = PLL_MODE_MIN,
+	PLL_MODE_PLL = PLL_MODE_MIN,
 	PLL_MODE_WRITE_PHASE = 1,
 	PLL_MODE_WRITE_FREQUENCY = 2,
 	PLL_MODE_GPIO_INC_DEC = 3,
@@ -664,6 +668,31 @@ enum pll_mode {
 	PLL_MODE_MAX = PLL_MODE_DISABLED,
 };
 
+/* Values of DPLL_CTRL_n.DPLL_MANU_REF_CFG.MANUAL_REFERENCE */
+enum manual_reference {
+	MANU_REF_MIN = 0,
+	MANU_REF_CLK0 = MANU_REF_MIN,
+	MANU_REF_CLK1,
+	MANU_REF_CLK2,
+	MANU_REF_CLK3,
+	MANU_REF_CLK4,
+	MANU_REF_CLK5,
+	MANU_REF_CLK6,
+	MANU_REF_CLK7,
+	MANU_REF_CLK8,
+	MANU_REF_CLK9,
+	MANU_REF_CLK10,
+	MANU_REF_CLK11,
+	MANU_REF_CLK12,
+	MANU_REF_CLK13,
+	MANU_REF_CLK14,
+	MANU_REF_CLK15,
+	MANU_REF_WRITE_PHASE,
+	MANU_REF_WRITE_FREQUENCY,
+	MANU_REF_XO_DPLL,
+	MANU_REF_MAX = MANU_REF_XO_DPLL,
+};
+
 enum hw_tod_write_trig_sel {
 	HW_TOD_WR_TRIG_SEL_MIN = 0,
 	HW_TOD_WR_TRIG_SEL_MSB = HW_TOD_WR_TRIG_SEL_MIN,
diff --git a/include/linux/mfd/intel_soc_pmic.h b/include/linux/mfd/intel_soc_pmic.h
index 6a88e34cb955..945bde1fe55c 100644
--- a/include/linux/mfd/intel_soc_pmic.h
+++ b/include/linux/mfd/intel_soc_pmic.h
@@ -13,6 +13,13 @@
 
 #include <linux/regmap.h>
 
+enum intel_cht_wc_models {
+	INTEL_CHT_WC_UNKNOWN,
+	INTEL_CHT_WC_GPD_WIN_POCKET,
+	INTEL_CHT_WC_XIAOMI_MIPAD2,
+	INTEL_CHT_WC_LENOVO_YOGABOOK1,
+};
+
 /**
  * struct intel_soc_pmic - Intel SoC PMIC data
  * @irq: Master interrupt number of the parent PMIC device
@@ -39,6 +46,7 @@ struct intel_soc_pmic {
 	struct regmap_irq_chip_data *irq_chip_data_crit;
 	struct device *dev;
 	struct intel_scu_ipc_dev *scu;
+	enum intel_cht_wc_models cht_wc_model;
 };
 
 int intel_soc_pmic_exec_mipi_pmic_seq_element(u16 i2c_address, u32 reg_address,
diff --git a/include/linux/mfd/iqs62x.h b/include/linux/mfd/iqs62x.h
index 5ced55eae11b..ffc86010af74 100644
--- a/include/linux/mfd/iqs62x.h
+++ b/include/linux/mfd/iqs62x.h
@@ -14,6 +14,11 @@
 #define IQS624_PROD_NUM				0x43
 #define IQS625_PROD_NUM				0x4E
 
+#define IQS620_HW_NUM_V0			0x82
+#define IQS620_HW_NUM_V1			IQS620_HW_NUM_V0
+#define IQS620_HW_NUM_V2			IQS620_HW_NUM_V0
+#define IQS620_HW_NUM_V3			0x92
+
 #define IQS621_ALS_FLAGS			0x16
 #define IQS622_ALS_FLAGS			0x14
 
@@ -129,6 +134,8 @@ struct iqs62x_core {
 	struct completion fw_done;
 	enum iqs62x_ui_sel ui_sel;
 	unsigned long event_cache;
+	u8 sw_num;
+	u8 hw_num;
 };
 
 extern const struct iqs62x_event_desc iqs62x_events[IQS62X_NUM_EVENTS];
diff --git a/include/linux/mfd/lpc_ich.h b/include/linux/mfd/lpc_ich.h
index 39967a5eca6d..ea4a4b1b246a 100644
--- a/include/linux/mfd/lpc_ich.h
+++ b/include/linux/mfd/lpc_ich.h
@@ -8,7 +8,7 @@
 #ifndef LPC_ICH_H
 #define LPC_ICH_H
 
-#include <linux/platform_data/x86/intel-spi.h>
+#include <linux/platform_data/x86/spi-intel.h>
 
 /* GPIO resources */
 #define ICH_RES_GPIO	0
diff --git a/include/linux/mfd/max77686-private.h b/include/linux/mfd/max77686-private.h
index 833e578e051e..3acceeedbaba 100644
--- a/include/linux/mfd/max77686-private.h
+++ b/include/linux/mfd/max77686-private.h
@@ -133,35 +133,35 @@ enum max77686_pmic_reg {
 	/* Reserved: 0x7A-0x7D */
 
 	MAX77686_REG_BBAT_CHG		= 0x7E,
-	MAX77686_REG_32KHZ			= 0x7F,
+	MAX77686_REG_32KHZ		= 0x7F,
 
 	MAX77686_REG_PMIC_END		= 0x80,
 };
 
 enum max77686_rtc_reg {
-	MAX77686_RTC_INT			= 0x00,
-	MAX77686_RTC_INTM			= 0x01,
+	MAX77686_RTC_INT		= 0x00,
+	MAX77686_RTC_INTM		= 0x01,
 	MAX77686_RTC_CONTROLM		= 0x02,
 	MAX77686_RTC_CONTROL		= 0x03,
 	MAX77686_RTC_UPDATE0		= 0x04,
 	/* Reserved: 0x5 */
 	MAX77686_WTSR_SMPL_CNTL		= 0x06,
-	MAX77686_RTC_SEC			= 0x07,
-	MAX77686_RTC_MIN			= 0x08,
-	MAX77686_RTC_HOUR			= 0x09,
+	MAX77686_RTC_SEC		= 0x07,
+	MAX77686_RTC_MIN		= 0x08,
+	MAX77686_RTC_HOUR		= 0x09,
 	MAX77686_RTC_WEEKDAY		= 0x0A,
-	MAX77686_RTC_MONTH			= 0x0B,
-	MAX77686_RTC_YEAR			= 0x0C,
-	MAX77686_RTC_DATE			= 0x0D,
-	MAX77686_ALARM1_SEC			= 0x0E,
-	MAX77686_ALARM1_MIN			= 0x0F,
+	MAX77686_RTC_MONTH		= 0x0B,
+	MAX77686_RTC_YEAR		= 0x0C,
+	MAX77686_RTC_MONTHDAY		= 0x0D,
+	MAX77686_ALARM1_SEC		= 0x0E,
+	MAX77686_ALARM1_MIN		= 0x0F,
 	MAX77686_ALARM1_HOUR		= 0x10,
 	MAX77686_ALARM1_WEEKDAY		= 0x11,
 	MAX77686_ALARM1_MONTH		= 0x12,
 	MAX77686_ALARM1_YEAR		= 0x13,
 	MAX77686_ALARM1_DATE		= 0x14,
-	MAX77686_ALARM2_SEC			= 0x15,
-	MAX77686_ALARM2_MIN			= 0x16,
+	MAX77686_ALARM2_SEC		= 0x15,
+	MAX77686_ALARM2_MIN		= 0x16,
 	MAX77686_ALARM2_HOUR		= 0x17,
 	MAX77686_ALARM2_WEEKDAY		= 0x18,
 	MAX77686_ALARM2_MONTH		= 0x19,
@@ -352,7 +352,7 @@ enum max77802_rtc_reg {
 	MAX77802_RTC_WEEKDAY		= 0xCA,
 	MAX77802_RTC_MONTH		= 0xCB,
 	MAX77802_RTC_YEAR		= 0xCC,
-	MAX77802_RTC_DATE		= 0xCD,
+	MAX77802_RTC_MONTHDAY		= 0xCD,
 	MAX77802_RTC_AE1		= 0xCE,
 	MAX77802_ALARM1_SEC		= 0xCF,
 	MAX77802_ALARM1_MIN		= 0xD0,
diff --git a/include/linux/mfd/max77714.h b/include/linux/mfd/max77714.h
new file mode 100644
index 000000000000..a970dc455426
--- /dev/null
+++ b/include/linux/mfd/max77714.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Maxim MAX77714 Register and data structures definition.
+ *
+ * Copyright (C) 2022 Luca Ceresoli
+ * Author: Luca Ceresoli <luca@lucaceresoli.net>
+ */
+
+#ifndef __LINUX_MFD_MAX77714_H_
+#define __LINUX_MFD_MAX77714_H_
+
+#include <linux/bits.h>
+
+#define MAX77714_INT_TOP	0x00
+#define MAX77714_INT_TOPM	0x07 /* Datasheet says "read only", but it is RW */
+
+#define MAX77714_INT_TOP_ONOFF		BIT(1)
+#define MAX77714_INT_TOP_RTC		BIT(3)
+#define MAX77714_INT_TOP_GPIO		BIT(4)
+#define MAX77714_INT_TOP_LDO		BIT(5)
+#define MAX77714_INT_TOP_SD		BIT(6)
+#define MAX77714_INT_TOP_GLBL		BIT(7)
+
+#define MAX77714_32K_STATUS	0x30
+#define MAX77714_32K_STATUS_SIOSCOK	BIT(5)
+#define MAX77714_32K_STATUS_XOSCOK	BIT(4)
+#define MAX77714_32K_STATUS_32KSOURCE	BIT(3)
+#define MAX77714_32K_STATUS_32KLOAD_MSK	0x3
+#define MAX77714_32K_STATUS_32KLOAD_SHF	1
+#define MAX77714_32K_STATUS_CRYSTAL_CFG	BIT(0)
+
+#define MAX77714_32K_CONFIG	0x31
+#define MAX77714_32K_CONFIG_XOSC_RETRY	BIT(4)
+
+#define MAX77714_CNFG_GLBL2	0x91
+#define MAX77714_WDTEN			BIT(2)
+#define MAX77714_WDTSLPC		BIT(3)
+#define MAX77714_TWD_MASK		0x3
+#define MAX77714_TWD_2s			0x0
+#define MAX77714_TWD_16s		0x1
+#define MAX77714_TWD_64s		0x2
+#define MAX77714_TWD_128s		0x3
+
+#define MAX77714_CNFG_GLBL3	0x92
+#define MAX77714_WDTC			BIT(0)
+
+#define MAX77714_CNFG2_ONOFF	0x94
+#define MAX77714_WD_RST_WK		BIT(5)
+
+/* Interrupts */
+enum {
+	MAX77714_IRQ_TOP_ONOFF,
+	MAX77714_IRQ_TOP_RTC,		/* Real-time clock */
+	MAX77714_IRQ_TOP_GPIO,		/* GPIOs */
+	MAX77714_IRQ_TOP_LDO,		/* Low-dropout regulators */
+	MAX77714_IRQ_TOP_SD,		/* Step-down regulators */
+	MAX77714_IRQ_TOP_GLBL,		/* "Global resources": Low-Battery, overtemp... */
+};
+
+#endif /* __LINUX_MFD_MAX77714_H_ */
diff --git a/include/linux/mfd/mt6358/registers.h b/include/linux/mfd/mt6358/registers.h
index 201139b12140..3d33517f178c 100644
--- a/include/linux/mfd/mt6358/registers.h
+++ b/include/linux/mfd/mt6358/registers.h
@@ -94,6 +94,10 @@
 #define MT6358_BUCK_VCORE_CON0                0x1488
 #define MT6358_BUCK_VCORE_DBG0                0x149e
 #define MT6358_BUCK_VCORE_DBG1                0x14a0
+#define MT6358_BUCK_VCORE_SSHUB_CON0          0x14a4
+#define MT6358_BUCK_VCORE_SSHUB_CON1          0x14a6
+#define MT6358_BUCK_VCORE_SSHUB_ELR0          MT6358_BUCK_VCORE_SSHUB_CON1
+#define MT6358_BUCK_VCORE_SSHUB_DBG1          MT6358_BUCK_VCORE_DBG1
 #define MT6358_BUCK_VCORE_ELR0                0x14aa
 #define MT6358_BUCK_VGPU_CON0                 0x1508
 #define MT6358_BUCK_VGPU_DBG0                 0x151e
@@ -169,6 +173,9 @@
 #define MT6358_LDO_VSRAM_OTHERS_CON0          0x1ba6
 #define MT6358_LDO_VSRAM_OTHERS_DBG0          0x1bc0
 #define MT6358_LDO_VSRAM_OTHERS_DBG1          0x1bc2
+#define MT6358_LDO_VSRAM_OTHERS_SSHUB_CON0    0x1bc4
+#define MT6358_LDO_VSRAM_OTHERS_SSHUB_CON1    0x1bc6
+#define MT6358_LDO_VSRAM_OTHERS_SSHUB_DBG1    MT6358_LDO_VSRAM_OTHERS_DBG1
 #define MT6358_LDO_VSRAM_GPU_CON0             0x1bc8
 #define MT6358_LDO_VSRAM_GPU_DBG0             0x1be2
 #define MT6358_LDO_VSRAM_GPU_DBG1             0x1be4
diff --git a/include/linux/mfd/mt6397/core.h b/include/linux/mfd/mt6397/core.h
index 56f210eebc54..1cf78726503b 100644
--- a/include/linux/mfd/mt6397/core.h
+++ b/include/linux/mfd/mt6397/core.h
@@ -14,6 +14,7 @@ enum chip_id {
 	MT6323_CHIP_ID = 0x23,
 	MT6358_CHIP_ID = 0x58,
 	MT6359_CHIP_ID = 0x59,
+	MT6366_CHIP_ID = 0x66,
 	MT6391_CHIP_ID = 0x91,
 	MT6397_CHIP_ID = 0x97,
 };
diff --git a/include/linux/mfd/ntxec.h b/include/linux/mfd/ntxec.h
index 26ab3b8eb612..cc6f07bfa2b3 100644
--- a/include/linux/mfd/ntxec.h
+++ b/include/linux/mfd/ntxec.h
@@ -26,7 +26,7 @@ struct ntxec {
  * This convenience function converts an 8-bit value to 16-bit for use in the
  * second kind of register.
  */
-static inline __be16 ntxec_reg8(u8 value)
+static inline u16 ntxec_reg8(u8 value)
 {
 	return value << 8;
 }
diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h
index a96e6d43ca06..58602032e642 100644
--- a/include/linux/mfd/rk808.h
+++ b/include/linux/mfd/rk808.h
@@ -373,6 +373,7 @@ enum rk805_reg {
 #define SWITCH2_EN	BIT(6)
 #define SWITCH1_EN	BIT(5)
 #define DEV_OFF_RST	BIT(3)
+#define DEV_RST		BIT(2)
 #define DEV_OFF		BIT(0)
 #define RTC_STOP	BIT(0)
 
diff --git a/include/linux/mfd/rohm-bd70528.h b/include/linux/mfd/rohm-bd70528.h
deleted file mode 100644
index 4a5966475a35..000000000000
--- a/include/linux/mfd/rohm-bd70528.h
+++ /dev/null
@@ -1,389 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/* Copyright (C) 2018 ROHM Semiconductors */
-
-#ifndef __LINUX_MFD_BD70528_H__
-#define __LINUX_MFD_BD70528_H__
-
-#include <linux/bits.h>
-#include <linux/device.h>
-#include <linux/mfd/rohm-generic.h>
-#include <linux/mfd/rohm-shared.h>
-#include <linux/regmap.h>
-
-enum {
-	BD70528_BUCK1,
-	BD70528_BUCK2,
-	BD70528_BUCK3,
-	BD70528_LDO1,
-	BD70528_LDO2,
-	BD70528_LDO3,
-	BD70528_LED1,
-	BD70528_LED2,
-};
-
-struct bd70528_data {
-	struct rohm_regmap_dev chip;
-	struct mutex rtc_timer_lock;
-};
-
-#define BD70528_BUCK_VOLTS 0x10
-#define BD70528_LDO_VOLTS 0x20
-
-#define BD70528_REG_BUCK1_EN	0x0F
-#define BD70528_REG_BUCK1_VOLT	0x15
-#define BD70528_REG_BUCK2_EN	0x10
-#define BD70528_REG_BUCK2_VOLT	0x16
-#define BD70528_REG_BUCK3_EN	0x11
-#define BD70528_REG_BUCK3_VOLT	0x17
-#define BD70528_REG_LDO1_EN	0x1b
-#define BD70528_REG_LDO1_VOLT	0x1e
-#define BD70528_REG_LDO2_EN	0x1c
-#define BD70528_REG_LDO2_VOLT	0x1f
-#define BD70528_REG_LDO3_EN	0x1d
-#define BD70528_REG_LDO3_VOLT	0x20
-#define BD70528_REG_LED_CTRL	0x2b
-#define BD70528_REG_LED_VOLT	0x29
-#define BD70528_REG_LED_EN	0x2a
-
-/* main irq registers */
-#define BD70528_REG_INT_MAIN	0x7E
-#define BD70528_REG_INT_MAIN_MASK 0x74
-
-/* 'sub irq' registers */
-#define BD70528_REG_INT_SHDN	0x7F
-#define BD70528_REG_INT_PWR_FLT	0x80
-#define BD70528_REG_INT_VR_FLT	0x81
-#define BD70528_REG_INT_MISC	0x82
-#define BD70528_REG_INT_BAT1	0x83
-#define BD70528_REG_INT_BAT2	0x84
-#define BD70528_REG_INT_RTC	0x85
-#define BD70528_REG_INT_GPIO	0x86
-#define BD70528_REG_INT_OP_FAIL	0x87
-
-#define BD70528_REG_INT_SHDN_MASK	0x75
-#define BD70528_REG_INT_PWR_FLT_MASK	0x76
-#define BD70528_REG_INT_VR_FLT_MASK	0x77
-#define BD70528_REG_INT_MISC_MASK	0x78
-#define BD70528_REG_INT_BAT1_MASK	0x79
-#define BD70528_REG_INT_BAT2_MASK	0x7a
-#define BD70528_REG_INT_RTC_MASK	0x7b
-#define BD70528_REG_INT_GPIO_MASK	0x7c
-#define BD70528_REG_INT_OP_FAIL_MASK	0x7d
-
-/* Reset related 'magic' registers */
-#define BD70528_REG_SHIPMODE	0x03
-#define BD70528_REG_HWRESET	0x04
-#define BD70528_REG_WARMRESET	0x05
-#define BD70528_REG_STANDBY	0x06
-
-/* GPIO registers */
-#define BD70528_REG_GPIO_STATE	0x8F
-
-#define BD70528_REG_GPIO1_IN	0x4d
-#define BD70528_REG_GPIO2_IN	0x4f
-#define BD70528_REG_GPIO3_IN	0x51
-#define BD70528_REG_GPIO4_IN	0x53
-#define BD70528_REG_GPIO1_OUT	0x4e
-#define BD70528_REG_GPIO2_OUT	0x50
-#define BD70528_REG_GPIO3_OUT	0x52
-#define BD70528_REG_GPIO4_OUT	0x54
-
-/* RTC */
-
-#define BD70528_REG_RTC_COUNT_H		0x2d
-#define BD70528_REG_RTC_COUNT_L		0x2e
-#define BD70528_REG_RTC_SEC		0x2f
-#define BD70528_REG_RTC_MINUTE		0x30
-#define BD70528_REG_RTC_HOUR		0x31
-#define BD70528_REG_RTC_WEEK		0x32
-#define BD70528_REG_RTC_DAY		0x33
-#define BD70528_REG_RTC_MONTH		0x34
-#define BD70528_REG_RTC_YEAR		0x35
-
-#define BD70528_REG_RTC_ALM_SEC		0x36
-#define BD70528_REG_RTC_ALM_START	BD70528_REG_RTC_ALM_SEC
-#define BD70528_REG_RTC_ALM_MINUTE	0x37
-#define BD70528_REG_RTC_ALM_HOUR	0x38
-#define BD70528_REG_RTC_ALM_WEEK	0x39
-#define BD70528_REG_RTC_ALM_DAY		0x3a
-#define BD70528_REG_RTC_ALM_MONTH	0x3b
-#define BD70528_REG_RTC_ALM_YEAR	0x3c
-#define BD70528_REG_RTC_ALM_MASK	0x3d
-#define BD70528_REG_RTC_ALM_REPEAT	0x3e
-#define BD70528_REG_RTC_START		BD70528_REG_RTC_SEC
-
-#define BD70528_REG_RTC_WAKE_SEC	0x43
-#define BD70528_REG_RTC_WAKE_START	BD70528_REG_RTC_WAKE_SEC
-#define BD70528_REG_RTC_WAKE_MIN	0x44
-#define BD70528_REG_RTC_WAKE_HOUR	0x45
-#define BD70528_REG_RTC_WAKE_CTRL	0x46
-
-#define BD70528_REG_ELAPSED_TIMER_EN	0x42
-#define BD70528_REG_WAKE_EN		0x46
-
-/* WDT registers */
-#define BD70528_REG_WDT_CTRL		0x4A
-#define BD70528_REG_WDT_HOUR		0x49
-#define BD70528_REG_WDT_MINUTE		0x48
-#define BD70528_REG_WDT_SEC		0x47
-
-/* Charger / Battery */
-#define BD70528_REG_CHG_CURR_STAT	0x59
-#define BD70528_REG_CHG_BAT_STAT	0x57
-#define BD70528_REG_CHG_BAT_TEMP	0x58
-#define BD70528_REG_CHG_IN_STAT		0x56
-#define BD70528_REG_CHG_DCIN_ILIM	0x5d
-#define BD70528_REG_CHG_CHG_CURR_WARM	0x61
-#define BD70528_REG_CHG_CHG_CURR_COLD	0x62
-
-/* Masks for main IRQ register bits */
-enum {
-	BD70528_INT_SHDN,
-#define BD70528_INT_SHDN_MASK BIT(BD70528_INT_SHDN)
-	BD70528_INT_PWR_FLT,
-#define BD70528_INT_PWR_FLT_MASK BIT(BD70528_INT_PWR_FLT)
-	BD70528_INT_VR_FLT,
-#define BD70528_INT_VR_FLT_MASK BIT(BD70528_INT_VR_FLT)
-	BD70528_INT_MISC,
-#define BD70528_INT_MISC_MASK BIT(BD70528_INT_MISC)
-	BD70528_INT_BAT1,
-#define BD70528_INT_BAT1_MASK BIT(BD70528_INT_BAT1)
-	BD70528_INT_RTC,
-#define BD70528_INT_RTC_MASK BIT(BD70528_INT_RTC)
-	BD70528_INT_GPIO,
-#define BD70528_INT_GPIO_MASK BIT(BD70528_INT_GPIO)
-	BD70528_INT_OP_FAIL,
-#define BD70528_INT_OP_FAIL_MASK BIT(BD70528_INT_OP_FAIL)
-};
-
-/* IRQs */
-enum {
-	/* Shutdown register IRQs */
-	BD70528_INT_LONGPUSH,
-	BD70528_INT_WDT,
-	BD70528_INT_HWRESET,
-	BD70528_INT_RSTB_FAULT,
-	BD70528_INT_VBAT_UVLO,
-	BD70528_INT_TSD,
-	BD70528_INT_RSTIN,
-	/* Power failure register IRQs */
-	BD70528_INT_BUCK1_FAULT,
-	BD70528_INT_BUCK2_FAULT,
-	BD70528_INT_BUCK3_FAULT,
-	BD70528_INT_LDO1_FAULT,
-	BD70528_INT_LDO2_FAULT,
-	BD70528_INT_LDO3_FAULT,
-	BD70528_INT_LED1_FAULT,
-	BD70528_INT_LED2_FAULT,
-	/* VR FAULT register IRQs */
-	BD70528_INT_BUCK1_OCP,
-	BD70528_INT_BUCK2_OCP,
-	BD70528_INT_BUCK3_OCP,
-	BD70528_INT_LED1_OCP,
-	BD70528_INT_LED2_OCP,
-	BD70528_INT_BUCK1_FULLON,
-	BD70528_INT_BUCK2_FULLON,
-	/* PMU register interrupts */
-	BD70528_INT_SHORTPUSH,
-	BD70528_INT_AUTO_WAKEUP,
-	BD70528_INT_STATE_CHANGE,
-	/* Charger 1 register IRQs */
-	BD70528_INT_BAT_OV_RES,
-	BD70528_INT_BAT_OV_DET,
-	BD70528_INT_DBAT_DET,
-	BD70528_INT_BATTSD_COLD_RES,
-	BD70528_INT_BATTSD_COLD_DET,
-	BD70528_INT_BATTSD_HOT_RES,
-	BD70528_INT_BATTSD_HOT_DET,
-	BD70528_INT_CHG_TSD,
-	/* Charger 2 register IRQs */
-	BD70528_INT_BAT_RMV,
-	BD70528_INT_BAT_DET,
-	BD70528_INT_DCIN2_OV_RES,
-	BD70528_INT_DCIN2_OV_DET,
-	BD70528_INT_DCIN2_RMV,
-	BD70528_INT_DCIN2_DET,
-	BD70528_INT_DCIN1_RMV,
-	BD70528_INT_DCIN1_DET,
-	/* RTC register IRQs */
-	BD70528_INT_RTC_ALARM,
-	BD70528_INT_ELPS_TIM,
-	/* GPIO register IRQs */
-	BD70528_INT_GPIO0,
-	BD70528_INT_GPIO1,
-	BD70528_INT_GPIO2,
-	BD70528_INT_GPIO3,
-	/* Invalid operation register IRQs */
-	BD70528_INT_BUCK1_DVS_OPFAIL,
-	BD70528_INT_BUCK2_DVS_OPFAIL,
-	BD70528_INT_BUCK3_DVS_OPFAIL,
-	BD70528_INT_LED1_VOLT_OPFAIL,
-	BD70528_INT_LED2_VOLT_OPFAIL,
-};
-
-/* Masks */
-#define BD70528_INT_LONGPUSH_MASK 0x1
-#define BD70528_INT_WDT_MASK 0x2
-#define BD70528_INT_HWRESET_MASK 0x4
-#define BD70528_INT_RSTB_FAULT_MASK 0x8
-#define BD70528_INT_VBAT_UVLO_MASK 0x10
-#define BD70528_INT_TSD_MASK 0x20
-#define BD70528_INT_RSTIN_MASK 0x40
-
-#define BD70528_INT_BUCK1_FAULT_MASK 0x1
-#define BD70528_INT_BUCK2_FAULT_MASK 0x2
-#define BD70528_INT_BUCK3_FAULT_MASK 0x4
-#define BD70528_INT_LDO1_FAULT_MASK 0x8
-#define BD70528_INT_LDO2_FAULT_MASK 0x10
-#define BD70528_INT_LDO3_FAULT_MASK 0x20
-#define BD70528_INT_LED1_FAULT_MASK 0x40
-#define BD70528_INT_LED2_FAULT_MASK 0x80
-
-#define BD70528_INT_BUCK1_OCP_MASK 0x1
-#define BD70528_INT_BUCK2_OCP_MASK 0x2
-#define BD70528_INT_BUCK3_OCP_MASK 0x4
-#define BD70528_INT_LED1_OCP_MASK 0x8
-#define BD70528_INT_LED2_OCP_MASK 0x10
-#define BD70528_INT_BUCK1_FULLON_MASK 0x20
-#define BD70528_INT_BUCK2_FULLON_MASK 0x40
-
-#define BD70528_INT_SHORTPUSH_MASK 0x1
-#define BD70528_INT_AUTO_WAKEUP_MASK 0x2
-#define BD70528_INT_STATE_CHANGE_MASK 0x10
-
-#define BD70528_INT_BAT_OV_RES_MASK 0x1
-#define BD70528_INT_BAT_OV_DET_MASK 0x2
-#define BD70528_INT_DBAT_DET_MASK 0x4
-#define BD70528_INT_BATTSD_COLD_RES_MASK 0x8
-#define BD70528_INT_BATTSD_COLD_DET_MASK 0x10
-#define BD70528_INT_BATTSD_HOT_RES_MASK 0x20
-#define BD70528_INT_BATTSD_HOT_DET_MASK 0x40
-#define BD70528_INT_CHG_TSD_MASK 0x80
-
-#define BD70528_INT_BAT_RMV_MASK 0x1
-#define BD70528_INT_BAT_DET_MASK 0x2
-#define BD70528_INT_DCIN2_OV_RES_MASK 0x4
-#define BD70528_INT_DCIN2_OV_DET_MASK 0x8
-#define BD70528_INT_DCIN2_RMV_MASK 0x10
-#define BD70528_INT_DCIN2_DET_MASK 0x20
-#define BD70528_INT_DCIN1_RMV_MASK 0x40
-#define BD70528_INT_DCIN1_DET_MASK 0x80
-
-#define BD70528_INT_RTC_ALARM_MASK 0x1
-#define BD70528_INT_ELPS_TIM_MASK 0x2
-
-#define BD70528_INT_GPIO0_MASK 0x1
-#define BD70528_INT_GPIO1_MASK 0x2
-#define BD70528_INT_GPIO2_MASK 0x4
-#define BD70528_INT_GPIO3_MASK 0x8
-
-#define BD70528_INT_BUCK1_DVS_OPFAIL_MASK 0x1
-#define BD70528_INT_BUCK2_DVS_OPFAIL_MASK 0x2
-#define BD70528_INT_BUCK3_DVS_OPFAIL_MASK 0x4
-#define BD70528_INT_LED1_VOLT_OPFAIL_MASK 0x10
-#define BD70528_INT_LED2_VOLT_OPFAIL_MASK 0x20
-
-#define BD70528_DEBOUNCE_MASK 0x3
-
-#define BD70528_DEBOUNCE_DISABLE 0
-#define BD70528_DEBOUNCE_15MS 1
-#define BD70528_DEBOUNCE_30MS 2
-#define BD70528_DEBOUNCE_50MS 3
-
-#define BD70528_GPIO_DRIVE_MASK 0x2
-#define BD70528_GPIO_PUSH_PULL 0x0
-#define BD70528_GPIO_OPEN_DRAIN 0x2
-
-#define BD70528_GPIO_OUT_EN_MASK 0x80
-#define BD70528_GPIO_OUT_ENABLE 0x80
-#define BD70528_GPIO_OUT_DISABLE 0x0
-
-#define BD70528_GPIO_OUT_HI 0x1
-#define BD70528_GPIO_OUT_LO 0x0
-#define BD70528_GPIO_OUT_MASK 0x1
-
-#define BD70528_GPIO_IN_STATE_BASE 1
-
-/* RTC masks to mask out reserved bits */
-
-#define BD70528_MASK_ELAPSED_TIMER_EN	0x1
-/* Mask second, min and hour fields
- * HW would support ALM irq for over 24h
- * (by setting day, month and year too)
- * but as we wish to keep this same as for
- * wake-up we limit ALM to 24H and only
- * unmask sec, min and hour
- */
-#define BD70528_MASK_WAKE_EN		0x1
-
-/* WDT masks */
-#define BD70528_MASK_WDT_EN		0x1
-#define BD70528_MASK_WDT_HOUR		0x1
-#define BD70528_MASK_WDT_MINUTE		0x7f
-#define BD70528_MASK_WDT_SEC		0x7f
-
-#define BD70528_WDT_STATE_BIT		0x1
-#define BD70528_ELAPSED_STATE_BIT	0x2
-#define BD70528_WAKE_STATE_BIT		0x4
-
-/* Charger masks */
-#define BD70528_MASK_CHG_STAT		0x7f
-#define BD70528_MASK_CHG_BAT_TIMER	0x20
-#define BD70528_MASK_CHG_BAT_OVERVOLT	0x10
-#define BD70528_MASK_CHG_BAT_DETECT	0x1
-#define BD70528_MASK_CHG_DCIN1_UVLO	0x1
-#define BD70528_MASK_CHG_DCIN_ILIM	0x3f
-#define BD70528_MASK_CHG_CHG_CURR	0x1f
-#define BD70528_MASK_CHG_TRICKLE_CURR	0x10
-
-/*
- * Note, external battery register is the lonely rider at
- * address 0xc5. See how to stuff that in the regmap
- */
-#define BD70528_MAX_REGISTER 0x94
-
-/* Buck control masks */
-#define BD70528_MASK_RUN_EN	0x4
-#define BD70528_MASK_STBY_EN	0x2
-#define BD70528_MASK_IDLE_EN	0x1
-#define BD70528_MASK_LED1_EN	0x1
-#define BD70528_MASK_LED2_EN	0x10
-
-#define BD70528_MASK_BUCK_VOLT	0xf
-#define BD70528_MASK_LDO_VOLT	0x1f
-#define BD70528_MASK_LED1_VOLT	0x1
-#define BD70528_MASK_LED2_VOLT	0x10
-
-/* Misc irq masks */
-#define BD70528_INT_MASK_SHORT_PUSH	1
-#define BD70528_INT_MASK_AUTO_WAKE	2
-#define BD70528_INT_MASK_POWER_STATE	4
-
-#define BD70528_MASK_BUCK_RAMP 0x10
-#define BD70528_SIFT_BUCK_RAMP 4
-
-#if IS_ENABLED(CONFIG_BD70528_WATCHDOG)
-
-int bd70528_wdt_set(struct rohm_regmap_dev *data, int enable, int *old_state);
-void bd70528_wdt_lock(struct rohm_regmap_dev *data);
-void bd70528_wdt_unlock(struct rohm_regmap_dev *data);
-
-#else /* CONFIG_BD70528_WATCHDOG */
-
-static inline int bd70528_wdt_set(struct rohm_regmap_dev *data, int enable,
-				  int *old_state)
-{
-	return 0;
-}
-
-static inline void bd70528_wdt_lock(struct rohm_regmap_dev *data)
-{
-}
-
-static inline void bd70528_wdt_unlock(struct rohm_regmap_dev *data)
-{
-}
-
-#endif /* CONFIG_BD70528_WATCHDOG */
-
-#endif /* __LINUX_MFD_BD70528_H__ */
diff --git a/include/linux/mfd/rohm-generic.h b/include/linux/mfd/rohm-generic.h
index 35b392a0d73a..4eeb22876bad 100644
--- a/include/linux/mfd/rohm-generic.h
+++ b/include/linux/mfd/rohm-generic.h
@@ -12,7 +12,6 @@ enum rohm_chip_type {
 	ROHM_CHIP_TYPE_BD9573,
 	ROHM_CHIP_TYPE_BD9574,
 	ROHM_CHIP_TYPE_BD9576,
-	ROHM_CHIP_TYPE_BD70528,
 	ROHM_CHIP_TYPE_BD71815,
 	ROHM_CHIP_TYPE_BD71828,
 	ROHM_CHIP_TYPE_BD71837,
@@ -80,14 +79,8 @@ int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
 				  const struct regulator_desc *desc,
 				  struct regmap *regmap);
 
-#else
-static inline int rohm_regulator_set_dvs_levels(const struct rohm_dvs_config *dvs,
-						struct device_node *np,
-						const struct regulator_desc *desc,
-						struct regmap *regmap)
-{
-	return 0;
-}
+int rohm_regulator_set_voltage_sel_restricted(struct regulator_dev *rdev,
+					      unsigned int sel);
 #endif
 
 #endif
diff --git a/include/linux/mfd/stm32-lptimer.h b/include/linux/mfd/stm32-lptimer.h
index 90b20550c1c8..06d3f11dc3c9 100644
--- a/include/linux/mfd/stm32-lptimer.h
+++ b/include/linux/mfd/stm32-lptimer.h
@@ -45,6 +45,11 @@
 #define STM32_LPTIM_PRESC	GENMASK(11, 9)
 #define STM32_LPTIM_CKPOL	GENMASK(2, 1)
 
+/* STM32_LPTIM_CKPOL */
+#define STM32_LPTIM_CKPOL_RISING_EDGE	0
+#define STM32_LPTIM_CKPOL_FALLING_EDGE	1
+#define STM32_LPTIM_CKPOL_BOTH_EDGES	2
+
 /* STM32_LPTIM_ARR */
 #define STM32_LPTIM_MAX_ARR	0xFFFF
 
diff --git a/include/linux/mfd/stm32-timers.h b/include/linux/mfd/stm32-timers.h
index f8db83aedb2b..5f5c43fd69dd 100644
--- a/include/linux/mfd/stm32-timers.h
+++ b/include/linux/mfd/stm32-timers.h
@@ -82,6 +82,10 @@
 #define MAX_TIM_ICPSC		0x3
 #define TIM_CR2_MMS_SHIFT	4
 #define TIM_CR2_MMS2_SHIFT	20
+#define TIM_SMCR_SMS_SLAVE_MODE_DISABLED	0 /* counts on internal clock when CEN=1 */
+#define TIM_SMCR_SMS_ENCODER_MODE_1		1 /* counts TI1FP1 edges, depending on TI2FP2 level */
+#define TIM_SMCR_SMS_ENCODER_MODE_2		2 /* counts TI2FP2 edges, depending on TI1FP1 level */
+#define TIM_SMCR_SMS_ENCODER_MODE_3		3 /* counts on both TI1FP1 and TI2FP2 edges */
 #define TIM_SMCR_TS_SHIFT	4
 #define TIM_BDTR_BKF_MASK	0xF
 #define TIM_BDTR_BKF_SHIFT(x)	(16 + (x) * 4)
diff --git a/include/linux/mfd/sy7636a.h b/include/linux/mfd/sy7636a.h
new file mode 100644
index 000000000000..22f03b2f851e
--- /dev/null
+++ b/include/linux/mfd/sy7636a.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Functions to access SY3686A power management chip.
+ *
+ * Copyright (C) 2021 reMarkable AS - http://www.remarkable.com/
+ */
+
+#ifndef __MFD_SY7636A_H
+#define __MFD_SY7636A_H
+
+#define SY7636A_REG_OPERATION_MODE_CRL		0x00
+/* It is set if a gpio is used to control the regulator */
+#define SY7636A_OPERATION_MODE_CRL_VCOMCTL	BIT(6)
+#define SY7636A_OPERATION_MODE_CRL_ONOFF	BIT(7)
+#define SY7636A_REG_VCOM_ADJUST_CTRL_L		0x01
+#define SY7636A_REG_VCOM_ADJUST_CTRL_H		0x02
+#define SY7636A_REG_VCOM_ADJUST_CTRL_MASK	0x01ff
+#define SY7636A_REG_VLDO_VOLTAGE_ADJULST_CTRL	0x03
+#define SY7636A_REG_POWER_ON_DELAY_TIME		0x06
+#define SY7636A_REG_FAULT_FLAG			0x07
+#define SY7636A_FAULT_FLAG_PG			BIT(0)
+#define SY7636A_REG_TERMISTOR_READOUT		0x08
+
+#define SY7636A_REG_MAX				0x08
+
+#define VCOM_ADJUST_CTRL_MASK	0x1ff
+// Used to shift the high byte
+#define VCOM_ADJUST_CTRL_SHIFT	8
+// Used to scale from VCOM_ADJUST_CTRL to mv
+#define VCOM_ADJUST_CTRL_SCAL	10000
+
+#define FAULT_FLAG_SHIFT	1
+
+#endif /* __LINUX_MFD_SY7636A_H */
diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h
index ffc091b77633..4063b0614d90 100644
--- a/include/linux/mfd/ti_am335x_tscadc.h
+++ b/include/linux/mfd/ti_am335x_tscadc.h
@@ -1,22 +1,16 @@
-#ifndef __LINUX_TI_AM335X_TSCADC_MFD_H
-#define __LINUX_TI_AM335X_TSCADC_MFD_H
-
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * TI Touch Screen / ADC MFD driver
  *
  * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
+#ifndef __LINUX_TI_AM335X_TSCADC_MFD_H
+#define __LINUX_TI_AM335X_TSCADC_MFD_H
+
+#include <linux/bitfield.h>
 #include <linux/mfd/core.h>
+#include <linux/units.h>
 
 #define REG_RAWIRQSTATUS	0x024
 #define REG_IRQSTATUS		0x028
@@ -46,13 +40,6 @@
 /* IRQ wakeup enable */
 #define IRQWKUP_ENB		BIT(0)
 
-/* Step Enable */
-#define STEPENB_MASK		(0x1FFFF << 0)
-#define STEPENB(val)		((val) << 0)
-#define ENB(val)			(1 << (val))
-#define STPENB_STEPENB		STEPENB(0x1FFFF)
-#define STPENB_STEPENB_TC	STEPENB(0x1FFF)
-
 /* IRQ enable */
 #define IRQENB_HW_PEN		BIT(0)
 #define IRQENB_EOS		BIT(1)
@@ -65,12 +52,10 @@
 #define IRQENB_PENUP		BIT(9)
 
 /* Step Configuration */
-#define STEPCONFIG_MODE_MASK	(3 << 0)
-#define STEPCONFIG_MODE(val)	((val) << 0)
+#define STEPCONFIG_MODE(val)	FIELD_PREP(GENMASK(1, 0), (val))
 #define STEPCONFIG_MODE_SWCNT	STEPCONFIG_MODE(1)
 #define STEPCONFIG_MODE_HWSYNC	STEPCONFIG_MODE(2)
-#define STEPCONFIG_AVG_MASK	(7 << 2)
-#define STEPCONFIG_AVG(val)	((val) << 2)
+#define STEPCONFIG_AVG(val)	FIELD_PREP(GENMASK(4, 2), (val))
 #define STEPCONFIG_AVG_16	STEPCONFIG_AVG(4)
 #define STEPCONFIG_XPP		BIT(5)
 #define STEPCONFIG_XNN		BIT(6)
@@ -78,70 +63,67 @@
 #define STEPCONFIG_YNN		BIT(8)
 #define STEPCONFIG_XNP		BIT(9)
 #define STEPCONFIG_YPN		BIT(10)
-#define STEPCONFIG_RFP(val)	((val) << 12)
-#define STEPCONFIG_RFP_VREFP	(0x3 << 12)
-#define STEPCONFIG_INM_MASK	(0xF << 15)
-#define STEPCONFIG_INM(val)	((val) << 15)
+#define STEPCONFIG_RFP(val)	FIELD_PREP(GENMASK(13, 12), (val))
+#define STEPCONFIG_RFP_VREFP	STEPCONFIG_RFP(3)
+#define STEPCONFIG_INM(val)	FIELD_PREP(GENMASK(18, 15), (val))
 #define STEPCONFIG_INM_ADCREFM	STEPCONFIG_INM(8)
-#define STEPCONFIG_INP_MASK	(0xF << 19)
-#define STEPCONFIG_INP(val)	((val) << 19)
+#define STEPCONFIG_INP(val)	FIELD_PREP(GENMASK(22, 19), (val))
 #define STEPCONFIG_INP_AN4	STEPCONFIG_INP(4)
 #define STEPCONFIG_INP_ADCREFM	STEPCONFIG_INP(8)
 #define STEPCONFIG_FIFO1	BIT(26)
-#define STEPCONFIG_RFM(val)	((val) << 23)
-#define STEPCONFIG_RFM_VREFN	(0x3 << 23)
+#define STEPCONFIG_RFM(val)	FIELD_PREP(GENMASK(24, 23), (val))
+#define STEPCONFIG_RFM_VREFN	STEPCONFIG_RFM(3)
 
 /* Delay register */
-#define STEPDELAY_OPEN_MASK	(0x3FFFF << 0)
-#define STEPDELAY_OPEN(val)	((val) << 0)
+#define STEPDELAY_OPEN(val)	FIELD_PREP(GENMASK(17, 0), (val))
 #define STEPCONFIG_OPENDLY	STEPDELAY_OPEN(0x098)
-#define STEPDELAY_SAMPLE_MASK	(0xFF << 24)
-#define STEPDELAY_SAMPLE(val)	((val) << 24)
+#define STEPCONFIG_MAX_OPENDLY	GENMASK(17, 0)
+#define STEPDELAY_SAMPLE(val)	FIELD_PREP(GENMASK(31, 24), (val))
 #define STEPCONFIG_SAMPLEDLY	STEPDELAY_SAMPLE(0)
+#define STEPCONFIG_MAX_SAMPLE	GENMASK(7, 0)
 
 /* Charge Config */
-#define STEPCHARGE_RFP_MASK	(7 << 12)
-#define STEPCHARGE_RFP(val)	((val) << 12)
+#define STEPCHARGE_RFP(val)	FIELD_PREP(GENMASK(14, 12), (val))
 #define STEPCHARGE_RFP_XPUL	STEPCHARGE_RFP(1)
-#define STEPCHARGE_INM_MASK	(0xF << 15)
-#define STEPCHARGE_INM(val)	((val) << 15)
+#define STEPCHARGE_INM(val)	FIELD_PREP(GENMASK(18, 15), (val))
 #define STEPCHARGE_INM_AN1	STEPCHARGE_INM(1)
-#define STEPCHARGE_INP_MASK	(0xF << 19)
-#define STEPCHARGE_INP(val)	((val) << 19)
-#define STEPCHARGE_RFM_MASK	(3 << 23)
-#define STEPCHARGE_RFM(val)	((val) << 23)
+#define STEPCHARGE_INP(val)	FIELD_PREP(GENMASK(22, 19), (val))
+#define STEPCHARGE_RFM(val)	FIELD_PREP(GENMASK(24, 23), (val))
 #define STEPCHARGE_RFM_XNUR	STEPCHARGE_RFM(1)
 
 /* Charge delay */
-#define CHARGEDLY_OPEN_MASK	(0x3FFFF << 0)
-#define CHARGEDLY_OPEN(val)	((val) << 0)
+#define CHARGEDLY_OPEN(val)	FIELD_PREP(GENMASK(17, 0), (val))
 #define CHARGEDLY_OPENDLY	CHARGEDLY_OPEN(0x400)
 
 /* Control register */
-#define CNTRLREG_TSCSSENB	BIT(0)
+#define CNTRLREG_SSENB		BIT(0)
 #define CNTRLREG_STEPID		BIT(1)
-#define CNTRLREG_STEPCONFIGWRT	BIT(2)
+#define CNTRLREG_TSC_STEPCONFIGWRT BIT(2)
 #define CNTRLREG_POWERDOWN	BIT(4)
-#define CNTRLREG_AFE_CTRL_MASK	(3 << 5)
-#define CNTRLREG_AFE_CTRL(val)	((val) << 5)
-#define CNTRLREG_4WIRE		CNTRLREG_AFE_CTRL(1)
-#define CNTRLREG_5WIRE		CNTRLREG_AFE_CTRL(2)
-#define CNTRLREG_8WIRE		CNTRLREG_AFE_CTRL(3)
-#define CNTRLREG_TSCENB		BIT(7)
+#define CNTRLREG_TSC_AFE_CTRL(val) FIELD_PREP(GENMASK(6, 5), (val))
+#define CNTRLREG_TSC_4WIRE	CNTRLREG_TSC_AFE_CTRL(1)
+#define CNTRLREG_TSC_5WIRE	CNTRLREG_TSC_AFE_CTRL(2)
+#define CNTRLREG_TSC_ENB	BIT(7)
+
+/*Control registers bitfields  for MAGADC IP */
+#define CNTRLREG_MAGADCENB      BIT(0)
+#define CNTRLREG_MAG_PREAMP_PWRDOWN BIT(5)
+#define CNTRLREG_MAG_PREAMP_BYPASS  BIT(6)
 
 /* FIFO READ Register */
-#define FIFOREAD_DATA_MASK (0xfff << 0)
-#define FIFOREAD_CHNLID_MASK (0xf << 16)
+#define FIFOREAD_DATA_MASK	GENMASK(11, 0)
+#define FIFOREAD_CHNLID_MASK	GENMASK(19, 16)
 
 /* DMA ENABLE/CLEAR Register */
 #define DMA_FIFO0		BIT(0)
 #define DMA_FIFO1		BIT(1)
 
 /* Sequencer Status */
-#define SEQ_STATUS BIT(5)
+#define SEQ_STATUS		BIT(5)
 #define CHARGE_STEP		0x11
 
-#define ADC_CLK			3000000
+#define TSC_ADC_CLK		(3 * HZ_PER_MHZ)
+#define MAG_ADC_CLK		(13 * HZ_PER_MHZ)
 #define TOTAL_STEPS		16
 #define TOTAL_CHANNELS		8
 #define FIFO1_THRESHOLD		19
@@ -158,21 +140,27 @@
  *
  * max processing time: 266431 * 308ns = 83ms(approx)
  */
-#define IDLE_TIMEOUT 83 /* milliseconds */
+#define IDLE_TIMEOUT_MS		83 /* milliseconds */
 
 #define TSCADC_CELLS		2
 
+struct ti_tscadc_data {
+	char *adc_feature_name;
+	char *adc_feature_compatible;
+	char *secondary_feature_name;
+	char *secondary_feature_compatible;
+	unsigned int target_clk_rate;
+};
+
 struct ti_tscadc_dev {
 	struct device *dev;
 	struct regmap *regmap;
 	void __iomem *tscadc_base;
 	phys_addr_t tscadc_phys_base;
+	const struct ti_tscadc_data *data;
 	int irq;
-	int used_cells;	/* 1-2 */
-	int tsc_wires;
-	int tsc_cell;	/* -1 if not used */
-	int adc_cell;	/* -1 if not used */
 	struct mfd_cell cells[TSCADC_CELLS];
+	u32 ctrl;
 	u32 reg_se_cache;
 	bool adc_waiting;
 	bool adc_in_use;
@@ -194,6 +182,12 @@ static inline struct ti_tscadc_dev *ti_tscadc_dev_get(struct platform_device *p)
 	return *tscadc_dev;
 }
 
+static inline bool ti_adc_with_touchscreen(struct ti_tscadc_dev *tscadc)
+{
+	return of_device_is_compatible(tscadc->dev->of_node,
+				       "ti,am3359-tscadc");
+}
+
 void am335x_tsc_se_set_cache(struct ti_tscadc_dev *tsadc, u32 val);
 void am335x_tsc_se_set_once(struct ti_tscadc_dev *tsadc, u32 val);
 void am335x_tsc_se_clr(struct ti_tscadc_dev *tsadc, u32 val);
diff --git a/include/linux/mfd/tps65912.h b/include/linux/mfd/tps65912.h
index 7943e413deae..8a61386cb8c1 100644
--- a/include/linux/mfd/tps65912.h
+++ b/include/linux/mfd/tps65912.h
@@ -322,6 +322,6 @@ struct tps65912 {
 extern const struct regmap_config tps65912_regmap_config;
 
 int tps65912_device_init(struct tps65912 *tps);
-int tps65912_device_exit(struct tps65912 *tps);
+void tps65912_device_exit(struct tps65912 *tps);
 
 #endif /*  __LINUX_MFD_TPS65912_H */
diff --git a/include/linux/mfd/tps68470.h b/include/linux/mfd/tps68470.h
index ffe81127d91c..7807fa329db0 100644
--- a/include/linux/mfd/tps68470.h
+++ b/include/linux/mfd/tps68470.h
@@ -75,6 +75,17 @@
 #define TPS68470_CLKCFG1_MODE_A_MASK	GENMASK(1, 0)
 #define TPS68470_CLKCFG1_MODE_B_MASK	GENMASK(3, 2)
 
+#define TPS68470_CLKCFG2_DRV_STR_2MA	0x05
+#define TPS68470_PLL_OUTPUT_ENABLE	0x02
+#define TPS68470_CLK_SRC_XTAL		BIT(0)
+#define TPS68470_PLLSWR_DEFAULT		GENMASK(1, 0)
+#define TPS68470_OSC_EXT_CAP_DEFAULT	0x05
+
+#define TPS68470_OUTPUT_A_SHIFT		0x00
+#define TPS68470_OUTPUT_B_SHIFT		0x02
+#define TPS68470_CLK_SRC_SHIFT		GENMASK(2, 0)
+#define TPS68470_OSC_EXT_CAP_SHIFT	BIT(2)
+
 #define TPS68470_GPIO_CTL_REG_A(x)	(TPS68470_REG_GPCTL0A + (x) * 2)
 #define TPS68470_GPIO_CTL_REG_B(x)	(TPS68470_REG_GPCTL0B + (x) * 2)
 #define TPS68470_GPIO_MODE_MASK		GENMASK(1, 0)
diff --git a/include/linux/mfd/tps80031.h b/include/linux/mfd/tps80031.h
deleted file mode 100644
index 2c75c9c9318f..000000000000
--- a/include/linux/mfd/tps80031.h
+++ /dev/null
@@ -1,637 +0,0 @@
-/*
- * tps80031.h -- TI TPS80031 and TI TPS80032 PMIC driver.
- *
- * Copyright (c) 2012, NVIDIA Corporation.
- *
- * Author: Laxman Dewangan <ldewangan@nvidia.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
- * whether express or implied; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307, USA
- */
-
-#ifndef __LINUX_MFD_TPS80031_H
-#define __LINUX_MFD_TPS80031_H
-
-#include <linux/device.h>
-#include <linux/regmap.h>
-
-/* Pull-ups/Pull-downs */
-#define TPS80031_CFG_INPUT_PUPD1			0xF0
-#define TPS80031_CFG_INPUT_PUPD2			0xF1
-#define TPS80031_CFG_INPUT_PUPD3			0xF2
-#define TPS80031_CFG_INPUT_PUPD4			0xF3
-#define TPS80031_CFG_LDO_PD1				0xF4
-#define TPS80031_CFG_LDO_PD2				0xF5
-#define TPS80031_CFG_SMPS_PD				0xF6
-
-/* Real Time Clock */
-#define TPS80031_SECONDS_REG				0x00
-#define TPS80031_MINUTES_REG				0x01
-#define TPS80031_HOURS_REG				0x02
-#define TPS80031_DAYS_REG				0x03
-#define TPS80031_MONTHS_REG				0x04
-#define TPS80031_YEARS_REG				0x05
-#define TPS80031_WEEKS_REG				0x06
-#define TPS80031_ALARM_SECONDS_REG			0x08
-#define TPS80031_ALARM_MINUTES_REG			0x09
-#define TPS80031_ALARM_HOURS_REG			0x0A
-#define TPS80031_ALARM_DAYS_REG				0x0B
-#define TPS80031_ALARM_MONTHS_REG			0x0C
-#define TPS80031_ALARM_YEARS_REG			0x0D
-#define TPS80031_RTC_CTRL_REG				0x10
-#define TPS80031_RTC_STATUS_REG				0x11
-#define TPS80031_RTC_INTERRUPTS_REG			0x12
-#define TPS80031_RTC_COMP_LSB_REG			0x13
-#define TPS80031_RTC_COMP_MSB_REG			0x14
-#define TPS80031_RTC_RESET_STATUS_REG			0x16
-
-/*PMC Master Module */
-#define TPS80031_PHOENIX_START_CONDITION		0x1F
-#define TPS80031_PHOENIX_MSK_TRANSITION			0x20
-#define TPS80031_STS_HW_CONDITIONS			0x21
-#define TPS80031_PHOENIX_LAST_TURNOFF_STS		0x22
-#define TPS80031_VSYSMIN_LO_THRESHOLD			0x23
-#define TPS80031_VSYSMIN_HI_THRESHOLD			0x24
-#define TPS80031_PHOENIX_DEV_ON				0x25
-#define TPS80031_STS_PWR_GRP_STATE			0x27
-#define TPS80031_PH_CFG_VSYSLOW				0x28
-#define TPS80031_PH_STS_BOOT				0x29
-#define TPS80031_PHOENIX_SENS_TRANSITION		0x2A
-#define TPS80031_PHOENIX_SEQ_CFG			0x2B
-#define TPS80031_PRIMARY_WATCHDOG_CFG			0X2C
-#define TPS80031_KEY_PRESS_DUR_CFG			0X2D
-#define TPS80031_SMPS_LDO_SHORT_STS			0x2E
-
-/* PMC Slave Module - Broadcast */
-#define TPS80031_BROADCAST_ADDR_ALL			0x31
-#define TPS80031_BROADCAST_ADDR_REF			0x32
-#define TPS80031_BROADCAST_ADDR_PROV			0x33
-#define TPS80031_BROADCAST_ADDR_CLK_RST			0x34
-
-/* PMC Slave Module  SMPS Regulators */
-#define TPS80031_SMPS4_CFG_TRANS			0x41
-#define TPS80031_SMPS4_CFG_STATE			0x42
-#define TPS80031_SMPS4_CFG_VOLTAGE			0x44
-#define TPS80031_VIO_CFG_TRANS				0x47
-#define TPS80031_VIO_CFG_STATE				0x48
-#define TPS80031_VIO_CFG_FORCE				0x49
-#define TPS80031_VIO_CFG_VOLTAGE			0x4A
-#define TPS80031_VIO_CFG_STEP				0x48
-#define TPS80031_SMPS1_CFG_TRANS			0x53
-#define TPS80031_SMPS1_CFG_STATE			0x54
-#define TPS80031_SMPS1_CFG_FORCE			0x55
-#define TPS80031_SMPS1_CFG_VOLTAGE			0x56
-#define TPS80031_SMPS1_CFG_STEP				0x57
-#define TPS80031_SMPS2_CFG_TRANS			0x59
-#define TPS80031_SMPS2_CFG_STATE			0x5A
-#define TPS80031_SMPS2_CFG_FORCE			0x5B
-#define TPS80031_SMPS2_CFG_VOLTAGE			0x5C
-#define TPS80031_SMPS2_CFG_STEP				0x5D
-#define TPS80031_SMPS3_CFG_TRANS			0x65
-#define TPS80031_SMPS3_CFG_STATE			0x66
-#define TPS80031_SMPS3_CFG_VOLTAGE			0x68
-
-/* PMC Slave Module  LDO Regulators */
-#define TPS80031_VANA_CFG_TRANS				0x81
-#define TPS80031_VANA_CFG_STATE				0x82
-#define TPS80031_VANA_CFG_VOLTAGE			0x83
-#define TPS80031_LDO2_CFG_TRANS				0x85
-#define TPS80031_LDO2_CFG_STATE				0x86
-#define TPS80031_LDO2_CFG_VOLTAGE			0x87
-#define TPS80031_LDO4_CFG_TRANS				0x89
-#define TPS80031_LDO4_CFG_STATE				0x8A
-#define TPS80031_LDO4_CFG_VOLTAGE			0x8B
-#define TPS80031_LDO3_CFG_TRANS				0x8D
-#define TPS80031_LDO3_CFG_STATE				0x8E
-#define TPS80031_LDO3_CFG_VOLTAGE			0x8F
-#define TPS80031_LDO6_CFG_TRANS				0x91
-#define TPS80031_LDO6_CFG_STATE				0x92
-#define TPS80031_LDO6_CFG_VOLTAGE			0x93
-#define TPS80031_LDOLN_CFG_TRANS			0x95
-#define TPS80031_LDOLN_CFG_STATE			0x96
-#define TPS80031_LDOLN_CFG_VOLTAGE			0x97
-#define TPS80031_LDO5_CFG_TRANS				0x99
-#define TPS80031_LDO5_CFG_STATE				0x9A
-#define TPS80031_LDO5_CFG_VOLTAGE			0x9B
-#define TPS80031_LDO1_CFG_TRANS				0x9D
-#define TPS80031_LDO1_CFG_STATE				0x9E
-#define TPS80031_LDO1_CFG_VOLTAGE			0x9F
-#define TPS80031_LDOUSB_CFG_TRANS			0xA1
-#define TPS80031_LDOUSB_CFG_STATE			0xA2
-#define TPS80031_LDOUSB_CFG_VOLTAGE			0xA3
-#define TPS80031_LDO7_CFG_TRANS				0xA5
-#define TPS80031_LDO7_CFG_STATE				0xA6
-#define TPS80031_LDO7_CFG_VOLTAGE			0xA7
-
-/* PMC Slave Module  External Control */
-#define TPS80031_REGEN1_CFG_TRANS			0xAE
-#define TPS80031_REGEN1_CFG_STATE			0xAF
-#define TPS80031_REGEN2_CFG_TRANS			0xB1
-#define TPS80031_REGEN2_CFG_STATE			0xB2
-#define TPS80031_SYSEN_CFG_TRANS			0xB4
-#define TPS80031_SYSEN_CFG_STATE			0xB5
-
-/* PMC Slave Module  Internal Control */
-#define TPS80031_NRESPWRON_CFG_TRANS			0xB7
-#define TPS80031_NRESPWRON_CFG_STATE			0xB8
-#define TPS80031_CLK32KAO_CFG_TRANS			0xBA
-#define TPS80031_CLK32KAO_CFG_STATE			0xBB
-#define TPS80031_CLK32KG_CFG_TRANS			0xBD
-#define TPS80031_CLK32KG_CFG_STATE			0xBE
-#define TPS80031_CLK32KAUDIO_CFG_TRANS			0xC0
-#define TPS80031_CLK32KAUDIO_CFG_STATE			0xC1
-#define TPS80031_VRTC_CFG_TRANS				0xC3
-#define TPS80031_VRTC_CFG_STATE				0xC4
-#define TPS80031_BIAS_CFG_TRANS				0xC6
-#define TPS80031_BIAS_CFG_STATE				0xC7
-#define TPS80031_VSYSMIN_HI_CFG_TRANS			0xC9
-#define TPS80031_VSYSMIN_HI_CFG_STATE			0xCA
-#define TPS80031_RC6MHZ_CFG_TRANS			0xCC
-#define TPS80031_RC6MHZ_CFG_STATE			0xCD
-#define TPS80031_TMP_CFG_TRANS				0xCF
-#define TPS80031_TMP_CFG_STATE				0xD0
-
-/* PMC Slave Module  resources assignment */
-#define TPS80031_PREQ1_RES_ASS_A			0xD7
-#define TPS80031_PREQ1_RES_ASS_B			0xD8
-#define TPS80031_PREQ1_RES_ASS_C			0xD9
-#define TPS80031_PREQ2_RES_ASS_A			0xDA
-#define TPS80031_PREQ2_RES_ASS_B			0xDB
-#define TPS80031_PREQ2_RES_ASS_C			0xDC
-#define TPS80031_PREQ3_RES_ASS_A			0xDD
-#define TPS80031_PREQ3_RES_ASS_B			0xDE
-#define TPS80031_PREQ3_RES_ASS_C			0xDF
-
-/* PMC Slave Module  Miscellaneous */
-#define TPS80031_SMPS_OFFSET				0xE0
-#define TPS80031_SMPS_MULT				0xE3
-#define TPS80031_MISC1					0xE4
-#define TPS80031_MISC2					0xE5
-#define TPS80031_BBSPOR_CFG				0xE6
-#define TPS80031_TMP_CFG				0xE7
-
-/* Battery Charging Controller and Indicator LED */
-#define TPS80031_CONTROLLER_CTRL2			0xDA
-#define TPS80031_CONTROLLER_VSEL_COMP			0xDB
-#define TPS80031_CHARGERUSB_VSYSREG			0xDC
-#define TPS80031_CHARGERUSB_VICHRG_PC			0xDD
-#define TPS80031_LINEAR_CHRG_STS			0xDE
-#define TPS80031_CONTROLLER_INT_MASK			0xE0
-#define TPS80031_CONTROLLER_CTRL1			0xE1
-#define TPS80031_CONTROLLER_WDG				0xE2
-#define TPS80031_CONTROLLER_STAT1			0xE3
-#define TPS80031_CHARGERUSB_INT_STATUS			0xE4
-#define TPS80031_CHARGERUSB_INT_MASK			0xE5
-#define TPS80031_CHARGERUSB_STATUS_INT1			0xE6
-#define TPS80031_CHARGERUSB_STATUS_INT2			0xE7
-#define TPS80031_CHARGERUSB_CTRL1			0xE8
-#define TPS80031_CHARGERUSB_CTRL2			0xE9
-#define TPS80031_CHARGERUSB_CTRL3			0xEA
-#define TPS80031_CHARGERUSB_STAT1			0xEB
-#define TPS80031_CHARGERUSB_VOREG			0xEC
-#define TPS80031_CHARGERUSB_VICHRG			0xED
-#define TPS80031_CHARGERUSB_CINLIMIT			0xEE
-#define TPS80031_CHARGERUSB_CTRLLIMIT1			0xEF
-#define TPS80031_CHARGERUSB_CTRLLIMIT2			0xF0
-#define TPS80031_LED_PWM_CTRL1				0xF4
-#define TPS80031_LED_PWM_CTRL2				0xF5
-
-/* USB On-The-Go  */
-#define TPS80031_BACKUP_REG				0xFA
-#define TPS80031_USB_VENDOR_ID_LSB			0x00
-#define TPS80031_USB_VENDOR_ID_MSB			0x01
-#define TPS80031_USB_PRODUCT_ID_LSB			0x02
-#define TPS80031_USB_PRODUCT_ID_MSB			0x03
-#define TPS80031_USB_VBUS_CTRL_SET			0x04
-#define TPS80031_USB_VBUS_CTRL_CLR			0x05
-#define TPS80031_USB_ID_CTRL_SET			0x06
-#define TPS80031_USB_ID_CTRL_CLR			0x07
-#define TPS80031_USB_VBUS_INT_SRC			0x08
-#define TPS80031_USB_VBUS_INT_LATCH_SET			0x09
-#define TPS80031_USB_VBUS_INT_LATCH_CLR			0x0A
-#define TPS80031_USB_VBUS_INT_EN_LO_SET			0x0B
-#define TPS80031_USB_VBUS_INT_EN_LO_CLR			0x0C
-#define TPS80031_USB_VBUS_INT_EN_HI_SET			0x0D
-#define TPS80031_USB_VBUS_INT_EN_HI_CLR			0x0E
-#define TPS80031_USB_ID_INT_SRC				0x0F
-#define TPS80031_USB_ID_INT_LATCH_SET			0x10
-#define TPS80031_USB_ID_INT_LATCH_CLR			0x11
-#define TPS80031_USB_ID_INT_EN_LO_SET			0x12
-#define TPS80031_USB_ID_INT_EN_LO_CLR			0x13
-#define TPS80031_USB_ID_INT_EN_HI_SET			0x14
-#define TPS80031_USB_ID_INT_EN_HI_CLR			0x15
-#define TPS80031_USB_OTG_ADP_CTRL			0x16
-#define TPS80031_USB_OTG_ADP_HIGH			0x17
-#define TPS80031_USB_OTG_ADP_LOW			0x18
-#define TPS80031_USB_OTG_ADP_RISE			0x19
-#define TPS80031_USB_OTG_REVISION			0x1A
-
-/* Gas Gauge */
-#define TPS80031_FG_REG_00				0xC0
-#define TPS80031_FG_REG_01				0xC1
-#define TPS80031_FG_REG_02				0xC2
-#define TPS80031_FG_REG_03				0xC3
-#define TPS80031_FG_REG_04				0xC4
-#define TPS80031_FG_REG_05				0xC5
-#define TPS80031_FG_REG_06				0xC6
-#define TPS80031_FG_REG_07				0xC7
-#define TPS80031_FG_REG_08				0xC8
-#define TPS80031_FG_REG_09				0xC9
-#define TPS80031_FG_REG_10				0xCA
-#define TPS80031_FG_REG_11				0xCB
-
-/* General Purpose ADC */
-#define TPS80031_GPADC_CTRL				0x2E
-#define TPS80031_GPADC_CTRL2				0x2F
-#define TPS80031_RTSELECT_LSB				0x32
-#define TPS80031_RTSELECT_ISB				0x33
-#define TPS80031_RTSELECT_MSB				0x34
-#define TPS80031_GPSELECT_ISB				0x35
-#define TPS80031_CTRL_P1				0x36
-#define TPS80031_RTCH0_LSB				0x37
-#define TPS80031_RTCH0_MSB				0x38
-#define TPS80031_RTCH1_LSB				0x39
-#define TPS80031_RTCH1_MSB				0x3A
-#define TPS80031_GPCH0_LSB				0x3B
-#define TPS80031_GPCH0_MSB				0x3C
-
-/* SIM, MMC and Battery Detection */
-#define TPS80031_SIMDEBOUNCING				0xEB
-#define TPS80031_SIMCTRL				0xEC
-#define TPS80031_MMCDEBOUNCING				0xED
-#define TPS80031_MMCCTRL				0xEE
-#define TPS80031_BATDEBOUNCING				0xEF
-
-/* Vibrator Driver and PWMs */
-#define TPS80031_VIBCTRL				0x9B
-#define TPS80031_VIBMODE				0x9C
-#define TPS80031_PWM1ON					0xBA
-#define TPS80031_PWM1OFF				0xBB
-#define TPS80031_PWM2ON					0xBD
-#define TPS80031_PWM2OFF				0xBE
-
-/* Control Interface */
-#define TPS80031_INT_STS_A				0xD0
-#define TPS80031_INT_STS_B				0xD1
-#define TPS80031_INT_STS_C				0xD2
-#define TPS80031_INT_MSK_LINE_A				0xD3
-#define TPS80031_INT_MSK_LINE_B				0xD4
-#define TPS80031_INT_MSK_LINE_C				0xD5
-#define TPS80031_INT_MSK_STS_A				0xD6
-#define TPS80031_INT_MSK_STS_B				0xD7
-#define TPS80031_INT_MSK_STS_C				0xD8
-#define TPS80031_TOGGLE1				0x90
-#define TPS80031_TOGGLE2				0x91
-#define TPS80031_TOGGLE3				0x92
-#define TPS80031_PWDNSTATUS1				0x93
-#define TPS80031_PWDNSTATUS2				0x94
-#define TPS80031_VALIDITY0				0x17
-#define TPS80031_VALIDITY1				0x18
-#define TPS80031_VALIDITY2				0x19
-#define TPS80031_VALIDITY3				0x1A
-#define TPS80031_VALIDITY4				0x1B
-#define TPS80031_VALIDITY5				0x1C
-#define TPS80031_VALIDITY6				0x1D
-#define TPS80031_VALIDITY7				0x1E
-
-/* Version number related register */
-#define TPS80031_JTAGVERNUM				0x87
-#define TPS80031_EPROM_REV				0xDF
-
-/* GPADC Trimming Bits. */
-#define TPS80031_GPADC_TRIM0				0xCC
-#define TPS80031_GPADC_TRIM1				0xCD
-#define TPS80031_GPADC_TRIM2				0xCE
-#define TPS80031_GPADC_TRIM3				0xCF
-#define TPS80031_GPADC_TRIM4				0xD0
-#define TPS80031_GPADC_TRIM5				0xD1
-#define TPS80031_GPADC_TRIM6				0xD2
-#define TPS80031_GPADC_TRIM7				0xD3
-#define TPS80031_GPADC_TRIM8				0xD4
-#define TPS80031_GPADC_TRIM9				0xD5
-#define TPS80031_GPADC_TRIM10				0xD6
-#define TPS80031_GPADC_TRIM11				0xD7
-#define TPS80031_GPADC_TRIM12				0xD8
-#define TPS80031_GPADC_TRIM13				0xD9
-#define TPS80031_GPADC_TRIM14				0xDA
-#define TPS80031_GPADC_TRIM15				0xDB
-#define TPS80031_GPADC_TRIM16				0xDC
-#define TPS80031_GPADC_TRIM17				0xDD
-#define TPS80031_GPADC_TRIM18				0xDE
-
-/* TPS80031_CONTROLLER_STAT1 bit fields */
-#define TPS80031_CONTROLLER_STAT1_BAT_TEMP		0
-#define TPS80031_CONTROLLER_STAT1_BAT_REMOVED		1
-#define TPS80031_CONTROLLER_STAT1_VBUS_DET		2
-#define TPS80031_CONTROLLER_STAT1_VAC_DET		3
-#define TPS80031_CONTROLLER_STAT1_FAULT_WDG		4
-#define TPS80031_CONTROLLER_STAT1_LINCH_GATED		6
-/* TPS80031_CONTROLLER_INT_MASK bit filed */
-#define TPS80031_CONTROLLER_INT_MASK_MVAC_DET		0
-#define TPS80031_CONTROLLER_INT_MASK_MVBUS_DET		1
-#define TPS80031_CONTROLLER_INT_MASK_MBAT_TEMP		2
-#define TPS80031_CONTROLLER_INT_MASK_MFAULT_WDG		3
-#define TPS80031_CONTROLLER_INT_MASK_MBAT_REMOVED	4
-#define TPS80031_CONTROLLER_INT_MASK_MLINCH_GATED	5
-
-#define TPS80031_CHARGE_CONTROL_SUB_INT_MASK		0x3F
-
-/* TPS80031_PHOENIX_DEV_ON bit field */
-#define TPS80031_DEVOFF					0x1
-
-#define TPS80031_EXT_CONTROL_CFG_TRANS			0
-#define TPS80031_EXT_CONTROL_CFG_STATE			1
-
-/* State register field */
-#define TPS80031_STATE_OFF				0x00
-#define TPS80031_STATE_ON				0x01
-#define TPS80031_STATE_MASK				0x03
-
-/* Trans register field */
-#define TPS80031_TRANS_ACTIVE_OFF			0x00
-#define TPS80031_TRANS_ACTIVE_ON			0x01
-#define TPS80031_TRANS_ACTIVE_MASK			0x03
-#define TPS80031_TRANS_SLEEP_OFF			0x00
-#define TPS80031_TRANS_SLEEP_ON				0x04
-#define TPS80031_TRANS_SLEEP_MASK			0x0C
-#define TPS80031_TRANS_OFF_OFF				0x00
-#define TPS80031_TRANS_OFF_ACTIVE			0x10
-#define TPS80031_TRANS_OFF_MASK				0x30
-
-#define TPS80031_EXT_PWR_REQ		(TPS80031_PWR_REQ_INPUT_PREQ1 | \
-					TPS80031_PWR_REQ_INPUT_PREQ2 | \
-					TPS80031_PWR_REQ_INPUT_PREQ3)
-
-/* TPS80031_BBSPOR_CFG bit field */
-#define TPS80031_BBSPOR_CHG_EN				0x8
-#define TPS80031_MAX_REGISTER				0xFF
-
-struct i2c_client;
-
-/* Supported chips */
-enum chips {
-	TPS80031 = 0x00000001,
-	TPS80032 = 0x00000002,
-};
-
-enum {
-	TPS80031_INT_PWRON,
-	TPS80031_INT_RPWRON,
-	TPS80031_INT_SYS_VLOW,
-	TPS80031_INT_RTC_ALARM,
-	TPS80031_INT_RTC_PERIOD,
-	TPS80031_INT_HOT_DIE,
-	TPS80031_INT_VXX_SHORT,
-	TPS80031_INT_SPDURATION,
-	TPS80031_INT_WATCHDOG,
-	TPS80031_INT_BAT,
-	TPS80031_INT_SIM,
-	TPS80031_INT_MMC,
-	TPS80031_INT_RES,
-	TPS80031_INT_GPADC_RT,
-	TPS80031_INT_GPADC_SW2_EOC,
-	TPS80031_INT_CC_AUTOCAL,
-	TPS80031_INT_ID_WKUP,
-	TPS80031_INT_VBUSS_WKUP,
-	TPS80031_INT_ID,
-	TPS80031_INT_VBUS,
-	TPS80031_INT_CHRG_CTRL,
-	TPS80031_INT_EXT_CHRG,
-	TPS80031_INT_INT_CHRG,
-	TPS80031_INT_RES2,
-	TPS80031_INT_BAT_TEMP_OVRANGE,
-	TPS80031_INT_BAT_REMOVED,
-	TPS80031_INT_VBUS_DET,
-	TPS80031_INT_VAC_DET,
-	TPS80031_INT_FAULT_WDG,
-	TPS80031_INT_LINCH_GATED,
-
-	/* Last interrupt id to get the end number */
-	TPS80031_INT_NR,
-};
-
-/* TPS80031 Slave IDs */
-#define TPS80031_NUM_SLAVES				4
-#define TPS80031_SLAVE_ID0				0
-#define TPS80031_SLAVE_ID1				1
-#define TPS80031_SLAVE_ID2				2
-#define TPS80031_SLAVE_ID3				3
-
-/* TPS80031 I2C addresses */
-#define TPS80031_I2C_ID0_ADDR				0x12
-#define TPS80031_I2C_ID1_ADDR				0x48
-#define TPS80031_I2C_ID2_ADDR				0x49
-#define TPS80031_I2C_ID3_ADDR				0x4A
-
-enum {
-	TPS80031_REGULATOR_VIO,
-	TPS80031_REGULATOR_SMPS1,
-	TPS80031_REGULATOR_SMPS2,
-	TPS80031_REGULATOR_SMPS3,
-	TPS80031_REGULATOR_SMPS4,
-	TPS80031_REGULATOR_VANA,
-	TPS80031_REGULATOR_LDO1,
-	TPS80031_REGULATOR_LDO2,
-	TPS80031_REGULATOR_LDO3,
-	TPS80031_REGULATOR_LDO4,
-	TPS80031_REGULATOR_LDO5,
-	TPS80031_REGULATOR_LDO6,
-	TPS80031_REGULATOR_LDO7,
-	TPS80031_REGULATOR_LDOLN,
-	TPS80031_REGULATOR_LDOUSB,
-	TPS80031_REGULATOR_VBUS,
-	TPS80031_REGULATOR_REGEN1,
-	TPS80031_REGULATOR_REGEN2,
-	TPS80031_REGULATOR_SYSEN,
-	TPS80031_REGULATOR_MAX,
-};
-
-/* Different configurations for the rails */
-enum {
-	/* USBLDO input selection */
-	TPS80031_USBLDO_INPUT_VSYS		= 0x00000001,
-	TPS80031_USBLDO_INPUT_PMID		= 0x00000002,
-
-	/* LDO3 output mode */
-	TPS80031_LDO3_OUTPUT_VIB		= 0x00000004,
-
-	/* VBUS configuration */
-	TPS80031_VBUS_DISCHRG_EN_PDN		= 0x00000004,
-	TPS80031_VBUS_SW_ONLY			= 0x00000008,
-	TPS80031_VBUS_SW_N_ID			= 0x00000010,
-};
-
-/* External controls requests */
-enum tps80031_ext_control {
-	TPS80031_PWR_REQ_INPUT_NONE		= 0x00000000,
-	TPS80031_PWR_REQ_INPUT_PREQ1		= 0x00000001,
-	TPS80031_PWR_REQ_INPUT_PREQ2		= 0x00000002,
-	TPS80031_PWR_REQ_INPUT_PREQ3		= 0x00000004,
-	TPS80031_PWR_OFF_ON_SLEEP		= 0x00000008,
-	TPS80031_PWR_ON_ON_SLEEP		= 0x00000010,
-};
-
-enum tps80031_pupd_pins {
-	TPS80031_PREQ1 = 0,
-	TPS80031_PREQ2A,
-	TPS80031_PREQ2B,
-	TPS80031_PREQ2C,
-	TPS80031_PREQ3,
-	TPS80031_NRES_WARM,
-	TPS80031_PWM_FORCE,
-	TPS80031_CHRG_EXT_CHRG_STATZ,
-	TPS80031_SIM,
-	TPS80031_MMC,
-	TPS80031_GPADC_START,
-	TPS80031_DVSI2C_SCL,
-	TPS80031_DVSI2C_SDA,
-	TPS80031_CTLI2C_SCL,
-	TPS80031_CTLI2C_SDA,
-};
-
-enum tps80031_pupd_settings {
-	TPS80031_PUPD_NORMAL,
-	TPS80031_PUPD_PULLDOWN,
-	TPS80031_PUPD_PULLUP,
-};
-
-struct tps80031 {
-	struct device		*dev;
-	unsigned long		chip_info;
-	int			es_version;
-	struct i2c_client	*clients[TPS80031_NUM_SLAVES];
-	struct regmap		*regmap[TPS80031_NUM_SLAVES];
-	struct regmap_irq_chip_data *irq_data;
-};
-
-struct tps80031_pupd_init_data {
-	int input_pin;
-	int setting;
-};
-
-/*
- * struct tps80031_regulator_platform_data - tps80031 regulator platform data.
- *
- * @reg_init_data: The regulator init data.
- * @ext_ctrl_flag: External control flag for sleep/power request control.
- * @config_flags: Configuration flag to configure the rails.
- *		  It should be ORed of config enums.
- */
-
-struct tps80031_regulator_platform_data {
-	struct regulator_init_data *reg_init_data;
-	unsigned int ext_ctrl_flag;
-	unsigned int config_flags;
-};
-
-struct tps80031_platform_data {
-	int irq_base;
-	bool use_power_off;
-	struct tps80031_pupd_init_data *pupd_init_data;
-	int pupd_init_data_size;
-	struct tps80031_regulator_platform_data
-			*regulator_pdata[TPS80031_REGULATOR_MAX];
-};
-
-static inline int tps80031_write(struct device *dev, int sid,
-		int reg, uint8_t val)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-
-	return regmap_write(tps80031->regmap[sid], reg, val);
-}
-
-static inline int tps80031_writes(struct device *dev, int sid, int reg,
-		int len, uint8_t *val)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-
-	return regmap_bulk_write(tps80031->regmap[sid], reg, val, len);
-}
-
-static inline int tps80031_read(struct device *dev, int sid,
-		int reg, uint8_t *val)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-	unsigned int ival;
-	int ret;
-
-	ret = regmap_read(tps80031->regmap[sid], reg, &ival);
-	if (ret < 0) {
-		dev_err(dev, "failed reading from reg 0x%02x\n", reg);
-		return ret;
-	}
-
-	*val = ival;
-	return ret;
-}
-
-static inline int tps80031_reads(struct device *dev, int sid,
-		int reg, int len, uint8_t *val)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-
-	return regmap_bulk_read(tps80031->regmap[sid], reg, val, len);
-}
-
-static inline int tps80031_set_bits(struct device *dev, int sid,
-		int reg, uint8_t bit_mask)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-
-	return regmap_update_bits(tps80031->regmap[sid], reg,
-				bit_mask, bit_mask);
-}
-
-static inline int tps80031_clr_bits(struct device *dev, int sid,
-		int reg, uint8_t bit_mask)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-
-	return regmap_update_bits(tps80031->regmap[sid], reg, bit_mask, 0);
-}
-
-static inline int tps80031_update(struct device *dev, int sid,
-		int reg, uint8_t val, uint8_t mask)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-
-	return regmap_update_bits(tps80031->regmap[sid], reg, mask, val);
-}
-
-static inline unsigned long tps80031_get_chip_info(struct device *dev)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-
-	return tps80031->chip_info;
-}
-
-static inline int tps80031_get_pmu_version(struct device *dev)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-
-	return tps80031->es_version;
-}
-
-static inline int tps80031_irq_get_virq(struct device *dev, int irq)
-{
-	struct tps80031 *tps80031 = dev_get_drvdata(dev);
-
-	return regmap_irq_get_virq(tps80031->irq_data, irq);
-}
-
-extern int tps80031_ext_power_req_config(struct device *dev,
-		unsigned long ext_ctrl_flag, int preq_bit,
-		int state_reg_add, int trans_reg_add);
-#endif /*__LINUX_MFD_TPS80031_H */
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index 723985879035..a5441ad33c74 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -664,6 +664,19 @@ int mhi_pm_suspend(struct mhi_controller *mhi_cntrl);
 int mhi_pm_resume(struct mhi_controller *mhi_cntrl);
 
 /**
+ * mhi_pm_resume_force - Force resume MHI from suspended state
+ * @mhi_cntrl: MHI controller
+ *
+ * Resume the device irrespective of its MHI state. As per the MHI spec, devices
+ * has to be in M3 state during resume. But some devices seem to be in a
+ * different MHI state other than M3 but they continue working fine if allowed.
+ * This API is intented to be used for such devices.
+ *
+ * Return: 0 if the resume succeeds, a negative error code otherwise
+ */
+int mhi_pm_resume_force(struct mhi_controller *mhi_cntrl);
+
+/**
  * mhi_download_rddm_image - Download ramdump image from device for
  *                           debugging purpose.
  * @mhi_cntrl: MHI controller
@@ -717,16 +730,27 @@ void mhi_device_put(struct mhi_device *mhi_dev);
 
 /**
  * mhi_prepare_for_transfer - Setup UL and DL channels for data transfer.
- *                            Allocate and initialize the channel context and
- *                            also issue the START channel command to both
- *                            channels. Channels can be started only if both
- *                            host and device execution environments match and
- *                            channels are in a DISABLED state.
  * @mhi_dev: Device associated with the channels
+ *
+ * Allocate and initialize the channel context and also issue the START channel
+ * command to both channels. Channels can be started only if both host and
+ * device execution environments match and channels are in a DISABLED state.
  */
 int mhi_prepare_for_transfer(struct mhi_device *mhi_dev);
 
 /**
+ * mhi_prepare_for_transfer_autoqueue - Setup UL and DL channels with auto queue
+ *                                      buffers for DL traffic
+ * @mhi_dev: Device associated with the channels
+ *
+ * Allocate and initialize the channel context and also issue the START channel
+ * command to both channels. Channels can be started only if both host and
+ * device execution environments match and channels are in a DISABLED state.
+ * The MHI core will automatically allocate and queue buffers for the DL traffic.
+ */
+int mhi_prepare_for_transfer_autoqueue(struct mhi_device *mhi_dev);
+
+/**
  * mhi_unprepare_from_transfer - Reset UL and DL channels for data transfer.
  *                               Issue the RESET channel command and let the
  *                               device clean-up the context so no incoming
diff --git a/include/linux/micrel_phy.h b/include/linux/micrel_phy.h
index 3d43c60b49fa..1f7c33b2f5a3 100644
--- a/include/linux/micrel_phy.h
+++ b/include/linux/micrel_phy.h
@@ -28,6 +28,7 @@
 #define PHY_ID_KSZ9031		0x00221620
 #define PHY_ID_KSZ9131		0x00221640
 #define PHY_ID_LAN8814		0x00221660
+#define PHY_ID_LAN8804		0x00221670
 
 #define PHY_ID_KSZ886X		0x00221430
 #define PHY_ID_KSZ8863		0x00221435
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index c8077e936691..90e75d5a54d6 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -19,24 +19,7 @@ struct migration_target_control;
  */
 #define MIGRATEPAGE_SUCCESS		0
 
-/*
- * Keep sync with:
- * - macro MIGRATE_REASON in include/trace/events/migrate.h
- * - migrate_reason_names[MR_TYPES] in mm/debug.c
- */
-enum migrate_reason {
-	MR_COMPACTION,
-	MR_MEMORY_FAILURE,
-	MR_MEMORY_HOTPLUG,
-	MR_SYSCALL,		/* also applies to cpusets */
-	MR_MEMPOLICY_MBIND,
-	MR_NUMA_MISPLACED,
-	MR_CONTIG_RANGE,
-	MR_LONGTERM_PIN,
-	MR_DEMOTION,
-	MR_TYPES
-};
-
+/* Defined in mm/debug.c: */
 extern const char *migrate_reason_names[MR_TYPES];
 
 #ifdef CONFIG_MIGRATION
@@ -57,8 +40,24 @@ extern int migrate_huge_page_move_mapping(struct address_space *mapping,
 				  struct page *newpage, struct page *page);
 extern int migrate_page_move_mapping(struct address_space *mapping,
 		struct page *newpage, struct page *page, int extra_count);
+void migration_entry_wait_on_locked(swp_entry_t entry, pte_t *ptep,
+				spinlock_t *ptl);
+void folio_migrate_flags(struct folio *newfolio, struct folio *folio);
+void folio_migrate_copy(struct folio *newfolio, struct folio *folio);
+int folio_migrate_mapping(struct address_space *mapping,
+		struct folio *newfolio, struct folio *folio, int extra_count);
+
+extern bool numa_demotion_enabled;
+extern void migrate_on_reclaim_init(void);
+#ifdef CONFIG_HOTPLUG_CPU
+extern void set_migration_target_nodes(void);
+#else
+static inline void set_migration_target_nodes(void) {}
+#endif
 #else
 
+static inline void set_migration_target_nodes(void) {}
+
 static inline void putback_movable_pages(struct list_head *l) {}
 static inline int migrate_pages(struct list_head *l, new_page_t new,
 		free_page_t free, unsigned long private, enum migrate_mode mode,
@@ -82,6 +81,8 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping,
 {
 	return -ENOSYS;
 }
+
+#define numa_demotion_enabled	false
 #endif /* CONFIG_MIGRATION */
 
 #ifdef CONFIG_COMPACTION
@@ -119,7 +120,6 @@ static inline int migrate_misplaced_page(struct page *page,
  */
 #define MIGRATE_PFN_VALID	(1UL << 0)
 #define MIGRATE_PFN_MIGRATE	(1UL << 1)
-#define MIGRATE_PFN_LOCKED	(1UL << 2)
 #define MIGRATE_PFN_WRITE	(1UL << 3)
 #define MIGRATE_PFN_SHIFT	6
 
diff --git a/include/linux/migrate_mode.h b/include/linux/migrate_mode.h
index 883c99249033..f37cc03f9369 100644
--- a/include/linux/migrate_mode.h
+++ b/include/linux/migrate_mode.h
@@ -19,4 +19,17 @@ enum migrate_mode {
 	MIGRATE_SYNC_NO_COPY,
 };
 
+enum migrate_reason {
+	MR_COMPACTION,
+	MR_MEMORY_FAILURE,
+	MR_MEMORY_HOTPLUG,
+	MR_SYSCALL,		/* also applies to cpusets */
+	MR_MEMPOLICY_MBIND,
+	MR_NUMA_MISPLACED,
+	MR_CONTIG_RANGE,
+	MR_LONGTERM_PIN,
+	MR_DEMOTION,
+	MR_TYPES
+};
+
 #endif		/* MIGRATE_MODE_H_INCLUDED */
diff --git a/include/linux/mii.h b/include/linux/mii.h
index 12ea29e04293..5ee13083cec7 100644
--- a/include/linux/mii.h
+++ b/include/linux/mii.h
@@ -355,56 +355,6 @@ static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
 }
 
 /**
- * mii_lpa_mod_linkmode_adv_sgmii
- * @lp_advertising: pointer to destination link mode.
- * @lpa: value of the MII_LPA register
- *
- * A small helper function that translates MII_LPA bits to
- * linkmode advertisement settings for SGMII.
- * Leaves other bits unchanged.
- */
-static inline void
-mii_lpa_mod_linkmode_lpa_sgmii(unsigned long *lp_advertising, u32 lpa)
-{
-	u32 speed_duplex = lpa & LPA_SGMII_DPX_SPD_MASK;
-
-	linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, lp_advertising,
-			 speed_duplex == LPA_SGMII_1000HALF);
-
-	linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, lp_advertising,
-			 speed_duplex == LPA_SGMII_1000FULL);
-
-	linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, lp_advertising,
-			 speed_duplex == LPA_SGMII_100HALF);
-
-	linkmode_mod_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, lp_advertising,
-			 speed_duplex == LPA_SGMII_100FULL);
-
-	linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, lp_advertising,
-			 speed_duplex == LPA_SGMII_10HALF);
-
-	linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, lp_advertising,
-			 speed_duplex == LPA_SGMII_10FULL);
-}
-
-/**
- * mii_lpa_to_linkmode_adv_sgmii
- * @advertising: pointer to destination link mode.
- * @lpa: value of the MII_LPA register
- *
- * A small helper function that translates MII_ADVERTISE bits
- * to linkmode advertisement settings when in SGMII mode.
- * Clears the old value of advertising.
- */
-static inline void mii_lpa_to_linkmode_lpa_sgmii(unsigned long *lp_advertising,
-						 u32 lpa)
-{
-	linkmode_zero(lp_advertising);
-
-	mii_lpa_mod_linkmode_lpa_sgmii(lp_advertising, lpa);
-}
-
-/**
  * mii_adv_mod_linkmode_adv_t
  * @advertising:pointer to destination link mode.
  * @adv: value of the MII_ADVERTISE register
diff --git a/include/linux/misc_cgroup.h b/include/linux/misc_cgroup.h
index da2367e2ac1e..c238207d1615 100644
--- a/include/linux/misc_cgroup.h
+++ b/include/linux/misc_cgroup.h
@@ -36,7 +36,7 @@ struct misc_cg;
 struct misc_res {
 	unsigned long max;
 	atomic_long_t usage;
-	bool failed;
+	atomic_long_t events;
 };
 
 /**
@@ -46,6 +46,10 @@ struct misc_res {
  */
 struct misc_cg {
 	struct cgroup_subsys_state css;
+
+	/* misc.events */
+	struct cgroup_file events_file;
+
 	struct misc_res res[MISC_CG_RES_TYPES];
 };
 
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 30bb59fe970c..6646634a0b9d 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -1436,7 +1436,7 @@ int mlx4_map_sw_to_hw_steering_id(struct mlx4_dev *dev,
 				  enum mlx4_net_trans_rule_id id);
 int mlx4_hw_rule_sz(struct mlx4_dev *dev, enum mlx4_net_trans_rule_id id);
 
-int mlx4_tunnel_steer_add(struct mlx4_dev *dev, unsigned char *addr,
+int mlx4_tunnel_steer_add(struct mlx4_dev *dev, const unsigned char *addr,
 			  int port, int qpn, u16 prio, u64 *reg_id);
 
 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port,
diff --git a/include/linux/mlx4/driver.h b/include/linux/mlx4/driver.h
index a858bcb6220b..1834c8fad12e 100644
--- a/include/linux/mlx4/driver.h
+++ b/include/linux/mlx4/driver.h
@@ -92,26 +92,4 @@ void *mlx4_get_protocol_dev(struct mlx4_dev *dev, enum mlx4_protocol proto, int
 
 struct devlink_port *mlx4_get_devlink_port(struct mlx4_dev *dev, int port);
 
-static inline u64 mlx4_mac_to_u64(u8 *addr)
-{
-	u64 mac = 0;
-	int i;
-
-	for (i = 0; i < ETH_ALEN; i++) {
-		mac <<= 8;
-		mac |= addr[i];
-	}
-	return mac;
-}
-
-static inline void mlx4_u64_to_mac(u8 *addr, u64 mac)
-{
-	int i;
-
-	for (i = ETH_ALEN; i > 0; i--) {
-		addr[i - 1] = mac & 0xFF;
-		mac >>= 8;
-	}
-}
-
 #endif /* MLX4_DRIVER_H */
diff --git a/include/linux/mlx5/cq.h b/include/linux/mlx5/cq.h
index 7bfb67363434..cb15308b5cb0 100644
--- a/include/linux/mlx5/cq.h
+++ b/include/linux/mlx5/cq.h
@@ -183,6 +183,8 @@ static inline void mlx5_cq_put(struct mlx5_core_cq *cq)
 		complete(&cq->free);
 }
 
+int mlx5_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
+		   u32 *in, int inlen, u32 *out, int outlen);
 int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
 			u32 *in, int inlen, u32 *out, int outlen);
 int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 66eaf0aa7f69..604b85dd770a 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -290,6 +290,7 @@ enum {
 	MLX5_UMR_INLINE			= (1 << 7),
 };
 
+#define MLX5_UMR_KLM_ALIGNMENT 4
 #define MLX5_UMR_MTT_ALIGNMENT 0x40
 #define MLX5_UMR_MTT_MASK      (MLX5_UMR_MTT_ALIGNMENT - 1)
 #define MLX5_UMR_MTT_MIN_CHUNK_SIZE MLX5_UMR_MTT_ALIGNMENT
@@ -541,19 +542,21 @@ struct mlx5_cmd_layout {
 	u8		status_own;
 };
 
-enum mlx5_fatal_assert_bit_offsets {
-	MLX5_RFR_OFFSET = 31,
+enum mlx5_rfr_severity_bit_offsets {
+	MLX5_RFR_BIT_OFFSET = 0x7,
 };
 
 struct health_buffer {
-	__be32		assert_var[5];
-	__be32		rsvd0[3];
+	__be32		assert_var[6];
+	__be32		rsvd0[2];
 	__be32		assert_exit_ptr;
 	__be32		assert_callra;
-	__be32		rsvd1[2];
+	__be32		rsvd1[1];
+	__be32		time;
 	__be32		fw_ver;
 	__be32		hw_id;
-	__be32		rfr;
+	u8		rfr_severity;
+	u8		rsvd2[3];
 	u8		irisc_index;
 	u8		synd;
 	__be16		ext_synd;
@@ -577,7 +580,9 @@ struct mlx5_init_seg {
 	__be32			rsvd1[120];
 	__be32			initializing;
 	struct health_buffer	health;
-	__be32			rsvd2[880];
+	__be32			rsvd2[878];
+	__be32			cmd_exec_to;
+	__be32			cmd_q_init_to;
 	__be32			internal_timer_h;
 	__be32			internal_timer_l;
 	__be32			rsvd3[2];
@@ -795,10 +800,23 @@ struct mlx5_cqe64 {
 	u8		tls_outer_l3_tunneled;
 	u8		rsvd0;
 	__be16		wqe_id;
-	u8		lro_tcppsh_abort_dupack;
-	u8		lro_min_ttl;
-	__be16		lro_tcp_win;
-	__be32		lro_ack_seq_num;
+	union {
+		struct {
+			u8	tcppsh_abort_dupack;
+			u8	min_ttl;
+			__be16	tcp_win;
+			__be32	ack_seq_num;
+		} lro;
+		struct {
+			u8	reserved0:1;
+			u8	match:1;
+			u8	flush:1;
+			u8	reserved3:5;
+			u8	header_size;
+			__be16	header_entry_index;
+			__be32	data_offset;
+		} shampo;
+	};
 	__be32		rss_hash_result;
 	u8		rss_hash_type;
 	u8		ml_path;
@@ -868,7 +886,7 @@ static inline u8 get_cqe_opcode(struct mlx5_cqe64 *cqe)
 
 static inline u8 get_cqe_lro_tcppsh(struct mlx5_cqe64 *cqe)
 {
-	return (cqe->lro_tcppsh_abort_dupack >> 6) & 1;
+	return (cqe->lro.tcppsh_abort_dupack >> 6) & 1;
 }
 
 static inline u8 get_cqe_l4_hdr_type(struct mlx5_cqe64 *cqe)
@@ -1099,6 +1117,7 @@ enum {
 	MLX5_MATCH_MISC_PARAMETERS_2	= 1 << 3,
 	MLX5_MATCH_MISC_PARAMETERS_3	= 1 << 4,
 	MLX5_MATCH_MISC_PARAMETERS_4	= 1 << 5,
+	MLX5_MATCH_MISC_PARAMETERS_5	= 1 << 6,
 };
 
 enum {
@@ -1182,7 +1201,9 @@ enum mlx5_cap_type {
 	MLX5_CAP_VDPA_EMULATION = 0x13,
 	MLX5_CAP_DEV_EVENT = 0x14,
 	MLX5_CAP_IPSEC,
+	MLX5_CAP_DEV_SHAMPO = 0x1d,
 	MLX5_CAP_GENERAL_2 = 0x20,
+	MLX5_CAP_PORT_SELECTION = 0x25,
 	/* NUM OF CAP Types */
 	MLX5_CAP_NUM
 };
@@ -1340,6 +1361,20 @@ enum mlx5_qcam_feature_groups {
 	MLX5_GET(e_switch_cap, \
 		 mdev->caps.hca[MLX5_CAP_ESWITCH]->max, cap)
 
+#define MLX5_CAP_PORT_SELECTION(mdev, cap) \
+	MLX5_GET(port_selection_cap, \
+		 mdev->caps.hca[MLX5_CAP_PORT_SELECTION]->cur, cap)
+
+#define MLX5_CAP_PORT_SELECTION_MAX(mdev, cap) \
+	MLX5_GET(port_selection_cap, \
+		 mdev->caps.hca[MLX5_CAP_PORT_SELECTION]->max, cap)
+
+#define MLX5_CAP_FLOWTABLE_PORT_SELECTION(mdev, cap) \
+	MLX5_CAP_PORT_SELECTION(mdev, flow_table_properties_port_selection.cap)
+
+#define MLX5_CAP_FLOWTABLE_PORT_SELECTION_MAX(mdev, cap) \
+	MLX5_CAP_PORT_SELECTION_MAX(mdev, flow_table_properties_port_selection.cap)
+
 #define MLX5_CAP_ODP(mdev, cap)\
 	MLX5_GET(odp_cap, mdev->caps.hca[MLX5_CAP_ODP]->cur, cap)
 
@@ -1412,6 +1447,9 @@ enum mlx5_qcam_feature_groups {
 #define MLX5_CAP_IPSEC(mdev, cap)\
 	MLX5_GET(ipsec_cap, (mdev)->caps.hca[MLX5_CAP_IPSEC]->cur, cap)
 
+#define MLX5_CAP_DEV_SHAMPO(mdev, cap)\
+	MLX5_GET(shampo_cap, mdev->caps.hca_cur[MLX5_CAP_DEV_SHAMPO], cap)
+
 enum {
 	MLX5_CMD_STAT_OK			= 0x0,
 	MLX5_CMD_STAT_INT_ERR			= 0x1,
@@ -1456,6 +1494,8 @@ static inline u16 mlx5_to_sw_pkey_sz(int pkey_sz)
 	return MLX5_MIN_PKEY_TABLE_SIZE << pkey_sz;
 }
 
+#define MLX5_RDMA_RX_NUM_COUNTERS_PRIOS 2
+#define MLX5_RDMA_TX_NUM_COUNTERS_PRIOS 1
 #define MLX5_BY_PASS_NUM_REGULAR_PRIOS 16
 #define MLX5_BY_PASS_NUM_DONT_TRAP_PRIOS 16
 #define MLX5_BY_PASS_NUM_MULTICAST_PRIOS 1
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index f17d2101af7a..9424503eb8d3 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -59,15 +59,13 @@
 
 #define MLX5_ADEV_NAME "mlx5_core"
 
+#define MLX5_IRQ_EQ_CTRL (U8_MAX)
+
 enum {
 	MLX5_BOARD_ID_LEN = 64,
 };
 
 enum {
-	/* one minute for the sake of bringup. Generally, commands must always
-	 * complete and we may need to increase this timeout value
-	 */
-	MLX5_CMD_TIMEOUT_MSEC	= 60 * 1000,
 	MLX5_CMD_WQ_MAX_NAME	= 32,
 };
 
@@ -136,6 +134,7 @@ enum {
 	MLX5_REG_MCIA		 = 0x9014,
 	MLX5_REG_MFRL		 = 0x9028,
 	MLX5_REG_MLCR		 = 0x902b,
+	MLX5_REG_MRTC		 = 0x902d,
 	MLX5_REG_MTRC_CAP	 = 0x9040,
 	MLX5_REG_MTRC_CONF	 = 0x9041,
 	MLX5_REG_MTRC_STDB	 = 0x9042,
@@ -154,6 +153,7 @@ enum {
 	MLX5_REG_MIRC		 = 0x9162,
 	MLX5_REG_SBCAM		 = 0xB01F,
 	MLX5_REG_RESOURCE_DUMP   = 0xC000,
+	MLX5_REG_DTOR            = 0xC00E,
 };
 
 enum mlx5_qpts_trust_state {
@@ -264,6 +264,14 @@ enum {
 struct mlx5_cmd_stats {
 	u64		sum;
 	u64		n;
+	/* number of times command failed */
+	u64		failed;
+	/* number of times command failed on bad status returned by FW */
+	u64		failed_mbox_status;
+	/* last command failed returned errno */
+	u32		last_failed_errno;
+	/* last bad status returned by FW */
+	u8		last_failed_mbox_status;
 	struct dentry  *root;
 	/* protect command average calculations */
 	spinlock_t	lock;
@@ -357,22 +365,6 @@ struct mlx5_core_sig_ctx {
 	u32			sigerr_count;
 };
 
-enum {
-	MLX5_MKEY_MR = 1,
-	MLX5_MKEY_MW,
-	MLX5_MKEY_INDIRECT_DEVX,
-};
-
-struct mlx5_core_mkey {
-	u64			iova;
-	u64			size;
-	u32			key;
-	u32			pd;
-	u32			type;
-	struct wait_queue_head wait;
-	refcount_t usecount;
-};
-
 #define MLX5_24BIT_MASK		((1 << 24) - 1)
 
 enum mlx5_res_type {
@@ -441,6 +433,7 @@ struct mlx5_core_health {
 	struct work_struct		report_work;
 	struct devlink_health_reporter *fw_reporter;
 	struct devlink_health_reporter *fw_fatal_reporter;
+	struct delayed_work		update_fw_log_ts_work;
 };
 
 struct mlx5_qp_table {
@@ -493,6 +486,10 @@ struct mlx5_fc_stats {
 	unsigned long next_query;
 	unsigned long sampling_interval; /* jiffies */
 	u32 *bulk_query_out;
+	int bulk_query_len;
+	size_t num_counters;
+	bool bulk_query_alloc_failed;
+	unsigned long next_bulk_query_alloc;
 	struct mlx5_fc_pool fc_pool;
 };
 
@@ -554,6 +551,15 @@ struct mlx5_adev {
 	int idx;
 };
 
+struct mlx5_debugfs_entries {
+	struct dentry *dbg_root;
+	struct dentry *qp_debugfs;
+	struct dentry *eq_debugfs;
+	struct dentry *cq_debugfs;
+	struct dentry *cmdif_debugfs;
+	struct dentry *pages_debugfs;
+};
+
 struct mlx5_ft_pool;
 struct mlx5_priv {
 	/* IRQ table valid only for real pci devices PF or VF */
@@ -564,21 +570,19 @@ struct mlx5_priv {
 	struct mlx5_nb          pg_nb;
 	struct workqueue_struct *pg_wq;
 	struct xarray           page_root_xa;
-	int			fw_pages;
+	u32			fw_pages;
 	atomic_t		reg_pages;
 	struct list_head	free_list;
-	int			vfs_pages;
-	int			host_pf_pages;
+	u32			vfs_pages;
+	u32			host_pf_pages;
+	u32			fw_pages_alloc_failed;
+	u32			give_pages_dropped;
+	u32			reclaim_pages_discard;
 
 	struct mlx5_core_health health;
 	struct list_head	traps;
 
-	/* start: qp staff */
-	struct dentry	       *qp_debugfs;
-	struct dentry	       *eq_debugfs;
-	struct dentry	       *cq_debugfs;
-	struct dentry	       *cmdif_debugfs;
-	/* end: qp staff */
+	struct mlx5_debugfs_entries dbg;
 
 	/* start: alloc staff */
 	/* protect buffer allocation according to numa node */
@@ -588,7 +592,6 @@ struct mlx5_priv {
 	struct mutex            pgdir_mutex;
 	struct list_head        pgdir_list;
 	/* end: alloc staff */
-	struct dentry	       *dbg_root;
 
 	struct list_head        ctx_list;
 	spinlock_t              ctx_lock;
@@ -653,7 +656,7 @@ struct mlx5e_resources {
 	struct mlx5e_hw_objs {
 		u32                        pdn;
 		struct mlx5_td             td;
-		struct mlx5_core_mkey      mkey;
+		u32			   mkey;
 		struct mlx5_sq_bfreg       bfreg;
 	} hw_objs;
 	struct devlink_port dl_port;
@@ -752,6 +755,7 @@ struct mlx5_core_dev {
 		u32 qcam[MLX5_ST_SZ_DW(qcam_reg)];
 		u8  embedded_cpu;
 	} caps;
+	struct mlx5_timeouts	*timeouts;
 	u64			sys_image_guid;
 	phys_addr_t		iseg_base;
 	struct mlx5_init_seg __iomem *iseg;
@@ -873,20 +877,10 @@ struct mlx5_hca_vport_context {
 	bool			grh_required;
 };
 
-static inline void *mlx5_buf_offset(struct mlx5_frag_buf *buf, int offset)
-{
-		return buf->frags->buf + offset;
-}
-
 #define STRUCT_FIELD(header, field) \
 	.struct_offset_bytes = offsetof(struct ib_unpacked_ ## header, field),      \
 	.struct_size_bytes   = sizeof((struct ib_unpacked_ ## header *)0)->field
 
-static inline struct mlx5_core_dev *pci2mlx5_core_dev(struct pci_dev *pdev)
-{
-	return pci_get_drvdata(pdev);
-}
-
 extern struct dentry *mlx5_debugfs_root;
 
 static inline u16 fw_rev_maj(struct mlx5_core_dev *dev)
@@ -975,6 +969,8 @@ typedef void (*mlx5_async_cbk_t)(int status, struct mlx5_async_work *context);
 struct mlx5_async_work {
 	struct mlx5_async_ctx *ctx;
 	mlx5_async_cbk_t user_callback;
+	u16 opcode; /* cmd opcode */
+	void *out; /* pointer to the cmd output buffer */
 };
 
 void mlx5_cmd_init_async_ctx(struct mlx5_core_dev *dev,
@@ -983,7 +979,9 @@ void mlx5_cmd_cleanup_async_ctx(struct mlx5_async_ctx *ctx);
 int mlx5_cmd_exec_cb(struct mlx5_async_ctx *ctx, void *in, int in_size,
 		     void *out, int out_size, mlx5_async_cbk_t callback,
 		     struct mlx5_async_work *work);
-
+void mlx5_cmd_out_err(struct mlx5_core_dev *dev, u16 opcode, u16 op_mod, void *out);
+int mlx5_cmd_do(struct mlx5_core_dev *dev, void *in, int in_size, void *out, int out_size);
+int mlx5_cmd_check(struct mlx5_core_dev *dev, int err, void *in, void *out);
 int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
 		  int out_size);
 
@@ -1001,12 +999,9 @@ int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
 
 int mlx5_cmd_exec_polling(struct mlx5_core_dev *dev, void *in, int in_size,
 			  void *out, int out_size);
-void mlx5_cmd_mbox_status(void *out, u8 *status, u32 *syndrome);
 bool mlx5_cmd_is_down(struct mlx5_core_dev *dev);
 
 int mlx5_core_get_caps(struct mlx5_core_dev *dev, enum mlx5_cap_type cap_type);
-int mlx5_cmd_alloc_uar(struct mlx5_core_dev *dev, u32 *uarn);
-int mlx5_cmd_free_uar(struct mlx5_core_dev *dev, u32 uarn);
 void mlx5_health_flush(struct mlx5_core_dev *dev);
 void mlx5_health_cleanup(struct mlx5_core_dev *dev);
 int mlx5_health_init(struct mlx5_core_dev *dev);
@@ -1014,9 +1009,6 @@ void mlx5_start_health_poll(struct mlx5_core_dev *dev);
 void mlx5_stop_health_poll(struct mlx5_core_dev *dev, bool disable_health);
 void mlx5_drain_health_wq(struct mlx5_core_dev *dev);
 void mlx5_trigger_health_work(struct mlx5_core_dev *dev);
-int mlx5_buf_alloc(struct mlx5_core_dev *dev,
-		   int size, struct mlx5_frag_buf *buf);
-void mlx5_buf_free(struct mlx5_core_dev *dev, struct mlx5_frag_buf *buf);
 int mlx5_frag_buf_alloc_node(struct mlx5_core_dev *dev, int size,
 			     struct mlx5_frag_buf *buf, int node);
 void mlx5_frag_buf_free(struct mlx5_core_dev *dev, struct mlx5_frag_buf *buf);
@@ -1024,19 +1016,19 @@ struct mlx5_cmd_mailbox *mlx5_alloc_cmd_mailbox_chain(struct mlx5_core_dev *dev,
 						      gfp_t flags, int npages);
 void mlx5_free_cmd_mailbox_chain(struct mlx5_core_dev *dev,
 				 struct mlx5_cmd_mailbox *head);
-int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
-			  struct mlx5_core_mkey *mkey,
-			  u32 *in, int inlen);
-int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev,
-			   struct mlx5_core_mkey *mkey);
-int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey,
-			 u32 *out, int outlen);
+int mlx5_core_create_mkey(struct mlx5_core_dev *dev, u32 *mkey, u32 *in,
+			  int inlen);
+int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, u32 mkey);
+int mlx5_core_query_mkey(struct mlx5_core_dev *dev, u32 mkey, u32 *out,
+			 int outlen);
 int mlx5_core_alloc_pd(struct mlx5_core_dev *dev, u32 *pdn);
 int mlx5_core_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn);
 int mlx5_pagealloc_init(struct mlx5_core_dev *dev);
 void mlx5_pagealloc_cleanup(struct mlx5_core_dev *dev);
 void mlx5_pagealloc_start(struct mlx5_core_dev *dev);
 void mlx5_pagealloc_stop(struct mlx5_core_dev *dev);
+void mlx5_pages_debugfs_init(struct mlx5_core_dev *dev);
+void mlx5_pages_debugfs_cleanup(struct mlx5_core_dev *dev);
 void mlx5_core_req_pages_handler(struct mlx5_core_dev *dev, u16 func_id,
 				 s32 npages, bool ec_function);
 int mlx5_satisfy_startup_pages(struct mlx5_core_dev *dev, int boot);
@@ -1044,15 +1036,18 @@ int mlx5_reclaim_startup_pages(struct mlx5_core_dev *dev);
 void mlx5_register_debugfs(void);
 void mlx5_unregister_debugfs(void);
 
-void mlx5_fill_page_array(struct mlx5_frag_buf *buf, __be64 *pas);
 void mlx5_fill_page_frag_array_perm(struct mlx5_frag_buf *buf, __be64 *pas, u8 perm);
 void mlx5_fill_page_frag_array(struct mlx5_frag_buf *frag_buf, __be64 *pas);
 int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn);
 int mlx5_core_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn);
 int mlx5_core_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid, u32 qpn);
 
+struct dentry *mlx5_debugfs_get_dev_root(struct mlx5_core_dev *dev);
 void mlx5_qp_debugfs_init(struct mlx5_core_dev *dev);
 void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev);
+int mlx5_access_reg(struct mlx5_core_dev *dev, void *data_in, int size_in,
+		    void *data_out, int size_out, u16 reg_id, int arg,
+		    int write, bool verbose);
 int mlx5_core_access_reg(struct mlx5_core_dev *dev, void *data_in,
 			 int size_in, void *data_out, int size_out,
 			 u16 reg_num, int arg, int write);
@@ -1157,6 +1152,9 @@ int mlx5_dm_sw_icm_alloc(struct mlx5_core_dev *dev, enum mlx5_sw_icm_type type,
 int mlx5_dm_sw_icm_dealloc(struct mlx5_core_dev *dev, enum mlx5_sw_icm_type type,
 			   u64 length, u16 uid, phys_addr_t addr, u32 obj_id);
 
+struct mlx5_core_dev *mlx5_vf_get_core_dev(struct pci_dev *pdev);
+void mlx5_vf_put_core_dev(struct mlx5_core_dev *mdev);
+
 #ifdef CONFIG_MLX5_CORE_IPOIB
 struct net_device *mlx5_rdma_netdev_alloc(struct mlx5_core_dev *mdev,
 					  struct ib_device *ibdev,
@@ -1242,6 +1240,16 @@ static inline int mlx5_core_native_port_num(struct mlx5_core_dev *dev)
 	return MLX5_CAP_GEN(dev, native_port_num);
 }
 
+static inline int mlx5_get_dev_index(struct mlx5_core_dev *dev)
+{
+	int idx = MLX5_CAP_GEN(dev, native_port_num);
+
+	if (idx >= 1 && idx <= MLX5_MAX_PORTS)
+		return idx - 1;
+	else
+		return PCI_FUNC(dev->pdev->devfn);
+}
+
 enum {
 	MLX5_TRIGGERED_CMD_COMP = (u64)1 << 32,
 };
@@ -1250,11 +1258,12 @@ static inline bool mlx5_is_roce_init_enabled(struct mlx5_core_dev *dev)
 {
 	struct devlink *devlink = priv_to_devlink(dev);
 	union devlink_param_value val;
+	int err;
 
-	devlink_param_driverinit_value_get(devlink,
-					   DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
-					   &val);
-	return val.vbool;
+	err = devlink_param_driverinit_value_get(devlink,
+						 DEVLINK_PARAM_GENERIC_ID_ENABLE_ROCE,
+						 &val);
+	return err ? MLX5_CAP_GEN(dev, roce) : val.vbool;
 }
 
 #endif /* MLX5_DRIVER_H */
diff --git a/include/linux/mlx5/eq.h b/include/linux/mlx5/eq.h
index cea6ecb4b73e..3705a382276b 100644
--- a/include/linux/mlx5/eq.h
+++ b/include/linux/mlx5/eq.h
@@ -4,19 +4,18 @@
 #ifndef MLX5_CORE_EQ_H
 #define MLX5_CORE_EQ_H
 
-#define MLX5_IRQ_VEC_COMP_BASE 1
 #define MLX5_NUM_CMD_EQE   (32)
 #define MLX5_NUM_ASYNC_EQE (0x1000)
 #define MLX5_NUM_SPARE_EQE (0x80)
 
 struct mlx5_eq;
+struct mlx5_irq;
 struct mlx5_core_dev;
 
 struct mlx5_eq_param {
-	u8             irq_index;
 	int            nent;
 	u64            mask[4];
-	cpumask_var_t  affinity;
+	struct mlx5_irq *irq;
 };
 
 struct mlx5_eq *
diff --git a/include/linux/mlx5/eswitch.h b/include/linux/mlx5/eswitch.h
index 4ab5c1fc1270..8b18fe9771f9 100644
--- a/include/linux/mlx5/eswitch.h
+++ b/include/linux/mlx5/eswitch.h
@@ -130,19 +130,28 @@ u32 mlx5_eswitch_get_vport_metadata_for_set(struct mlx5_eswitch *esw,
 #define ESW_TUN_OPTS_MASK GENMASK(31 - ESW_TUN_ID_BITS - ESW_RESERVED_BITS, ESW_TUN_OPTS_OFFSET)
 #define ESW_TUN_MASK GENMASK(31 - ESW_RESERVED_BITS, ESW_TUN_OFFSET)
 #define ESW_TUN_ID_SLOW_TABLE_GOTO_VPORT 0 /* 0 is not a valid tunnel id */
+#define ESW_TUN_ID_BRIDGE_INGRESS_PUSH_VLAN ESW_TUN_ID_SLOW_TABLE_GOTO_VPORT
 /* 0x7FF is a reserved mapping */
 #define ESW_TUN_OPTS_SLOW_TABLE_GOTO_VPORT GENMASK(ESW_TUN_OPTS_BITS - 1, 0)
 #define ESW_TUN_SLOW_TABLE_GOTO_VPORT ((ESW_TUN_ID_SLOW_TABLE_GOTO_VPORT << ESW_TUN_OPTS_BITS) | \
 				       ESW_TUN_OPTS_SLOW_TABLE_GOTO_VPORT)
 #define ESW_TUN_SLOW_TABLE_GOTO_VPORT_MARK ESW_TUN_OPTS_MASK
-
-u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev);
+/* 0x7FE is a reserved mapping for bridge ingress push vlan mark */
+#define ESW_TUN_OPTS_BRIDGE_INGRESS_PUSH_VLAN (ESW_TUN_OPTS_SLOW_TABLE_GOTO_VPORT - 1)
+#define ESW_TUN_BRIDGE_INGRESS_PUSH_VLAN ((ESW_TUN_ID_BRIDGE_INGRESS_PUSH_VLAN << \
+					   ESW_TUN_OPTS_BITS) | \
+					  ESW_TUN_OPTS_BRIDGE_INGRESS_PUSH_VLAN)
+#define ESW_TUN_BRIDGE_INGRESS_PUSH_VLAN_MARK \
+	GENMASK(31 - ESW_TUN_ID_BITS - ESW_RESERVED_BITS, \
+		ESW_TUN_OPTS_OFFSET + 1)
+
+u8 mlx5_eswitch_mode(const struct mlx5_core_dev *dev);
 u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev);
 struct mlx5_core_dev *mlx5_eswitch_get_core_dev(struct mlx5_eswitch *esw);
 
 #else  /* CONFIG_MLX5_ESWITCH */
 
-static inline u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev)
+static inline u8 mlx5_eswitch_mode(const struct mlx5_core_dev *dev)
 {
 	return MLX5_ESWITCH_NONE;
 }
diff --git a/include/linux/mlx5/fs.h b/include/linux/mlx5/fs.h
index 0106c67e8ccb..e3bfed68b08a 100644
--- a/include/linux/mlx5/fs.h
+++ b/include/linux/mlx5/fs.h
@@ -73,6 +73,7 @@ enum mlx5_flow_namespace_type {
 	MLX5_FLOW_NAMESPACE_KERNEL,
 	MLX5_FLOW_NAMESPACE_LEFTOVERS,
 	MLX5_FLOW_NAMESPACE_ANCHOR,
+	MLX5_FLOW_NAMESPACE_FDB_BYPASS,
 	MLX5_FLOW_NAMESPACE_FDB,
 	MLX5_FLOW_NAMESPACE_ESW_EGRESS,
 	MLX5_FLOW_NAMESPACE_ESW_INGRESS,
@@ -83,6 +84,9 @@ enum mlx5_flow_namespace_type {
 	MLX5_FLOW_NAMESPACE_RDMA_RX,
 	MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL,
 	MLX5_FLOW_NAMESPACE_RDMA_TX,
+	MLX5_FLOW_NAMESPACE_PORT_SEL,
+	MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS,
+	MLX5_FLOW_NAMESPACE_RDMA_TX_COUNTERS,
 };
 
 enum {
@@ -97,6 +101,7 @@ enum {
 
 struct mlx5_pkt_reformat;
 struct mlx5_modify_hdr;
+struct mlx5_flow_definer;
 struct mlx5_flow_table;
 struct mlx5_flow_group;
 struct mlx5_flow_namespace;
@@ -219,6 +224,7 @@ struct mlx5_flow_act {
 	u32 flags;
 	struct mlx5_fs_vlan vlan[MLX5_FS_VLAN_DEPTH];
 	struct ib_counters *counters;
+	struct mlx5_flow_group *fg;
 };
 
 #define MLX5_DECLARE_FLOW_ACT(name) \
@@ -241,6 +247,10 @@ int mlx5_modify_rule_destination(struct mlx5_flow_handle *handler,
 				 struct mlx5_flow_destination *old_dest);
 
 struct mlx5_fc *mlx5_fc_create(struct mlx5_core_dev *dev, bool aging);
+
+/* As mlx5_fc_create() but doesn't queue stats refresh thread. */
+struct mlx5_fc *mlx5_fc_create_ex(struct mlx5_core_dev *dev, bool aging);
+
 void mlx5_fc_destroy(struct mlx5_core_dev *dev, struct mlx5_fc *counter);
 u64 mlx5_fc_query_lastuse(struct mlx5_fc *counter);
 void mlx5_fc_query_cached(struct mlx5_fc *counter,
@@ -257,6 +267,13 @@ struct mlx5_modify_hdr *mlx5_modify_header_alloc(struct mlx5_core_dev *dev,
 						 void *modify_actions);
 void mlx5_modify_header_dealloc(struct mlx5_core_dev *dev,
 				struct mlx5_modify_hdr *modify_hdr);
+struct mlx5_flow_definer *
+mlx5_create_match_definer(struct mlx5_core_dev *dev,
+			  enum mlx5_flow_namespace_type ns_type, u16 format_id,
+			  u32 *match_mask);
+void mlx5_destroy_match_definer(struct mlx5_core_dev *dev,
+				struct mlx5_flow_definer *definer);
+int mlx5_get_match_definer_id(struct mlx5_flow_definer *definer);
 
 struct mlx5_pkt_reformat_params {
 	int type;
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 993204a6c1a1..7d2d0ba82144 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -64,13 +64,6 @@ enum {
 };
 
 enum {
-	MLX5_MODIFY_TIR_BITMASK_LRO                   = 0x0,
-	MLX5_MODIFY_TIR_BITMASK_INDIRECT_TABLE        = 0x1,
-	MLX5_MODIFY_TIR_BITMASK_HASH                  = 0x2,
-	MLX5_MODIFY_TIR_BITMASK_TUNNELED_OFFLOAD_EN   = 0x3
-};
-
-enum {
 	MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE        = 0x0,
 	MLX5_SET_HCA_CAP_OP_MOD_ODP                   = 0x2,
 	MLX5_SET_HCA_CAP_OP_MOD_ATOMIC                = 0x3,
@@ -94,6 +87,7 @@ enum {
 enum {
 	MLX5_OBJ_TYPE_GENEVE_TLV_OPT = 0x000b,
 	MLX5_OBJ_TYPE_VIRTIO_NET_Q = 0x000d,
+	MLX5_OBJ_TYPE_MATCH_DEFINER = 0x0018,
 	MLX5_OBJ_TYPE_MKEY = 0xff01,
 	MLX5_OBJ_TYPE_QP = 0xff02,
 	MLX5_OBJ_TYPE_PSV = 0xff03,
@@ -126,6 +120,11 @@ enum {
 	MLX5_CMD_OP_QUERY_SF_PARTITION            = 0x111,
 	MLX5_CMD_OP_ALLOC_SF                      = 0x113,
 	MLX5_CMD_OP_DEALLOC_SF                    = 0x114,
+	MLX5_CMD_OP_SUSPEND_VHCA                  = 0x115,
+	MLX5_CMD_OP_RESUME_VHCA                   = 0x116,
+	MLX5_CMD_OP_QUERY_VHCA_MIGRATION_STATE    = 0x117,
+	MLX5_CMD_OP_SAVE_VHCA_STATE               = 0x118,
+	MLX5_CMD_OP_LOAD_VHCA_STATE               = 0x119,
 	MLX5_CMD_OP_CREATE_MKEY                   = 0x200,
 	MLX5_CMD_OP_QUERY_MKEY                    = 0x201,
 	MLX5_CMD_OP_DESTROY_MKEY                  = 0x202,
@@ -342,7 +341,7 @@ struct mlx5_ifc_flow_table_fields_supported_bits {
 	u8         outer_geneve_oam[0x1];
 	u8         outer_geneve_protocol_type[0x1];
 	u8         outer_geneve_opt_len[0x1];
-	u8         reserved_at_1e[0x1];
+	u8         source_vhca_port[0x1];
 	u8         source_eswitch_port[0x1];
 
 	u8         inner_dmac[0x1];
@@ -371,7 +370,8 @@ struct mlx5_ifc_flow_table_fields_supported_bits {
 	u8         reserved_at_37[0x9];
 
 	u8         geneve_tlv_option_0_data[0x1];
-	u8         reserved_at_41[0x4];
+	u8         geneve_tlv_option_0_exist[0x1];
+	u8         reserved_at_42[0x3];
 	u8         outer_first_mpls_over_udp[0x4];
 	u8         outer_first_mpls_over_gre[0x4];
 	u8         inner_first_mpls[0x4];
@@ -393,6 +393,14 @@ struct mlx5_ifc_flow_table_fields_supported_bits {
 	u8         metadata_reg_c_0[0x1];
 };
 
+struct mlx5_ifc_flow_table_fields_supported_2_bits {
+	u8         reserved_at_0[0xe];
+	u8         bth_opcode[0x1];
+	u8         reserved_at_f[0x11];
+
+	u8         reserved_at_20[0x60];
+};
+
 struct mlx5_ifc_flow_table_prop_layout_bits {
 	u8         ft_support[0x1];
 	u8         reserved_at_1[0x1];
@@ -490,7 +498,10 @@ struct mlx5_ifc_fte_match_set_lyr_2_4_bits {
 	u8         tcp_sport[0x10];
 	u8         tcp_dport[0x10];
 
-	u8         reserved_at_c0[0x18];
+	u8         reserved_at_c0[0x10];
+	u8         ipv4_ihl[0x4];
+	u8         reserved_at_c4[0x4];
+
 	u8         ttl_hoplimit[0x8];
 
 	u8         udp_sport[0x10];
@@ -539,10 +550,11 @@ struct mlx5_ifc_fte_match_set_misc_bits {
 	union mlx5_ifc_gre_key_bits gre_key;
 
 	u8         vxlan_vni[0x18];
-	u8         reserved_at_b8[0x8];
+	u8         bth_opcode[0x8];
 
 	u8         geneve_vni[0x18];
-	u8         reserved_at_d8[0x7];
+	u8         reserved_at_d8[0x6];
+	u8         geneve_tlv_option_0_exist[0x1];
 	u8         geneve_oam[0x1];
 
 	u8         reserved_at_e0[0xc];
@@ -661,6 +673,26 @@ struct mlx5_ifc_fte_match_set_misc4_bits {
 	u8         reserved_at_100[0x100];
 };
 
+struct mlx5_ifc_fte_match_set_misc5_bits {
+	u8         macsec_tag_0[0x20];
+
+	u8         macsec_tag_1[0x20];
+
+	u8         macsec_tag_2[0x20];
+
+	u8         macsec_tag_3[0x20];
+
+	u8         tunnel_header_0[0x20];
+
+	u8         tunnel_header_1[0x20];
+
+	u8         tunnel_header_2[0x20];
+
+	u8         tunnel_header_3[0x20];
+
+	u8         reserved_at_100[0x100];
+};
+
 struct mlx5_ifc_cmd_pas_bits {
 	u8         pa_h[0x20];
 
@@ -756,7 +788,15 @@ struct mlx5_ifc_flow_table_nic_cap_bits {
 
 	struct mlx5_ifc_flow_table_prop_layout_bits flow_table_properties_nic_transmit_sniffer;
 
-	u8         reserved_at_e00[0x1200];
+	u8         reserved_at_e00[0x700];
+
+	struct mlx5_ifc_flow_table_fields_supported_2_bits ft_field_support_2_nic_receive_rdma;
+
+	u8         reserved_at_1580[0x280];
+
+	struct mlx5_ifc_flow_table_fields_supported_2_bits ft_field_support_2_nic_transmit_rdma;
+
+	u8         reserved_at_1880[0x780];
 
 	u8         sw_steering_nic_rx_action_drop_icm_address[0x40];
 
@@ -767,6 +807,18 @@ struct mlx5_ifc_flow_table_nic_cap_bits {
 	u8         reserved_at_20c0[0x5f40];
 };
 
+struct mlx5_ifc_port_selection_cap_bits {
+	u8         reserved_at_0[0x10];
+	u8         port_select_flow_table[0x1];
+	u8         reserved_at_11[0xf];
+
+	u8         reserved_at_20[0x1e0];
+
+	struct mlx5_ifc_flow_table_prop_layout_bits flow_table_properties_port_selection;
+
+	u8         reserved_at_400[0x7c00];
+};
+
 enum {
 	MLX5_FDB_TO_VPORT_REG_C_0 = 0x01,
 	MLX5_FDB_TO_VPORT_REG_C_1 = 0x02,
@@ -782,7 +834,7 @@ struct mlx5_ifc_flow_table_eswitch_cap_bits {
 	u8      fdb_to_vport_reg_c_id[0x8];
 	u8      reserved_at_8[0xd];
 	u8      fdb_modify_header_fwd_to_table[0x1];
-	u8      reserved_at_16[0x1];
+	u8      fdb_ipv4_ttl_modify[0x1];
 	u8      flow_source[0x1];
 	u8      reserved_at_18[0x2];
 	u8      multi_fdb_encap[0x1];
@@ -1262,7 +1314,7 @@ enum {
 enum {
 	MLX5_FLEX_PARSER_GENEVE_ENABLED		= 1 << 3,
 	MLX5_FLEX_PARSER_MPLS_OVER_GRE_ENABLED	= 1 << 4,
-	mlx5_FLEX_PARSER_MPLS_OVER_UDP_ENABLED	= 1 << 5,
+	MLX5_FLEX_PARSER_MPLS_OVER_UDP_ENABLED	= 1 << 5,
 	MLX5_FLEX_PARSER_VXLAN_GPE_ENABLED	= 1 << 7,
 	MLX5_FLEX_PARSER_ICMP_V4_ENABLED	= 1 << 8,
 	MLX5_FLEX_PARSER_ICMP_V6_ENABLED	= 1 << 9,
@@ -1299,6 +1351,7 @@ enum mlx5_fc_bulk_alloc_bitmask {
 enum {
 	MLX5_STEERING_FORMAT_CONNECTX_5   = 0,
 	MLX5_STEERING_FORMAT_CONNECTX_6DX = 1,
+	MLX5_STEERING_FORMAT_CONNECTX_7   = 2,
 };
 
 struct mlx5_ifc_cmd_hca_cap_bits {
@@ -1306,7 +1359,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         vhca_resource_manager[0x1];
 
 	u8         hca_cap_2[0x1];
-	u8         reserved_at_21[0x2];
+	u8         reserved_at_21[0x1];
+	u8         dtor[0x1];
 	u8         event_on_vhca_state_teardown_request[0x1];
 	u8         event_on_vhca_state_in_use[0x1];
 	u8         event_on_vhca_state_active[0x1];
@@ -1336,7 +1390,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         reserved_at_b0[0x1];
 	u8         uplink_follow[0x1];
 	u8         ts_cqe_to_dest_cqn[0x1];
-	u8         reserved_at_b3[0xd];
+	u8         reserved_at_b3[0x7];
+	u8         shampo[0x1];
+	u8         reserved_at_bb[0x5];
 
 	u8         max_sgl_for_optimized_performance[0x8];
 	u8         log_max_cq_sz[0x8];
@@ -1372,8 +1428,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         reserved_at_130[0xa];
 	u8         log_max_ra_res_dc[0x6];
 
-	u8         reserved_at_140[0x6];
+	u8         reserved_at_140[0x5];
 	u8         release_all_pages[0x1];
+	u8         must_not_use[0x1];
 	u8         reserved_at_147[0x2];
 	u8         roce_accl[0x1];
 	u8         log_max_ra_req_qp[0x6];
@@ -1514,7 +1571,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         uar_4k[0x1];
 	u8         reserved_at_241[0x9];
 	u8         uar_sz[0x6];
-	u8         reserved_at_248[0x2];
+	u8         port_selection_cap[0x1];
+	u8         reserved_at_248[0x1];
 	u8         umem_uid_0[0x1];
 	u8         reserved_at_250[0x5];
 	u8         log_pg_sz[0x8];
@@ -1587,7 +1645,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         log_max_tis_per_sq[0x5];
 
 	u8         ext_stride_num_range[0x1];
-	u8         reserved_at_3a1[0x2];
+	u8         roce_rw_supported[0x1];
+	u8         log_max_current_uc_list_wr_supported[0x1];
 	u8         log_max_stride_sz_rq[0x5];
 	u8         reserved_at_3a8[0x3];
 	u8         log_min_stride_sz_rq[0x5];
@@ -1701,7 +1760,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         reserved_at_682[0x1];
 	u8         log_max_sf[0x5];
 	u8         apu[0x1];
-	u8         reserved_at_689[0x7];
+	u8         reserved_at_689[0x4];
+	u8         migration[0x1];
+	u8         reserved_at_68e[0x2];
 	u8         log_min_sf_size[0x8];
 	u8         max_num_sf_partitions[0x8];
 
@@ -1716,7 +1777,7 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8         flex_parser_id_outer_first_mpls_over_gre[0x4];
 	u8         flex_parser_id_outer_first_mpls_over_udp_label[0x4];
 
-	u8	   reserved_at_6e0[0x10];
+	u8         max_num_match_definer[0x10];
 	u8	   sf_base_id[0x10];
 
 	u8         flex_parser_id_gtpu_dw_2[0x4];
@@ -1731,7 +1792,7 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 
 	u8	   reserved_at_760[0x20];
 	u8	   vhca_tunnel_commands[0x40];
-	u8	   reserved_at_7c0[0x40];
+	u8         match_definer_format_supported[0x40];
 };
 
 struct mlx5_ifc_cmd_hca_cap_2_bits {
@@ -1750,6 +1811,7 @@ enum mlx5_flow_destination_type {
 	MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE   = 0x1,
 	MLX5_FLOW_DESTINATION_TYPE_TIR          = 0x2,
 	MLX5_FLOW_DESTINATION_TYPE_FLOW_SAMPLER = 0x6,
+	MLX5_FLOW_DESTINATION_TYPE_UPLINK       = 0x8,
 
 	MLX5_FLOW_DESTINATION_TYPE_PORT         = 0x99,
 	MLX5_FLOW_DESTINATION_TYPE_COUNTER      = 0x100,
@@ -1804,7 +1866,9 @@ struct mlx5_ifc_fte_match_param_bits {
 
 	struct mlx5_ifc_fte_match_set_misc4_bits misc_parameters_4;
 
-	u8         reserved_at_c00[0x400];
+	struct mlx5_ifc_fte_match_set_misc5_bits misc_parameters_5;
+
+	u8         reserved_at_e00[0x200];
 };
 
 enum {
@@ -1876,7 +1940,21 @@ struct mlx5_ifc_wq_bits {
 	u8         reserved_at_139[0x4];
 	u8         log_wqe_stride_size[0x3];
 
-	u8         reserved_at_140[0x4c0];
+	u8         reserved_at_140[0x80];
+
+	u8         headers_mkey[0x20];
+
+	u8         shampo_enable[0x1];
+	u8         reserved_at_1e1[0x4];
+	u8         log_reservation_size[0x3];
+	u8         reserved_at_1e8[0x5];
+	u8         log_max_num_of_packets_per_reservation[0x3];
+	u8         reserved_at_1f0[0x6];
+	u8         log_headers_entry_size[0x2];
+	u8         reserved_at_1f8[0x4];
+	u8         log_headers_buffer_entry_num[0x4];
+
+	u8         reserved_at_200[0x400];
 
 	struct mlx5_ifc_cmd_pas_bits pas[];
 };
@@ -2807,6 +2885,40 @@ struct mlx5_ifc_dropped_packet_logged_bits {
 	u8         reserved_at_0[0xe0];
 };
 
+struct mlx5_ifc_default_timeout_bits {
+	u8         to_multiplier[0x3];
+	u8         reserved_at_3[0x9];
+	u8         to_value[0x14];
+};
+
+struct mlx5_ifc_dtor_reg_bits {
+	u8         reserved_at_0[0x20];
+
+	struct mlx5_ifc_default_timeout_bits pcie_toggle_to;
+
+	u8         reserved_at_40[0x60];
+
+	struct mlx5_ifc_default_timeout_bits health_poll_to;
+
+	struct mlx5_ifc_default_timeout_bits full_crdump_to;
+
+	struct mlx5_ifc_default_timeout_bits fw_reset_to;
+
+	struct mlx5_ifc_default_timeout_bits flush_on_err_to;
+
+	struct mlx5_ifc_default_timeout_bits pci_sync_update_to;
+
+	struct mlx5_ifc_default_timeout_bits tear_down_to;
+
+	struct mlx5_ifc_default_timeout_bits fsm_reactivate_to;
+
+	struct mlx5_ifc_default_timeout_bits reclaim_pages_to;
+
+	struct mlx5_ifc_default_timeout_bits reclaim_vfs_pages_to;
+
+	u8         reserved_at_1c0[0x40];
+};
+
 enum {
 	MLX5_CQ_ERROR_SYNDROME_CQ_OVERRUN                 = 0x1,
 	MLX5_CQ_ERROR_SYNDROME_CQ_ACCESS_VIOLATION_ERROR  = 0x2,
@@ -3118,6 +3230,20 @@ struct mlx5_ifc_roce_addr_layout_bits {
 	u8         reserved_at_e0[0x20];
 };
 
+struct mlx5_ifc_shampo_cap_bits {
+	u8    reserved_at_0[0x3];
+	u8    shampo_log_max_reservation_size[0x5];
+	u8    reserved_at_8[0x3];
+	u8    shampo_log_min_reservation_size[0x5];
+	u8    shampo_min_mss_size[0x10];
+
+	u8    reserved_at_20[0x3];
+	u8    shampo_max_log_headers_entry_size[0x5];
+	u8    reserved_at_28[0x18];
+
+	u8    reserved_at_40[0x7c0];
+};
+
 union mlx5_ifc_hca_cap_union_bits {
 	struct mlx5_ifc_cmd_hca_cap_bits cmd_hca_cap;
 	struct mlx5_ifc_cmd_hca_cap_2_bits cmd_hca_cap_2;
@@ -3128,6 +3254,7 @@ union mlx5_ifc_hca_cap_union_bits {
 	struct mlx5_ifc_flow_table_nic_cap_bits flow_table_nic_cap;
 	struct mlx5_ifc_flow_table_eswitch_cap_bits flow_table_eswitch_cap;
 	struct mlx5_ifc_e_switch_cap_bits e_switch_cap;
+	struct mlx5_ifc_port_selection_cap_bits port_selection_cap;
 	struct mlx5_ifc_vector_calc_cap_bits vector_calc_cap;
 	struct mlx5_ifc_qos_cap_bits qos_cap;
 	struct mlx5_ifc_debug_cap_bits debug_cap;
@@ -3135,6 +3262,7 @@ union mlx5_ifc_hca_cap_union_bits {
 	struct mlx5_ifc_tls_cap_bits tls_cap;
 	struct mlx5_ifc_device_mem_cap_bits device_mem_cap;
 	struct mlx5_ifc_virtio_emulation_cap_bits virtio_emulation_cap;
+	struct mlx5_ifc_shampo_cap_bits shampo_cap;
 	u8         reserved_at_0[0x8000];
 };
 
@@ -3309,8 +3437,8 @@ enum {
 };
 
 enum {
-	MLX5_TIRC_LRO_ENABLE_MASK_IPV4_LRO  = 0x1,
-	MLX5_TIRC_LRO_ENABLE_MASK_IPV6_LRO  = 0x2,
+	MLX5_TIRC_PACKET_MERGE_MASK_IPV4_LRO  = BIT(0),
+	MLX5_TIRC_PACKET_MERGE_MASK_IPV6_LRO  = BIT(1),
 };
 
 enum {
@@ -3335,7 +3463,7 @@ struct mlx5_ifc_tirc_bits {
 
 	u8         reserved_at_80[0x4];
 	u8         lro_timeout_period_usecs[0x10];
-	u8         lro_enable_mask[0x4];
+	u8         packet_merge_mask[0x4];
 	u8         lro_max_ip_payload_size[0x8];
 
 	u8         reserved_at_a0[0x40];
@@ -3517,6 +3645,18 @@ enum {
 	MLX5_RQC_STATE_ERR  = 0x3,
 };
 
+enum {
+	MLX5_RQC_SHAMPO_NO_MATCH_ALIGNMENT_GRANULARITY_BYTE    = 0x0,
+	MLX5_RQC_SHAMPO_NO_MATCH_ALIGNMENT_GRANULARITY_STRIDE  = 0x1,
+	MLX5_RQC_SHAMPO_NO_MATCH_ALIGNMENT_GRANULARITY_PAGE    = 0x2,
+};
+
+enum {
+	MLX5_RQC_SHAMPO_MATCH_CRITERIA_TYPE_NO_MATCH    = 0x0,
+	MLX5_RQC_SHAMPO_MATCH_CRITERIA_TYPE_EXTENDED    = 0x1,
+	MLX5_RQC_SHAMPO_MATCH_CRITERIA_TYPE_FIVE_TUPLE  = 0x2,
+};
+
 struct mlx5_ifc_rqc_bits {
 	u8         rlky[0x1];
 	u8	   delay_drop_en[0x1];
@@ -3549,7 +3689,13 @@ struct mlx5_ifc_rqc_bits {
 	u8         reserved_at_c0[0x10];
 	u8         hairpin_peer_vhca[0x10];
 
-	u8         reserved_at_e0[0xa0];
+	u8         reserved_at_e0[0x46];
+	u8         shampo_no_match_alignment_granularity[0x2];
+	u8         reserved_at_128[0x6];
+	u8         shampo_match_criteria_type[0x2];
+	u8         reservation_timeout[0x10];
+
+	u8         reserved_at_140[0x40];
 
 	struct mlx5_ifc_wq_bits wq;
 };
@@ -4097,13 +4243,19 @@ struct mlx5_ifc_health_buffer_bits {
 
 	u8         assert_callra[0x20];
 
-	u8         reserved_at_140[0x40];
+	u8         reserved_at_140[0x20];
+
+	u8         time[0x20];
 
 	u8         fw_version[0x20];
 
 	u8         hw_id[0x20];
 
-	u8         reserved_at_1c0[0x20];
+	u8         rfr[0x1];
+	u8         reserved_at_1c1[0x3];
+	u8         valid[0x1];
+	u8         severity[0x3];
+	u8         reserved_at_1c8[0x18];
 
 	u8         irisc_index[0x8];
 	u8         synd[0x8];
@@ -5616,6 +5768,236 @@ struct mlx5_ifc_query_fte_in_bits {
 	u8         reserved_at_120[0xe0];
 };
 
+struct mlx5_ifc_match_definer_format_0_bits {
+	u8         reserved_at_0[0x100];
+
+	u8         metadata_reg_c_0[0x20];
+
+	u8         metadata_reg_c_1[0x20];
+
+	u8         outer_dmac_47_16[0x20];
+
+	u8         outer_dmac_15_0[0x10];
+	u8         outer_ethertype[0x10];
+
+	u8         reserved_at_180[0x1];
+	u8         sx_sniffer[0x1];
+	u8         functional_lb[0x1];
+	u8         outer_ip_frag[0x1];
+	u8         outer_qp_type[0x2];
+	u8         outer_encap_type[0x2];
+	u8         port_number[0x2];
+	u8         outer_l3_type[0x2];
+	u8         outer_l4_type[0x2];
+	u8         outer_first_vlan_type[0x2];
+	u8         outer_first_vlan_prio[0x3];
+	u8         outer_first_vlan_cfi[0x1];
+	u8         outer_first_vlan_vid[0xc];
+
+	u8         outer_l4_type_ext[0x4];
+	u8         reserved_at_1a4[0x2];
+	u8         outer_ipsec_layer[0x2];
+	u8         outer_l2_type[0x2];
+	u8         force_lb[0x1];
+	u8         outer_l2_ok[0x1];
+	u8         outer_l3_ok[0x1];
+	u8         outer_l4_ok[0x1];
+	u8         outer_second_vlan_type[0x2];
+	u8         outer_second_vlan_prio[0x3];
+	u8         outer_second_vlan_cfi[0x1];
+	u8         outer_second_vlan_vid[0xc];
+
+	u8         outer_smac_47_16[0x20];
+
+	u8         outer_smac_15_0[0x10];
+	u8         inner_ipv4_checksum_ok[0x1];
+	u8         inner_l4_checksum_ok[0x1];
+	u8         outer_ipv4_checksum_ok[0x1];
+	u8         outer_l4_checksum_ok[0x1];
+	u8         inner_l3_ok[0x1];
+	u8         inner_l4_ok[0x1];
+	u8         outer_l3_ok_duplicate[0x1];
+	u8         outer_l4_ok_duplicate[0x1];
+	u8         outer_tcp_cwr[0x1];
+	u8         outer_tcp_ece[0x1];
+	u8         outer_tcp_urg[0x1];
+	u8         outer_tcp_ack[0x1];
+	u8         outer_tcp_psh[0x1];
+	u8         outer_tcp_rst[0x1];
+	u8         outer_tcp_syn[0x1];
+	u8         outer_tcp_fin[0x1];
+};
+
+struct mlx5_ifc_match_definer_format_22_bits {
+	u8         reserved_at_0[0x100];
+
+	u8         outer_ip_src_addr[0x20];
+
+	u8         outer_ip_dest_addr[0x20];
+
+	u8         outer_l4_sport[0x10];
+	u8         outer_l4_dport[0x10];
+
+	u8         reserved_at_160[0x1];
+	u8         sx_sniffer[0x1];
+	u8         functional_lb[0x1];
+	u8         outer_ip_frag[0x1];
+	u8         outer_qp_type[0x2];
+	u8         outer_encap_type[0x2];
+	u8         port_number[0x2];
+	u8         outer_l3_type[0x2];
+	u8         outer_l4_type[0x2];
+	u8         outer_first_vlan_type[0x2];
+	u8         outer_first_vlan_prio[0x3];
+	u8         outer_first_vlan_cfi[0x1];
+	u8         outer_first_vlan_vid[0xc];
+
+	u8         metadata_reg_c_0[0x20];
+
+	u8         outer_dmac_47_16[0x20];
+
+	u8         outer_smac_47_16[0x20];
+
+	u8         outer_smac_15_0[0x10];
+	u8         outer_dmac_15_0[0x10];
+};
+
+struct mlx5_ifc_match_definer_format_23_bits {
+	u8         reserved_at_0[0x100];
+
+	u8         inner_ip_src_addr[0x20];
+
+	u8         inner_ip_dest_addr[0x20];
+
+	u8         inner_l4_sport[0x10];
+	u8         inner_l4_dport[0x10];
+
+	u8         reserved_at_160[0x1];
+	u8         sx_sniffer[0x1];
+	u8         functional_lb[0x1];
+	u8         inner_ip_frag[0x1];
+	u8         inner_qp_type[0x2];
+	u8         inner_encap_type[0x2];
+	u8         port_number[0x2];
+	u8         inner_l3_type[0x2];
+	u8         inner_l4_type[0x2];
+	u8         inner_first_vlan_type[0x2];
+	u8         inner_first_vlan_prio[0x3];
+	u8         inner_first_vlan_cfi[0x1];
+	u8         inner_first_vlan_vid[0xc];
+
+	u8         tunnel_header_0[0x20];
+
+	u8         inner_dmac_47_16[0x20];
+
+	u8         inner_smac_47_16[0x20];
+
+	u8         inner_smac_15_0[0x10];
+	u8         inner_dmac_15_0[0x10];
+};
+
+struct mlx5_ifc_match_definer_format_29_bits {
+	u8         reserved_at_0[0xc0];
+
+	u8         outer_ip_dest_addr[0x80];
+
+	u8         outer_ip_src_addr[0x80];
+
+	u8         outer_l4_sport[0x10];
+	u8         outer_l4_dport[0x10];
+
+	u8         reserved_at_1e0[0x20];
+};
+
+struct mlx5_ifc_match_definer_format_30_bits {
+	u8         reserved_at_0[0xa0];
+
+	u8         outer_ip_dest_addr[0x80];
+
+	u8         outer_ip_src_addr[0x80];
+
+	u8         outer_dmac_47_16[0x20];
+
+	u8         outer_smac_47_16[0x20];
+
+	u8         outer_smac_15_0[0x10];
+	u8         outer_dmac_15_0[0x10];
+};
+
+struct mlx5_ifc_match_definer_format_31_bits {
+	u8         reserved_at_0[0xc0];
+
+	u8         inner_ip_dest_addr[0x80];
+
+	u8         inner_ip_src_addr[0x80];
+
+	u8         inner_l4_sport[0x10];
+	u8         inner_l4_dport[0x10];
+
+	u8         reserved_at_1e0[0x20];
+};
+
+struct mlx5_ifc_match_definer_format_32_bits {
+	u8         reserved_at_0[0xa0];
+
+	u8         inner_ip_dest_addr[0x80];
+
+	u8         inner_ip_src_addr[0x80];
+
+	u8         inner_dmac_47_16[0x20];
+
+	u8         inner_smac_47_16[0x20];
+
+	u8         inner_smac_15_0[0x10];
+	u8         inner_dmac_15_0[0x10];
+};
+
+struct mlx5_ifc_match_definer_bits {
+	u8         modify_field_select[0x40];
+
+	u8         reserved_at_40[0x40];
+
+	u8         reserved_at_80[0x10];
+	u8         format_id[0x10];
+
+	u8         reserved_at_a0[0x160];
+
+	u8         match_mask[16][0x20];
+};
+
+struct mlx5_ifc_general_obj_in_cmd_hdr_bits {
+	u8         opcode[0x10];
+	u8         uid[0x10];
+
+	u8         vhca_tunnel_id[0x10];
+	u8         obj_type[0x10];
+
+	u8         obj_id[0x20];
+
+	u8         reserved_at_60[0x20];
+};
+
+struct mlx5_ifc_general_obj_out_cmd_hdr_bits {
+	u8         status[0x8];
+	u8         reserved_at_8[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         obj_id[0x20];
+
+	u8         reserved_at_60[0x20];
+};
+
+struct mlx5_ifc_create_match_definer_in_bits {
+	struct mlx5_ifc_general_obj_in_cmd_hdr_bits general_obj_in_cmd_hdr;
+
+	struct mlx5_ifc_match_definer_bits obj_context;
+};
+
+struct mlx5_ifc_create_match_definer_out_bits {
+	struct mlx5_ifc_general_obj_out_cmd_hdr_bits general_obj_out_cmd_hdr;
+};
+
 enum {
 	MLX5_QUERY_FLOW_GROUP_OUT_MATCH_CRITERIA_ENABLE_OUTER_HEADERS    = 0x0,
 	MLX5_QUERY_FLOW_GROUP_OUT_MATCH_CRITERIA_ENABLE_MISC_PARAMETERS  = 0x1,
@@ -5623,6 +6005,7 @@ enum {
 	MLX5_QUERY_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_MISC_PARAMETERS_2 = 0x3,
 	MLX5_QUERY_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_MISC_PARAMETERS_3 = 0x4,
 	MLX5_QUERY_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_MISC_PARAMETERS_4 = 0x5,
+	MLX5_QUERY_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_MISC_PARAMETERS_5 = 0x6,
 };
 
 struct mlx5_ifc_query_flow_group_out_bits {
@@ -6369,7 +6752,7 @@ struct mlx5_ifc_modify_tir_bitmask_bits {
 	u8         reserved_at_3c[0x1];
 	u8         hash[0x1];
 	u8         reserved_at_3e[0x1];
-	u8         lro[0x1];
+	u8         packet_merge[0x1];
 };
 
 struct mlx5_ifc_modify_tir_out_bits {
@@ -7569,7 +7952,7 @@ struct mlx5_ifc_dealloc_uar_out_bits {
 
 struct mlx5_ifc_dealloc_uar_in_bits {
 	u8         opcode[0x10];
-	u8         reserved_at_10[0x10];
+	u8         uid[0x10];
 
 	u8         reserved_at_20[0x10];
 	u8         op_mod[0x10];
@@ -8090,6 +8473,11 @@ struct mlx5_ifc_create_flow_group_out_bits {
 };
 
 enum {
+	MLX5_CREATE_FLOW_GROUP_IN_GROUP_TYPE_TCAM_SUBTABLE  = 0x0,
+	MLX5_CREATE_FLOW_GROUP_IN_GROUP_TYPE_HASH_SPLIT     = 0x1,
+};
+
+enum {
 	MLX5_CREATE_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_OUTER_HEADERS     = 0x0,
 	MLX5_CREATE_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_MISC_PARAMETERS   = 0x1,
 	MLX5_CREATE_FLOW_GROUP_IN_MATCH_CRITERIA_ENABLE_INNER_HEADERS     = 0x2,
@@ -8110,7 +8498,9 @@ struct mlx5_ifc_create_flow_group_in_bits {
 	u8         reserved_at_60[0x20];
 
 	u8         table_type[0x8];
-	u8         reserved_at_88[0x18];
+	u8         reserved_at_88[0x4];
+	u8         group_type[0x4];
+	u8         reserved_at_90[0x10];
 
 	u8         reserved_at_a0[0x8];
 	u8         table_id[0x18];
@@ -8125,7 +8515,10 @@ struct mlx5_ifc_create_flow_group_in_bits {
 
 	u8         end_flow_index[0x20];
 
-	u8         reserved_at_140[0xa0];
+	u8         reserved_at_140[0x10];
+	u8         match_definer_id[0x10];
+
+	u8         reserved_at_160[0x80];
 
 	u8         reserved_at_1e0[0x18];
 	u8         match_criteria_enable[0x8];
@@ -8416,7 +8809,7 @@ struct mlx5_ifc_alloc_uar_out_bits {
 
 struct mlx5_ifc_alloc_uar_in_bits {
 	u8         opcode[0x10];
-	u8         reserved_at_10[0x10];
+	u8         uid[0x10];
 
 	u8         reserved_at_20[0x10];
 	u8         op_mod[0x10];
@@ -9305,7 +9698,10 @@ struct mlx5_ifc_pcam_reg_bits {
 };
 
 struct mlx5_ifc_mcam_enhanced_features_bits {
-	u8         reserved_at_0[0x6b];
+	u8         reserved_at_0[0x5d];
+	u8         mcia_32dwords[0x1];
+	u8         reserved_at_5e[0xc];
+	u8         reset_state[0x1];
 	u8         ptpcyc2realtime_modify[0x1];
 	u8         reserved_at_6c[0x2];
 	u8         pci_status_and_power[0x1];
@@ -9334,7 +9730,10 @@ struct mlx5_ifc_mcam_access_reg_bits {
 	u8         regs_84_to_68[0x11];
 	u8         tracer_registers[0x4];
 
-	u8         regs_63_to_32[0x20];
+	u8         regs_63_to_46[0x12];
+	u8         mrtc[0x1];
+	u8         regs_44_to_32[0xd];
+
 	u8         regs_31_to_0[0x20];
 };
 
@@ -9496,10 +9895,10 @@ struct mlx5_ifc_pcmr_reg_bits {
 };
 
 struct mlx5_ifc_lane_2_module_mapping_bits {
-	u8         reserved_at_0[0x6];
-	u8         rx_lane[0x2];
-	u8         reserved_at_8[0x6];
-	u8         tx_lane[0x2];
+	u8         reserved_at_0[0x4];
+	u8         rx_lane[0x4];
+	u8         reserved_at_8[0x4];
+	u8         tx_lane[0x4];
 	u8         reserved_at_10[0x8];
 	u8         module[0x8];
 };
@@ -9508,8 +9907,8 @@ struct mlx5_ifc_bufferx_reg_bits {
 	u8         reserved_at_0[0x6];
 	u8         lossy[0x1];
 	u8         epsb[0x1];
-	u8         reserved_at_8[0xc];
-	u8         size[0xc];
+	u8         reserved_at_8[0x8];
+	u8         size[0x10];
 
 	u8         xoff_threshold[0x10];
 	u8         xon_threshold[0x10];
@@ -9984,6 +10383,14 @@ struct mlx5_ifc_mcda_reg_bits {
 };
 
 enum {
+	MLX5_MFRL_REG_RESET_STATE_IDLE = 0,
+	MLX5_MFRL_REG_RESET_STATE_IN_NEGOTIATION = 1,
+	MLX5_MFRL_REG_RESET_STATE_RESET_IN_PROGRESS = 2,
+	MLX5_MFRL_REG_RESET_STATE_TIMEOUT = 3,
+	MLX5_MFRL_REG_RESET_STATE_NACK = 4,
+};
+
+enum {
 	MLX5_MFRL_REG_RESET_TYPE_FULL_CHIP = BIT(0),
 	MLX5_MFRL_REG_RESET_TYPE_NET_PORT_ALIVE = BIT(1),
 };
@@ -10001,7 +10408,8 @@ struct mlx5_ifc_mfrl_reg_bits {
 	u8         pci_sync_for_fw_update_start[0x1];
 	u8         pci_sync_for_fw_update_resp[0x2];
 	u8         rst_type_sel[0x3];
-	u8         reserved_at_28[0x8];
+	u8         reserved_at_28[0x4];
+	u8         reset_state[0x4];
 	u8         reset_type[0x8];
 	u8         reset_level[0x8];
 };
@@ -10060,6 +10468,17 @@ struct mlx5_ifc_pddr_reg_bits {
 	union mlx5_ifc_pddr_reg_page_data_auto_bits page_data;
 };
 
+struct mlx5_ifc_mrtc_reg_bits {
+	u8         time_synced[0x1];
+	u8         reserved_at_1[0x1f];
+
+	u8         reserved_at_20[0x20];
+
+	u8         time_h[0x20];
+
+	u8         time_l[0x20];
+};
+
 union mlx5_ifc_ports_control_registers_document_bits {
 	struct mlx5_ifc_bufferx_reg_bits bufferx_reg;
 	struct mlx5_ifc_eth_2819_cntrs_grp_data_layout_bits eth_2819_cntrs_grp_data_layout;
@@ -10121,6 +10540,7 @@ union mlx5_ifc_ports_control_registers_document_bits {
 	struct mlx5_ifc_mirc_reg_bits mirc_reg;
 	struct mlx5_ifc_mfrl_reg_bits mfrl_reg;
 	struct mlx5_ifc_mtutc_reg_bits mtutc_reg;
+	struct mlx5_ifc_mrtc_reg_bits mrtc_reg;
 	u8         reserved_at_0[0x60e0];
 };
 
@@ -10398,9 +10818,16 @@ struct mlx5_ifc_dcbx_param_bits {
 	u8         reserved_at_a0[0x160];
 };
 
+enum {
+	MLX5_LAG_PORT_SELECT_MODE_QUEUE_AFFINITY = 0,
+	MLX5_LAG_PORT_SELECT_MODE_PORT_SELECT_FT,
+};
+
 struct mlx5_ifc_lagc_bits {
 	u8         fdb_selection_mode[0x1];
-	u8         reserved_at_1[0x1c];
+	u8         reserved_at_1[0x14];
+	u8         port_select_mode[0x3];
+	u8         reserved_at_18[0x5];
 	u8         lag_state[0x3];
 
 	u8         reserved_at_20[0x14];
@@ -10614,29 +11041,6 @@ struct mlx5_ifc_dealloc_memic_out_bits {
 	u8         reserved_at_40[0x40];
 };
 
-struct mlx5_ifc_general_obj_in_cmd_hdr_bits {
-	u8         opcode[0x10];
-	u8         uid[0x10];
-
-	u8         vhca_tunnel_id[0x10];
-	u8         obj_type[0x10];
-
-	u8         obj_id[0x20];
-
-	u8         reserved_at_60[0x20];
-};
-
-struct mlx5_ifc_general_obj_out_cmd_hdr_bits {
-	u8         status[0x8];
-	u8         reserved_at_8[0x18];
-
-	u8         syndrome[0x20];
-
-	u8         obj_id[0x20];
-
-	u8         reserved_at_60[0x20];
-};
-
 struct mlx5_ifc_umem_bits {
 	u8         reserved_at_0[0x80];
 
@@ -11131,4 +11535,142 @@ enum {
 	MLX5_MTT_PERM_RW	= MLX5_MTT_PERM_READ | MLX5_MTT_PERM_WRITE,
 };
 
+enum {
+	MLX5_SUSPEND_VHCA_IN_OP_MOD_SUSPEND_INITIATOR  = 0x0,
+	MLX5_SUSPEND_VHCA_IN_OP_MOD_SUSPEND_RESPONDER  = 0x1,
+};
+
+struct mlx5_ifc_suspend_vhca_in_bits {
+	u8         opcode[0x10];
+	u8         uid[0x10];
+
+	u8         reserved_at_20[0x10];
+	u8         op_mod[0x10];
+
+	u8         reserved_at_40[0x10];
+	u8         vhca_id[0x10];
+
+	u8         reserved_at_60[0x20];
+};
+
+struct mlx5_ifc_suspend_vhca_out_bits {
+	u8         status[0x8];
+	u8         reserved_at_8[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         reserved_at_40[0x40];
+};
+
+enum {
+	MLX5_RESUME_VHCA_IN_OP_MOD_RESUME_RESPONDER  = 0x0,
+	MLX5_RESUME_VHCA_IN_OP_MOD_RESUME_INITIATOR  = 0x1,
+};
+
+struct mlx5_ifc_resume_vhca_in_bits {
+	u8         opcode[0x10];
+	u8         uid[0x10];
+
+	u8         reserved_at_20[0x10];
+	u8         op_mod[0x10];
+
+	u8         reserved_at_40[0x10];
+	u8         vhca_id[0x10];
+
+	u8         reserved_at_60[0x20];
+};
+
+struct mlx5_ifc_resume_vhca_out_bits {
+	u8         status[0x8];
+	u8         reserved_at_8[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         reserved_at_40[0x40];
+};
+
+struct mlx5_ifc_query_vhca_migration_state_in_bits {
+	u8         opcode[0x10];
+	u8         uid[0x10];
+
+	u8         reserved_at_20[0x10];
+	u8         op_mod[0x10];
+
+	u8         reserved_at_40[0x10];
+	u8         vhca_id[0x10];
+
+	u8         reserved_at_60[0x20];
+};
+
+struct mlx5_ifc_query_vhca_migration_state_out_bits {
+	u8         status[0x8];
+	u8         reserved_at_8[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         reserved_at_40[0x40];
+
+	u8         required_umem_size[0x20];
+
+	u8         reserved_at_a0[0x160];
+};
+
+struct mlx5_ifc_save_vhca_state_in_bits {
+	u8         opcode[0x10];
+	u8         uid[0x10];
+
+	u8         reserved_at_20[0x10];
+	u8         op_mod[0x10];
+
+	u8         reserved_at_40[0x10];
+	u8         vhca_id[0x10];
+
+	u8         reserved_at_60[0x20];
+
+	u8         va[0x40];
+
+	u8         mkey[0x20];
+
+	u8         size[0x20];
+};
+
+struct mlx5_ifc_save_vhca_state_out_bits {
+	u8         status[0x8];
+	u8         reserved_at_8[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         actual_image_size[0x20];
+
+	u8         reserved_at_60[0x20];
+};
+
+struct mlx5_ifc_load_vhca_state_in_bits {
+	u8         opcode[0x10];
+	u8         uid[0x10];
+
+	u8         reserved_at_20[0x10];
+	u8         op_mod[0x10];
+
+	u8         reserved_at_40[0x10];
+	u8         vhca_id[0x10];
+
+	u8         reserved_at_60[0x20];
+
+	u8         va[0x40];
+
+	u8         mkey[0x20];
+
+	u8         size[0x20];
+};
+
+struct mlx5_ifc_load_vhca_state_out_bits {
+	u8         status[0x8];
+	u8         reserved_at_8[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         reserved_at_40[0x40];
+};
+
 #endif /* MLX5_IFC_H */
diff --git a/include/linux/mlx5/port.h b/include/linux/mlx5/port.h
index 77ea4f9c5265..28a928b0684b 100644
--- a/include/linux/mlx5/port.h
+++ b/include/linux/mlx5/port.h
@@ -56,8 +56,6 @@ enum mlx5_an_status {
 	MLX5_AN_LINK_DOWN   = 4,
 };
 
-#define MLX5_EEPROM_MAX_BYTES			32
-#define MLX5_EEPROM_IDENTIFIER_BYTE_MASK	0x000000ff
 #define MLX5_I2C_ADDR_LOW		0x50
 #define MLX5_I2C_ADDR_HIGH		0x51
 #define MLX5_EEPROM_PAGE_LENGTH		256
diff --git a/include/linux/mlx5/qp.h b/include/linux/mlx5/qp.h
index 61e48d459b23..8bda3ba5b109 100644
--- a/include/linux/mlx5/qp.h
+++ b/include/linux/mlx5/qp.h
@@ -202,6 +202,9 @@ struct mlx5_wqe_fmr_seg {
 struct mlx5_wqe_ctrl_seg {
 	__be32			opmod_idx_opcode;
 	__be32			qpn_ds;
+
+	struct_group(trailer,
+
 	u8			signature;
 	u8			rsvd[2];
 	u8			fm_ce_se;
@@ -211,6 +214,8 @@ struct mlx5_wqe_ctrl_seg {
 		__be32		umr_mkey;
 		__be32		tis_tir_num;
 	};
+
+	); /* end of trailer group */
 };
 
 #define MLX5_WQE_CTRL_DS_MASK 0x3f
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 73a52aba448f..9f44254af8ce 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3,9 +3,6 @@
 #define _LINUX_MM_H
 
 #include <linux/errno.h>
-
-#ifdef __KERNEL__
-
 #include <linux/mmdebug.h>
 #include <linux/gfp.h>
 #include <linux/bug.h>
@@ -26,7 +23,6 @@
 #include <linux/err.h>
 #include <linux/page-flags.h>
 #include <linux/page_ref.h>
-#include <linux/memremap.h>
 #include <linux/overflow.h>
 #include <linux/sizes.h>
 #include <linux/sched.h>
@@ -36,10 +32,7 @@
 struct mempolicy;
 struct anon_vma;
 struct anon_vma_chain;
-struct file_ra_state;
 struct user_struct;
-struct writeback_control;
-struct bdi_writeback;
 struct pt_regs;
 
 extern int sysctl_page_lock_unfairness;
@@ -216,18 +209,13 @@ int overcommit_kbytes_handler(struct ctl_table *, int, void *, size_t *,
 		loff_t *);
 int overcommit_policy_handler(struct ctl_table *, int, void *, size_t *,
 		loff_t *);
-/*
- * Any attempt to mark this function as static leads to build failure
- * when CONFIG_DEBUG_INFO_BTF is enabled because __add_to_page_cache_locked()
- * is referred to by BPF code. This must be visible for error injection.
- */
-int __add_to_page_cache_locked(struct page *page, struct address_space *mapping,
-		pgoff_t index, gfp_t gfp, void **shadowp);
 
 #if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP)
 #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))
+#define folio_page_idx(folio, p)	(page_to_pfn(p) - folio_pfn(folio))
 #else
 #define nth_page(page,n) ((page) + (n))
+#define folio_page_idx(folio, p)	((p) - &(folio)->page)
 #endif
 
 /* to align the pointer to the (next) page boundary */
@@ -237,6 +225,10 @@ int __add_to_page_cache_locked(struct page *page, struct address_space *mapping,
 #define PAGE_ALIGNED(addr)	IS_ALIGNED((unsigned long)(addr), PAGE_SIZE)
 
 #define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
+static inline struct folio *lru_to_folio(struct list_head *head)
+{
+	return list_entry((head)->prev, struct folio, lru);
+}
 
 void setup_initial_init_mm(void *start_code, void *end_code,
 			   void *end_data, void *brk);
@@ -434,51 +426,6 @@ extern unsigned int kobjsize(const void *objp);
  */
 extern pgprot_t protection_map[16];
 
-/**
- * enum fault_flag - Fault flag definitions.
- * @FAULT_FLAG_WRITE: Fault was a write fault.
- * @FAULT_FLAG_MKWRITE: Fault was mkwrite of existing PTE.
- * @FAULT_FLAG_ALLOW_RETRY: Allow to retry the fault if blocked.
- * @FAULT_FLAG_RETRY_NOWAIT: Don't drop mmap_lock and wait when retrying.
- * @FAULT_FLAG_KILLABLE: The fault task is in SIGKILL killable region.
- * @FAULT_FLAG_TRIED: The fault has been tried once.
- * @FAULT_FLAG_USER: The fault originated in userspace.
- * @FAULT_FLAG_REMOTE: The fault is not for current task/mm.
- * @FAULT_FLAG_INSTRUCTION: The fault was during an instruction fetch.
- * @FAULT_FLAG_INTERRUPTIBLE: The fault can be interrupted by non-fatal signals.
- *
- * About @FAULT_FLAG_ALLOW_RETRY and @FAULT_FLAG_TRIED: we can specify
- * whether we would allow page faults to retry by specifying these two
- * fault flags correctly.  Currently there can be three legal combinations:
- *
- * (a) ALLOW_RETRY and !TRIED:  this means the page fault allows retry, and
- *                              this is the first try
- *
- * (b) ALLOW_RETRY and TRIED:   this means the page fault allows retry, and
- *                              we've already tried at least once
- *
- * (c) !ALLOW_RETRY and !TRIED: this means the page fault does not allow retry
- *
- * The unlisted combination (!ALLOW_RETRY && TRIED) is illegal and should never
- * be used.  Note that page faults can be allowed to retry for multiple times,
- * in which case we'll have an initial fault with flags (a) then later on
- * continuous faults with flags (b).  We should always try to detect pending
- * signals before a retry to make sure the continuous page faults can still be
- * interrupted if necessary.
- */
-enum fault_flag {
-	FAULT_FLAG_WRITE =		1 << 0,
-	FAULT_FLAG_MKWRITE =		1 << 1,
-	FAULT_FLAG_ALLOW_RETRY =	1 << 2,
-	FAULT_FLAG_RETRY_NOWAIT = 	1 << 3,
-	FAULT_FLAG_KILLABLE =		1 << 4,
-	FAULT_FLAG_TRIED = 		1 << 5,
-	FAULT_FLAG_USER =		1 << 6,
-	FAULT_FLAG_REMOTE =		1 << 7,
-	FAULT_FLAG_INSTRUCTION =	1 << 8,
-	FAULT_FLAG_INTERRUPTIBLE =	1 << 9,
-};
-
 /*
  * The default fault flags that should be used by most of the
  * arch-specific page fault handlers.
@@ -533,7 +480,8 @@ struct vm_fault {
 		struct vm_area_struct *vma;	/* Target VMA */
 		gfp_t gfp_mask;			/* gfp mask to be used for allocations */
 		pgoff_t pgoff;			/* Logical page offset based on vma */
-		unsigned long address;		/* Faulting virtual address */
+		unsigned long address;		/* Faulting virtual address - masked */
+		unsigned long real_address;	/* Faulting virtual address - unmasked */
 	};
 	enum fault_flag flags;		/* FAULT_FLAG_xxx flags
 					 * XXX: should really be 'const' */
@@ -587,6 +535,10 @@ enum page_entry_size {
  */
 struct vm_operations_struct {
 	void (*open)(struct vm_area_struct * area);
+	/**
+	 * @close: Called when the VMA is being removed from the MM.
+	 * Context: User context.  May sleep.  Caller holds mmap_lock.
+	 */
 	void (*close)(struct vm_area_struct * area);
 	/* Called any time before splitting to check if it's allowed */
 	int (*may_split)(struct vm_area_struct *area, unsigned long addr);
@@ -724,6 +676,27 @@ int vma_is_stack_for_current(struct vm_area_struct *vma);
 struct mmu_gather;
 struct inode;
 
+static inline unsigned int compound_order(struct page *page)
+{
+	if (!PageHead(page))
+		return 0;
+	return page[1].compound_order;
+}
+
+/**
+ * folio_order - The allocation order of a folio.
+ * @folio: The folio.
+ *
+ * A folio is composed of 2^order pages.  See get_order() for the definition
+ * of order.
+ *
+ * Return: The order of the folio.
+ */
+static inline unsigned int folio_order(struct folio *folio)
+{
+	return compound_order(&folio->page);
+}
+
 #include <linux/huge_mm.h>
 
 /*
@@ -748,13 +721,18 @@ static inline int put_page_testzero(struct page *page)
 	return page_ref_dec_and_test(page);
 }
 
+static inline int folio_put_testzero(struct folio *folio)
+{
+	return put_page_testzero(&folio->page);
+}
+
 /*
  * Try to grab a ref unless the page has a refcount of zero, return false if
  * that is the case.
  * This can be called when MMU is off so it must not access
  * any of the virtual mappings.
  */
-static inline int get_page_unless_zero(struct page *page)
+static inline bool get_page_unless_zero(struct page *page)
 {
 	return page_ref_add_unless(page, 1, 0);
 }
@@ -799,55 +777,26 @@ static inline int is_vmalloc_or_module_addr(const void *x)
 }
 #endif
 
-extern void *kvmalloc_node(size_t size, gfp_t flags, int node);
-static inline void *kvmalloc(size_t size, gfp_t flags)
-{
-	return kvmalloc_node(size, flags, NUMA_NO_NODE);
-}
-static inline void *kvzalloc_node(size_t size, gfp_t flags, int node)
-{
-	return kvmalloc_node(size, flags | __GFP_ZERO, node);
-}
-static inline void *kvzalloc(size_t size, gfp_t flags)
-{
-	return kvmalloc(size, flags | __GFP_ZERO);
-}
-
-static inline void *kvmalloc_array(size_t n, size_t size, gfp_t flags)
-{
-	size_t bytes;
-
-	if (unlikely(check_mul_overflow(n, size, &bytes)))
-		return NULL;
-
-	return kvmalloc(bytes, flags);
-}
-
-static inline void *kvcalloc(size_t n, size_t size, gfp_t flags)
-{
-	return kvmalloc_array(n, size, flags | __GFP_ZERO);
-}
-
-extern void *kvrealloc(const void *p, size_t oldsize, size_t newsize,
-		gfp_t flags);
-extern void kvfree(const void *addr);
-extern void kvfree_sensitive(const void *addr, size_t len);
-
-static inline int head_compound_mapcount(struct page *head)
+/*
+ * How many times the entire folio is mapped as a single unit (eg by a
+ * PMD or PUD entry).  This is probably not what you want, except for
+ * debugging purposes; look at folio_mapcount() or page_mapcount()
+ * instead.
+ */
+static inline int folio_entire_mapcount(struct folio *folio)
 {
-	return atomic_read(compound_mapcount_ptr(head)) + 1;
+	VM_BUG_ON_FOLIO(!folio_test_large(folio), folio);
+	return atomic_read(folio_mapcount_ptr(folio)) + 1;
 }
 
 /*
  * Mapcount of compound page as a whole, does not include mapped sub-pages.
  *
- * Must be called only for compound pages or any their tail sub-pages.
+ * Must be called only for compound pages.
  */
 static inline int compound_mapcount(struct page *page)
 {
-	VM_BUG_ON_PAGE(!PageCompound(page), page);
-	page = compound_head(page);
-	return head_compound_mapcount(page);
+	return folio_entire_mapcount(page_folio(page));
 }
 
 /*
@@ -877,21 +826,18 @@ static inline int page_mapcount(struct page *page)
 	return atomic_read(&page->_mapcount) + 1;
 }
 
+int folio_mapcount(struct folio *folio);
+
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
-int total_mapcount(struct page *page);
-int page_trans_huge_mapcount(struct page *page, int *total_mapcount);
-#else
 static inline int total_mapcount(struct page *page)
 {
-	return page_mapcount(page);
+	return folio_mapcount(page_folio(page));
 }
-static inline int page_trans_huge_mapcount(struct page *page,
-					   int *total_mapcount)
+
+#else
+static inline int total_mapcount(struct page *page)
 {
-	int mapcount = page_mapcount(page);
-	if (total_mapcount)
-		*total_mapcount = mapcount;
-	return mapcount;
+	return page_mapcount(page);
 }
 #endif
 
@@ -902,12 +848,21 @@ static inline struct page *virt_to_head_page(const void *x)
 	return compound_head(page);
 }
 
+static inline struct folio *virt_to_folio(const void *x)
+{
+	struct page *page = virt_to_page(x);
+
+	return page_folio(page);
+}
+
 void __put_page(struct page *page);
 
 void put_pages_list(struct list_head *pages);
 
 void split_page(struct page *page, unsigned int order);
-void copy_huge_page(struct page *dst, struct page *src);
+void folio_copy(struct folio *dst, struct folio *src);
+
+unsigned long nr_free_buffer_pages(void);
 
 /*
  * Compound pages have a destructor function.  Provide a
@@ -943,40 +898,17 @@ static inline void destroy_compound_page(struct page *page)
 	compound_page_dtors[page[1].compound_dtor](page);
 }
 
-static inline unsigned int compound_order(struct page *page)
-{
-	if (!PageHead(page))
-		return 0;
-	return page[1].compound_order;
-}
-
-static inline bool hpage_pincount_available(struct page *page)
-{
-	/*
-	 * Can the page->hpage_pinned_refcount field be used? That field is in
-	 * the 3rd page of the compound page, so the smallest (2-page) compound
-	 * pages cannot support it.
-	 */
-	page = compound_head(page);
-	return PageCompound(page) && compound_order(page) > 1;
-}
-
 static inline int head_compound_pincount(struct page *head)
 {
 	return atomic_read(compound_pincount_ptr(head));
 }
 
-static inline int compound_pincount(struct page *page)
-{
-	VM_BUG_ON_PAGE(!hpage_pincount_available(page), page);
-	page = compound_head(page);
-	return head_compound_pincount(page);
-}
-
 static inline void set_compound_order(struct page *page, unsigned int order)
 {
 	page[1].compound_order = order;
+#ifdef CONFIG_64BIT
 	page[1].compound_nr = 1U << order;
+#endif
 }
 
 /* Returns the number of pages in this potentially compound page. */
@@ -984,7 +916,11 @@ static inline unsigned long compound_nr(struct page *page)
 {
 	if (!PageHead(page))
 		return 1;
+#ifdef CONFIG_64BIT
 	return page[1].compound_nr;
+#else
+	return 1UL << compound_order(page);
+#endif
 }
 
 /* Returns the number of bytes in this potentially compound page. */
@@ -999,6 +935,37 @@ static inline unsigned int page_shift(struct page *page)
 	return PAGE_SHIFT + compound_order(page);
 }
 
+/**
+ * thp_order - Order of a transparent huge page.
+ * @page: Head page of a transparent huge page.
+ */
+static inline unsigned int thp_order(struct page *page)
+{
+	VM_BUG_ON_PGFLAGS(PageTail(page), page);
+	return compound_order(page);
+}
+
+/**
+ * thp_nr_pages - The number of regular pages in this huge page.
+ * @page: The head page of a huge page.
+ */
+static inline int thp_nr_pages(struct page *page)
+{
+	VM_BUG_ON_PGFLAGS(PageTail(page), page);
+	return compound_nr(page);
+}
+
+/**
+ * thp_size - Size of a transparent huge page.
+ * @page: Head page of a transparent huge page.
+ *
+ * Return: Number of bytes in this page.
+ */
+static inline unsigned long thp_size(struct page *page)
+{
+	return PAGE_SIZE << thp_order(page);
+}
+
 void free_compound_page(struct page *page);
 
 #ifdef CONFIG_MMU
@@ -1131,6 +1098,11 @@ static inline enum zone_type page_zonenum(const struct page *page)
 	return (page->flags >> ZONES_PGSHIFT) & ZONES_MASK;
 }
 
+static inline enum zone_type folio_zonenum(const struct folio *folio)
+{
+	return page_zonenum(&folio->page);
+}
+
 #ifdef CONFIG_ZONE_DEVICE
 static inline bool is_zone_device_page(const struct page *page)
 {
@@ -1145,79 +1117,60 @@ static inline bool is_zone_device_page(const struct page *page)
 }
 #endif
 
+static inline bool folio_is_zone_device(const struct folio *folio)
+{
+	return is_zone_device_page(&folio->page);
+}
+
 static inline bool is_zone_movable_page(const struct page *page)
 {
 	return page_zonenum(page) == ZONE_MOVABLE;
 }
 
-#ifdef CONFIG_DEV_PAGEMAP_OPS
-void free_devmap_managed_page(struct page *page);
+#if defined(CONFIG_ZONE_DEVICE) && defined(CONFIG_FS_DAX)
 DECLARE_STATIC_KEY_FALSE(devmap_managed_key);
 
-static inline bool page_is_devmap_managed(struct page *page)
+bool __put_devmap_managed_page(struct page *page);
+static inline bool put_devmap_managed_page(struct page *page)
 {
 	if (!static_branch_unlikely(&devmap_managed_key))
 		return false;
 	if (!is_zone_device_page(page))
 		return false;
-	switch (page->pgmap->type) {
-	case MEMORY_DEVICE_PRIVATE:
-	case MEMORY_DEVICE_FS_DAX:
-		return true;
-	default:
-		break;
-	}
-	return false;
+	return __put_devmap_managed_page(page);
 }
 
-void put_devmap_managed_page(struct page *page);
-
-#else /* CONFIG_DEV_PAGEMAP_OPS */
-static inline bool page_is_devmap_managed(struct page *page)
+#else /* CONFIG_ZONE_DEVICE && CONFIG_FS_DAX */
+static inline bool put_devmap_managed_page(struct page *page)
 {
 	return false;
 }
+#endif /* CONFIG_ZONE_DEVICE && CONFIG_FS_DAX */
 
-static inline void put_devmap_managed_page(struct page *page)
-{
-}
-#endif /* CONFIG_DEV_PAGEMAP_OPS */
-
-static inline bool is_device_private_page(const struct page *page)
-{
-	return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
-		IS_ENABLED(CONFIG_DEVICE_PRIVATE) &&
-		is_zone_device_page(page) &&
-		page->pgmap->type == MEMORY_DEVICE_PRIVATE;
-}
+/* 127: arbitrary random number, small enough to assemble well */
+#define folio_ref_zero_or_close_to_overflow(folio) \
+	((unsigned int) folio_ref_count(folio) + 127u <= 127u)
 
-static inline bool is_pci_p2pdma_page(const struct page *page)
+/**
+ * folio_get - Increment the reference count on a folio.
+ * @folio: The folio.
+ *
+ * Context: May be called in any context, as long as you know that
+ * you have a refcount on the folio.  If you do not already have one,
+ * folio_try_get() may be the right interface for you to use.
+ */
+static inline void folio_get(struct folio *folio)
 {
-	return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
-		IS_ENABLED(CONFIG_PCI_P2PDMA) &&
-		is_zone_device_page(page) &&
-		page->pgmap->type == MEMORY_DEVICE_PCI_P2PDMA;
+	VM_BUG_ON_FOLIO(folio_ref_zero_or_close_to_overflow(folio), folio);
+	folio_ref_inc(folio);
 }
 
-/* 127: arbitrary random number, small enough to assemble well */
-#define page_ref_zero_or_close_to_overflow(page) \
-	((unsigned int) page_ref_count(page) + 127u <= 127u)
-
 static inline void get_page(struct page *page)
 {
-	page = compound_head(page);
-	/*
-	 * Getting a normal page or the head of a compound page
-	 * requires to already have an elevated page->_refcount.
-	 */
-	VM_BUG_ON_PAGE(page_ref_zero_or_close_to_overflow(page), page);
-	page_ref_inc(page);
+	folio_get(page_folio(page));
 }
 
 bool __must_check try_grab_page(struct page *page, unsigned int flags);
-struct page *try_grab_compound_head(struct page *page, int refs,
-				    unsigned int flags);
-
 
 static inline __must_check bool try_get_page(struct page *page)
 {
@@ -1228,23 +1181,56 @@ static inline __must_check bool try_get_page(struct page *page)
 	return true;
 }
 
+/**
+ * folio_put - Decrement the reference count on a folio.
+ * @folio: The folio.
+ *
+ * If the folio's reference count reaches zero, the memory will be
+ * released back to the page allocator and may be used by another
+ * allocation immediately.  Do not access the memory or the struct folio
+ * after calling folio_put() unless you can be sure that it wasn't the
+ * last reference.
+ *
+ * Context: May be called in process or interrupt context, but not in NMI
+ * context.  May be called while holding a spinlock.
+ */
+static inline void folio_put(struct folio *folio)
+{
+	if (folio_put_testzero(folio))
+		__put_page(&folio->page);
+}
+
+/**
+ * folio_put_refs - Reduce the reference count on a folio.
+ * @folio: The folio.
+ * @refs: The amount to subtract from the folio's reference count.
+ *
+ * If the folio's reference count reaches zero, the memory will be
+ * released back to the page allocator and may be used by another
+ * allocation immediately.  Do not access the memory or the struct folio
+ * after calling folio_put_refs() unless you can be sure that these weren't
+ * the last references.
+ *
+ * Context: May be called in process or interrupt context, but not in NMI
+ * context.  May be called while holding a spinlock.
+ */
+static inline void folio_put_refs(struct folio *folio, int refs)
+{
+	if (folio_ref_sub_and_test(folio, refs))
+		__put_page(&folio->page);
+}
+
 static inline void put_page(struct page *page)
 {
-	page = compound_head(page);
+	struct folio *folio = page_folio(page);
 
 	/*
-	 * For devmap managed pages we need to catch refcount transition from
-	 * 2 to 1, when refcount reach one it means the page is free and we
-	 * need to inform the device driver through callback. See
-	 * include/linux/memremap.h and HMM for details.
+	 * For some devmap managed pages we need to catch refcount transition
+	 * from 2 to 1:
 	 */
-	if (page_is_devmap_managed(page)) {
-		put_devmap_managed_page(page);
+	if (put_devmap_managed_page(&folio->page))
 		return;
-	}
-
-	if (put_page_testzero(page))
-		__put_page(page);
+	folio_put(folio);
 }
 
 /*
@@ -1273,10 +1259,9 @@ static inline void put_page(struct page *page)
  * applications that don't have huge page reference counts, this won't be an
  * issue.
  *
- * Locking: the lockless algorithm described in page_cache_get_speculative()
- * and page_cache_gup_pin_speculative() provides safe operation for
- * get_user_pages and page_mkclean and other calls that race to set up page
- * table entries.
+ * Locking: the lockless algorithm described in folio_try_get_rcu()
+ * provides safe operation for get_user_pages(), page_mkclean() and
+ * other calls that race to set up page table entries.
  */
 #define GUP_PIN_COUNTING_BIAS (1U << 10)
 
@@ -1287,70 +1272,11 @@ void unpin_user_page_range_dirty_lock(struct page *page, unsigned long npages,
 				      bool make_dirty);
 void unpin_user_pages(struct page **pages, unsigned long npages);
 
-/**
- * page_maybe_dma_pinned - Report if a page is pinned for DMA.
- * @page: The page.
- *
- * This function checks if a page has been pinned via a call to
- * a function in the pin_user_pages() family.
- *
- * For non-huge pages, the return value is partially fuzzy: false is not fuzzy,
- * because it means "definitely not pinned for DMA", but true means "probably
- * pinned for DMA, but possibly a false positive due to having at least
- * GUP_PIN_COUNTING_BIAS worth of normal page references".
- *
- * False positives are OK, because: a) it's unlikely for a page to get that many
- * refcounts, and b) all the callers of this routine are expected to be able to
- * deal gracefully with a false positive.
- *
- * For huge pages, the result will be exactly correct. That's because we have
- * more tracking data available: the 3rd struct page in the compound page is
- * used to track the pincount (instead using of the GUP_PIN_COUNTING_BIAS
- * scheme).
- *
- * For more information, please see Documentation/core-api/pin_user_pages.rst.
- *
- * Return: True, if it is likely that the page has been "dma-pinned".
- * False, if the page is definitely not dma-pinned.
- */
-static inline bool page_maybe_dma_pinned(struct page *page)
-{
-	if (hpage_pincount_available(page))
-		return compound_pincount(page) > 0;
-
-	/*
-	 * page_ref_count() is signed. If that refcount overflows, then
-	 * page_ref_count() returns a negative value, and callers will avoid
-	 * further incrementing the refcount.
-	 *
-	 * Here, for that overflow case, use the signed bit to count a little
-	 * bit higher via unsigned math, and thus still get an accurate result.
-	 */
-	return ((unsigned int)page_ref_count(compound_head(page))) >=
-		GUP_PIN_COUNTING_BIAS;
-}
-
 static inline bool is_cow_mapping(vm_flags_t flags)
 {
 	return (flags & (VM_SHARED | VM_MAYWRITE)) == VM_MAYWRITE;
 }
 
-/*
- * This should most likely only be called during fork() to see whether we
- * should break the cow immediately for a page on the src mm.
- */
-static inline bool page_needs_cow_for_dma(struct vm_area_struct *vma,
-					  struct page *page)
-{
-	if (!is_cow_mapping(vma->vm_flags))
-		return false;
-
-	if (!test_bit(MMF_HAS_PINNED, &vma->vm_mm->flags))
-		return false;
-
-	return page_maybe_dma_pinned(page);
-}
-
 #if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP)
 #define SECTION_IN_PAGE_FLAGS
 #endif
@@ -1379,6 +1305,11 @@ static inline int page_to_nid(const struct page *page)
 }
 #endif
 
+static inline int folio_nid(const struct folio *folio)
+{
+	return page_to_nid(&folio->page);
+}
+
 #ifdef CONFIG_NUMA_BALANCING
 static inline int cpu_pid_to_cpupid(int cpu, int pid)
 {
@@ -1511,11 +1442,18 @@ static inline u8 page_kasan_tag(const struct page *page)
 
 static inline void page_kasan_tag_set(struct page *page, u8 tag)
 {
-	if (kasan_enabled()) {
-		tag ^= 0xff;
-		page->flags &= ~(KASAN_TAG_MASK << KASAN_TAG_PGSHIFT);
-		page->flags |= (tag & KASAN_TAG_MASK) << KASAN_TAG_PGSHIFT;
-	}
+	unsigned long old_flags, flags;
+
+	if (!kasan_enabled())
+		return;
+
+	tag ^= 0xff;
+	old_flags = READ_ONCE(page->flags);
+	do {
+		flags = old_flags;
+		flags &= ~(KASAN_TAG_MASK << KASAN_TAG_PGSHIFT);
+		flags |= (tag & KASAN_TAG_MASK) << KASAN_TAG_PGSHIFT;
+	} while (unlikely(!try_cmpxchg(&page->flags, &old_flags, flags)));
 }
 
 static inline void page_kasan_tag_reset(struct page *page)
@@ -1546,6 +1484,16 @@ static inline pg_data_t *page_pgdat(const struct page *page)
 	return NODE_DATA(page_to_nid(page));
 }
 
+static inline struct zone *folio_zone(const struct folio *folio)
+{
+	return page_zone(&folio->page);
+}
+
+static inline pg_data_t *folio_pgdat(const struct folio *folio)
+{
+	return page_pgdat(&folio->page);
+}
+
 #ifdef SECTION_IN_PAGE_FLAGS
 static inline void set_page_section(struct page *page, unsigned long section)
 {
@@ -1559,6 +1507,88 @@ static inline unsigned long page_to_section(const struct page *page)
 }
 #endif
 
+/**
+ * folio_pfn - Return the Page Frame Number of a folio.
+ * @folio: The folio.
+ *
+ * A folio may contain multiple pages.  The pages have consecutive
+ * Page Frame Numbers.
+ *
+ * Return: The Page Frame Number of the first page in the folio.
+ */
+static inline unsigned long folio_pfn(struct folio *folio)
+{
+	return page_to_pfn(&folio->page);
+}
+
+static inline atomic_t *folio_pincount_ptr(struct folio *folio)
+{
+	return &folio_page(folio, 1)->compound_pincount;
+}
+
+/**
+ * folio_maybe_dma_pinned - Report if a folio may be pinned for DMA.
+ * @folio: The folio.
+ *
+ * This function checks if a folio has been pinned via a call to
+ * a function in the pin_user_pages() family.
+ *
+ * For small folios, the return value is partially fuzzy: false is not fuzzy,
+ * because it means "definitely not pinned for DMA", but true means "probably
+ * pinned for DMA, but possibly a false positive due to having at least
+ * GUP_PIN_COUNTING_BIAS worth of normal folio references".
+ *
+ * False positives are OK, because: a) it's unlikely for a folio to
+ * get that many refcounts, and b) all the callers of this routine are
+ * expected to be able to deal gracefully with a false positive.
+ *
+ * For large folios, the result will be exactly correct. That's because
+ * we have more tracking data available: the compound_pincount is used
+ * instead of the GUP_PIN_COUNTING_BIAS scheme.
+ *
+ * For more information, please see Documentation/core-api/pin_user_pages.rst.
+ *
+ * Return: True, if it is likely that the page has been "dma-pinned".
+ * False, if the page is definitely not dma-pinned.
+ */
+static inline bool folio_maybe_dma_pinned(struct folio *folio)
+{
+	if (folio_test_large(folio))
+		return atomic_read(folio_pincount_ptr(folio)) > 0;
+
+	/*
+	 * folio_ref_count() is signed. If that refcount overflows, then
+	 * folio_ref_count() returns a negative value, and callers will avoid
+	 * further incrementing the refcount.
+	 *
+	 * Here, for that overflow case, use the sign bit to count a little
+	 * bit higher via unsigned math, and thus still get an accurate result.
+	 */
+	return ((unsigned int)folio_ref_count(folio)) >=
+		GUP_PIN_COUNTING_BIAS;
+}
+
+static inline bool page_maybe_dma_pinned(struct page *page)
+{
+	return folio_maybe_dma_pinned(page_folio(page));
+}
+
+/*
+ * This should most likely only be called during fork() to see whether we
+ * should break the cow immediately for a page on the src mm.
+ */
+static inline bool page_needs_cow_for_dma(struct vm_area_struct *vma,
+					  struct page *page)
+{
+	if (!is_cow_mapping(vma->vm_flags))
+		return false;
+
+	if (!test_bit(MMF_HAS_PINNED, &vma->vm_mm->flags))
+		return false;
+
+	return page_maybe_dma_pinned(page);
+}
+
 /* MIGRATE_CMA and ZONE_MOVABLE do not allow pin pages */
 #ifdef CONFIG_MIGRATION
 static inline bool is_pinnable_page(struct page *page)
@@ -1573,6 +1603,11 @@ static inline bool is_pinnable_page(struct page *page)
 }
 #endif
 
+static inline bool folio_is_pinnable(struct folio *folio)
+{
+	return is_pinnable_page(&folio->page);
+}
+
 static inline void set_page_zone(struct page *page, enum zone_type zone)
 {
 	page->flags &= ~(ZONES_MASK << ZONES_PGSHIFT);
@@ -1595,6 +1630,89 @@ static inline void set_page_links(struct page *page, enum zone_type zone,
 #endif
 }
 
+/**
+ * folio_nr_pages - The number of pages in the folio.
+ * @folio: The folio.
+ *
+ * Return: A positive power of two.
+ */
+static inline long folio_nr_pages(struct folio *folio)
+{
+	return compound_nr(&folio->page);
+}
+
+/**
+ * folio_next - Move to the next physical folio.
+ * @folio: The folio we're currently operating on.
+ *
+ * If you have physically contiguous memory which may span more than
+ * one folio (eg a &struct bio_vec), use this function to move from one
+ * folio to the next.  Do not use it if the memory is only virtually
+ * contiguous as the folios are almost certainly not adjacent to each
+ * other.  This is the folio equivalent to writing ``page++``.
+ *
+ * Context: We assume that the folios are refcounted and/or locked at a
+ * higher level and do not adjust the reference counts.
+ * Return: The next struct folio.
+ */
+static inline struct folio *folio_next(struct folio *folio)
+{
+	return (struct folio *)folio_page(folio, folio_nr_pages(folio));
+}
+
+/**
+ * folio_shift - The size of the memory described by this folio.
+ * @folio: The folio.
+ *
+ * A folio represents a number of bytes which is a power-of-two in size.
+ * This function tells you which power-of-two the folio is.  See also
+ * folio_size() and folio_order().
+ *
+ * Context: The caller should have a reference on the folio to prevent
+ * it from being split.  It is not necessary for the folio to be locked.
+ * Return: The base-2 logarithm of the size of this folio.
+ */
+static inline unsigned int folio_shift(struct folio *folio)
+{
+	return PAGE_SHIFT + folio_order(folio);
+}
+
+/**
+ * folio_size - The number of bytes in a folio.
+ * @folio: The folio.
+ *
+ * Context: The caller should have a reference on the folio to prevent
+ * it from being split.  It is not necessary for the folio to be locked.
+ * Return: The number of bytes in this folio.
+ */
+static inline size_t folio_size(struct folio *folio)
+{
+	return PAGE_SIZE << folio_order(folio);
+}
+
+#ifndef HAVE_ARCH_MAKE_PAGE_ACCESSIBLE
+static inline int arch_make_page_accessible(struct page *page)
+{
+	return 0;
+}
+#endif
+
+#ifndef HAVE_ARCH_MAKE_FOLIO_ACCESSIBLE
+static inline int arch_make_folio_accessible(struct folio *folio)
+{
+	int ret;
+	long i, nr = folio_nr_pages(folio);
+
+	for (i = 0; i < nr; i++) {
+		ret = arch_make_page_accessible(folio_page(folio, i));
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+#endif
+
 /*
  * Some inline functions in vmstat.h depend on page_zone()
  */
@@ -1633,21 +1751,12 @@ void page_address_init(void);
 #define page_address_init()  do { } while(0)
 #endif
 
-extern void *page_rmapping(struct page *page);
-extern struct anon_vma *page_anon_vma(struct page *page);
-extern struct address_space *page_mapping(struct page *page);
-
-extern struct address_space *__page_file_mapping(struct page *);
-
-static inline
-struct address_space *page_file_mapping(struct page *page)
+static inline void *folio_address(const struct folio *folio)
 {
-	if (unlikely(PageSwapCache(page)))
-		return __page_file_mapping(page);
-
-	return page->mapping;
+	return page_address(&folio->page);
 }
 
+extern void *page_rmapping(struct page *page);
 extern pgoff_t __page_file_index(struct page *page);
 
 /*
@@ -1662,7 +1771,7 @@ static inline pgoff_t page_index(struct page *page)
 }
 
 bool page_mapped(struct page *page);
-struct address_space *page_mapping(struct page *page);
+bool folio_mapped(struct folio *folio);
 
 /*
  * Return true only if the page has been allocated with
@@ -1700,6 +1809,7 @@ extern void pagefault_out_of_memory(void);
 
 #define offset_in_page(p)	((unsigned long)(p) & ~PAGE_MASK)
 #define offset_in_thp(page, p)	((unsigned long)(p) & (thp_size(page) - 1))
+#define offset_in_folio(folio, p) ((unsigned long)(p) & (folio_size(folio) - 1))
 
 /*
  * Flags passed to show_mem() and show_free_areas() to suppress output in
@@ -1717,16 +1827,6 @@ static inline bool can_do_mlock(void) { return false; }
 extern int user_shm_lock(size_t, struct ucounts *);
 extern void user_shm_unlock(size_t, struct ucounts *);
 
-/*
- * Parameter block passed down to zap_pte_range in exceptional cases.
- */
-struct zap_details {
-	struct address_space *check_mapping;	/* Check page->mapping if set */
-	pgoff_t	first_index;			/* Lowest page->index to unmap */
-	pgoff_t last_index;			/* Highest page->index to unmap */
-	struct page *single_page;		/* Locked page to be unmapped */
-};
-
 struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
 			     pte_t pte);
 struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long addr,
@@ -1761,9 +1861,7 @@ extern void truncate_pagecache(struct inode *inode, loff_t new);
 extern void truncate_setsize(struct inode *inode, loff_t newsize);
 void pagecache_isize_extended(struct inode *inode, loff_t from, loff_t to);
 void truncate_pagecache_range(struct inode *inode, loff_t offset, loff_t end);
-int truncate_inode_page(struct address_space *mapping, struct page *page);
 int generic_error_remove_page(struct address_space *mapping, struct page *page);
-int invalidate_inode_page(struct page *page);
 
 #ifdef CONFIG_MMU
 extern vm_fault_t handle_mm_fault(struct vm_area_struct *vma,
@@ -1772,7 +1870,6 @@ extern vm_fault_t handle_mm_fault(struct vm_area_struct *vma,
 extern int fixup_user_fault(struct mm_struct *mm,
 			    unsigned long address, unsigned int fault_flags,
 			    bool *unlocked);
-void unmap_mapping_page(struct page *page);
 void unmap_mapping_pages(struct address_space *mapping,
 		pgoff_t start, pgoff_t nr, bool even_cows);
 void unmap_mapping_range(struct address_space *mapping,
@@ -1793,7 +1890,6 @@ static inline int fixup_user_fault(struct mm_struct *mm, unsigned long address,
 	BUG();
 	return -EFAULT;
 }
-static inline void unmap_mapping_page(struct page *page) { }
 static inline void unmap_mapping_pages(struct address_space *mapping,
 		pgoff_t start, pgoff_t nr, bool even_cows) { }
 static inline void unmap_mapping_range(struct address_space *mapping,
@@ -1827,10 +1923,6 @@ long get_user_pages(unsigned long start, unsigned long nr_pages,
 long pin_user_pages(unsigned long start, unsigned long nr_pages,
 		    unsigned int gup_flags, struct page **pages,
 		    struct vm_area_struct **vmas);
-long get_user_pages_locked(unsigned long start, unsigned long nr_pages,
-		    unsigned int gup_flags, struct page **pages, int *locked);
-long pin_user_pages_locked(unsigned long start, unsigned long nr_pages,
-		    unsigned int gup_flags, struct page **pages, int *locked);
 long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages,
 		    struct page **pages, unsigned int gup_flags);
 long pin_user_pages_unlocked(unsigned long start, unsigned long nr_pages,
@@ -1850,24 +1942,9 @@ int get_kernel_pages(const struct kvec *iov, int nr_pages, int write,
 			struct page **pages);
 struct page *get_dump_page(unsigned long addr);
 
-extern int try_to_release_page(struct page * page, gfp_t gfp_mask);
-extern void do_invalidatepage(struct page *page, unsigned int offset,
-			      unsigned int length);
-
-int redirty_page_for_writepage(struct writeback_control *wbc,
-				struct page *page);
-void account_page_cleaned(struct page *page, struct address_space *mapping,
-			  struct bdi_writeback *wb);
-int set_page_dirty(struct page *page);
+bool folio_mark_dirty(struct folio *folio);
+bool set_page_dirty(struct page *page);
 int set_page_dirty_lock(struct page *page);
-void __cancel_dirty_page(struct page *page);
-static inline void cancel_dirty_page(struct page *page)
-{
-	/* Avoid atomic ops, locking, etc. when not actually needed. */
-	if (PageDirty(page))
-		__cancel_dirty_page(page);
-}
-int clear_page_dirty_for_io(struct page *page);
 
 int get_cmdline(struct task_struct *task, char *buffer, int buflen);
 
@@ -2376,7 +2453,6 @@ static inline spinlock_t *pud_lock(struct mm_struct *mm, pud_t *pud)
 }
 
 extern void __init pagecache_init(void);
-extern void __init free_area_init_memoryless_node(int nid);
 extern void free_initmem(void);
 
 /*
@@ -2447,7 +2523,7 @@ static inline unsigned long get_num_physpages(void)
  * unsigned long max_zone_pfns[MAX_NR_ZONES] = {max_dma, max_normal_pfn,
  * 							 max_highmem_pfn};
  * for_each_valid_physical_page_range()
- * 	memblock_add_node(base, size, nid)
+ *	memblock_add_node(base, size, nid, MEMBLOCK_NONE)
  * free_area_init(max_zone_pfns);
  */
 void free_area_init(unsigned long *max_zone_pfn);
@@ -2475,6 +2551,7 @@ extern void memmap_init_range(unsigned long, int, unsigned long,
 		unsigned long, unsigned long, enum meminit_context,
 		struct vmem_altmap *, int migratetype);
 extern void setup_per_zone_wmarks(void);
+extern void calculate_min_free_kbytes(void);
 extern int __meminit init_per_zone_wmark_min(void);
 extern void mem_init(void);
 extern void __init mmap_init(void);
@@ -2548,7 +2625,7 @@ static inline int vma_adjust(struct vm_area_struct *vma, unsigned long start,
 extern struct vm_area_struct *vma_merge(struct mm_struct *,
 	struct vm_area_struct *prev, unsigned long addr, unsigned long end,
 	unsigned long vm_flags, struct anon_vma *, struct file *, pgoff_t,
-	struct mempolicy *, struct vm_userfaultfd_ctx);
+	struct mempolicy *, struct vm_userfaultfd_ctx, struct anon_vma_name *);
 extern struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *);
 extern int __split_vma(struct mm_struct *, struct vm_area_struct *,
 	unsigned long addr, int new_below);
@@ -2659,10 +2736,6 @@ extern vm_fault_t filemap_map_pages(struct vm_fault *vmf,
 		pgoff_t start_pgoff, pgoff_t end_pgoff);
 extern vm_fault_t filemap_page_mkwrite(struct vm_fault *vmf);
 
-/* mm/page-writeback.c */
-int __must_check write_one_page(struct page *page);
-void task_dirty_inc(struct task_struct *tsk);
-
 extern unsigned long stack_guard_gap;
 /* Generic expand stack which grows the stack according to GROWS{UP,DOWN} */
 extern int expand_stack(struct vm_area_struct *vma, unsigned long address);
@@ -2851,12 +2924,11 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
 #define FOLL_FORCE	0x10	/* get_user_pages read/write w/o permission */
 #define FOLL_NOWAIT	0x20	/* if a disk transfer is needed, start the IO
 				 * and return without waiting upon it */
-#define FOLL_POPULATE	0x40	/* fault in page */
+#define FOLL_NOFAULT	0x80	/* do not fault in pages */
 #define FOLL_HWPOISON	0x100	/* check page is hwpoisoned */
 #define FOLL_NUMA	0x200	/* force NUMA hinting page fault */
 #define FOLL_MIGRATION	0x400	/* wait for page to replace migration entry */
 #define FOLL_TRIED	0x800	/* a retry, previous pass started an IO */
-#define FOLL_MLOCK	0x1000	/* lock present pages */
 #define FOLL_REMOTE	0x2000	/* we are working on non-current tsk/mm */
 #define FOLL_COW	0x4000	/* internal GUP flag */
 #define FOLL_ANON	0x8000	/* don't do file mappings */
@@ -3060,7 +3132,6 @@ int drop_caches_sysctl_handler(struct ctl_table *, int, void *, size_t *,
 #endif
 
 void drop_slab(void);
-void drop_slab_node(int nid);
 
 #ifndef CONFIG_MMU
 #define randomize_va_space 0
@@ -3077,10 +3148,12 @@ static inline void print_vma_addr(char *prefix, unsigned long rip)
 }
 #endif
 
+#ifdef CONFIG_HUGETLB_PAGE_FREE_VMEMMAP
 int vmemmap_remap_free(unsigned long start, unsigned long end,
 		       unsigned long reuse);
 int vmemmap_remap_alloc(unsigned long start, unsigned long end,
 			unsigned long reuse, gfp_t gfp_mask);
+#endif
 
 void *sparse_buffer_alloc(unsigned long size);
 struct page * __populate_section_memmap(unsigned long pfn,
@@ -3113,6 +3186,7 @@ enum mf_flags {
 	MF_ACTION_REQUIRED = 1 << 1,
 	MF_MUST_KILL = 1 << 2,
 	MF_SOFT_OFFLINE = 1 << 3,
+	MF_UNPOISON = 1 << 4,
 };
 extern int memory_failure(unsigned long pfn, int flags);
 extern void memory_failure_queue(unsigned long pfn, int flags);
@@ -3123,7 +3197,28 @@ extern int sysctl_memory_failure_recovery;
 extern void shake_page(struct page *p);
 extern atomic_long_t num_poisoned_pages __read_mostly;
 extern int soft_offline_page(unsigned long pfn, int flags);
+#ifdef CONFIG_MEMORY_FAILURE
+extern int __get_huge_page_for_hwpoison(unsigned long pfn, int flags);
+#else
+static inline int __get_huge_page_for_hwpoison(unsigned long pfn, int flags)
+{
+	return 0;
+}
+#endif
+
+#ifndef arch_memory_failure
+static inline int arch_memory_failure(unsigned long pfn, int flags)
+{
+	return -ENXIO;
+}
+#endif
 
+#ifndef arch_is_platform_page
+static inline bool arch_is_platform_page(u64 paddr)
+{
+	return false;
+}
+#endif
 
 /*
  * Error handlers for various types of pages.
@@ -3140,7 +3235,6 @@ enum mf_action_page_type {
 	MF_MSG_KERNEL_HIGH_ORDER,
 	MF_MSG_SLAB,
 	MF_MSG_DIFFERENT_COMPOUND,
-	MF_MSG_POISONED_HUGE,
 	MF_MSG_HUGE,
 	MF_MSG_FREE_HUGE,
 	MF_MSG_NON_PMD_HUGE,
@@ -3155,9 +3249,9 @@ enum mf_action_page_type {
 	MF_MSG_CLEAN_LRU,
 	MF_MSG_TRUNCATED_LRU,
 	MF_MSG_BUDDY,
-	MF_MSG_BUDDY_2ND,
 	MF_MSG_DAX,
 	MF_MSG_UNSPLIT_THP,
+	MF_MSG_DIFFERENT_PAGE_SIZE,
 	MF_MSG_UNKNOWN,
 };
 
@@ -3284,5 +3378,16 @@ static inline int seal_check_future_write(int seals, struct vm_area_struct *vma)
 	return 0;
 }
 
-#endif /* __KERNEL__ */
+#ifdef CONFIG_ANON_VMA_NAME
+int madvise_set_anon_name(struct mm_struct *mm, unsigned long start,
+			  unsigned long len_in,
+			  struct anon_vma_name *anon_name);
+#else
+static inline int
+madvise_set_anon_name(struct mm_struct *mm, unsigned long start,
+		      unsigned long len_in, struct anon_vma_name *anon_name) {
+	return 0;
+}
+#endif
+
 #endif /* _LINUX_MM_H */
diff --git a/include/linux/mm_api.h b/include/linux/mm_api.h
new file mode 100644
index 000000000000..a5ace2b198b8
--- /dev/null
+++ b/include/linux/mm_api.h
@@ -0,0 +1 @@
+#include <linux/mm.h>
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 355ea1ee32bd..ac32125745ab 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -2,31 +2,39 @@
 #ifndef LINUX_MM_INLINE_H
 #define LINUX_MM_INLINE_H
 
+#include <linux/atomic.h>
 #include <linux/huge_mm.h>
 #include <linux/swap.h>
+#include <linux/string.h>
 
 /**
- * page_is_file_lru - should the page be on a file LRU or anon LRU?
- * @page: the page to test
- *
- * Returns 1 if @page is a regular filesystem backed page cache page or a lazily
- * freed anonymous page (e.g. via MADV_FREE).  Returns 0 if @page is a normal
- * anonymous page, a tmpfs page or otherwise ram or swap backed page.  Used by
- * functions that manipulate the LRU lists, to sort a page onto the right LRU
- * list.
+ * folio_is_file_lru - Should the folio be on a file LRU or anon LRU?
+ * @folio: The folio to test.
  *
  * We would like to get this info without a page flag, but the state
- * needs to survive until the page is last deleted from the LRU, which
+ * needs to survive until the folio is last deleted from the LRU, which
  * could be as far down as __page_cache_release.
+ *
+ * Return: An integer (not a boolean!) used to sort a folio onto the
+ * right LRU list and to account folios correctly.
+ * 1 if @folio is a regular filesystem backed page cache folio
+ * or a lazily freed anonymous folio (e.g. via MADV_FREE).
+ * 0 if @folio is a normal anonymous folio, a tmpfs folio or otherwise
+ * ram or swap backed folio.
  */
+static inline int folio_is_file_lru(struct folio *folio)
+{
+	return !folio_test_swapbacked(folio);
+}
+
 static inline int page_is_file_lru(struct page *page)
 {
-	return !PageSwapBacked(page);
+	return folio_is_file_lru(page_folio(page));
 }
 
 static __always_inline void update_lru_size(struct lruvec *lruvec,
 				enum lru_list lru, enum zone_type zid,
-				int nr_pages)
+				long nr_pages)
 {
 	struct pglist_data *pgdat = lruvec_pgdat(lruvec);
 
@@ -39,69 +47,274 @@ static __always_inline void update_lru_size(struct lruvec *lruvec,
 }
 
 /**
- * __clear_page_lru_flags - clear page lru flags before releasing a page
- * @page: the page that was on lru and now has a zero reference
+ * __folio_clear_lru_flags - Clear page lru flags before releasing a page.
+ * @folio: The folio that was on lru and now has a zero reference.
  */
-static __always_inline void __clear_page_lru_flags(struct page *page)
+static __always_inline void __folio_clear_lru_flags(struct folio *folio)
 {
-	VM_BUG_ON_PAGE(!PageLRU(page), page);
+	VM_BUG_ON_FOLIO(!folio_test_lru(folio), folio);
 
-	__ClearPageLRU(page);
+	__folio_clear_lru(folio);
 
 	/* this shouldn't happen, so leave the flags to bad_page() */
-	if (PageActive(page) && PageUnevictable(page))
+	if (folio_test_active(folio) && folio_test_unevictable(folio))
 		return;
 
-	__ClearPageActive(page);
-	__ClearPageUnevictable(page);
+	__folio_clear_active(folio);
+	__folio_clear_unevictable(folio);
+}
+
+static __always_inline void __clear_page_lru_flags(struct page *page)
+{
+	__folio_clear_lru_flags(page_folio(page));
 }
 
 /**
- * page_lru - which LRU list should a page be on?
- * @page: the page to test
+ * folio_lru_list - Which LRU list should a folio be on?
+ * @folio: The folio to test.
  *
- * Returns the LRU list a page should be on, as an index
+ * Return: The LRU list a folio should be on, as an index
  * into the array of LRU lists.
  */
-static __always_inline enum lru_list page_lru(struct page *page)
+static __always_inline enum lru_list folio_lru_list(struct folio *folio)
 {
 	enum lru_list lru;
 
-	VM_BUG_ON_PAGE(PageActive(page) && PageUnevictable(page), page);
+	VM_BUG_ON_FOLIO(folio_test_active(folio) && folio_test_unevictable(folio), folio);
 
-	if (PageUnevictable(page))
+	if (folio_test_unevictable(folio))
 		return LRU_UNEVICTABLE;
 
-	lru = page_is_file_lru(page) ? LRU_INACTIVE_FILE : LRU_INACTIVE_ANON;
-	if (PageActive(page))
+	lru = folio_is_file_lru(folio) ? LRU_INACTIVE_FILE : LRU_INACTIVE_ANON;
+	if (folio_test_active(folio))
 		lru += LRU_ACTIVE;
 
 	return lru;
 }
 
+static __always_inline
+void lruvec_add_folio(struct lruvec *lruvec, struct folio *folio)
+{
+	enum lru_list lru = folio_lru_list(folio);
+
+	update_lru_size(lruvec, lru, folio_zonenum(folio),
+			folio_nr_pages(folio));
+	if (lru != LRU_UNEVICTABLE)
+		list_add(&folio->lru, &lruvec->lists[lru]);
+}
+
 static __always_inline void add_page_to_lru_list(struct page *page,
 				struct lruvec *lruvec)
 {
-	enum lru_list lru = page_lru(page);
+	lruvec_add_folio(lruvec, page_folio(page));
+}
+
+static __always_inline
+void lruvec_add_folio_tail(struct lruvec *lruvec, struct folio *folio)
+{
+	enum lru_list lru = folio_lru_list(folio);
 
-	update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page));
-	list_add(&page->lru, &lruvec->lists[lru]);
+	update_lru_size(lruvec, lru, folio_zonenum(folio),
+			folio_nr_pages(folio));
+	/* This is not expected to be used on LRU_UNEVICTABLE */
+	list_add_tail(&folio->lru, &lruvec->lists[lru]);
 }
 
 static __always_inline void add_page_to_lru_list_tail(struct page *page,
 				struct lruvec *lruvec)
 {
-	enum lru_list lru = page_lru(page);
+	lruvec_add_folio_tail(lruvec, page_folio(page));
+}
+
+static __always_inline
+void lruvec_del_folio(struct lruvec *lruvec, struct folio *folio)
+{
+	enum lru_list lru = folio_lru_list(folio);
 
-	update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page));
-	list_add_tail(&page->lru, &lruvec->lists[lru]);
+	if (lru != LRU_UNEVICTABLE)
+		list_del(&folio->lru);
+	update_lru_size(lruvec, lru, folio_zonenum(folio),
+			-folio_nr_pages(folio));
 }
 
 static __always_inline void del_page_from_lru_list(struct page *page,
 				struct lruvec *lruvec)
 {
-	list_del(&page->lru);
-	update_lru_size(lruvec, page_lru(page), page_zonenum(page),
-			-thp_nr_pages(page));
+	lruvec_del_folio(lruvec, page_folio(page));
+}
+
+#ifdef CONFIG_ANON_VMA_NAME
+/*
+ * mmap_lock should be read-locked when calling anon_vma_name(). Caller should
+ * either keep holding the lock while using the returned pointer or it should
+ * raise anon_vma_name refcount before releasing the lock.
+ */
+extern struct anon_vma_name *anon_vma_name(struct vm_area_struct *vma);
+extern struct anon_vma_name *anon_vma_name_alloc(const char *name);
+extern void anon_vma_name_free(struct kref *kref);
+
+/* mmap_lock should be read-locked */
+static inline void anon_vma_name_get(struct anon_vma_name *anon_name)
+{
+	if (anon_name)
+		kref_get(&anon_name->kref);
+}
+
+static inline void anon_vma_name_put(struct anon_vma_name *anon_name)
+{
+	if (anon_name)
+		kref_put(&anon_name->kref, anon_vma_name_free);
+}
+
+static inline
+struct anon_vma_name *anon_vma_name_reuse(struct anon_vma_name *anon_name)
+{
+	/* Prevent anon_name refcount saturation early on */
+	if (kref_read(&anon_name->kref) < REFCOUNT_MAX) {
+		anon_vma_name_get(anon_name);
+		return anon_name;
+
+	}
+	return anon_vma_name_alloc(anon_name->name);
+}
+
+static inline void dup_anon_vma_name(struct vm_area_struct *orig_vma,
+				     struct vm_area_struct *new_vma)
+{
+	struct anon_vma_name *anon_name = anon_vma_name(orig_vma);
+
+	if (anon_name)
+		new_vma->anon_name = anon_vma_name_reuse(anon_name);
 }
+
+static inline void free_anon_vma_name(struct vm_area_struct *vma)
+{
+	/*
+	 * Not using anon_vma_name because it generates a warning if mmap_lock
+	 * is not held, which might be the case here.
+	 */
+	if (!vma->vm_file)
+		anon_vma_name_put(vma->anon_name);
+}
+
+static inline bool anon_vma_name_eq(struct anon_vma_name *anon_name1,
+				    struct anon_vma_name *anon_name2)
+{
+	if (anon_name1 == anon_name2)
+		return true;
+
+	return anon_name1 && anon_name2 &&
+		!strcmp(anon_name1->name, anon_name2->name);
+}
+
+#else /* CONFIG_ANON_VMA_NAME */
+static inline struct anon_vma_name *anon_vma_name(struct vm_area_struct *vma)
+{
+	return NULL;
+}
+
+static inline struct anon_vma_name *anon_vma_name_alloc(const char *name)
+{
+	return NULL;
+}
+
+static inline void anon_vma_name_get(struct anon_vma_name *anon_name) {}
+static inline void anon_vma_name_put(struct anon_vma_name *anon_name) {}
+static inline void dup_anon_vma_name(struct vm_area_struct *orig_vma,
+				     struct vm_area_struct *new_vma) {}
+static inline void free_anon_vma_name(struct vm_area_struct *vma) {}
+
+static inline bool anon_vma_name_eq(struct anon_vma_name *anon_name1,
+				    struct anon_vma_name *anon_name2)
+{
+	return true;
+}
+
+#endif  /* CONFIG_ANON_VMA_NAME */
+
+static inline void init_tlb_flush_pending(struct mm_struct *mm)
+{
+	atomic_set(&mm->tlb_flush_pending, 0);
+}
+
+static inline void inc_tlb_flush_pending(struct mm_struct *mm)
+{
+	atomic_inc(&mm->tlb_flush_pending);
+	/*
+	 * The only time this value is relevant is when there are indeed pages
+	 * to flush. And we'll only flush pages after changing them, which
+	 * requires the PTL.
+	 *
+	 * So the ordering here is:
+	 *
+	 *	atomic_inc(&mm->tlb_flush_pending);
+	 *	spin_lock(&ptl);
+	 *	...
+	 *	set_pte_at();
+	 *	spin_unlock(&ptl);
+	 *
+	 *				spin_lock(&ptl)
+	 *				mm_tlb_flush_pending();
+	 *				....
+	 *				spin_unlock(&ptl);
+	 *
+	 *	flush_tlb_range();
+	 *	atomic_dec(&mm->tlb_flush_pending);
+	 *
+	 * Where the increment if constrained by the PTL unlock, it thus
+	 * ensures that the increment is visible if the PTE modification is
+	 * visible. After all, if there is no PTE modification, nobody cares
+	 * about TLB flushes either.
+	 *
+	 * This very much relies on users (mm_tlb_flush_pending() and
+	 * mm_tlb_flush_nested()) only caring about _specific_ PTEs (and
+	 * therefore specific PTLs), because with SPLIT_PTE_PTLOCKS and RCpc
+	 * locks (PPC) the unlock of one doesn't order against the lock of
+	 * another PTL.
+	 *
+	 * The decrement is ordered by the flush_tlb_range(), such that
+	 * mm_tlb_flush_pending() will not return false unless all flushes have
+	 * completed.
+	 */
+}
+
+static inline void dec_tlb_flush_pending(struct mm_struct *mm)
+{
+	/*
+	 * See inc_tlb_flush_pending().
+	 *
+	 * This cannot be smp_mb__before_atomic() because smp_mb() simply does
+	 * not order against TLB invalidate completion, which is what we need.
+	 *
+	 * Therefore we must rely on tlb_flush_*() to guarantee order.
+	 */
+	atomic_dec(&mm->tlb_flush_pending);
+}
+
+static inline bool mm_tlb_flush_pending(struct mm_struct *mm)
+{
+	/*
+	 * Must be called after having acquired the PTL; orders against that
+	 * PTLs release and therefore ensures that if we observe the modified
+	 * PTE we must also observe the increment from inc_tlb_flush_pending().
+	 *
+	 * That is, it only guarantees to return true if there is a flush
+	 * pending for _this_ PTL.
+	 */
+	return atomic_read(&mm->tlb_flush_pending);
+}
+
+static inline bool mm_tlb_flush_nested(struct mm_struct *mm)
+{
+	/*
+	 * Similar to mm_tlb_flush_pending(), we must have acquired the PTL
+	 * for which there is a TLB flush pending in order to guarantee
+	 * we've seen both that PTE modification and the increment.
+	 *
+	 * (no requirement on actually still holding the PTL, that is irrelevant)
+	 */
+	return atomic_read(&mm->tlb_flush_pending) > 1;
+}
+
+
 #endif
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 7f8ee09c711f..8834e38c06a4 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -5,6 +5,7 @@
 #include <linux/mm_types_task.h>
 
 #include <linux/auxvec.h>
+#include <linux/kref.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/rbtree.h>
@@ -12,6 +13,7 @@
 #include <linux/completion.h>
 #include <linux/cpumask.h>
 #include <linux/uprobes.h>
+#include <linux/rcupdate.h>
 #include <linux/page-flags-layout.h>
 #include <linux/workqueue.h>
 #include <linux/seqlock.h>
@@ -55,11 +57,11 @@ struct mem_cgroup;
  * in each subpage, but you may need to restore some of their values
  * afterwards.
  *
- * SLUB uses cmpxchg_double() to atomically update its freelist and
- * counters.  That requires that freelist & counters be adjacent and
- * double-word aligned.  We align all struct pages to double-word
- * boundaries, and ensure that 'freelist' is aligned within the
- * struct.
+ * SLUB uses cmpxchg_double() to atomically update its freelist and counters.
+ * That requires that freelist & counters in struct slab be adjacent and
+ * double-word aligned. Because struct slab currently just reinterprets the
+ * bits of struct page, we align all struct pages to double-word boundaries,
+ * and ensure that 'freelist' is aligned within struct slab.
  */
 #ifdef CONFIG_HAVE_ALIGNED_STRUCT_PAGE
 #define _struct_page_alignment	__aligned(2 * sizeof(unsigned long))
@@ -83,7 +85,16 @@ struct page {
 			 * lruvec->lru_lock.  Sometimes used as a generic list
 			 * by the page owner.
 			 */
-			struct list_head lru;
+			union {
+				struct list_head lru;
+				/* Or, for the Unevictable "LRU list" slot */
+				struct {
+					/* Always even, to negate PageTail */
+					void *__filler;
+					/* Count page's or folio's mlocks */
+					unsigned int mlock_count;
+				};
+			};
 			/* See page-flags.h for PAGE_MAPPING_FLAGS */
 			struct address_space *mapping;
 			pgoff_t index;		/* Our offset within mapping. */
@@ -117,33 +128,6 @@ struct page {
 				atomic_long_t pp_frag_count;
 			};
 		};
-		struct {	/* slab, slob and slub */
-			union {
-				struct list_head slab_list;
-				struct {	/* Partial pages */
-					struct page *next;
-#ifdef CONFIG_64BIT
-					int pages;	/* Nr of pages left */
-					int pobjects;	/* Approximate count */
-#else
-					short int pages;
-					short int pobjects;
-#endif
-				};
-			};
-			struct kmem_cache *slab_cache; /* not slob */
-			/* Double-word boundary */
-			void *freelist;		/* first free object */
-			union {
-				void *s_mem;	/* slab: first object */
-				unsigned long counters;		/* SLUB */
-				struct {			/* SLUB */
-					unsigned inuse:16;
-					unsigned objects:15;
-					unsigned frozen:1;
-				};
-			};
-		};
 		struct {	/* Tail pages of compound page */
 			unsigned long compound_head;	/* Bit zero is set */
 
@@ -151,11 +135,14 @@ struct page {
 			unsigned char compound_dtor;
 			unsigned char compound_order;
 			atomic_t compound_mapcount;
+			atomic_t compound_pincount;
+#ifdef CONFIG_64BIT
 			unsigned int compound_nr; /* 1 << compound_order */
+#endif
 		};
 		struct {	/* Second tail page of compound page */
 			unsigned long _compound_pad_1;	/* compound_head */
-			atomic_t hpage_pinned_refcount;
+			unsigned long _compound_pad_2;
 			/* For both global and memcg */
 			struct list_head deferred_list;
 		};
@@ -207,9 +194,6 @@ struct page {
 		 * which are currently stored here.
 		 */
 		unsigned int page_type;
-
-		unsigned int active;		/* SLAB */
-		int units;			/* SLOB */
 	};
 
 	/* Usage count. *DO NOT USE DIRECTLY*. See page_ref.h */
@@ -239,6 +223,79 @@ struct page {
 #endif
 } _struct_page_alignment;
 
+/**
+ * struct folio - Represents a contiguous set of bytes.
+ * @flags: Identical to the page flags.
+ * @lru: Least Recently Used list; tracks how recently this folio was used.
+ * @mapping: The file this page belongs to, or refers to the anon_vma for
+ *    anonymous memory.
+ * @index: Offset within the file, in units of pages.  For anonymous memory,
+ *    this is the index from the beginning of the mmap.
+ * @private: Filesystem per-folio data (see folio_attach_private()).
+ *    Used for swp_entry_t if folio_test_swapcache().
+ * @_mapcount: Do not access this member directly.  Use folio_mapcount() to
+ *    find out how many times this folio is mapped by userspace.
+ * @_refcount: Do not access this member directly.  Use folio_ref_count()
+ *    to find how many references there are to this folio.
+ * @memcg_data: Memory Control Group data.
+ *
+ * A folio is a physically, virtually and logically contiguous set
+ * of bytes.  It is a power-of-two in size, and it is aligned to that
+ * same power-of-two.  It is at least as large as %PAGE_SIZE.  If it is
+ * in the page cache, it is at a file offset which is a multiple of that
+ * power-of-two.  It may be mapped into userspace at an address which is
+ * at an arbitrary page offset, but its kernel virtual address is aligned
+ * to its size.
+ */
+struct folio {
+	/* private: don't document the anon union */
+	union {
+		struct {
+	/* public: */
+			unsigned long flags;
+			union {
+				struct list_head lru;
+				struct {
+					void *__filler;
+					unsigned int mlock_count;
+				};
+			};
+			struct address_space *mapping;
+			pgoff_t index;
+			void *private;
+			atomic_t _mapcount;
+			atomic_t _refcount;
+#ifdef CONFIG_MEMCG
+			unsigned long memcg_data;
+#endif
+	/* private: the union with struct page is transitional */
+		};
+		struct page page;
+	};
+};
+
+static_assert(sizeof(struct page) == sizeof(struct folio));
+#define FOLIO_MATCH(pg, fl)						\
+	static_assert(offsetof(struct page, pg) == offsetof(struct folio, fl))
+FOLIO_MATCH(flags, flags);
+FOLIO_MATCH(lru, lru);
+FOLIO_MATCH(mapping, mapping);
+FOLIO_MATCH(compound_head, lru);
+FOLIO_MATCH(index, index);
+FOLIO_MATCH(private, private);
+FOLIO_MATCH(_mapcount, _mapcount);
+FOLIO_MATCH(_refcount, _refcount);
+#ifdef CONFIG_MEMCG
+FOLIO_MATCH(memcg_data, memcg_data);
+#endif
+#undef FOLIO_MATCH
+
+static inline atomic_t *folio_mapcount_ptr(struct folio *folio)
+{
+	struct page *tail = &folio->page + 1;
+	return &tail->compound_mapcount;
+}
+
 static inline atomic_t *compound_mapcount_ptr(struct page *page)
 {
 	return &page[1].compound_mapcount;
@@ -246,7 +303,7 @@ static inline atomic_t *compound_mapcount_ptr(struct page *page)
 
 static inline atomic_t *compound_pincount_ptr(struct page *page)
 {
-	return &page[2].hpage_pinned_refcount;
+	return &page[1].compound_pincount;
 }
 
 /*
@@ -257,6 +314,12 @@ static inline atomic_t *compound_pincount_ptr(struct page *page)
 #define PAGE_FRAG_CACHE_MAX_SIZE	__ALIGN_MASK(32768, ~PAGE_MASK)
 #define PAGE_FRAG_CACHE_MAX_ORDER	get_order(PAGE_FRAG_CACHE_MAX_SIZE)
 
+/*
+ * page_private can be used on tail pages.  However, PagePrivate is only
+ * checked by the VM on the head page.  So page_private on the tail pages
+ * should be used for data that's ancillary to the head page (eg attaching
+ * buffer heads to tail pages after attaching buffer heads to the head page)
+ */
 #define page_private(page)		((page)->private)
 
 static inline void set_page_private(struct page *page, unsigned long private)
@@ -264,6 +327,11 @@ static inline void set_page_private(struct page *page, unsigned long private)
 	page->private = private;
 }
 
+static inline void *folio_get_private(struct folio *folio)
+{
+	return folio->private;
+}
+
 struct page_frag_cache {
 	void * va;
 #if (PAGE_SIZE < PAGE_FRAG_CACHE_MAX_SIZE)
@@ -310,6 +378,12 @@ struct vm_userfaultfd_ctx {
 struct vm_userfaultfd_ctx {};
 #endif /* CONFIG_USERFAULTFD */
 
+struct anon_vma_name {
+	struct kref kref;
+	/* The name needs to be at the end because it is dynamically sized. */
+	char name[];
+};
+
 /*
  * This struct describes a virtual memory area. There is one of these
  * per VM-area/task. A VM area is any part of the process virtual memory
@@ -350,11 +424,22 @@ struct vm_area_struct {
 	/*
 	 * For areas with an address space and backing store,
 	 * linkage into the address_space->i_mmap interval tree.
+	 *
+	 * For private anonymous mappings, a pointer to a null terminated string
+	 * containing the name given to the vma, or NULL if unnamed.
 	 */
-	struct {
-		struct rb_node rb;
-		unsigned long rb_subtree_last;
-	} shared;
+
+	union {
+		struct {
+			struct rb_node rb;
+			unsigned long rb_subtree_last;
+		} shared;
+		/*
+		 * Serialized by mmap_sem. Never use directly because it is
+		 * valid only when vm_file is NULL. Use anon_vma_name instead.
+		 */
+		struct anon_vma_name *anon_name;
+	};
 
 	/*
 	 * A file's MAP_PRIVATE vma can be in both i_mmap tree and anon_vma
@@ -387,17 +472,6 @@ struct vm_area_struct {
 	struct vm_userfaultfd_ctx vm_userfaultfd_ctx;
 } __randomize_layout;
 
-struct core_thread {
-	struct task_struct *task;
-	struct core_thread *next;
-};
-
-struct core_state {
-	atomic_t nr_threads;
-	struct core_thread dumper;
-	struct completion startup;
-};
-
 struct kioctx_table;
 struct mm_struct {
 	struct {
@@ -518,8 +592,6 @@ struct mm_struct {
 
 		unsigned long flags; /* Must use atomic bitops to access */
 
-		struct core_state *core_state; /* coredumping support */
-
 #ifdef CONFIG_AIO
 		spinlock_t			ioctx_lock;
 		struct kioctx_table __rcu	*ioctx_table;
@@ -569,15 +641,18 @@ struct mm_struct {
 		atomic_t tlb_flush_pending;
 #ifdef CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
 		/* See flush_tlb_batched_pending() */
-		bool tlb_flush_batched;
+		atomic_t tlb_flush_batched;
 #endif
 		struct uprobes_state uprobes_state;
+#ifdef CONFIG_PREEMPT_RT
+		struct rcu_head delayed_drop;
+#endif
 #ifdef CONFIG_HUGETLB_PAGE
 		atomic_long_t hugetlb_usage;
 #endif
 		struct work_struct async_put_work;
 
-#ifdef CONFIG_IOMMU_SUPPORT
+#ifdef CONFIG_IOMMU_SVA
 		u32 pasid;
 #endif
 	} __randomize_layout;
@@ -611,90 +686,6 @@ extern void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm);
 extern void tlb_gather_mmu_fullmm(struct mmu_gather *tlb, struct mm_struct *mm);
 extern void tlb_finish_mmu(struct mmu_gather *tlb);
 
-static inline void init_tlb_flush_pending(struct mm_struct *mm)
-{
-	atomic_set(&mm->tlb_flush_pending, 0);
-}
-
-static inline void inc_tlb_flush_pending(struct mm_struct *mm)
-{
-	atomic_inc(&mm->tlb_flush_pending);
-	/*
-	 * The only time this value is relevant is when there are indeed pages
-	 * to flush. And we'll only flush pages after changing them, which
-	 * requires the PTL.
-	 *
-	 * So the ordering here is:
-	 *
-	 *	atomic_inc(&mm->tlb_flush_pending);
-	 *	spin_lock(&ptl);
-	 *	...
-	 *	set_pte_at();
-	 *	spin_unlock(&ptl);
-	 *
-	 *				spin_lock(&ptl)
-	 *				mm_tlb_flush_pending();
-	 *				....
-	 *				spin_unlock(&ptl);
-	 *
-	 *	flush_tlb_range();
-	 *	atomic_dec(&mm->tlb_flush_pending);
-	 *
-	 * Where the increment if constrained by the PTL unlock, it thus
-	 * ensures that the increment is visible if the PTE modification is
-	 * visible. After all, if there is no PTE modification, nobody cares
-	 * about TLB flushes either.
-	 *
-	 * This very much relies on users (mm_tlb_flush_pending() and
-	 * mm_tlb_flush_nested()) only caring about _specific_ PTEs (and
-	 * therefore specific PTLs), because with SPLIT_PTE_PTLOCKS and RCpc
-	 * locks (PPC) the unlock of one doesn't order against the lock of
-	 * another PTL.
-	 *
-	 * The decrement is ordered by the flush_tlb_range(), such that
-	 * mm_tlb_flush_pending() will not return false unless all flushes have
-	 * completed.
-	 */
-}
-
-static inline void dec_tlb_flush_pending(struct mm_struct *mm)
-{
-	/*
-	 * See inc_tlb_flush_pending().
-	 *
-	 * This cannot be smp_mb__before_atomic() because smp_mb() simply does
-	 * not order against TLB invalidate completion, which is what we need.
-	 *
-	 * Therefore we must rely on tlb_flush_*() to guarantee order.
-	 */
-	atomic_dec(&mm->tlb_flush_pending);
-}
-
-static inline bool mm_tlb_flush_pending(struct mm_struct *mm)
-{
-	/*
-	 * Must be called after having acquired the PTL; orders against that
-	 * PTLs release and therefore ensures that if we observe the modified
-	 * PTE we must also observe the increment from inc_tlb_flush_pending().
-	 *
-	 * That is, it only guarantees to return true if there is a flush
-	 * pending for _this_ PTL.
-	 */
-	return atomic_read(&mm->tlb_flush_pending);
-}
-
-static inline bool mm_tlb_flush_nested(struct mm_struct *mm)
-{
-	/*
-	 * Similar to mm_tlb_flush_pending(), we must have acquired the PTL
-	 * for which there is a TLB flush pending in order to guarantee
-	 * we've seen both that PTE modification and the increment.
-	 *
-	 * (no requirement on actually still holding the PTL, that is irrelevant)
-	 */
-	return atomic_read(&mm->tlb_flush_pending) > 1;
-}
-
 struct vm_fault;
 
 /**
@@ -809,4 +800,49 @@ typedef struct {
 	unsigned long val;
 } swp_entry_t;
 
+/**
+ * enum fault_flag - Fault flag definitions.
+ * @FAULT_FLAG_WRITE: Fault was a write fault.
+ * @FAULT_FLAG_MKWRITE: Fault was mkwrite of existing PTE.
+ * @FAULT_FLAG_ALLOW_RETRY: Allow to retry the fault if blocked.
+ * @FAULT_FLAG_RETRY_NOWAIT: Don't drop mmap_lock and wait when retrying.
+ * @FAULT_FLAG_KILLABLE: The fault task is in SIGKILL killable region.
+ * @FAULT_FLAG_TRIED: The fault has been tried once.
+ * @FAULT_FLAG_USER: The fault originated in userspace.
+ * @FAULT_FLAG_REMOTE: The fault is not for current task/mm.
+ * @FAULT_FLAG_INSTRUCTION: The fault was during an instruction fetch.
+ * @FAULT_FLAG_INTERRUPTIBLE: The fault can be interrupted by non-fatal signals.
+ *
+ * About @FAULT_FLAG_ALLOW_RETRY and @FAULT_FLAG_TRIED: we can specify
+ * whether we would allow page faults to retry by specifying these two
+ * fault flags correctly.  Currently there can be three legal combinations:
+ *
+ * (a) ALLOW_RETRY and !TRIED:  this means the page fault allows retry, and
+ *                              this is the first try
+ *
+ * (b) ALLOW_RETRY and TRIED:   this means the page fault allows retry, and
+ *                              we've already tried at least once
+ *
+ * (c) !ALLOW_RETRY and !TRIED: this means the page fault does not allow retry
+ *
+ * The unlisted combination (!ALLOW_RETRY && TRIED) is illegal and should never
+ * be used.  Note that page faults can be allowed to retry for multiple times,
+ * in which case we'll have an initial fault with flags (a) then later on
+ * continuous faults with flags (b).  We should always try to detect pending
+ * signals before a retry to make sure the continuous page faults can still be
+ * interrupted if necessary.
+ */
+enum fault_flag {
+	FAULT_FLAG_WRITE =		1 << 0,
+	FAULT_FLAG_MKWRITE =		1 << 1,
+	FAULT_FLAG_ALLOW_RETRY =	1 << 2,
+	FAULT_FLAG_RETRY_NOWAIT = 	1 << 3,
+	FAULT_FLAG_KILLABLE =		1 << 4,
+	FAULT_FLAG_TRIED = 		1 << 5,
+	FAULT_FLAG_USER =		1 << 6,
+	FAULT_FLAG_REMOTE =		1 << 7,
+	FAULT_FLAG_INSTRUCTION =	1 << 8,
+	FAULT_FLAG_INTERRUPTIBLE =	1 << 9,
+};
+
 #endif /* _LINUX_MM_TYPES_H */
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 71101d1ec825..de5c64bbdb72 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -175,7 +175,7 @@ void mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq);
 int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd,
 		int retries);
 
-int mmc_hw_reset(struct mmc_host *host);
+int mmc_hw_reset(struct mmc_card *card);
 int mmc_sw_reset(struct mmc_host *host);
 void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card);
 
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 0c0c9a0fdf57..7afb57cab00b 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -15,7 +15,7 @@
 #include <linux/mmc/card.h>
 #include <linux/mmc/pm.h>
 #include <linux/dma-direction.h>
-#include <linux/keyslot-manager.h>
+#include <linux/blk-crypto-profile.h>
 
 struct mmc_ios {
 	unsigned int	clock;			/* clock rate */
@@ -162,6 +162,9 @@ struct mmc_host_ops {
 	/* Prepare HS400 target operating frequency depending host driver */
 	int	(*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios);
 
+	/* Execute HS400 tuning depending host driver */
+	int	(*execute_hs400_tuning)(struct mmc_host *host, struct mmc_card *card);
+
 	/* Prepare switch to DDR during the HS400 init sequence */
 	int	(*hs400_prepare_ddr)(struct mmc_host *host);
 
@@ -492,7 +495,7 @@ struct mmc_host {
 
 	/* Inline encryption support */
 #ifdef CONFIG_MMC_CRYPTO
-	struct blk_keyslot_manager ksm;
+	struct blk_crypto_profile crypto_profile;
 #endif
 
 	/* Host Software Queue support */
@@ -634,5 +637,6 @@ static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
 
 int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error);
 int mmc_send_abort_tuning(struct mmc_host *host, u32 opcode);
+int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd);
 
 #endif /* LINUX_MMC_HOST_H */
diff --git a/include/linux/mmc/sdhci-pci-data.h b/include/linux/mmc/sdhci-pci-data.h
deleted file mode 100644
index 1d42872d22f3..000000000000
--- a/include/linux/mmc/sdhci-pci-data.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef LINUX_MMC_SDHCI_PCI_DATA_H
-#define LINUX_MMC_SDHCI_PCI_DATA_H
-
-struct pci_dev;
-
-struct sdhci_pci_data {
-	struct pci_dev	*pdev;
-	int		slotno;
-	int		rst_n_gpio; /* Set to -EINVAL if unused */
-	int		cd_gpio;    /* Set to -EINVAL if unused */
-	int		(*setup)(struct sdhci_pci_data *data);
-	void		(*cleanup)(struct sdhci_pci_data *data);
-};
-
-extern struct sdhci_pci_data *(*sdhci_pci_get_data)(struct pci_dev *pdev,
-				int slotno);
-#endif
diff --git a/include/linux/mmc/sdio_ids.h b/include/linux/mmc/sdio_ids.h
index a85c9f0bd470..53f0efa0bccf 100644
--- a/include/linux/mmc/sdio_ids.h
+++ b/include/linux/mmc/sdio_ids.h
@@ -105,6 +105,7 @@
 #define SDIO_VENDOR_ID_MEDIATEK			0x037a
 #define SDIO_DEVICE_ID_MEDIATEK_MT7663		0x7663
 #define SDIO_DEVICE_ID_MEDIATEK_MT7668		0x7668
+#define SDIO_DEVICE_ID_MEDIATEK_MT7961		0x7961
 
 #define SDIO_VENDOR_ID_MICROCHIP_WILC		0x0296
 #define SDIO_DEVICE_ID_MICROCHIP_WILC1000	0x5347
diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h
index 1935d4c72d10..d7285f8148a3 100644
--- a/include/linux/mmdebug.h
+++ b/include/linux/mmdebug.h
@@ -22,6 +22,13 @@ void dump_mm(const struct mm_struct *mm);
 			BUG();						\
 		}							\
 	} while (0)
+#define VM_BUG_ON_FOLIO(cond, folio)					\
+	do {								\
+		if (unlikely(cond)) {					\
+			dump_page(&folio->page, "VM_BUG_ON_FOLIO(" __stringify(cond)")");\
+			BUG();						\
+		}							\
+	} while (0)
 #define VM_BUG_ON_VMA(cond, vma)					\
 	do {								\
 		if (unlikely(cond)) {					\
@@ -47,6 +54,17 @@ void dump_mm(const struct mm_struct *mm);
 	}								\
 	unlikely(__ret_warn_once);					\
 })
+#define VM_WARN_ON_ONCE_FOLIO(cond, folio)	({			\
+	static bool __section(".data.once") __warned;			\
+	int __ret_warn_once = !!(cond);					\
+									\
+	if (unlikely(__ret_warn_once && !__warned)) {			\
+		dump_page(&folio->page, "VM_WARN_ON_ONCE_FOLIO(" __stringify(cond)")");\
+		__warned = true;					\
+		WARN_ON(1);						\
+	}								\
+	unlikely(__ret_warn_once);					\
+})
 
 #define VM_WARN_ON(cond) (void)WARN_ON(cond)
 #define VM_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond)
@@ -55,11 +73,13 @@ void dump_mm(const struct mm_struct *mm);
 #else
 #define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
 #define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
+#define VM_BUG_ON_FOLIO(cond, folio) VM_BUG_ON(cond)
 #define VM_BUG_ON_VMA(cond, vma) VM_BUG_ON(cond)
 #define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond)
 #define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond)
 #define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond)
 #define VM_WARN_ON_ONCE_PAGE(cond, page)  BUILD_BUG_ON_INVALID(cond)
+#define VM_WARN_ON_ONCE_FOLIO(cond, folio)  BUILD_BUG_ON_INVALID(cond)
 #define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
 #define VM_WARN(cond, format...) BUILD_BUG_ON_INVALID(cond)
 #endif
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 6a1d79d84675..46ffab808f03 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -83,6 +83,17 @@ static inline bool is_migrate_movable(int mt)
 	return is_migrate_cma(mt) || mt == MIGRATE_MOVABLE;
 }
 
+/*
+ * Check whether a migratetype can be merged with another migratetype.
+ *
+ * It is only mergeable when it can fall back to other migratetypes for
+ * allocation. See fallbacks[MIGRATE_TYPES][3] in page_alloc.c.
+ */
+static inline bool migratetype_is_mergeable(int mt)
+{
+	return mt < MIGRATE_PCPTYPES;
+}
+
 #define for_each_migratetype_order(order, type) \
 	for (order = 0; order < MAX_ORDER; order++) \
 		for (type = 0; type < MIGRATE_TYPES; type++)
@@ -199,6 +210,7 @@ enum node_stat_item {
 	NR_VMSCAN_IMMEDIATE,	/* Prioritise for reclaim when writeback ends */
 	NR_DIRTIED,		/* page dirtyings since bootup */
 	NR_WRITTEN,		/* page writings since bootup */
+	NR_THROTTLED_WRITTEN,	/* NR_WRITTEN while reclaim throttled */
 	NR_KERNEL_MISC_RECLAIMABLE,	/* reclaimable non-slab kernel pages */
 	NR_FOLL_PIN_ACQUIRED,	/* via: pin_user_page(), gup flag: FOLL_PIN */
 	NR_FOLL_PIN_RELEASED,	/* pages returned via unpin_user_page() */
@@ -210,6 +222,9 @@ enum node_stat_item {
 #ifdef CONFIG_SWAP
 	NR_SWAPCACHE,
 #endif
+#ifdef CONFIG_NUMA_BALANCING
+	PGPROMOTE_SUCCESS,	/* promote successfully */
+#endif
 	NR_VM_NODE_STAT_ITEMS
 };
 
@@ -272,6 +287,14 @@ enum lru_list {
 	NR_LRU_LISTS
 };
 
+enum vmscan_throttle_state {
+	VMSCAN_THROTTLE_WRITEBACK,
+	VMSCAN_THROTTLE_ISOLATED,
+	VMSCAN_THROTTLE_NOPROGRESS,
+	VMSCAN_THROTTLE_CONGESTED,
+	NR_VMSCAN_THROTTLE,
+};
+
 #define for_each_lru(lru) for (lru = 0; lru < NR_LRU_LISTS; lru++)
 
 #define for_each_evictable_lru(lru) for (lru = 0; lru <= LRU_ACTIVE_FILE; lru++)
@@ -330,6 +353,7 @@ enum zone_watermarks {
 	WMARK_MIN,
 	WMARK_LOW,
 	WMARK_HIGH,
+	WMARK_PROMO,
 	NR_WMARK
 };
 
@@ -841,6 +865,13 @@ typedef struct pglist_data {
 	int node_id;
 	wait_queue_head_t kswapd_wait;
 	wait_queue_head_t pfmemalloc_wait;
+
+	/* workqueues for throttling reclaim for different reasons. */
+	wait_queue_head_t reclaim_wait[NR_VMSCAN_THROTTLE];
+
+	atomic_t nr_writeback_throttled;/* nr of writeback-throttled tasks */
+	unsigned long nr_reclaim_start;	/* nr pages written while throttled
+					 * when throttling started. */
 	struct task_struct *kswapd;	/* Protected by
 					   mem_hotplug_begin/end() */
 	int kswapd_order;
@@ -904,12 +935,6 @@ typedef struct pglist_data {
 
 #define node_present_pages(nid)	(NODE_DATA(nid)->node_present_pages)
 #define node_spanned_pages(nid)	(NODE_DATA(nid)->node_spanned_pages)
-#ifdef CONFIG_FLATMEM
-#define pgdat_page_nr(pgdat, pagenr)	((pgdat)->node_mem_map + (pagenr))
-#else
-#define pgdat_page_nr(pgdat, pagenr)	pfn_to_page((pgdat)->node_start_pfn + (pagenr))
-#endif
-#define nid_page_nr(nid, pagenr) 	pgdat_page_nr(NODE_DATA(nid),(pagenr))
 
 #define node_start_pfn(nid)	(NODE_DATA(nid)->node_start_pfn)
 #define node_end_pfn(nid) pgdat_end_pfn(NODE_DATA(nid))
@@ -1031,6 +1056,15 @@ static inline int is_highmem_idx(enum zone_type idx)
 #endif
 }
 
+#ifdef CONFIG_ZONE_DMA
+bool has_managed_dma(void);
+#else
+static inline bool has_managed_dma(void)
+{
+	return false;
+}
+#endif
+
 /**
  * is_highmem - helper function to quickly check if a struct zone is a
  *              highmem zone or not.  This is an attempt to keep references
@@ -1076,7 +1110,6 @@ static inline struct pglist_data *NODE_DATA(int nid)
 {
 	return &contig_page_data;
 }
-#define NODE_MEM_MAP(nid)	mem_map
 
 #else /* CONFIG_NUMA */
 
@@ -1220,6 +1253,28 @@ static inline struct zoneref *first_zones_zonelist(struct zonelist *zonelist,
 #define for_each_zone_zonelist(zone, z, zlist, highidx) \
 	for_each_zone_zonelist_nodemask(zone, z, zlist, highidx, NULL)
 
+/* Whether the 'nodes' are all movable nodes */
+static inline bool movable_only_nodes(nodemask_t *nodes)
+{
+	struct zonelist *zonelist;
+	struct zoneref *z;
+	int nid;
+
+	if (nodes_empty(*nodes))
+		return false;
+
+	/*
+	 * We can chose arbitrary node from the nodemask to get a
+	 * zonelist as they are interlinked. We just need to find
+	 * at least one zone that can satisfy kernel allocations.
+	 */
+	nid = first_node(*nodes);
+	zonelist = &NODE_DATA(nid)->node_zonelists[ZONELIST_FALLBACK];
+	z = first_zones_zonelist(zonelist, ZONE_NORMAL,	nodes);
+	return (!z->zone) ? true : false;
+}
+
+
 #ifdef CONFIG_SPARSEMEM
 #include <asm/sparsemem.h>
 #endif
@@ -1342,13 +1397,16 @@ static inline unsigned long *section_to_usemap(struct mem_section *ms)
 
 static inline struct mem_section *__nr_to_section(unsigned long nr)
 {
+	unsigned long root = SECTION_NR_TO_ROOT(nr);
+
+	if (unlikely(root >= NR_SECTION_ROOTS))
+		return NULL;
+
 #ifdef CONFIG_SPARSEMEM_EXTREME
-	if (!mem_section)
+	if (!mem_section || !mem_section[root])
 		return NULL;
 #endif
-	if (!mem_section[SECTION_NR_TO_ROOT(nr)])
-		return NULL;
-	return &mem_section[SECTION_NR_TO_ROOT(nr)][nr & SECTION_ROOT_MASK];
+	return &mem_section[root][nr & SECTION_ROOT_MASK];
 }
 extern size_t mem_section_usage_size(void);
 
@@ -1481,7 +1539,7 @@ static inline int pfn_valid(unsigned long pfn)
 
 	if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
 		return 0;
-	ms = __nr_to_section(pfn_to_section_nr(pfn));
+	ms = __pfn_to_section(pfn);
 	if (!valid_section(ms))
 		return 0;
 	/*
@@ -1496,7 +1554,7 @@ static inline int pfn_in_present_section(unsigned long pfn)
 {
 	if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)
 		return 0;
-	return present_section(__nr_to_section(pfn_to_section_nr(pfn)));
+	return present_section(__pfn_to_section(pfn));
 }
 
 static inline unsigned long next_present_section_nr(unsigned long section_nr)
diff --git a/include/linux/mnt_idmapping.h b/include/linux/mnt_idmapping.h
new file mode 100644
index 000000000000..ee5a217de2a8
--- /dev/null
+++ b/include/linux/mnt_idmapping.h
@@ -0,0 +1,234 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_MNT_IDMAPPING_H
+#define _LINUX_MNT_IDMAPPING_H
+
+#include <linux/types.h>
+#include <linux/uidgid.h>
+
+struct user_namespace;
+/*
+ * Carries the initial idmapping of 0:0:4294967295 which is an identity
+ * mapping. This means that {g,u}id 0 is mapped to {g,u}id 0, {g,u}id 1 is
+ * mapped to {g,u}id 1, [...], {g,u}id 1000 to {g,u}id 1000, [...].
+ */
+extern struct user_namespace init_user_ns;
+
+/**
+ * initial_idmapping - check whether this is the initial mapping
+ * @ns: idmapping to check
+ *
+ * Check whether this is the initial mapping, mapping 0 to 0, 1 to 1,
+ * [...], 1000 to 1000 [...].
+ *
+ * Return: true if this is the initial mapping, false if not.
+ */
+static inline bool initial_idmapping(const struct user_namespace *ns)
+{
+	return ns == &init_user_ns;
+}
+
+/**
+ * no_idmapping - check whether we can skip remapping a kuid/gid
+ * @mnt_userns: the mount's idmapping
+ * @fs_userns: the filesystem's idmapping
+ *
+ * This function can be used to check whether a remapping between two
+ * idmappings is required.
+ * An idmapped mount is a mount that has an idmapping attached to it that
+ * is different from the filsystem's idmapping and the initial idmapping.
+ * If the initial mapping is used or the idmapping of the mount and the
+ * filesystem are identical no remapping is required.
+ *
+ * Return: true if remapping can be skipped, false if not.
+ */
+static inline bool no_idmapping(const struct user_namespace *mnt_userns,
+				const struct user_namespace *fs_userns)
+{
+	return initial_idmapping(mnt_userns) || mnt_userns == fs_userns;
+}
+
+/**
+ * mapped_kuid_fs - map a filesystem kuid into a mnt_userns
+ * @mnt_userns: the mount's idmapping
+ * @fs_userns: the filesystem's idmapping
+ * @kuid : kuid to be mapped
+ *
+ * Take a @kuid and remap it from @fs_userns into @mnt_userns. Use this
+ * function when preparing a @kuid to be reported to userspace.
+ *
+ * If no_idmapping() determines that this is not an idmapped mount we can
+ * simply return @kuid unchanged.
+ * If initial_idmapping() tells us that the filesystem is not mounted with an
+ * idmapping we know the value of @kuid won't change when calling
+ * from_kuid() so we can simply retrieve the value via __kuid_val()
+ * directly.
+ *
+ * Return: @kuid mapped according to @mnt_userns.
+ * If @kuid has no mapping in either @mnt_userns or @fs_userns INVALID_UID is
+ * returned.
+ */
+static inline kuid_t mapped_kuid_fs(struct user_namespace *mnt_userns,
+				    struct user_namespace *fs_userns,
+				    kuid_t kuid)
+{
+	uid_t uid;
+
+	if (no_idmapping(mnt_userns, fs_userns))
+		return kuid;
+	if (initial_idmapping(fs_userns))
+		uid = __kuid_val(kuid);
+	else
+		uid = from_kuid(fs_userns, kuid);
+	if (uid == (uid_t)-1)
+		return INVALID_UID;
+	return make_kuid(mnt_userns, uid);
+}
+
+/**
+ * mapped_kgid_fs - map a filesystem kgid into a mnt_userns
+ * @mnt_userns: the mount's idmapping
+ * @fs_userns: the filesystem's idmapping
+ * @kgid : kgid to be mapped
+ *
+ * Take a @kgid and remap it from @fs_userns into @mnt_userns. Use this
+ * function when preparing a @kgid to be reported to userspace.
+ *
+ * If no_idmapping() determines that this is not an idmapped mount we can
+ * simply return @kgid unchanged.
+ * If initial_idmapping() tells us that the filesystem is not mounted with an
+ * idmapping we know the value of @kgid won't change when calling
+ * from_kgid() so we can simply retrieve the value via __kgid_val()
+ * directly.
+ *
+ * Return: @kgid mapped according to @mnt_userns.
+ * If @kgid has no mapping in either @mnt_userns or @fs_userns INVALID_GID is
+ * returned.
+ */
+static inline kgid_t mapped_kgid_fs(struct user_namespace *mnt_userns,
+				    struct user_namespace *fs_userns,
+				    kgid_t kgid)
+{
+	gid_t gid;
+
+	if (no_idmapping(mnt_userns, fs_userns))
+		return kgid;
+	if (initial_idmapping(fs_userns))
+		gid = __kgid_val(kgid);
+	else
+		gid = from_kgid(fs_userns, kgid);
+	if (gid == (gid_t)-1)
+		return INVALID_GID;
+	return make_kgid(mnt_userns, gid);
+}
+
+/**
+ * mapped_kuid_user - map a user kuid into a mnt_userns
+ * @mnt_userns: the mount's idmapping
+ * @fs_userns: the filesystem's idmapping
+ * @kuid : kuid to be mapped
+ *
+ * Use the idmapping of @mnt_userns to remap a @kuid into @fs_userns. Use this
+ * function when preparing a @kuid to be written to disk or inode.
+ *
+ * If no_idmapping() determines that this is not an idmapped mount we can
+ * simply return @kuid unchanged.
+ * If initial_idmapping() tells us that the filesystem is not mounted with an
+ * idmapping we know the value of @kuid won't change when calling
+ * make_kuid() so we can simply retrieve the value via KUIDT_INIT()
+ * directly.
+ *
+ * Return: @kuid mapped according to @mnt_userns.
+ * If @kuid has no mapping in either @mnt_userns or @fs_userns INVALID_UID is
+ * returned.
+ */
+static inline kuid_t mapped_kuid_user(struct user_namespace *mnt_userns,
+				      struct user_namespace *fs_userns,
+				      kuid_t kuid)
+{
+	uid_t uid;
+
+	if (no_idmapping(mnt_userns, fs_userns))
+		return kuid;
+	uid = from_kuid(mnt_userns, kuid);
+	if (uid == (uid_t)-1)
+		return INVALID_UID;
+	if (initial_idmapping(fs_userns))
+		return KUIDT_INIT(uid);
+	return make_kuid(fs_userns, uid);
+}
+
+/**
+ * mapped_kgid_user - map a user kgid into a mnt_userns
+ * @mnt_userns: the mount's idmapping
+ * @fs_userns: the filesystem's idmapping
+ * @kgid : kgid to be mapped
+ *
+ * Use the idmapping of @mnt_userns to remap a @kgid into @fs_userns. Use this
+ * function when preparing a @kgid to be written to disk or inode.
+ *
+ * If no_idmapping() determines that this is not an idmapped mount we can
+ * simply return @kgid unchanged.
+ * If initial_idmapping() tells us that the filesystem is not mounted with an
+ * idmapping we know the value of @kgid won't change when calling
+ * make_kgid() so we can simply retrieve the value via KGIDT_INIT()
+ * directly.
+ *
+ * Return: @kgid mapped according to @mnt_userns.
+ * If @kgid has no mapping in either @mnt_userns or @fs_userns INVALID_GID is
+ * returned.
+ */
+static inline kgid_t mapped_kgid_user(struct user_namespace *mnt_userns,
+				      struct user_namespace *fs_userns,
+				      kgid_t kgid)
+{
+	gid_t gid;
+
+	if (no_idmapping(mnt_userns, fs_userns))
+		return kgid;
+	gid = from_kgid(mnt_userns, kgid);
+	if (gid == (gid_t)-1)
+		return INVALID_GID;
+	if (initial_idmapping(fs_userns))
+		return KGIDT_INIT(gid);
+	return make_kgid(fs_userns, gid);
+}
+
+/**
+ * mapped_fsuid - return caller's fsuid mapped up into a mnt_userns
+ * @mnt_userns: the mount's idmapping
+ * @fs_userns: the filesystem's idmapping
+ *
+ * Use this helper to initialize a new vfs or filesystem object based on
+ * the caller's fsuid. A common example is initializing the i_uid field of
+ * a newly allocated inode triggered by a creation event such as mkdir or
+ * O_CREAT. Other examples include the allocation of quotas for a specific
+ * user.
+ *
+ * Return: the caller's current fsuid mapped up according to @mnt_userns.
+ */
+static inline kuid_t mapped_fsuid(struct user_namespace *mnt_userns,
+				  struct user_namespace *fs_userns)
+{
+	return mapped_kuid_user(mnt_userns, fs_userns, current_fsuid());
+}
+
+/**
+ * mapped_fsgid - return caller's fsgid mapped up into a mnt_userns
+ * @mnt_userns: the mount's idmapping
+ * @fs_userns: the filesystem's idmapping
+ *
+ * Use this helper to initialize a new vfs or filesystem object based on
+ * the caller's fsgid. A common example is initializing the i_gid field of
+ * a newly allocated inode triggered by a creation event such as mkdir or
+ * O_CREAT. Other examples include the allocation of quotas for a specific
+ * user.
+ *
+ * Return: the caller's current fsgid mapped up according to @mnt_userns.
+ */
+static inline kgid_t mapped_fsgid(struct user_namespace *mnt_userns,
+				  struct user_namespace *fs_userns)
+{
+	return mapped_kgid_user(mnt_userns, fs_userns, current_fsgid());
+}
+
+#endif /* _LINUX_MNT_IDMAPPING_H */
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index ae2e75d15b21..5da5d990ff58 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -211,7 +211,7 @@ struct css_device_id {
 	kernel_ulong_t driver_data;
 };
 
-#define ACPI_ID_LEN	9
+#define ACPI_ID_LEN	16
 
 struct acpi_device_id {
 	__u8 id[ACPI_ID_LEN];
@@ -895,4 +895,18 @@ struct dfl_device_id {
 	kernel_ulong_t driver_data;
 };
 
+/* ISHTP (Integrated Sensor Hub Transport Protocol) */
+
+#define ISHTP_MODULE_PREFIX	"ishtp:"
+
+/**
+ * struct ishtp_device_id - ISHTP device identifier
+ * @guid: GUID of the device.
+ * @driver_data: pointer to driver specific data
+ */
+struct ishtp_device_id {
+	guid_t guid;
+	kernel_ulong_t driver_data;
+};
+
 #endif /* LINUX_MOD_DEVICETABLE_H */
diff --git a/include/linux/module.h b/include/linux/module.h
index c9f1200b2312..1e135fd5c076 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -290,7 +290,8 @@ extern typeof(name) __mod_##type##__##name##_device_table		\
  * files require multiple MODULE_FIRMWARE() specifiers */
 #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
 
-#define MODULE_IMPORT_NS(ns) MODULE_INFO(import_ns, #ns)
+#define _MODULE_IMPORT_NS(ns)	MODULE_INFO(import_ns, #ns)
+#define MODULE_IMPORT_NS(ns)	_MODULE_IMPORT_NS(ns)
 
 struct notifier_block;
 
@@ -595,9 +596,9 @@ int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
 /* Look for this name: can be of form module:name. */
 unsigned long module_kallsyms_lookup_name(const char *name);
 
-extern void __noreturn __module_put_and_exit(struct module *mod,
+extern void __noreturn __module_put_and_kthread_exit(struct module *mod,
 			long code);
-#define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code)
+#define module_put_and_kthread_exit(code) __module_put_and_kthread_exit(THIS_MODULE, code)
 
 #ifdef CONFIG_MODULE_UNLOAD
 int module_refcount(struct module *mod);
@@ -790,7 +791,7 @@ static inline int unregister_module_notifier(struct notifier_block *nb)
 	return 0;
 }
 
-#define module_put_and_exit(code) do_exit(code)
+#define module_put_and_kthread_exit(code) kthread_exit(code)
 
 static inline void print_modules(void)
 {
diff --git a/include/linux/mount.h b/include/linux/mount.h
index 5d92a7e1a742..7f18a7555dff 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -113,9 +113,6 @@ extern void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list);
 extern void mark_mounts_for_expiry(struct list_head *mounts);
 
 extern dev_t name_to_dev_t(const char *name);
-
-extern unsigned int sysctl_mount_max;
-
 extern bool path_is_mountpoint(const struct path *path);
 
 extern void kern_unmount_array(struct vfsmount *mnt[], unsigned int num);
diff --git a/include/linux/mroute_base.h b/include/linux/mroute_base.h
index 8071148f29a6..e05ee9f001ff 100644
--- a/include/linux/mroute_base.h
+++ b/include/linux/mroute_base.h
@@ -12,6 +12,7 @@
 /**
  * struct vif_device - interface representor for multicast routing
  * @dev: network device being used
+ * @dev_tracker: refcount tracker for @dev reference
  * @bytes_in: statistic; bytes ingressing
  * @bytes_out: statistic; bytes egresing
  * @pkt_in: statistic; packets ingressing
@@ -26,6 +27,7 @@
  */
 struct vif_device {
 	struct net_device *dev;
+	netdevice_tracker dev_tracker;
 	unsigned long bytes_in, bytes_out;
 	unsigned long pkt_in, pkt_out;
 	unsigned long rate_limit;
diff --git a/include/linux/msi.h b/include/linux/msi.h
index 49cf6eb222e7..fc918a658d48 100644
--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -2,7 +2,23 @@
 #ifndef LINUX_MSI_H
 #define LINUX_MSI_H
 
-#include <linux/kobject.h>
+/*
+ * This header file contains MSI data structures and functions which are
+ * only relevant for:
+ *	- Interrupt core code
+ *	- PCI/MSI core code
+ *	- MSI interrupt domain implementations
+ *	- IOMMU, low level VFIO, NTB and other justified exceptions
+ *	  dealing with low level MSI details.
+ *
+ * Regular device drivers have no business with any of these functions and
+ * especially storing MSI descriptor pointers in random code is considered
+ * abuse. The only function which is relevant for drivers is msi_get_virq().
+ */
+
+#include <linux/cpumask.h>
+#include <linux/xarray.h>
+#include <linux/mutex.h>
 #include <linux/list.h>
 #include <asm/msi.h>
 
@@ -56,6 +72,8 @@ struct irq_data;
 struct msi_desc;
 struct pci_dev;
 struct platform_msi_priv_data;
+struct device_attribute;
+
 void __get_cached_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
 #ifdef CONFIG_GENERIC_MSI_IRQ
 void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg);
@@ -69,62 +87,59 @@ typedef void (*irq_write_msi_msg_t)(struct msi_desc *desc,
 				    struct msi_msg *msg);
 
 /**
- * platform_msi_desc - Platform device specific msi descriptor data
- * @msi_priv_data:	Pointer to platform private data
- * @msi_index:		The index of the MSI descriptor for multi MSI
- */
-struct platform_msi_desc {
-	struct platform_msi_priv_data	*msi_priv_data;
-	u16				msi_index;
-};
-
-/**
- * fsl_mc_msi_desc - FSL-MC device specific msi descriptor data
- * @msi_index:		The index of the MSI descriptor
+ * pci_msi_desc - PCI/MSI specific MSI descriptor data
+ *
+ * @msi_mask:	[PCI MSI]   MSI cached mask bits
+ * @msix_ctrl:	[PCI MSI-X] MSI-X cached per vector control bits
+ * @is_msix:	[PCI MSI/X] True if MSI-X
+ * @multiple:	[PCI MSI/X] log2 num of messages allocated
+ * @multi_cap:	[PCI MSI/X] log2 num of messages supported
+ * @can_mask:	[PCI MSI/X] Masking supported?
+ * @is_64:	[PCI MSI/X] Address size: 0=32bit 1=64bit
+ * @default_irq:[PCI MSI/X] The default pre-assigned non-MSI irq
+ * @mask_pos:	[PCI MSI]   Mask register position
+ * @mask_base:	[PCI MSI-X] Mask register base address
  */
-struct fsl_mc_msi_desc {
-	u16				msi_index;
+struct pci_msi_desc {
+	union {
+		u32 msi_mask;
+		u32 msix_ctrl;
+	};
+	struct {
+		u8	is_msix		: 1;
+		u8	multiple	: 3;
+		u8	multi_cap	: 3;
+		u8	can_mask	: 1;
+		u8	is_64		: 1;
+		u8	is_virtual	: 1;
+		unsigned default_irq;
+	} msi_attrib;
+	union {
+		u8	mask_pos;
+		void __iomem *mask_base;
+	};
 };
 
-/**
- * ti_sci_inta_msi_desc - TISCI based INTA specific msi descriptor data
- * @dev_index: TISCI device index
- */
-struct ti_sci_inta_msi_desc {
-	u16	dev_index;
-};
+#define MSI_MAX_INDEX		((unsigned int)USHRT_MAX)
 
 /**
  * struct msi_desc - Descriptor structure for MSI based interrupts
- * @list:	List head for management
  * @irq:	The base interrupt number
  * @nvec_used:	The number of vectors used
  * @dev:	Pointer to the device which uses this descriptor
  * @msg:	The last set MSI message cached for reuse
  * @affinity:	Optional pointer to a cpu affinity mask for this descriptor
+ * @sysfs_attr:	Pointer to sysfs device attribute
  *
  * @write_msi_msg:	Callback that may be called when the MSI message
  *			address or data changes
  * @write_msi_msg_data:	Data parameter for the callback.
  *
- * @msi_mask:	[PCI MSI]   MSI cached mask bits
- * @msix_ctrl:	[PCI MSI-X] MSI-X cached per vector control bits
- * @is_msix:	[PCI MSI/X] True if MSI-X
- * @multiple:	[PCI MSI/X] log2 num of messages allocated
- * @multi_cap:	[PCI MSI/X] log2 num of messages supported
- * @maskbit:	[PCI MSI/X] Mask-Pending bit supported?
- * @is_64:	[PCI MSI/X] Address size: 0=32bit 1=64bit
- * @entry_nr:	[PCI MSI/X] Entry which is described by this descriptor
- * @default_irq:[PCI MSI/X] The default pre-assigned non-MSI irq
- * @mask_pos:	[PCI MSI]   Mask register position
- * @mask_base:	[PCI MSI-X] Mask register base address
- * @platform:	[platform]  Platform device specific msi descriptor data
- * @fsl_mc:	[fsl-mc]    FSL MC device specific msi descriptor data
- * @inta:	[INTA]	    TISCI based INTA specific msi descriptor data
+ * @msi_index:	Index of the msi descriptor
+ * @pci:	PCI specific msi descriptor data
  */
 struct msi_desc {
 	/* Shared device/bus type independent data */
-	struct list_head		list;
 	unsigned int			irq;
 	unsigned int			nvec_used;
 	struct device			*dev;
@@ -133,61 +148,71 @@ struct msi_desc {
 #ifdef CONFIG_IRQ_MSI_IOMMU
 	const void			*iommu_cookie;
 #endif
+#ifdef CONFIG_SYSFS
+	struct device_attribute		*sysfs_attrs;
+#endif
 
 	void (*write_msi_msg)(struct msi_desc *entry, void *data);
 	void *write_msi_msg_data;
 
-	union {
-		/* PCI MSI/X specific data */
-		struct {
-			union {
-				u32 msi_mask;
-				u32 msix_ctrl;
-			};
-			struct {
-				u8	is_msix		: 1;
-				u8	multiple	: 3;
-				u8	multi_cap	: 3;
-				u8	maskbit		: 1;
-				u8	is_64		: 1;
-				u8	is_virtual	: 1;
-				u16	entry_nr;
-				unsigned default_irq;
-			} msi_attrib;
-			union {
-				u8	mask_pos;
-				void __iomem *mask_base;
-			};
-		};
-
-		/*
-		 * Non PCI variants add their data structure here. New
-		 * entries need to use a named structure. We want
-		 * proper name spaces for this. The PCI part is
-		 * anonymous for now as it would require an immediate
-		 * tree wide cleanup.
-		 */
-		struct platform_msi_desc platform;
-		struct fsl_mc_msi_desc fsl_mc;
-		struct ti_sci_inta_msi_desc inta;
-	};
+	u16				msi_index;
+	struct pci_msi_desc		pci;
+};
+
+/*
+ * Filter values for the MSI descriptor iterators and accessor functions.
+ */
+enum msi_desc_filter {
+	/* All descriptors */
+	MSI_DESC_ALL,
+	/* Descriptors which have no interrupt associated */
+	MSI_DESC_NOTASSOCIATED,
+	/* Descriptors which have an interrupt associated */
+	MSI_DESC_ASSOCIATED,
 };
 
-/* Helpers to hide struct msi_desc implementation details */
+/**
+ * msi_device_data - MSI per device data
+ * @properties:		MSI properties which are interesting to drivers
+ * @platform_data:	Platform-MSI specific data
+ * @mutex:		Mutex protecting the MSI descriptor store
+ * @__store:		Xarray for storing MSI descriptor pointers
+ * @__iter_idx:		Index to search the next entry for iterators
+ */
+struct msi_device_data {
+	unsigned long			properties;
+	struct platform_msi_priv_data	*platform_data;
+	struct mutex			mutex;
+	struct xarray			__store;
+	unsigned long			__iter_idx;
+};
+
+int msi_setup_device_data(struct device *dev);
+
+unsigned int msi_get_virq(struct device *dev, unsigned int index);
+void msi_lock_descs(struct device *dev);
+void msi_unlock_descs(struct device *dev);
+
+struct msi_desc *msi_first_desc(struct device *dev, enum msi_desc_filter filter);
+struct msi_desc *msi_next_desc(struct device *dev, enum msi_desc_filter filter);
+
+/**
+ * msi_for_each_desc - Iterate the MSI descriptors
+ *
+ * @desc:	struct msi_desc pointer used as iterator
+ * @dev:	struct device pointer - device to iterate
+ * @filter:	Filter for descriptor selection
+ *
+ * Notes:
+ *  - The loop must be protected with a msi_lock_descs()/msi_unlock_descs()
+ *    pair.
+ *  - It is safe to remove a retrieved MSI descriptor in the loop.
+ */
+#define msi_for_each_desc(desc, dev, filter)			\
+	for ((desc) = msi_first_desc((dev), (filter)); (desc);	\
+	     (desc) = msi_next_desc((dev), (filter)))
+
 #define msi_desc_to_dev(desc)		((desc)->dev)
-#define dev_to_msi_list(dev)		(&(dev)->msi_list)
-#define first_msi_entry(dev)		\
-	list_first_entry(dev_to_msi_list((dev)), struct msi_desc, list)
-#define for_each_msi_entry(desc, dev)	\
-	list_for_each_entry((desc), dev_to_msi_list((dev)), list)
-#define for_each_msi_entry_safe(desc, tmp, dev)	\
-	list_for_each_entry_safe((desc), (tmp), dev_to_msi_list((dev)), list)
-#define for_each_msi_vector(desc, __irq, dev)				\
-	for_each_msi_entry((desc), (dev))				\
-		if ((desc)->irq)					\
-			for (__irq = (desc)->irq;			\
-			     __irq < ((desc)->irq + (desc)->nvec_used);	\
-			     __irq++)
 
 #ifdef CONFIG_IRQ_MSI_IOMMU
 static inline const void *msi_desc_get_iommu_cookie(struct msi_desc *desc)
@@ -213,36 +238,33 @@ static inline void msi_desc_set_iommu_cookie(struct msi_desc *desc,
 #endif
 
 #ifdef CONFIG_PCI_MSI
-#define first_pci_msi_entry(pdev)	first_msi_entry(&(pdev)->dev)
-#define for_each_pci_msi_entry(desc, pdev)	\
-	for_each_msi_entry((desc), &(pdev)->dev)
-
 struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc);
-void *msi_desc_to_pci_sysdata(struct msi_desc *desc);
 void pci_write_msi_msg(unsigned int irq, struct msi_msg *msg);
 #else /* CONFIG_PCI_MSI */
-static inline void *msi_desc_to_pci_sysdata(struct msi_desc *desc)
-{
-	return NULL;
-}
 static inline void pci_write_msi_msg(unsigned int irq, struct msi_msg *msg)
 {
 }
 #endif /* CONFIG_PCI_MSI */
 
-struct msi_desc *alloc_msi_entry(struct device *dev, int nvec,
-				 const struct irq_affinity_desc *affinity);
-void free_msi_entry(struct msi_desc *entry);
+int msi_add_msi_desc(struct device *dev, struct msi_desc *init_desc);
+void msi_free_msi_descs_range(struct device *dev, enum msi_desc_filter filter,
+			      unsigned int first_index, unsigned int last_index);
+
+/**
+ * msi_free_msi_descs - Free MSI descriptors of a device
+ * @dev:	Device to free the descriptors
+ */
+static inline void msi_free_msi_descs(struct device *dev)
+{
+	msi_free_msi_descs_range(dev, MSI_DESC_ALL, 0, MSI_MAX_INDEX);
+}
+
 void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
 void __pci_write_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
 
 void pci_msi_mask_irq(struct irq_data *data);
 void pci_msi_unmask_irq(struct irq_data *data);
 
-const struct attribute_group **msi_populate_sysfs(struct device *dev);
-void msi_destroy_sysfs(struct device *dev,
-		       const struct attribute_group **msi_irq_groups);
-
 /*
  * The arch hooks to setup up msi irqs. Default functions are implemented
  * as weak symbols so that they /can/ be overriden by architecture specific
@@ -256,25 +278,20 @@ int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc);
 void arch_teardown_msi_irq(unsigned int irq);
 int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
 void arch_teardown_msi_irqs(struct pci_dev *dev);
-#else
-static inline int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
-{
-	WARN_ON_ONCE(1);
-	return -ENODEV;
-}
-
-static inline void arch_teardown_msi_irqs(struct pci_dev *dev)
-{
-	WARN_ON_ONCE(1);
-}
-#endif
+#ifdef CONFIG_SYSFS
+int msi_device_populate_sysfs(struct device *dev);
+void msi_device_destroy_sysfs(struct device *dev);
+#else /* CONFIG_SYSFS */
+static inline int msi_device_populate_sysfs(struct device *dev) { return 0; }
+static inline void msi_device_destroy_sysfs(struct device *dev) { }
+#endif /* !CONFIG_SYSFS */
+#endif /* CONFIG_PCI_MSI_ARCH_FALLBACKS */
 
 /*
- * The restore hooks are still available as they are useful even
- * for fully irq domain based setups. Courtesy to XEN/X86.
+ * The restore hook is still available even for fully irq domain based
+ * setups. Courtesy to XEN/X86.
  */
-void arch_restore_msi_irqs(struct pci_dev *dev);
-void default_restore_msi_irqs(struct pci_dev *dev);
+bool arch_restore_msi_irqs(struct pci_dev *dev);
 
 #ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
 
@@ -294,20 +311,17 @@ struct msi_domain_info;
  * @msi_free:		Domain specific function to free a MSI interrupts
  * @msi_check:		Callback for verification of the domain/info/dev data
  * @msi_prepare:	Prepare the allocation of the interrupts in the domain
- * @msi_finish:		Optional callback to finalize the allocation
  * @set_desc:		Set the msi descriptor for an interrupt
- * @handle_error:	Optional error handler if the allocation fails
  * @domain_alloc_irqs:	Optional function to override the default allocation
  *			function.
  * @domain_free_irqs:	Optional function to override the default free
  *			function.
  *
- * @get_hwirq, @msi_init and @msi_free are callbacks used by
- * msi_create_irq_domain() and related interfaces
+ * @get_hwirq, @msi_init and @msi_free are callbacks used by the underlying
+ * irqdomain.
  *
- * @msi_check, @msi_prepare, @msi_finish, @set_desc and @handle_error
- * are callbacks used by msi_domain_alloc_irqs() and related
- * interfaces which are based on msi_desc.
+ * @msi_check, @msi_prepare and @set_desc are callbacks used by
+ * msi_domain_alloc/free_irqs().
  *
  * @domain_alloc_irqs, @domain_free_irqs can be used to override the
  * default allocation/free functions (__msi_domain_alloc/free_irqs). This
@@ -341,11 +355,8 @@ struct msi_domain_ops {
 	int		(*msi_prepare)(struct irq_domain *domain,
 				       struct device *dev, int nvec,
 				       msi_alloc_info_t *arg);
-	void		(*msi_finish)(msi_alloc_info_t *arg, int retval);
 	void		(*set_desc)(msi_alloc_info_t *arg,
 				    struct msi_desc *desc);
-	int		(*handle_error)(struct irq_domain *domain,
-					struct msi_desc *desc, int error);
 	int		(*domain_alloc_irqs)(struct irq_domain *domain,
 					     struct device *dev, int nvec);
 	void		(*domain_free_irqs)(struct irq_domain *domain,
@@ -399,6 +410,14 @@ enum {
 	MSI_FLAG_MUST_REACTIVATE	= (1 << 5),
 	/* Is level-triggered capable, using two messages */
 	MSI_FLAG_LEVEL_CAPABLE		= (1 << 6),
+	/* Populate sysfs on alloc() and destroy it on free() */
+	MSI_FLAG_DEV_SYSFS		= (1 << 7),
+	/* MSI-X entries must be contiguous */
+	MSI_FLAG_MSIX_CONTIGUOUS	= (1 << 8),
+	/* Allocate simple MSI descriptors */
+	MSI_FLAG_ALLOC_SIMPLE_MSI_DESCS	= (1 << 9),
+	/* Free MSI descriptors */
+	MSI_FLAG_FREE_MSI_DESCS		= (1 << 10),
 };
 
 int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask,
@@ -409,9 +428,12 @@ struct irq_domain *msi_create_irq_domain(struct fwnode_handle *fwnode,
 					 struct irq_domain *parent);
 int __msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev,
 			    int nvec);
+int msi_domain_alloc_irqs_descs_locked(struct irq_domain *domain, struct device *dev,
+				       int nvec);
 int msi_domain_alloc_irqs(struct irq_domain *domain, struct device *dev,
 			  int nvec);
 void __msi_domain_free_irqs(struct irq_domain *domain, struct device *dev);
+void msi_domain_free_irqs_descs_locked(struct irq_domain *domain, struct device *dev);
 void msi_domain_free_irqs(struct irq_domain *domain, struct device *dev);
 struct msi_domain_info *msi_get_domain_info(struct irq_domain *domain);
 
@@ -440,20 +462,17 @@ __platform_msi_create_device_domain(struct device *dev,
 #define platform_msi_create_device_tree_domain(dev, nvec, write, ops, data) \
 	__platform_msi_create_device_domain(dev, nvec, true, write, ops, data)
 
-int platform_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
-			      unsigned int nr_irqs);
-void platform_msi_domain_free(struct irq_domain *domain, unsigned int virq,
-			      unsigned int nvec);
+int platform_msi_device_domain_alloc(struct irq_domain *domain, unsigned int virq,
+				     unsigned int nr_irqs);
+void platform_msi_device_domain_free(struct irq_domain *domain, unsigned int virq,
+				     unsigned int nvec);
 void *platform_msi_get_host_data(struct irq_domain *domain);
 #endif /* CONFIG_GENERIC_MSI_IRQ_DOMAIN */
 
 #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
-void pci_msi_domain_write_msg(struct irq_data *irq_data, struct msi_msg *msg);
 struct irq_domain *pci_msi_create_irq_domain(struct fwnode_handle *fwnode,
 					     struct msi_domain_info *info,
 					     struct irq_domain *parent);
-int pci_msi_domain_check_cap(struct irq_domain *domain,
-			     struct msi_domain_info *info, struct device *dev);
 u32 pci_msi_domain_get_msi_rid(struct irq_domain *domain, struct pci_dev *pdev);
 struct irq_domain *pci_msi_get_device_domain(struct pci_dev *pdev);
 bool pci_dev_has_special_msi_domain(struct pci_dev *pdev);
diff --git a/include/linux/mtd/latch-addr-flash.h b/include/linux/mtd/latch-addr-flash.h
deleted file mode 100644
index e94b8e128074..000000000000
--- a/include/linux/mtd/latch-addr-flash.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Interface for NOR flash driver whose high address lines are latched
- *
- * Copyright © 2008 MontaVista Software, Inc. <source@mvista.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-#ifndef __LATCH_ADDR_FLASH__
-#define __LATCH_ADDR_FLASH__
-
-struct map_info;
-struct mtd_partition;
-
-struct latch_addr_flash_data {
-	unsigned int		width;
-	unsigned int		size;
-
-	int			(*init)(void *data, int cs);
-	void			(*done)(void *data);
-	void			(*set_window)(unsigned long offset, void *data);
-	void			*data;
-
-	unsigned int		nr_parts;
-	struct mtd_partition	*parts;
-};
-
-#endif
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index 88227044fc86..955aee14b0f7 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -72,8 +72,6 @@ struct mtd_oob_ops {
 	uint8_t		*oobbuf;
 };
 
-#define MTD_MAX_OOBFREE_ENTRIES_LARGE	32
-#define MTD_MAX_ECCPOS_ENTRIES_LARGE	640
 /**
  * struct mtd_oob_region - oob region definition
  * @offset: region offset
@@ -190,9 +188,6 @@ struct module;	/* only needed for owner field in mtd_info */
  */
 struct mtd_debug_info {
 	struct dentry *dfs_dir;
-
-	const char *partname;
-	const char *partid;
 };
 
 /**
@@ -394,10 +389,8 @@ struct mtd_info {
 	/* List of partitions attached to this MTD device */
 	struct list_head partitions;
 
-	union {
-		struct mtd_part part;
-		struct mtd_master master;
-	};
+	struct mtd_part part;
+	struct mtd_master master;
 };
 
 static inline struct mtd_info *mtd_get_master(struct mtd_info *mtd)
@@ -713,4 +706,11 @@ static inline int mtd_is_bitflip_or_eccerr(int err) {
 
 unsigned mtd_mmap_capabilities(struct mtd_info *mtd);
 
+#ifdef CONFIG_DEBUG_FS
+bool mtd_check_expert_analysis_mode(void);
+#else
+static inline bool mtd_check_expert_analysis_mode(void) { return false; }
+#endif
+
+
 #endif /* __MTD_MTD_H__ */
diff --git a/include/linux/mtd/nand-ecc-mxic.h b/include/linux/mtd/nand-ecc-mxic.h
new file mode 100644
index 000000000000..b125926e458c
--- /dev/null
+++ b/include/linux/mtd/nand-ecc-mxic.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright © 2019 Macronix
+ * Author: Miquèl Raynal <miquel.raynal@bootlin.com>
+ *
+ * Header for the Macronix external ECC engine.
+ */
+
+#ifndef __MTD_NAND_ECC_MXIC_H__
+#define __MTD_NAND_ECC_MXIC_H__
+
+#include <linux/platform_device.h>
+#include <linux/device.h>
+
+struct mxic_ecc_engine;
+
+#if IS_ENABLED(CONFIG_MTD_NAND_ECC_MXIC) && IS_REACHABLE(CONFIG_MTD_NAND_CORE)
+
+struct nand_ecc_engine_ops *mxic_ecc_get_pipelined_ops(void);
+struct nand_ecc_engine *mxic_ecc_get_pipelined_engine(struct platform_device *spi_pdev);
+void mxic_ecc_put_pipelined_engine(struct nand_ecc_engine *eng);
+int mxic_ecc_process_data_pipelined(struct nand_ecc_engine *eng,
+				    unsigned int direction, dma_addr_t dirmap);
+
+#else /* !CONFIG_MTD_NAND_ECC_MXIC */
+
+static inline struct nand_ecc_engine_ops *mxic_ecc_get_pipelined_ops(void)
+{
+	return NULL;
+}
+
+static inline struct nand_ecc_engine *
+mxic_ecc_get_pipelined_engine(struct platform_device *spi_pdev)
+{
+	return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline void mxic_ecc_put_pipelined_engine(struct nand_ecc_engine *eng) {}
+
+static inline int mxic_ecc_process_data_pipelined(struct nand_ecc_engine *eng,
+						  unsigned int direction,
+						  dma_addr_t dirmap)
+{
+	return -EOPNOTSUPP;
+}
+
+#endif /* CONFIG_MTD_NAND_ECC_MXIC */
+
+#endif /* __MTD_NAND_ECC_MXIC_H__ */
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 32fc7edf65b3..c3693bb87b4c 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -264,11 +264,35 @@ struct nand_ecc_engine_ops {
 };
 
 /**
+ * enum nand_ecc_engine_integration - How the NAND ECC engine is integrated
+ * @NAND_ECC_ENGINE_INTEGRATION_INVALID: Invalid value
+ * @NAND_ECC_ENGINE_INTEGRATION_PIPELINED: Pipelined engine, performs on-the-fly
+ *                                         correction, does not need to copy
+ *                                         data around
+ * @NAND_ECC_ENGINE_INTEGRATION_EXTERNAL: External engine, needs to bring the
+ *                                        data into its own area before use
+ */
+enum nand_ecc_engine_integration {
+	NAND_ECC_ENGINE_INTEGRATION_INVALID,
+	NAND_ECC_ENGINE_INTEGRATION_PIPELINED,
+	NAND_ECC_ENGINE_INTEGRATION_EXTERNAL,
+};
+
+/**
  * struct nand_ecc_engine - ECC engine abstraction for NAND devices
+ * @dev: Host device
+ * @node: Private field for registration time
  * @ops: ECC engine operations
+ * @integration: How the engine is integrated with the host
+ *               (only relevant on %NAND_ECC_ENGINE_TYPE_ON_HOST engines)
+ * @priv: Private data
  */
 struct nand_ecc_engine {
+	struct device *dev;
+	struct list_head node;
 	struct nand_ecc_engine_ops *ops;
+	enum nand_ecc_engine_integration integration;
+	void *priv;
 };
 
 void of_get_nand_ecc_user_config(struct nand_device *nand);
@@ -279,8 +303,28 @@ int nand_ecc_prepare_io_req(struct nand_device *nand,
 int nand_ecc_finish_io_req(struct nand_device *nand,
 			   struct nand_page_io_req *req);
 bool nand_ecc_is_strong_enough(struct nand_device *nand);
+
+#if IS_REACHABLE(CONFIG_MTD_NAND_CORE)
+int nand_ecc_register_on_host_hw_engine(struct nand_ecc_engine *engine);
+int nand_ecc_unregister_on_host_hw_engine(struct nand_ecc_engine *engine);
+#else
+static inline int
+nand_ecc_register_on_host_hw_engine(struct nand_ecc_engine *engine)
+{
+	return -ENOTSUPP;
+}
+static inline int
+nand_ecc_unregister_on_host_hw_engine(struct nand_ecc_engine *engine)
+{
+	return -ENOTSUPP;
+}
+#endif
+
 struct nand_ecc_engine *nand_ecc_get_sw_engine(struct nand_device *nand);
 struct nand_ecc_engine *nand_ecc_get_on_die_hw_engine(struct nand_device *nand);
+struct nand_ecc_engine *nand_ecc_get_on_host_hw_engine(struct nand_device *nand);
+void nand_ecc_put_on_host_hw_engine(struct nand_device *nand);
+struct device *nand_ecc_get_engine_dev(struct device *host);
 
 #if IS_ENABLED(CONFIG_MTD_NAND_ECC_SW_HAMMING)
 struct nand_ecc_engine *nand_ecc_sw_hamming_get_engine(void);
@@ -962,6 +1006,11 @@ int nanddev_markbad(struct nand_device *nand, const struct nand_pos *pos);
 int nanddev_ecc_engine_init(struct nand_device *nand);
 void nanddev_ecc_engine_cleanup(struct nand_device *nand);
 
+static inline void *nand_to_ecc_ctx(struct nand_device *nand)
+{
+	return nand->ecc.ctx.priv;
+}
+
 /* BBT related functions */
 enum nand_bbt_block_status {
 	NAND_BBT_BLOCK_STATUS_UNKNOWN,
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index b2f9dd3cbd69..dcf90144d70b 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -1240,6 +1240,7 @@ struct nand_secure_region {
  * @lock: Lock protecting the suspended field. Also used to serialize accesses
  *        to the NAND device
  * @suspended: Set to 1 when the device is suspended, 0 when it's not
+ * @resume_wq: wait queue to sleep if rawnand is in suspended state.
  * @cur_cs: Currently selected target. -1 means no target selected, otherwise we
  *          should always have cur_cs >= 0 && cur_cs < nanddev_ntargets().
  *          NAND Controller drivers should not modify this value, but they're
@@ -1294,6 +1295,7 @@ struct nand_chip {
 	/* Internals */
 	struct mutex lock;
 	unsigned int suspended : 1;
+	wait_queue_head_t resume_wq;
 	int cur_cs;
 	int read_retries;
 	struct nand_secure_region *secure_regions;
@@ -1539,6 +1541,8 @@ int nand_read_data_op(struct nand_chip *chip, void *buf, unsigned int len,
 		      bool force_8bit, bool check_only);
 int nand_write_data_op(struct nand_chip *chip, const void *buf,
 		       unsigned int len, bool force_8bit);
+int nand_read_page_hwecc_oob_first(struct nand_chip *chip, uint8_t *buf,
+				   int oob_required, int page);
 
 /* Scan and identify a NAND device */
 int nand_scan_with_ids(struct nand_chip *chip, unsigned int max_chips,
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index f67457748ed8..5e25a7b75ae2 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -47,8 +47,6 @@
 #define SPINOR_OP_RDID		0x9f	/* Read JEDEC ID */
 #define SPINOR_OP_RDSFDP	0x5a	/* Read SFDP */
 #define SPINOR_OP_RDCR		0x35	/* Read configuration register */
-#define SPINOR_OP_RDFSR		0x70	/* Read flag status register */
-#define SPINOR_OP_CLFSR		0x50	/* Clear flag status register */
 #define SPINOR_OP_RDEAR		0xc8	/* Read Extended Address Register */
 #define SPINOR_OP_WREAR		0xc5	/* Write Extended Address Register */
 #define SPINOR_OP_SRSTEN	0x66	/* Software Reset Enable */
@@ -86,22 +84,12 @@
 #define SPINOR_OP_BP		0x02	/* Byte program */
 #define SPINOR_OP_AAI_WP	0xad	/* Auto address increment word program */
 
-/* Used for S3AN flashes only */
-#define SPINOR_OP_XSE		0x50	/* Sector erase */
-#define SPINOR_OP_XPP		0x82	/* Page program */
-#define SPINOR_OP_XRDSR		0xd7	/* Read status register */
-
-#define XSR_PAGESIZE		BIT(0)	/* Page size in Po2 or Linear */
-#define XSR_RDY			BIT(7)	/* Ready */
-
-
 /* Used for Macronix and Winbond flashes. */
 #define SPINOR_OP_EN4B		0xb7	/* Enter 4-byte mode */
 #define SPINOR_OP_EX4B		0xe9	/* Exit 4-byte mode */
 
 /* Used for Spansion flashes only. */
 #define SPINOR_OP_BRWR		0x17	/* Bank register write */
-#define SPINOR_OP_CLSR		0x30	/* Clear status register 1 */
 
 /* Used for Micron flashes only. */
 #define SPINOR_OP_RD_EVCR      0x65    /* Read EVCR register */
@@ -135,12 +123,6 @@
 /* Enhanced Volatile Configuration Register bits */
 #define EVCR_QUAD_EN_MICRON	BIT(7)	/* Micron Quad I/O */
 
-/* Flag Status Register bits */
-#define FSR_READY		BIT(7)	/* Device status, 0 = Busy, 1 = Ready */
-#define FSR_E_ERR		BIT(5)	/* Erase operation status */
-#define FSR_P_ERR		BIT(4)	/* Program operation status */
-#define FSR_PT_ERR		BIT(1)	/* Protection error bit */
-
 /* Status Register 2 bits. */
 #define SR2_QUAD_EN_BIT1	BIT(1)
 #define SR2_LB1			BIT(3)	/* Security Register Lock Bit 1 */
@@ -371,7 +353,6 @@ struct spi_nor_flash_parameter;
  * @bouncebuf_size:	size of the bounce buffer
  * @info:		SPI NOR part JEDEC MFR ID and other info
  * @manufacturer:	SPI NOR manufacturer
- * @page_size:		the page size of the SPI NOR
  * @addr_width:		number of address bytes
  * @erase_opcode:	the opcode for erasing a sector
  * @read_opcode:	the read opcode
@@ -401,7 +382,6 @@ struct spi_nor {
 	size_t			bouncebuf_size;
 	const struct flash_info	*info;
 	const struct spi_nor_manufacturer *manufacturer;
-	u32			page_size;
 	u8			addr_width;
 	u8			erase_opcode;
 	u8			read_opcode;
diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h
index 6988956b8492..3aa28240a77f 100644
--- a/include/linux/mtd/spinand.h
+++ b/include/linux/mtd/spinand.h
@@ -389,6 +389,8 @@ struct spinand_info {
 struct spinand_dirmap {
 	struct spi_mem_dirmap_desc *wdesc;
 	struct spi_mem_dirmap_desc *rdesc;
+	struct spi_mem_dirmap_desc *wdesc_ecc;
+	struct spi_mem_dirmap_desc *rdesc_ecc;
 };
 
 /**
diff --git a/include/linux/mutex_api.h b/include/linux/mutex_api.h
new file mode 100644
index 000000000000..85ab9491e13e
--- /dev/null
+++ b/include/linux/mutex_api.h
@@ -0,0 +1 @@
+#include <linux/mutex.h>
diff --git a/include/linux/mux/consumer.h b/include/linux/mux/consumer.h
index 5fc6bb2fefad..2e25c838f831 100644
--- a/include/linux/mux/consumer.h
+++ b/include/linux/mux/consumer.h
@@ -14,18 +14,51 @@
 
 struct device;
 struct mux_control;
+struct mux_state;
 
 unsigned int mux_control_states(struct mux_control *mux);
-int __must_check mux_control_select(struct mux_control *mux,
-				    unsigned int state);
-int __must_check mux_control_try_select(struct mux_control *mux,
-					unsigned int state);
+int __must_check mux_control_select_delay(struct mux_control *mux,
+					  unsigned int state,
+					  unsigned int delay_us);
+int __must_check mux_state_select_delay(struct mux_state *mstate,
+					unsigned int delay_us);
+int __must_check mux_control_try_select_delay(struct mux_control *mux,
+					      unsigned int state,
+					      unsigned int delay_us);
+int __must_check mux_state_try_select_delay(struct mux_state *mstate,
+					    unsigned int delay_us);
+
+static inline int __must_check mux_control_select(struct mux_control *mux,
+						  unsigned int state)
+{
+	return mux_control_select_delay(mux, state, 0);
+}
+
+static inline int __must_check mux_state_select(struct mux_state *mstate)
+{
+	return mux_state_select_delay(mstate, 0);
+}
+
+static inline int __must_check mux_control_try_select(struct mux_control *mux,
+						      unsigned int state)
+{
+	return mux_control_try_select_delay(mux, state, 0);
+}
+
+static inline int __must_check mux_state_try_select(struct mux_state *mstate)
+{
+	return mux_state_try_select_delay(mstate, 0);
+}
+
 int mux_control_deselect(struct mux_control *mux);
+int mux_state_deselect(struct mux_state *mstate);
 
 struct mux_control *mux_control_get(struct device *dev, const char *mux_name);
 void mux_control_put(struct mux_control *mux);
 
 struct mux_control *devm_mux_control_get(struct device *dev,
 					 const char *mux_name);
+struct mux_state *devm_mux_state_get(struct device *dev,
+				     const char *mux_name);
 
 #endif /* _LINUX_MUX_CONSUMER_H */
diff --git a/include/linux/mux/driver.h b/include/linux/mux/driver.h
index 627a2c6bc02d..18824064f8c0 100644
--- a/include/linux/mux/driver.h
+++ b/include/linux/mux/driver.h
@@ -12,6 +12,7 @@
 
 #include <dt-bindings/mux/mux.h>
 #include <linux/device.h>
+#include <linux/ktime.h>
 #include <linux/semaphore.h>
 
 struct mux_chip;
@@ -33,6 +34,7 @@ struct mux_control_ops {
  * @states:		The number of mux controller states.
  * @idle_state:		The mux controller state to use when inactive, or one
  *			of MUX_IDLE_AS_IS and MUX_IDLE_DISCONNECT.
+ * @last_change:	Timestamp of last change
  *
  * Mux drivers may only change @states and @idle_state, and may only do so
  * between allocation and registration of the mux controller. Specifically,
@@ -47,6 +49,8 @@ struct mux_control {
 
 	unsigned int states;
 	int idle_state;
+
+	ktime_t last_change;
 };
 
 /**
diff --git a/include/linux/nd.h b/include/linux/nd.h
index ee9ad76afbba..b9771ba1ef87 100644
--- a/include/linux/nd.h
+++ b/include/linux/nd.h
@@ -8,6 +8,7 @@
 #include <linux/ndctl.h>
 #include <linux/device.h>
 #include <linux/badblocks.h>
+#include <linux/perf_event.h>
 
 enum nvdimm_event {
 	NVDIMM_REVALIDATE_POISON,
@@ -23,6 +24,57 @@ enum nvdimm_claim_class {
 	NVDIMM_CCLASS_UNKNOWN,
 };
 
+#define NVDIMM_EVENT_VAR(_id)  event_attr_##_id
+#define NVDIMM_EVENT_PTR(_id)  (&event_attr_##_id.attr.attr)
+
+#define NVDIMM_EVENT_ATTR(_name, _id)				\
+	PMU_EVENT_ATTR(_name, NVDIMM_EVENT_VAR(_id), _id,	\
+			nvdimm_events_sysfs_show)
+
+/* Event attribute array index */
+#define NVDIMM_PMU_FORMAT_ATTR	0
+#define NVDIMM_PMU_EVENT_ATTR	1
+#define NVDIMM_PMU_CPUMASK_ATTR	2
+#define NVDIMM_PMU_NULL_ATTR	3
+
+/**
+ * struct nvdimm_pmu - data structure for nvdimm perf driver
+ * @pmu: pmu data structure for nvdimm performance stats.
+ * @dev: nvdimm device pointer.
+ * @cpu: designated cpu for counter access.
+ * @node: node for cpu hotplug notifier link.
+ * @cpuhp_state: state for cpu hotplug notification.
+ * @arch_cpumask: cpumask to get designated cpu for counter access.
+ */
+struct nvdimm_pmu {
+	struct pmu pmu;
+	struct device *dev;
+	int cpu;
+	struct hlist_node node;
+	enum cpuhp_state cpuhp_state;
+	/* cpumask provided by arch/platform specific code */
+	struct cpumask arch_cpumask;
+};
+
+struct platform_device;
+
+#ifdef CONFIG_PERF_EVENTS
+extern ssize_t nvdimm_events_sysfs_show(struct device *dev,
+					struct device_attribute *attr,
+					char *page);
+
+int register_nvdimm_pmu(struct nvdimm_pmu *nvdimm, struct platform_device *pdev);
+void unregister_nvdimm_pmu(struct nvdimm_pmu *nd_pmu);
+
+#else
+static inline int register_nvdimm_pmu(struct nvdimm_pmu *nvdimm, struct platform_device *pdev)
+{
+	return -ENXIO;
+}
+
+static inline void unregister_nvdimm_pmu(struct nvdimm_pmu *nd_pmu) { }
+#endif
+
 struct nd_device_driver {
 	struct device_driver drv;
 	unsigned long type;
@@ -88,31 +140,10 @@ struct nd_namespace_pmem {
 	struct nd_namespace_io nsio;
 	unsigned long lbasize;
 	char *alt_name;
-	u8 *uuid;
+	uuid_t *uuid;
 	int id;
 };
 
-/**
- * struct nd_namespace_blk - namespace for dimm-bounded persistent memory
- * @alt_name: namespace name supplied in the dimm label
- * @uuid: namespace name supplied in the dimm label
- * @id: ida allocated id
- * @lbasize: blk namespaces have a native sector size when btt not present
- * @size: sum of all the resource ranges allocated to this namespace
- * @num_resources: number of dpa extents to claim
- * @res: discontiguous dpa extents for given dimm
- */
-struct nd_namespace_blk {
-	struct nd_namespace_common common;
-	char *alt_name;
-	u8 *uuid;
-	int id;
-	unsigned long lbasize;
-	resource_size_t size;
-	int num_resources;
-	struct resource **res;
-};
-
 static inline struct nd_namespace_io *to_nd_namespace_io(const struct device *dev)
 {
 	return container_of(dev, struct nd_namespace_io, common.dev);
@@ -125,11 +156,6 @@ static inline struct nd_namespace_pmem *to_nd_namespace_pmem(const struct device
 	return container_of(nsio, struct nd_namespace_pmem, nsio);
 }
 
-static inline struct nd_namespace_blk *to_nd_namespace_blk(const struct device *dev)
-{
-	return container_of(dev, struct nd_namespace_blk, common.dev);
-}
-
 /**
  * nvdimm_read_bytes() - synchronously read bytes from an nvdimm namespace
  * @ndns: device to read
diff --git a/include/linux/net.h b/include/linux/net.h
index ba736b457a06..12093f4db50c 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -125,6 +125,25 @@ struct socket {
 	struct socket_wq	wq;
 };
 
+/*
+ * "descriptor" for what we're up to with a read.
+ * This allows us to use the same read code yet
+ * have multiple different users of the data that
+ * we read from a file.
+ *
+ * The simplest case just copies the data to user
+ * mode.
+ */
+typedef struct {
+	size_t written;
+	size_t count;
+	union {
+		char __user *buf;
+		void *data;
+	} arg;
+	int error;
+} read_descriptor_t;
+
 struct vm_area_struct;
 struct page;
 struct sockaddr;
diff --git a/include/linux/net/intel/i40e_client.h b/include/linux/net/intel/i40e_client.h
index 6b3267b49755..ed42bd5f639f 100644
--- a/include/linux/net/intel/i40e_client.h
+++ b/include/linux/net/intel/i40e_client.h
@@ -26,11 +26,6 @@ struct i40e_client_version {
 	u8 rsvd;
 };
 
-enum i40e_client_state {
-	__I40E_CLIENT_NULL,
-	__I40E_CLIENT_REGISTERED
-};
-
 enum i40e_client_instance_state {
 	__I40E_CLIENT_INSTANCE_NONE,
 	__I40E_CLIENT_INSTANCE_OPENED,
@@ -190,11 +185,6 @@ struct i40e_client {
 	const struct i40e_client_ops *ops; /* client ops provided by the client */
 };
 
-static inline bool i40e_client_is_registered(struct i40e_client *client)
-{
-	return test_bit(__I40E_CLIENT_REGISTERED, &client->state);
-}
-
 void i40e_client_device_register(struct i40e_info *ldev, struct i40e_client *client);
 void i40e_client_device_unregister(struct i40e_info *ldev);
 
diff --git a/include/linux/net/intel/iidc.h b/include/linux/net/intel/iidc.h
index e32f6712aee0..1c1332e4df26 100644
--- a/include/linux/net/intel/iidc.h
+++ b/include/linux/net/intel/iidc.h
@@ -26,7 +26,14 @@ enum iidc_reset_type {
 	IIDC_GLOBR,
 };
 
+enum iidc_rdma_protocol {
+	IIDC_RDMA_PROTOCOL_IWARP = BIT(0),
+	IIDC_RDMA_PROTOCOL_ROCEV2 = BIT(1),
+};
+
 #define IIDC_MAX_USER_PRIORITY		8
+#define IIDC_MAX_DSCP_MAPPING		64
+#define IIDC_DSCP_PFC_MODE		0x1
 
 /* Struct to hold per RDMA Qset info */
 struct iidc_rdma_qset_params {
@@ -55,6 +62,8 @@ struct iidc_qos_params {
 	u8 vport_relative_bw;
 	u8 vport_priority_type;
 	u8 num_tc;
+	u8 pfc_mode;
+	u8 dscp_map[IIDC_MAX_DSCP_MAPPING];
 };
 
 struct iidc_event {
@@ -70,8 +79,6 @@ int ice_rdma_request_reset(struct ice_pf *pf, enum iidc_reset_type reset_type);
 int ice_rdma_update_vsi_filter(struct ice_pf *pf, u16 vsi_id, bool enable);
 void ice_get_qos_params(struct ice_pf *pf, struct iidc_qos_params *qos);
 
-#define IIDC_RDMA_ROCE_NAME	"roce"
-
 /* Structure representing auxiliary driver tailored information about the core
  * PCI dev, each auxiliary driver using the IIDC interface will have an
  * instance of this struct dedicated to it.
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 2c6b9e416225..7c2d77d75a88 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -169,7 +169,7 @@ enum {
 #define NETIF_F_HW_HSR_FWD	__NETIF_F(HW_HSR_FWD)
 #define NETIF_F_HW_HSR_DUP	__NETIF_F(HW_HSR_DUP)
 
-/* Finds the next feature with the highest number of the range of start till 0.
+/* Finds the next feature with the highest number of the range of start-1 till 0.
  */
 static inline int find_next_netdev_feature(u64 feature, unsigned long start)
 {
@@ -188,7 +188,7 @@ static inline int find_next_netdev_feature(u64 feature, unsigned long start)
 	for ((bit) = find_next_netdev_feature((mask_addr),		\
 					      NETDEV_FEATURE_COUNT);	\
 	     (bit) >= 0;						\
-	     (bit) = find_next_netdev_feature((mask_addr), (bit) - 1))
+	     (bit) = find_next_netdev_feature((mask_addr), (bit)))
 
 /* Features valid for ethtool to change */
 /* = all defined minus driver/device-class-related */
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index d79163208dfd..f736c020cde2 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -28,6 +28,7 @@
 #include <linux/prefetch.h>
 #include <asm/cache.h>
 #include <asm/byteorder.h>
+#include <asm/local.h>
 
 #include <linux/percpu.h>
 #include <linux/rculist.h>
@@ -48,6 +49,7 @@
 #include <uapi/linux/pkt_cls.h>
 #include <linux/hashtable.h>
 #include <linux/rbtree.h>
+#include <net/net_trackers.h>
 
 struct netpoll_info;
 struct device;
@@ -193,6 +195,14 @@ struct net_device_stats {
 	unsigned long	tx_compressed;
 };
 
+/* per-cpu stats, allocated on demand.
+ * Try to fit them in a single cache line, for dev_get_stats() sake.
+ */
+struct net_device_core_stats {
+	unsigned long	rx_dropped;
+	unsigned long	tx_dropped;
+	unsigned long	rx_nohandler;
+} __aligned(4 * sizeof(unsigned long));
 
 #include <linux/cache.h>
 #include <linux/skbuff.h>
@@ -299,7 +309,6 @@ enum netdev_state_t {
 	__LINK_STATE_TESTING,
 };
 
-
 struct gro_list {
 	struct list_head	list;
 	int			count;
@@ -579,6 +588,8 @@ struct netdev_queue {
  * read-mostly part
  */
 	struct net_device	*dev;
+	netdevice_tracker	dev_tracker;
+
 	struct Qdisc __rcu	*qdisc;
 	struct Qdisc		*qdisc_sleeping;
 #ifdef CONFIG_SYSFS
@@ -592,7 +603,7 @@ struct netdev_queue {
 	 * Number of TX timeouts for this queue
 	 * (/sys/class/net/DEV/Q/trans_timeout)
 	 */
-	unsigned long		trans_timeout;
+	atomic_long_t		trans_timeout;
 
 	/* Subordinate device that the queue has been assigned to */
 	struct net_device	*sb_dev;
@@ -734,6 +745,8 @@ struct netdev_rx_queue {
 #endif
 	struct kobject			kobj;
 	struct net_device		*dev;
+	netdevice_tracker		dev_tracker;
+
 #ifdef CONFIG_XDP_SOCKETS
 	struct xsk_buff_pool            *pool;
 #endif
@@ -887,7 +900,7 @@ struct net_device_path_stack {
 
 struct net_device_path_ctx {
 	const struct net_device *dev;
-	const u8		*daddr;
+	u8			daddr[ETH_ALEN];
 
 	int			num_vlans;
 	struct {
@@ -916,6 +929,7 @@ enum tc_setup_type {
 	TC_SETUP_QDISC_TBF,
 	TC_SETUP_QDISC_FIFO,
 	TC_SETUP_QDISC_HTB,
+	TC_SETUP_ACT,
 };
 
 /* These structures hold the attributes of bpf state that are being passed
@@ -1297,11 +1311,6 @@ struct netdev_net_notifier {
  *	TX queue.
  * int (*ndo_get_iflink)(const struct net_device *dev);
  *	Called to get the iflink value of this device.
- * void (*ndo_change_proto_down)(struct net_device *dev,
- *				 bool proto_down);
- *	This function is used to pass protocol port error state information
- *	to the switch driver. The switch driver can react to the proto_down
- *      by doing a phys down on the associated switch port.
  * int (*ndo_fill_metadata_dst)(struct net_device *dev, struct sk_buff *skb);
  *	This function is used to get egress tunnel information for given skb.
  *	This is useful for retrieving outer tunnel header parameters while
@@ -1542,8 +1551,6 @@ struct net_device_ops {
 						      int queue_index,
 						      u32 maxrate);
 	int			(*ndo_get_iflink)(const struct net_device *dev);
-	int			(*ndo_change_proto_down)(struct net_device *dev,
-							 bool proto_down);
 	int			(*ndo_fill_metadata_dst)(struct net_device *dev,
 						       struct sk_buff *skb);
 	void			(*ndo_set_rx_headroom)(struct net_device *dev,
@@ -1612,6 +1619,7 @@ struct net_device_ops {
  * @IFF_LIVE_RENAME_OK: rename is allowed while device is up and running
  * @IFF_TX_SKB_NO_LINEAR: device/driver is capable of xmitting frames with
  *	skb_headlen(skb) == 0 (data starts from frag0)
+ * @IFF_CHANGE_PROTO_DOWN: device supports setting carrier via IFLA_PROTO_DOWN
  */
 enum netdev_priv_flags {
 	IFF_802_1Q_VLAN			= 1<<0,
@@ -1646,6 +1654,7 @@ enum netdev_priv_flags {
 	IFF_L3MDEV_RX_HANDLER		= 1<<29,
 	IFF_LIVE_RENAME_OK		= 1<<30,
 	IFF_TX_SKB_NO_LINEAR		= 1<<31,
+	IFF_CHANGE_PROTO_DOWN		= BIT_ULL(32),
 };
 
 #define IFF_802_1Q_VLAN			IFF_802_1Q_VLAN
@@ -1735,12 +1744,8 @@ enum netdev_ml_priv_type {
  *	@stats:		Statistics struct, which was left as a legacy, use
  *			rtnl_link_stats64 instead
  *
- *	@rx_dropped:	Dropped packets by core network,
- *			do not use this in drivers
- *	@tx_dropped:	Dropped packets by core network,
+ *	@core_stats:	core networking counters,
  *			do not use this in drivers
- *	@rx_nohandler:	nohandler dropped packets by core network on
- *			inactive devices, do not use this in drivers
  *	@carrier_up_count:	Number of times the carrier has been up
  *	@carrier_down_count:	Number of times the carrier has been down
  *
@@ -1861,6 +1866,7 @@ enum netdev_ml_priv_type {
  *	@xps_maps:	XXX: need comments on this one
  *	@miniq_egress:		clsact qdisc specific data for
  *				egress processing
+ *	@nf_hooks_egress:	netfilter hooks executed for egress packets
  *	@qdisc_hash:		qdisc hash table
  *	@watchdog_timeo:	Represents the timeout that is used by
  *				the watchdog (see dev_watchdog())
@@ -1869,6 +1875,7 @@ enum netdev_ml_priv_type {
  *	@proto_down_reason:	reason a netdev interface is held down
  *	@pcpu_refcnt:		Number of references to this device
  *	@dev_refcnt:		Number of references to this device
+ *	@refcnt_tracker:	Tracker directory for tracked references to this device
  *	@todo_list:		Delayed register/unregister
  *	@link_watch_list:	XXX: need comments on this one
  *
@@ -1892,6 +1899,8 @@ enum netdev_ml_priv_type {
  *	@garp_port:	GARP
  *	@mrp_port:	MRP
  *
+ *	@dm_private:	Drop monitor private
+ *
  *	@dev:		Class/net/name entry
  *	@sysfs_groups:	Space for optional device, statistics and wireless
  *			sysfs groups
@@ -1916,7 +1925,6 @@ enum netdev_ml_priv_type {
  *	@sfp_bus:	attached &struct sfp_bus structure.
  *
  *	@qdisc_tx_busylock: lockdep class annotating Qdisc->busylock spinlock
- *	@qdisc_running_key: lockdep class annotating Qdisc->running seqcount
  *
  *	@proto_down:	protocol port state information can be sent to the
  *			switch driver and used to set the phys state of the
@@ -1937,10 +1945,19 @@ enum netdev_ml_priv_type {
  *	@udp_tunnel_nic:	UDP tunnel offload state
  *	@xdp_state:		stores info on attached XDP BPF programs
  *
- *	@nested_level:	Used as as a parameter of spin_lock_nested() of
+ *	@nested_level:	Used as a parameter of spin_lock_nested() of
  *			dev->addr_list_lock.
  *	@unlink_list:	As netif_addr_lock() can be called recursively,
  *			keep a list of interfaces to be deleted.
+ *	@gro_max_size:	Maximum size of aggregated packet in generic
+ *			receive offload (GRO)
+ *
+ *	@dev_addr_shadow:	Copy of @dev_addr to catch direct writes.
+ *	@linkwatch_dev_tracker:	refcount tracker used by linkwatch.
+ *	@watchdog_dev_tracker:	refcount tracker used by watchdog.
+ *	@dev_registered_tracker:	tracker for reference held while
+ *					registered
+ *	@offload_xstats_l3:	L3 HW stats for this netdevice.
  *
  *	FIXME: cleanup struct net_device such that network protocol info
  *	moves out.
@@ -1980,7 +1997,7 @@ struct net_device {
 
 	/* Read-mostly cache-line for fast-path access */
 	unsigned int		flags;
-	unsigned int		priv_flags;
+	unsigned long long	priv_flags;
 	const struct net_device_ops *netdev_ops;
 	int			ifindex;
 	unsigned short		gflags;
@@ -2013,9 +2030,7 @@ struct net_device {
 
 	struct net_device_stats	stats; /* not used by modern drivers */
 
-	atomic_long_t		rx_dropped;
-	atomic_long_t		tx_dropped;
-	atomic_long_t		rx_nohandler;
+	struct net_device_core_stats __percpu *core_stats;
 
 	/* Stats to monitor link on/off, flapping */
 	atomic_t		carrier_up_count;
@@ -2093,7 +2108,7 @@ struct net_device {
 #if IS_ENABLED(CONFIG_TIPC)
 	struct tipc_bearer __rcu *tipc_ptr;
 #endif
-#if IS_ENABLED(CONFIG_IRDA) || IS_ENABLED(CONFIG_ATALK)
+#if IS_ENABLED(CONFIG_ATALK)
 	void 			*atalk_ptr;
 #endif
 	struct in_device __rcu	*ip_ptr;
@@ -2117,7 +2132,7 @@ struct net_device {
  * Cache lines mostly used on receive path (including eth_type_trans())
  */
 	/* Interface address info used in eth_type_trans() */
-	unsigned char		*dev_addr;
+	const unsigned char	*dev_addr;
 
 	struct netdev_rx_queue	*_rx;
 	unsigned int		num_rx_queues;
@@ -2126,6 +2141,8 @@ struct net_device {
 	struct bpf_prog __rcu	*xdp_prog;
 	unsigned long		gro_flush_timeout;
 	int			napi_defer_hard_irqs;
+#define GRO_MAX_SIZE		65536
+	unsigned int		gro_max_size;
 	rx_handler_func_t __rcu	*rx_handler;
 	void __rcu		*rx_handler_data;
 
@@ -2149,7 +2166,7 @@ struct net_device {
 	struct netdev_queue	*_tx ____cacheline_aligned_in_smp;
 	unsigned int		num_tx_queues;
 	unsigned int		real_num_tx_queues;
-	struct Qdisc		*qdisc;
+	struct Qdisc __rcu	*qdisc;
 	unsigned int		tx_queue_len;
 	spinlock_t		tx_global_lock;
 
@@ -2161,6 +2178,9 @@ struct net_device {
 #ifdef CONFIG_NET_CLS_ACT
 	struct mini_Qdisc __rcu	*miniq_egress;
 #endif
+#ifdef CONFIG_NETFILTER_EGRESS
+	struct nf_hook_entries __rcu *nf_hooks_egress;
+#endif
 
 #ifdef CONFIG_NET_SCHED
 	DECLARE_HASHTABLE	(qdisc_hash, 4);
@@ -2178,6 +2198,7 @@ struct net_device {
 #else
 	refcount_t		dev_refcnt;
 #endif
+	struct ref_tracker_dir	refcnt_tracker;
 
 	struct list_head	link_watch_list;
 
@@ -2221,7 +2242,9 @@ struct net_device {
 #if IS_ENABLED(CONFIG_MRP)
 	struct mrp_port __rcu	*mrp_port;
 #endif
-
+#if IS_ENABLED(CONFIG_NET_DROP_MONITOR)
+	struct dm_hw_stat_delta __rcu *dm_private;
+#endif
 	struct device		dev;
 	const struct attribute_group *sysfs_groups[4];
 	const struct attribute_group *sysfs_rx_queue_group;
@@ -2250,7 +2273,6 @@ struct net_device {
 	struct phy_device	*phydev;
 	struct sfp_bus		*sfp_bus;
 	struct lock_class_key	*qdisc_tx_busylock;
-	struct lock_class_key	*qdisc_running_key;
 	bool			proto_down;
 	unsigned		wol_enabled:1;
 	unsigned		threaded:1;
@@ -2266,6 +2288,12 @@ struct net_device {
 
 	/* protected by rtnl_lock */
 	struct bpf_xdp_entity	xdp_state[__MAX_XDP_MODE];
+
+	u8 dev_addr_shadow[MAX_ADDR_LEN];
+	netdevice_tracker	linkwatch_dev_tracker;
+	netdevice_tracker	watchdog_dev_tracker;
+	netdevice_tracker	dev_registered_tracker;
+	struct rtnl_hw_stats64	*offload_xstats_l3;
 };
 #define to_net_dev(d) container_of(d, struct net_device, dev)
 
@@ -2360,13 +2388,11 @@ static inline void netdev_for_each_tx_queue(struct net_device *dev,
 #define netdev_lockdep_set_classes(dev)				\
 {								\
 	static struct lock_class_key qdisc_tx_busylock_key;	\
-	static struct lock_class_key qdisc_running_key;		\
 	static struct lock_class_key qdisc_xmit_lock_key;	\
 	static struct lock_class_key dev_addr_list_lock_key;	\
 	unsigned int i;						\
 								\
 	(dev)->qdisc_tx_busylock = &qdisc_tx_busylock_key;	\
-	(dev)->qdisc_running_key = &qdisc_running_key;		\
 	lockdep_set_class(&(dev)->addr_list_lock,		\
 			  &dev_addr_list_lock_key);		\
 	for (i = 0; i < (dev)->num_tx_queues; i++)		\
@@ -2520,113 +2546,11 @@ static inline void netif_napi_del(struct napi_struct *napi)
 	synchronize_net();
 }
 
-struct napi_gro_cb {
-	/* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
-	void	*frag0;
-
-	/* Length of frag0. */
-	unsigned int frag0_len;
-
-	/* This indicates where we are processing relative to skb->data. */
-	int	data_offset;
-
-	/* This is non-zero if the packet cannot be merged with the new skb. */
-	u16	flush;
-
-	/* Save the IP ID here and check when we get to the transport layer */
-	u16	flush_id;
-
-	/* Number of segments aggregated. */
-	u16	count;
-
-	/* Start offset for remote checksum offload */
-	u16	gro_remcsum_start;
-
-	/* jiffies when first packet was created/queued */
-	unsigned long age;
-
-	/* Used in ipv6_gro_receive() and foo-over-udp */
-	u16	proto;
-
-	/* This is non-zero if the packet may be of the same flow. */
-	u8	same_flow:1;
-
-	/* Used in tunnel GRO receive */
-	u8	encap_mark:1;
-
-	/* GRO checksum is valid */
-	u8	csum_valid:1;
-
-	/* Number of checksums via CHECKSUM_UNNECESSARY */
-	u8	csum_cnt:3;
-
-	/* Free the skb? */
-	u8	free:2;
-#define NAPI_GRO_FREE		  1
-#define NAPI_GRO_FREE_STOLEN_HEAD 2
-
-	/* Used in foo-over-udp, set in udp[46]_gro_receive */
-	u8	is_ipv6:1;
-
-	/* Used in GRE, set in fou/gue_gro_receive */
-	u8	is_fou:1;
-
-	/* Used to determine if flush_id can be ignored */
-	u8	is_atomic:1;
-
-	/* Number of gro_receive callbacks this packet already went through */
-	u8 recursion_counter:4;
-
-	/* GRO is done by frag_list pointer chaining. */
-	u8	is_flist:1;
-
-	/* used to support CHECKSUM_COMPLETE for tunneling protocols */
-	__wsum	csum;
-
-	/* used in skb_gro_receive() slow path */
-	struct sk_buff *last;
-};
-
-#define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
-
-#define GRO_RECURSION_LIMIT 15
-static inline int gro_recursion_inc_test(struct sk_buff *skb)
-{
-	return ++NAPI_GRO_CB(skb)->recursion_counter == GRO_RECURSION_LIMIT;
-}
-
-typedef struct sk_buff *(*gro_receive_t)(struct list_head *, struct sk_buff *);
-static inline struct sk_buff *call_gro_receive(gro_receive_t cb,
-					       struct list_head *head,
-					       struct sk_buff *skb)
-{
-	if (unlikely(gro_recursion_inc_test(skb))) {
-		NAPI_GRO_CB(skb)->flush |= 1;
-		return NULL;
-	}
-
-	return cb(head, skb);
-}
-
-typedef struct sk_buff *(*gro_receive_sk_t)(struct sock *, struct list_head *,
-					    struct sk_buff *);
-static inline struct sk_buff *call_gro_receive_sk(gro_receive_sk_t cb,
-						  struct sock *sk,
-						  struct list_head *head,
-						  struct sk_buff *skb)
-{
-	if (unlikely(gro_recursion_inc_test(skb))) {
-		NAPI_GRO_CB(skb)->flush |= 1;
-		return NULL;
-	}
-
-	return cb(sk, head, skb);
-}
-
 struct packet_type {
 	__be16			type;	/* This is really htons(ether_type). */
 	bool			ignore_outgoing;
 	struct net_device	*dev;	/* NULL is wildcarded here	     */
+	netdevice_tracker	dev_tracker;
 	int			(*func) (struct sk_buff *,
 					 struct net_device *,
 					 struct packet_type *,
@@ -2636,6 +2560,7 @@ struct packet_type {
 					      struct net_device *);
 	bool			(*id_match)(struct packet_type *ptype,
 					    struct sock *sk);
+	struct net		*af_packet_net;
 	void			*af_packet_priv;
 	struct list_head	list;
 };
@@ -2809,6 +2734,10 @@ enum netdev_cmd {
 	NETDEV_CVLAN_FILTER_DROP_INFO,
 	NETDEV_SVLAN_FILTER_PUSH_INFO,
 	NETDEV_SVLAN_FILTER_DROP_INFO,
+	NETDEV_OFFLOAD_XSTATS_ENABLE,
+	NETDEV_OFFLOAD_XSTATS_DISABLE,
+	NETDEV_OFFLOAD_XSTATS_REPORT_USED,
+	NETDEV_OFFLOAD_XSTATS_REPORT_DELTA,
 };
 const char *netdev_cmd_to_name(enum netdev_cmd cmd);
 
@@ -2859,6 +2788,42 @@ struct netdev_notifier_pre_changeaddr_info {
 	const unsigned char *dev_addr;
 };
 
+enum netdev_offload_xstats_type {
+	NETDEV_OFFLOAD_XSTATS_TYPE_L3 = 1,
+};
+
+struct netdev_notifier_offload_xstats_info {
+	struct netdev_notifier_info info; /* must be first */
+	enum netdev_offload_xstats_type type;
+
+	union {
+		/* NETDEV_OFFLOAD_XSTATS_REPORT_DELTA */
+		struct netdev_notifier_offload_xstats_rd *report_delta;
+		/* NETDEV_OFFLOAD_XSTATS_REPORT_USED */
+		struct netdev_notifier_offload_xstats_ru *report_used;
+	};
+};
+
+int netdev_offload_xstats_enable(struct net_device *dev,
+				 enum netdev_offload_xstats_type type,
+				 struct netlink_ext_ack *extack);
+int netdev_offload_xstats_disable(struct net_device *dev,
+				  enum netdev_offload_xstats_type type);
+bool netdev_offload_xstats_enabled(const struct net_device *dev,
+				   enum netdev_offload_xstats_type type);
+int netdev_offload_xstats_get(struct net_device *dev,
+			      enum netdev_offload_xstats_type type,
+			      struct rtnl_hw_stats64 *stats, bool *used,
+			      struct netlink_ext_ack *extack);
+void
+netdev_offload_xstats_report_delta(struct netdev_notifier_offload_xstats_rd *rd,
+				   const struct rtnl_hw_stats64 *stats);
+void
+netdev_offload_xstats_report_used(struct netdev_notifier_offload_xstats_ru *ru);
+void netdev_offload_xstats_push_delta(struct net_device *dev,
+				      enum netdev_offload_xstats_type type,
+				      const struct rtnl_hw_stats64 *stats);
+
 static inline void netdev_notifier_info_init(struct netdev_notifier_info *info,
 					     struct net_device *dev)
 {
@@ -2955,6 +2920,7 @@ struct net_device *__dev_get_by_flags(struct net *net, unsigned short flags,
 struct net_device *dev_get_by_name(struct net *net, const char *name);
 struct net_device *dev_get_by_name_rcu(struct net *net, const char *name);
 struct net_device *__dev_get_by_name(struct net *net, const char *name);
+bool netdev_name_in_use(struct net *net, const char *name);
 int dev_alloc_name(struct net_device *dev, const char *name);
 int dev_open(struct net_device *dev, struct netlink_ext_ack *extack);
 void dev_close(struct net_device *dev);
@@ -3004,254 +2970,7 @@ struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
 struct net_device *dev_get_by_napi_id(unsigned int napi_id);
 int netdev_get_name(struct net *net, char *name, int ifindex);
 int dev_restart(struct net_device *dev);
-int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb);
-int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb);
-
-static inline unsigned int skb_gro_offset(const struct sk_buff *skb)
-{
-	return NAPI_GRO_CB(skb)->data_offset;
-}
-
-static inline unsigned int skb_gro_len(const struct sk_buff *skb)
-{
-	return skb->len - NAPI_GRO_CB(skb)->data_offset;
-}
-
-static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len)
-{
-	NAPI_GRO_CB(skb)->data_offset += len;
-}
-
-static inline void *skb_gro_header_fast(struct sk_buff *skb,
-					unsigned int offset)
-{
-	return NAPI_GRO_CB(skb)->frag0 + offset;
-}
-
-static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen)
-{
-	return NAPI_GRO_CB(skb)->frag0_len < hlen;
-}
-
-static inline void skb_gro_frag0_invalidate(struct sk_buff *skb)
-{
-	NAPI_GRO_CB(skb)->frag0 = NULL;
-	NAPI_GRO_CB(skb)->frag0_len = 0;
-}
-
-static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen,
-					unsigned int offset)
-{
-	if (!pskb_may_pull(skb, hlen))
-		return NULL;
-
-	skb_gro_frag0_invalidate(skb);
-	return skb->data + offset;
-}
-
-static inline void *skb_gro_network_header(struct sk_buff *skb)
-{
-	return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) +
-	       skb_network_offset(skb);
-}
 
-static inline void skb_gro_postpull_rcsum(struct sk_buff *skb,
-					const void *start, unsigned int len)
-{
-	if (NAPI_GRO_CB(skb)->csum_valid)
-		NAPI_GRO_CB(skb)->csum = csum_sub(NAPI_GRO_CB(skb)->csum,
-						  csum_partial(start, len, 0));
-}
-
-/* GRO checksum functions. These are logical equivalents of the normal
- * checksum functions (in skbuff.h) except that they operate on the GRO
- * offsets and fields in sk_buff.
- */
-
-__sum16 __skb_gro_checksum_complete(struct sk_buff *skb);
-
-static inline bool skb_at_gro_remcsum_start(struct sk_buff *skb)
-{
-	return (NAPI_GRO_CB(skb)->gro_remcsum_start == skb_gro_offset(skb));
-}
-
-static inline bool __skb_gro_checksum_validate_needed(struct sk_buff *skb,
-						      bool zero_okay,
-						      __sum16 check)
-{
-	return ((skb->ip_summed != CHECKSUM_PARTIAL ||
-		skb_checksum_start_offset(skb) <
-		 skb_gro_offset(skb)) &&
-		!skb_at_gro_remcsum_start(skb) &&
-		NAPI_GRO_CB(skb)->csum_cnt == 0 &&
-		(!zero_okay || check));
-}
-
-static inline __sum16 __skb_gro_checksum_validate_complete(struct sk_buff *skb,
-							   __wsum psum)
-{
-	if (NAPI_GRO_CB(skb)->csum_valid &&
-	    !csum_fold(csum_add(psum, NAPI_GRO_CB(skb)->csum)))
-		return 0;
-
-	NAPI_GRO_CB(skb)->csum = psum;
-
-	return __skb_gro_checksum_complete(skb);
-}
-
-static inline void skb_gro_incr_csum_unnecessary(struct sk_buff *skb)
-{
-	if (NAPI_GRO_CB(skb)->csum_cnt > 0) {
-		/* Consume a checksum from CHECKSUM_UNNECESSARY */
-		NAPI_GRO_CB(skb)->csum_cnt--;
-	} else {
-		/* Update skb for CHECKSUM_UNNECESSARY and csum_level when we
-		 * verified a new top level checksum or an encapsulated one
-		 * during GRO. This saves work if we fallback to normal path.
-		 */
-		__skb_incr_checksum_unnecessary(skb);
-	}
-}
-
-#define __skb_gro_checksum_validate(skb, proto, zero_okay, check,	\
-				    compute_pseudo)			\
-({									\
-	__sum16 __ret = 0;						\
-	if (__skb_gro_checksum_validate_needed(skb, zero_okay, check))	\
-		__ret = __skb_gro_checksum_validate_complete(skb,	\
-				compute_pseudo(skb, proto));		\
-	if (!__ret)							\
-		skb_gro_incr_csum_unnecessary(skb);			\
-	__ret;								\
-})
-
-#define skb_gro_checksum_validate(skb, proto, compute_pseudo)		\
-	__skb_gro_checksum_validate(skb, proto, false, 0, compute_pseudo)
-
-#define skb_gro_checksum_validate_zero_check(skb, proto, check,		\
-					     compute_pseudo)		\
-	__skb_gro_checksum_validate(skb, proto, true, check, compute_pseudo)
-
-#define skb_gro_checksum_simple_validate(skb)				\
-	__skb_gro_checksum_validate(skb, 0, false, 0, null_compute_pseudo)
-
-static inline bool __skb_gro_checksum_convert_check(struct sk_buff *skb)
-{
-	return (NAPI_GRO_CB(skb)->csum_cnt == 0 &&
-		!NAPI_GRO_CB(skb)->csum_valid);
-}
-
-static inline void __skb_gro_checksum_convert(struct sk_buff *skb,
-					      __wsum pseudo)
-{
-	NAPI_GRO_CB(skb)->csum = ~pseudo;
-	NAPI_GRO_CB(skb)->csum_valid = 1;
-}
-
-#define skb_gro_checksum_try_convert(skb, proto, compute_pseudo)	\
-do {									\
-	if (__skb_gro_checksum_convert_check(skb))			\
-		__skb_gro_checksum_convert(skb, 			\
-					   compute_pseudo(skb, proto));	\
-} while (0)
-
-struct gro_remcsum {
-	int offset;
-	__wsum delta;
-};
-
-static inline void skb_gro_remcsum_init(struct gro_remcsum *grc)
-{
-	grc->offset = 0;
-	grc->delta = 0;
-}
-
-static inline void *skb_gro_remcsum_process(struct sk_buff *skb, void *ptr,
-					    unsigned int off, size_t hdrlen,
-					    int start, int offset,
-					    struct gro_remcsum *grc,
-					    bool nopartial)
-{
-	__wsum delta;
-	size_t plen = hdrlen + max_t(size_t, offset + sizeof(u16), start);
-
-	BUG_ON(!NAPI_GRO_CB(skb)->csum_valid);
-
-	if (!nopartial) {
-		NAPI_GRO_CB(skb)->gro_remcsum_start = off + hdrlen + start;
-		return ptr;
-	}
-
-	ptr = skb_gro_header_fast(skb, off);
-	if (skb_gro_header_hard(skb, off + plen)) {
-		ptr = skb_gro_header_slow(skb, off + plen, off);
-		if (!ptr)
-			return NULL;
-	}
-
-	delta = remcsum_adjust(ptr + hdrlen, NAPI_GRO_CB(skb)->csum,
-			       start, offset);
-
-	/* Adjust skb->csum since we changed the packet */
-	NAPI_GRO_CB(skb)->csum = csum_add(NAPI_GRO_CB(skb)->csum, delta);
-
-	grc->offset = off + hdrlen + offset;
-	grc->delta = delta;
-
-	return ptr;
-}
-
-static inline void skb_gro_remcsum_cleanup(struct sk_buff *skb,
-					   struct gro_remcsum *grc)
-{
-	void *ptr;
-	size_t plen = grc->offset + sizeof(u16);
-
-	if (!grc->delta)
-		return;
-
-	ptr = skb_gro_header_fast(skb, grc->offset);
-	if (skb_gro_header_hard(skb, grc->offset + sizeof(u16))) {
-		ptr = skb_gro_header_slow(skb, plen, grc->offset);
-		if (!ptr)
-			return;
-	}
-
-	remcsum_unadjust((__sum16 *)ptr, grc->delta);
-}
-
-#ifdef CONFIG_XFRM_OFFLOAD
-static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush)
-{
-	if (PTR_ERR(pp) != -EINPROGRESS)
-		NAPI_GRO_CB(skb)->flush |= flush;
-}
-static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb,
-					       struct sk_buff *pp,
-					       int flush,
-					       struct gro_remcsum *grc)
-{
-	if (PTR_ERR(pp) != -EINPROGRESS) {
-		NAPI_GRO_CB(skb)->flush |= flush;
-		skb_gro_remcsum_cleanup(skb, grc);
-		skb->remcsum_offload = 0;
-	}
-}
-#else
-static inline void skb_gro_flush_final(struct sk_buff *skb, struct sk_buff *pp, int flush)
-{
-	NAPI_GRO_CB(skb)->flush |= flush;
-}
-static inline void skb_gro_flush_final_remcsum(struct sk_buff *skb,
-					       struct sk_buff *pp,
-					       int flush,
-					       struct gro_remcsum *grc)
-{
-	NAPI_GRO_CB(skb)->flush |= flush;
-	skb_gro_remcsum_cleanup(skb, grc);
-	skb->remcsum_offload = 0;
-}
-#endif
 
 static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
 				  unsigned short type,
@@ -3947,7 +3666,6 @@ static inline unsigned int get_netdev_rx_queue_index(
 }
 #endif
 
-#define DEFAULT_MAX_NUM_RSS_QUEUES	(8)
 int netif_get_num_default_rss_queues(void);
 
 enum skb_free_reason {
@@ -4002,10 +3720,11 @@ u32 bpf_prog_run_generic_xdp(struct sk_buff *skb, struct xdp_buff *xdp,
 void generic_xdp_tx(struct sk_buff *skb, struct bpf_prog *xdp_prog);
 int do_xdp_generic(struct bpf_prog *xdp_prog, struct sk_buff *skb);
 int netif_rx(struct sk_buff *skb);
-int netif_rx_ni(struct sk_buff *skb);
-int netif_rx_any_context(struct sk_buff *skb);
+int __netif_rx(struct sk_buff *skb);
+
 int netif_receive_skb(struct sk_buff *skb);
 int netif_receive_skb_core(struct sk_buff *skb);
+void netif_receive_skb_list_internal(struct list_head *head);
 void netif_receive_skb_list(struct list_head *head);
 gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb);
 void napi_gro_flush(struct napi_struct *napi, bool flush_old);
@@ -4079,7 +3798,6 @@ int dev_get_port_parent_id(struct net_device *dev,
 			   struct netdev_phys_item_id *ppid, bool recurse);
 bool netdev_port_same_parent_id(struct net_device *a, struct net_device *b);
 int dev_change_proto_down(struct net_device *dev, bool proto_down);
-int dev_change_proto_down_generic(struct net_device *dev, bool proto_down);
 void dev_change_proto_down_reason(struct net_device *dev, unsigned long mask,
 				  u32 value);
 struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev, bool *again);
@@ -4125,13 +3843,39 @@ static __always_inline bool __is_skb_forwardable(const struct net_device *dev,
 	return false;
 }
 
+struct net_device_core_stats __percpu *netdev_core_stats_alloc(struct net_device *dev);
+
+static inline struct net_device_core_stats __percpu *dev_core_stats(struct net_device *dev)
+{
+	/* This READ_ONCE() pairs with the write in netdev_core_stats_alloc() */
+	struct net_device_core_stats __percpu *p = READ_ONCE(dev->core_stats);
+
+	if (likely(p))
+		return p;
+
+	return netdev_core_stats_alloc(dev);
+}
+
+#define DEV_CORE_STATS_INC(FIELD)						\
+static inline void dev_core_stats_##FIELD##_inc(struct net_device *dev)		\
+{										\
+	struct net_device_core_stats __percpu *p;				\
+										\
+	p = dev_core_stats(dev);						\
+	if (p)									\
+		this_cpu_inc(p->FIELD);						\
+}
+DEV_CORE_STATS_INC(rx_dropped)
+DEV_CORE_STATS_INC(tx_dropped)
+DEV_CORE_STATS_INC(rx_nohandler)
+
 static __always_inline int ____dev_forward_skb(struct net_device *dev,
 					       struct sk_buff *skb,
 					       const bool check_mtu)
 {
 	if (skb_orphan_frags(skb, GFP_ATOMIC) ||
 	    unlikely(!__is_skb_forwardable(dev, skb, check_mtu))) {
-		atomic_long_inc(&dev->rx_dropped);
+		dev_core_stats_rx_dropped_inc(dev);
 		kfree_skb(skb);
 		return NET_RX_DROP;
 	}
@@ -4150,13 +3894,7 @@ extern unsigned int	netdev_budget_usecs;
 /* Called by rtnetlink.c:rtnl_unlock() */
 void netdev_run_todo(void);
 
-/**
- *	dev_put - release reference to device
- *	@dev: network device
- *
- * Release reference to device to allow it to be freed.
- */
-static inline void dev_put(struct net_device *dev)
+static inline void __dev_put(struct net_device *dev)
 {
 	if (dev) {
 #ifdef CONFIG_PCPU_DEV_REFCNT
@@ -4167,13 +3905,7 @@ static inline void dev_put(struct net_device *dev)
 	}
 }
 
-/**
- *	dev_hold - get reference to device
- *	@dev: network device
- *
- * Hold reference to device to keep it from being freed.
- */
-static inline void dev_hold(struct net_device *dev)
+static inline void __dev_hold(struct net_device *dev)
 {
 	if (dev) {
 #ifdef CONFIG_PCPU_DEV_REFCNT
@@ -4184,6 +3916,92 @@ static inline void dev_hold(struct net_device *dev)
 	}
 }
 
+static inline void __netdev_tracker_alloc(struct net_device *dev,
+					  netdevice_tracker *tracker,
+					  gfp_t gfp)
+{
+#ifdef CONFIG_NET_DEV_REFCNT_TRACKER
+	ref_tracker_alloc(&dev->refcnt_tracker, tracker, gfp);
+#endif
+}
+
+/* netdev_tracker_alloc() can upgrade a prior untracked reference
+ * taken by dev_get_by_name()/dev_get_by_index() to a tracked one.
+ */
+static inline void netdev_tracker_alloc(struct net_device *dev,
+					netdevice_tracker *tracker, gfp_t gfp)
+{
+#ifdef CONFIG_NET_DEV_REFCNT_TRACKER
+	refcount_dec(&dev->refcnt_tracker.no_tracker);
+	__netdev_tracker_alloc(dev, tracker, gfp);
+#endif
+}
+
+static inline void netdev_tracker_free(struct net_device *dev,
+				       netdevice_tracker *tracker)
+{
+#ifdef CONFIG_NET_DEV_REFCNT_TRACKER
+	ref_tracker_free(&dev->refcnt_tracker, tracker);
+#endif
+}
+
+static inline void dev_hold_track(struct net_device *dev,
+				  netdevice_tracker *tracker, gfp_t gfp)
+{
+	if (dev) {
+		__dev_hold(dev);
+		__netdev_tracker_alloc(dev, tracker, gfp);
+	}
+}
+
+static inline void dev_put_track(struct net_device *dev,
+				 netdevice_tracker *tracker)
+{
+	if (dev) {
+		netdev_tracker_free(dev, tracker);
+		__dev_put(dev);
+	}
+}
+
+/**
+ *	dev_hold - get reference to device
+ *	@dev: network device
+ *
+ * Hold reference to device to keep it from being freed.
+ * Try using dev_hold_track() instead.
+ */
+static inline void dev_hold(struct net_device *dev)
+{
+	dev_hold_track(dev, NULL, GFP_ATOMIC);
+}
+
+/**
+ *	dev_put - release reference to device
+ *	@dev: network device
+ *
+ * Release reference to device to allow it to be freed.
+ * Try using dev_put_track() instead.
+ */
+static inline void dev_put(struct net_device *dev)
+{
+	dev_put_track(dev, NULL);
+}
+
+static inline void dev_replace_track(struct net_device *odev,
+				     struct net_device *ndev,
+				     netdevice_tracker *tracker,
+				     gfp_t gfp)
+{
+	if (odev)
+		netdev_tracker_free(odev, tracker);
+
+	__dev_hold(ndev);
+	__dev_put(odev);
+
+	if (ndev)
+		__netdev_tracker_alloc(ndev, tracker, gfp);
+}
+
 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
  * and _off may be called from IRQ context, but it is caller
  * who is responsible for serialization of these calls.
@@ -4403,7 +4221,8 @@ static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
 static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)
 {
 	spin_lock(&txq->_xmit_lock);
-	txq->xmit_lock_owner = cpu;
+	/* Pairs with READ_ONCE() in __dev_queue_xmit() */
+	WRITE_ONCE(txq->xmit_lock_owner, cpu);
 }
 
 static inline bool __netif_tx_acquire(struct netdev_queue *txq)
@@ -4420,33 +4239,50 @@ static inline void __netif_tx_release(struct netdev_queue *txq)
 static inline void __netif_tx_lock_bh(struct netdev_queue *txq)
 {
 	spin_lock_bh(&txq->_xmit_lock);
-	txq->xmit_lock_owner = smp_processor_id();
+	/* Pairs with READ_ONCE() in __dev_queue_xmit() */
+	WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id());
 }
 
 static inline bool __netif_tx_trylock(struct netdev_queue *txq)
 {
 	bool ok = spin_trylock(&txq->_xmit_lock);
-	if (likely(ok))
-		txq->xmit_lock_owner = smp_processor_id();
+
+	if (likely(ok)) {
+		/* Pairs with READ_ONCE() in __dev_queue_xmit() */
+		WRITE_ONCE(txq->xmit_lock_owner, smp_processor_id());
+	}
 	return ok;
 }
 
 static inline void __netif_tx_unlock(struct netdev_queue *txq)
 {
-	txq->xmit_lock_owner = -1;
+	/* Pairs with READ_ONCE() in __dev_queue_xmit() */
+	WRITE_ONCE(txq->xmit_lock_owner, -1);
 	spin_unlock(&txq->_xmit_lock);
 }
 
 static inline void __netif_tx_unlock_bh(struct netdev_queue *txq)
 {
-	txq->xmit_lock_owner = -1;
+	/* Pairs with READ_ONCE() in __dev_queue_xmit() */
+	WRITE_ONCE(txq->xmit_lock_owner, -1);
 	spin_unlock_bh(&txq->_xmit_lock);
 }
 
+/*
+ * txq->trans_start can be read locklessly from dev_watchdog()
+ */
 static inline void txq_trans_update(struct netdev_queue *txq)
 {
 	if (txq->xmit_lock_owner != -1)
-		txq->trans_start = jiffies;
+		WRITE_ONCE(txq->trans_start, jiffies);
+}
+
+static inline void txq_trans_cond_update(struct netdev_queue *txq)
+{
+	unsigned long now = jiffies;
+
+	if (READ_ONCE(txq->trans_start) != now)
+		WRITE_ONCE(txq->trans_start, now);
 }
 
 /* legacy drivers only, netdev_start_xmit() sets txq->trans_start */
@@ -4454,8 +4290,7 @@ static inline void netif_trans_update(struct net_device *dev)
 {
 	struct netdev_queue *txq = netdev_get_tx_queue(dev, 0);
 
-	if (txq->trans_start != jiffies)
-		txq->trans_start = jiffies;
+	txq_trans_cond_update(txq);
 }
 
 /**
@@ -4464,27 +4299,7 @@ static inline void netif_trans_update(struct net_device *dev)
  *
  * Get network device transmit lock
  */
-static inline void netif_tx_lock(struct net_device *dev)
-{
-	unsigned int i;
-	int cpu;
-
-	spin_lock(&dev->tx_global_lock);
-	cpu = smp_processor_id();
-	for (i = 0; i < dev->num_tx_queues; i++) {
-		struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
-
-		/* We are the only thread of execution doing a
-		 * freeze, but we have to grab the _xmit_lock in
-		 * order to synchronize with threads which are in
-		 * the ->hard_start_xmit() handler and already
-		 * checked the frozen bit.
-		 */
-		__netif_tx_lock(txq, cpu);
-		set_bit(__QUEUE_STATE_FROZEN, &txq->state);
-		__netif_tx_unlock(txq);
-	}
-}
+void netif_tx_lock(struct net_device *dev);
 
 static inline void netif_tx_lock_bh(struct net_device *dev)
 {
@@ -4492,22 +4307,7 @@ static inline void netif_tx_lock_bh(struct net_device *dev)
 	netif_tx_lock(dev);
 }
 
-static inline void netif_tx_unlock(struct net_device *dev)
-{
-	unsigned int i;
-
-	for (i = 0; i < dev->num_tx_queues; i++) {
-		struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
-
-		/* No need to grab the _xmit_lock here.  If the
-		 * queue is not stopped for another reason, we
-		 * force a schedule.
-		 */
-		clear_bit(__QUEUE_STATE_FROZEN, &txq->state);
-		netif_schedule_queue(txq);
-	}
-	spin_unlock(&dev->tx_global_lock);
-}
+void netif_tx_unlock(struct net_device *dev);
 
 static inline void netif_tx_unlock_bh(struct net_device *dev)
 {
@@ -4641,10 +4441,13 @@ void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list,
 void __hw_addr_init(struct netdev_hw_addr_list *list);
 
 /* Functions used for device addresses handling */
+void dev_addr_mod(struct net_device *dev, unsigned int offset,
+		  const void *addr, size_t len);
+
 static inline void
-__dev_addr_set(struct net_device *dev, const u8 *addr, size_t len)
+__dev_addr_set(struct net_device *dev, const void *addr, size_t len)
 {
-	memcpy(dev->dev_addr, addr, len);
+	dev_addr_mod(dev, 0, addr, len);
 }
 
 static inline void dev_addr_set(struct net_device *dev, const u8 *addr)
@@ -4652,19 +4455,13 @@ static inline void dev_addr_set(struct net_device *dev, const u8 *addr)
 	__dev_addr_set(dev, addr, dev->addr_len);
 }
 
-static inline void
-dev_addr_mod(struct net_device *dev, unsigned int offset,
-	     const u8 *addr, size_t len)
-{
-	memcpy(&dev->dev_addr[offset], addr, len);
-}
-
 int dev_addr_add(struct net_device *dev, const unsigned char *addr,
 		 unsigned char addr_type);
 int dev_addr_del(struct net_device *dev, const unsigned char *addr,
 		 unsigned char addr_type);
 void dev_addr_flush(struct net_device *dev);
 int dev_addr_init(struct net_device *dev);
+void dev_addr_check(struct net_device *dev);
 
 /* Functions used for unicast addresses handling */
 int dev_uc_add(struct net_device *dev, const unsigned char *addr);
@@ -4800,18 +4597,6 @@ struct netdev_nested_priv {
 bool netdev_has_upper_dev(struct net_device *dev, struct net_device *upper_dev);
 struct net_device *netdev_upper_get_next_dev_rcu(struct net_device *dev,
 						     struct list_head **iter);
-struct net_device *netdev_all_upper_get_next_dev_rcu(struct net_device *dev,
-						     struct list_head **iter);
-
-#ifdef CONFIG_LOCKDEP
-static LIST_HEAD(net_unlink_list);
-
-static inline void net_unlink_todo(struct net_device *dev)
-{
-	if (list_empty(&dev->unlink_list))
-		list_add_tail(&dev->unlink_list, &net_unlink_list);
-}
-#endif
 
 /* iterate through upper list, must be called under RCU read lock */
 #define netdev_for_each_upper_dev_rcu(dev, updev, iter) \
@@ -4907,6 +4692,8 @@ int skb_csum_hwoffload_help(struct sk_buff *skb,
 
 struct sk_buff *__skb_gso_segment(struct sk_buff *skb,
 				  netdev_features_t features, bool tx_path);
+struct sk_buff *skb_eth_gso_segment(struct sk_buff *skb,
+				    netdev_features_t features, __be16 type);
 struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
 				    netdev_features_t features);
 
@@ -5105,7 +4892,22 @@ static inline bool netif_needs_gso(struct sk_buff *skb,
 static inline void netif_set_gso_max_size(struct net_device *dev,
 					  unsigned int size)
 {
-	dev->gso_max_size = size;
+	/* dev->gso_max_size is read locklessly from sk_setup_caps() */
+	WRITE_ONCE(dev->gso_max_size, size);
+}
+
+static inline void netif_set_gso_max_segs(struct net_device *dev,
+					  unsigned int segs)
+{
+	/* dev->gso_max_segs is read locklessly from sk_setup_caps() */
+	WRITE_ONCE(dev->gso_max_segs, segs);
+}
+
+static inline void netif_set_gro_max_size(struct net_device *dev,
+					  unsigned int size)
+{
+	/* This pairs with the READ_ONCE() in skb_gro_receive() */
+	WRITE_ONCE(dev->gro_max_size, size);
 }
 
 static inline void skb_gso_error_unwind(struct sk_buff *skb, __be16 protocol,
@@ -5236,7 +5038,7 @@ static inline void netif_keep_dst(struct net_device *dev)
 static inline bool netif_reduces_vlan_mtu(struct net_device *dev)
 {
 	/* TODO: reserve and use an additional IFF bit, if we get more users */
-	return dev->priv_flags & IFF_MACSEC;
+	return netif_is_macsec(dev);
 }
 
 extern struct pernet_operations __net_initdata loopback_net_ops;
@@ -5292,7 +5094,7 @@ void netdev_info(const struct net_device *dev, const char *format, ...);
 
 #define netdev_level_once(level, dev, fmt, ...)			\
 do {								\
-	static bool __print_once __read_mostly;			\
+	static bool __section(".data.once") __print_once;	\
 								\
 	if (!__print_once) {					\
 		__print_once = true;				\
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 3fda1a508733..c2c6f332fb90 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -379,15 +379,16 @@ struct nf_nat_hook {
 	unsigned int (*manip_pkt)(struct sk_buff *skb, struct nf_conn *ct,
 				  enum nf_nat_manip_type mtype,
 				  enum ip_conntrack_dir dir);
+	void (*remove_nat_bysrc)(struct nf_conn *ct);
 };
 
-extern struct nf_nat_hook __rcu *nf_nat_hook;
+extern const struct nf_nat_hook __rcu *nf_nat_hook;
 
 static inline void
 nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family)
 {
 #if IS_ENABLED(CONFIG_NF_NAT)
-	struct nf_nat_hook *nat_hook;
+	const struct nf_nat_hook *nat_hook;
 
 	rcu_read_lock();
 	nat_hook = rcu_dereference(nf_nat_hook);
@@ -440,7 +441,6 @@ nf_nat_decode_session(struct sk_buff *skb, struct flowi *fl, u_int8_t family)
 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
 #include <linux/netfilter/nf_conntrack_zones_common.h>
 
-extern void (*ip_ct_attach)(struct sk_buff *, const struct sk_buff *) __rcu;
 void nf_ct_attach(struct sk_buff *, const struct sk_buff *);
 struct nf_conntrack_tuple;
 bool nf_ct_get_tuple_skb(struct nf_conntrack_tuple *dst_tuple,
@@ -463,8 +463,9 @@ struct nf_ct_hook {
 	void (*destroy)(struct nf_conntrack *);
 	bool (*get_tuple_skb)(struct nf_conntrack_tuple *,
 			      const struct sk_buff *);
+	void (*attach)(struct sk_buff *nskb, const struct sk_buff *skb);
 };
-extern struct nf_ct_hook __rcu *nf_ct_hook;
+extern const struct nf_ct_hook __rcu *nf_ct_hook;
 
 struct nlattr;
 
@@ -479,7 +480,7 @@ struct nfnl_ct_hook {
 	void (*seq_adjust)(struct sk_buff *skb, struct nf_conn *ct,
 			   enum ip_conntrack_info ctinfo, s32 off);
 };
-extern struct nfnl_ct_hook __rcu *nfnl_ct_hook;
+extern const struct nfnl_ct_hook __rcu *nfnl_ct_hook;
 
 /**
  * nf_skb_duplicated - TEE target has sent a packet
diff --git a/include/linux/netfilter/nf_conntrack_common.h b/include/linux/netfilter/nf_conntrack_common.h
index 700ea077ce2d..2770db2fa080 100644
--- a/include/linux/netfilter/nf_conntrack_common.h
+++ b/include/linux/netfilter/nf_conntrack_common.h
@@ -2,7 +2,7 @@
 #ifndef _NF_CONNTRACK_COMMON_H
 #define _NF_CONNTRACK_COMMON_H
 
-#include <linux/atomic.h>
+#include <linux/refcount.h>
 #include <uapi/linux/netfilter/nf_conntrack_common.h>
 
 struct ip_conntrack_stat {
@@ -25,19 +25,21 @@ struct ip_conntrack_stat {
 #define NFCT_PTRMASK	~(NFCT_INFOMASK)
 
 struct nf_conntrack {
-	atomic_t use;
+	refcount_t use;
 };
 
 void nf_conntrack_destroy(struct nf_conntrack *nfct);
+
+/* like nf_ct_put, but without module dependency on nf_conntrack */
 static inline void nf_conntrack_put(struct nf_conntrack *nfct)
 {
-	if (nfct && atomic_dec_and_test(&nfct->use))
+	if (nfct && refcount_dec_and_test(&nfct->use))
 		nf_conntrack_destroy(nfct);
 }
 static inline void nf_conntrack_get(struct nf_conntrack *nfct)
 {
 	if (nfct)
-		atomic_inc(&nfct->use);
+		refcount_inc(&nfct->use);
 }
 
 #endif /* _NF_CONNTRACK_COMMON_H */
diff --git a/include/linux/netfilter/nf_conntrack_pptp.h b/include/linux/netfilter/nf_conntrack_pptp.h
index a28aa289afdc..c3bdb4370938 100644
--- a/include/linux/netfilter/nf_conntrack_pptp.h
+++ b/include/linux/netfilter/nf_conntrack_pptp.h
@@ -300,26 +300,22 @@ union pptp_ctrl_union {
 	struct PptpSetLinkInfo		setlink;
 };
 
-extern int
-(*nf_nat_pptp_hook_outbound)(struct sk_buff *skb,
-			     struct nf_conn *ct, enum ip_conntrack_info ctinfo,
-			     unsigned int protoff,
-			     struct PptpControlHeader *ctlh,
-			     union pptp_ctrl_union *pptpReq);
-
-extern int
-(*nf_nat_pptp_hook_inbound)(struct sk_buff *skb,
-			    struct nf_conn *ct, enum ip_conntrack_info ctinfo,
-			    unsigned int protoff,
-			    struct PptpControlHeader *ctlh,
-			    union pptp_ctrl_union *pptpReq);
-
-extern void
-(*nf_nat_pptp_hook_exp_gre)(struct nf_conntrack_expect *exp_orig,
-			    struct nf_conntrack_expect *exp_reply);
-
-extern void
-(*nf_nat_pptp_hook_expectfn)(struct nf_conn *ct,
-			     struct nf_conntrack_expect *exp);
+struct nf_nat_pptp_hook {
+	int (*outbound)(struct sk_buff *skb,
+			struct nf_conn *ct, enum ip_conntrack_info ctinfo,
+			unsigned int protoff,
+			struct PptpControlHeader *ctlh,
+			union pptp_ctrl_union *pptpReq);
+	int (*inbound)(struct sk_buff *skb,
+		       struct nf_conn *ct, enum ip_conntrack_info ctinfo,
+		       unsigned int protoff,
+		       struct PptpControlHeader *ctlh,
+		       union pptp_ctrl_union *pptpReq);
+	void (*exp_gre)(struct nf_conntrack_expect *exp_orig,
+			struct nf_conntrack_expect *exp_reply);
+	void (*expectfn)(struct nf_conn *ct,
+			 struct nf_conntrack_expect *exp);
+};
 
+extern const struct nf_nat_pptp_hook __rcu *nf_nat_pptp_hook;
 #endif /* _NF_CONNTRACK_PPTP_H */
diff --git a/include/linux/netfilter_arp/arp_tables.h b/include/linux/netfilter_arp/arp_tables.h
index 4f9a4b3c5892..a40aaf645fa4 100644
--- a/include/linux/netfilter_arp/arp_tables.h
+++ b/include/linux/netfilter_arp/arp_tables.h
@@ -54,9 +54,8 @@ int arpt_register_table(struct net *net, const struct xt_table *table,
 			const struct nf_hook_ops *ops);
 void arpt_unregister_table(struct net *net, const char *name);
 void arpt_unregister_table_pre_exit(struct net *net, const char *name);
-extern unsigned int arpt_do_table(struct sk_buff *skb,
-				  const struct nf_hook_state *state,
-				  struct xt_table *table);
+extern unsigned int arpt_do_table(void *priv, struct sk_buff *skb,
+				  const struct nf_hook_state *state);
 
 #ifdef CONFIG_NETFILTER_XTABLES_COMPAT
 #include <net/compat.h>
diff --git a/include/linux/netfilter_bridge/ebtables.h b/include/linux/netfilter_bridge/ebtables.h
index 10a01978bc0d..a13296d6c7ce 100644
--- a/include/linux/netfilter_bridge/ebtables.h
+++ b/include/linux/netfilter_bridge/ebtables.h
@@ -112,9 +112,8 @@ extern int ebt_register_table(struct net *net,
 			      const struct nf_hook_ops *ops);
 extern void ebt_unregister_table(struct net *net, const char *tablename);
 void ebt_unregister_table_pre_exit(struct net *net, const char *tablename);
-extern unsigned int ebt_do_table(struct sk_buff *skb,
-				 const struct nf_hook_state *state,
-				 struct ebt_table *table);
+extern unsigned int ebt_do_table(void *priv, struct sk_buff *skb,
+				 const struct nf_hook_state *state);
 
 /* True if the hook mask denotes that the rule is in a base chain,
  * used in the check() functions */
diff --git a/include/linux/netfilter_ingress.h b/include/linux/netfilter_ingress.h
deleted file mode 100644
index a13774be2eb5..000000000000
--- a/include/linux/netfilter_ingress.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _NETFILTER_INGRESS_H_
-#define _NETFILTER_INGRESS_H_
-
-#include <linux/netfilter.h>
-#include <linux/netdevice.h>
-
-#ifdef CONFIG_NETFILTER_INGRESS
-static inline bool nf_hook_ingress_active(const struct sk_buff *skb)
-{
-#ifdef CONFIG_JUMP_LABEL
-	if (!static_key_false(&nf_hooks_needed[NFPROTO_NETDEV][NF_NETDEV_INGRESS]))
-		return false;
-#endif
-	return rcu_access_pointer(skb->dev->nf_hooks_ingress);
-}
-
-/* caller must hold rcu_read_lock */
-static inline int nf_hook_ingress(struct sk_buff *skb)
-{
-	struct nf_hook_entries *e = rcu_dereference(skb->dev->nf_hooks_ingress);
-	struct nf_hook_state state;
-	int ret;
-
-	/* Must recheck the ingress hook head, in the event it became NULL
-	 * after the check in nf_hook_ingress_active evaluated to true.
-	 */
-	if (unlikely(!e))
-		return 0;
-
-	nf_hook_state_init(&state, NF_NETDEV_INGRESS,
-			   NFPROTO_NETDEV, skb->dev, NULL, NULL,
-			   dev_net(skb->dev), NULL);
-	ret = nf_hook_slow(skb, &state, e, 0);
-	if (ret == 0)
-		return -1;
-
-	return ret;
-}
-
-static inline void nf_hook_ingress_init(struct net_device *dev)
-{
-	RCU_INIT_POINTER(dev->nf_hooks_ingress, NULL);
-}
-#else /* CONFIG_NETFILTER_INGRESS */
-static inline int nf_hook_ingress_active(struct sk_buff *skb)
-{
-	return 0;
-}
-
-static inline int nf_hook_ingress(struct sk_buff *skb)
-{
-	return 0;
-}
-
-static inline void nf_hook_ingress_init(struct net_device *dev) {}
-#endif /* CONFIG_NETFILTER_INGRESS */
-#endif /* _NETFILTER_INGRESS_H_ */
diff --git a/include/linux/netfilter_ipv4/ip_tables.h b/include/linux/netfilter_ipv4/ip_tables.h
index 8d09bfe850dc..132b0e4a6d4d 100644
--- a/include/linux/netfilter_ipv4/ip_tables.h
+++ b/include/linux/netfilter_ipv4/ip_tables.h
@@ -63,9 +63,9 @@ struct ipt_error {
 }
 
 extern void *ipt_alloc_initial_table(const struct xt_table *);
-extern unsigned int ipt_do_table(struct sk_buff *skb,
-				 const struct nf_hook_state *state,
-				 struct xt_table *table);
+extern unsigned int ipt_do_table(void *priv,
+				 struct sk_buff *skb,
+				 const struct nf_hook_state *state);
 
 #ifdef CONFIG_NETFILTER_XTABLES_COMPAT
 #include <net/compat.h>
diff --git a/include/linux/netfilter_ipv6/ip6_tables.h b/include/linux/netfilter_ipv6/ip6_tables.h
index 79e73fd7d965..8b8885a73c76 100644
--- a/include/linux/netfilter_ipv6/ip6_tables.h
+++ b/include/linux/netfilter_ipv6/ip6_tables.h
@@ -29,9 +29,8 @@ int ip6t_register_table(struct net *net, const struct xt_table *table,
 			const struct nf_hook_ops *ops);
 void ip6t_unregister_table_pre_exit(struct net *net, const char *name);
 void ip6t_unregister_table_exit(struct net *net, const char *name);
-extern unsigned int ip6t_do_table(struct sk_buff *skb,
-				  const struct nf_hook_state *state,
-				  struct xt_table *table);
+extern unsigned int ip6t_do_table(void *priv, struct sk_buff *skb,
+				  const struct nf_hook_state *state);
 
 #ifdef CONFIG_NETFILTER_XTABLES_COMPAT
 #include <net/compat.h>
diff --git a/include/linux/netfilter_netdev.h b/include/linux/netfilter_netdev.h
new file mode 100644
index 000000000000..8676316547cc
--- /dev/null
+++ b/include/linux/netfilter_netdev.h
@@ -0,0 +1,150 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _NETFILTER_NETDEV_H_
+#define _NETFILTER_NETDEV_H_
+
+#include <linux/netfilter.h>
+#include <linux/netdevice.h>
+
+#ifdef CONFIG_NETFILTER_INGRESS
+static inline bool nf_hook_ingress_active(const struct sk_buff *skb)
+{
+#ifdef CONFIG_JUMP_LABEL
+	if (!static_key_false(&nf_hooks_needed[NFPROTO_NETDEV][NF_NETDEV_INGRESS]))
+		return false;
+#endif
+	return rcu_access_pointer(skb->dev->nf_hooks_ingress);
+}
+
+/* caller must hold rcu_read_lock */
+static inline int nf_hook_ingress(struct sk_buff *skb)
+{
+	struct nf_hook_entries *e = rcu_dereference(skb->dev->nf_hooks_ingress);
+	struct nf_hook_state state;
+	int ret;
+
+	/* Must recheck the ingress hook head, in the event it became NULL
+	 * after the check in nf_hook_ingress_active evaluated to true.
+	 */
+	if (unlikely(!e))
+		return 0;
+
+	nf_hook_state_init(&state, NF_NETDEV_INGRESS,
+			   NFPROTO_NETDEV, skb->dev, NULL, NULL,
+			   dev_net(skb->dev), NULL);
+	ret = nf_hook_slow(skb, &state, e, 0);
+	if (ret == 0)
+		return -1;
+
+	return ret;
+}
+
+#else /* CONFIG_NETFILTER_INGRESS */
+static inline int nf_hook_ingress_active(struct sk_buff *skb)
+{
+	return 0;
+}
+
+static inline int nf_hook_ingress(struct sk_buff *skb)
+{
+	return 0;
+}
+#endif /* CONFIG_NETFILTER_INGRESS */
+
+#ifdef CONFIG_NETFILTER_EGRESS
+static inline bool nf_hook_egress_active(void)
+{
+#ifdef CONFIG_JUMP_LABEL
+	if (!static_key_false(&nf_hooks_needed[NFPROTO_NETDEV][NF_NETDEV_EGRESS]))
+		return false;
+#endif
+	return true;
+}
+
+/**
+ * nf_hook_egress - classify packets before transmission
+ * @skb: packet to be classified
+ * @rc: result code which shall be returned by __dev_queue_xmit() on failure
+ * @dev: netdev whose egress hooks shall be applied to @skb
+ *
+ * Returns @skb on success or %NULL if the packet was consumed or filtered.
+ * Caller must hold rcu_read_lock.
+ *
+ * On ingress, packets are classified first by tc, then by netfilter.
+ * On egress, the order is reversed for symmetry.  Conceptually, tc and
+ * netfilter can be thought of as layers, with netfilter layered above tc:
+ * When tc redirects a packet to another interface, netfilter is not applied
+ * because the packet is on the tc layer.
+ *
+ * The nf_skip_egress flag controls whether netfilter is applied on egress.
+ * It is updated by __netif_receive_skb_core() and __dev_queue_xmit() when the
+ * packet passes through tc and netfilter.  Because __dev_queue_xmit() may be
+ * called recursively by tunnel drivers such as vxlan, the flag is reverted to
+ * false after sch_handle_egress().  This ensures that netfilter is applied
+ * both on the overlay and underlying network.
+ */
+static inline struct sk_buff *nf_hook_egress(struct sk_buff *skb, int *rc,
+					     struct net_device *dev)
+{
+	struct nf_hook_entries *e;
+	struct nf_hook_state state;
+	int ret;
+
+#ifdef CONFIG_NETFILTER_SKIP_EGRESS
+	if (skb->nf_skip_egress)
+		return skb;
+#endif
+
+	e = rcu_dereference_check(dev->nf_hooks_egress, rcu_read_lock_bh_held());
+	if (!e)
+		return skb;
+
+	nf_hook_state_init(&state, NF_NETDEV_EGRESS,
+			   NFPROTO_NETDEV, NULL, dev, NULL,
+			   dev_net(dev), NULL);
+
+	/* nf assumes rcu_read_lock, not just read_lock_bh */
+	rcu_read_lock();
+	ret = nf_hook_slow(skb, &state, e, 0);
+	rcu_read_unlock();
+
+	if (ret == 1) {
+		return skb;
+	} else if (ret < 0) {
+		*rc = NET_XMIT_DROP;
+		return NULL;
+	} else { /* ret == 0 */
+		*rc = NET_XMIT_SUCCESS;
+		return NULL;
+	}
+}
+#else /* CONFIG_NETFILTER_EGRESS */
+static inline bool nf_hook_egress_active(void)
+{
+	return false;
+}
+
+static inline struct sk_buff *nf_hook_egress(struct sk_buff *skb, int *rc,
+					     struct net_device *dev)
+{
+	return skb;
+}
+#endif /* CONFIG_NETFILTER_EGRESS */
+
+static inline void nf_skip_egress(struct sk_buff *skb, bool skip)
+{
+#ifdef CONFIG_NETFILTER_SKIP_EGRESS
+	skb->nf_skip_egress = skip;
+#endif
+}
+
+static inline void nf_hook_netdev_init(struct net_device *dev)
+{
+#ifdef CONFIG_NETFILTER_INGRESS
+	RCU_INIT_POINTER(dev->nf_hooks_ingress, NULL);
+#endif
+#ifdef CONFIG_NETFILTER_EGRESS
+	RCU_INIT_POINTER(dev->nf_hooks_egress, NULL);
+#endif
+}
+
+#endif /* _NETFILTER_NETDEV_H_ */
diff --git a/include/linux/netfs.h b/include/linux/netfs.h
index 5d6a4158a9a6..c7bf1eaf51d5 100644
--- a/include/linux/netfs.h
+++ b/include/linux/netfs.h
@@ -18,10 +18,13 @@
 #include <linux/fs.h>
 #include <linux/pagemap.h>
 
+enum netfs_sreq_ref_trace;
+
 /*
  * Overload PG_private_2 to give us PG_fscache - this is used to indicate that
  * a page is currently backed by a local disk cache
  */
+#define folio_test_fscache(folio)	folio_test_private_2(folio)
 #define PageFsCache(page)		PagePrivate2((page))
 #define SetPageFsCache(page)		SetPagePrivate2((page))
 #define ClearPageFsCache(page)		ClearPagePrivate2((page))
@@ -29,63 +32,83 @@
 #define TestClearPageFsCache(page)	TestClearPagePrivate2((page))
 
 /**
- * set_page_fscache - Set PG_fscache on a page and take a ref
- * @page: The page.
+ * folio_start_fscache - Start an fscache write on a folio.
+ * @folio: The folio.
  *
- * Set the PG_fscache (PG_private_2) flag on a page and take the reference
- * needed for the VM to handle its lifetime correctly.  This sets the flag and
- * takes the reference unconditionally, so care must be taken not to set the
- * flag again if it's already set.
+ * Call this function before writing a folio to a local cache.  Starting a
+ * second write before the first one finishes is not allowed.
  */
-static inline void set_page_fscache(struct page *page)
+static inline void folio_start_fscache(struct folio *folio)
 {
-	set_page_private_2(page);
+	VM_BUG_ON_FOLIO(folio_test_private_2(folio), folio);
+	folio_get(folio);
+	folio_set_private_2(folio);
 }
 
 /**
- * end_page_fscache - Clear PG_fscache and release any waiters
- * @page: The page
+ * folio_end_fscache - End an fscache write on a folio.
+ * @folio: The folio.
  *
- * Clear the PG_fscache (PG_private_2) bit on a page and wake up any sleepers
- * waiting for this.  The page ref held for PG_private_2 being set is released.
- *
- * This is, for example, used when a netfs page is being written to a local
- * disk cache, thereby allowing writes to the cache for the same page to be
- * serialised.
+ * Call this function after the folio has been written to the local cache.
+ * This will wake any sleepers waiting on this folio.
  */
-static inline void end_page_fscache(struct page *page)
+static inline void folio_end_fscache(struct folio *folio)
 {
-	end_page_private_2(page);
+	folio_end_private_2(folio);
 }
 
 /**
- * wait_on_page_fscache - Wait for PG_fscache to be cleared on a page
- * @page: The page to wait on
+ * folio_wait_fscache - Wait for an fscache write on this folio to end.
+ * @folio: The folio.
  *
- * Wait for PG_fscache (aka PG_private_2) to be cleared on a page.
+ * If this folio is currently being written to a local cache, wait for
+ * the write to finish.  Another write may start after this one finishes,
+ * unless the caller holds the folio lock.
  */
-static inline void wait_on_page_fscache(struct page *page)
+static inline void folio_wait_fscache(struct folio *folio)
 {
-	wait_on_page_private_2(page);
+	folio_wait_private_2(folio);
 }
 
 /**
- * wait_on_page_fscache_killable - Wait for PG_fscache to be cleared on a page
- * @page: The page to wait on
+ * folio_wait_fscache_killable - Wait for an fscache write on this folio to end.
+ * @folio: The folio.
  *
- * Wait for PG_fscache (aka PG_private_2) to be cleared on a page or until a
- * fatal signal is received by the calling task.
+ * If this folio is currently being written to a local cache, wait
+ * for the write to finish or for a fatal signal to be received.
+ * Another write may start after this one finishes, unless the caller
+ * holds the folio lock.
  *
  * Return:
  * - 0 if successful.
  * - -EINTR if a fatal signal was encountered.
  */
+static inline int folio_wait_fscache_killable(struct folio *folio)
+{
+	return folio_wait_private_2_killable(folio);
+}
+
+static inline void set_page_fscache(struct page *page)
+{
+	folio_start_fscache(page_folio(page));
+}
+
+static inline void end_page_fscache(struct page *page)
+{
+	folio_end_private_2(page_folio(page));
+}
+
+static inline void wait_on_page_fscache(struct page *page)
+{
+	folio_wait_private_2(page_folio(page));
+}
+
 static inline int wait_on_page_fscache_killable(struct page *page)
 {
-	return wait_on_page_private_2_killable(page);
+	return folio_wait_private_2_killable(page_folio(page));
 }
 
-enum netfs_read_source {
+enum netfs_io_source {
 	NETFS_FILL_WITH_ZEROES,
 	NETFS_DOWNLOAD_FROM_SERVER,
 	NETFS_READ_FROM_CACHE,
@@ -96,6 +119,17 @@ typedef void (*netfs_io_terminated_t)(void *priv, ssize_t transferred_or_error,
 				      bool was_async);
 
 /*
+ * Per-inode description.  This must be directly after the inode struct.
+ */
+struct netfs_i_context {
+	const struct netfs_request_ops *ops;
+#if IS_ENABLED(CONFIG_FSCACHE)
+	struct fscache_cookie	*cache;
+#endif
+	loff_t			remote_i_size;	/* Size of the remote file */
+};
+
+/*
  * Resources required to do operations on a cache.
  */
 struct netfs_cache_resources {
@@ -103,78 +137,94 @@ struct netfs_cache_resources {
 	void				*cache_priv;
 	void				*cache_priv2;
 	unsigned int			debug_id;	/* Cookie debug ID */
+	unsigned int			inval_counter;	/* object->inval_counter at begin_op */
 };
 
 /*
  * Descriptor for a single component subrequest.
  */
-struct netfs_read_subrequest {
-	struct netfs_read_request *rreq;	/* Supervising read request */
+struct netfs_io_subrequest {
+	struct netfs_io_request *rreq;		/* Supervising I/O request */
 	struct list_head	rreq_link;	/* Link in rreq->subrequests */
 	loff_t			start;		/* Where to start the I/O */
 	size_t			len;		/* Size of the I/O */
 	size_t			transferred;	/* Amount of data transferred */
-	refcount_t		usage;
+	refcount_t		ref;
 	short			error;		/* 0 or error that occurred */
 	unsigned short		debug_index;	/* Index in list (for debugging output) */
-	enum netfs_read_source	source;		/* Where to read from */
+	enum netfs_io_source	source;		/* Where to read from/write to */
 	unsigned long		flags;
-#define NETFS_SREQ_WRITE_TO_CACHE	0	/* Set if should write to cache */
+#define NETFS_SREQ_COPY_TO_CACHE	0	/* Set if should copy the data to the cache */
 #define NETFS_SREQ_CLEAR_TAIL		1	/* Set if the rest of the read should be cleared */
-#define NETFS_SREQ_SHORT_READ		2	/* Set if there was a short read from the cache */
+#define NETFS_SREQ_SHORT_IO		2	/* Set if the I/O was short */
 #define NETFS_SREQ_SEEK_DATA_READ	3	/* Set if ->read() should SEEK_DATA first */
 #define NETFS_SREQ_NO_PROGRESS		4	/* Set if we didn't manage to read any data */
 };
 
+enum netfs_io_origin {
+	NETFS_READAHEAD,		/* This read was triggered by readahead */
+	NETFS_READPAGE,			/* This read is a synchronous read */
+	NETFS_READ_FOR_WRITE,		/* This read is to prepare a write */
+} __mode(byte);
+
 /*
- * Descriptor for a read helper request.  This is used to make multiple I/O
- * requests on a variety of sources and then stitch the result together.
+ * Descriptor for an I/O helper request.  This is used to make multiple I/O
+ * operations to a variety of data stores and then stitch the result together.
  */
-struct netfs_read_request {
+struct netfs_io_request {
 	struct work_struct	work;
 	struct inode		*inode;		/* The file being accessed */
 	struct address_space	*mapping;	/* The mapping being accessed */
 	struct netfs_cache_resources cache_resources;
-	struct list_head	subrequests;	/* Requests to fetch I/O from disk or net */
+	struct list_head	subrequests;	/* Contributory I/O operations */
 	void			*netfs_priv;	/* Private data for the netfs */
 	unsigned int		debug_id;
-	atomic_t		nr_rd_ops;	/* Number of read ops in progress */
-	atomic_t		nr_wr_ops;	/* Number of write ops in progress */
+	atomic_t		nr_outstanding;	/* Number of ops in progress */
+	atomic_t		nr_copy_ops;	/* Number of copy-to-cache ops in progress */
 	size_t			submitted;	/* Amount submitted for I/O so far */
 	size_t			len;		/* Length of the request */
 	short			error;		/* 0 or error that occurred */
+	enum netfs_io_origin	origin;		/* Origin of the request */
 	loff_t			i_size;		/* Size of the file */
 	loff_t			start;		/* Start position */
-	pgoff_t			no_unlock_page;	/* Don't unlock this page after read */
-	refcount_t		usage;
+	pgoff_t			no_unlock_folio; /* Don't unlock this folio after read */
+	refcount_t		ref;
 	unsigned long		flags;
 #define NETFS_RREQ_INCOMPLETE_IO	0	/* Some ioreqs terminated short or with error */
-#define NETFS_RREQ_WRITE_TO_CACHE	1	/* Need to write to the cache */
-#define NETFS_RREQ_NO_UNLOCK_PAGE	2	/* Don't unlock no_unlock_page on completion */
-#define NETFS_RREQ_DONT_UNLOCK_PAGES	3	/* Don't unlock the pages on completion */
+#define NETFS_RREQ_COPY_TO_CACHE	1	/* Need to write to the cache */
+#define NETFS_RREQ_NO_UNLOCK_FOLIO	2	/* Don't unlock no_unlock_folio on completion */
+#define NETFS_RREQ_DONT_UNLOCK_FOLIOS	3	/* Don't unlock the folios on completion */
 #define NETFS_RREQ_FAILED		4	/* The request failed */
 #define NETFS_RREQ_IN_PROGRESS		5	/* Unlocked when the request completes */
-	const struct netfs_read_request_ops *netfs_ops;
+	const struct netfs_request_ops *netfs_ops;
 };
 
 /*
  * Operations the network filesystem can/must provide to the helpers.
  */
-struct netfs_read_request_ops {
-	bool (*is_cache_enabled)(struct inode *inode);
-	void (*init_rreq)(struct netfs_read_request *rreq, struct file *file);
-	int (*begin_cache_operation)(struct netfs_read_request *rreq);
-	void (*expand_readahead)(struct netfs_read_request *rreq);
-	bool (*clamp_length)(struct netfs_read_subrequest *subreq);
-	void (*issue_op)(struct netfs_read_subrequest *subreq);
-	bool (*is_still_valid)(struct netfs_read_request *rreq);
+struct netfs_request_ops {
+	int (*init_request)(struct netfs_io_request *rreq, struct file *file);
+	int (*begin_cache_operation)(struct netfs_io_request *rreq);
+	void (*expand_readahead)(struct netfs_io_request *rreq);
+	bool (*clamp_length)(struct netfs_io_subrequest *subreq);
+	void (*issue_read)(struct netfs_io_subrequest *subreq);
+	bool (*is_still_valid)(struct netfs_io_request *rreq);
 	int (*check_write_begin)(struct file *file, loff_t pos, unsigned len,
-				 struct page *page, void **_fsdata);
-	void (*done)(struct netfs_read_request *rreq);
+				 struct folio *folio, void **_fsdata);
+	void (*done)(struct netfs_io_request *rreq);
 	void (*cleanup)(struct address_space *mapping, void *netfs_priv);
 };
 
 /*
+ * How to handle reading from a hole.
+ */
+enum netfs_read_from_hole {
+	NETFS_READ_HOLE_IGNORE,
+	NETFS_READ_HOLE_CLEAR,
+	NETFS_READ_HOLE_FAIL,
+};
+
+/*
  * Table of operations for access to a cache.  This is obtained by
  * rreq->ops->begin_cache_operation().
  */
@@ -186,7 +236,7 @@ struct netfs_cache_ops {
 	int (*read)(struct netfs_cache_resources *cres,
 		    loff_t start_pos,
 		    struct iov_iter *iter,
-		    bool seek_data,
+		    enum netfs_read_from_hole read_hole,
 		    netfs_io_terminated_t term_func,
 		    void *term_func_priv);
 
@@ -204,31 +254,108 @@ struct netfs_cache_ops {
 	/* Prepare a read operation, shortening it to a cached/uncached
 	 * boundary as appropriate.
 	 */
-	enum netfs_read_source (*prepare_read)(struct netfs_read_subrequest *subreq,
+	enum netfs_io_source (*prepare_read)(struct netfs_io_subrequest *subreq,
 					       loff_t i_size);
 
 	/* Prepare a write operation, working out what part of the write we can
 	 * actually do.
 	 */
 	int (*prepare_write)(struct netfs_cache_resources *cres,
-			     loff_t *_start, size_t *_len, loff_t i_size);
+			     loff_t *_start, size_t *_len, loff_t i_size,
+			     bool no_space_allocated_yet);
+
+	/* Query the occupancy of the cache in a region, returning where the
+	 * next chunk of data starts and how long it is.
+	 */
+	int (*query_occupancy)(struct netfs_cache_resources *cres,
+			       loff_t start, size_t len, size_t granularity,
+			       loff_t *_data_start, size_t *_data_len);
 };
 
 struct readahead_control;
-extern void netfs_readahead(struct readahead_control *,
-			    const struct netfs_read_request_ops *,
-			    void *);
-extern int netfs_readpage(struct file *,
-			  struct page *,
-			  const struct netfs_read_request_ops *,
-			  void *);
+extern void netfs_readahead(struct readahead_control *);
+extern int netfs_readpage(struct file *, struct page *);
 extern int netfs_write_begin(struct file *, struct address_space *,
-			     loff_t, unsigned int, unsigned int, struct page **,
-			     void **,
-			     const struct netfs_read_request_ops *,
-			     void *);
+			     loff_t, unsigned int, unsigned int, struct folio **,
+			     void **);
 
-extern void netfs_subreq_terminated(struct netfs_read_subrequest *, ssize_t, bool);
+extern void netfs_subreq_terminated(struct netfs_io_subrequest *, ssize_t, bool);
+extern void netfs_get_subrequest(struct netfs_io_subrequest *subreq,
+				 enum netfs_sreq_ref_trace what);
+extern void netfs_put_subrequest(struct netfs_io_subrequest *subreq,
+				 bool was_async, enum netfs_sreq_ref_trace what);
 extern void netfs_stats_show(struct seq_file *);
 
+/**
+ * netfs_i_context - Get the netfs inode context from the inode
+ * @inode: The inode to query
+ *
+ * Get the netfs lib inode context from the network filesystem's inode.  The
+ * context struct is expected to directly follow on from the VFS inode struct.
+ */
+static inline struct netfs_i_context *netfs_i_context(struct inode *inode)
+{
+	return (struct netfs_i_context *)(inode + 1);
+}
+
+/**
+ * netfs_inode - Get the netfs inode from the inode context
+ * @ctx: The context to query
+ *
+ * Get the netfs inode from the netfs library's inode context.  The VFS inode
+ * is expected to directly precede the context struct.
+ */
+static inline struct inode *netfs_inode(struct netfs_i_context *ctx)
+{
+	return ((struct inode *)ctx) - 1;
+}
+
+/**
+ * netfs_i_context_init - Initialise a netfs lib context
+ * @inode: The inode with which the context is associated
+ * @ops: The netfs's operations list
+ *
+ * Initialise the netfs library context struct.  This is expected to follow on
+ * directly from the VFS inode struct.
+ */
+static inline void netfs_i_context_init(struct inode *inode,
+					const struct netfs_request_ops *ops)
+{
+	struct netfs_i_context *ctx = netfs_i_context(inode);
+
+	memset(ctx, 0, sizeof(*ctx));
+	ctx->ops = ops;
+	ctx->remote_i_size = i_size_read(inode);
+}
+
+/**
+ * netfs_resize_file - Note that a file got resized
+ * @inode: The inode being resized
+ * @new_i_size: The new file size
+ *
+ * Inform the netfs lib that a file got resized so that it can adjust its state.
+ */
+static inline void netfs_resize_file(struct inode *inode, loff_t new_i_size)
+{
+	struct netfs_i_context *ctx = netfs_i_context(inode);
+
+	ctx->remote_i_size = new_i_size;
+}
+
+/**
+ * netfs_i_cookie - Get the cache cookie from the inode
+ * @inode: The inode to query
+ *
+ * Get the caching cookie (if enabled) from the network filesystem's inode.
+ */
+static inline struct fscache_cookie *netfs_i_cookie(struct inode *inode)
+{
+#if IS_ENABLED(CONFIG_FSCACHE)
+	struct netfs_i_context *ctx = netfs_i_context(inode);
+	return ctx->cache;
+#else
+	return NULL;
+#endif
+}
+
 #endif /* _LINUX_NETFS_H */
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 61b1c7fcc401..bda1c385cffb 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -135,15 +135,6 @@ static inline void nl_set_extack_cookie_u64(struct netlink_ext_ack *extack,
 	extack->cookie_len = sizeof(cookie);
 }
 
-static inline void nl_set_extack_cookie_u32(struct netlink_ext_ack *extack,
-					    u32 cookie)
-{
-	if (!extack)
-		return;
-	memcpy(extack->cookie, &cookie, sizeof(cookie));
-	extack->cookie_len = sizeof(cookie);
-}
-
 void netlink_kernel_release(struct sock *sk);
 int __netlink_change_ngroups(struct sock *sk, unsigned int groups);
 int netlink_change_ngroups(struct sock *sk, unsigned int groups);
@@ -156,10 +147,6 @@ bool netlink_strict_get_check(struct sk_buff *skb);
 int netlink_unicast(struct sock *ssk, struct sk_buff *skb, __u32 portid, int nonblock);
 int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, __u32 portid,
 		      __u32 group, gfp_t allocation);
-int netlink_broadcast_filtered(struct sock *ssk, struct sk_buff *skb,
-			       __u32 portid, __u32 group, gfp_t allocation,
-			       int (*filter)(struct sock *dsk, struct sk_buff *skb, void *data),
-			       void *filter_data);
 int netlink_set_err(struct sock *ssk, __u32 portid, __u32 group, int code);
 int netlink_register_notifier(struct notifier_block *nb);
 int netlink_unregister_notifier(struct notifier_block *nb);
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index e6a2d72e0dc7..bd19c4b91e31 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -24,6 +24,7 @@ union inet_addr {
 
 struct netpoll {
 	struct net_device *dev;
+	netdevice_tracker dev_tracker;
 	char dev_name[IFNAMSIZ];
 	const char *name;
 
diff --git a/include/linux/nfs.h b/include/linux/nfs.h
index 0dc7ad38a0da..b06375e88e58 100644
--- a/include/linux/nfs.h
+++ b/include/linux/nfs.h
@@ -36,14 +36,6 @@ static inline void nfs_copy_fh(struct nfs_fh *target, const struct nfs_fh *sourc
 	memcpy(target->data, source->data, source->size);
 }
 
-
-/*
- * This is really a general kernel constant, but since nothing like
- * this is defined in the kernel headers, I have to do it here.
- */
-#define NFS_OFFSET_MAX		((__s64)((~(__u64)0) >> 1))
-
-
 enum nfs3_stable_how {
 	NFS_UNSTABLE = 0,
 	NFS_DATA_SYNC = 1,
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 15004c469807..5662d8be04eb 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -292,6 +292,10 @@ enum nfsstat4 {
 	NFS4ERR_XATTR2BIG      = 10096,
 };
 
+/* error codes for internal client use */
+#define NFS4ERR_RESET_TO_MDS   12001
+#define NFS4ERR_RESET_TO_PNFS  12002
+
 static inline bool seqid_mutating_err(u32 err)
 {
 	/* See RFC 7530, section 9.1.7 */
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index b9a8b925db43..b48b9259e02c 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -46,11 +46,6 @@
 #define NFS_MAX_TRANSPORTS 16
 
 /*
- * These are the default flags for swap requests
- */
-#define NFS_RPC_SWAPFLAGS		(RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS)
-
-/*
  * Size of the NFS directory verifier
  */
 #define NFS_DIR_VERIFIER_SIZE		2
@@ -61,7 +56,9 @@
 struct nfs_access_entry {
 	struct rb_node		rb_node;
 	struct list_head	lru;
-	const struct cred *	cred;
+	kuid_t			fsuid;
+	kgid_t			fsgid;
+	struct group_info	*group_info;
 	__u32			mask;
 	struct rcu_head		rcu_head;
 };
@@ -81,7 +78,7 @@ struct nfs_open_context {
 	fl_owner_t flock_owner;
 	struct dentry *dentry;
 	const struct cred *cred;
-	struct rpc_cred *ll_cred;	/* low-level cred - use to check for expiry */
+	struct rpc_cred __rcu *ll_cred;	/* low-level cred - use to check for expiry */
 	struct nfs4_state *state;
 	fmode_t mode;
 
@@ -99,11 +96,17 @@ struct nfs_open_context {
 
 struct nfs_open_dir_context {
 	struct list_head list;
+	atomic_t cache_hits;
+	atomic_t cache_misses;
 	unsigned long attr_gencount;
 	__be32	verf[NFS_DIR_VERIFIER_SIZE];
 	__u64 dir_cookie;
-	__u64 dup_cookie;
-	signed char duped;
+	__u64 last_cookie;
+	pgoff_t page_index;
+	unsigned int dtsize;
+	bool force_clear;
+	bool eof;
+	struct rcu_head rcu_head;
 };
 
 /*
@@ -154,36 +157,39 @@ struct nfs_inode {
 	unsigned long		attrtimeo_timestamp;
 
 	unsigned long		attr_gencount;
-	/* "Generation counter" for the attribute cache. This is
-	 * bumped whenever we update the metadata on the
-	 * server.
-	 */
-	unsigned long		cache_change_attribute;
 
 	struct rb_root		access_cache;
 	struct list_head	access_cache_entry_lru;
 	struct list_head	access_cache_inode_lru;
 
-	/*
-	 * This is the cookie verifier used for NFSv3 readdir
-	 * operations
-	 */
-	__be32			cookieverf[NFS_DIR_VERIFIER_SIZE];
-
-	atomic_long_t		nrequests;
-	struct nfs_mds_commit_info commit_info;
+	union {
+		/* Directory */
+		struct {
+			/* "Generation counter" for the attribute cache.
+			 * This is bumped whenever we update the metadata
+			 * on the server.
+			 */
+			unsigned long	cache_change_attribute;
+			/*
+			 * This is the cookie verifier used for NFSv3 readdir
+			 * operations
+			 */
+			__be32		cookieverf[NFS_DIR_VERIFIER_SIZE];
+			/* Readers: in-flight sillydelete RPC calls */
+			/* Writers: rmdir */
+			struct rw_semaphore	rmdir_sem;
+		};
+		/* Regular file */
+		struct {
+			atomic_long_t	nrequests;
+			struct nfs_mds_commit_info commit_info;
+			struct mutex	commit_mutex;
+		};
+	};
 
 	/* Open contexts for shared mmap writes */
 	struct list_head	open_files;
 
-	/* Readers: in-flight sillydelete RPC calls */
-	/* Writers: rmdir */
-	struct rw_semaphore	rmdir_sem;
-	struct mutex		commit_mutex;
-
-	/* track last access to cached pages */
-	unsigned long		page_index;
-
 #if IS_ENABLED(CONFIG_NFS_V4)
 	struct nfs4_cached_acl	*nfs4_acl;
         /* NFSv4 state */
@@ -240,7 +246,6 @@ struct nfs4_copy_state {
 #define NFS_INO_INVALID_ATIME	BIT(2)		/* cached atime is invalid */
 #define NFS_INO_INVALID_ACCESS	BIT(3)		/* cached access cred invalid */
 #define NFS_INO_INVALID_ACL	BIT(4)		/* cached acls are invalid */
-#define NFS_INO_REVAL_PAGECACHE	BIT(5)		/* must revalidate pagecache */
 #define NFS_INO_REVAL_FORCED	BIT(6)		/* force revalidation ignoring a delegation */
 #define NFS_INO_INVALID_LABEL	BIT(7)		/* cached label is invalid */
 #define NFS_INO_INVALID_CHANGE	BIT(8)		/* cached change is invalid */
@@ -266,12 +271,11 @@ struct nfs4_copy_state {
 /*
  * Bit offsets in flags field
  */
-#define NFS_INO_ADVISE_RDPLUS	(0)		/* advise readdirplus */
 #define NFS_INO_STALE		(1)		/* possible stale inode */
 #define NFS_INO_ACL_LRU_SET	(2)		/* Inode is on the LRU list */
 #define NFS_INO_INVALIDATING	(3)		/* inode is being invalidated */
+#define NFS_INO_PRESERVE_UNLINKED (4)		/* preserve file if removed while open */
 #define NFS_INO_FSCACHE		(5)		/* inode can be cached by FS-Cache */
-#define NFS_INO_FSCACHE_LOCK	(6)		/* FS-Cache cookie management lock */
 #define NFS_INO_LAYOUTCOMMIT	(9)		/* layoutcommit required */
 #define NFS_INO_LAYOUTCOMMITTING (10)		/* layoutcommit inflight */
 #define NFS_INO_LAYOUTSTATS	(11)		/* layoutstats inflight */
@@ -348,17 +352,15 @@ static inline void nfs_mark_for_revalidate(struct inode *inode)
 	struct nfs_inode *nfsi = NFS_I(inode);
 
 	spin_lock(&inode->i_lock);
-	nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE
-		| NFS_INO_INVALID_ACCESS
-		| NFS_INO_INVALID_ACL
-		| NFS_INO_INVALID_CHANGE
-		| NFS_INO_INVALID_CTIME;
+	nfsi->cache_validity |= NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL |
+				NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_CTIME |
+				NFS_INO_INVALID_SIZE;
 	if (S_ISDIR(inode->i_mode))
 		nfsi->cache_validity |= NFS_INO_INVALID_DATA;
 	spin_unlock(&inode->i_lock);
 }
 
-static inline int nfs_server_capable(struct inode *inode, int cap)
+static inline int nfs_server_capable(const struct inode *inode, int cap)
 {
 	return NFS_SERVER(inode)->caps & cap;
 }
@@ -383,7 +385,7 @@ extern void nfs_zap_caches(struct inode *);
 extern void nfs_set_inode_stale(struct inode *inode);
 extern void nfs_invalidate_atime(struct inode *);
 extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *,
-				struct nfs_fattr *, struct nfs4_label *);
+				struct nfs_fattr *);
 struct inode *nfs_ilookup(struct super_block *sb, struct nfs_fattr *, struct nfs_fh *);
 extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *);
 extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr);
@@ -391,7 +393,7 @@ extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fa
 extern int nfs_post_op_update_inode_force_wcc_locked(struct inode *inode, struct nfs_fattr *fattr);
 extern int nfs_getattr(struct user_namespace *, const struct path *,
 		       struct kstat *, u32, unsigned int);
-extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *);
+extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *, const struct cred *);
 extern void nfs_access_set_mask(struct nfs_access_entry *, u32);
 extern int nfs_permission(struct user_namespace *, struct inode *, int);
 extern int nfs_open(struct inode *, struct file *);
@@ -404,8 +406,7 @@ extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *map
 extern int nfs_revalidate_mapping_rcu(struct inode *inode);
 extern int nfs_setattr(struct user_namespace *, struct dentry *, struct iattr *);
 extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, struct nfs_fattr *);
-extern void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr,
-				struct nfs4_label *label);
+extern void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr);
 extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx);
 extern void put_nfs_open_context(struct nfs_open_context *ctx);
 extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, const struct cred *cred, fmode_t mode);
@@ -421,9 +422,22 @@ extern void nfs_fattr_set_barrier(struct nfs_fattr *fattr);
 extern unsigned long nfs_inc_attr_generation_counter(void);
 
 extern struct nfs_fattr *nfs_alloc_fattr(void);
+extern struct nfs_fattr *nfs_alloc_fattr_with_label(struct nfs_server *server);
+
+static inline void nfs4_label_free(struct nfs4_label *label)
+{
+#ifdef CONFIG_NFS_V4_SECURITY_LABEL
+	if (label) {
+		kfree(label->label);
+		kfree(label);
+	}
+#endif
+}
 
 static inline void nfs_free_fattr(const struct nfs_fattr *fattr)
 {
+	if (fattr)
+		nfs4_label_free(fattr->label);
 	kfree(fattr);
 }
 
@@ -494,10 +508,10 @@ static inline const struct cred *nfs_file_cred(struct file *file)
  * linux/fs/nfs/direct.c
  */
 extern ssize_t nfs_direct_IO(struct kiocb *, struct iov_iter *);
-extern ssize_t nfs_file_direct_read(struct kiocb *iocb,
-			struct iov_iter *iter);
-extern ssize_t nfs_file_direct_write(struct kiocb *iocb,
-			struct iov_iter *iter);
+ssize_t nfs_file_direct_read(struct kiocb *iocb,
+			     struct iov_iter *iter, bool swap);
+ssize_t nfs_file_direct_write(struct kiocb *iocb,
+			      struct iov_iter *iter, bool swap);
 
 /*
  * linux/fs/nfs/dir.c
@@ -511,14 +525,13 @@ extern void nfs_set_verifier(struct dentry * dentry, unsigned long verf);
 extern void nfs_clear_verifier_delegated(struct inode *inode);
 #endif /* IS_ENABLED(CONFIG_NFS_V4) */
 extern struct dentry *nfs_add_or_obtain(struct dentry *dentry,
-			struct nfs_fh *fh, struct nfs_fattr *fattr,
-			struct nfs4_label *label);
+			struct nfs_fh *fh, struct nfs_fattr *fattr);
 extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh,
-			struct nfs_fattr *fattr, struct nfs4_label *label);
+			struct nfs_fattr *fattr);
 extern int nfs_may_open(struct inode *inode, const struct cred *cred, int openflags);
 extern void nfs_access_zap_cache(struct inode *inode);
-extern int nfs_access_get_cached(struct inode *inode, const struct cred *cred, struct nfs_access_entry *res,
-				 bool may_block);
+extern int nfs_access_get_cached(struct inode *inode, const struct cred *cred,
+				 u32 *mask, bool may_block);
 
 /*
  * linux/fs/nfs/symlink.c
@@ -565,23 +578,24 @@ extern int  nfs_updatepage(struct file *, struct page *, unsigned int, unsigned
 extern int nfs_sync_inode(struct inode *inode);
 extern int nfs_wb_all(struct inode *inode);
 extern int nfs_wb_page(struct inode *inode, struct page *page);
-extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);
+int nfs_wb_folio_cancel(struct inode *inode, struct folio *folio);
 extern int  nfs_commit_inode(struct inode *, int);
-extern struct nfs_commit_data *nfs_commitdata_alloc(bool never_fail);
+extern struct nfs_commit_data *nfs_commitdata_alloc(void);
 extern void nfs_commit_free(struct nfs_commit_data *data);
+bool nfs_commit_end(struct nfs_mds_commit_info *cinfo);
 
-static inline int
-nfs_have_writebacks(struct inode *inode)
+static inline bool nfs_have_writebacks(const struct inode *inode)
 {
-	return atomic_long_read(&NFS_I(inode)->nrequests) != 0;
+	if (S_ISREG(inode->i_mode))
+		return atomic_long_read(&NFS_I(inode)->nrequests) != 0;
+	return false;
 }
 
 /*
  * linux/fs/nfs/read.c
  */
 extern int  nfs_readpage(struct file *, struct page *);
-extern int  nfs_readpages(struct file *, struct address_space *,
-		struct list_head *, unsigned);
+void nfs_readahead(struct readahead_control *);
 
 /*
  * inline functions
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 2a9acbfe00f0..157d2bd6b241 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -120,11 +120,6 @@ struct nfs_client {
 	 * This is used to generate the mv0 callback address.
 	 */
 	char			cl_ipaddr[48];
-
-#ifdef CONFIG_NFS_FSCACHE
-	struct fscache_cookie	*fscache;	/* client index cache cookie */
-#endif
-
 	struct net		*cl_net;
 	struct list_head	pending_cb_stateids;
 };
@@ -143,6 +138,7 @@ struct nfs_server {
 	struct nlm_host		*nlm_host;	/* NLM client handle */
 	struct nfs_iostats __percpu *io_stats;	/* I/O statistics */
 	atomic_long_t		writeback;	/* number of writeback pages */
+	unsigned int		write_congested;/* flag set when writeback gets too high */
 	unsigned int		flags;		/* various flags */
 
 /* The following are for internal use only. Also see uapi/linux/nfs_mount.h */
@@ -156,6 +152,7 @@ struct nfs_server {
 #define NFS_MOUNT_SOFTREVAL		0x800000
 #define NFS_MOUNT_WRITE_EAGER		0x01000000
 #define NFS_MOUNT_WRITE_WAIT		0x02000000
+#define NFS_MOUNT_TRUNK_DISCOVERY	0x04000000
 
 	unsigned int		fattr_valid;	/* Valid attributes */
 	unsigned int		caps;		/* server capabilities */
@@ -194,8 +191,8 @@ struct nfs_server {
 	struct nfs_auth_info	auth_info;	/* parsed auth flavors */
 
 #ifdef CONFIG_NFS_FSCACHE
-	struct nfs_fscache_key	*fscache_key;	/* unique key for superblock */
-	struct fscache_cookie	*fscache;	/* superblock cookie */
+	struct fscache_volume	*fscache;	/* superblock cookie */
+	char			*fscache_uniq;	/* Uniquifier (or NULL) */
 #endif
 
 	u32			pnfs_blksize;	/* layout_blksize attr */
@@ -271,6 +268,8 @@ struct nfs_server {
 #define NFS_CAP_ACLS		(1U << 3)
 #define NFS_CAP_ATOMIC_OPEN	(1U << 4)
 #define NFS_CAP_LGOPEN		(1U << 5)
+#define NFS_CAP_CASE_INSENSITIVE	(1U << 6)
+#define NFS_CAP_CASE_PRESERVING	(1U << 7)
 #define NFS_CAP_POSIX_LOCK	(1U << 14)
 #define NFS_CAP_UIDGID_NOMAP	(1U << 15)
 #define NFS_CAP_STATEID_NFSV41	(1U << 16)
@@ -287,5 +286,5 @@ struct nfs_server {
 #define NFS_CAP_COPY_NOTIFY	(1U << 27)
 #define NFS_CAP_XATTR		(1U << 28)
 #define NFS_CAP_READ_PLUS	(1U << 29)
-
+#define NFS_CAP_FS_LOCATIONS	(1U << 30)
 #endif
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index e9698b6278a5..2863e5a69c6a 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -488,7 +488,6 @@ struct nfs_openres {
 	struct nfs4_change_info	cinfo;
 	__u32                   rflags;
 	struct nfs_fattr *      f_attr;
-	struct nfs4_label	*f_label;
 	struct nfs_seqid *	seqid;
 	const struct nfs_server *server;
 	fmode_t			delegation_type;
@@ -746,14 +745,12 @@ struct nfs_auth_info {
  */
 struct nfs_entry {
 	__u64			ino;
-	__u64			cookie,
-				prev_cookie;
+	__u64			cookie;
 	const char *		name;
 	unsigned int		len;
 	int			eof;
 	struct nfs_fh *		fh;
 	struct nfs_fattr *	fattr;
-	struct nfs4_label  *label;
 	unsigned char		d_type;
 	struct nfs_server *	server;
 };
@@ -834,7 +831,6 @@ struct nfs_getaclres {
 struct nfs_setattrres {
 	struct nfs4_sequence_res	seq_res;
 	struct nfs_fattr *              fattr;
-	struct nfs4_label		*label;
 	const struct nfs_server *	server;
 };
 
@@ -1041,7 +1037,6 @@ struct nfs4_create_res {
 	const struct nfs_server *	server;
 	struct nfs_fh *			fh;
 	struct nfs_fattr *		fattr;
-	struct nfs4_label		*label;
 	struct nfs4_change_info		dir_cinfo;
 };
 
@@ -1066,7 +1061,6 @@ struct nfs4_getattr_res {
 	struct nfs4_sequence_res	seq_res;
 	const struct nfs_server *	server;
 	struct nfs_fattr *		fattr;
-	struct nfs4_label		*label;
 };
 
 struct nfs4_link_arg {
@@ -1081,7 +1075,6 @@ struct nfs4_link_res {
 	struct nfs4_sequence_res	seq_res;
 	const struct nfs_server *	server;
 	struct nfs_fattr *		fattr;
-	struct nfs4_label		*label;
 	struct nfs4_change_info		cinfo;
 	struct nfs_fattr *		dir_attr;
 };
@@ -1098,7 +1091,6 @@ struct nfs4_lookup_res {
 	const struct nfs_server *	server;
 	struct nfs_fattr *		fattr;
 	struct nfs_fh *			fh;
-	struct nfs4_label		*label;
 };
 
 struct nfs4_lookupp_arg {
@@ -1112,7 +1104,6 @@ struct nfs4_lookupp_res {
 	const struct nfs_server		*server;
 	struct nfs_fattr		*fattr;
 	struct nfs_fh			*fh;
-	struct nfs4_label		*label;
 };
 
 struct nfs4_lookup_root_arg {
@@ -1202,6 +1193,8 @@ struct nfs4_server_caps_res {
 	u32				has_links;
 	u32				has_symlinks;
 	u32				fh_expire_type;
+	u32				case_insensitive;
+	u32				case_preserving;
 };
 
 #define NFS4_PATHNAME_MAXCOMPONENTS 512
@@ -1701,6 +1694,7 @@ struct nfs_unlinkdata {
 struct nfs_renamedata {
 	struct nfs_renameargs	args;
 	struct nfs_renameres	res;
+	struct rpc_task		task;
 	const struct cred	*cred;
 	struct inode		*old_dir;
 	struct dentry		*old_dentry;
@@ -1738,16 +1732,14 @@ struct nfs_rpc_ops {
 	int	(*submount) (struct fs_context *, struct nfs_server *);
 	int	(*try_get_tree) (struct fs_context *);
 	int	(*getattr) (struct nfs_server *, struct nfs_fh *,
-			    struct nfs_fattr *, struct nfs4_label *,
-			    struct inode *);
+			    struct nfs_fattr *, struct inode *);
 	int	(*setattr) (struct dentry *, struct nfs_fattr *,
 			    struct iattr *);
 	int	(*lookup)  (struct inode *, struct dentry *,
-			    struct nfs_fh *, struct nfs_fattr *,
-			    struct nfs4_label *);
+			    struct nfs_fh *, struct nfs_fattr *);
 	int	(*lookupp) (struct inode *, struct nfs_fh *,
-			    struct nfs_fattr *, struct nfs4_label *);
-	int	(*access)  (struct inode *, struct nfs_access_entry *);
+			    struct nfs_fattr *);
+	int	(*access)  (struct inode *, struct nfs_access_entry *, const struct cred *);
 	int	(*readlink)(struct inode *, struct page *, unsigned int,
 			    unsigned int);
 	int	(*create)  (struct inode *, struct dentry *,
@@ -1805,6 +1797,9 @@ struct nfs_rpc_ops {
 	struct nfs_server *(*create_server)(struct fs_context *);
 	struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
 					   struct nfs_fattr *, rpc_authflavor_t);
+	int	(*discover_trunking)(struct nfs_server *, struct nfs_fh *);
+	void	(*enable_swap)(struct inode *inode);
+	void	(*disable_swap)(struct inode *inode);
 };
 
 /*
diff --git a/include/linux/node.h b/include/linux/node.h
index 8e5a29897936..40d641a8bfb0 100644
--- a/include/linux/node.h
+++ b/include/linux/node.h
@@ -85,7 +85,7 @@ struct node {
 	struct device	dev;
 	struct list_head access_list;
 
-#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HUGETLBFS)
+#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_HUGETLBFS)
 	struct work_struct	node_work;
 #endif
 #ifdef CONFIG_HMEM_REPORTING
@@ -98,20 +98,21 @@ struct memory_block;
 extern struct node *node_devices[];
 typedef  void (*node_registration_func_t)(struct node *);
 
-#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_NUMA)
-void link_mem_sections(int nid, unsigned long start_pfn,
-		       unsigned long end_pfn,
-		       enum meminit_context context);
+#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_NUMA)
+void register_memory_blocks_under_node(int nid, unsigned long start_pfn,
+				       unsigned long end_pfn,
+				       enum meminit_context context);
 #else
-static inline void link_mem_sections(int nid, unsigned long start_pfn,
-				     unsigned long end_pfn,
-				     enum meminit_context context)
+static inline void register_memory_blocks_under_node(int nid, unsigned long start_pfn,
+						     unsigned long end_pfn,
+						     enum meminit_context context)
 {
 }
 #endif
 
 extern void unregister_node(struct node *node);
 #ifdef CONFIG_NUMA
+extern void node_dev_init(void);
 /* Core of the node registration - only memory hotplug should use this */
 extern int __register_one_node(int nid);
 
@@ -128,8 +129,8 @@ static inline int register_one_node(int nid)
 		error = __register_one_node(nid);
 		if (error)
 			return error;
-		/* link memory sections under this node */
-		link_mem_sections(nid, start_pfn, end_pfn, MEMINIT_EARLY);
+		register_memory_blocks_under_node(nid, start_pfn, end_pfn,
+						  MEMINIT_EARLY);
 	}
 
 	return error;
@@ -149,6 +150,9 @@ extern void register_hugetlbfs_with_node(node_registration_func_t doregister,
 					 node_registration_func_t unregister);
 #endif
 #else
+static inline void node_dev_init(void)
+{
+}
 static inline int __register_one_node(int nid)
 {
 	return 0;
@@ -181,4 +185,9 @@ static inline void register_hugetlbfs_with_node(node_registration_func_t reg,
 
 #define to_node(device) container_of(device, struct node, dev)
 
+static inline bool node_is_toptier(int node)
+{
+	return node_state(node, N_CPU);
+}
+
 #endif /* _LINUX_NODE_H_ */
diff --git a/include/linux/numa.h b/include/linux/numa.h
index cb44cfe2b725..59df211d051f 100644
--- a/include/linux/numa.h
+++ b/include/linux/numa.h
@@ -58,4 +58,8 @@ static inline int phys_to_target_node(u64 start)
 }
 #endif
 
+#ifdef CONFIG_HAVE_ARCH_NODE_DEV_GROUP
+extern const struct attribute_group arch_node_dev_group;
+#endif
+
 #endif /* _LINUX_NUMA_H */
diff --git a/include/linux/nvme-fc-driver.h b/include/linux/nvme-fc-driver.h
index 2a38f2b477a5..5358a5facdee 100644
--- a/include/linux/nvme-fc-driver.h
+++ b/include/linux/nvme-fc-driver.h
@@ -7,6 +7,7 @@
 #define _NVME_FC_DRIVER_H 1
 
 #include <linux/scatterlist.h>
+#include <linux/blk-mq.h>
 
 
 /*
@@ -497,6 +498,8 @@ struct nvme_fc_port_template {
 	int	(*xmt_ls_rsp)(struct nvme_fc_local_port *localport,
 				struct nvme_fc_remote_port *rport,
 				struct nvmefc_ls_rsp *ls_rsp);
+	void	(*map_queues)(struct nvme_fc_local_port *localport,
+			      struct blk_mq_queue_map *map);
 
 	u32	max_hw_queues;
 	u16	max_sgl_segments;
@@ -718,7 +721,7 @@ enum {
  *
  * Fields with static values for the port. Initialized by the
  * port_info struct supplied to the registration call.
- * @port_num:  NVME-FC transport subsytem port number
+ * @port_num:  NVME-FC transport subsystem port number
  * @node_name: FC WWNN for the port
  * @port_name: FC WWPN for the port
  * @private:   pointer to memory allocated alongside the local port
@@ -779,6 +782,10 @@ struct nvmet_fc_target_port {
  *       LS received.
  *       Entrypoint is Mandatory.
  *
+ * @map_queues: This functions lets the driver expose the queue mapping
+ *	 to the block layer.
+ *       Entrypoint is Optional.
+ *
  * @fcp_op:  Called to perform a data transfer or transmit a response.
  *       The nvmefc_tgt_fcp_req structure is the same LLDD-supplied
  *       exchange structure specified in the nvmet_fc_rcv_fcp_req() call
diff --git a/include/linux/nvme-rdma.h b/include/linux/nvme-rdma.h
index 3ec8e50efa16..4dd7e6fe92fb 100644
--- a/include/linux/nvme-rdma.h
+++ b/include/linux/nvme-rdma.h
@@ -6,6 +6,8 @@
 #ifndef _LINUX_NVME_RDMA_H
 #define _LINUX_NVME_RDMA_H
 
+#define NVME_RDMA_MAX_QUEUE_SIZE	128
+
 enum nvme_rdma_cm_fmt {
 	NVME_RDMA_CM_FMT_1_0 = 0x0,
 };
diff --git a/include/linux/nvme-tcp.h b/include/linux/nvme-tcp.h
index 959e0bd9a913..75470159a194 100644
--- a/include/linux/nvme-tcp.h
+++ b/include/linux/nvme-tcp.h
@@ -12,6 +12,7 @@
 #define NVME_TCP_DISC_PORT	8009
 #define NVME_TCP_ADMIN_CCSZ	SZ_8K
 #define NVME_TCP_DIGEST_LENGTH	4
+#define NVME_TCP_MIN_MAXH2CDATA 4096
 
 enum nvme_tcp_pfv {
 	NVME_TCP_PFV_1_0 = 0x0,
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index b7c4c4130b65..f626a445d1a8 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -27,8 +27,26 @@
 #define NVME_NSID_ALL		0xffffffff
 
 enum nvme_subsys_type {
-	NVME_NQN_DISC	= 1,		/* Discovery type target subsystem */
-	NVME_NQN_NVME	= 2,		/* NVME type target subsystem */
+	/* Referral to another discovery type target subsystem */
+	NVME_NQN_DISC	= 1,
+
+	/* NVME type target subsystem */
+	NVME_NQN_NVME	= 2,
+
+	/* Current discovery type target subsystem */
+	NVME_NQN_CURR	= 3,
+};
+
+enum nvme_ctrl_type {
+	NVME_CTRL_IO	= 1,		/* I/O controller */
+	NVME_CTRL_DISC	= 2,		/* Discovery controller */
+	NVME_CTRL_ADMIN	= 3,		/* Administrative controller */
+};
+
+enum nvme_dctype {
+	NVME_DCTYPE_NOT_REPORTED	= 0,
+	NVME_DCTYPE_DDC			= 1, /* Direct Discovery Controller */
+	NVME_DCTYPE_CDC			= 2, /* Central Discovery Controller */
 };
 
 /* Address Family codes for Discovery Log Page entry ADRFAM field */
@@ -226,6 +244,7 @@ enum {
 enum nvme_ctrl_attr {
 	NVME_CTRL_ATTR_HID_128_BIT	= (1 << 0),
 	NVME_CTRL_ATTR_TBKAS		= (1 << 6),
+	NVME_CTRL_ATTR_ELBAS		= (1 << 15),
 };
 
 struct nvme_id_ctrl {
@@ -244,7 +263,9 @@ struct nvme_id_ctrl {
 	__le32			rtd3e;
 	__le32			oaes;
 	__le32			ctratt;
-	__u8			rsvd100[28];
+	__u8			rsvd100[11];
+	__u8			cntrltype;
+	__u8			fguid[16];
 	__le16			crdt1;
 	__le16			crdt2;
 	__le16			crdt3;
@@ -306,12 +327,15 @@ struct nvme_id_ctrl {
 	__le16			icdoff;
 	__u8			ctrattr;
 	__u8			msdbd;
-	__u8			rsvd1804[244];
+	__u8			rsvd1804[2];
+	__u8			dctype;
+	__u8			rsvd1807[241];
 	struct nvme_id_power_state	psd[32];
 	__u8			vs[1024];
 };
 
 enum {
+	NVME_CTRL_CMIC_MULTI_PORT		= 1 << 0,
 	NVME_CTRL_CMIC_MULTI_CTRL		= 1 << 1,
 	NVME_CTRL_CMIC_ANA			= 1 << 3,
 	NVME_CTRL_ONCS_COMPARE			= 1 << 0,
@@ -322,6 +346,7 @@ enum {
 	NVME_CTRL_ONCS_TIMESTAMP		= 1 << 6,
 	NVME_CTRL_VWC_PRESENT			= 1 << 0,
 	NVME_CTRL_OACS_SEC_SUPP                 = 1 << 0,
+	NVME_CTRL_OACS_NS_MNGT_SUPP		= 1 << 3,
 	NVME_CTRL_OACS_DIRECTIVES		= 1 << 5,
 	NVME_CTRL_OACS_DBBUF_SUPP		= 1 << 8,
 	NVME_CTRL_LPA_CMD_EFFECTS_LOG		= 1 << 1,
@@ -376,8 +401,7 @@ struct nvme_id_ns {
 	__le16			endgid;
 	__u8			nguid[16];
 	__u8			eui64[8];
-	struct nvme_lbaf	lbaf[16];
-	__u8			rsvd192[192];
+	struct nvme_lbaf	lbaf[64];
 	__u8			vs[3712];
 };
 
@@ -395,8 +419,7 @@ struct nvme_id_ns_zns {
 	__le32			rrl;
 	__le32			frl;
 	__u8			rsvd20[2796];
-	struct nvme_zns_lbafe	lbafe[16];
-	__u8			rsvd3072[768];
+	struct nvme_zns_lbafe	lbafe[64];
 	__u8			vs[256];
 };
 
@@ -405,6 +428,30 @@ struct nvme_id_ctrl_zns {
 	__u8	rsvd1[4095];
 };
 
+struct nvme_id_ns_nvm {
+	__le64	lbstm;
+	__u8	pic;
+	__u8	rsvd9[3];
+	__le32	elbaf[64];
+	__u8	rsvd268[3828];
+};
+
+enum {
+	NVME_ID_NS_NVM_STS_MASK		= 0x3f,
+	NVME_ID_NS_NVM_GUARD_SHIFT	= 7,
+	NVME_ID_NS_NVM_GUARD_MASK	= 0x3,
+};
+
+static inline __u8 nvme_elbaf_sts(__u32 elbaf)
+{
+	return elbaf & NVME_ID_NS_NVM_STS_MASK;
+}
+
+static inline __u8 nvme_elbaf_guard_type(__u32 elbaf)
+{
+	return (elbaf >> NVME_ID_NS_NVM_GUARD_SHIFT) & NVME_ID_NS_NVM_GUARD_MASK;
+}
+
 struct nvme_id_ctrl_nvm {
 	__u8	vsl;
 	__u8	wzsl;
@@ -455,6 +502,8 @@ enum {
 	NVME_NS_FEAT_IO_OPT	= 1 << 4,
 	NVME_NS_ATTR_RO		= 1 << 0,
 	NVME_NS_FLBAS_LBA_MASK	= 0xf,
+	NVME_NS_FLBAS_LBA_UMASK	= 0x60,
+	NVME_NS_FLBAS_LBA_SHIFT	= 1,
 	NVME_NS_FLBAS_META_EXT	= 0x10,
 	NVME_NS_NMIC_SHARED	= 1 << 0,
 	NVME_LBAF_RP_BEST	= 0,
@@ -473,6 +522,18 @@ enum {
 	NVME_NS_DPS_PI_TYPE3	= 3,
 };
 
+enum {
+	NVME_NVM_NS_16B_GUARD	= 0,
+	NVME_NVM_NS_32B_GUARD	= 1,
+	NVME_NVM_NS_64B_GUARD	= 2,
+};
+
+static inline __u8 nvme_lbaf_index(__u8 flbas)
+{
+	return (flbas & NVME_NS_FLBAS_LBA_MASK) |
+		((flbas & NVME_NS_FLBAS_LBA_UMASK) >> NVME_NS_FLBAS_LBA_SHIFT);
+}
+
 /* Identify Namespace Metadata Capabilities (MC): */
 enum {
 	NVME_MC_EXTENDED_LBA	= (1 << 0),
@@ -819,7 +880,8 @@ struct nvme_rw_command {
 	__u8			flags;
 	__u16			command_id;
 	__le32			nsid;
-	__u64			rsvd2;
+	__le32			cdw2;
+	__le32			cdw3;
 	__le64			metadata;
 	union nvme_data_ptr	dptr;
 	__le64			slba;
@@ -973,11 +1035,14 @@ enum {
 
 struct nvme_feat_host_behavior {
 	__u8 acre;
-	__u8 resv1[511];
+	__u8 etdas;
+	__u8 lbafee;
+	__u8 resv1[509];
 };
 
 enum {
 	NVME_ENABLE_ACRE	= 1,
+	NVME_ENABLE_LBAFEE	= 1,
 };
 
 /* Admin commands */
@@ -1303,6 +1368,12 @@ struct nvmf_common_command {
 
 #define MAX_DISC_LOGS	255
 
+/* Discovery log page entry flags (EFLAGS): */
+enum {
+	NVME_DISC_EFLAGS_EPCSD		= (1 << 1),
+	NVME_DISC_EFLAGS_DUPRETINFO	= (1 << 0),
+};
+
 /* Discovery log page entry */
 struct nvmf_disc_rsp_page_entry {
 	__u8		trtype;
@@ -1312,7 +1383,8 @@ struct nvmf_disc_rsp_page_entry {
 	__le16		portid;
 	__le16		cntlid;
 	__le16		asqsz;
-	__u8		resv8[22];
+	__le16		eflags;
+	__u8		resv10[20];
 	char		trsvcid[NVMF_TRSVCID_SIZE];
 	__u8		resv64[192];
 	char		subnqn[NVMF_NQN_FIELD_LEN];
@@ -1614,6 +1686,7 @@ enum {
 	NVME_SC_HOST_ABORTED_CMD	= 0x371,
 
 	NVME_SC_CRD			= 0x1800,
+	NVME_SC_MORE			= 0x2000,
 	NVME_SC_DNR			= 0x4000,
 };
 
diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
index 104505e9028f..50caa117cb62 100644
--- a/include/linux/nvmem-provider.h
+++ b/include/linux/nvmem-provider.h
@@ -19,6 +19,9 @@ typedef int (*nvmem_reg_read_t)(void *priv, unsigned int offset,
 				void *val, size_t bytes);
 typedef int (*nvmem_reg_write_t)(void *priv, unsigned int offset,
 				 void *val, size_t bytes);
+/* used for vendor specific post processing of cell data */
+typedef int (*nvmem_cell_post_process_t)(void *priv, const char *id, unsigned int offset,
+					  void *buf, size_t bytes);
 
 enum nvmem_type {
 	NVMEM_TYPE_UNKNOWN = 0,
@@ -62,11 +65,13 @@ struct nvmem_keepout {
  * @no_of_node:	Device should not use the parent's of_node even if it's !NULL.
  * @reg_read:	Callback to read data.
  * @reg_write:	Callback to write data.
+ * @cell_post_process:	Callback for vendor specific post processing of cell data
  * @size:	Device size.
  * @word_size:	Minimum read/write access granularity.
  * @stride:	Minimum read/write access stride.
  * @priv:	User context passed to read/write callbacks.
- * @wp-gpio:   Write protect pin
+ * @wp-gpio:	Write protect pin
+ * @ignore_wp:  Write Protect pin is managed by the provider.
  *
  * Note: A default "nvmem<id>" name will be assigned to the device if
  * no name is specified in its configuration. In such case "<id>" is
@@ -88,10 +93,12 @@ struct nvmem_config {
 	enum nvmem_type		type;
 	bool			read_only;
 	bool			root_only;
+	bool			ignore_wp;
 	struct device_node	*of_node;
 	bool			no_of_node;
 	nvmem_reg_read_t	reg_read;
 	nvmem_reg_write_t	reg_write;
+	nvmem_cell_post_process_t cell_post_process;
 	int	size;
 	int	word_size;
 	int	stride;
@@ -128,8 +135,6 @@ void nvmem_unregister(struct nvmem_device *nvmem);
 struct nvmem_device *devm_nvmem_register(struct device *dev,
 					 const struct nvmem_config *cfg);
 
-int devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem);
-
 void nvmem_add_cell_table(struct nvmem_cell_table *table);
 void nvmem_del_cell_table(struct nvmem_cell_table *table);
 
@@ -148,12 +153,6 @@ devm_nvmem_register(struct device *dev, const struct nvmem_config *c)
 	return nvmem_register(c);
 }
 
-static inline int
-devm_nvmem_unregister(struct device *dev, struct nvmem_device *nvmem)
-{
-	return -EOPNOTSUPP;
-}
-
 static inline void nvmem_add_cell_table(struct nvmem_cell_table *table) {}
 static inline void nvmem_del_cell_table(struct nvmem_cell_table *table) {}
 
diff --git a/include/linux/objtool.h b/include/linux/objtool.h
index 7e72d975cb76..586d35720f13 100644
--- a/include/linux/objtool.h
+++ b/include/linux/objtool.h
@@ -66,6 +66,29 @@ struct unwind_hint {
 	static void __used __section(".discard.func_stack_frame_non_standard") \
 		*__func_stack_frame_non_standard_##func = func
 
+/*
+ * STACK_FRAME_NON_STANDARD_FP() is a frame-pointer-specific function ignore
+ * for the case where a function is intentionally missing frame pointer setup,
+ * but otherwise needs objtool/ORC coverage when frame pointers are disabled.
+ */
+#ifdef CONFIG_FRAME_POINTER
+#define STACK_FRAME_NON_STANDARD_FP(func) STACK_FRAME_NON_STANDARD(func)
+#else
+#define STACK_FRAME_NON_STANDARD_FP(func)
+#endif
+
+#define ANNOTATE_NOENDBR					\
+	"986: \n\t"						\
+	".pushsection .discard.noendbr\n\t"			\
+	_ASM_PTR " 986b\n\t"					\
+	".popsection\n\t"
+
+#define ASM_REACHABLE							\
+	"998:\n\t"							\
+	".pushsection .discard.reachable\n\t"				\
+	".long 998b - .\n\t"						\
+	".popsection\n\t"
+
 #else /* __ASSEMBLY__ */
 
 /*
@@ -118,6 +141,20 @@ struct unwind_hint {
 	.popsection
 .endm
 
+.macro ANNOTATE_NOENDBR
+.Lhere_\@:
+	.pushsection .discard.noendbr
+	.quad	.Lhere_\@
+	.popsection
+.endm
+
+.macro REACHABLE
+.Lhere_\@:
+	.pushsection .discard.reachable
+	.long	.Lhere_\@ - .
+	.popsection
+.endm
+
 #endif /* __ASSEMBLY__ */
 
 #else /* !CONFIG_STACK_VALIDATION */
@@ -127,12 +164,19 @@ struct unwind_hint {
 #define UNWIND_HINT(sp_reg, sp_offset, type, end)	\
 	"\n\t"
 #define STACK_FRAME_NON_STANDARD(func)
+#define STACK_FRAME_NON_STANDARD_FP(func)
+#define ANNOTATE_NOENDBR
+#define ASM_REACHABLE
 #else
 #define ANNOTATE_INTRA_FUNCTION_CALL
 .macro UNWIND_HINT sp_reg:req sp_offset=0 type:req end=0
 .endm
 .macro STACK_FRAME_NON_STANDARD func:req
 .endm
+.macro ANNOTATE_NOENDBR
+.endm
+.macro REACHABLE
+.endm
 #endif
 
 #endif /* CONFIG_STACK_VALIDATION */
diff --git a/include/linux/of.h b/include/linux/of.h
index 6f1c41f109bb..04971e85fbc9 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -185,7 +185,7 @@ static inline bool of_node_is_root(const struct device_node *node)
 	return node && (node->parent == NULL);
 }
 
-static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
+static inline int of_node_check_flag(const struct device_node *n, unsigned long flag)
 {
 	return test_bit(flag, &n->_flags);
 }
@@ -353,6 +353,7 @@ extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
 extern struct device_node *of_get_next_cpu_node(struct device_node *prev);
 extern struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
 						 int index);
+extern u64 of_get_cpu_hwid(struct device_node *cpun, unsigned int thread);
 
 #define for_each_property_of_node(dn, pp) \
 	for (pp = dn->properties; pp != NULL; pp = pp->next)
@@ -363,18 +364,12 @@ extern const struct of_device_id *of_match_node(
 	const struct of_device_id *matches, const struct device_node *node);
 extern int of_modalias_node(struct device_node *node, char *modalias, int len);
 extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args);
-extern struct device_node *of_parse_phandle(const struct device_node *np,
-					    const char *phandle_name,
-					    int index);
-extern int of_parse_phandle_with_args(const struct device_node *np,
-	const char *list_name, const char *cells_name, int index,
-	struct of_phandle_args *out_args);
+extern int __of_parse_phandle_with_args(const struct device_node *np,
+	const char *list_name, const char *cells_name, int cell_count,
+	int index, struct of_phandle_args *out_args);
 extern int of_parse_phandle_with_args_map(const struct device_node *np,
 	const char *list_name, const char *stem_name, int index,
 	struct of_phandle_args *out_args);
-extern int of_parse_phandle_with_fixed_args(const struct device_node *np,
-	const char *list_name, int cells_count, int index,
-	struct of_phandle_args *out_args);
 extern int of_count_phandle_with_args(const struct device_node *np,
 	const char *list_name, const char *cells_name);
 
@@ -393,9 +388,6 @@ extern int of_phandle_iterator_args(struct of_phandle_iterator *it,
 extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align));
 extern int of_alias_get_id(struct device_node *np, const char *stem);
 extern int of_alias_get_highest_id(const char *stem);
-extern int of_alias_get_alias_list(const struct of_device_id *matches,
-				   const char *stem, unsigned long *bitmap,
-				   unsigned int nbits);
 
 extern int of_machine_is_compatible(const char *compat);
 
@@ -415,130 +407,6 @@ extern int of_detach_node(struct device_node *);
 
 #define of_match_ptr(_ptr)	(_ptr)
 
-/**
- * of_property_read_u8_array - Find and read an array of u8 from a property.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_values:	pointer to return value, modified only if return value is 0.
- * @sz:		number of array elements to read
- *
- * Search for a property in a device node and read 8-bit value(s) from
- * it.
- *
- * dts entry of array should be like:
- *  ``property = /bits/ 8 <0x50 0x60 0x70>;``
- *
- * Return: 0 on success, -EINVAL if the property does not exist,
- * -ENODATA if property does not have a value, and -EOVERFLOW if the
- * property data isn't large enough.
- *
- * The out_values is modified only if a valid u8 value can be decoded.
- */
-static inline int of_property_read_u8_array(const struct device_node *np,
-					    const char *propname,
-					    u8 *out_values, size_t sz)
-{
-	int ret = of_property_read_variable_u8_array(np, propname, out_values,
-						     sz, 0);
-	if (ret >= 0)
-		return 0;
-	else
-		return ret;
-}
-
-/**
- * of_property_read_u16_array - Find and read an array of u16 from a property.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_values:	pointer to return value, modified only if return value is 0.
- * @sz:		number of array elements to read
- *
- * Search for a property in a device node and read 16-bit value(s) from
- * it.
- *
- * dts entry of array should be like:
- *  ``property = /bits/ 16 <0x5000 0x6000 0x7000>;``
- *
- * Return: 0 on success, -EINVAL if the property does not exist,
- * -ENODATA if property does not have a value, and -EOVERFLOW if the
- * property data isn't large enough.
- *
- * The out_values is modified only if a valid u16 value can be decoded.
- */
-static inline int of_property_read_u16_array(const struct device_node *np,
-					     const char *propname,
-					     u16 *out_values, size_t sz)
-{
-	int ret = of_property_read_variable_u16_array(np, propname, out_values,
-						      sz, 0);
-	if (ret >= 0)
-		return 0;
-	else
-		return ret;
-}
-
-/**
- * of_property_read_u32_array - Find and read an array of 32 bit integers
- * from a property.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_values:	pointer to return value, modified only if return value is 0.
- * @sz:		number of array elements to read
- *
- * Search for a property in a device node and read 32-bit value(s) from
- * it.
- *
- * Return: 0 on success, -EINVAL if the property does not exist,
- * -ENODATA if property does not have a value, and -EOVERFLOW if the
- * property data isn't large enough.
- *
- * The out_values is modified only if a valid u32 value can be decoded.
- */
-static inline int of_property_read_u32_array(const struct device_node *np,
-					     const char *propname,
-					     u32 *out_values, size_t sz)
-{
-	int ret = of_property_read_variable_u32_array(np, propname, out_values,
-						      sz, 0);
-	if (ret >= 0)
-		return 0;
-	else
-		return ret;
-}
-
-/**
- * of_property_read_u64_array - Find and read an array of 64 bit integers
- * from a property.
- *
- * @np:		device node from which the property value is to be read.
- * @propname:	name of the property to be searched.
- * @out_values:	pointer to return value, modified only if return value is 0.
- * @sz:		number of array elements to read
- *
- * Search for a property in a device node and read 64-bit value(s) from
- * it.
- *
- * Return: 0 on success, -EINVAL if the property does not exist,
- * -ENODATA if property does not have a value, and -EOVERFLOW if the
- * property data isn't large enough.
- *
- * The out_values is modified only if a valid u64 value can be decoded.
- */
-static inline int of_property_read_u64_array(const struct device_node *np,
-					     const char *propname,
-					     u64 *out_values, size_t sz)
-{
-	int ret = of_property_read_variable_u64_array(np, propname, out_values,
-						      sz, 0);
-	if (ret >= 0)
-		return 0;
-	else
-		return ret;
-}
-
 /*
  * struct property *prop;
  * const __be32 *p;
@@ -733,32 +601,6 @@ static inline int of_property_count_elems_of_size(const struct device_node *np,
 	return -ENOSYS;
 }
 
-static inline int of_property_read_u8_array(const struct device_node *np,
-			const char *propname, u8 *out_values, size_t sz)
-{
-	return -ENOSYS;
-}
-
-static inline int of_property_read_u16_array(const struct device_node *np,
-			const char *propname, u16 *out_values, size_t sz)
-{
-	return -ENOSYS;
-}
-
-static inline int of_property_read_u32_array(const struct device_node *np,
-					     const char *propname,
-					     u32 *out_values, size_t sz)
-{
-	return -ENOSYS;
-}
-
-static inline int of_property_read_u64_array(const struct device_node *np,
-					     const char *propname,
-					     u64 *out_values, size_t sz)
-{
-	return -ENOSYS;
-}
-
 static inline int of_property_read_u32_index(const struct device_node *np,
 			const char *propname, u32 index, u32 *out_value)
 {
@@ -864,18 +706,12 @@ static inline int of_property_read_string_helper(const struct device_node *np,
 	return -ENOSYS;
 }
 
-static inline struct device_node *of_parse_phandle(const struct device_node *np,
-						   const char *phandle_name,
-						   int index)
-{
-	return NULL;
-}
-
-static inline int of_parse_phandle_with_args(const struct device_node *np,
-					     const char *list_name,
-					     const char *cells_name,
-					     int index,
-					     struct of_phandle_args *out_args)
+static inline int __of_parse_phandle_with_args(const struct device_node *np,
+					       const char *list_name,
+					       const char *cells_name,
+					       int cell_count,
+					       int index,
+					       struct of_phandle_args *out_args)
 {
 	return -ENOSYS;
 }
@@ -889,13 +725,6 @@ static inline int of_parse_phandle_with_args_map(const struct device_node *np,
 	return -ENOSYS;
 }
 
-static inline int of_parse_phandle_with_fixed_args(const struct device_node *np,
-	const char *list_name, int cells_count, int index,
-	struct of_phandle_args *out_args)
-{
-	return -ENOSYS;
-}
-
 static inline int of_count_phandle_with_args(const struct device_node *np,
 					     const char *list_name,
 					     const char *cells_name)
@@ -934,13 +763,6 @@ static inline int of_alias_get_highest_id(const char *stem)
 	return -ENOSYS;
 }
 
-static inline int of_alias_get_alias_list(const struct of_device_id *matches,
-					  const char *stem, unsigned long *bitmap,
-					  unsigned int nbits)
-{
-	return -ENOSYS;
-}
-
 static inline int of_machine_is_compatible(const char *compat)
 {
 	return 0;
@@ -1077,6 +899,117 @@ static inline bool of_node_is_type(const struct device_node *np, const char *typ
 }
 
 /**
+ * of_parse_phandle - Resolve a phandle property to a device_node pointer
+ * @np: Pointer to device node holding phandle property
+ * @phandle_name: Name of property holding a phandle value
+ * @index: For properties holding a table of phandles, this is the index into
+ *         the table
+ *
+ * Return: The device_node pointer with refcount incremented.  Use
+ * of_node_put() on it when done.
+ */
+static inline struct device_node *of_parse_phandle(const struct device_node *np,
+						   const char *phandle_name,
+						   int index)
+{
+	struct of_phandle_args args;
+
+	if (__of_parse_phandle_with_args(np, phandle_name, NULL, 0,
+					 index, &args))
+		return NULL;
+
+	return args.np;
+}
+
+/**
+ * of_parse_phandle_with_args() - Find a node pointed by phandle in a list
+ * @np:		pointer to a device tree node containing a list
+ * @list_name:	property name that contains a list
+ * @cells_name:	property name that specifies phandles' arguments count
+ * @index:	index of a phandle to parse out
+ * @out_args:	optional pointer to output arguments structure (will be filled)
+ *
+ * This function is useful to parse lists of phandles and their arguments.
+ * Returns 0 on success and fills out_args, on error returns appropriate
+ * errno value.
+ *
+ * Caller is responsible to call of_node_put() on the returned out_args->np
+ * pointer.
+ *
+ * Example::
+ *
+ *  phandle1: node1 {
+ *	#list-cells = <2>;
+ *  };
+ *
+ *  phandle2: node2 {
+ *	#list-cells = <1>;
+ *  };
+ *
+ *  node3 {
+ *	list = <&phandle1 1 2 &phandle2 3>;
+ *  };
+ *
+ * To get a device_node of the ``node2`` node you may call this:
+ * of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args);
+ */
+static inline int of_parse_phandle_with_args(const struct device_node *np,
+					     const char *list_name,
+					     const char *cells_name,
+					     int index,
+					     struct of_phandle_args *out_args)
+{
+	int cell_count = -1;
+
+	/* If cells_name is NULL we assume a cell count of 0 */
+	if (!cells_name)
+		cell_count = 0;
+
+	return __of_parse_phandle_with_args(np, list_name, cells_name,
+					    cell_count, index, out_args);
+}
+
+/**
+ * of_parse_phandle_with_fixed_args() - Find a node pointed by phandle in a list
+ * @np:		pointer to a device tree node containing a list
+ * @list_name:	property name that contains a list
+ * @cell_count: number of argument cells following the phandle
+ * @index:	index of a phandle to parse out
+ * @out_args:	optional pointer to output arguments structure (will be filled)
+ *
+ * This function is useful to parse lists of phandles and their arguments.
+ * Returns 0 on success and fills out_args, on error returns appropriate
+ * errno value.
+ *
+ * Caller is responsible to call of_node_put() on the returned out_args->np
+ * pointer.
+ *
+ * Example::
+ *
+ *  phandle1: node1 {
+ *  };
+ *
+ *  phandle2: node2 {
+ *  };
+ *
+ *  node3 {
+ *	list = <&phandle1 0 2 &phandle2 2 3>;
+ *  };
+ *
+ * To get a device_node of the ``node2`` node you may call this:
+ * of_parse_phandle_with_fixed_args(node3, "list", 2, 1, &args);
+ */
+static inline int of_parse_phandle_with_fixed_args(const struct device_node *np,
+						   const char *list_name,
+						   int cell_count,
+						   int index,
+						   struct of_phandle_args *out_args)
+{
+	return __of_parse_phandle_with_args(np, list_name, NULL, cell_count,
+					    index, out_args);
+}
+
+/**
  * of_property_count_u8_elems - Count the number of u8 elements in a property
  *
  * @np:		device node from which the property value is to be read.
@@ -1235,6 +1168,130 @@ static inline bool of_property_read_bool(const struct device_node *np,
 	return prop ? true : false;
 }
 
+/**
+ * of_property_read_u8_array - Find and read an array of u8 from a property.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_values:	pointer to return value, modified only if return value is 0.
+ * @sz:		number of array elements to read
+ *
+ * Search for a property in a device node and read 8-bit value(s) from
+ * it.
+ *
+ * dts entry of array should be like:
+ *  ``property = /bits/ 8 <0x50 0x60 0x70>;``
+ *
+ * Return: 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * The out_values is modified only if a valid u8 value can be decoded.
+ */
+static inline int of_property_read_u8_array(const struct device_node *np,
+					    const char *propname,
+					    u8 *out_values, size_t sz)
+{
+	int ret = of_property_read_variable_u8_array(np, propname, out_values,
+						     sz, 0);
+	if (ret >= 0)
+		return 0;
+	else
+		return ret;
+}
+
+/**
+ * of_property_read_u16_array - Find and read an array of u16 from a property.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_values:	pointer to return value, modified only if return value is 0.
+ * @sz:		number of array elements to read
+ *
+ * Search for a property in a device node and read 16-bit value(s) from
+ * it.
+ *
+ * dts entry of array should be like:
+ *  ``property = /bits/ 16 <0x5000 0x6000 0x7000>;``
+ *
+ * Return: 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * The out_values is modified only if a valid u16 value can be decoded.
+ */
+static inline int of_property_read_u16_array(const struct device_node *np,
+					     const char *propname,
+					     u16 *out_values, size_t sz)
+{
+	int ret = of_property_read_variable_u16_array(np, propname, out_values,
+						      sz, 0);
+	if (ret >= 0)
+		return 0;
+	else
+		return ret;
+}
+
+/**
+ * of_property_read_u32_array - Find and read an array of 32 bit integers
+ * from a property.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_values:	pointer to return value, modified only if return value is 0.
+ * @sz:		number of array elements to read
+ *
+ * Search for a property in a device node and read 32-bit value(s) from
+ * it.
+ *
+ * Return: 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * The out_values is modified only if a valid u32 value can be decoded.
+ */
+static inline int of_property_read_u32_array(const struct device_node *np,
+					     const char *propname,
+					     u32 *out_values, size_t sz)
+{
+	int ret = of_property_read_variable_u32_array(np, propname, out_values,
+						      sz, 0);
+	if (ret >= 0)
+		return 0;
+	else
+		return ret;
+}
+
+/**
+ * of_property_read_u64_array - Find and read an array of 64 bit integers
+ * from a property.
+ *
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ * @out_values:	pointer to return value, modified only if return value is 0.
+ * @sz:		number of array elements to read
+ *
+ * Search for a property in a device node and read 64-bit value(s) from
+ * it.
+ *
+ * Return: 0 on success, -EINVAL if the property does not exist,
+ * -ENODATA if property does not have a value, and -EOVERFLOW if the
+ * property data isn't large enough.
+ *
+ * The out_values is modified only if a valid u64 value can be decoded.
+ */
+static inline int of_property_read_u64_array(const struct device_node *np,
+					     const char *propname,
+					     u64 *out_values, size_t sz)
+{
+	int ret = of_property_read_variable_u64_array(np, propname, out_values,
+						      sz, 0);
+	if (ret >= 0)
+		return 0;
+	else
+		return ret;
+}
+
 static inline int of_property_read_u8(const struct device_node *np,
 				       const char *propname,
 				       u8 *out_value)
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index cf6a65b94d40..d69ad5bb1eb1 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -58,20 +58,17 @@ extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
 extern unsigned long of_get_flat_dt_root(void);
 extern uint32_t of_get_flat_dt_phandle(unsigned long node);
 
-extern int early_init_dt_scan_chosen(unsigned long node, const char *uname,
-				     int depth, void *data);
-extern int early_init_dt_scan_memory(unsigned long node, const char *uname,
-				     int depth, void *data);
+extern int early_init_dt_scan_chosen(char *cmdline);
+extern int early_init_dt_scan_memory(void);
+extern void early_init_dt_check_for_usable_mem_range(void);
 extern int early_init_dt_scan_chosen_stdout(void);
 extern void early_init_fdt_scan_reserved_mem(void);
 extern void early_init_fdt_reserve_self(void);
-extern void __init early_init_dt_scan_chosen_arch(unsigned long node);
 extern void early_init_dt_add_memory_arch(u64 base, u64 size);
 extern u64 dt_mem_next_cell(int s, const __be32 **cellp);
 
 /* Early flat tree scan hooks */
-extern int early_init_dt_scan_root(unsigned long node, const char *uname,
-				   int depth, void *data);
+extern int early_init_dt_scan_root(void);
 
 extern bool early_init_dt_scan(void *params);
 extern bool early_init_dt_verify(void *params);
@@ -87,6 +84,7 @@ extern void unflatten_and_copy_device_tree(void);
 extern void early_init_devtree(void *);
 extern void early_get_first_memblock_info(void *, phys_addr_t *);
 #else /* CONFIG_OF_EARLY_FLATTREE */
+static inline void early_init_dt_check_for_usable_mem_range(void) {}
 static inline int early_init_dt_scan_chosen_stdout(void) { return -ENODEV; }
 static inline void early_init_fdt_scan_reserved_mem(void) {}
 static inline void early_init_fdt_reserve_self(void) {}
diff --git a/include/linux/of_net.h b/include/linux/of_net.h
index daef3b0d9270..0484b613ca64 100644
--- a/include/linux/of_net.h
+++ b/include/linux/of_net.h
@@ -8,12 +8,13 @@
 
 #include <linux/phy.h>
 
-#ifdef CONFIG_OF_NET
+#if defined(CONFIG_OF) && defined(CONFIG_NET)
 #include <linux/of.h>
 
 struct net_device;
 extern int of_get_phy_mode(struct device_node *np, phy_interface_t *interface);
 extern int of_get_mac_address(struct device_node *np, u8 *mac);
+int of_get_ethdev_address(struct device_node *np, struct net_device *dev);
 extern struct net_device *of_find_net_device_by_node(struct device_node *np);
 #else
 static inline int of_get_phy_mode(struct device_node *np,
@@ -27,6 +28,11 @@ static inline int of_get_mac_address(struct device_node *np, u8 *mac)
 	return -ENODEV;
 }
 
+static inline int of_get_ethdev_address(struct device_node *np, struct net_device *dev)
+{
+	return -ENODEV;
+}
+
 static inline struct net_device *of_find_net_device_by_node(struct device_node *np)
 {
 	return NULL;
diff --git a/include/linux/once.h b/include/linux/once.h
index d361fb14ac3a..f54523052bbc 100644
--- a/include/linux/once.h
+++ b/include/linux/once.h
@@ -38,7 +38,7 @@ void __do_once_done(bool *done, struct static_key_true *once_key,
 #define DO_ONCE(func, ...)						     \
 	({								     \
 		bool ___ret = false;					     \
-		static bool ___done = false;				     \
+		static bool __section(".data.once") ___done = false;	     \
 		static DEFINE_STATIC_KEY_TRUE(___once_key);		     \
 		if (static_branch_unlikely(&___once_key)) {		     \
 			unsigned long ___flags;				     \
diff --git a/include/linux/overflow.h b/include/linux/overflow.h
index 4669632bd72b..f1221d11f8e5 100644
--- a/include/linux/overflow.h
+++ b/include/linux/overflow.h
@@ -4,6 +4,7 @@
 
 #include <linux/compiler.h>
 #include <linux/limits.h>
+#include <linux/const.h>
 
 /*
  * We need to compute the minimum and maximum values representable in a given
@@ -118,81 +119,94 @@ static inline bool __must_check __must_check_overflow(bool overflow)
 }))
 
 /**
- * array_size() - Calculate size of 2-dimensional array.
- *
- * @a: dimension one
- * @b: dimension two
+ * size_mul() - Calculate size_t multiplication with saturation at SIZE_MAX
  *
- * Calculates size of 2-dimensional array: @a * @b.
+ * @factor1: first factor
+ * @factor2: second factor
  *
- * Returns: number of bytes needed to represent the array or SIZE_MAX on
- * overflow.
+ * Returns: calculate @factor1 * @factor2, both promoted to size_t,
+ * with any overflow causing the return value to be SIZE_MAX. The
+ * lvalue must be size_t to avoid implicit type conversion.
  */
-static inline __must_check size_t array_size(size_t a, size_t b)
+static inline size_t __must_check size_mul(size_t factor1, size_t factor2)
 {
 	size_t bytes;
 
-	if (check_mul_overflow(a, b, &bytes))
+	if (check_mul_overflow(factor1, factor2, &bytes))
 		return SIZE_MAX;
 
 	return bytes;
 }
 
 /**
- * array3_size() - Calculate size of 3-dimensional array.
+ * size_add() - Calculate size_t addition with saturation at SIZE_MAX
  *
- * @a: dimension one
- * @b: dimension two
- * @c: dimension three
- *
- * Calculates size of 3-dimensional array: @a * @b * @c.
+ * @addend1: first addend
+ * @addend2: second addend
  *
- * Returns: number of bytes needed to represent the array or SIZE_MAX on
- * overflow.
+ * Returns: calculate @addend1 + @addend2, both promoted to size_t,
+ * with any overflow causing the return value to be SIZE_MAX. The
+ * lvalue must be size_t to avoid implicit type conversion.
  */
-static inline __must_check size_t array3_size(size_t a, size_t b, size_t c)
+static inline size_t __must_check size_add(size_t addend1, size_t addend2)
 {
 	size_t bytes;
 
-	if (check_mul_overflow(a, b, &bytes))
-		return SIZE_MAX;
-	if (check_mul_overflow(bytes, c, &bytes))
+	if (check_add_overflow(addend1, addend2, &bytes))
 		return SIZE_MAX;
 
 	return bytes;
 }
 
-/*
- * Compute a*b+c, returning SIZE_MAX on overflow. Internal helper for
- * struct_size() below.
+/**
+ * size_sub() - Calculate size_t subtraction with saturation at SIZE_MAX
+ *
+ * @minuend: value to subtract from
+ * @subtrahend: value to subtract from @minuend
+ *
+ * Returns: calculate @minuend - @subtrahend, both promoted to size_t,
+ * with any overflow causing the return value to be SIZE_MAX. For
+ * composition with the size_add() and size_mul() helpers, neither
+ * argument may be SIZE_MAX (or the result with be forced to SIZE_MAX).
+ * The lvalue must be size_t to avoid implicit type conversion.
  */
-static inline __must_check size_t __ab_c_size(size_t a, size_t b, size_t c)
+static inline size_t __must_check size_sub(size_t minuend, size_t subtrahend)
 {
 	size_t bytes;
 
-	if (check_mul_overflow(a, b, &bytes))
-		return SIZE_MAX;
-	if (check_add_overflow(bytes, c, &bytes))
+	if (minuend == SIZE_MAX || subtrahend == SIZE_MAX ||
+	    check_sub_overflow(minuend, subtrahend, &bytes))
 		return SIZE_MAX;
 
 	return bytes;
 }
 
 /**
- * struct_size() - Calculate size of structure with trailing array.
- * @p: Pointer to the structure.
- * @member: Name of the array member.
- * @count: Number of elements in the array.
+ * array_size() - Calculate size of 2-dimensional array.
  *
- * Calculates size of memory needed for structure @p followed by an
- * array of @count number of @member elements.
+ * @a: dimension one
+ * @b: dimension two
  *
- * Return: number of bytes needed or SIZE_MAX on overflow.
+ * Calculates size of 2-dimensional array: @a * @b.
+ *
+ * Returns: number of bytes needed to represent the array or SIZE_MAX on
+ * overflow.
  */
-#define struct_size(p, member, count)					\
-	__ab_c_size(count,						\
-		    sizeof(*(p)->member) + __must_be_array((p)->member),\
-		    sizeof(*(p)))
+#define array_size(a, b)	size_mul(a, b)
+
+/**
+ * array3_size() - Calculate size of 3-dimensional array.
+ *
+ * @a: dimension one
+ * @b: dimension two
+ * @c: dimension three
+ *
+ * Calculates size of 3-dimensional array: @a * @b * @c.
+ *
+ * Returns: number of bytes needed to represent the array or SIZE_MAX on
+ * overflow.
+ */
+#define array3_size(a, b, c)	size_mul(size_mul(a, b), c)
 
 /**
  * flex_array_size() - Calculate size of a flexible array member
@@ -208,7 +222,25 @@ static inline __must_check size_t __ab_c_size(size_t a, size_t b, size_t c)
  * Return: number of bytes needed or SIZE_MAX on overflow.
  */
 #define flex_array_size(p, member, count)				\
-	array_size(count,						\
-		    sizeof(*(p)->member) + __must_be_array((p)->member))
+	__builtin_choose_expr(__is_constexpr(count),			\
+		(count) * sizeof(*(p)->member) + __must_be_array((p)->member),	\
+		size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
+
+/**
+ * struct_size() - Calculate size of structure with trailing flexible array.
+ *
+ * @p: Pointer to the structure.
+ * @member: Name of the array member.
+ * @count: Number of elements in the array.
+ *
+ * Calculates size of memory needed for structure @p followed by an
+ * array of @count number of @member elements.
+ *
+ * Return: number of bytes needed or SIZE_MAX on overflow.
+ */
+#define struct_size(p, member, count)					\
+	__builtin_choose_expr(__is_constexpr(count),			\
+		sizeof(*(p)) + flex_array_size(p, member, count),	\
+		size_add(sizeof(*(p)), flex_array_size(p, member, count)))
 
 #endif /* __LINUX_OVERFLOW_H */
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index fbfd3fad48f2..9d8eeaa67d05 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -68,9 +68,6 @@
  * might lose their PG_swapbacked flag when they simply can be dropped (e.g. as
  * a result of MADV_FREE).
  *
- * PG_uptodate tells whether the page's contents is valid.  When a read
- * completes, the page becomes uptodate, unless a disk I/O error happened.
- *
  * PG_referenced, PG_reclaim are used for page reclaim for anonymous and
  * file-backed pagecache (see mm/vmscan.c).
  *
@@ -143,6 +140,8 @@ enum pageflags {
 #endif
 	__NR_PAGEFLAGS,
 
+	PG_readahead = PG_reclaim,
+
 	/* Filesystems */
 	PG_checked = PG_owner_priv_1,
 
@@ -191,31 +190,128 @@ enum pageflags {
 
 #ifndef __GENERATING_BOUNDS_H
 
+#ifdef CONFIG_HUGETLB_PAGE_FREE_VMEMMAP
+DECLARE_STATIC_KEY_MAYBE(CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON,
+			 hugetlb_free_vmemmap_enabled_key);
+
+static __always_inline bool hugetlb_free_vmemmap_enabled(void)
+{
+	return static_branch_maybe(CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON,
+				   &hugetlb_free_vmemmap_enabled_key);
+}
+
+/*
+ * If the feature of freeing some vmemmap pages associated with each HugeTLB
+ * page is enabled, the head vmemmap page frame is reused and all of the tail
+ * vmemmap addresses map to the head vmemmap page frame (furture details can
+ * refer to the figure at the head of the mm/hugetlb_vmemmap.c).  In other
+ * words, there are more than one page struct with PG_head associated with each
+ * HugeTLB page.  We __know__ that there is only one head page struct, the tail
+ * page structs with PG_head are fake head page structs.  We need an approach
+ * to distinguish between those two different types of page structs so that
+ * compound_head() can return the real head page struct when the parameter is
+ * the tail page struct but with PG_head.
+ *
+ * The page_fixed_fake_head() returns the real head page struct if the @page is
+ * fake page head, otherwise, returns @page which can either be a true page
+ * head or tail.
+ */
+static __always_inline const struct page *page_fixed_fake_head(const struct page *page)
+{
+	if (!hugetlb_free_vmemmap_enabled())
+		return page;
+
+	/*
+	 * Only addresses aligned with PAGE_SIZE of struct page may be fake head
+	 * struct page. The alignment check aims to avoid access the fields (
+	 * e.g. compound_head) of the @page[1]. It can avoid touch a (possibly)
+	 * cold cacheline in some cases.
+	 */
+	if (IS_ALIGNED((unsigned long)page, PAGE_SIZE) &&
+	    test_bit(PG_head, &page->flags)) {
+		/*
+		 * We can safely access the field of the @page[1] with PG_head
+		 * because the @page is a compound page composed with at least
+		 * two contiguous pages.
+		 */
+		unsigned long head = READ_ONCE(page[1].compound_head);
+
+		if (likely(head & 1))
+			return (const struct page *)(head - 1);
+	}
+	return page;
+}
+#else
+static inline const struct page *page_fixed_fake_head(const struct page *page)
+{
+	return page;
+}
+
+static inline bool hugetlb_free_vmemmap_enabled(void)
+{
+	return false;
+}
+#endif
+
+static __always_inline int page_is_fake_head(struct page *page)
+{
+	return page_fixed_fake_head(page) != page;
+}
+
 static inline unsigned long _compound_head(const struct page *page)
 {
 	unsigned long head = READ_ONCE(page->compound_head);
 
 	if (unlikely(head & 1))
 		return head - 1;
-	return (unsigned long)page;
+	return (unsigned long)page_fixed_fake_head(page);
 }
 
 #define compound_head(page)	((typeof(page))_compound_head(page))
 
+/**
+ * page_folio - Converts from page to folio.
+ * @p: The page.
+ *
+ * Every page is part of a folio.  This function cannot be called on a
+ * NULL pointer.
+ *
+ * Context: No reference, nor lock is required on @page.  If the caller
+ * does not hold a reference, this call may race with a folio split, so
+ * it should re-check the folio still contains this page after gaining
+ * a reference on the folio.
+ * Return: The folio which contains this page.
+ */
+#define page_folio(p)		(_Generic((p),				\
+	const struct page *:	(const struct folio *)_compound_head(p), \
+	struct page *:		(struct folio *)_compound_head(p)))
+
+/**
+ * folio_page - Return a page from a folio.
+ * @folio: The folio.
+ * @n: The page number to return.
+ *
+ * @n is relative to the start of the folio.  This function does not
+ * check that the page number lies within @folio; the caller is presumed
+ * to have a reference to the page.
+ */
+#define folio_page(folio, n)	nth_page(&(folio)->page, n)
+
 static __always_inline int PageTail(struct page *page)
 {
-	return READ_ONCE(page->compound_head) & 1;
+	return READ_ONCE(page->compound_head) & 1 || page_is_fake_head(page);
 }
 
 static __always_inline int PageCompound(struct page *page)
 {
-	return test_bit(PG_head, &page->flags) || PageTail(page);
+	return test_bit(PG_head, &page->flags) ||
+	       READ_ONCE(page->compound_head) & 1;
 }
 
 #define	PAGE_POISON_PATTERN	-1l
 static inline int PagePoisoned(const struct page *page)
 {
-	return page->flags == PAGE_POISON_PATTERN;
+	return READ_ONCE(page->flags) == PAGE_POISON_PATTERN;
 }
 
 #ifdef CONFIG_DEBUG_VM
@@ -226,6 +322,15 @@ static inline void page_init_poison(struct page *page, size_t size)
 }
 #endif
 
+static unsigned long *folio_flags(struct folio *folio, unsigned n)
+{
+	struct page *page = &folio->page;
+
+	VM_BUG_ON_PGFLAGS(PageTail(page), page);
+	VM_BUG_ON_PGFLAGS(n > 0 && !test_bit(PG_head, &page->flags), page);
+	return &page[n].flags;
+}
+
 /*
  * Page flags policies wrt compound pages
  *
@@ -270,36 +375,64 @@ static inline void page_init_poison(struct page *page, size_t size)
 		VM_BUG_ON_PGFLAGS(!PageHead(page), page);		\
 		PF_POISONED_CHECK(&page[1]); })
 
+/* Which page is the flag stored in */
+#define FOLIO_PF_ANY		0
+#define FOLIO_PF_HEAD		0
+#define FOLIO_PF_ONLY_HEAD	0
+#define FOLIO_PF_NO_TAIL	0
+#define FOLIO_PF_NO_COMPOUND	0
+#define FOLIO_PF_SECOND		1
+
 /*
  * Macros to create function definitions for page flags
  */
 #define TESTPAGEFLAG(uname, lname, policy)				\
+static __always_inline bool folio_test_##lname(struct folio *folio)	\
+{ return test_bit(PG_##lname, folio_flags(folio, FOLIO_##policy)); }	\
 static __always_inline int Page##uname(struct page *page)		\
-	{ return test_bit(PG_##lname, &policy(page, 0)->flags); }
+{ return test_bit(PG_##lname, &policy(page, 0)->flags); }
 
 #define SETPAGEFLAG(uname, lname, policy)				\
+static __always_inline							\
+void folio_set_##lname(struct folio *folio)				\
+{ set_bit(PG_##lname, folio_flags(folio, FOLIO_##policy)); }		\
 static __always_inline void SetPage##uname(struct page *page)		\
-	{ set_bit(PG_##lname, &policy(page, 1)->flags); }
+{ set_bit(PG_##lname, &policy(page, 1)->flags); }
 
 #define CLEARPAGEFLAG(uname, lname, policy)				\
+static __always_inline							\
+void folio_clear_##lname(struct folio *folio)				\
+{ clear_bit(PG_##lname, folio_flags(folio, FOLIO_##policy)); }		\
 static __always_inline void ClearPage##uname(struct page *page)		\
-	{ clear_bit(PG_##lname, &policy(page, 1)->flags); }
+{ clear_bit(PG_##lname, &policy(page, 1)->flags); }
 
 #define __SETPAGEFLAG(uname, lname, policy)				\
+static __always_inline							\
+void __folio_set_##lname(struct folio *folio)				\
+{ __set_bit(PG_##lname, folio_flags(folio, FOLIO_##policy)); }		\
 static __always_inline void __SetPage##uname(struct page *page)		\
-	{ __set_bit(PG_##lname, &policy(page, 1)->flags); }
+{ __set_bit(PG_##lname, &policy(page, 1)->flags); }
 
 #define __CLEARPAGEFLAG(uname, lname, policy)				\
+static __always_inline							\
+void __folio_clear_##lname(struct folio *folio)				\
+{ __clear_bit(PG_##lname, folio_flags(folio, FOLIO_##policy)); }	\
 static __always_inline void __ClearPage##uname(struct page *page)	\
-	{ __clear_bit(PG_##lname, &policy(page, 1)->flags); }
+{ __clear_bit(PG_##lname, &policy(page, 1)->flags); }
 
 #define TESTSETFLAG(uname, lname, policy)				\
+static __always_inline							\
+bool folio_test_set_##lname(struct folio *folio)			\
+{ return test_and_set_bit(PG_##lname, folio_flags(folio, FOLIO_##policy)); } \
 static __always_inline int TestSetPage##uname(struct page *page)	\
-	{ return test_and_set_bit(PG_##lname, &policy(page, 1)->flags); }
+{ return test_and_set_bit(PG_##lname, &policy(page, 1)->flags); }
 
 #define TESTCLEARFLAG(uname, lname, policy)				\
+static __always_inline							\
+bool folio_test_clear_##lname(struct folio *folio)			\
+{ return test_and_clear_bit(PG_##lname, folio_flags(folio, FOLIO_##policy)); } \
 static __always_inline int TestClearPage##uname(struct page *page)	\
-	{ return test_and_clear_bit(PG_##lname, &policy(page, 1)->flags); }
+{ return test_and_clear_bit(PG_##lname, &policy(page, 1)->flags); }
 
 #define PAGEFLAG(uname, lname, policy)					\
 	TESTPAGEFLAG(uname, lname, policy)				\
@@ -315,32 +448,40 @@ static __always_inline int TestClearPage##uname(struct page *page)	\
 	TESTSETFLAG(uname, lname, policy)				\
 	TESTCLEARFLAG(uname, lname, policy)
 
-#define TESTPAGEFLAG_FALSE(uname)					\
+#define TESTPAGEFLAG_FALSE(uname, lname)				\
+static inline bool folio_test_##lname(const struct folio *folio) { return false; } \
 static inline int Page##uname(const struct page *page) { return 0; }
 
-#define SETPAGEFLAG_NOOP(uname)						\
+#define SETPAGEFLAG_NOOP(uname, lname)					\
+static inline void folio_set_##lname(struct folio *folio) { }		\
 static inline void SetPage##uname(struct page *page) {  }
 
-#define CLEARPAGEFLAG_NOOP(uname)					\
+#define CLEARPAGEFLAG_NOOP(uname, lname)				\
+static inline void folio_clear_##lname(struct folio *folio) { }		\
 static inline void ClearPage##uname(struct page *page) {  }
 
-#define __CLEARPAGEFLAG_NOOP(uname)					\
+#define __CLEARPAGEFLAG_NOOP(uname, lname)				\
+static inline void __folio_clear_##lname(struct folio *folio) { }	\
 static inline void __ClearPage##uname(struct page *page) {  }
 
-#define TESTSETFLAG_FALSE(uname)					\
+#define TESTSETFLAG_FALSE(uname, lname)					\
+static inline bool folio_test_set_##lname(struct folio *folio)		\
+{ return 0; }								\
 static inline int TestSetPage##uname(struct page *page) { return 0; }
 
-#define TESTCLEARFLAG_FALSE(uname)					\
+#define TESTCLEARFLAG_FALSE(uname, lname)				\
+static inline bool folio_test_clear_##lname(struct folio *folio)	\
+{ return 0; }								\
 static inline int TestClearPage##uname(struct page *page) { return 0; }
 
-#define PAGEFLAG_FALSE(uname) TESTPAGEFLAG_FALSE(uname)			\
-	SETPAGEFLAG_NOOP(uname) CLEARPAGEFLAG_NOOP(uname)
+#define PAGEFLAG_FALSE(uname, lname) TESTPAGEFLAG_FALSE(uname, lname)	\
+	SETPAGEFLAG_NOOP(uname, lname) CLEARPAGEFLAG_NOOP(uname, lname)
 
-#define TESTSCFLAG_FALSE(uname)						\
-	TESTSETFLAG_FALSE(uname) TESTCLEARFLAG_FALSE(uname)
+#define TESTSCFLAG_FALSE(uname, lname)					\
+	TESTSETFLAG_FALSE(uname, lname) TESTCLEARFLAG_FALSE(uname, lname)
 
 __PAGEFLAG(Locked, locked, PF_NO_TAIL)
-PAGEFLAG(Waiters, waiters, PF_ONLY_HEAD) __CLEARPAGEFLAG(Waiters, waiters, PF_ONLY_HEAD)
+PAGEFLAG(Waiters, waiters, PF_ONLY_HEAD)
 PAGEFLAG(Error, error, PF_NO_TAIL) TESTCLEARFLAG(Error, error, PF_NO_TAIL)
 PAGEFLAG(Referenced, referenced, PF_HEAD)
 	TESTCLEARFLAG(Referenced, referenced, PF_HEAD)
@@ -393,8 +534,8 @@ PAGEFLAG(MappedToDisk, mappedtodisk, PF_NO_TAIL)
 /* PG_readahead is only used for reads; PG_reclaim is only for writes */
 PAGEFLAG(Reclaim, reclaim, PF_NO_TAIL)
 	TESTCLEARFLAG(Reclaim, reclaim, PF_NO_TAIL)
-PAGEFLAG(Readahead, reclaim, PF_NO_COMPOUND)
-	TESTCLEARFLAG(Readahead, reclaim, PF_NO_COMPOUND)
+PAGEFLAG(Readahead, readahead, PF_NO_COMPOUND)
+	TESTCLEARFLAG(Readahead, readahead, PF_NO_COMPOUND)
 
 #ifdef CONFIG_HIGHMEM
 /*
@@ -403,22 +544,25 @@ PAGEFLAG(Readahead, reclaim, PF_NO_COMPOUND)
  */
 #define PageHighMem(__p) is_highmem_idx(page_zonenum(__p))
 #else
-PAGEFLAG_FALSE(HighMem)
+PAGEFLAG_FALSE(HighMem, highmem)
 #endif
 
 #ifdef CONFIG_SWAP
-static __always_inline int PageSwapCache(struct page *page)
+static __always_inline bool folio_test_swapcache(struct folio *folio)
 {
-#ifdef CONFIG_THP_SWAP
-	page = compound_head(page);
-#endif
-	return PageSwapBacked(page) && test_bit(PG_swapcache, &page->flags);
+	return folio_test_swapbacked(folio) &&
+			test_bit(PG_swapcache, folio_flags(folio, 0));
+}
 
+static __always_inline bool PageSwapCache(struct page *page)
+{
+	return folio_test_swapcache(page_folio(page));
 }
+
 SETPAGEFLAG(SwapCache, swapcache, PF_NO_TAIL)
 CLEARPAGEFLAG(SwapCache, swapcache, PF_NO_TAIL)
 #else
-PAGEFLAG_FALSE(SwapCache)
+PAGEFLAG_FALSE(SwapCache, swapcache)
 #endif
 
 PAGEFLAG(Unevictable, unevictable, PF_HEAD)
@@ -430,23 +574,27 @@ PAGEFLAG(Mlocked, mlocked, PF_NO_TAIL)
 	__CLEARPAGEFLAG(Mlocked, mlocked, PF_NO_TAIL)
 	TESTSCFLAG(Mlocked, mlocked, PF_NO_TAIL)
 #else
-PAGEFLAG_FALSE(Mlocked) __CLEARPAGEFLAG_NOOP(Mlocked)
-	TESTSCFLAG_FALSE(Mlocked)
+PAGEFLAG_FALSE(Mlocked, mlocked) __CLEARPAGEFLAG_NOOP(Mlocked, mlocked)
+	TESTSCFLAG_FALSE(Mlocked, mlocked)
 #endif
 
 #ifdef CONFIG_ARCH_USES_PG_UNCACHED
 PAGEFLAG(Uncached, uncached, PF_NO_COMPOUND)
 #else
-PAGEFLAG_FALSE(Uncached)
+PAGEFLAG_FALSE(Uncached, uncached)
 #endif
 
 #ifdef CONFIG_MEMORY_FAILURE
 PAGEFLAG(HWPoison, hwpoison, PF_ANY)
 TESTSCFLAG(HWPoison, hwpoison, PF_ANY)
 #define __PG_HWPOISON (1UL << PG_hwpoison)
+#define MAGIC_HWPOISON	0x48575053U	/* HWPS */
+extern void SetPageHWPoisonTakenOff(struct page *page);
+extern void ClearPageHWPoisonTakenOff(struct page *page);
 extern bool take_page_off_buddy(struct page *page);
+extern bool put_page_back_buddy(struct page *page);
 #else
-PAGEFLAG_FALSE(HWPoison)
+PAGEFLAG_FALSE(HWPoison, hwpoison)
 #define __PG_HWPOISON 0
 #endif
 
@@ -460,7 +608,7 @@ PAGEFLAG(Idle, idle, PF_ANY)
 #ifdef CONFIG_KASAN_HW_TAGS
 PAGEFLAG(SkipKASanPoison, skip_kasan_poison, PF_HEAD)
 #else
-PAGEFLAG_FALSE(SkipKASanPoison)
+PAGEFLAG_FALSE(SkipKASanPoison, skip_kasan_poison)
 #endif
 
 /*
@@ -498,10 +646,14 @@ static __always_inline int PageMappingFlags(struct page *page)
 	return ((unsigned long)page->mapping & PAGE_MAPPING_FLAGS) != 0;
 }
 
-static __always_inline int PageAnon(struct page *page)
+static __always_inline bool folio_test_anon(struct folio *folio)
+{
+	return ((unsigned long)folio->mapping & PAGE_MAPPING_ANON) != 0;
+}
+
+static __always_inline bool PageAnon(struct page *page)
 {
-	page = compound_head(page);
-	return ((unsigned long)page->mapping & PAGE_MAPPING_ANON) != 0;
+	return folio_test_anon(page_folio(page));
 }
 
 static __always_inline int __PageMovable(struct page *page)
@@ -517,30 +669,42 @@ static __always_inline int __PageMovable(struct page *page)
  * is found in VM_MERGEABLE vmas.  It's a PageAnon page, pointing not to any
  * anon_vma, but to that page's node of the stable tree.
  */
-static __always_inline int PageKsm(struct page *page)
+static __always_inline bool folio_test_ksm(struct folio *folio)
 {
-	page = compound_head(page);
-	return ((unsigned long)page->mapping & PAGE_MAPPING_FLAGS) ==
+	return ((unsigned long)folio->mapping & PAGE_MAPPING_FLAGS) ==
 				PAGE_MAPPING_KSM;
 }
+
+static __always_inline bool PageKsm(struct page *page)
+{
+	return folio_test_ksm(page_folio(page));
+}
 #else
-TESTPAGEFLAG_FALSE(Ksm)
+TESTPAGEFLAG_FALSE(Ksm, ksm)
 #endif
 
 u64 stable_page_flags(struct page *page);
 
-static inline int PageUptodate(struct page *page)
+/**
+ * folio_test_uptodate - Is this folio up to date?
+ * @folio: The folio.
+ *
+ * The uptodate flag is set on a folio when every byte in the folio is
+ * at least as new as the corresponding bytes on storage.  Anonymous
+ * and CoW folios are always uptodate.  If the folio is not uptodate,
+ * some of the bytes in it may be; see the is_partially_uptodate()
+ * address_space operation.
+ */
+static inline bool folio_test_uptodate(struct folio *folio)
 {
-	int ret;
-	page = compound_head(page);
-	ret = test_bit(PG_uptodate, &(page)->flags);
+	bool ret = test_bit(PG_uptodate, folio_flags(folio, 0));
 	/*
-	 * Must ensure that the data we read out of the page is loaded
-	 * _after_ we've loaded page->flags to check for PageUptodate.
-	 * We can skip the barrier if the page is not uptodate, because
+	 * Must ensure that the data we read out of the folio is loaded
+	 * _after_ we've loaded folio->flags to check the uptodate bit.
+	 * We can skip the barrier if the folio is not uptodate, because
 	 * we wouldn't be reading anything from it.
 	 *
-	 * See SetPageUptodate() for the other side of the story.
+	 * See folio_mark_uptodate() for the other side of the story.
 	 */
 	if (ret)
 		smp_rmb();
@@ -548,46 +712,83 @@ static inline int PageUptodate(struct page *page)
 	return ret;
 }
 
-static __always_inline void __SetPageUptodate(struct page *page)
+static inline int PageUptodate(struct page *page)
+{
+	return folio_test_uptodate(page_folio(page));
+}
+
+static __always_inline void __folio_mark_uptodate(struct folio *folio)
 {
-	VM_BUG_ON_PAGE(PageTail(page), page);
 	smp_wmb();
-	__set_bit(PG_uptodate, &page->flags);
+	__set_bit(PG_uptodate, folio_flags(folio, 0));
 }
 
-static __always_inline void SetPageUptodate(struct page *page)
+static __always_inline void folio_mark_uptodate(struct folio *folio)
 {
-	VM_BUG_ON_PAGE(PageTail(page), page);
 	/*
 	 * Memory barrier must be issued before setting the PG_uptodate bit,
-	 * so that all previous stores issued in order to bring the page
-	 * uptodate are actually visible before PageUptodate becomes true.
+	 * so that all previous stores issued in order to bring the folio
+	 * uptodate are actually visible before folio_test_uptodate becomes true.
 	 */
 	smp_wmb();
-	set_bit(PG_uptodate, &page->flags);
+	set_bit(PG_uptodate, folio_flags(folio, 0));
+}
+
+static __always_inline void __SetPageUptodate(struct page *page)
+{
+	__folio_mark_uptodate((struct folio *)page);
+}
+
+static __always_inline void SetPageUptodate(struct page *page)
+{
+	folio_mark_uptodate((struct folio *)page);
 }
 
 CLEARPAGEFLAG(Uptodate, uptodate, PF_NO_TAIL)
 
-int test_clear_page_writeback(struct page *page);
-int __test_set_page_writeback(struct page *page, bool keep_write);
+bool __folio_start_writeback(struct folio *folio, bool keep_write);
+bool set_page_writeback(struct page *page);
 
-#define test_set_page_writeback(page)			\
-	__test_set_page_writeback(page, false)
-#define test_set_page_writeback_keepwrite(page)	\
-	__test_set_page_writeback(page, true)
+#define folio_start_writeback(folio)			\
+	__folio_start_writeback(folio, false)
+#define folio_start_writeback_keepwrite(folio)	\
+	__folio_start_writeback(folio, true)
 
-static inline void set_page_writeback(struct page *page)
+static inline void set_page_writeback_keepwrite(struct page *page)
 {
-	test_set_page_writeback(page);
+	folio_start_writeback_keepwrite(page_folio(page));
 }
 
-static inline void set_page_writeback_keepwrite(struct page *page)
+static inline bool test_set_page_writeback(struct page *page)
+{
+	return set_page_writeback(page);
+}
+
+static __always_inline bool folio_test_head(struct folio *folio)
+{
+	return test_bit(PG_head, folio_flags(folio, FOLIO_PF_ANY));
+}
+
+static __always_inline int PageHead(struct page *page)
 {
-	test_set_page_writeback_keepwrite(page);
+	PF_POISONED_CHECK(page);
+	return test_bit(PG_head, &page->flags) && !page_is_fake_head(page);
 }
 
-__PAGEFLAG(Head, head, PF_ANY) CLEARPAGEFLAG(Head, head, PF_ANY)
+__SETPAGEFLAG(Head, head, PF_ANY)
+__CLEARPAGEFLAG(Head, head, PF_ANY)
+CLEARPAGEFLAG(Head, head, PF_ANY)
+
+/**
+ * folio_test_large() - Does this folio contain more than one page?
+ * @folio: The folio to test.
+ *
+ * Return: True if the folio is larger than one page.
+ */
+static inline bool folio_test_large(struct folio *folio)
+{
+	return folio_test_head(folio);
+}
 
 static __always_inline void set_compound_head(struct page *page, struct page *head)
 {
@@ -612,12 +813,15 @@ static inline void ClearPageCompound(struct page *page)
 #ifdef CONFIG_HUGETLB_PAGE
 int PageHuge(struct page *page);
 int PageHeadHuge(struct page *page);
+static inline bool folio_test_hugetlb(struct folio *folio)
+{
+	return PageHeadHuge(&folio->page);
+}
 #else
-TESTPAGEFLAG_FALSE(Huge)
-TESTPAGEFLAG_FALSE(HeadHuge)
+TESTPAGEFLAG_FALSE(Huge, hugetlb)
+TESTPAGEFLAG_FALSE(HeadHuge, headhuge)
 #endif
 
-
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 /*
  * PageHuge() only returns true for hugetlbfs pages, but not for
@@ -633,6 +837,11 @@ static inline int PageTransHuge(struct page *page)
 	return PageHead(page);
 }
 
+static inline bool folio_test_transhuge(struct folio *folio)
+{
+	return folio_test_head(folio);
+}
+
 /*
  * PageTransCompound returns true for both transparent huge pages
  * and hugetlbfs pages, so it should only be called when it's known
@@ -669,12 +878,12 @@ static inline int PageTransTail(struct page *page)
 PAGEFLAG(DoubleMap, double_map, PF_SECOND)
 	TESTSCFLAG(DoubleMap, double_map, PF_SECOND)
 #else
-TESTPAGEFLAG_FALSE(TransHuge)
-TESTPAGEFLAG_FALSE(TransCompound)
-TESTPAGEFLAG_FALSE(TransCompoundMap)
-TESTPAGEFLAG_FALSE(TransTail)
-PAGEFLAG_FALSE(DoubleMap)
-	TESTSCFLAG_FALSE(DoubleMap)
+TESTPAGEFLAG_FALSE(TransHuge, transhuge)
+TESTPAGEFLAG_FALSE(TransCompound, transcompound)
+TESTPAGEFLAG_FALSE(TransCompoundMap, transcompoundmap)
+TESTPAGEFLAG_FALSE(TransTail, transtail)
+PAGEFLAG_FALSE(DoubleMap, double_map)
+	TESTSCFLAG_FALSE(DoubleMap, double_map)
 #endif
 
 #if defined(CONFIG_MEMORY_FAILURE) && defined(CONFIG_TRANSPARENT_HUGEPAGE)
@@ -687,8 +896,8 @@ PAGEFLAG_FALSE(DoubleMap)
 PAGEFLAG(HasHWPoisoned, has_hwpoisoned, PF_SECOND)
 	TESTSCFLAG(HasHWPoisoned, has_hwpoisoned, PF_SECOND)
 #else
-PAGEFLAG_FALSE(HasHWPoisoned)
-	TESTSCFLAG_FALSE(HasHWPoisoned)
+PAGEFLAG_FALSE(HasHWPoisoned, has_hwpoisoned)
+	TESTSCFLAG_FALSE(HasHWPoisoned, has_hwpoisoned)
 #endif
 
 /*
@@ -791,44 +1000,7 @@ PAGE_TYPE_OPS(Guard, guard)
 
 extern bool is_free_buddy_page(struct page *page);
 
-__PAGEFLAG(Isolated, isolated, PF_ANY);
-
-/*
- * If network-based swap is enabled, sl*b must keep track of whether pages
- * were allocated from pfmemalloc reserves.
- */
-static inline int PageSlabPfmemalloc(struct page *page)
-{
-	VM_BUG_ON_PAGE(!PageSlab(page), page);
-	return PageActive(page);
-}
-
-/*
- * A version of PageSlabPfmemalloc() for opportunistic checks where the page
- * might have been freed under us and not be a PageSlab anymore.
- */
-static inline int __PageSlabPfmemalloc(struct page *page)
-{
-	return PageActive(page);
-}
-
-static inline void SetPageSlabPfmemalloc(struct page *page)
-{
-	VM_BUG_ON_PAGE(!PageSlab(page), page);
-	SetPageActive(page);
-}
-
-static inline void __ClearPageSlabPfmemalloc(struct page *page)
-{
-	VM_BUG_ON_PAGE(!PageSlab(page), page);
-	__ClearPageActive(page);
-}
-
-static inline void ClearPageSlabPfmemalloc(struct page *page)
-{
-	VM_BUG_ON_PAGE(!PageSlab(page), page);
-	ClearPageActive(page);
-}
+PAGEFLAG(Isolated, isolated, PF_ANY);
 
 #ifdef CONFIG_MMU
 #define __PG_MLOCKED		(1UL << PG_mlocked)
@@ -872,6 +1044,11 @@ static inline int page_has_private(struct page *page)
 	return !!(page->flags & PAGE_FLAGS_PRIVATE);
 }
 
+static inline bool folio_has_private(struct folio *folio)
+{
+	return page_has_private(&folio->page);
+}
+
 #undef PF_ANY
 #undef PF_HEAD
 #undef PF_ONLY_HEAD
diff --git a/include/linux/page_idle.h b/include/linux/page_idle.h
index d8a6aecf99cb..4663dfed1293 100644
--- a/include/linux/page_idle.h
+++ b/include/linux/page_idle.h
@@ -8,46 +8,15 @@
 
 #ifdef CONFIG_PAGE_IDLE_FLAG
 
-#ifdef CONFIG_64BIT
-static inline bool page_is_young(struct page *page)
-{
-	return PageYoung(page);
-}
-
-static inline void set_page_young(struct page *page)
-{
-	SetPageYoung(page);
-}
-
-static inline bool test_and_clear_page_young(struct page *page)
-{
-	return TestClearPageYoung(page);
-}
-
-static inline bool page_is_idle(struct page *page)
-{
-	return PageIdle(page);
-}
-
-static inline void set_page_idle(struct page *page)
-{
-	SetPageIdle(page);
-}
-
-static inline void clear_page_idle(struct page *page)
-{
-	ClearPageIdle(page);
-}
-#else /* !CONFIG_64BIT */
+#ifndef CONFIG_64BIT
 /*
  * If there is not enough space to store Idle and Young bits in page flags, use
  * page ext flags instead.
  */
-extern struct page_ext_operations page_idle_ops;
 
-static inline bool page_is_young(struct page *page)
+static inline bool folio_test_young(struct folio *folio)
 {
-	struct page_ext *page_ext = lookup_page_ext(page);
+	struct page_ext *page_ext = lookup_page_ext(&folio->page);
 
 	if (unlikely(!page_ext))
 		return false;
@@ -55,9 +24,9 @@ static inline bool page_is_young(struct page *page)
 	return test_bit(PAGE_EXT_YOUNG, &page_ext->flags);
 }
 
-static inline void set_page_young(struct page *page)
+static inline void folio_set_young(struct folio *folio)
 {
-	struct page_ext *page_ext = lookup_page_ext(page);
+	struct page_ext *page_ext = lookup_page_ext(&folio->page);
 
 	if (unlikely(!page_ext))
 		return;
@@ -65,9 +34,9 @@ static inline void set_page_young(struct page *page)
 	set_bit(PAGE_EXT_YOUNG, &page_ext->flags);
 }
 
-static inline bool test_and_clear_page_young(struct page *page)
+static inline bool folio_test_clear_young(struct folio *folio)
 {
-	struct page_ext *page_ext = lookup_page_ext(page);
+	struct page_ext *page_ext = lookup_page_ext(&folio->page);
 
 	if (unlikely(!page_ext))
 		return false;
@@ -75,9 +44,9 @@ static inline bool test_and_clear_page_young(struct page *page)
 	return test_and_clear_bit(PAGE_EXT_YOUNG, &page_ext->flags);
 }
 
-static inline bool page_is_idle(struct page *page)
+static inline bool folio_test_idle(struct folio *folio)
 {
-	struct page_ext *page_ext = lookup_page_ext(page);
+	struct page_ext *page_ext = lookup_page_ext(&folio->page);
 
 	if (unlikely(!page_ext))
 		return false;
@@ -85,9 +54,9 @@ static inline bool page_is_idle(struct page *page)
 	return test_bit(PAGE_EXT_IDLE, &page_ext->flags);
 }
 
-static inline void set_page_idle(struct page *page)
+static inline void folio_set_idle(struct folio *folio)
 {
-	struct page_ext *page_ext = lookup_page_ext(page);
+	struct page_ext *page_ext = lookup_page_ext(&folio->page);
 
 	if (unlikely(!page_ext))
 		return;
@@ -95,46 +64,75 @@ static inline void set_page_idle(struct page *page)
 	set_bit(PAGE_EXT_IDLE, &page_ext->flags);
 }
 
-static inline void clear_page_idle(struct page *page)
+static inline void folio_clear_idle(struct folio *folio)
 {
-	struct page_ext *page_ext = lookup_page_ext(page);
+	struct page_ext *page_ext = lookup_page_ext(&folio->page);
 
 	if (unlikely(!page_ext))
 		return;
 
 	clear_bit(PAGE_EXT_IDLE, &page_ext->flags);
 }
-#endif /* CONFIG_64BIT */
+#endif /* !CONFIG_64BIT */
 
 #else /* !CONFIG_PAGE_IDLE_FLAG */
 
-static inline bool page_is_young(struct page *page)
+static inline bool folio_test_young(struct folio *folio)
 {
 	return false;
 }
 
-static inline void set_page_young(struct page *page)
+static inline void folio_set_young(struct folio *folio)
 {
 }
 
-static inline bool test_and_clear_page_young(struct page *page)
+static inline bool folio_test_clear_young(struct folio *folio)
 {
 	return false;
 }
 
-static inline bool page_is_idle(struct page *page)
+static inline bool folio_test_idle(struct folio *folio)
 {
 	return false;
 }
 
-static inline void set_page_idle(struct page *page)
+static inline void folio_set_idle(struct folio *folio)
 {
 }
 
-static inline void clear_page_idle(struct page *page)
+static inline void folio_clear_idle(struct folio *folio)
 {
 }
 
 #endif /* CONFIG_PAGE_IDLE_FLAG */
 
+static inline bool page_is_young(struct page *page)
+{
+	return folio_test_young(page_folio(page));
+}
+
+static inline void set_page_young(struct page *page)
+{
+	folio_set_young(page_folio(page));
+}
+
+static inline bool test_and_clear_page_young(struct page *page)
+{
+	return folio_test_clear_young(page_folio(page));
+}
+
+static inline bool page_is_idle(struct page *page)
+{
+	return folio_test_idle(page_folio(page));
+}
+
+static inline void set_page_idle(struct page *page)
+{
+	folio_set_idle(page_folio(page));
+}
+
+static inline void clear_page_idle(struct page *page)
+{
+	folio_clear_idle(page_folio(page));
+}
 #endif /* _LINUX_MM_PAGE_IDLE_H */
diff --git a/include/linux/page_owner.h b/include/linux/page_owner.h
index 719bfe5108c5..119a0c9d2a8b 100644
--- a/include/linux/page_owner.h
+++ b/include/linux/page_owner.h
@@ -8,24 +8,24 @@
 extern struct static_key_false page_owner_inited;
 extern struct page_ext_operations page_owner_ops;
 
-extern void __reset_page_owner(struct page *page, unsigned int order);
+extern void __reset_page_owner(struct page *page, unsigned short order);
 extern void __set_page_owner(struct page *page,
-			unsigned int order, gfp_t gfp_mask);
+			unsigned short order, gfp_t gfp_mask);
 extern void __split_page_owner(struct page *page, unsigned int nr);
-extern void __copy_page_owner(struct page *oldpage, struct page *newpage);
+extern void __folio_copy_owner(struct folio *newfolio, struct folio *old);
 extern void __set_page_owner_migrate_reason(struct page *page, int reason);
 extern void __dump_page_owner(const struct page *page);
 extern void pagetypeinfo_showmixedcount_print(struct seq_file *m,
 					pg_data_t *pgdat, struct zone *zone);
 
-static inline void reset_page_owner(struct page *page, unsigned int order)
+static inline void reset_page_owner(struct page *page, unsigned short order)
 {
 	if (static_branch_unlikely(&page_owner_inited))
 		__reset_page_owner(page, order);
 }
 
 static inline void set_page_owner(struct page *page,
-			unsigned int order, gfp_t gfp_mask)
+			unsigned short order, gfp_t gfp_mask)
 {
 	if (static_branch_unlikely(&page_owner_inited))
 		__set_page_owner(page, order, gfp_mask);
@@ -36,10 +36,10 @@ static inline void split_page_owner(struct page *page, unsigned int nr)
 	if (static_branch_unlikely(&page_owner_inited))
 		__split_page_owner(page, nr);
 }
-static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
+static inline void folio_copy_owner(struct folio *newfolio, struct folio *old)
 {
 	if (static_branch_unlikely(&page_owner_inited))
-		__copy_page_owner(oldpage, newpage);
+		__folio_copy_owner(newfolio, old);
 }
 static inline void set_page_owner_migrate_reason(struct page *page, int reason)
 {
@@ -52,7 +52,7 @@ static inline void dump_page_owner(const struct page *page)
 		__dump_page_owner(page);
 }
 #else
-static inline void reset_page_owner(struct page *page, unsigned int order)
+static inline void reset_page_owner(struct page *page, unsigned short order)
 {
 }
 static inline void set_page_owner(struct page *page,
@@ -60,10 +60,10 @@ static inline void set_page_owner(struct page *page,
 {
 }
 static inline void split_page_owner(struct page *page,
-			unsigned int order)
+			unsigned short order)
 {
 }
-static inline void copy_page_owner(struct page *oldpage, struct page *newpage)
+static inline void folio_copy_owner(struct folio *newfolio, struct folio *folio)
 {
 }
 static inline void set_page_owner_migrate_reason(struct page *page, int reason)
diff --git a/include/linux/page_ref.h b/include/linux/page_ref.h
index 7ad46f45df39..2e677e6ad09f 100644
--- a/include/linux/page_ref.h
+++ b/include/linux/page_ref.h
@@ -67,9 +67,31 @@ static inline int page_ref_count(const struct page *page)
 	return atomic_read(&page->_refcount);
 }
 
+/**
+ * folio_ref_count - The reference count on this folio.
+ * @folio: The folio.
+ *
+ * The refcount is usually incremented by calls to folio_get() and
+ * decremented by calls to folio_put().  Some typical users of the
+ * folio refcount:
+ *
+ * - Each reference from a page table
+ * - The page cache
+ * - Filesystem private data
+ * - The LRU list
+ * - Pipes
+ * - Direct IO which references this page in the process address space
+ *
+ * Return: The number of references to this folio.
+ */
+static inline int folio_ref_count(const struct folio *folio)
+{
+	return page_ref_count(&folio->page);
+}
+
 static inline int page_count(const struct page *page)
 {
-	return atomic_read(&compound_head(page)->_refcount);
+	return folio_ref_count(page_folio(page));
 }
 
 static inline void set_page_count(struct page *page, int v)
@@ -79,6 +101,11 @@ static inline void set_page_count(struct page *page, int v)
 		__page_ref_set(page, v);
 }
 
+static inline void folio_set_count(struct folio *folio, int v)
+{
+	set_page_count(&folio->page, v);
+}
+
 /*
  * Setup the page count before being freed into the page allocator for
  * the first time (boot or memory hotplug)
@@ -95,6 +122,11 @@ static inline void page_ref_add(struct page *page, int nr)
 		__page_ref_mod(page, nr);
 }
 
+static inline void folio_ref_add(struct folio *folio, int nr)
+{
+	page_ref_add(&folio->page, nr);
+}
+
 static inline void page_ref_sub(struct page *page, int nr)
 {
 	atomic_sub(nr, &page->_refcount);
@@ -102,6 +134,11 @@ static inline void page_ref_sub(struct page *page, int nr)
 		__page_ref_mod(page, -nr);
 }
 
+static inline void folio_ref_sub(struct folio *folio, int nr)
+{
+	page_ref_sub(&folio->page, nr);
+}
+
 static inline int page_ref_sub_return(struct page *page, int nr)
 {
 	int ret = atomic_sub_return(nr, &page->_refcount);
@@ -111,6 +148,11 @@ static inline int page_ref_sub_return(struct page *page, int nr)
 	return ret;
 }
 
+static inline int folio_ref_sub_return(struct folio *folio, int nr)
+{
+	return page_ref_sub_return(&folio->page, nr);
+}
+
 static inline void page_ref_inc(struct page *page)
 {
 	atomic_inc(&page->_refcount);
@@ -118,6 +160,11 @@ static inline void page_ref_inc(struct page *page)
 		__page_ref_mod(page, 1);
 }
 
+static inline void folio_ref_inc(struct folio *folio)
+{
+	page_ref_inc(&folio->page);
+}
+
 static inline void page_ref_dec(struct page *page)
 {
 	atomic_dec(&page->_refcount);
@@ -125,6 +172,11 @@ static inline void page_ref_dec(struct page *page)
 		__page_ref_mod(page, -1);
 }
 
+static inline void folio_ref_dec(struct folio *folio)
+{
+	page_ref_dec(&folio->page);
+}
+
 static inline int page_ref_sub_and_test(struct page *page, int nr)
 {
 	int ret = atomic_sub_and_test(nr, &page->_refcount);
@@ -134,6 +186,11 @@ static inline int page_ref_sub_and_test(struct page *page, int nr)
 	return ret;
 }
 
+static inline int folio_ref_sub_and_test(struct folio *folio, int nr)
+{
+	return page_ref_sub_and_test(&folio->page, nr);
+}
+
 static inline int page_ref_inc_return(struct page *page)
 {
 	int ret = atomic_inc_return(&page->_refcount);
@@ -143,6 +200,11 @@ static inline int page_ref_inc_return(struct page *page)
 	return ret;
 }
 
+static inline int folio_ref_inc_return(struct folio *folio)
+{
+	return page_ref_inc_return(&folio->page);
+}
+
 static inline int page_ref_dec_and_test(struct page *page)
 {
 	int ret = atomic_dec_and_test(&page->_refcount);
@@ -152,6 +214,11 @@ static inline int page_ref_dec_and_test(struct page *page)
 	return ret;
 }
 
+static inline int folio_ref_dec_and_test(struct folio *folio)
+{
+	return page_ref_dec_and_test(&folio->page);
+}
+
 static inline int page_ref_dec_return(struct page *page)
 {
 	int ret = atomic_dec_return(&page->_refcount);
@@ -161,15 +228,91 @@ static inline int page_ref_dec_return(struct page *page)
 	return ret;
 }
 
-static inline int page_ref_add_unless(struct page *page, int nr, int u)
+static inline int folio_ref_dec_return(struct folio *folio)
+{
+	return page_ref_dec_return(&folio->page);
+}
+
+static inline bool page_ref_add_unless(struct page *page, int nr, int u)
 {
-	int ret = atomic_add_unless(&page->_refcount, nr, u);
+	bool ret = atomic_add_unless(&page->_refcount, nr, u);
 
 	if (page_ref_tracepoint_active(page_ref_mod_unless))
 		__page_ref_mod_unless(page, nr, ret);
 	return ret;
 }
 
+static inline bool folio_ref_add_unless(struct folio *folio, int nr, int u)
+{
+	return page_ref_add_unless(&folio->page, nr, u);
+}
+
+/**
+ * folio_try_get - Attempt to increase the refcount on a folio.
+ * @folio: The folio.
+ *
+ * If you do not already have a reference to a folio, you can attempt to
+ * get one using this function.  It may fail if, for example, the folio
+ * has been freed since you found a pointer to it, or it is frozen for
+ * the purposes of splitting or migration.
+ *
+ * Return: True if the reference count was successfully incremented.
+ */
+static inline bool folio_try_get(struct folio *folio)
+{
+	return folio_ref_add_unless(folio, 1, 0);
+}
+
+static inline bool folio_ref_try_add_rcu(struct folio *folio, int count)
+{
+#ifdef CONFIG_TINY_RCU
+	/*
+	 * The caller guarantees the folio will not be freed from interrupt
+	 * context, so (on !SMP) we only need preemption to be disabled
+	 * and TINY_RCU does that for us.
+	 */
+# ifdef CONFIG_PREEMPT_COUNT
+	VM_BUG_ON(!in_atomic() && !irqs_disabled());
+# endif
+	VM_BUG_ON_FOLIO(folio_ref_count(folio) == 0, folio);
+	folio_ref_add(folio, count);
+#else
+	if (unlikely(!folio_ref_add_unless(folio, count, 0))) {
+		/* Either the folio has been freed, or will be freed. */
+		return false;
+	}
+#endif
+	return true;
+}
+
+/**
+ * folio_try_get_rcu - Attempt to increase the refcount on a folio.
+ * @folio: The folio.
+ *
+ * This is a version of folio_try_get() optimised for non-SMP kernels.
+ * If you are still holding the rcu_read_lock() after looking up the
+ * page and know that the page cannot have its refcount decreased to
+ * zero in interrupt context, you can use this instead of folio_try_get().
+ *
+ * Example users include get_user_pages_fast() (as pages are not unmapped
+ * from interrupt context) and the page cache lookups (as pages are not
+ * truncated from interrupt context).  We also know that pages are not
+ * frozen in interrupt context for the purposes of splitting or migration.
+ *
+ * You can also use this function if you're holding a lock that prevents
+ * pages being frozen & removed; eg the i_pages lock for the page cache
+ * or the mmap_sem or page table lock for page tables.  In this case,
+ * it will always succeed, and you could have used a plain folio_get(),
+ * but it's sometimes more convenient to have a common function called
+ * from both locked and RCU-protected contexts.
+ *
+ * Return: True if the reference count was successfully incremented.
+ */
+static inline bool folio_try_get_rcu(struct folio *folio)
+{
+	return folio_ref_try_add_rcu(folio, 1);
+}
+
 static inline int page_ref_freeze(struct page *page, int count)
 {
 	int ret = likely(atomic_cmpxchg(&page->_refcount, count, 0) == count);
@@ -179,6 +322,11 @@ static inline int page_ref_freeze(struct page *page, int count)
 	return ret;
 }
 
+static inline int folio_ref_freeze(struct folio *folio, int count)
+{
+	return page_ref_freeze(&folio->page, count);
+}
+
 static inline void page_ref_unfreeze(struct page *page, int count)
 {
 	VM_BUG_ON_PAGE(page_count(page) != 0, page);
@@ -189,4 +337,8 @@ static inline void page_ref_unfreeze(struct page *page, int count)
 		__page_ref_unfreeze(page, count);
 }
 
+static inline void folio_ref_unfreeze(struct folio *folio, int count)
+{
+	page_ref_unfreeze(&folio->page, count);
+}
 #endif
diff --git a/include/linux/page_table_check.h b/include/linux/page_table_check.h
new file mode 100644
index 000000000000..01e16c7696ec
--- /dev/null
+++ b/include/linux/page_table_check.h
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/*
+ * Copyright (c) 2021, Google LLC.
+ * Pasha Tatashin <pasha.tatashin@soleen.com>
+ */
+#ifndef __LINUX_PAGE_TABLE_CHECK_H
+#define __LINUX_PAGE_TABLE_CHECK_H
+
+#ifdef CONFIG_PAGE_TABLE_CHECK
+#include <linux/jump_label.h>
+
+extern struct static_key_true page_table_check_disabled;
+extern struct page_ext_operations page_table_check_ops;
+
+void __page_table_check_zero(struct page *page, unsigned int order);
+void __page_table_check_pte_clear(struct mm_struct *mm, unsigned long addr,
+				  pte_t pte);
+void __page_table_check_pmd_clear(struct mm_struct *mm, unsigned long addr,
+				  pmd_t pmd);
+void __page_table_check_pud_clear(struct mm_struct *mm, unsigned long addr,
+				  pud_t pud);
+void __page_table_check_pte_set(struct mm_struct *mm, unsigned long addr,
+				pte_t *ptep, pte_t pte);
+void __page_table_check_pmd_set(struct mm_struct *mm, unsigned long addr,
+				pmd_t *pmdp, pmd_t pmd);
+void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr,
+				pud_t *pudp, pud_t pud);
+void __page_table_check_pte_clear_range(struct mm_struct *mm,
+					unsigned long addr,
+					pmd_t pmd);
+
+static inline void page_table_check_alloc(struct page *page, unsigned int order)
+{
+	if (static_branch_likely(&page_table_check_disabled))
+		return;
+
+	__page_table_check_zero(page, order);
+}
+
+static inline void page_table_check_free(struct page *page, unsigned int order)
+{
+	if (static_branch_likely(&page_table_check_disabled))
+		return;
+
+	__page_table_check_zero(page, order);
+}
+
+static inline void page_table_check_pte_clear(struct mm_struct *mm,
+					      unsigned long addr, pte_t pte)
+{
+	if (static_branch_likely(&page_table_check_disabled))
+		return;
+
+	__page_table_check_pte_clear(mm, addr, pte);
+}
+
+static inline void page_table_check_pmd_clear(struct mm_struct *mm,
+					      unsigned long addr, pmd_t pmd)
+{
+	if (static_branch_likely(&page_table_check_disabled))
+		return;
+
+	__page_table_check_pmd_clear(mm, addr, pmd);
+}
+
+static inline void page_table_check_pud_clear(struct mm_struct *mm,
+					      unsigned long addr, pud_t pud)
+{
+	if (static_branch_likely(&page_table_check_disabled))
+		return;
+
+	__page_table_check_pud_clear(mm, addr, pud);
+}
+
+static inline void page_table_check_pte_set(struct mm_struct *mm,
+					    unsigned long addr, pte_t *ptep,
+					    pte_t pte)
+{
+	if (static_branch_likely(&page_table_check_disabled))
+		return;
+
+	__page_table_check_pte_set(mm, addr, ptep, pte);
+}
+
+static inline void page_table_check_pmd_set(struct mm_struct *mm,
+					    unsigned long addr, pmd_t *pmdp,
+					    pmd_t pmd)
+{
+	if (static_branch_likely(&page_table_check_disabled))
+		return;
+
+	__page_table_check_pmd_set(mm, addr, pmdp, pmd);
+}
+
+static inline void page_table_check_pud_set(struct mm_struct *mm,
+					    unsigned long addr, pud_t *pudp,
+					    pud_t pud)
+{
+	if (static_branch_likely(&page_table_check_disabled))
+		return;
+
+	__page_table_check_pud_set(mm, addr, pudp, pud);
+}
+
+static inline void page_table_check_pte_clear_range(struct mm_struct *mm,
+						    unsigned long addr,
+						    pmd_t pmd)
+{
+	if (static_branch_likely(&page_table_check_disabled))
+		return;
+
+	__page_table_check_pte_clear_range(mm, addr, pmd);
+}
+
+#else
+
+static inline void page_table_check_alloc(struct page *page, unsigned int order)
+{
+}
+
+static inline void page_table_check_free(struct page *page, unsigned int order)
+{
+}
+
+static inline void page_table_check_pte_clear(struct mm_struct *mm,
+					      unsigned long addr, pte_t pte)
+{
+}
+
+static inline void page_table_check_pmd_clear(struct mm_struct *mm,
+					      unsigned long addr, pmd_t pmd)
+{
+}
+
+static inline void page_table_check_pud_clear(struct mm_struct *mm,
+					      unsigned long addr, pud_t pud)
+{
+}
+
+static inline void page_table_check_pte_set(struct mm_struct *mm,
+					    unsigned long addr, pte_t *ptep,
+					    pte_t pte)
+{
+}
+
+static inline void page_table_check_pmd_set(struct mm_struct *mm,
+					    unsigned long addr, pmd_t *pmdp,
+					    pmd_t pmd)
+{
+}
+
+static inline void page_table_check_pud_set(struct mm_struct *mm,
+					    unsigned long addr, pud_t *pudp,
+					    pud_t pud)
+{
+}
+
+static inline void page_table_check_pte_clear_range(struct mm_struct *mm,
+						    unsigned long addr,
+						    pmd_t pmd)
+{
+}
+
+#endif /* CONFIG_PAGE_TABLE_CHECK */
+#endif /* __LINUX_PAGE_TABLE_CHECK_H */
diff --git a/include/linux/pageblock-flags.h b/include/linux/pageblock-flags.h
index 973fd731a520..83c7248053a1 100644
--- a/include/linux/pageblock-flags.h
+++ b/include/linux/pageblock-flags.h
@@ -37,8 +37,11 @@ extern unsigned int pageblock_order;
 
 #else /* CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */
 
-/* Huge pages are a constant size */
-#define pageblock_order		HUGETLB_PAGE_ORDER
+/*
+ * Huge pages are a constant size, but don't exceed the maximum allocation
+ * granularity.
+ */
+#define pageblock_order		min_t(unsigned int, HUGETLB_PAGE_ORDER, MAX_ORDER - 1)
 
 #endif /* CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */
 
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 62db6b0176b9..993994cd943a 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -16,7 +16,121 @@
 #include <linux/hardirq.h> /* for in_interrupt() */
 #include <linux/hugetlb_inline.h>
 
-struct pagevec;
+struct folio_batch;
+
+unsigned long invalidate_mapping_pages(struct address_space *mapping,
+					pgoff_t start, pgoff_t end);
+
+static inline void invalidate_remote_inode(struct inode *inode)
+{
+	if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+	    S_ISLNK(inode->i_mode))
+		invalidate_mapping_pages(inode->i_mapping, 0, -1);
+}
+int invalidate_inode_pages2(struct address_space *mapping);
+int invalidate_inode_pages2_range(struct address_space *mapping,
+		pgoff_t start, pgoff_t end);
+int write_inode_now(struct inode *, int sync);
+int filemap_fdatawrite(struct address_space *);
+int filemap_flush(struct address_space *);
+int filemap_fdatawait_keep_errors(struct address_space *mapping);
+int filemap_fdatawait_range(struct address_space *, loff_t lstart, loff_t lend);
+int filemap_fdatawait_range_keep_errors(struct address_space *mapping,
+		loff_t start_byte, loff_t end_byte);
+
+static inline int filemap_fdatawait(struct address_space *mapping)
+{
+	return filemap_fdatawait_range(mapping, 0, LLONG_MAX);
+}
+
+bool filemap_range_has_page(struct address_space *, loff_t lstart, loff_t lend);
+int filemap_write_and_wait_range(struct address_space *mapping,
+		loff_t lstart, loff_t lend);
+int __filemap_fdatawrite_range(struct address_space *mapping,
+		loff_t start, loff_t end, int sync_mode);
+int filemap_fdatawrite_range(struct address_space *mapping,
+		loff_t start, loff_t end);
+int filemap_check_errors(struct address_space *mapping);
+void __filemap_set_wb_err(struct address_space *mapping, int err);
+int filemap_fdatawrite_wbc(struct address_space *mapping,
+			   struct writeback_control *wbc);
+
+static inline int filemap_write_and_wait(struct address_space *mapping)
+{
+	return filemap_write_and_wait_range(mapping, 0, LLONG_MAX);
+}
+
+/**
+ * filemap_set_wb_err - set a writeback error on an address_space
+ * @mapping: mapping in which to set writeback error
+ * @err: error to be set in mapping
+ *
+ * When writeback fails in some way, we must record that error so that
+ * userspace can be informed when fsync and the like are called.  We endeavor
+ * to report errors on any file that was open at the time of the error.  Some
+ * internal callers also need to know when writeback errors have occurred.
+ *
+ * When a writeback error occurs, most filesystems will want to call
+ * filemap_set_wb_err to record the error in the mapping so that it will be
+ * automatically reported whenever fsync is called on the file.
+ */
+static inline void filemap_set_wb_err(struct address_space *mapping, int err)
+{
+	/* Fastpath for common case of no error */
+	if (unlikely(err))
+		__filemap_set_wb_err(mapping, err);
+}
+
+/**
+ * filemap_check_wb_err - has an error occurred since the mark was sampled?
+ * @mapping: mapping to check for writeback errors
+ * @since: previously-sampled errseq_t
+ *
+ * Grab the errseq_t value from the mapping, and see if it has changed "since"
+ * the given value was sampled.
+ *
+ * If it has then report the latest error set, otherwise return 0.
+ */
+static inline int filemap_check_wb_err(struct address_space *mapping,
+					errseq_t since)
+{
+	return errseq_check(&mapping->wb_err, since);
+}
+
+/**
+ * filemap_sample_wb_err - sample the current errseq_t to test for later errors
+ * @mapping: mapping to be sampled
+ *
+ * Writeback errors are always reported relative to a particular sample point
+ * in the past. This function provides those sample points.
+ */
+static inline errseq_t filemap_sample_wb_err(struct address_space *mapping)
+{
+	return errseq_sample(&mapping->wb_err);
+}
+
+/**
+ * file_sample_sb_err - sample the current errseq_t to test for later errors
+ * @file: file pointer to be sampled
+ *
+ * Grab the most current superblock-level errseq_t value for the given
+ * struct file.
+ */
+static inline errseq_t file_sample_sb_err(struct file *file)
+{
+	return errseq_sample(&file->f_path.dentry->d_sb->s_wb_err);
+}
+
+/*
+ * Flush file data before changing attributes.  Caller must hold any locks
+ * required to prevent further writes to this file until we're done setting
+ * flags.
+ */
+static inline int inode_drain_writes(struct inode *inode)
+{
+	inode_dio_wait(inode);
+	return filemap_write_and_wait(inode->i_mapping);
+}
 
 static inline bool mapping_empty(struct address_space *mapping)
 {
@@ -24,6 +138,56 @@ static inline bool mapping_empty(struct address_space *mapping)
 }
 
 /*
+ * mapping_shrinkable - test if page cache state allows inode reclaim
+ * @mapping: the page cache mapping
+ *
+ * This checks the mapping's cache state for the pupose of inode
+ * reclaim and LRU management.
+ *
+ * The caller is expected to hold the i_lock, but is not required to
+ * hold the i_pages lock, which usually protects cache state. That's
+ * because the i_lock and the list_lru lock that protect the inode and
+ * its LRU state don't nest inside the irq-safe i_pages lock.
+ *
+ * Cache deletions are performed under the i_lock, which ensures that
+ * when an inode goes empty, it will reliably get queued on the LRU.
+ *
+ * Cache additions do not acquire the i_lock and may race with this
+ * check, in which case we'll report the inode as shrinkable when it
+ * has cache pages. This is okay: the shrinker also checks the
+ * refcount and the referenced bit, which will be elevated or set in
+ * the process of adding new cache pages to an inode.
+ */
+static inline bool mapping_shrinkable(struct address_space *mapping)
+{
+	void *head;
+
+	/*
+	 * On highmem systems, there could be lowmem pressure from the
+	 * inodes before there is highmem pressure from the page
+	 * cache. Make inodes shrinkable regardless of cache state.
+	 */
+	if (IS_ENABLED(CONFIG_HIGHMEM))
+		return true;
+
+	/* Cache completely empty? Shrink away. */
+	head = rcu_access_pointer(mapping->i_pages.xa_head);
+	if (!head)
+		return true;
+
+	/*
+	 * The xarray stores single offset-0 entries directly in the
+	 * head pointer, which allows non-resident page cache entries
+	 * to escape the shadow shrinker's list of xarray nodes. The
+	 * inode shrinker needs to pick them up under memory pressure.
+	 */
+	if (!xa_is_node(head) && xa_is_value(head))
+		return true;
+
+	return false;
+}
+
+/*
  * Bits in mapping->flags.
  */
 enum mapping_flags {
@@ -34,7 +198,7 @@ enum mapping_flags {
 	AS_EXITING	= 4, 	/* final truncate in progress */
 	/* writeback related tags are not used */
 	AS_NO_WRITEBACK_TAGS = 5,
-	AS_THP_SUPPORT = 6,	/* THPs supported */
+	AS_LARGE_FOLIO_SUPPORT = 6,
 };
 
 /**
@@ -126,9 +290,30 @@ static inline void mapping_set_gfp_mask(struct address_space *m, gfp_t mask)
 	m->gfp_mask = mask;
 }
 
-static inline bool mapping_thp_support(struct address_space *mapping)
+/**
+ * mapping_set_large_folios() - Indicate the file supports large folios.
+ * @mapping: The file.
+ *
+ * The filesystem should call this function in its inode constructor to
+ * indicate that the VFS can use large folios to cache the contents of
+ * the file.
+ *
+ * Context: This should not be called while the inode is active as it
+ * is non-atomic.
+ */
+static inline void mapping_set_large_folios(struct address_space *mapping)
+{
+	__set_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags);
+}
+
+/*
+ * Large folio support currently depends on THP.  These dependencies are
+ * being worked on but are not yet fixed.
+ */
+static inline bool mapping_large_folio_support(struct address_space *mapping)
 {
-	return test_bit(AS_THP_SUPPORT, &mapping->flags);
+	return IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) &&
+		test_bit(AS_LARGE_FOLIO_SUPPORT, &mapping->flags);
 }
 
 static inline int filemap_nr_thps(struct address_space *mapping)
@@ -143,168 +328,160 @@ static inline int filemap_nr_thps(struct address_space *mapping)
 static inline void filemap_nr_thps_inc(struct address_space *mapping)
 {
 #ifdef CONFIG_READ_ONLY_THP_FOR_FS
-	if (!mapping_thp_support(mapping))
+	if (!mapping_large_folio_support(mapping))
 		atomic_inc(&mapping->nr_thps);
 #else
-	WARN_ON_ONCE(1);
+	WARN_ON_ONCE(mapping_large_folio_support(mapping) == 0);
 #endif
 }
 
 static inline void filemap_nr_thps_dec(struct address_space *mapping)
 {
 #ifdef CONFIG_READ_ONLY_THP_FOR_FS
-	if (!mapping_thp_support(mapping))
+	if (!mapping_large_folio_support(mapping))
 		atomic_dec(&mapping->nr_thps);
 #else
-	WARN_ON_ONCE(1);
+	WARN_ON_ONCE(mapping_large_folio_support(mapping) == 0);
 #endif
 }
 
 void release_pages(struct page **pages, int nr);
 
+struct address_space *page_mapping(struct page *);
+struct address_space *folio_mapping(struct folio *);
+struct address_space *swapcache_mapping(struct folio *);
+
+/**
+ * folio_file_mapping - Find the mapping this folio belongs to.
+ * @folio: The folio.
+ *
+ * For folios which are in the page cache, return the mapping that this
+ * page belongs to.  Folios in the swap cache return the mapping of the
+ * swap file or swap device where the data is stored.  This is different
+ * from the mapping returned by folio_mapping().  The only reason to
+ * use it is if, like NFS, you return 0 from ->activate_swapfile.
+ *
+ * Do not call this for folios which aren't in the page cache or swap cache.
+ */
+static inline struct address_space *folio_file_mapping(struct folio *folio)
+{
+	if (unlikely(folio_test_swapcache(folio)))
+		return swapcache_mapping(folio);
+
+	return folio->mapping;
+}
+
+static inline struct address_space *page_file_mapping(struct page *page)
+{
+	return folio_file_mapping(page_folio(page));
+}
+
 /*
  * For file cache pages, return the address_space, otherwise return NULL
  */
 static inline struct address_space *page_mapping_file(struct page *page)
 {
-	if (unlikely(PageSwapCache(page)))
+	struct folio *folio = page_folio(page);
+
+	if (unlikely(folio_test_swapcache(folio)))
 		return NULL;
-	return page_mapping(page);
+	return folio_mapping(folio);
 }
 
-/*
- * speculatively take a reference to a page.
- * If the page is free (_refcount == 0), then _refcount is untouched, and 0
- * is returned. Otherwise, _refcount is incremented by 1 and 1 is returned.
- *
- * This function must be called inside the same rcu_read_lock() section as has
- * been used to lookup the page in the pagecache radix-tree (or page table):
- * this allows allocators to use a synchronize_rcu() to stabilize _refcount.
- *
- * Unless an RCU grace period has passed, the count of all pages coming out
- * of the allocator must be considered unstable. page_count may return higher
- * than expected, and put_page must be able to do the right thing when the
- * page has been finished with, no matter what it is subsequently allocated
- * for (because put_page is what is used here to drop an invalid speculative
- * reference).
- *
- * This is the interesting part of the lockless pagecache (and lockless
- * get_user_pages) locking protocol, where the lookup-side (eg. find_get_page)
- * has the following pattern:
- * 1. find page in radix tree
- * 2. conditionally increment refcount
- * 3. check the page is still in pagecache (if no, goto 1)
- *
- * Remove-side that cares about stability of _refcount (eg. reclaim) has the
- * following (with the i_pages lock held):
- * A. atomically check refcount is correct and set it to 0 (atomic_cmpxchg)
- * B. remove page from pagecache
- * C. free the page
- *
- * There are 2 critical interleavings that matter:
- * - 2 runs before A: in this case, A sees elevated refcount and bails out
- * - A runs before 2: in this case, 2 sees zero refcount and retries;
- *   subsequently, B will complete and 1 will find no page, causing the
- *   lookup to return NULL.
+/**
+ * folio_inode - Get the host inode for this folio.
+ * @folio: The folio.
  *
- * It is possible that between 1 and 2, the page is removed then the exact same
- * page is inserted into the same position in pagecache. That's OK: the
- * old find_get_page using a lock could equally have run before or after
- * such a re-insertion, depending on order that locks are granted.
+ * For folios which are in the page cache, return the inode that this folio
+ * belongs to.
  *
- * Lookups racing against pagecache insertion isn't a big problem: either 1
- * will find the page or it will not. Likewise, the old find_get_page could run
- * either before the insertion or afterwards, depending on timing.
+ * Do not call this for folios which aren't in the page cache.
  */
-static inline int __page_cache_add_speculative(struct page *page, int count)
-{
-#ifdef CONFIG_TINY_RCU
-# ifdef CONFIG_PREEMPT_COUNT
-	VM_BUG_ON(!in_atomic() && !irqs_disabled());
-# endif
-	/*
-	 * Preempt must be disabled here - we rely on rcu_read_lock doing
-	 * this for us.
-	 *
-	 * Pagecache won't be truncated from interrupt context, so if we have
-	 * found a page in the radix tree here, we have pinned its refcount by
-	 * disabling preempt, and hence no need for the "speculative get" that
-	 * SMP requires.
-	 */
-	VM_BUG_ON_PAGE(page_count(page) == 0, page);
-	page_ref_add(page, count);
-
-#else
-	if (unlikely(!page_ref_add_unless(page, count, 0))) {
-		/*
-		 * Either the page has been freed, or will be freed.
-		 * In either case, retry here and the caller should
-		 * do the right thing (see comments above).
-		 */
-		return 0;
-	}
-#endif
-	VM_BUG_ON_PAGE(PageTail(page), page);
-
-	return 1;
-}
-
-static inline int page_cache_get_speculative(struct page *page)
+static inline struct inode *folio_inode(struct folio *folio)
 {
-	return __page_cache_add_speculative(page, 1);
+	return folio->mapping->host;
 }
 
-static inline int page_cache_add_speculative(struct page *page, int count)
+/**
+ * folio_attach_private - Attach private data to a folio.
+ * @folio: Folio to attach data to.
+ * @data: Data to attach to folio.
+ *
+ * Attaching private data to a folio increments the page's reference count.
+ * The data must be detached before the folio will be freed.
+ */
+static inline void folio_attach_private(struct folio *folio, void *data)
 {
-	return __page_cache_add_speculative(page, count);
+	folio_get(folio);
+	folio->private = data;
+	folio_set_private(folio);
 }
 
 /**
- * attach_page_private - Attach private data to a page.
- * @page: Page to attach data to.
- * @data: Data to attach to page.
+ * folio_change_private - Change private data on a folio.
+ * @folio: Folio to change the data on.
+ * @data: Data to set on the folio.
  *
- * Attaching private data to a page increments the page's reference count.
- * The data must be detached before the page will be freed.
+ * Change the private data attached to a folio and return the old
+ * data.  The page must previously have had data attached and the data
+ * must be detached before the folio will be freed.
+ *
+ * Return: Data that was previously attached to the folio.
  */
-static inline void attach_page_private(struct page *page, void *data)
+static inline void *folio_change_private(struct folio *folio, void *data)
 {
-	get_page(page);
-	set_page_private(page, (unsigned long)data);
-	SetPagePrivate(page);
+	void *old = folio_get_private(folio);
+
+	folio->private = data;
+	return old;
 }
 
 /**
- * detach_page_private - Detach private data from a page.
- * @page: Page to detach data from.
+ * folio_detach_private - Detach private data from a folio.
+ * @folio: Folio to detach data from.
  *
- * Removes the data that was previously attached to the page and decrements
+ * Removes the data that was previously attached to the folio and decrements
  * the refcount on the page.
  *
- * Return: Data that was attached to the page.
+ * Return: Data that was attached to the folio.
  */
-static inline void *detach_page_private(struct page *page)
+static inline void *folio_detach_private(struct folio *folio)
 {
-	void *data = (void *)page_private(page);
+	void *data = folio_get_private(folio);
 
-	if (!PagePrivate(page))
+	if (!folio_test_private(folio))
 		return NULL;
-	ClearPagePrivate(page);
-	set_page_private(page, 0);
-	put_page(page);
+	folio_clear_private(folio);
+	folio->private = NULL;
+	folio_put(folio);
 
 	return data;
 }
 
+static inline void attach_page_private(struct page *page, void *data)
+{
+	folio_attach_private(page_folio(page), data);
+}
+
+static inline void *detach_page_private(struct page *page)
+{
+	return folio_detach_private(page_folio(page));
+}
+
 #ifdef CONFIG_NUMA
-extern struct page *__page_cache_alloc(gfp_t gfp);
+struct folio *filemap_alloc_folio(gfp_t gfp, unsigned int order);
 #else
-static inline struct page *__page_cache_alloc(gfp_t gfp)
+static inline struct folio *filemap_alloc_folio(gfp_t gfp, unsigned int order)
 {
-	return alloc_pages(gfp, 0);
+	return folio_alloc(gfp, order);
 }
 #endif
 
+static inline struct page *__page_cache_alloc(gfp_t gfp)
+{
+	return &filemap_alloc_folio(gfp, 0)->page;
+}
+
 static inline struct page *page_cache_alloc(struct address_space *x)
 {
 	return __page_cache_alloc(mapping_gfp_mask(x));
@@ -331,9 +508,46 @@ pgoff_t page_cache_prev_miss(struct address_space *mapping,
 #define FGP_FOR_MMAP		0x00000040
 #define FGP_HEAD		0x00000080
 #define FGP_ENTRY		0x00000100
+#define FGP_STABLE		0x00000200
 
-struct page *pagecache_get_page(struct address_space *mapping, pgoff_t offset,
-		int fgp_flags, gfp_t cache_gfp_mask);
+struct folio *__filemap_get_folio(struct address_space *mapping, pgoff_t index,
+		int fgp_flags, gfp_t gfp);
+struct page *pagecache_get_page(struct address_space *mapping, pgoff_t index,
+		int fgp_flags, gfp_t gfp);
+
+/**
+ * filemap_get_folio - Find and get a folio.
+ * @mapping: The address_space to search.
+ * @index: The page index.
+ *
+ * Looks up the page cache entry at @mapping & @index.  If a folio is
+ * present, it is returned with an increased refcount.
+ *
+ * Otherwise, %NULL is returned.
+ */
+static inline struct folio *filemap_get_folio(struct address_space *mapping,
+					pgoff_t index)
+{
+	return __filemap_get_folio(mapping, index, 0, 0);
+}
+
+/**
+ * filemap_lock_folio - Find and lock a folio.
+ * @mapping: The address_space to search.
+ * @index: The page index.
+ *
+ * Looks up the page cache entry at @mapping & @index.  If a folio is
+ * present, it is returned locked with an increased refcount.
+ *
+ * Context: May sleep.
+ * Return: A folio or %NULL if there is no folio in the cache for this
+ * index.  Will not return a shadow, swap or DAX entry.
+ */
+static inline struct folio *filemap_lock_folio(struct address_space *mapping,
+					pgoff_t index)
+{
+	return __filemap_get_folio(mapping, index, FGP_LOCK, 0);
+}
 
 /**
  * find_get_page - find and get a page reference
@@ -377,25 +591,6 @@ static inline struct page *find_lock_page(struct address_space *mapping,
 }
 
 /**
- * find_lock_head - Locate, pin and lock a pagecache page.
- * @mapping: The address_space to search.
- * @index: The page index.
- *
- * Looks up the page cache entry at @mapping & @index.  If there is a
- * page cache page, its head page is returned locked and with an increased
- * refcount.
- *
- * Context: May sleep.
- * Return: A struct page which is !PageTail, or %NULL if there is no page
- * in the cache for this index.
- */
-static inline struct page *find_lock_head(struct address_space *mapping,
-					pgoff_t index)
-{
-	return pagecache_get_page(mapping, index, FGP_LOCK | FGP_HEAD, 0);
-}
-
-/**
  * find_or_create_page - locate or add a pagecache page
  * @mapping: the page's address_space
  * @index: the page's index into the mapping
@@ -443,13 +638,71 @@ static inline struct page *grab_cache_page_nowait(struct address_space *mapping,
 			mapping_gfp_mask(mapping));
 }
 
-/* Does this page contain this index? */
-static inline bool thp_contains(struct page *head, pgoff_t index)
+#define swapcache_index(folio)	__page_file_index(&(folio)->page)
+
+/**
+ * folio_index - File index of a folio.
+ * @folio: The folio.
+ *
+ * For a folio which is either in the page cache or the swap cache,
+ * return its index within the address_space it belongs to.  If you know
+ * the page is definitely in the page cache, you can look at the folio's
+ * index directly.
+ *
+ * Return: The index (offset in units of pages) of a folio in its file.
+ */
+static inline pgoff_t folio_index(struct folio *folio)
+{
+        if (unlikely(folio_test_swapcache(folio)))
+                return swapcache_index(folio);
+        return folio->index;
+}
+
+/**
+ * folio_next_index - Get the index of the next folio.
+ * @folio: The current folio.
+ *
+ * Return: The index of the folio which follows this folio in the file.
+ */
+static inline pgoff_t folio_next_index(struct folio *folio)
+{
+	return folio->index + folio_nr_pages(folio);
+}
+
+/**
+ * folio_file_page - The page for a particular index.
+ * @folio: The folio which contains this index.
+ * @index: The index we want to look up.
+ *
+ * Sometimes after looking up a folio in the page cache, we need to
+ * obtain the specific page for an index (eg a page fault).
+ *
+ * Return: The page containing the file data for this index.
+ */
+static inline struct page *folio_file_page(struct folio *folio, pgoff_t index)
 {
 	/* HugeTLBfs indexes the page cache in units of hpage_size */
-	if (PageHuge(head))
-		return head->index == index;
-	return page_index(head) == (index & ~(thp_nr_pages(head) - 1UL));
+	if (folio_test_hugetlb(folio))
+		return &folio->page;
+	return folio_page(folio, index & (folio_nr_pages(folio) - 1));
+}
+
+/**
+ * folio_contains - Does this folio contain this index?
+ * @folio: The folio.
+ * @index: The page index within the file.
+ *
+ * Context: The caller should have the page locked in order to prevent
+ * (eg) shmem from moving the page between the page cache and swap cache
+ * and changing its index in the middle of the operation.
+ * Return: true or false.
+ */
+static inline bool folio_contains(struct folio *folio, pgoff_t index)
+{
+	/* HugeTLBfs indexes the page cache in units of hpage_size */
+	if (folio_test_hugetlb(folio))
+		return folio->index == index;
+	return index - folio_index(folio) < folio_nr_pages(folio);
 }
 
 /*
@@ -465,18 +718,9 @@ static inline struct page *find_subpage(struct page *head, pgoff_t index)
 	return head + (index & (thp_nr_pages(head) - 1));
 }
 
-unsigned find_get_entries(struct address_space *mapping, pgoff_t start,
-		pgoff_t end, struct pagevec *pvec, pgoff_t *indices);
 unsigned find_get_pages_range(struct address_space *mapping, pgoff_t *start,
 			pgoff_t end, unsigned int nr_pages,
 			struct page **pages);
-static inline unsigned find_get_pages(struct address_space *mapping,
-			pgoff_t *start, unsigned int nr_pages,
-			struct page **pages)
-{
-	return find_get_pages_range(mapping, start, (pgoff_t)-1, nr_pages,
-				    pages);
-}
 unsigned find_get_pages_contig(struct address_space *mapping, pgoff_t start,
 			       unsigned int nr_pages, struct page **pages);
 unsigned find_get_pages_range_tag(struct address_space *mapping, pgoff_t *index,
@@ -502,17 +746,23 @@ static inline struct page *grab_cache_page(struct address_space *mapping,
 	return find_or_create_page(mapping, index, mapping_gfp_mask(mapping));
 }
 
-extern struct page * read_cache_page(struct address_space *mapping,
-				pgoff_t index, filler_t *filler, void *data);
+struct folio *read_cache_folio(struct address_space *, pgoff_t index,
+		filler_t *filler, void *data);
+struct page *read_cache_page(struct address_space *, pgoff_t index,
+		filler_t *filler, void *data);
 extern struct page * read_cache_page_gfp(struct address_space *mapping,
 				pgoff_t index, gfp_t gfp_mask);
-extern int read_cache_pages(struct address_space *mapping,
-		struct list_head *pages, filler_t *filler, void *data);
 
 static inline struct page *read_mapping_page(struct address_space *mapping,
-				pgoff_t index, void *data)
+				pgoff_t index, struct file *file)
+{
+	return read_cache_page(mapping, index, NULL, file);
+}
+
+static inline struct folio *read_mapping_folio(struct address_space *mapping,
+				pgoff_t index, struct file *file)
 {
-	return read_cache_page(mapping, index, NULL, data);
+	return read_cache_folio(mapping, index, NULL, file);
 }
 
 /*
@@ -560,6 +810,38 @@ static inline loff_t page_file_offset(struct page *page)
 	return ((loff_t)page_index(page)) << PAGE_SHIFT;
 }
 
+/**
+ * folio_pos - Returns the byte position of this folio in its file.
+ * @folio: The folio.
+ */
+static inline loff_t folio_pos(struct folio *folio)
+{
+	return page_offset(&folio->page);
+}
+
+/**
+ * folio_file_pos - Returns the byte position of this folio in its file.
+ * @folio: The folio.
+ *
+ * This differs from folio_pos() for folios which belong to a swap file.
+ * NFS is the only filesystem today which needs to use folio_file_pos().
+ */
+static inline loff_t folio_file_pos(struct folio *folio)
+{
+	return page_file_offset(&folio->page);
+}
+
+/*
+ * Get the offset in PAGE_SIZE (even for hugetlb folios).
+ * (TODO: hugetlb folios should have ->index in PAGE_SIZE)
+ */
+static inline pgoff_t folio_pgoff(struct folio *folio)
+{
+	if (unlikely(folio_test_hugetlb(folio)))
+		return hugetlb_basepage_index(&folio->page);
+	return folio->index;
+}
+
 extern pgoff_t linear_hugepage_index(struct vm_area_struct *vma,
 				     unsigned long address);
 
@@ -575,13 +857,13 @@ static inline pgoff_t linear_page_index(struct vm_area_struct *vma,
 }
 
 struct wait_page_key {
-	struct page *page;
+	struct folio *folio;
 	int bit_nr;
 	int page_match;
 };
 
 struct wait_page_queue {
-	struct page *page;
+	struct folio *folio;
 	int bit_nr;
 	wait_queue_entry_t wait;
 };
@@ -589,7 +871,7 @@ struct wait_page_queue {
 static inline bool wake_page_match(struct wait_page_queue *wait_page,
 				  struct wait_page_key *key)
 {
-	if (wait_page->page != key->page)
+	if (wait_page->folio != key->folio)
 	       return false;
 	key->page_match = 1;
 
@@ -599,20 +881,31 @@ static inline bool wake_page_match(struct wait_page_queue *wait_page,
 	return true;
 }
 
-extern void __lock_page(struct page *page);
-extern int __lock_page_killable(struct page *page);
-extern int __lock_page_async(struct page *page, struct wait_page_queue *wait);
-extern int __lock_page_or_retry(struct page *page, struct mm_struct *mm,
+void __folio_lock(struct folio *folio);
+int __folio_lock_killable(struct folio *folio);
+bool __folio_lock_or_retry(struct folio *folio, struct mm_struct *mm,
 				unsigned int flags);
-extern void unlock_page(struct page *page);
+void unlock_page(struct page *page);
+void folio_unlock(struct folio *folio);
+
+static inline bool folio_trylock(struct folio *folio)
+{
+	return likely(!test_and_set_bit_lock(PG_locked, folio_flags(folio, 0)));
+}
 
 /*
  * Return true if the page was successfully locked
  */
 static inline int trylock_page(struct page *page)
 {
-	page = compound_head(page);
-	return (likely(!test_and_set_bit_lock(PG_locked, &page->flags)));
+	return folio_trylock(page_folio(page));
+}
+
+static inline void folio_lock(struct folio *folio)
+{
+	might_sleep();
+	if (!folio_trylock(folio))
+		__folio_lock(folio);
 }
 
 /*
@@ -620,38 +913,30 @@ static inline int trylock_page(struct page *page)
  */
 static inline void lock_page(struct page *page)
 {
+	struct folio *folio;
 	might_sleep();
-	if (!trylock_page(page))
-		__lock_page(page);
+
+	folio = page_folio(page);
+	if (!folio_trylock(folio))
+		__folio_lock(folio);
 }
 
-/*
- * lock_page_killable is like lock_page but can be interrupted by fatal
- * signals.  It returns 0 if it locked the page and -EINTR if it was
- * killed while waiting.
- */
-static inline int lock_page_killable(struct page *page)
+static inline int folio_lock_killable(struct folio *folio)
 {
 	might_sleep();
-	if (!trylock_page(page))
-		return __lock_page_killable(page);
+	if (!folio_trylock(folio))
+		return __folio_lock_killable(folio);
 	return 0;
 }
 
 /*
- * lock_page_async - Lock the page, unless this would block. If the page
- * is already locked, then queue a callback when the page becomes unlocked.
- * This callback can then retry the operation.
- *
- * Returns 0 if the page is locked successfully, or -EIOCBQUEUED if the page
- * was already locked and the callback defined in 'wait' was queued.
+ * lock_page_killable is like lock_page but can be interrupted by fatal
+ * signals.  It returns 0 if it locked the page and -EINTR if it was
+ * killed while waiting.
  */
-static inline int lock_page_async(struct page *page,
-				  struct wait_page_queue *wait)
+static inline int lock_page_killable(struct page *page)
 {
-	if (!trylock_page(page))
-		return __lock_page_async(page, wait);
-	return 0;
+	return folio_lock_killable(page_folio(page));
 }
 
 /*
@@ -659,145 +944,129 @@ static inline int lock_page_async(struct page *page,
  * caller indicated that it can handle a retry.
  *
  * Return value and mmap_lock implications depend on flags; see
- * __lock_page_or_retry().
+ * __folio_lock_or_retry().
  */
-static inline int lock_page_or_retry(struct page *page, struct mm_struct *mm,
+static inline bool lock_page_or_retry(struct page *page, struct mm_struct *mm,
 				     unsigned int flags)
 {
+	struct folio *folio;
 	might_sleep();
-	return trylock_page(page) || __lock_page_or_retry(page, mm, flags);
+
+	folio = page_folio(page);
+	return folio_trylock(folio) || __folio_lock_or_retry(folio, mm, flags);
 }
 
 /*
- * This is exported only for wait_on_page_locked/wait_on_page_writeback, etc.,
+ * This is exported only for folio_wait_locked/folio_wait_writeback, etc.,
  * and should not be used directly.
  */
-extern void wait_on_page_bit(struct page *page, int bit_nr);
-extern int wait_on_page_bit_killable(struct page *page, int bit_nr);
+void folio_wait_bit(struct folio *folio, int bit_nr);
+int folio_wait_bit_killable(struct folio *folio, int bit_nr);
 
 /* 
- * Wait for a page to be unlocked.
+ * Wait for a folio to be unlocked.
  *
- * This must be called with the caller "holding" the page,
- * ie with increased "page->count" so that the page won't
+ * This must be called with the caller "holding" the folio,
+ * ie with increased "page->count" so that the folio won't
  * go away during the wait..
  */
+static inline void folio_wait_locked(struct folio *folio)
+{
+	if (folio_test_locked(folio))
+		folio_wait_bit(folio, PG_locked);
+}
+
+static inline int folio_wait_locked_killable(struct folio *folio)
+{
+	if (!folio_test_locked(folio))
+		return 0;
+	return folio_wait_bit_killable(folio, PG_locked);
+}
+
 static inline void wait_on_page_locked(struct page *page)
 {
-	if (PageLocked(page))
-		wait_on_page_bit(compound_head(page), PG_locked);
+	folio_wait_locked(page_folio(page));
 }
 
 static inline int wait_on_page_locked_killable(struct page *page)
 {
-	if (!PageLocked(page))
-		return 0;
-	return wait_on_page_bit_killable(compound_head(page), PG_locked);
+	return folio_wait_locked_killable(page_folio(page));
 }
 
-int put_and_wait_on_page_locked(struct page *page, int state);
+int folio_put_wait_locked(struct folio *folio, int state);
 void wait_on_page_writeback(struct page *page);
-int wait_on_page_writeback_killable(struct page *page);
-extern void end_page_writeback(struct page *page);
+void folio_wait_writeback(struct folio *folio);
+int folio_wait_writeback_killable(struct folio *folio);
+void end_page_writeback(struct page *page);
+void folio_end_writeback(struct folio *folio);
 void wait_for_stable_page(struct page *page);
+void folio_wait_stable(struct folio *folio);
+void __folio_mark_dirty(struct folio *folio, struct address_space *, int warn);
+static inline void __set_page_dirty(struct page *page,
+		struct address_space *mapping, int warn)
+{
+	__folio_mark_dirty(page_folio(page), mapping, warn);
+}
+void folio_account_cleaned(struct folio *folio, struct bdi_writeback *wb);
+void __folio_cancel_dirty(struct folio *folio);
+static inline void folio_cancel_dirty(struct folio *folio)
+{
+	/* Avoid atomic ops, locking, etc. when not actually needed. */
+	if (folio_test_dirty(folio))
+		__folio_cancel_dirty(folio);
+}
+static inline void cancel_dirty_page(struct page *page)
+{
+	folio_cancel_dirty(page_folio(page));
+}
+bool folio_clear_dirty_for_io(struct folio *folio);
+bool clear_page_dirty_for_io(struct page *page);
+void folio_invalidate(struct folio *folio, size_t offset, size_t length);
+int __must_check folio_write_one(struct folio *folio);
+static inline int __must_check write_one_page(struct page *page)
+{
+	return folio_write_one(page_folio(page));
+}
 
-void __set_page_dirty(struct page *, struct address_space *, int warn);
 int __set_page_dirty_nobuffers(struct page *page);
-int __set_page_dirty_no_writeback(struct page *page);
+bool noop_dirty_folio(struct address_space *mapping, struct folio *folio);
 
 void page_endio(struct page *page, bool is_write, int err);
 
-/**
- * set_page_private_2 - Set PG_private_2 on a page and take a ref
- * @page: The page.
- *
- * Set the PG_private_2 flag on a page and take the reference needed for the VM
- * to handle its lifetime correctly.  This sets the flag and takes the
- * reference unconditionally, so care must be taken not to set the flag again
- * if it's already set.
- */
-static inline void set_page_private_2(struct page *page)
-{
-	page = compound_head(page);
-	get_page(page);
-	SetPagePrivate2(page);
-}
-
-void end_page_private_2(struct page *page);
-void wait_on_page_private_2(struct page *page);
-int wait_on_page_private_2_killable(struct page *page);
+void folio_end_private_2(struct folio *folio);
+void folio_wait_private_2(struct folio *folio);
+int folio_wait_private_2_killable(struct folio *folio);
 
 /*
  * Add an arbitrary waiter to a page's wait queue
  */
-extern void add_page_wait_queue(struct page *page, wait_queue_entry_t *waiter);
+void folio_add_wait_queue(struct folio *folio, wait_queue_entry_t *waiter);
 
 /*
- * Fault everything in given userspace address range in.
+ * Fault in userspace address range.
  */
-static inline int fault_in_pages_writeable(char __user *uaddr, size_t size)
-{
-	char __user *end = uaddr + size - 1;
-
-	if (unlikely(size == 0))
-		return 0;
-
-	if (unlikely(uaddr > end))
-		return -EFAULT;
-	/*
-	 * Writing zeroes into userspace here is OK, because we know that if
-	 * the zero gets there, we'll be overwriting it.
-	 */
-	do {
-		if (unlikely(__put_user(0, uaddr) != 0))
-			return -EFAULT;
-		uaddr += PAGE_SIZE;
-	} while (uaddr <= end);
-
-	/* Check whether the range spilled into the next page. */
-	if (((unsigned long)uaddr & PAGE_MASK) ==
-			((unsigned long)end & PAGE_MASK))
-		return __put_user(0, end);
-
-	return 0;
-}
-
-static inline int fault_in_pages_readable(const char __user *uaddr, size_t size)
-{
-	volatile char c;
-	const char __user *end = uaddr + size - 1;
-
-	if (unlikely(size == 0))
-		return 0;
-
-	if (unlikely(uaddr > end))
-		return -EFAULT;
-
-	do {
-		if (unlikely(__get_user(c, uaddr) != 0))
-			return -EFAULT;
-		uaddr += PAGE_SIZE;
-	} while (uaddr <= end);
-
-	/* Check whether the range spilled into the next page. */
-	if (((unsigned long)uaddr & PAGE_MASK) ==
-			((unsigned long)end & PAGE_MASK)) {
-		return __get_user(c, end);
-	}
-
-	(void)c;
-	return 0;
-}
+size_t fault_in_writeable(char __user *uaddr, size_t size);
+size_t fault_in_safe_writeable(const char __user *uaddr, size_t size);
+size_t fault_in_readable(const char __user *uaddr, size_t size);
 
 int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
-				pgoff_t index, gfp_t gfp_mask);
+		pgoff_t index, gfp_t gfp);
 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
-				pgoff_t index, gfp_t gfp_mask);
-extern void delete_from_page_cache(struct page *page);
-extern void __delete_from_page_cache(struct page *page, void *shadow);
+		pgoff_t index, gfp_t gfp);
+int filemap_add_folio(struct address_space *mapping, struct folio *folio,
+		pgoff_t index, gfp_t gfp);
+void filemap_remove_folio(struct folio *folio);
+void delete_from_page_cache(struct page *page);
+void __filemap_remove_folio(struct folio *folio, void *shadow);
+static inline void __delete_from_page_cache(struct page *page, void *shadow)
+{
+	__filemap_remove_folio(page_folio(page), shadow);
+}
 void replace_page_cache_page(struct page *old, struct page *new);
 void delete_from_page_cache_batch(struct address_space *mapping,
-				  struct pagevec *pvec);
+				  struct folio_batch *fbatch);
+int try_to_release_page(struct page *page, gfp_t gfp);
+bool filemap_release_folio(struct folio *folio, gfp_t gfp);
 loff_t mapping_seek_hole_data(struct address_space *, loff_t start, loff_t end,
 		int whence);
 
@@ -817,6 +1086,39 @@ static inline int add_to_page_cache(struct page *page,
 	return error;
 }
 
+/* Must be non-static for BPF error injection */
+int __filemap_add_folio(struct address_space *mapping, struct folio *folio,
+		pgoff_t index, gfp_t gfp, void **shadowp);
+
+bool filemap_range_has_writeback(struct address_space *mapping,
+				 loff_t start_byte, loff_t end_byte);
+
+/**
+ * filemap_range_needs_writeback - check if range potentially needs writeback
+ * @mapping:           address space within which to check
+ * @start_byte:        offset in bytes where the range starts
+ * @end_byte:          offset in bytes where the range ends (inclusive)
+ *
+ * Find at least one page in the range supplied, usually used to check if
+ * direct writing in this range will trigger a writeback. Used by O_DIRECT
+ * read/write with IOCB_NOWAIT, to see if the caller needs to do
+ * filemap_write_and_wait_range() before proceeding.
+ *
+ * Return: %true if the caller should do filemap_write_and_wait_range() before
+ * doing O_DIRECT to a page in this range, %false otherwise.
+ */
+static inline bool filemap_range_needs_writeback(struct address_space *mapping,
+						 loff_t start_byte,
+						 loff_t end_byte)
+{
+	if (!mapping->nrpages)
+		return false;
+	if (!mapping_tagged(mapping, PAGECACHE_TAG_DIRTY) &&
+	    !mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK))
+		return false;
+	return filemap_range_has_writeback(mapping, start_byte, end_byte);
+}
+
 /**
  * struct readahead_control - Describes a readahead request.
  *
@@ -856,7 +1158,7 @@ struct readahead_control {
 void page_cache_ra_unbounded(struct readahead_control *,
 		unsigned long nr_to_read, unsigned long lookahead_count);
 void page_cache_sync_ra(struct readahead_control *, unsigned long req_count);
-void page_cache_async_ra(struct readahead_control *, struct page *,
+void page_cache_async_ra(struct readahead_control *, struct folio *,
 		unsigned long req_count);
 void readahead_expand(struct readahead_control *ractl,
 		      loff_t new_start, size_t new_len);
@@ -903,36 +1205,60 @@ void page_cache_async_readahead(struct address_space *mapping,
 		struct page *page, pgoff_t index, unsigned long req_count)
 {
 	DEFINE_READAHEAD(ractl, file, ra, mapping, index);
-	page_cache_async_ra(&ractl, page, req_count);
+	page_cache_async_ra(&ractl, page_folio(page), req_count);
+}
+
+static inline struct folio *__readahead_folio(struct readahead_control *ractl)
+{
+	struct folio *folio;
+
+	BUG_ON(ractl->_batch_count > ractl->_nr_pages);
+	ractl->_nr_pages -= ractl->_batch_count;
+	ractl->_index += ractl->_batch_count;
+
+	if (!ractl->_nr_pages) {
+		ractl->_batch_count = 0;
+		return NULL;
+	}
+
+	folio = xa_load(&ractl->mapping->i_pages, ractl->_index);
+	VM_BUG_ON_FOLIO(!folio_test_locked(folio), folio);
+	ractl->_batch_count = folio_nr_pages(folio);
+
+	return folio;
 }
 
 /**
  * readahead_page - Get the next page to read.
- * @rac: The current readahead request.
+ * @ractl: The current readahead request.
  *
  * Context: The page is locked and has an elevated refcount.  The caller
  * should decreases the refcount once the page has been submitted for I/O
  * and unlock the page once all I/O to that page has completed.
  * Return: A pointer to the next page, or %NULL if we are done.
  */
-static inline struct page *readahead_page(struct readahead_control *rac)
+static inline struct page *readahead_page(struct readahead_control *ractl)
 {
-	struct page *page;
+	struct folio *folio = __readahead_folio(ractl);
 
-	BUG_ON(rac->_batch_count > rac->_nr_pages);
-	rac->_nr_pages -= rac->_batch_count;
-	rac->_index += rac->_batch_count;
-
-	if (!rac->_nr_pages) {
-		rac->_batch_count = 0;
-		return NULL;
-	}
+	return &folio->page;
+}
 
-	page = xa_load(&rac->mapping->i_pages, rac->_index);
-	VM_BUG_ON_PAGE(!PageLocked(page), page);
-	rac->_batch_count = thp_nr_pages(page);
+/**
+ * readahead_folio - Get the next folio to read.
+ * @ractl: The current readahead request.
+ *
+ * Context: The folio is locked.  The caller should unlock the folio once
+ * all I/O to that folio has completed.
+ * Return: A pointer to the next folio, or %NULL if we are done.
+ */
+static inline struct folio *readahead_folio(struct readahead_control *ractl)
+{
+	struct folio *folio = __readahead_folio(ractl);
 
-	return page;
+	if (folio)
+		folio_put(folio);
+	return folio;
 }
 
 static inline unsigned int __readahead_batch(struct readahead_control *rac,
@@ -956,16 +1282,6 @@ static inline unsigned int __readahead_batch(struct readahead_control *rac,
 		VM_BUG_ON_PAGE(PageTail(page), page);
 		array[i++] = page;
 		rac->_batch_count += thp_nr_pages(page);
-
-		/*
-		 * The page cache isn't using multi-index entries yet,
-		 * so the xas cursor needs to be manually moved to the
-		 * next index.  This can be removed once the page cache
-		 * is converted.
-		 */
-		if (PageHead(page))
-			xas_set(&xas, rac->_index + rac->_batch_count);
-
 		if (i == array_sz)
 			break;
 	}
@@ -1040,6 +1356,34 @@ static inline unsigned long dir_pages(struct inode *inode)
 }
 
 /**
+ * folio_mkwrite_check_truncate - check if folio was truncated
+ * @folio: the folio to check
+ * @inode: the inode to check the folio against
+ *
+ * Return: the number of bytes in the folio up to EOF,
+ * or -EFAULT if the folio was truncated.
+ */
+static inline ssize_t folio_mkwrite_check_truncate(struct folio *folio,
+					      struct inode *inode)
+{
+	loff_t size = i_size_read(inode);
+	pgoff_t index = size >> PAGE_SHIFT;
+	size_t offset = offset_in_folio(folio, size);
+
+	if (!folio->mapping)
+		return -EFAULT;
+
+	/* folio is wholly inside EOF */
+	if (folio_next_index(folio) - 1 < index)
+		return folio_size(folio);
+	/* folio is wholly past EOF */
+	if (folio->index > index || !offset)
+		return -EFAULT;
+	/* folio is partially inside EOF */
+	return offset;
+}
+
+/**
  * page_mkwrite_check_truncate - check if page was truncated
  * @page: the page to check
  * @inode: the inode to check the page against
@@ -1068,19 +1412,25 @@ static inline int page_mkwrite_check_truncate(struct page *page,
 }
 
 /**
- * i_blocks_per_page - How many blocks fit in this page.
+ * i_blocks_per_folio - How many blocks fit in this folio.
  * @inode: The inode which contains the blocks.
- * @page: The page (head page if the page is a THP).
+ * @folio: The folio.
  *
- * If the block size is larger than the size of this page, return zero.
+ * If the block size is larger than the size of this folio, return zero.
  *
- * Context: The caller should hold a refcount on the page to prevent it
+ * Context: The caller should hold a refcount on the folio to prevent it
  * from being split.
- * Return: The number of filesystem blocks covered by this page.
+ * Return: The number of filesystem blocks covered by this folio.
  */
 static inline
+unsigned int i_blocks_per_folio(struct inode *inode, struct folio *folio)
+{
+	return folio_size(folio) >> inode->i_blkbits;
+}
+
+static inline
 unsigned int i_blocks_per_page(struct inode *inode, struct page *page)
 {
-	return thp_size(page) >> inode->i_blkbits;
+	return i_blocks_per_folio(inode, page_folio(page));
 }
 #endif /* _LINUX_PAGEMAP_H */
diff --git a/include/linux/pagevec.h b/include/linux/pagevec.h
index 7f3f19065a9f..67b1246f136b 100644
--- a/include/linux/pagevec.h
+++ b/include/linux/pagevec.h
@@ -15,8 +15,10 @@
 #define PAGEVEC_SIZE	15
 
 struct page;
+struct folio;
 struct address_space;
 
+/* Layout must match folio_batch */
 struct pagevec {
 	unsigned char nr;
 	bool percpu_pvec_drained;
@@ -25,7 +27,6 @@ struct pagevec {
 
 void __pagevec_release(struct pagevec *pvec);
 void __pagevec_lru_add(struct pagevec *pvec);
-void pagevec_remove_exceptionals(struct pagevec *pvec);
 unsigned pagevec_lookup_range(struct pagevec *pvec,
 			      struct address_space *mapping,
 			      pgoff_t *start, pgoff_t end);
@@ -81,4 +82,69 @@ static inline void pagevec_release(struct pagevec *pvec)
 		__pagevec_release(pvec);
 }
 
+/**
+ * struct folio_batch - A collection of folios.
+ *
+ * The folio_batch is used to amortise the cost of retrieving and
+ * operating on a set of folios.  The order of folios in the batch may be
+ * significant (eg delete_from_page_cache_batch()).  Some users of the
+ * folio_batch store "exceptional" entries in it which can be removed
+ * by calling folio_batch_remove_exceptionals().
+ */
+struct folio_batch {
+	unsigned char nr;
+	bool percpu_pvec_drained;
+	struct folio *folios[PAGEVEC_SIZE];
+};
+
+/* Layout must match pagevec */
+static_assert(sizeof(struct pagevec) == sizeof(struct folio_batch));
+static_assert(offsetof(struct pagevec, pages) ==
+		offsetof(struct folio_batch, folios));
+
+/**
+ * folio_batch_init() - Initialise a batch of folios
+ * @fbatch: The folio batch.
+ *
+ * A freshly initialised folio_batch contains zero folios.
+ */
+static inline void folio_batch_init(struct folio_batch *fbatch)
+{
+	fbatch->nr = 0;
+	fbatch->percpu_pvec_drained = false;
+}
+
+static inline unsigned int folio_batch_count(struct folio_batch *fbatch)
+{
+	return fbatch->nr;
+}
+
+static inline unsigned int fbatch_space(struct folio_batch *fbatch)
+{
+	return PAGEVEC_SIZE - fbatch->nr;
+}
+
+/**
+ * folio_batch_add() - Add a folio to a batch.
+ * @fbatch: The folio batch.
+ * @folio: The folio to add.
+ *
+ * The folio is added to the end of the batch.
+ * The batch must have previously been initialised using folio_batch_init().
+ *
+ * Return: The number of slots still available.
+ */
+static inline unsigned folio_batch_add(struct folio_batch *fbatch,
+		struct folio *folio)
+{
+	fbatch->folios[fbatch->nr++] = folio;
+	return fbatch_space(fbatch);
+}
+
+static inline void folio_batch_release(struct folio_batch *fbatch)
+{
+	pagevec_release((struct pagevec *)fbatch);
+}
+
+void folio_batch_remove_exceptionals(struct folio_batch *fbatch);
 #endif /* _LINUX_PAGEVEC_H */
diff --git a/include/linux/part_stat.h b/include/linux/part_stat.h
index d2558121d48c..abeba356bc3f 100644
--- a/include/linux/part_stat.h
+++ b/include/linux/part_stat.h
@@ -2,7 +2,8 @@
 #ifndef _LINUX_PART_STAT_H
 #define _LINUX_PART_STAT_H
 
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
+#include <asm/local.h>
 
 struct disk_stats {
 	u64 nsecs[NR_STAT_GROUPS];
diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h
index f16de399d2de..078225b514d4 100644
--- a/include/linux/pci-acpi.h
+++ b/include/linux/pci-acpi.h
@@ -84,6 +84,14 @@ extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
 void acpi_pci_add_bus(struct pci_bus *bus);
 void acpi_pci_remove_bus(struct pci_bus *bus);
 
+#ifdef CONFIG_PCI
+void pci_acpi_setup(struct device *dev, struct acpi_device *adev);
+void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev);
+#else
+static inline void pci_acpi_setup(struct device *dev, struct acpi_device *adev) {}
+static inline void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev) {}
+#endif
+
 #ifdef	CONFIG_ACPI_PCI_SLOT
 void acpi_pci_slot_init(void);
 void acpi_pci_slot_enumerate(struct pci_bus *bus);
diff --git a/include/linux/pci-dma-compat.h b/include/linux/pci-dma-compat.h
deleted file mode 100644
index 249d4d7fbf18..000000000000
--- a/include/linux/pci-dma-compat.h
+++ /dev/null
@@ -1,129 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* include this file if the platform implements the dma_ DMA Mapping API
- * and wants to provide the pci_ DMA Mapping API in terms of it */
-
-#ifndef _ASM_GENERIC_PCI_DMA_COMPAT_H
-#define _ASM_GENERIC_PCI_DMA_COMPAT_H
-
-#include <linux/dma-mapping.h>
-
-/* This defines the direction arg to the DMA mapping routines. */
-#define PCI_DMA_BIDIRECTIONAL	DMA_BIDIRECTIONAL
-#define PCI_DMA_TODEVICE	DMA_TO_DEVICE
-#define PCI_DMA_FROMDEVICE	DMA_FROM_DEVICE
-#define PCI_DMA_NONE		DMA_NONE
-
-static inline void *
-pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
-		     dma_addr_t *dma_handle)
-{
-	return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC);
-}
-
-static inline void *
-pci_zalloc_consistent(struct pci_dev *hwdev, size_t size,
-		      dma_addr_t *dma_handle)
-{
-	return dma_alloc_coherent(&hwdev->dev, size, dma_handle, GFP_ATOMIC);
-}
-
-static inline void
-pci_free_consistent(struct pci_dev *hwdev, size_t size,
-		    void *vaddr, dma_addr_t dma_handle)
-{
-	dma_free_coherent(&hwdev->dev, size, vaddr, dma_handle);
-}
-
-static inline dma_addr_t
-pci_map_single(struct pci_dev *hwdev, void *ptr, size_t size, int direction)
-{
-	return dma_map_single(&hwdev->dev, ptr, size, (enum dma_data_direction)direction);
-}
-
-static inline void
-pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
-		 size_t size, int direction)
-{
-	dma_unmap_single(&hwdev->dev, dma_addr, size, (enum dma_data_direction)direction);
-}
-
-static inline dma_addr_t
-pci_map_page(struct pci_dev *hwdev, struct page *page,
-	     unsigned long offset, size_t size, int direction)
-{
-	return dma_map_page(&hwdev->dev, page, offset, size, (enum dma_data_direction)direction);
-}
-
-static inline void
-pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address,
-	       size_t size, int direction)
-{
-	dma_unmap_page(&hwdev->dev, dma_address, size, (enum dma_data_direction)direction);
-}
-
-static inline int
-pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
-	   int nents, int direction)
-{
-	return dma_map_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction);
-}
-
-static inline void
-pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
-	     int nents, int direction)
-{
-	dma_unmap_sg(&hwdev->dev, sg, nents, (enum dma_data_direction)direction);
-}
-
-static inline void
-pci_dma_sync_single_for_cpu(struct pci_dev *hwdev, dma_addr_t dma_handle,
-		    size_t size, int direction)
-{
-	dma_sync_single_for_cpu(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
-}
-
-static inline void
-pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle,
-		    size_t size, int direction)
-{
-	dma_sync_single_for_device(&hwdev->dev, dma_handle, size, (enum dma_data_direction)direction);
-}
-
-static inline void
-pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev, struct scatterlist *sg,
-		int nelems, int direction)
-{
-	dma_sync_sg_for_cpu(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
-}
-
-static inline void
-pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg,
-		int nelems, int direction)
-{
-	dma_sync_sg_for_device(&hwdev->dev, sg, nelems, (enum dma_data_direction)direction);
-}
-
-static inline int
-pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr)
-{
-	return dma_mapping_error(&pdev->dev, dma_addr);
-}
-
-#ifdef CONFIG_PCI
-static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
-{
-	return dma_set_mask(&dev->dev, mask);
-}
-
-static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
-{
-	return dma_set_coherent_mask(&dev->dev, mask);
-}
-#else
-static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
-{ return -EIO; }
-static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
-{ return -EIO; }
-#endif
-
-#endif
diff --git a/include/linux/pci.h b/include/linux/pci.h
index cd8aa6fce204..60adf42460ab 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -155,6 +155,15 @@ enum pci_interrupt_pin {
 #define PCI_NUM_INTX	4
 
 /*
+ * Reading from a device that doesn't respond typically returns ~0.  A
+ * successful read from a device may also return ~0, so you need additional
+ * information to reliably identify errors.
+ */
+#define PCI_ERROR_RESPONSE		(~0ULL)
+#define PCI_SET_ERROR_RESPONSE(val)	(*(val) = ((typeof(*(val))) PCI_ERROR_RESPONSE))
+#define PCI_POSSIBLE_ERROR(val)		((val) == ((typeof(val)) PCI_ERROR_RESPONSE))
+
+/*
  * pci_power_t values must match the bits in the Capabilities PME_Support
  * and Control/Status PowerState fields in the Power Management capability.
  */
@@ -233,6 +242,8 @@ enum pci_dev_flags {
 	PCI_DEV_FLAGS_NO_FLR_RESET = (__force pci_dev_flags_t) (1 << 10),
 	/* Don't use Relaxed Ordering for TLPs directed at this device */
 	PCI_DEV_FLAGS_NO_RELAXED_ORDERING = (__force pci_dev_flags_t) (1 << 11),
+	/* Device does honor MSI masking despite saying otherwise */
+	PCI_DEV_FLAGS_HAS_MSI_MASKING = (__force pci_dev_flags_t) (1 << 12),
 };
 
 enum pci_irq_reroute_variant {
@@ -423,7 +434,8 @@ struct pci_dev {
 	unsigned int	ats_enabled:1;		/* Address Translation Svc */
 	unsigned int	pasid_enabled:1;	/* Process Address Space ID */
 	unsigned int	pri_enabled:1;		/* Page Request Interface */
-	unsigned int	is_managed:1;
+	unsigned int	is_managed:1;		/* Managed via devres */
+	unsigned int	is_msi_managed:1;	/* MSI release via devres installed */
 	unsigned int	needs_freset:1;		/* Requires fundamental reset */
 	unsigned int	state_saved:1;
 	unsigned int	is_physfn:1;
@@ -453,6 +465,7 @@ struct pci_dev {
 	unsigned int	link_active_reporting:1;/* Device capable of reporting link active */
 	unsigned int	no_vf_scan:1;		/* Don't scan for VFs after IOV enablement */
 	unsigned int	no_command_memory:1;	/* No PCI_COMMAND_MEMORY */
+	unsigned int	rom_bar_overlap:1;	/* ROM BAR disable broken */
 	pci_dev_flags_t dev_flags;
 	atomic_t	enable_cnt;	/* pci_enable_device has been called */
 
@@ -471,7 +484,8 @@ struct pci_dev {
 	u8		ptm_granularity;
 #endif
 #ifdef CONFIG_PCI_MSI
-	const struct attribute_group **msi_irq_groups;
+	void __iomem	*msix_base;
+	raw_spinlock_t	msi_lock;
 #endif
 	struct pci_vpd	vpd;
 #ifdef CONFIG_PCIE_DPC
@@ -654,6 +668,7 @@ struct pci_bus {
 	struct bin_attribute	*legacy_io;	/* Legacy I/O for this bus */
 	struct bin_attribute	*legacy_mem;	/* Legacy mem */
 	unsigned int		is_added:1;
+	unsigned int		unsafe_warn:1;	/* warned about RW1C config write */
 };
 
 #define to_pci_bus(n)	container_of(n, struct pci_bus, dev)
@@ -900,7 +915,10 @@ struct pci_driver {
 	struct pci_dynids	dynids;
 };
 
-#define	to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
+static inline struct pci_driver *to_pci_driver(struct device_driver *drv)
+{
+    return drv ? container_of(drv, struct pci_driver, driver) : NULL;
+}
 
 /**
  * PCI_DEVICE - macro used to describe a specific PCI device
@@ -1130,6 +1148,7 @@ u16 pci_find_ext_capability(struct pci_dev *dev, int cap);
 u16 pci_find_next_ext_capability(struct pci_dev *dev, u16 pos, int cap);
 struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
 u16 pci_find_vsec_capability(struct pci_dev *dev, u16 vendor, int cap);
+u16 pci_find_dvsec_capability(struct pci_dev *dev, u16 vendor, u16 dvsec);
 
 u64 pci_get_dsn(struct pci_dev *dev);
 
@@ -1350,6 +1369,8 @@ void pci_unlock_rescan_remove(void);
 /* Vital Product Data routines */
 ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
 ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
+ssize_t pci_read_vpd_any(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
+ssize_t pci_write_vpd_any(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
 
 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
 resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx);
@@ -1498,19 +1519,8 @@ int pci_set_vga_state(struct pci_dev *pdev, bool decode,
 #define PCI_IRQ_ALL_TYPES \
 	(PCI_IRQ_LEGACY | PCI_IRQ_MSI | PCI_IRQ_MSIX)
 
-/* kmem_cache style wrapper around pci_alloc_consistent() */
-
 #include <linux/dmapool.h>
 
-#define	pci_pool dma_pool
-#define pci_pool_create(name, pdev, size, align, allocation) \
-		dma_pool_create(name, &pdev->dev, size, align, allocation)
-#define	pci_pool_destroy(pool) dma_pool_destroy(pool)
-#define	pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
-#define	pci_pool_zalloc(pool, flags, handle) \
-		dma_pool_zalloc(pool, flags, handle)
-#define	pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
-
 struct msix_entry {
 	u32	vector;	/* Kernel uses to write allocated vector */
 	u16	entry;	/* Driver uses to specify entry, OS writes */
@@ -1671,6 +1681,7 @@ void pci_cfg_access_lock(struct pci_dev *dev);
 bool pci_cfg_access_trylock(struct pci_dev *dev);
 void pci_cfg_access_unlock(struct pci_dev *dev);
 
+void pci_dev_lock(struct pci_dev *dev);
 int pci_dev_trylock(struct pci_dev *dev);
 void pci_dev_unlock(struct pci_dev *dev);
 
@@ -1777,7 +1788,10 @@ static inline struct pci_dev *pci_get_class(unsigned int class,
 					    struct pci_dev *from)
 { return NULL; }
 
-#define pci_dev_present(ids)	(0)
+
+static inline int pci_dev_present(const struct pci_device_id *ids)
+{ return 0; }
+
 #define no_pci_devices()	(1)
 #define pci_dev_put(dev)	do { } while (0)
 
@@ -2126,7 +2140,7 @@ void pcibios_disable_device(struct pci_dev *dev);
 void pcibios_set_master(struct pci_dev *dev);
 int pcibios_set_pcie_reset_state(struct pci_dev *dev,
 				 enum pcie_reset_state state);
-int pcibios_add_device(struct pci_dev *dev);
+int pcibios_device_add(struct pci_dev *dev);
 void pcibios_release_device(struct pci_dev *dev);
 #ifdef CONFIG_PCI
 void pcibios_penalize_isa_irq(int irq, int active);
@@ -2153,7 +2167,8 @@ void __iomem *pci_ioremap_wc_bar(struct pci_dev *pdev, int bar);
 #ifdef CONFIG_PCI_IOV
 int pci_iov_virtfn_bus(struct pci_dev *dev, int id);
 int pci_iov_virtfn_devfn(struct pci_dev *dev, int id);
-
+int pci_iov_vf_id(struct pci_dev *dev);
+void *pci_iov_get_pf_drvdata(struct pci_dev *dev, struct pci_driver *pf_driver);
 int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
 void pci_disable_sriov(struct pci_dev *dev);
 
@@ -2181,6 +2196,18 @@ static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id)
 {
 	return -ENOSYS;
 }
+
+static inline int pci_iov_vf_id(struct pci_dev *dev)
+{
+	return -ENOSYS;
+}
+
+static inline void *pci_iov_get_pf_drvdata(struct pci_dev *dev,
+					   struct pci_driver *pf_driver)
+{
+	return ERR_PTR(-EINVAL);
+}
+
 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
 { return -ENODEV; }
 
@@ -2446,8 +2473,7 @@ static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev)
 void pci_uevent_ers(struct pci_dev *pdev, enum  pci_ers_result err_type);
 #endif
 
-/* Provide the legacy pci_dma_* API */
-#include <linux/pci-dma-compat.h>
+#include <linux/dma-mapping.h>
 
 #define pci_printk(level, pdev, fmt, arg...) \
 	dev_printk(level, &(pdev)->dev, fmt, ##arg)
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 011f2f1ea5bb..0178823ce8c2 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -60,6 +60,8 @@
 #define PCI_CLASS_BRIDGE_EISA		0x0602
 #define PCI_CLASS_BRIDGE_MC		0x0603
 #define PCI_CLASS_BRIDGE_PCI		0x0604
+#define PCI_CLASS_BRIDGE_PCI_NORMAL		0x060400
+#define PCI_CLASS_BRIDGE_PCI_SUBTRACTIVE	0x060401
 #define PCI_CLASS_BRIDGE_PCMCIA		0x0605
 #define PCI_CLASS_BRIDGE_NUBUS		0x0606
 #define PCI_CLASS_BRIDGE_CARDBUS	0x0607
@@ -555,6 +557,7 @@
 #define PCI_DEVICE_ID_AMD_17H_M60H_DF_F3 0x144b
 #define PCI_DEVICE_ID_AMD_17H_M70H_DF_F3 0x1443
 #define PCI_DEVICE_ID_AMD_19H_DF_F3	0x1653
+#define PCI_DEVICE_ID_AMD_19H_M10H_DF_F3 0x14b0
 #define PCI_DEVICE_ID_AMD_19H_M40H_DF_F3 0x167c
 #define PCI_DEVICE_ID_AMD_19H_M50H_DF_F3 0x166d
 #define PCI_DEVICE_ID_AMD_CNB17H_F3	0x1703
@@ -1964,24 +1967,6 @@
 #define PCI_DEVICE_ID_APPLICOM_PCI2000PFB 0x0003
 
 #define PCI_VENDOR_ID_MOXA		0x1393
-#define PCI_DEVICE_ID_MOXA_RC7000	0x0001
-#define PCI_DEVICE_ID_MOXA_CP102	0x1020
-#define PCI_DEVICE_ID_MOXA_CP102UL	0x1021
-#define PCI_DEVICE_ID_MOXA_CP102U	0x1022
-#define PCI_DEVICE_ID_MOXA_C104		0x1040
-#define PCI_DEVICE_ID_MOXA_CP104U	0x1041
-#define PCI_DEVICE_ID_MOXA_CP104JU	0x1042
-#define PCI_DEVICE_ID_MOXA_CP104EL	0x1043
-#define PCI_DEVICE_ID_MOXA_CT114	0x1140
-#define PCI_DEVICE_ID_MOXA_CP114	0x1141
-#define PCI_DEVICE_ID_MOXA_CP118U	0x1180
-#define PCI_DEVICE_ID_MOXA_CP118EL	0x1181
-#define PCI_DEVICE_ID_MOXA_CP132	0x1320
-#define PCI_DEVICE_ID_MOXA_CP132U	0x1321
-#define PCI_DEVICE_ID_MOXA_CP134U	0x1340
-#define PCI_DEVICE_ID_MOXA_C168		0x1680
-#define PCI_DEVICE_ID_MOXA_CP168U	0x1681
-#define PCI_DEVICE_ID_MOXA_CP168EL	0x1682
 #define PCI_DEVICE_ID_MOXA_CP204J	0x2040
 #define PCI_DEVICE_ID_MOXA_C218		0x2180
 #define PCI_DEVICE_ID_MOXA_C320		0x3200
@@ -2546,11 +2531,16 @@
 #define PCI_DEVICE_ID_KORENIX_JETCARDF3	0x17ff
 
 #define PCI_VENDOR_ID_HUAWEI		0x19e5
+#define PCI_DEVICE_ID_HUAWEI_ZIP_VF	0xa251
+#define PCI_DEVICE_ID_HUAWEI_SEC_VF	0xa256
+#define PCI_DEVICE_ID_HUAWEI_HPRE_VF	0xa259
 
 #define PCI_VENDOR_ID_NETRONOME		0x19ee
+#define PCI_DEVICE_ID_NETRONOME_NFP3800	0x3800
 #define PCI_DEVICE_ID_NETRONOME_NFP4000	0x4000
 #define PCI_DEVICE_ID_NETRONOME_NFP5000	0x5000
 #define PCI_DEVICE_ID_NETRONOME_NFP6000	0x6000
+#define PCI_DEVICE_ID_NETRONOME_NFP3800_VF	0x3803
 #define PCI_DEVICE_ID_NETRONOME_NFP6000_VF	0x6003
 
 #define PCI_VENDOR_ID_QMI		0x1a32
@@ -2578,6 +2568,8 @@
 
 #define PCI_VENDOR_ID_HYGON		0x1d94
 
+#define PCI_VENDOR_ID_FUNGIBLE		0x1dad
+
 #define PCI_VENDOR_ID_HXT		0x1dbf
 
 #define PCI_VENDOR_ID_TEKRAM		0x1de1
@@ -2635,8 +2627,8 @@
 #define PCI_DEVICE_ID_INTEL_PXHD_0	0x0320
 #define PCI_DEVICE_ID_INTEL_PXHD_1	0x0321
 #define PCI_DEVICE_ID_INTEL_PXH_0	0x0329
-#define PCI_DEVICE_ID_INTEL_PXH_1	0x032A
-#define PCI_DEVICE_ID_INTEL_PXHV	0x032C
+#define PCI_DEVICE_ID_INTEL_PXH_1	0x032a
+#define PCI_DEVICE_ID_INTEL_PXHV	0x032c
 #define PCI_DEVICE_ID_INTEL_80332_0	0x0330
 #define PCI_DEVICE_ID_INTEL_80332_1	0x0332
 #define PCI_DEVICE_ID_INTEL_80333_0	0x0370
@@ -2654,14 +2646,14 @@
 #define PCI_DEVICE_ID_INTEL_MFD_SDIO2	0x0822
 #define PCI_DEVICE_ID_INTEL_MFD_EMMC0	0x0823
 #define PCI_DEVICE_ID_INTEL_MFD_EMMC1	0x0824
-#define PCI_DEVICE_ID_INTEL_MRST_SD2	0x084F
-#define PCI_DEVICE_ID_INTEL_QUARK_X1000_ILB	0x095E
+#define PCI_DEVICE_ID_INTEL_MRST_SD2	0x084f
+#define PCI_DEVICE_ID_INTEL_QUARK_X1000_ILB	0x095e
 #define PCI_DEVICE_ID_INTEL_I960	0x0960
 #define PCI_DEVICE_ID_INTEL_I960RM	0x0962
 #define PCI_DEVICE_ID_INTEL_CENTERTON_ILB	0x0c60
 #define PCI_DEVICE_ID_INTEL_8257X_SOL	0x1062
 #define PCI_DEVICE_ID_INTEL_82573E_SOL	0x1085
-#define PCI_DEVICE_ID_INTEL_82573L_SOL	0x108F
+#define PCI_DEVICE_ID_INTEL_82573L_SOL	0x108f
 #define PCI_DEVICE_ID_INTEL_82815_MC	0x1130
 #define PCI_DEVICE_ID_INTEL_82815_CGC	0x1132
 #define PCI_DEVICE_ID_INTEL_82092AA_0	0x1221
@@ -2755,12 +2747,6 @@
 #define PCI_DEVICE_ID_INTEL_82801EB_11	0x24db
 #define PCI_DEVICE_ID_INTEL_82801EB_12	0x24dc
 #define PCI_DEVICE_ID_INTEL_82801EB_13	0x24dd
-#define PCI_DEVICE_ID_INTEL_ESB_1	0x25a1
-#define PCI_DEVICE_ID_INTEL_ESB_2	0x25a2
-#define PCI_DEVICE_ID_INTEL_ESB_4	0x25a4
-#define PCI_DEVICE_ID_INTEL_ESB_5	0x25a6
-#define PCI_DEVICE_ID_INTEL_ESB_9	0x25ab
-#define PCI_DEVICE_ID_INTEL_ESB_10	0x25ac
 #define PCI_DEVICE_ID_INTEL_82820_HB	0x2500
 #define PCI_DEVICE_ID_INTEL_82820_UP_HB	0x2501
 #define PCI_DEVICE_ID_INTEL_82850_HB	0x2530
@@ -2775,14 +2761,15 @@
 #define PCI_DEVICE_ID_INTEL_82915G_IG	0x2582
 #define PCI_DEVICE_ID_INTEL_82915GM_HB	0x2590
 #define PCI_DEVICE_ID_INTEL_82915GM_IG	0x2592
-#define PCI_DEVICE_ID_INTEL_5000_ERR	0x25F0
-#define PCI_DEVICE_ID_INTEL_5000_FBD0	0x25F5
-#define PCI_DEVICE_ID_INTEL_5000_FBD1	0x25F6
-#define PCI_DEVICE_ID_INTEL_82945G_HB	0x2770
-#define PCI_DEVICE_ID_INTEL_82945G_IG	0x2772
-#define PCI_DEVICE_ID_INTEL_3000_HB	0x2778
-#define PCI_DEVICE_ID_INTEL_82945GM_HB	0x27A0
-#define PCI_DEVICE_ID_INTEL_82945GM_IG	0x27A2
+#define PCI_DEVICE_ID_INTEL_ESB_1	0x25a1
+#define PCI_DEVICE_ID_INTEL_ESB_2	0x25a2
+#define PCI_DEVICE_ID_INTEL_ESB_4	0x25a4
+#define PCI_DEVICE_ID_INTEL_ESB_5	0x25a6
+#define PCI_DEVICE_ID_INTEL_ESB_9	0x25ab
+#define PCI_DEVICE_ID_INTEL_ESB_10	0x25ac
+#define PCI_DEVICE_ID_INTEL_5000_ERR	0x25f0
+#define PCI_DEVICE_ID_INTEL_5000_FBD0	0x25f5
+#define PCI_DEVICE_ID_INTEL_5000_FBD1	0x25f6
 #define PCI_DEVICE_ID_INTEL_ICH6_0	0x2640
 #define PCI_DEVICE_ID_INTEL_ICH6_1	0x2641
 #define PCI_DEVICE_ID_INTEL_ICH6_2	0x2642
@@ -2794,6 +2781,11 @@
 #define PCI_DEVICE_ID_INTEL_ESB2_14	0x2698
 #define PCI_DEVICE_ID_INTEL_ESB2_17	0x269b
 #define PCI_DEVICE_ID_INTEL_ESB2_18	0x269e
+#define PCI_DEVICE_ID_INTEL_82945G_HB	0x2770
+#define PCI_DEVICE_ID_INTEL_82945G_IG	0x2772
+#define PCI_DEVICE_ID_INTEL_3000_HB	0x2778
+#define PCI_DEVICE_ID_INTEL_82945GM_HB	0x27a0
+#define PCI_DEVICE_ID_INTEL_82945GM_IG	0x27a2
 #define PCI_DEVICE_ID_INTEL_ICH7_0	0x27b8
 #define PCI_DEVICE_ID_INTEL_ICH7_1	0x27b9
 #define PCI_DEVICE_ID_INTEL_ICH7_30	0x27b0
@@ -2846,7 +2838,7 @@
 #define PCI_DEVICE_ID_INTEL_LYNNFIELD_QPI_PHY0    0x2c91
 #define PCI_DEVICE_ID_INTEL_LYNNFIELD_MCR         0x2c98
 #define PCI_DEVICE_ID_INTEL_LYNNFIELD_MC_TAD      0x2c99
-#define PCI_DEVICE_ID_INTEL_LYNNFIELD_MC_TEST     0x2c9C
+#define PCI_DEVICE_ID_INTEL_LYNNFIELD_MC_TEST     0x2c9c
 #define PCI_DEVICE_ID_INTEL_LYNNFIELD_MC_CH0_CTRL 0x2ca0
 #define PCI_DEVICE_ID_INTEL_LYNNFIELD_MC_CH0_ADDR 0x2ca1
 #define PCI_DEVICE_ID_INTEL_LYNNFIELD_MC_CH0_RANK 0x2ca2
@@ -2958,16 +2950,16 @@
 #define PCI_DEVICE_ID_INTEL_SBRIDGE_BR		0x3cf5	/* 13.6 */
 #define PCI_DEVICE_ID_INTEL_SBRIDGE_SAD1	0x3cf6	/* 12.7 */
 #define PCI_DEVICE_ID_INTEL_IOAT_SNB	0x402f
-#define PCI_DEVICE_ID_INTEL_5100_16	0x65f0
-#define PCI_DEVICE_ID_INTEL_5100_19	0x65f3
-#define PCI_DEVICE_ID_INTEL_5100_21	0x65f5
-#define PCI_DEVICE_ID_INTEL_5100_22	0x65f6
 #define PCI_DEVICE_ID_INTEL_5400_ERR	0x4030
 #define PCI_DEVICE_ID_INTEL_5400_FBD0	0x4035
 #define PCI_DEVICE_ID_INTEL_5400_FBD1	0x4036
-#define PCI_DEVICE_ID_INTEL_IOAT_SCNB	0x65ff
 #define PCI_DEVICE_ID_INTEL_EP80579_0	0x5031
 #define PCI_DEVICE_ID_INTEL_EP80579_1	0x5032
+#define PCI_DEVICE_ID_INTEL_5100_16	0x65f0
+#define PCI_DEVICE_ID_INTEL_5100_19	0x65f3
+#define PCI_DEVICE_ID_INTEL_5100_21	0x65f5
+#define PCI_DEVICE_ID_INTEL_5100_22	0x65f6
+#define PCI_DEVICE_ID_INTEL_IOAT_SCNB	0x65ff
 #define PCI_DEVICE_ID_INTEL_82371SB_0	0x7000
 #define PCI_DEVICE_ID_INTEL_82371SB_1	0x7010
 #define PCI_DEVICE_ID_INTEL_82371SB_2	0x7020
diff --git a/include/linux/pcs-lynx.h b/include/linux/pcs-lynx.h
index a6440d6ebe95..5712cc2ce775 100644
--- a/include/linux/pcs-lynx.h
+++ b/include/linux/pcs-lynx.h
@@ -9,13 +9,10 @@
 #include <linux/mdio.h>
 #include <linux/phylink.h>
 
-struct lynx_pcs {
-	struct phylink_pcs pcs;
-	struct mdio_device *mdio;
-};
+struct mdio_device *lynx_get_mdio_device(struct phylink_pcs *pcs);
 
-struct lynx_pcs *lynx_pcs_create(struct mdio_device *mdio);
+struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio);
 
-void lynx_pcs_destroy(struct lynx_pcs *pcs);
+void lynx_pcs_destroy(struct phylink_pcs *pcs);
 
 #endif /* __LINUX_PCS_LYNX_H */
diff --git a/include/linux/pcs/pcs-xpcs.h b/include/linux/pcs/pcs-xpcs.h
index add077a81b21..266eb26fb029 100644
--- a/include/linux/pcs/pcs-xpcs.h
+++ b/include/linux/pcs/pcs-xpcs.h
@@ -31,8 +31,7 @@ void xpcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
 		  phy_interface_t interface, int speed, int duplex);
 int xpcs_do_config(struct dw_xpcs *xpcs, phy_interface_t interface,
 		   unsigned int mode);
-void xpcs_validate(struct dw_xpcs *xpcs, unsigned long *supported,
-		   struct phylink_link_state *state);
+void xpcs_get_interfaces(struct dw_xpcs *xpcs, unsigned long *interfaces);
 int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns,
 		    int enable);
 struct dw_xpcs *xpcs_create(struct mdio_device *mdiodev,
diff --git a/include/linux/peci-cpu.h b/include/linux/peci-cpu.h
new file mode 100644
index 000000000000..ff8ae9c26c80
--- /dev/null
+++ b/include/linux/peci-cpu.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (c) 2021 Intel Corporation */
+
+#ifndef __LINUX_PECI_CPU_H
+#define __LINUX_PECI_CPU_H
+
+#include <linux/types.h>
+
+#include "../../arch/x86/include/asm/intel-family.h"
+
+#define PECI_PCS_PKG_ID			0  /* Package Identifier Read */
+#define  PECI_PKG_ID_CPU_ID		0x0000  /* CPUID Info */
+#define  PECI_PKG_ID_PLATFORM_ID	0x0001  /* Platform ID */
+#define  PECI_PKG_ID_DEVICE_ID		0x0002  /* Uncore Device ID */
+#define  PECI_PKG_ID_MAX_THREAD_ID	0x0003  /* Max Thread ID */
+#define  PECI_PKG_ID_MICROCODE_REV	0x0004  /* CPU Microcode Update Revision */
+#define  PECI_PKG_ID_MCA_ERROR_LOG	0x0005  /* Machine Check Status */
+#define PECI_PCS_MODULE_TEMP		9  /* Per Core DTS Temperature Read */
+#define PECI_PCS_THERMAL_MARGIN		10 /* DTS thermal margin */
+#define PECI_PCS_DDR_DIMM_TEMP		14 /* DDR DIMM Temperature */
+#define PECI_PCS_TEMP_TARGET		16 /* Temperature Target Read */
+#define PECI_PCS_TDP_UNITS		30 /* Units for power/energy registers */
+
+struct peci_device;
+
+int peci_temp_read(struct peci_device *device, s16 *temp_raw);
+
+int peci_pcs_read(struct peci_device *device, u8 index,
+		  u16 param, u32 *data);
+
+int peci_pci_local_read(struct peci_device *device, u8 bus, u8 dev,
+			u8 func, u16 reg, u32 *data);
+
+int peci_ep_pci_local_read(struct peci_device *device, u8 seg,
+			   u8 bus, u8 dev, u8 func, u16 reg, u32 *data);
+
+int peci_mmio_read(struct peci_device *device, u8 bar, u8 seg,
+		   u8 bus, u8 dev, u8 func, u64 address, u32 *data);
+
+#endif /* __LINUX_PECI_CPU_H */
diff --git a/include/linux/peci.h b/include/linux/peci.h
new file mode 100644
index 000000000000..06e6ef935297
--- /dev/null
+++ b/include/linux/peci.h
@@ -0,0 +1,112 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* Copyright (c) 2018-2021 Intel Corporation */
+
+#ifndef __LINUX_PECI_H
+#define __LINUX_PECI_H
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+
+/*
+ * Currently we don't support any PECI command over 32 bytes.
+ */
+#define PECI_REQUEST_MAX_BUF_SIZE 32
+
+struct peci_controller;
+struct peci_request;
+
+/**
+ * struct peci_controller_ops - PECI controller specific methods
+ * @xfer: PECI transfer function
+ *
+ * PECI controllers may have different hardware interfaces - the drivers
+ * implementing PECI controllers can use this structure to abstract away those
+ * differences by exposing a common interface for PECI core.
+ */
+struct peci_controller_ops {
+	int (*xfer)(struct peci_controller *controller, u8 addr, struct peci_request *req);
+};
+
+/**
+ * struct peci_controller - PECI controller
+ * @dev: device object to register PECI controller to the device model
+ * @ops: pointer to device specific controller operations
+ * @bus_lock: lock used to protect multiple callers
+ * @id: PECI controller ID
+ *
+ * PECI controllers usually connect to their drivers using non-PECI bus,
+ * such as the platform bus.
+ * Each PECI controller can communicate with one or more PECI devices.
+ */
+struct peci_controller {
+	struct device dev;
+	struct peci_controller_ops *ops;
+	struct mutex bus_lock; /* held for the duration of xfer */
+	u8 id;
+};
+
+struct peci_controller *devm_peci_controller_add(struct device *parent,
+						 struct peci_controller_ops *ops);
+
+static inline struct peci_controller *to_peci_controller(void *d)
+{
+	return container_of(d, struct peci_controller, dev);
+}
+
+/**
+ * struct peci_device - PECI device
+ * @dev: device object to register PECI device to the device model
+ * @controller: manages the bus segment hosting this PECI device
+ * @info: PECI device characteristics
+ * @info.family: device family
+ * @info.model: device model
+ * @info.peci_revision: PECI revision supported by the PECI device
+ * @info.socket_id: the socket ID represented by the PECI device
+ * @addr: address used on the PECI bus connected to the parent controller
+ * @deleted: indicates that PECI device was already deleted
+ *
+ * A peci_device identifies a single device (i.e. CPU) connected to a PECI bus.
+ * The behaviour exposed to the rest of the system is defined by the PECI driver
+ * managing the device.
+ */
+struct peci_device {
+	struct device dev;
+	struct {
+		u16 family;
+		u8 model;
+		u8 peci_revision;
+		u8 socket_id;
+	} info;
+	u8 addr;
+	bool deleted;
+};
+
+static inline struct peci_device *to_peci_device(struct device *d)
+{
+	return container_of(d, struct peci_device, dev);
+}
+
+/**
+ * struct peci_request - PECI request
+ * @device: PECI device to which the request is sent
+ * @tx: TX buffer specific data
+ * @tx.buf: TX buffer
+ * @tx.len: transfer data length in bytes
+ * @rx: RX buffer specific data
+ * @rx.buf: RX buffer
+ * @rx.len: received data length in bytes
+ *
+ * A peci_request represents a request issued by PECI originator (TX) and
+ * a response received from PECI responder (RX).
+ */
+struct peci_request {
+	struct peci_device *device;
+	struct {
+		u8 buf[PECI_REQUEST_MAX_BUF_SIZE];
+		u8 len;
+	} rx, tx;
+};
+
+#endif /* __LINUX_PECI_H */
diff --git a/include/linux/percpu-refcount.h b/include/linux/percpu-refcount.h
index ae16a9856305..d73a1c08c3e3 100644
--- a/include/linux/percpu-refcount.h
+++ b/include/linux/percpu-refcount.h
@@ -51,9 +51,9 @@
 #define _LINUX_PERCPU_REFCOUNT_H
 
 #include <linux/atomic.h>
-#include <linux/kernel.h>
 #include <linux/percpu.h>
 #include <linux/rcupdate.h>
+#include <linux/types.h>
 #include <linux/gfp.h>
 
 struct percpu_ref;
@@ -267,6 +267,28 @@ static inline bool percpu_ref_tryget(struct percpu_ref *ref)
 }
 
 /**
+ * percpu_ref_tryget_live_rcu - same as percpu_ref_tryget_live() but the
+ * caller is responsible for taking RCU.
+ *
+ * This function is safe to call as long as @ref is between init and exit.
+ */
+static inline bool percpu_ref_tryget_live_rcu(struct percpu_ref *ref)
+{
+	unsigned long __percpu *percpu_count;
+	bool ret = false;
+
+	WARN_ON_ONCE(!rcu_read_lock_held());
+
+	if (likely(__ref_is_percpu(ref, &percpu_count))) {
+		this_cpu_inc(*percpu_count);
+		ret = true;
+	} else if (!(ref->percpu_count_ptr & __PERCPU_REF_DEAD)) {
+		ret = atomic_long_inc_not_zero(&ref->data->count);
+	}
+	return ret;
+}
+
+/**
  * percpu_ref_tryget_live - try to increment a live percpu refcount
  * @ref: percpu_ref to try-get
  *
@@ -283,20 +305,11 @@ static inline bool percpu_ref_tryget(struct percpu_ref *ref)
  */
 static inline bool percpu_ref_tryget_live(struct percpu_ref *ref)
 {
-	unsigned long __percpu *percpu_count;
 	bool ret = false;
 
 	rcu_read_lock();
-
-	if (__ref_is_percpu(ref, &percpu_count)) {
-		this_cpu_inc(*percpu_count);
-		ret = true;
-	} else if (!(ref->percpu_count_ptr & __PERCPU_REF_DEAD)) {
-		ret = atomic_long_inc_not_zero(&ref->data->count);
-	}
-
+	ret = percpu_ref_tryget_live_rcu(ref);
 	rcu_read_unlock();
-
 	return ret;
 }
 
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 5e76af742c80..f1ec5ad1351c 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -6,7 +6,6 @@
 #include <linux/preempt.h>
 #include <linux/smp.h>
 #include <linux/cpumask.h>
-#include <linux/printk.h>
 #include <linux/pfn.h>
 #include <linux/init.h>
 
@@ -95,10 +94,7 @@ extern const char * const pcpu_fc_names[PCPU_FC_NR];
 
 extern enum pcpu_fc pcpu_chosen_fc;
 
-typedef void * (*pcpu_fc_alloc_fn_t)(unsigned int cpu, size_t size,
-				     size_t align);
-typedef void (*pcpu_fc_free_fn_t)(void *ptr, size_t size);
-typedef void (*pcpu_fc_populate_pte_fn_t)(unsigned long addr);
+typedef int (pcpu_fc_cpu_to_node_fn_t)(int cpu);
 typedef int (pcpu_fc_cpu_distance_fn_t)(unsigned int from, unsigned int to);
 
 extern struct pcpu_alloc_info * __init pcpu_alloc_alloc_info(int nr_groups,
@@ -112,18 +108,16 @@ extern void __init pcpu_setup_first_chunk(const struct pcpu_alloc_info *ai,
 extern int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
 				size_t atom_size,
 				pcpu_fc_cpu_distance_fn_t cpu_distance_fn,
-				pcpu_fc_alloc_fn_t alloc_fn,
-				pcpu_fc_free_fn_t free_fn);
+				pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn);
 #endif
 
 #ifdef CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK
+void __init pcpu_populate_pte(unsigned long addr);
 extern int __init pcpu_page_first_chunk(size_t reserved_size,
-				pcpu_fc_alloc_fn_t alloc_fn,
-				pcpu_fc_free_fn_t free_fn,
-				pcpu_fc_populate_pte_fn_t populate_pte_fn);
+				pcpu_fc_cpu_to_node_fn_t cpu_to_nd_fn);
 #endif
 
-extern void __percpu *__alloc_reserved_percpu(size_t size, size_t align);
+extern void __percpu *__alloc_reserved_percpu(size_t size, size_t align) __alloc_size(1);
 extern bool __is_kernel_percpu_address(unsigned long addr, unsigned long *can_addr);
 extern bool is_kernel_percpu_address(unsigned long addr);
 
@@ -131,8 +125,8 @@ extern bool is_kernel_percpu_address(unsigned long addr);
 extern void __init setup_per_cpu_areas(void);
 #endif
 
-extern void __percpu *__alloc_percpu_gfp(size_t size, size_t align, gfp_t gfp);
-extern void __percpu *__alloc_percpu(size_t size, size_t align);
+extern void __percpu *__alloc_percpu_gfp(size_t size, size_t align, gfp_t gfp) __alloc_size(1);
+extern void __percpu *__alloc_percpu(size_t size, size_t align) __alloc_size(1);
 extern void free_percpu(void __percpu *__pdata);
 extern phys_addr_t per_cpu_ptr_to_phys(void *addr);
 
diff --git a/include/linux/perf/arm_pmu.h b/include/linux/perf/arm_pmu.h
index 2512e2f9cd4e..0407a38b470a 100644
--- a/include/linux/perf/arm_pmu.h
+++ b/include/linux/perf/arm_pmu.h
@@ -26,6 +26,8 @@
  */
 /* Event uses a 64bit counter */
 #define ARMPMU_EVT_64BIT		1
+/* Event uses a 47bit counter */
+#define ARMPMU_EVT_47BIT		2
 
 #define HW_OP_UNSUPPORTED		0xFFFF
 #define C(_x)				PERF_COUNT_HW_CACHE_##_x
diff --git a/include/linux/perf/riscv_pmu.h b/include/linux/perf/riscv_pmu.h
new file mode 100644
index 000000000000..46f9b6fe306e
--- /dev/null
+++ b/include/linux/perf/riscv_pmu.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 SiFive
+ * Copyright (C) 2018 Andes Technology Corporation
+ * Copyright (C) 2021 Western Digital Corporation or its affiliates.
+ *
+ */
+
+#ifndef _ASM_RISCV_PERF_EVENT_H
+#define _ASM_RISCV_PERF_EVENT_H
+
+#include <linux/perf_event.h>
+#include <linux/ptrace.h>
+#include <linux/interrupt.h>
+
+#ifdef CONFIG_RISCV_PMU
+
+/*
+ * The RISCV_MAX_COUNTERS parameter should be specified.
+ */
+
+#define RISCV_MAX_COUNTERS	64
+#define RISCV_OP_UNSUPP		(-EOPNOTSUPP)
+#define RISCV_PMU_PDEV_NAME	"riscv-pmu"
+#define RISCV_PMU_LEGACY_PDEV_NAME	"riscv-pmu-legacy"
+
+#define RISCV_PMU_STOP_FLAG_RESET 1
+
+struct cpu_hw_events {
+	/* currently enabled events */
+	int			n_events;
+	/* Counter overflow interrupt */
+	int		irq;
+	/* currently enabled events */
+	struct perf_event	*events[RISCV_MAX_COUNTERS];
+	/* currently enabled hardware counters */
+	DECLARE_BITMAP(used_hw_ctrs, RISCV_MAX_COUNTERS);
+	/* currently enabled firmware counters */
+	DECLARE_BITMAP(used_fw_ctrs, RISCV_MAX_COUNTERS);
+};
+
+struct riscv_pmu {
+	struct pmu	pmu;
+	char		*name;
+
+	irqreturn_t	(*handle_irq)(int irq_num, void *dev);
+
+	int		num_counters;
+	u64		(*ctr_read)(struct perf_event *event);
+	int		(*ctr_get_idx)(struct perf_event *event);
+	int		(*ctr_get_width)(int idx);
+	void		(*ctr_clear_idx)(struct perf_event *event);
+	void		(*ctr_start)(struct perf_event *event, u64 init_val);
+	void		(*ctr_stop)(struct perf_event *event, unsigned long flag);
+	int		(*event_map)(struct perf_event *event, u64 *config);
+
+	struct cpu_hw_events	__percpu *hw_events;
+	struct hlist_node	node;
+};
+
+#define to_riscv_pmu(p) (container_of(p, struct riscv_pmu, pmu))
+unsigned long riscv_pmu_ctr_read_csr(unsigned long csr);
+int riscv_pmu_event_set_period(struct perf_event *event);
+uint64_t riscv_pmu_ctr_get_width_mask(struct perf_event *event);
+u64 riscv_pmu_event_update(struct perf_event *event);
+#ifdef CONFIG_RISCV_PMU_LEGACY
+void riscv_pmu_legacy_skip_init(void);
+#else
+static inline void riscv_pmu_legacy_skip_init(void) {};
+#endif
+struct riscv_pmu *riscv_pmu_alloc(void);
+
+#endif /* CONFIG_RISCV_PMU */
+
+#endif /* _ASM_RISCV_PERF_EVENT_H */
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 9b60bb89d86a..af97dd427501 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -26,11 +26,13 @@
 # include <asm/local64.h>
 #endif
 
+#define PERF_GUEST_ACTIVE	0x01
+#define PERF_GUEST_USER	0x02
+
 struct perf_guest_info_callbacks {
-	int				(*is_in_guest)(void);
-	int				(*is_user_mode)(void);
-	unsigned long			(*get_guest_ip)(void);
-	void				(*handle_intel_pt_intr)(void);
+	unsigned int			(*state)(void);
+	unsigned long			(*get_ip)(void);
+	unsigned int			(*handle_intel_pt_intr)(void);
 };
 
 #ifdef CONFIG_HAVE_HW_BREAKPOINT
@@ -57,6 +59,7 @@ struct perf_guest_info_callbacks {
 #include <linux/cgroup.h>
 #include <linux/refcount.h>
 #include <linux/security.h>
+#include <linux/static_call.h>
 #include <asm/local.h>
 
 struct perf_callchain_entry {
@@ -129,6 +132,15 @@ struct hw_perf_event_extra {
 };
 
 /**
+ * hw_perf_event::flag values
+ *
+ * PERF_EVENT_FLAG_ARCH bits are reserved for architecture-specific
+ * usage.
+ */
+#define PERF_EVENT_FLAG_ARCH			0x0000ffff
+#define PERF_EVENT_FLAG_USER_READ_CNT		0x80000000
+
+/**
  * struct hw_perf_event - performance event hardware details:
  */
 struct hw_perf_event {
@@ -610,6 +622,7 @@ struct swevent_hlist {
 #define PERF_ATTACH_SCHED_CB	0x20
 #define PERF_ATTACH_CHILD	0x40
 
+struct bpf_prog;
 struct perf_cgroup;
 struct perf_buffer;
 
@@ -680,18 +693,6 @@ struct perf_event {
 	u64				total_time_running;
 	u64				tstamp;
 
-	/*
-	 * timestamp shadows the actual context timing but it can
-	 * be safely used in NMI interrupt context. It reflects the
-	 * context time as it was when the event was last scheduled in,
-	 * or when ctx_sched_in failed to schedule the event because we
-	 * run out of PMC.
-	 *
-	 * ctx_time already accounts for ctx->timestamp. Therefore to
-	 * compute ctx_time for a sample, simply add perf_clock().
-	 */
-	u64				shadow_ctx_time;
-
 	struct perf_event_attr		attr;
 	u16				header_size;
 	u16				id_header_size;
@@ -821,6 +822,7 @@ struct perf_event_context {
 
 	int				nr_events;
 	int				nr_active;
+	int				nr_user;
 	int				is_active;
 	int				nr_stat;
 	int				nr_freq;
@@ -838,6 +840,7 @@ struct perf_event_context {
 	 */
 	u64				time;
 	u64				timestamp;
+	u64				timeoffset;
 
 	/*
 	 * These fields let us detect when two contexts have both
@@ -861,7 +864,7 @@ struct perf_event_context {
 #define PERF_NR_CONTEXTS	4
 
 /**
- * struct perf_event_cpu_context - per cpu event context structure
+ * struct perf_cpu_context - per cpu event context structure
  */
 struct perf_cpu_context {
 	struct perf_event_context	ctx;
@@ -920,6 +923,8 @@ struct bpf_perf_event_data_kern {
 struct perf_cgroup_info {
 	u64				time;
 	u64				timestamp;
+	u64				timeoffset;
+	int				active;
 };
 
 struct perf_cgroup {
@@ -1239,9 +1244,32 @@ extern void perf_event_bpf_event(struct bpf_prog *prog,
 				 enum perf_bpf_event_type type,
 				 u16 flags);
 
-extern struct perf_guest_info_callbacks *perf_guest_cbs;
-extern int perf_register_guest_info_callbacks(struct perf_guest_info_callbacks *callbacks);
-extern int perf_unregister_guest_info_callbacks(struct perf_guest_info_callbacks *callbacks);
+#ifdef CONFIG_GUEST_PERF_EVENTS
+extern struct perf_guest_info_callbacks __rcu *perf_guest_cbs;
+
+DECLARE_STATIC_CALL(__perf_guest_state, *perf_guest_cbs->state);
+DECLARE_STATIC_CALL(__perf_guest_get_ip, *perf_guest_cbs->get_ip);
+DECLARE_STATIC_CALL(__perf_guest_handle_intel_pt_intr, *perf_guest_cbs->handle_intel_pt_intr);
+
+static inline unsigned int perf_guest_state(void)
+{
+	return static_call(__perf_guest_state)();
+}
+static inline unsigned long perf_guest_get_ip(void)
+{
+	return static_call(__perf_guest_get_ip)();
+}
+static inline unsigned int perf_guest_handle_intel_pt_intr(void)
+{
+	return static_call(__perf_guest_handle_intel_pt_intr)();
+}
+extern void perf_register_guest_info_callbacks(struct perf_guest_info_callbacks *cbs);
+extern void perf_unregister_guest_info_callbacks(struct perf_guest_info_callbacks *cbs);
+#else
+static inline unsigned int perf_guest_state(void)		 { return 0; }
+static inline unsigned long perf_guest_get_ip(void)		 { return 0; }
+static inline unsigned int perf_guest_handle_intel_pt_intr(void) { return 0; }
+#endif /* CONFIG_GUEST_PERF_EVENTS */
 
 extern void perf_event_exec(void);
 extern void perf_event_comm(struct task_struct *tsk, bool exec);
@@ -1400,6 +1428,7 @@ perf_event_addr_filters(struct perf_event *event)
 }
 
 extern void perf_event_addr_filters_sync(struct perf_event *event);
+extern void perf_report_aux_output_id(struct perf_event *event, u64 hw_id);
 
 extern int perf_output_begin(struct perf_output_handle *handle,
 			     struct perf_sample_data *data,
@@ -1484,11 +1513,6 @@ perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr)	{ }
 static inline void
 perf_bp_event(struct perf_event *event, void *data)			{ }
 
-static inline int perf_register_guest_info_callbacks
-(struct perf_guest_info_callbacks *callbacks)				{ return 0; }
-static inline int perf_unregister_guest_info_callbacks
-(struct perf_guest_info_callbacks *callbacks)				{ return 0; }
-
 static inline void perf_event_mmap(struct vm_area_struct *vma)		{ }
 
 typedef int (perf_ksymbol_get_name_f)(char *name, int name_len, void *data);
@@ -1614,4 +1638,26 @@ extern void __weak arch_perf_update_userpage(struct perf_event *event,
 extern __weak u64 arch_perf_get_page_size(struct mm_struct *mm, unsigned long addr);
 #endif
 
+/*
+ * Snapshot branch stack on software events.
+ *
+ * Branch stack can be very useful in understanding software events. For
+ * example, when a long function, e.g. sys_perf_event_open, returns an
+ * errno, it is not obvious why the function failed. Branch stack could
+ * provide very helpful information in this type of scenarios.
+ *
+ * On software event, it is necessary to stop the hardware branch recorder
+ * fast. Otherwise, the hardware register/buffer will be flushed with
+ * entries of the triggering event. Therefore, static call is used to
+ * stop the hardware recorder.
+ */
+
+/*
+ * cnt is the number of entries allocated for entries.
+ * Return number of entries copied to .
+ */
+typedef int (perf_snapshot_branch_stack_t)(struct perf_branch_entry *entries,
+					   unsigned int cnt);
+DECLARE_STATIC_CALL(perf_snapshot_branch_stack, perf_snapshot_branch_stack_t);
+
 #endif /* _LINUX_PERF_EVENT_H */
diff --git a/include/linux/perf_event_api.h b/include/linux/perf_event_api.h
new file mode 100644
index 000000000000..c2fd6048b790
--- /dev/null
+++ b/include/linux/perf_event_api.h
@@ -0,0 +1 @@
+#include <linux/perf_event.h>
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index e24d2c992b11..f4f4077b97aa 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -62,6 +62,7 @@ static inline unsigned long pte_index(unsigned long address)
 {
 	return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
 }
+#define pte_index pte_index
 
 #ifndef pmd_index
 static inline unsigned long pmd_index(unsigned long address)
@@ -258,6 +259,14 @@ static inline int pmdp_clear_flush_young(struct vm_area_struct *vma,
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 #endif
 
+#ifndef __HAVE_ARCH_PTEP_CLEAR
+static inline void ptep_clear(struct mm_struct *mm, unsigned long addr,
+			      pte_t *ptep)
+{
+	pte_clear(mm, addr, ptep);
+}
+#endif
+
 #ifndef __HAVE_ARCH_PTEP_GET_AND_CLEAR
 static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
 				       unsigned long address,
diff --git a/include/linux/pgtable_api.h b/include/linux/pgtable_api.h
new file mode 100644
index 000000000000..ff367a4ba8c4
--- /dev/null
+++ b/include/linux/pgtable_api.h
@@ -0,0 +1 @@
+#include <linux/pgtable.h>
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 736e1d1a47c4..36ca2b5c2253 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -87,8 +87,8 @@ extern const int phy_10gbit_features_array[1];
  *
  * @PHY_INTERFACE_MODE_NA: Not Applicable - don't touch
  * @PHY_INTERFACE_MODE_INTERNAL: No interface, MAC and PHY combined
- * @PHY_INTERFACE_MODE_MII: Median-independent interface
- * @PHY_INTERFACE_MODE_GMII: Gigabit median-independent interface
+ * @PHY_INTERFACE_MODE_MII: Media-independent interface
+ * @PHY_INTERFACE_MODE_GMII: Gigabit media-independent interface
  * @PHY_INTERFACE_MODE_SGMII: Serial gigabit media-independent interface
  * @PHY_INTERFACE_MODE_TBI: Ten Bit Interface
  * @PHY_INTERFACE_MODE_REVMII: Reverse Media Independent Interface
@@ -99,7 +99,7 @@ extern const int phy_10gbit_features_array[1];
  * @PHY_INTERFACE_MODE_RGMII_RXID: RGMII with Internal RX delay
  * @PHY_INTERFACE_MODE_RGMII_TXID: RGMII with Internal RX delay
  * @PHY_INTERFACE_MODE_RTBI: Reduced TBI
- * @PHY_INTERFACE_MODE_SMII: ??? MII
+ * @PHY_INTERFACE_MODE_SMII: Serial MII
  * @PHY_INTERFACE_MODE_XGMII: 10 gigabit media-independent interface
  * @PHY_INTERFACE_MODE_XLGMII:40 gigabit media-independent interface
  * @PHY_INTERFACE_MODE_MOCA: Multimedia over Coax
@@ -155,6 +155,40 @@ typedef enum {
 	PHY_INTERFACE_MODE_MAX,
 } phy_interface_t;
 
+/* PHY interface mode bitmap handling */
+#define DECLARE_PHY_INTERFACE_MASK(name) \
+	DECLARE_BITMAP(name, PHY_INTERFACE_MODE_MAX)
+
+static inline void phy_interface_zero(unsigned long *intf)
+{
+	bitmap_zero(intf, PHY_INTERFACE_MODE_MAX);
+}
+
+static inline bool phy_interface_empty(const unsigned long *intf)
+{
+	return bitmap_empty(intf, PHY_INTERFACE_MODE_MAX);
+}
+
+static inline void phy_interface_and(unsigned long *dst, const unsigned long *a,
+				     const unsigned long *b)
+{
+	bitmap_and(dst, a, b, PHY_INTERFACE_MODE_MAX);
+}
+
+static inline void phy_interface_or(unsigned long *dst, const unsigned long *a,
+				    const unsigned long *b)
+{
+	bitmap_or(dst, a, b, PHY_INTERFACE_MODE_MAX);
+}
+
+static inline void phy_interface_set_rgmii(unsigned long *intf)
+{
+	__set_bit(PHY_INTERFACE_MODE_RGMII, intf);
+	__set_bit(PHY_INTERFACE_MODE_RGMII_ID, intf);
+	__set_bit(PHY_INTERFACE_MODE_RGMII_RXID, intf);
+	__set_bit(PHY_INTERFACE_MODE_RGMII_TXID, intf);
+}
+
 /*
  * phy_supported_speeds - return all speeds currently supported by a PHY device
  */
@@ -504,11 +538,12 @@ struct macsec_ops;
  * @mac_managed_pm: Set true if MAC driver takes of suspending/resuming PHY
  * @state: State of the PHY for management purposes
  * @dev_flags: Device-specific flags used by the PHY driver.
- *		Bits [15:0] are free to use by the PHY driver to communicate
- *			    driver specific behavior.
- *		Bits [23:16] are currently reserved for future use.
- *		Bits [31:24] are reserved for defining generic
- *			     PHY driver behavior.
+ *
+ *      - Bits [15:0] are free to use by the PHY driver to communicate
+ *        driver specific behavior.
+ *      - Bits [23:16] are currently reserved for future use.
+ *      - Bits [31:24] are reserved for defining generic
+ *        PHY driver behavior.
  * @irq: IRQ number of the PHY's interrupt (-1 if none)
  * @phy_timer: The timer for handling the state machine
  * @phylink: Pointer to phylink instance for this PHY
@@ -1543,6 +1578,7 @@ int genphy_update_link(struct phy_device *phydev);
 int genphy_read_lpa(struct phy_device *phydev);
 int genphy_read_status_fixed(struct phy_device *phydev);
 int genphy_read_status(struct phy_device *phydev);
+int genphy_read_master_slave(struct phy_device *phydev);
 int genphy_suspend(struct phy_device *phydev);
 int genphy_resume(struct phy_device *phydev);
 int genphy_loopback(struct phy_device *phydev, bool enable);
@@ -1584,6 +1620,7 @@ int genphy_c45_config_aneg(struct phy_device *phydev);
 int genphy_c45_loopback(struct phy_device *phydev, bool enable);
 int genphy_c45_pma_resume(struct phy_device *phydev);
 int genphy_c45_pma_suspend(struct phy_device *phydev);
+int genphy_c45_fast_retrain(struct phy_device *phydev, bool enable);
 
 /* Generic C45 PHY driver */
 extern struct phy_driver genphy_c45_driver;
@@ -1625,7 +1662,7 @@ int phy_disable_interrupts(struct phy_device *phydev);
 void phy_request_interrupt(struct phy_device *phydev);
 void phy_free_interrupt(struct phy_device *phydev);
 void phy_print_status(struct phy_device *phydev);
-int phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
+void phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
 void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode);
 void phy_advertise_supported(struct phy_device *phydev);
 void phy_support_sym_pause(struct phy_device *phydev);
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index 237291196ce2..223781622b33 100644
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -20,6 +20,29 @@ enum {
 	MLO_AN_PHY = 0,	/* Conventional PHY */
 	MLO_AN_FIXED,	/* Fixed-link mode */
 	MLO_AN_INBAND,	/* In-band protocol */
+
+	MAC_SYM_PAUSE	= BIT(0),
+	MAC_ASYM_PAUSE	= BIT(1),
+	MAC_10HD	= BIT(2),
+	MAC_10FD	= BIT(3),
+	MAC_10		= MAC_10HD | MAC_10FD,
+	MAC_100HD	= BIT(4),
+	MAC_100FD	= BIT(5),
+	MAC_100		= MAC_100HD | MAC_100FD,
+	MAC_1000HD	= BIT(6),
+	MAC_1000FD	= BIT(7),
+	MAC_1000	= MAC_1000HD | MAC_1000FD,
+	MAC_2500FD	= BIT(8),
+	MAC_5000FD	= BIT(9),
+	MAC_10000FD	= BIT(10),
+	MAC_20000FD	= BIT(11),
+	MAC_25000FD	= BIT(12),
+	MAC_40000FD	= BIT(13),
+	MAC_50000FD	= BIT(14),
+	MAC_56000FD	= BIT(15),
+	MAC_100000FD	= BIT(16),
+	MAC_200000FD	= BIT(17),
+	MAC_400000FD	= BIT(18),
 };
 
 static inline bool phylink_autoneg_inband(unsigned int mode)
@@ -61,26 +84,33 @@ enum phylink_op_type {
  * struct phylink_config - PHYLINK configuration structure
  * @dev: a pointer to a struct device associated with the MAC
  * @type: operation type of PHYLINK instance
- * @pcs_poll: MAC PCS cannot provide link change interrupt
+ * @legacy_pre_march2020: driver has not been updated for March 2020 updates
+ *	(See commit 7cceb599d15d ("net: phylink: avoid mac_config calls")
  * @poll_fixed_state: if true, starts link_poll,
  *		      if MAC link is at %MLO_AN_FIXED mode.
  * @ovr_an_inband: if true, override PCS to MLO_AN_INBAND
  * @get_fixed_state: callback to execute to determine the fixed link state,
  *		     if MAC link is at %MLO_AN_FIXED mode.
+ * @supported_interfaces: bitmap describing which PHY_INTERFACE_MODE_xxx
+ *                        are supported by the MAC/PCS.
+ * @mac_capabilities: MAC pause/speed/duplex capabilities.
  */
 struct phylink_config {
 	struct device *dev;
 	enum phylink_op_type type;
-	bool pcs_poll;
+	bool legacy_pre_march2020;
 	bool poll_fixed_state;
 	bool ovr_an_inband;
 	void (*get_fixed_state)(struct phylink_config *config,
 				struct phylink_link_state *state);
+	DECLARE_PHY_INTERFACE_MASK(supported_interfaces);
+	unsigned long mac_capabilities;
 };
 
 /**
  * struct phylink_mac_ops - MAC operations structure.
  * @validate: Validate and update the link configuration.
+ * @mac_select_pcs: Select a PCS for the interface mode.
  * @mac_pcs_get_state: Read the current link state from the hardware.
  * @mac_prepare: prepare for a major reconfiguration of the interface.
  * @mac_config: configure the MAC for the selected mode and state.
@@ -95,6 +125,8 @@ struct phylink_mac_ops {
 	void (*validate)(struct phylink_config *config,
 			 unsigned long *supported,
 			 struct phylink_link_state *state);
+	struct phylink_pcs *(*mac_select_pcs)(struct phylink_config *config,
+					      phy_interface_t interface);
 	void (*mac_pcs_get_state)(struct phylink_config *config,
 				  struct phylink_link_state *state);
 	int (*mac_prepare)(struct phylink_config *config, unsigned int mode,
@@ -133,14 +165,35 @@ struct phylink_mac_ops {
  * based on @state->advertising and/or @state->speed and update
  * @state->interface accordingly. See phylink_helper_basex_speed().
  *
- * When @state->interface is %PHY_INTERFACE_MODE_NA, phylink expects the
- * MAC driver to return all supported link modes.
+ * When @config->supported_interfaces has been set, phylink will iterate
+ * over the supported interfaces to determine the full capability of the
+ * MAC. The validation function must not print errors if @state->interface
+ * is set to an unexpected value.
+ *
+ * When @config->supported_interfaces is empty, phylink will call this
+ * function with @state->interface set to %PHY_INTERFACE_MODE_NA, and
+ * expects the MAC driver to return all supported link modes.
  *
  * If the @state->interface mode is not supported, then the @supported
  * mask must be cleared.
  */
 void validate(struct phylink_config *config, unsigned long *supported,
 	      struct phylink_link_state *state);
+/**
+ * mac_select_pcs: Select a PCS for the interface mode.
+ * @config: a pointer to a &struct phylink_config.
+ * @interface: PHY interface mode for PCS
+ *
+ * Return the &struct phylink_pcs for the specified interface mode, or
+ * NULL if none is required, or an error pointer on error.
+ *
+ * This must not modify any state. It is used to query which PCS should
+ * be used. Phylink will use this during validation to ensure that the
+ * configuration is valid, and when setting a configuration to internally
+ * set the PCS that will be used.
+ */
+struct phylink_pcs *mac_select_pcs(struct phylink_config *config,
+				   phy_interface_t interface);
 
 /**
  * mac_pcs_get_state() - Read the current inband link state from the hardware
@@ -153,6 +206,10 @@ void validate(struct phylink_config *config, unsigned long *supported,
  * negotiation completion state in @state->an_complete, and link up state
  * in @state->link. If possible, @state->lp_advertising should also be
  * populated.
+ *
+ * Note: This is a legacy method. This function will not be called unless
+ * legacy_pre_march2020 is set in &struct phylink_config and there is no
+ * PCS attached.
  */
 void mac_pcs_get_state(struct phylink_config *config,
 		       struct phylink_link_state *state);
@@ -193,6 +250,15 @@ int mac_prepare(struct phylink_config *config, unsigned int mode,
  * guaranteed to be correct, and so any mac_config() implementation must
  * never reference these fields.
  *
+ * Note: For legacy March 2020 drivers (drivers with legacy_pre_march2020 set
+ * in their &phylnk_config and which don't have a PCS), this function will be
+ * called on each link up event, and to also change the in-band advert. For
+ * non-legacy drivers, it will only be called to reconfigure the MAC for a
+ * "major" change in e.g. interface mode. It will not be called for changes
+ * in speed, duplex or pause modes or to change the in-band advertisement.
+ * In any case, it is strongly preferred that speed, duplex and pause settings
+ * are handled in the mac_link_up() method and not in this method.
+ *
  * (this requires a rewrite - please refer to mac_link_up() for situations
  *  where the PCS and MAC are not tightly integrated.)
  *
@@ -277,6 +343,10 @@ int mac_finish(struct phylink_config *config, unsigned int mode,
 /**
  * mac_an_restart() - restart 802.3z BaseX autonegotiation
  * @config: a pointer to a &struct phylink_config.
+ *
+ * Note: This is a legacy method. This function will not be called unless
+ * legacy_pre_march2020 is set in &struct phylink_config and there is no
+ * PCS attached.
  */
 void mac_an_restart(struct phylink_config *config);
 
@@ -344,6 +414,7 @@ struct phylink_pcs {
 
 /**
  * struct phylink_pcs_ops - MAC PCS operations structure.
+ * @pcs_validate: validate the link configuration.
  * @pcs_get_state: read the current MAC PCS link state from the hardware.
  * @pcs_config: configure the MAC PCS for the selected mode and state.
  * @pcs_an_restart: restart 802.3z BaseX autonegotiation.
@@ -351,6 +422,8 @@ struct phylink_pcs {
  *               (where necessary).
  */
 struct phylink_pcs_ops {
+	int (*pcs_validate)(struct phylink_pcs *pcs, unsigned long *supported,
+			    const struct phylink_link_state *state);
 	void (*pcs_get_state)(struct phylink_pcs *pcs,
 			      struct phylink_link_state *state);
 	int (*pcs_config)(struct phylink_pcs *pcs, unsigned int mode,
@@ -364,6 +437,23 @@ struct phylink_pcs_ops {
 
 #if 0 /* For kernel-doc purposes only. */
 /**
+ * pcs_validate() - validate the link configuration.
+ * @pcs: a pointer to a &struct phylink_pcs.
+ * @supported: ethtool bitmask for supported link modes.
+ * @state: a const pointer to a &struct phylink_link_state.
+ *
+ * Validate the interface mode, and advertising's autoneg bit, removing any
+ * media ethtool link modes that would not be supportable from the supported
+ * mask. Phylink will propagate the changes to the advertising mask. See the
+ * &struct phylink_mac_ops validate() method.
+ *
+ * Returns -EINVAL if the interface mode/autoneg mode is not supported.
+ * Returns non-zero positive if the link state can be supported.
+ */
+int pcs_validate(struct phylink_pcs *pcs, unsigned long *supported,
+		 const struct phylink_link_state *state);
+
+/**
  * pcs_get_state() - Read the current inband link state from the hardware
  * @pcs: a pointer to a &struct phylink_pcs.
  * @state: a pointer to a &struct phylink_link_state.
@@ -433,10 +523,15 @@ void pcs_link_up(struct phylink_pcs *pcs, unsigned int mode,
 		 phy_interface_t interface, int speed, int duplex);
 #endif
 
+void phylink_get_linkmodes(unsigned long *linkmodes, phy_interface_t interface,
+			   unsigned long mac_capabilities);
+void phylink_generic_validate(struct phylink_config *config,
+			      unsigned long *supported,
+			      struct phylink_link_state *state);
+
 struct phylink *phylink_create(struct phylink_config *, struct fwnode_handle *,
 			       phy_interface_t iface,
 			       const struct phylink_mac_ops *mac_ops);
-void phylink_set_pcs(struct phylink *, struct phylink_pcs *pcs);
 void phylink_destroy(struct phylink *);
 
 int phylink_connect_phy(struct phylink *, struct phy_device *);
@@ -486,11 +581,12 @@ int phylink_speed_up(struct phylink *pl);
 void phylink_set_port_modes(unsigned long *bits);
 void phylink_helper_basex_speed(struct phylink_link_state *state);
 
+void phylink_mii_c22_pcs_decode_state(struct phylink_link_state *state,
+				      u16 bmsr, u16 lpa);
 void phylink_mii_c22_pcs_get_state(struct mdio_device *pcs,
 				   struct phylink_link_state *state);
-int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs,
-					  phy_interface_t interface,
-					  const unsigned long *advertising);
+int phylink_mii_c22_pcs_encode_advertisement(phy_interface_t interface,
+					     const unsigned long *advertising);
 int phylink_mii_c22_pcs_config(struct mdio_device *pcs, unsigned int mode,
 			       phy_interface_t interface,
 			       const unsigned long *advertising);
diff --git a/include/linux/pid.h b/include/linux/pid.h
index af308e15f174..343abf22092e 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -78,6 +78,7 @@ struct file;
 
 extern struct pid *pidfd_pid(const struct file *file);
 struct pid *pidfd_get_pid(unsigned int fd, unsigned int *flags);
+struct task_struct *pidfd_get_task(int pidfd, unsigned int *flags);
 int pidfd_create(struct pid *pid, unsigned int flags);
 
 static inline struct pid *get_pid(struct pid *pid)
diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index 7c7e627503d2..07481bb87d4e 100644
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h
@@ -86,4 +86,9 @@ extern struct pid_namespace *task_active_pid_ns(struct task_struct *tsk);
 void pidhash_init(void);
 void pid_idr_init(void);
 
+static inline bool task_is_in_init_pid_ns(struct task_struct *tsk)
+{
+	return task_active_pid_ns(tsk) == &init_pid_ns;
+}
+
 #endif /* _LINUX_PID_NS_H */
diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index eee0e3948537..2422211d6a5a 100644
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -91,6 +91,8 @@ struct pinctrl_map;
  * 	configuration (eg. the currently selected mux function) drive values on
  * 	the line. Use argument 1 to enable output mode, argument 0 to disable
  * 	it.
+ * @PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: this will configure the output impedance
+ * 	of the pin with the value passed as argument. The argument is in ohms.
  * @PIN_CONFIG_PERSIST_STATE: retain pin state across sleep or controller reset
  * @PIN_CONFIG_POWER_SOURCE: if the pin can select between different power
  *	supplies, the argument to this parameter (on a custom format) tells
@@ -129,6 +131,7 @@ enum pin_config_param {
 	PIN_CONFIG_MODE_PWM,
 	PIN_CONFIG_OUTPUT,
 	PIN_CONFIG_OUTPUT_ENABLE,
+	PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS,
 	PIN_CONFIG_PERSIST_STATE,
 	PIN_CONFIG_POWER_SOURCE,
 	PIN_CONFIG_SKEW_DELAY,
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index fc5642431b92..c00c618ef290 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -238,10 +238,6 @@ void pipe_lock(struct pipe_inode_info *);
 void pipe_unlock(struct pipe_inode_info *);
 void pipe_double_lock(struct pipe_inode_info *, struct pipe_inode_info *);
 
-extern unsigned int pipe_max_size;
-extern unsigned long pipe_user_pages_hard;
-extern unsigned long pipe_user_pages_soft;
-
 /* Wait for a pipe to be readable/writable while dropping the pipe lock */
 void pipe_wait_readable(struct pipe_inode_info *);
 void pipe_wait_writable(struct pipe_inode_info *);
diff --git a/include/linux/pktcdvd.h b/include/linux/pktcdvd.h
index 174601554b06..f9c5ac80d59b 100644
--- a/include/linux/pktcdvd.h
+++ b/include/linux/pktcdvd.h
@@ -152,14 +152,6 @@ struct packet_stacked_data
 };
 #define PSD_POOL_SIZE		64
 
-struct pktcdvd_kobj
-{
-	struct kobject		kobj;
-	struct pktcdvd_device	*pd;
-};
-#define to_pktcdvdkobj(_k) \
-  ((struct pktcdvd_kobj*)container_of(_k,struct pktcdvd_kobj,kobj))
-
 struct pktcdvd_device
 {
 	struct block_device	*bdev;		/* dev attached */
@@ -183,6 +175,8 @@ struct pktcdvd_device
 	spinlock_t		lock;		/* Serialize access to bio_queue */
 	struct rb_root		bio_queue;	/* Work queue of bios we need to handle */
 	int			bio_queue_size;	/* Number of nodes in bio_queue */
+	bool			congested;	/* Someone is waiting for bio_queue_size
+						 * to drop. */
 	sector_t		current_sector;	/* Keep track of where the elevator is */
 	atomic_t		scan_queue;	/* Set to non-zero when pkt_handle_queue */
 						/* needs to be run. */
@@ -195,8 +189,6 @@ struct pktcdvd_device
 	int			write_congestion_on;
 
 	struct device		*dev;		/* sysfs pktcdvd[0-7] dev */
-	struct pktcdvd_kobj	*kobj_stat;	/* sysfs pktcdvd[0-7]/stat/     */
-	struct pktcdvd_kobj	*kobj_wqueue;	/* sysfs pktcdvd[0-7]/write_queue/ */
 
 	struct dentry		*dfs_d_root;	/* debugfs: devname directory */
 	struct dentry		*dfs_f_info;	/* debugfs: info file */
diff --git a/include/linux/platform_data/ad5755.h b/include/linux/platform_data/ad5755.h
deleted file mode 100644
index e371e08f04bc..000000000000
--- a/include/linux/platform_data/ad5755.h
+++ /dev/null
@@ -1,102 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright 2012 Analog Devices Inc.
- */
-#ifndef __LINUX_PLATFORM_DATA_AD5755_H__
-#define __LINUX_PLATFORM_DATA_AD5755_H__
-
-enum ad5755_mode {
-	AD5755_MODE_VOLTAGE_0V_5V		= 0,
-	AD5755_MODE_VOLTAGE_0V_10V		= 1,
-	AD5755_MODE_VOLTAGE_PLUSMINUS_5V	= 2,
-	AD5755_MODE_VOLTAGE_PLUSMINUS_10V	= 3,
-	AD5755_MODE_CURRENT_4mA_20mA		= 4,
-	AD5755_MODE_CURRENT_0mA_20mA		= 5,
-	AD5755_MODE_CURRENT_0mA_24mA		= 6,
-};
-
-enum ad5755_dc_dc_phase {
-	AD5755_DC_DC_PHASE_ALL_SAME_EDGE		= 0,
-	AD5755_DC_DC_PHASE_A_B_SAME_EDGE_C_D_OPP_EDGE	= 1,
-	AD5755_DC_DC_PHASE_A_C_SAME_EDGE_B_D_OPP_EDGE	= 2,
-	AD5755_DC_DC_PHASE_90_DEGREE			= 3,
-};
-
-enum ad5755_dc_dc_freq {
-	AD5755_DC_DC_FREQ_250kHZ = 0,
-	AD5755_DC_DC_FREQ_410kHZ = 1,
-	AD5755_DC_DC_FREQ_650kHZ = 2,
-};
-
-enum ad5755_dc_dc_maxv {
-	AD5755_DC_DC_MAXV_23V	= 0,
-	AD5755_DC_DC_MAXV_24V5	= 1,
-	AD5755_DC_DC_MAXV_27V	= 2,
-	AD5755_DC_DC_MAXV_29V5	= 3,
-};
-
-enum ad5755_slew_rate {
-	AD5755_SLEW_RATE_64k	= 0,
-	AD5755_SLEW_RATE_32k	= 1,
-	AD5755_SLEW_RATE_16k	= 2,
-	AD5755_SLEW_RATE_8k	= 3,
-	AD5755_SLEW_RATE_4k	= 4,
-	AD5755_SLEW_RATE_2k	= 5,
-	AD5755_SLEW_RATE_1k	= 6,
-	AD5755_SLEW_RATE_500	= 7,
-	AD5755_SLEW_RATE_250	= 8,
-	AD5755_SLEW_RATE_125	= 9,
-	AD5755_SLEW_RATE_64	= 10,
-	AD5755_SLEW_RATE_32	= 11,
-	AD5755_SLEW_RATE_16	= 12,
-	AD5755_SLEW_RATE_8	= 13,
-	AD5755_SLEW_RATE_4	= 14,
-	AD5755_SLEW_RATE_0_5	= 15,
-};
-
-enum ad5755_slew_step_size {
-	AD5755_SLEW_STEP_SIZE_1 = 0,
-	AD5755_SLEW_STEP_SIZE_2 = 1,
-	AD5755_SLEW_STEP_SIZE_4 = 2,
-	AD5755_SLEW_STEP_SIZE_8 = 3,
-	AD5755_SLEW_STEP_SIZE_16 = 4,
-	AD5755_SLEW_STEP_SIZE_32 = 5,
-	AD5755_SLEW_STEP_SIZE_64 = 6,
-	AD5755_SLEW_STEP_SIZE_128 = 7,
-	AD5755_SLEW_STEP_SIZE_256 = 8,
-};
-
-/**
- * struct ad5755_platform_data - AD5755 DAC driver platform data
- * @ext_dc_dc_compenstation_resistor: Whether an external DC-DC converter
- * compensation register is used.
- * @dc_dc_phase: DC-DC converter phase.
- * @dc_dc_freq: DC-DC converter frequency.
- * @dc_dc_maxv: DC-DC maximum allowed boost voltage.
- * @dac.mode: The mode to be used for the DAC output.
- * @dac.ext_current_sense_resistor: Whether an external current sense resistor
- * is used.
- * @dac.enable_voltage_overrange: Whether to enable 20% voltage output overrange.
- * @dac.slew.enable: Whether to enable digital slew.
- * @dac.slew.rate: Slew rate of the digital slew.
- * @dac.slew.step_size: Slew step size of the digital slew.
- **/
-struct ad5755_platform_data {
-	bool ext_dc_dc_compenstation_resistor;
-	enum ad5755_dc_dc_phase dc_dc_phase;
-	enum ad5755_dc_dc_freq dc_dc_freq;
-	enum ad5755_dc_dc_maxv dc_dc_maxv;
-
-	struct {
-		enum ad5755_mode mode;
-		bool ext_current_sense_resistor;
-		bool enable_voltage_overrange;
-		struct {
-			bool enable;
-			enum ad5755_slew_rate rate;
-			enum ad5755_slew_step_size step_size;
-		} slew;
-	} dac[4];
-};
-
-#endif
diff --git a/include/linux/platform_data/bcm7038_wdt.h b/include/linux/platform_data/bcm7038_wdt.h
new file mode 100644
index 000000000000..e18cfd9ec8f9
--- /dev/null
+++ b/include/linux/platform_data/bcm7038_wdt.h
@@ -0,0 +1,8 @@
+#ifndef __BCM7038_WDT_PDATA_H
+#define __BCM7038_WDT_PDATA_H
+
+struct bcm7038_wdt_platform_data {
+	const char *clk_name;
+};
+
+#endif /* __BCM7038_WDT_PDATA_H */
diff --git a/include/linux/platform_data/brcmfmac.h b/include/linux/platform_data/brcmfmac.h
index 1d30bf278231..f922a192fe58 100644
--- a/include/linux/platform_data/brcmfmac.h
+++ b/include/linux/platform_data/brcmfmac.h
@@ -125,7 +125,7 @@ struct brcmfmac_pd_cc_entry {
  */
 struct brcmfmac_pd_cc {
 	int				table_size;
-	struct brcmfmac_pd_cc_entry	table[0];
+	struct brcmfmac_pd_cc_entry	table[];
 };
 
 /**
@@ -178,7 +178,7 @@ struct brcmfmac_platform_data {
 	void	(*power_off)(void);
 	char	*fw_alternative_path;
 	int	device_count;
-	struct brcmfmac_pd_device devices[0];
+	struct brcmfmac_pd_device devices[];
 };
 
 
diff --git a/include/linux/platform_data/brcmnand.h b/include/linux/platform_data/brcmnand.h
new file mode 100644
index 000000000000..8b8777985dce
--- /dev/null
+++ b/include/linux/platform_data/brcmnand.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef BRCMNAND_PLAT_DATA_H
+#define BRCMNAND_PLAT_DATA_H
+
+struct brcmnand_platform_data {
+	int	chip_select;
+	const char * const *part_probe_types;
+	unsigned int ecc_stepsize;
+	unsigned int ecc_strength;
+};
+
+#endif /* BRCMNAND_PLAT_DATA_H */
diff --git a/include/linux/platform_data/clk-fch.h b/include/linux/platform_data/clk-fch.h
index b9f682459f08..11a2a23fd9b2 100644
--- a/include/linux/platform_data/clk-fch.h
+++ b/include/linux/platform_data/clk-fch.h
@@ -12,7 +12,7 @@
 
 struct fch_clk_data {
 	void __iomem *base;
-	u32 is_rv;
+	char *name;
 };
 
 #endif /* __CLK_FCH_H */
diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
index 271bd87bff0a..c23554531961 100644
--- a/include/linux/platform_data/cros_ec_commands.h
+++ b/include/linux/platform_data/cros_ec_commands.h
@@ -3386,6 +3386,9 @@ enum ec_mkbp_event {
 	/* Send an incoming CEC message to the AP */
 	EC_MKBP_EVENT_CEC_MESSAGE = 9,
 
+	/* Peripheral device charger event */
+	EC_MKBP_EVENT_PCHG = 12,
+
 	/* Number of MKBP events */
 	EC_MKBP_EVENT_COUNT,
 };
@@ -5527,6 +5530,67 @@ enum pchg_state {
 	[PCHG_STATE_CONNECTED] = "CONNECTED", \
 	}
 
+/*
+ * Update firmware of peripheral chip
+ */
+#define EC_CMD_PCHG_UPDATE 0x0136
+
+/* Port number is encoded in bit[28:31]. */
+#define EC_MKBP_PCHG_PORT_SHIFT		28
+/* Utility macro for converting MKBP event to port number. */
+#define EC_MKBP_PCHG_EVENT_TO_PORT(e)	(((e) >> EC_MKBP_PCHG_PORT_SHIFT) & 0xf)
+/* Utility macro for extracting event bits. */
+#define EC_MKBP_PCHG_EVENT_MASK(e)	((e) \
+					& GENMASK(EC_MKBP_PCHG_PORT_SHIFT-1, 0))
+
+#define EC_MKBP_PCHG_UPDATE_OPENED	BIT(0)
+#define EC_MKBP_PCHG_WRITE_COMPLETE	BIT(1)
+#define EC_MKBP_PCHG_UPDATE_CLOSED	BIT(2)
+#define EC_MKBP_PCHG_UPDATE_ERROR	BIT(3)
+#define EC_MKBP_PCHG_DEVICE_EVENT	BIT(4)
+
+enum ec_pchg_update_cmd {
+	/* Reset chip to normal mode. */
+	EC_PCHG_UPDATE_CMD_RESET_TO_NORMAL = 0,
+	/* Reset and put a chip in update (a.k.a. download) mode. */
+	EC_PCHG_UPDATE_CMD_OPEN,
+	/* Write a block of data containing FW image. */
+	EC_PCHG_UPDATE_CMD_WRITE,
+	/* Close update session. */
+	EC_PCHG_UPDATE_CMD_CLOSE,
+	/* End of commands */
+	EC_PCHG_UPDATE_CMD_COUNT,
+};
+
+struct ec_params_pchg_update {
+	/* PCHG port number */
+	uint8_t port;
+	/* enum ec_pchg_update_cmd */
+	uint8_t cmd;
+	/* Padding */
+	uint8_t reserved0;
+	uint8_t reserved1;
+	/* Version of new firmware */
+	uint32_t version;
+	/* CRC32 of new firmware */
+	uint32_t crc32;
+	/* Address in chip memory where <data> is written to */
+	uint32_t addr;
+	/* Size of <data> */
+	uint32_t size;
+	/* Partial data of new firmware */
+	uint8_t data[];
+} __ec_align4;
+
+BUILD_ASSERT(EC_PCHG_UPDATE_CMD_COUNT
+	     < BIT(sizeof(((struct ec_params_pchg_update *)0)->cmd)*8));
+
+struct ec_response_pchg_update {
+	/* Block size */
+	uint32_t block_size;
+} __ec_align4;
+
+
 /*****************************************************************************/
 /* Voltage regulator controls */
 
@@ -5644,7 +5708,7 @@ struct ec_response_typec_discovery {
 	uint8_t svid_count;	   /* Number of SVIDs partner sent */
 	uint16_t reserved;
 	uint32_t discovery_vdo[6]; /* Max VDOs allowed after VDM header is 6 */
-	struct svid_mode_info svids[0];
+	struct svid_mode_info svids[];
 } __ec_align1;
 
 /* USB Type-C commands for AP-controlled device policy. */
diff --git a/include/linux/platform_data/cros_ec_proto.h b/include/linux/platform_data/cros_ec_proto.h
index 02599687770c..df3c78c92ca2 100644
--- a/include/linux/platform_data/cros_ec_proto.h
+++ b/include/linux/platform_data/cros_ec_proto.h
@@ -205,7 +205,7 @@ struct cros_ec_dev {
 	struct cros_ec_debugfs *debug_info;
 	bool has_kb_wake_angle;
 	u16 cmd_offset;
-	u32 features[2];
+	struct ec_response_get_features features;
 };
 
 #define to_cros_ec_dev(dev)  container_of(dev, struct cros_ec_dev, class_dev)
@@ -227,10 +227,13 @@ int cros_ec_get_next_event(struct cros_ec_device *ec_dev,
 
 u32 cros_ec_get_host_event(struct cros_ec_device *ec_dev);
 
-int cros_ec_check_features(struct cros_ec_dev *ec, int feature);
+bool cros_ec_check_features(struct cros_ec_dev *ec, int feature);
 
 int cros_ec_get_sensor_count(struct cros_ec_dev *ec);
 
+int cros_ec_command(struct cros_ec_device *ec_dev, unsigned int version, int command, void *outdata,
+		    int outsize, void *indata, int insize);
+
 /**
  * cros_ec_get_time_ns() - Return time in ns.
  *
diff --git a/include/linux/platform_data/eth_ixp4xx.h b/include/linux/platform_data/eth_ixp4xx.h
deleted file mode 100644
index 114b0940729f..000000000000
--- a/include/linux/platform_data/eth_ixp4xx.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __PLATFORM_DATA_ETH_IXP4XX
-#define __PLATFORM_DATA_ETH_IXP4XX
-
-#include <linux/types.h>
-
-#define IXP4XX_ETH_NPEA		0x00
-#define IXP4XX_ETH_NPEB		0x10
-#define IXP4XX_ETH_NPEC		0x20
-
-/* Information about built-in Ethernet MAC interfaces */
-struct eth_plat_info {
-	u8 phy;		/* MII PHY ID, 0 - 31 */
-	u8 rxq;		/* configurable, currently 0 - 31 only */
-	u8 txreadyq;
-	u8 hwaddr[6];
-	u8 npe;		/* NPE instance used by this interface */
-	bool has_mdio;	/* If this instance has an MDIO bus */
-};
-
-#endif
diff --git a/include/linux/platform_data/mlxreg.h b/include/linux/platform_data/mlxreg.h
index 101333fe2b8d..40185f9d7c14 100644
--- a/include/linux/platform_data/mlxreg.h
+++ b/include/linux/platform_data/mlxreg.h
@@ -25,12 +25,75 @@ enum mlxreg_wdt_type {
 };
 
 /**
+ * enum mlxreg_hotplug_kind - kind of hotplug entry
+ *
+ * @MLXREG_HOTPLUG_DEVICE_NA: do not care;
+ * @MLXREG_HOTPLUG_LC_PRESENT: entry for line card presence in/out events;
+ * @MLXREG_HOTPLUG_LC_VERIFIED: entry for line card verification status events
+ *				coming after line card security signature validation;
+ * @MLXREG_HOTPLUG_LC_POWERED: entry for line card power on/off events;
+ * @MLXREG_HOTPLUG_LC_SYNCED: entry for line card synchronization events, coming
+ *			      after hardware-firmware synchronization handshake;
+ * @MLXREG_HOTPLUG_LC_READY: entry for line card ready events, indicating line card
+			     PHYs ready / unready state;
+ * @MLXREG_HOTPLUG_LC_ACTIVE: entry for line card active events, indicating firmware
+ *			      availability / unavailability for the ports on line card;
+ * @MLXREG_HOTPLUG_LC_THERMAL: entry for line card thermal shutdown events, positive
+ *			       event indicates that system should power off the line
+ *			       card for which this event has been received;
+ */
+enum mlxreg_hotplug_kind {
+	MLXREG_HOTPLUG_DEVICE_NA = 0,
+	MLXREG_HOTPLUG_LC_PRESENT = 1,
+	MLXREG_HOTPLUG_LC_VERIFIED = 2,
+	MLXREG_HOTPLUG_LC_POWERED = 3,
+	MLXREG_HOTPLUG_LC_SYNCED = 4,
+	MLXREG_HOTPLUG_LC_READY = 5,
+	MLXREG_HOTPLUG_LC_ACTIVE = 6,
+	MLXREG_HOTPLUG_LC_THERMAL = 7,
+};
+
+/**
+ * enum mlxreg_hotplug_device_action - hotplug device action required for
+ *				       driver's connectivity
+ *
+ * @MLXREG_HOTPLUG_DEVICE_DEFAULT_ACTION: probe device for 'on' event, remove
+ *					  for 'off' event;
+ * @MLXREG_HOTPLUG_DEVICE_PLATFORM_ACTION: probe platform device for 'on'
+ *					   event, remove for 'off' event;
+ * @MLXREG_HOTPLUG_DEVICE_NO_ACTION: no connectivity action is required;
+ */
+enum mlxreg_hotplug_device_action {
+	MLXREG_HOTPLUG_DEVICE_DEFAULT_ACTION = 0,
+	MLXREG_HOTPLUG_DEVICE_PLATFORM_ACTION = 1,
+	MLXREG_HOTPLUG_DEVICE_NO_ACTION = 2,
+};
+
+/**
+ * struct mlxreg_core_hotplug_notifier - hotplug notifier block:
+ *
+ * @identity: notifier identity name;
+ * @handle: user handle to be passed by user handler function;
+ * @user_handler: user handler function associated with the event;
+ */
+struct mlxreg_core_hotplug_notifier {
+	char identity[MLXREG_CORE_LABEL_MAX_SIZE];
+	void *handle;
+	int (*user_handler)(void *handle, enum mlxreg_hotplug_kind kind, u8 action);
+};
+
+/**
  * struct mlxreg_hotplug_device - I2C device data:
  *
  * @adapter: I2C device adapter;
  * @client: I2C device client;
  * @brdinfo: device board information;
  * @nr: I2C device adapter number, to which device is to be attached;
+ * @pdev: platform device, if device is instantiated as a platform device;
+ * @action: action to be performed upon event receiving;
+ * @handle: user handle to be passed by user handler function;
+ * @user_handler: user handler function associated with the event;
+ * @notifier: pointer to event notifier block;
  *
  * Structure represents I2C hotplug device static data (board topology) and
  * dynamic data (related kernel objects handles).
@@ -40,6 +103,11 @@ struct mlxreg_hotplug_device {
 	struct i2c_client *client;
 	struct i2c_board_info *brdinfo;
 	int nr;
+	struct platform_device *pdev;
+	enum mlxreg_hotplug_device_action action;
+	void *handle;
+	int (*user_handler)(void *handle, enum mlxreg_hotplug_kind kind, u8 action);
+	struct mlxreg_core_hotplug_notifier *notifier;
 };
 
 /**
@@ -51,12 +119,18 @@ struct mlxreg_hotplug_device {
  * @bit: attribute effective bit;
  * @capability: attribute capability register;
  * @reg_prsnt: attribute presence register;
+ * @reg_sync: attribute synch register;
+ * @reg_pwr: attribute power register;
+ * @reg_ena: attribute enable register;
  * @mode: access mode;
  * @np - pointer to node platform associated with attribute;
  * @hpdev - hotplug device data;
+ * @notifier: pointer to event notifier block;
  * @health_cntr: dynamic device health indication counter;
  * @attached: true if device has been attached after good health indication;
  * @regnum: number of registers occupied by multi-register attribute;
+ * @slot: slot number, at which device is located;
+ * @secured: if set indicates that entry access is secured;
  */
 struct mlxreg_core_data {
 	char label[MLXREG_CORE_LABEL_MAX_SIZE];
@@ -65,18 +139,25 @@ struct mlxreg_core_data {
 	u32 bit;
 	u32 capability;
 	u32 reg_prsnt;
+	u32 reg_sync;
+	u32 reg_pwr;
+	u32 reg_ena;
 	umode_t	mode;
 	struct device_node *np;
 	struct mlxreg_hotplug_device hpdev;
+	struct mlxreg_core_hotplug_notifier *notifier;
 	u32 health_cntr;
 	bool attached;
 	u8 regnum;
+	u8 slot;
+	u8 secured;
 };
 
 /**
  * struct mlxreg_core_item - same type components controlled by the driver:
  *
  * @data: component data;
+ * @kind: kind of hotplug attribute;
  * @aggr_mask: group aggregation mask;
  * @reg: group interrupt status register;
  * @mask: group interrupt mask;
@@ -89,6 +170,7 @@ struct mlxreg_core_data {
  */
 struct mlxreg_core_item {
 	struct mlxreg_core_data *data;
+	enum mlxreg_hotplug_kind kind;
 	u32 aggr_mask;
 	u32 reg;
 	u32 mask;
diff --git a/include/linux/platform_data/mtd-nand-omap2.h b/include/linux/platform_data/mtd-nand-omap2.h
index de6ada739121..8c2f1f185353 100644
--- a/include/linux/platform_data/mtd-nand-omap2.h
+++ b/include/linux/platform_data/mtd-nand-omap2.h
@@ -7,6 +7,7 @@
 #define	_MTD_NAND_OMAP2_H
 
 #include <linux/mtd/partitions.h>
+#include <linux/mod_devicetable.h>
 
 #define	GPMC_BCH_NUM_REMAINDER	8
 
@@ -61,4 +62,11 @@ struct gpmc_nand_regs {
 	void __iomem	*gpmc_bch_result5[GPMC_BCH_NUM_REMAINDER];
 	void __iomem	*gpmc_bch_result6[GPMC_BCH_NUM_REMAINDER];
 };
-#endif
+
+static const struct of_device_id omap_nand_ids[] = {
+	{ .compatible = "ti,omap2-nand", },
+	{ .compatible = "ti,am64-nand", },
+	{},
+};
+
+#endif /* _MTD_NAND_OMAP2_H */
diff --git a/include/linux/platform_data/ntc_thermistor.h b/include/linux/platform_data/ntc_thermistor.h
deleted file mode 100644
index b324d03e580c..000000000000
--- a/include/linux/platform_data/ntc_thermistor.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * ntc_thermistor.h - NTC Thermistors
- *
- *  Copyright (C) 2010 Samsung Electronics
- *  MyungJoo Ham <myungjoo.ham@samsung.com>
- */
-#ifndef _LINUX_NTC_H
-#define _LINUX_NTC_H
-
-struct iio_channel;
-
-enum ntc_thermistor_type {
-	TYPE_B57330V2103,
-	TYPE_B57891S0103,
-	TYPE_NCPXXWB473,
-	TYPE_NCPXXWF104,
-	TYPE_NCPXXWL333,
-	TYPE_NCPXXXH103,
-};
-
-struct ntc_thermistor_platform_data {
-	/*
-	 * One (not both) of read_uV and read_ohm should be provided and only
-	 * one of the two should be provided.
-	 * Both functions should return negative value for an error case.
-	 *
-	 * pullup_uV, pullup_ohm, pulldown_ohm, and connect are required to use
-	 * read_uV()
-	 *
-	 * How to setup pullup_ohm, pulldown_ohm, and connect is
-	 * described at Documentation/hwmon/ntc_thermistor.rst
-	 *
-	 * pullup/down_ohm: 0 for infinite / not-connected
-	 *
-	 * chan: iio_channel pointer to communicate with the ADC which the
-	 * thermistor is using for conversion of the analog values.
-	 */
-	int (*read_uv)(struct ntc_thermistor_platform_data *);
-	unsigned int pullup_uv;
-
-	unsigned int pullup_ohm;
-	unsigned int pulldown_ohm;
-	enum { NTC_CONNECTED_POSITIVE, NTC_CONNECTED_GROUND } connect;
-	struct iio_channel *chan;
-
-	int (*read_ohm)(void);
-};
-
-#endif /* _LINUX_NTC_H */
diff --git a/include/linux/platform_data/pata_ixp4xx_cf.h b/include/linux/platform_data/pata_ixp4xx_cf.h
deleted file mode 100644
index e60fa41da4a5..000000000000
--- a/include/linux/platform_data/pata_ixp4xx_cf.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __PLATFORM_DATA_PATA_IXP4XX_H
-#define __PLATFORM_DATA_PATA_IXP4XX_H
-
-#include <linux/types.h>
-
-/*
- * This structure provide a means for the board setup code
- * to give information to th pata_ixp4xx driver. It is
- * passed as platform_data.
- */
-struct ixp4xx_pata_data {
-	volatile u32	*cs0_cfg;
-	volatile u32	*cs1_cfg;
-	unsigned long	cs0_bits;
-	unsigned long	cs1_bits;
-	void __iomem	*cmd;
-	void __iomem	*ctl;
-};
-
-#endif
diff --git a/include/linux/platform_data/spi-clps711x.h b/include/linux/platform_data/spi-clps711x.h
deleted file mode 100644
index efaa596848c9..000000000000
--- a/include/linux/platform_data/spi-clps711x.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- *  CLPS711X SPI bus driver definitions
- *
- *  Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
- */
-
-#ifndef ____LINUX_PLATFORM_DATA_SPI_CLPS711X_H
-#define ____LINUX_PLATFORM_DATA_SPI_CLPS711X_H
-
-/* Board specific platform_data */
-struct spi_clps711x_pdata {
-	int *chipselect;	/* Array of GPIO-numbers */
-	int num_chipselect;	/* Total count of GPIOs */
-};
-
-#endif
diff --git a/include/linux/platform_data/spi-s3c64xx.h b/include/linux/platform_data/spi-s3c64xx.h
index 773daf7915a3..5df1ace6d2c9 100644
--- a/include/linux/platform_data/spi-s3c64xx.h
+++ b/include/linux/platform_data/spi-s3c64xx.h
@@ -16,7 +16,6 @@ struct platform_device;
  * struct s3c64xx_spi_csinfo - ChipSelect description
  * @fb_delay: Slave specific feedback delay.
  *            Refer to FB_CLK_SEL register definition in SPI chapter.
- * @line: Custom 'identity' of the CS line.
  *
  * This is per SPI-Slave Chipselect information.
  * Allocate and initialize one in machine init code and make the
@@ -24,7 +23,6 @@ struct platform_device;
  */
 struct s3c64xx_spi_csinfo {
 	u8 fb_delay;
-	unsigned line;
 };
 
 /**
@@ -43,26 +41,16 @@ struct s3c64xx_spi_info {
 /**
  * s3c64xx_spi_set_platdata - SPI Controller configure callback by the board
  *				initialization code.
- * @cfg_gpio: Pointer to gpio setup function.
  * @src_clk_nr: Clock the SPI controller is to use to generate SPI clocks.
  * @num_cs: Number of elements in the 'cs' array.
  *
  * Call this from machine init code for each SPI Controller that
  * has some chips attached to it.
  */
-extern void s3c64xx_spi0_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
-						int num_cs);
-extern void s3c64xx_spi1_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
-						int num_cs);
-extern void s3c64xx_spi2_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
-						int num_cs);
+extern void s3c64xx_spi0_set_platdata(int src_clk_nr, int num_cs);
 
 /* defined by architecture to configure gpio */
 extern int s3c64xx_spi0_cfg_gpio(void);
-extern int s3c64xx_spi1_cfg_gpio(void);
-extern int s3c64xx_spi2_cfg_gpio(void);
 
 extern struct s3c64xx_spi_info s3c64xx_spi0_pdata;
-extern struct s3c64xx_spi_info s3c64xx_spi1_pdata;
-extern struct s3c64xx_spi_info s3c64xx_spi2_pdata;
 #endif /*__SPI_S3C64XX_H */
diff --git a/include/linux/platform_data/ti-sysc.h b/include/linux/platform_data/ti-sysc.h
index 9837fb011f2f..eb556f988d57 100644
--- a/include/linux/platform_data/ti-sysc.h
+++ b/include/linux/platform_data/ti-sysc.h
@@ -50,6 +50,9 @@ struct sysc_regbits {
 	s8 emufree_shift;
 };
 
+#define SYSC_MODULE_QUIRK_OTG		BIT(30)
+#define SYSC_QUIRK_RESET_ON_CTX_LOST	BIT(29)
+#define SYSC_QUIRK_REINIT_ON_CTX_LOST	BIT(28)
 #define SYSC_QUIRK_REINIT_ON_RESUME	BIT(27)
 #define SYSC_QUIRK_GPMC_DEBUG		BIT(26)
 #define SYSC_MODULE_QUIRK_ENA_RESETDONE	BIT(25)
diff --git a/include/linux/platform_data/tps68470.h b/include/linux/platform_data/tps68470.h
new file mode 100644
index 000000000000..126d082c3f2e
--- /dev/null
+++ b/include/linux/platform_data/tps68470.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * TI TPS68470 PMIC platform data definition.
+ *
+ * Copyright (c) 2021 Red Hat Inc.
+ *
+ * Red Hat authors:
+ * Hans de Goede <hdegoede@redhat.com>
+ */
+#ifndef __PDATA_TPS68470_H
+#define __PDATA_TPS68470_H
+
+enum tps68470_regulators {
+	TPS68470_CORE,
+	TPS68470_ANA,
+	TPS68470_VCM,
+	TPS68470_VIO,
+	TPS68470_VSIO,
+	TPS68470_AUX1,
+	TPS68470_AUX2,
+	TPS68470_NUM_REGULATORS
+};
+
+struct regulator_init_data;
+
+struct tps68470_regulator_platform_data {
+	const struct regulator_init_data *reg_init_data[TPS68470_NUM_REGULATORS];
+};
+
+struct tps68470_clk_platform_data {
+	const char *consumer_dev_name;
+	const char *consumer_con_id;
+};
+
+#endif
diff --git a/include/linux/platform_data/ux500_wdt.h b/include/linux/platform_data/ux500_wdt.h
deleted file mode 100644
index de6a4ad41e76..000000000000
--- a/include/linux/platform_data/ux500_wdt.h
+++ /dev/null
@@ -1,18 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) ST Ericsson SA 2011
- *
- * STE Ux500 Watchdog platform data
- */
-#ifndef __UX500_WDT_H
-#define __UX500_WDT_H
-
-/**
- * struct ux500_wdt_data
- */
-struct ux500_wdt_data {
-	unsigned int timeout;
-	bool has_28_bits_resolution;
-};
-
-#endif /* __UX500_WDT_H */
diff --git a/include/linux/platform_data/wan_ixp4xx_hss.h b/include/linux/platform_data/wan_ixp4xx_hss.h
deleted file mode 100644
index d525a0feb9e1..000000000000
--- a/include/linux/platform_data/wan_ixp4xx_hss.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __PLATFORM_DATA_WAN_IXP4XX_HSS_H
-#define __PLATFORM_DATA_WAN_IXP4XX_HSS_H
-
-#include <linux/types.h>
-
-/* Information about built-in HSS (synchronous serial) interfaces */
-struct hss_plat_info {
-	int (*set_clock)(int port, unsigned int clock_type);
-	int (*open)(int port, void *pdev,
-		    void (*set_carrier_cb)(void *pdev, int carrier));
-	void (*close)(int port, void *pdev);
-	u8 txreadyq;
-	u32 timer_freq;
-};
-
-#endif
diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h
index 17dc5cb6f3f2..a571b47ff362 100644
--- a/include/linux/platform_data/x86/asus-wmi.h
+++ b/include/linux/platform_data/x86/asus-wmi.h
@@ -77,6 +77,8 @@
 #define ASUS_WMI_DEVID_THERMAL_CTRL	0x00110011
 #define ASUS_WMI_DEVID_FAN_CTRL		0x00110012 /* deprecated */
 #define ASUS_WMI_DEVID_CPU_FAN_CTRL	0x00110013
+#define ASUS_WMI_DEVID_CPU_FAN_CURVE	0x00110024
+#define ASUS_WMI_DEVID_GPU_FAN_CURVE	0x00110025
 
 /* Power */
 #define ASUS_WMI_DEVID_PROCESSOR_STATE	0x00120012
diff --git a/include/linux/platform_data/x86/simatic-ipc-base.h b/include/linux/platform_data/x86/simatic-ipc-base.h
new file mode 100644
index 000000000000..62d2bc774067
--- /dev/null
+++ b/include/linux/platform_data/x86/simatic-ipc-base.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Siemens SIMATIC IPC drivers
+ *
+ * Copyright (c) Siemens AG, 2018-2021
+ *
+ * Authors:
+ *  Henning Schild <henning.schild@siemens.com>
+ *  Gerd Haeussler <gerd.haeussler.ext@siemens.com>
+ */
+
+#ifndef __PLATFORM_DATA_X86_SIMATIC_IPC_BASE_H
+#define __PLATFORM_DATA_X86_SIMATIC_IPC_BASE_H
+
+#include <linux/types.h>
+
+#define SIMATIC_IPC_DEVICE_NONE 0
+#define SIMATIC_IPC_DEVICE_227D 1
+#define SIMATIC_IPC_DEVICE_427E 2
+#define SIMATIC_IPC_DEVICE_127E 3
+#define SIMATIC_IPC_DEVICE_227E 4
+
+struct simatic_ipc_platform {
+	u8	devmode;
+};
+
+u32 simatic_ipc_get_membase0(unsigned int p2sb);
+
+#endif /* __PLATFORM_DATA_X86_SIMATIC_IPC_BASE_H */
diff --git a/include/linux/platform_data/x86/simatic-ipc.h b/include/linux/platform_data/x86/simatic-ipc.h
new file mode 100644
index 000000000000..f3b76b39776b
--- /dev/null
+++ b/include/linux/platform_data/x86/simatic-ipc.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Siemens SIMATIC IPC drivers
+ *
+ * Copyright (c) Siemens AG, 2018-2021
+ *
+ * Authors:
+ *  Henning Schild <henning.schild@siemens.com>
+ *  Gerd Haeussler <gerd.haeussler.ext@siemens.com>
+ */
+
+#ifndef __PLATFORM_DATA_X86_SIMATIC_IPC_H
+#define __PLATFORM_DATA_X86_SIMATIC_IPC_H
+
+#include <linux/dmi.h>
+#include <linux/platform_data/x86/simatic-ipc-base.h>
+
+#define SIMATIC_IPC_DMI_ENTRY_OEM	129
+/* binary type */
+#define SIMATIC_IPC_DMI_TYPE		0xff
+#define SIMATIC_IPC_DMI_GROUP		0x05
+#define SIMATIC_IPC_DMI_ENTRY		0x02
+#define SIMATIC_IPC_DMI_TID		0x02
+
+enum simatic_ipc_station_ids {
+	SIMATIC_IPC_INVALID_STATION_ID = 0,
+	SIMATIC_IPC_IPC227D = 0x00000501,
+	SIMATIC_IPC_IPC427D = 0x00000701,
+	SIMATIC_IPC_IPC227E = 0x00000901,
+	SIMATIC_IPC_IPC277E = 0x00000902,
+	SIMATIC_IPC_IPC427E = 0x00000A01,
+	SIMATIC_IPC_IPC477E = 0x00000A02,
+	SIMATIC_IPC_IPC127E = 0x00000D01,
+};
+
+static inline u32 simatic_ipc_get_station_id(u8 *data, int max_len)
+{
+	struct {
+		u8	type;		/* type (0xff = binary) */
+		u8	len;		/* len of data entry */
+		u8	group;
+		u8	entry;
+		u8	tid;
+		__le32	station_id;	/* station id (LE) */
+	} __packed * data_entry = (void *)data + sizeof(struct dmi_header);
+
+	while ((u8 *)data_entry < data + max_len) {
+		if (data_entry->type == SIMATIC_IPC_DMI_TYPE &&
+		    data_entry->len == sizeof(*data_entry) &&
+		    data_entry->group == SIMATIC_IPC_DMI_GROUP &&
+		    data_entry->entry == SIMATIC_IPC_DMI_ENTRY &&
+		    data_entry->tid == SIMATIC_IPC_DMI_TID) {
+			return le32_to_cpu(data_entry->station_id);
+		}
+		data_entry = (void *)((u8 *)(data_entry) + data_entry->len);
+	}
+
+	return SIMATIC_IPC_INVALID_STATION_ID;
+}
+
+static inline void
+simatic_ipc_find_dmi_entry_helper(const struct dmi_header *dh, void *_data)
+{
+	u32 *id = _data;
+
+	if (dh->type != SIMATIC_IPC_DMI_ENTRY_OEM)
+		return;
+
+	*id = simatic_ipc_get_station_id((u8 *)dh, dh->length);
+}
+
+#endif /* __PLATFORM_DATA_X86_SIMATIC_IPC_H */
diff --git a/include/linux/platform_data/x86/soc.h b/include/linux/platform_data/x86/soc.h
new file mode 100644
index 000000000000..da05f425587a
--- /dev/null
+++ b/include/linux/platform_data/x86/soc.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Helpers for Intel SoC model detection
+ *
+ * Copyright (c) 2019, Intel Corporation.
+ */
+
+#ifndef __PLATFORM_DATA_X86_SOC_H
+#define __PLATFORM_DATA_X86_SOC_H
+
+#if IS_ENABLED(CONFIG_X86)
+
+#include <asm/cpu_device_id.h>
+#include <asm/intel-family.h>
+
+#define SOC_INTEL_IS_CPU(soc, type)				\
+static inline bool soc_intel_is_##soc(void)			\
+{								\
+	static const struct x86_cpu_id soc##_cpu_ids[] = {	\
+		X86_MATCH_INTEL_FAM6_MODEL(type, NULL),		\
+		{}						\
+	};							\
+	const struct x86_cpu_id *id;				\
+								\
+	id = x86_match_cpu(soc##_cpu_ids);			\
+	if (id)							\
+		return true;					\
+	return false;						\
+}
+
+SOC_INTEL_IS_CPU(byt, ATOM_SILVERMONT);
+SOC_INTEL_IS_CPU(cht, ATOM_AIRMONT);
+SOC_INTEL_IS_CPU(apl, ATOM_GOLDMONT);
+SOC_INTEL_IS_CPU(glk, ATOM_GOLDMONT_PLUS);
+SOC_INTEL_IS_CPU(cml, KABYLAKE_L);
+
+#else /* IS_ENABLED(CONFIG_X86) */
+
+static inline bool soc_intel_is_byt(void)
+{
+	return false;
+}
+
+static inline bool soc_intel_is_cht(void)
+{
+	return false;
+}
+
+static inline bool soc_intel_is_apl(void)
+{
+	return false;
+}
+
+static inline bool soc_intel_is_glk(void)
+{
+	return false;
+}
+
+static inline bool soc_intel_is_cml(void)
+{
+	return false;
+}
+#endif /* IS_ENABLED(CONFIG_X86) */
+
+#endif /* __PLATFORM_DATA_X86_SOC_H */
diff --git a/include/linux/platform_data/x86/intel-spi.h b/include/linux/platform_data/x86/spi-intel.h
index 7f53a5c6f35e..a512ec37abbb 100644
--- a/include/linux/platform_data/x86/intel-spi.h
+++ b/include/linux/platform_data/x86/spi-intel.h
@@ -6,8 +6,8 @@
  * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
  */
 
-#ifndef INTEL_SPI_PDATA_H
-#define INTEL_SPI_PDATA_H
+#ifndef SPI_INTEL_PDATA_H
+#define SPI_INTEL_PDATA_H
 
 enum intel_spi_type {
 	INTEL_SPI_BYT = 1,
@@ -19,11 +19,13 @@ enum intel_spi_type {
 /**
  * struct intel_spi_boardinfo - Board specific data for Intel SPI driver
  * @type: Type which this controller is compatible with
- * @writeable: The chip is writeable
+ * @set_writeable: Try to make the chip writeable (optional)
+ * @data: Data to be passed to @set_writeable can be %NULL
  */
 struct intel_spi_boardinfo {
 	enum intel_spi_type type;
-	bool writeable;
+	bool (*set_writeable)(void __iomem *base, void *data);
+	void *data;
 };
 
-#endif /* INTEL_SPI_PDATA_H */
+#endif /* SPI_INTEL_PDATA_H */
diff --git a/include/linux/plist.h b/include/linux/plist.h
index 66bab1bca35c..0f352c1d3c80 100644
--- a/include/linux/plist.h
+++ b/include/linux/plist.h
@@ -73,8 +73,11 @@
 #ifndef _LINUX_PLIST_H_
 #define _LINUX_PLIST_H_
 
-#include <linux/kernel.h>
+#include <linux/container_of.h>
 #include <linux/list.h>
+#include <linux/types.h>
+
+#include <asm/bug.h>
 
 struct plist_head {
 	struct list_head node_list;
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 1d8209c09686..e65b3ab28377 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -8,6 +8,7 @@
 #ifndef _LINUX_PM_H
 #define _LINUX_PM_H
 
+#include <linux/export.h>
 #include <linux/list.h>
 #include <linux/workqueue.h>
 #include <linux/spinlock.h>
@@ -300,55 +301,101 @@ struct dev_pm_ops {
 	int (*runtime_idle)(struct device *dev);
 };
 
+#define SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
+	.suspend = pm_sleep_ptr(suspend_fn), \
+	.resume = pm_sleep_ptr(resume_fn), \
+	.freeze = pm_sleep_ptr(suspend_fn), \
+	.thaw = pm_sleep_ptr(resume_fn), \
+	.poweroff = pm_sleep_ptr(suspend_fn), \
+	.restore = pm_sleep_ptr(resume_fn),
+
+#define LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
+	.suspend_late = pm_sleep_ptr(suspend_fn), \
+	.resume_early = pm_sleep_ptr(resume_fn), \
+	.freeze_late = pm_sleep_ptr(suspend_fn), \
+	.thaw_early = pm_sleep_ptr(resume_fn), \
+	.poweroff_late = pm_sleep_ptr(suspend_fn), \
+	.restore_early = pm_sleep_ptr(resume_fn),
+
+#define NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
+	.suspend_noirq = pm_sleep_ptr(suspend_fn), \
+	.resume_noirq = pm_sleep_ptr(resume_fn), \
+	.freeze_noirq = pm_sleep_ptr(suspend_fn), \
+	.thaw_noirq = pm_sleep_ptr(resume_fn), \
+	.poweroff_noirq = pm_sleep_ptr(suspend_fn), \
+	.restore_noirq = pm_sleep_ptr(resume_fn),
+
+#define RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
+	.runtime_suspend = suspend_fn, \
+	.runtime_resume = resume_fn, \
+	.runtime_idle = idle_fn,
+
 #ifdef CONFIG_PM_SLEEP
 #define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
-	.suspend = suspend_fn, \
-	.resume = resume_fn, \
-	.freeze = suspend_fn, \
-	.thaw = resume_fn, \
-	.poweroff = suspend_fn, \
-	.restore = resume_fn,
+	SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
 #else
 #define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
 #endif
 
 #ifdef CONFIG_PM_SLEEP
 #define SET_LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
-	.suspend_late = suspend_fn, \
-	.resume_early = resume_fn, \
-	.freeze_late = suspend_fn, \
-	.thaw_early = resume_fn, \
-	.poweroff_late = suspend_fn, \
-	.restore_early = resume_fn,
+	LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
 #else
 #define SET_LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
 #endif
 
 #ifdef CONFIG_PM_SLEEP
 #define SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
-	.suspend_noirq = suspend_fn, \
-	.resume_noirq = resume_fn, \
-	.freeze_noirq = suspend_fn, \
-	.thaw_noirq = resume_fn, \
-	.poweroff_noirq = suspend_fn, \
-	.restore_noirq = resume_fn,
+	NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
 #else
 #define SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
 #endif
 
 #ifdef CONFIG_PM
 #define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
-	.runtime_suspend = suspend_fn, \
-	.runtime_resume = resume_fn, \
-	.runtime_idle = idle_fn,
+	RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn)
 #else
 #define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn)
 #endif
 
+#define _DEFINE_DEV_PM_OPS(name, \
+			   suspend_fn, resume_fn, \
+			   runtime_suspend_fn, runtime_resume_fn, idle_fn) \
+const struct dev_pm_ops name = { \
+	SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
+	RUNTIME_PM_OPS(runtime_suspend_fn, runtime_resume_fn, idle_fn) \
+}
+
+#ifdef CONFIG_PM
+#define _EXPORT_DEV_PM_OPS(name, suspend_fn, resume_fn, runtime_suspend_fn, \
+			   runtime_resume_fn, idle_fn, sec) \
+	_DEFINE_DEV_PM_OPS(name, suspend_fn, resume_fn, runtime_suspend_fn, \
+			   runtime_resume_fn, idle_fn); \
+	_EXPORT_SYMBOL(name, sec)
+#else
+#define _EXPORT_DEV_PM_OPS(name, suspend_fn, resume_fn, runtime_suspend_fn, \
+			   runtime_resume_fn, idle_fn, sec) \
+static __maybe_unused _DEFINE_DEV_PM_OPS(__static_##name, suspend_fn, \
+					 resume_fn, runtime_suspend_fn, \
+					 runtime_resume_fn, idle_fn)
+#endif
+
 /*
  * Use this if you want to use the same suspend and resume callbacks for suspend
  * to RAM and hibernation.
+ *
+ * If the underlying dev_pm_ops struct symbol has to be exported, use
+ * EXPORT_SIMPLE_DEV_PM_OPS() or EXPORT_GPL_SIMPLE_DEV_PM_OPS() instead.
  */
+#define DEFINE_SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \
+	_DEFINE_DEV_PM_OPS(name, suspend_fn, resume_fn, NULL, NULL, NULL)
+
+#define EXPORT_SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \
+	_EXPORT_DEV_PM_OPS(name, suspend_fn, resume_fn, NULL, NULL, NULL, "")
+#define EXPORT_GPL_SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \
+	_EXPORT_DEV_PM_OPS(name, suspend_fn, resume_fn, NULL, NULL, NULL, "_gpl")
+
+/* Deprecated. Use DEFINE_SIMPLE_DEV_PM_OPS() instead. */
 #define SIMPLE_DEV_PM_OPS(name, suspend_fn, resume_fn) \
 const struct dev_pm_ops __maybe_unused name = { \
 	SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
@@ -366,6 +413,9 @@ const struct dev_pm_ops __maybe_unused name = { \
  * suspend and "early" resume callback pointers, .suspend_late() and
  * .resume_early(), to the same routines as .runtime_suspend() and
  * .runtime_resume(), respectively (and analogously for hibernation).
+ *
+ * Deprecated. You most likely don't want this macro. Use
+ * DEFINE_RUNTIME_DEV_PM_OPS() instead.
  */
 #define UNIVERSAL_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
 const struct dev_pm_ops __maybe_unused name = { \
@@ -373,11 +423,8 @@ const struct dev_pm_ops __maybe_unused name = { \
 	SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
 }
 
-#ifdef CONFIG_PM
-#define pm_ptr(_ptr) (_ptr)
-#else
-#define pm_ptr(_ptr) NULL
-#endif
+#define pm_ptr(_ptr) PTR_IF(IS_ENABLED(CONFIG_PM), (_ptr))
+#define pm_sleep_ptr(_ptr) PTR_IF(IS_ENABLED(CONFIG_PM_SLEEP), (_ptr))
 
 /*
  * PM_EVENT_ messages
@@ -499,6 +546,7 @@ const struct dev_pm_ops __maybe_unused name = { \
  */
 
 enum rpm_status {
+	RPM_INVALID = -1,
 	RPM_ACTIVE = 0,
 	RPM_RESUMING,
 	RPM_SUSPENDED,
@@ -612,6 +660,7 @@ struct dev_pm_info {
 	unsigned int		links_count;
 	enum rpm_request	request;
 	enum rpm_status		runtime_status;
+	enum rpm_status		last_status;
 	int			runtime_error;
 	int			autosuspend_delay;
 	u64			last_busy;
@@ -721,11 +770,11 @@ extern int dpm_suspend_late(pm_message_t state);
 extern int dpm_suspend(pm_message_t state);
 extern int dpm_prepare(pm_message_t state);
 
-extern void __suspend_report_result(const char *function, void *fn, int ret);
+extern void __suspend_report_result(const char *function, struct device *dev, void *fn, int ret);
 
-#define suspend_report_result(fn, ret)					\
+#define suspend_report_result(dev, fn, ret)				\
 	do {								\
-		__suspend_report_result(__func__, fn, ret);		\
+		__suspend_report_result(__func__, dev, fn, ret);	\
 	} while (0)
 
 extern int device_pm_wait_for_dev(struct device *sub, struct device *dev);
@@ -765,7 +814,7 @@ static inline int dpm_suspend_start(pm_message_t state)
 	return 0;
 }
 
-#define suspend_report_result(fn, ret)		do {} while (0)
+#define suspend_report_result(dev, fn, ret)	do {} while (0)
 
 static inline int device_pm_wait_for_dev(struct device *a, struct device *b)
 {
diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h
index 84150a22fd7c..0d85a63a1f78 100644
--- a/include/linux/pm_opp.h
+++ b/include/linux/pm_opp.h
@@ -32,14 +32,17 @@ enum dev_pm_opp_event {
  * @u_volt_min:	Minimum voltage in microvolts corresponding to this OPP
  * @u_volt_max:	Maximum voltage in microvolts corresponding to this OPP
  * @u_amp:	Maximum current drawn by the device in microamperes
+ * @u_watt:	Power used by the device in microwatts
  *
- * This structure stores the voltage/current values for a single power supply.
+ * This structure stores the voltage/current/power values for a single power
+ * supply.
  */
 struct dev_pm_opp_supply {
 	unsigned long u_volt;
 	unsigned long u_volt_min;
 	unsigned long u_volt_max;
 	unsigned long u_amp;
+	unsigned long u_watt;
 };
 
 /**
@@ -94,6 +97,8 @@ void dev_pm_opp_put_opp_table(struct opp_table *opp_table);
 
 unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
 
+unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp);
+
 unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
 
 unsigned int dev_pm_opp_get_level(struct dev_pm_opp *opp);
@@ -156,9 +161,9 @@ int devm_pm_opp_set_clkname(struct device *dev, const char *name);
 struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
 void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table);
 int devm_pm_opp_register_set_opp_helper(struct device *dev, int (*set_opp)(struct dev_pm_set_opp_data *data));
-struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
+struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char * const *names, struct device ***virt_devs);
 void dev_pm_opp_detach_genpd(struct opp_table *opp_table);
-int devm_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs);
+int devm_pm_opp_attach_genpd(struct device *dev, const char * const *names, struct device ***virt_devs);
 struct dev_pm_opp *dev_pm_opp_xlate_required_opp(struct opp_table *src_table, struct opp_table *dst_table, struct dev_pm_opp *src_opp);
 int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate);
 int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
@@ -186,6 +191,11 @@ static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
 	return 0;
 }
 
+static inline unsigned long dev_pm_opp_get_power(struct dev_pm_opp *opp)
+{
+	return 0;
+}
+
 static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
 {
 	return 0;
@@ -376,7 +386,7 @@ static inline int devm_pm_opp_set_clkname(struct device *dev, const char *name)
 	return -EOPNOTSUPP;
 }
 
-static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char **names, struct device ***virt_devs)
+static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, const char * const *names, struct device ***virt_devs)
 {
 	return ERR_PTR(-EOPNOTSUPP);
 }
@@ -384,7 +394,7 @@ static inline struct opp_table *dev_pm_opp_attach_genpd(struct device *dev, cons
 static inline void dev_pm_opp_detach_genpd(struct opp_table *opp_table) {}
 
 static inline int devm_pm_opp_attach_genpd(struct device *dev,
-					   const char **names,
+					   const char * const *names,
 					   struct device ***virt_devs)
 {
 	return -EOPNOTSUPP;
@@ -439,7 +449,9 @@ static inline int dev_pm_opp_sync_regulators(struct device *dev)
 #if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
 int dev_pm_opp_of_add_table(struct device *dev);
 int dev_pm_opp_of_add_table_indexed(struct device *dev, int index);
+int devm_pm_opp_of_add_table_indexed(struct device *dev, int index);
 int dev_pm_opp_of_add_table_noclk(struct device *dev, int index);
+int devm_pm_opp_of_add_table_noclk(struct device *dev, int index);
 void dev_pm_opp_of_remove_table(struct device *dev);
 int devm_pm_opp_of_add_table(struct device *dev);
 int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
@@ -465,11 +477,21 @@ static inline int dev_pm_opp_of_add_table_indexed(struct device *dev, int index)
 	return -EOPNOTSUPP;
 }
 
+static inline int devm_pm_opp_of_add_table_indexed(struct device *dev, int index)
+{
+	return -EOPNOTSUPP;
+}
+
 static inline int dev_pm_opp_of_add_table_noclk(struct device *dev, int index)
 {
 	return -EOPNOTSUPP;
 }
 
+static inline int devm_pm_opp_of_add_table_noclk(struct device *dev, int index)
+{
+	return -EOPNOTSUPP;
+}
+
 static inline void dev_pm_opp_of_remove_table(struct device *dev)
 {
 }
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 222da43b7096..2bff6a10095d 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -22,6 +22,30 @@
 					    usage_count */
 #define RPM_AUTO		0x08	/* Use autosuspend_delay */
 
+/*
+ * Use this for defining a set of PM operations to be used in all situations
+ * (system suspend, hibernation or runtime PM).
+ *
+ * Note that the behaviour differs from the deprecated UNIVERSAL_DEV_PM_OPS()
+ * macro, which uses the provided callbacks for both runtime PM and system
+ * sleep, while DEFINE_RUNTIME_DEV_PM_OPS() uses pm_runtime_force_suspend()
+ * and pm_runtime_force_resume() for its system sleep callbacks.
+ *
+ * If the underlying dev_pm_ops struct symbol has to be exported, use
+ * EXPORT_RUNTIME_DEV_PM_OPS() or EXPORT_GPL_RUNTIME_DEV_PM_OPS() instead.
+ */
+#define DEFINE_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
+	_DEFINE_DEV_PM_OPS(name, pm_runtime_force_suspend, \
+			   pm_runtime_force_resume, suspend_fn, \
+			   resume_fn, idle_fn)
+
+#define EXPORT_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
+	_EXPORT_DEV_PM_OPS(name, pm_runtime_force_suspend, pm_runtime_force_resume, \
+			   suspend_fn, resume_fn, idle_fn, "")
+#define EXPORT_GPL_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
+	_EXPORT_DEV_PM_OPS(name, pm_runtime_force_suspend, pm_runtime_force_resume, \
+			   suspend_fn, resume_fn, idle_fn, "_gpl")
+
 #ifdef CONFIG_PM
 extern struct workqueue_struct *pm_wq;
 
@@ -58,6 +82,7 @@ extern void pm_runtime_get_suppliers(struct device *dev);
 extern void pm_runtime_put_suppliers(struct device *dev);
 extern void pm_runtime_new_link(struct device *dev);
 extern void pm_runtime_drop_link(struct device_link *link);
+extern void pm_runtime_release_supplier(struct device_link *link, bool check_idle);
 
 extern int devm_pm_runtime_enable(struct device *dev);
 
@@ -129,7 +154,7 @@ static inline bool pm_runtime_suspended(struct device *dev)
  * pm_runtime_active - Check whether or not a device is runtime-active.
  * @dev: Target device.
  *
- * Return %true if runtime PM is enabled for @dev and its runtime PM status is
+ * Return %true if runtime PM is disabled for @dev or its runtime PM status is
  * %RPM_ACTIVE, or %false otherwise.
  *
  * Note that the return value of this function can only be trusted if it is
@@ -283,6 +308,8 @@ static inline void pm_runtime_get_suppliers(struct device *dev) {}
 static inline void pm_runtime_put_suppliers(struct device *dev) {}
 static inline void pm_runtime_new_link(struct device *dev) {}
 static inline void pm_runtime_drop_link(struct device_link *link) {}
+static inline void pm_runtime_release_supplier(struct device_link *link,
+					       bool check_idle) {}
 
 #endif /* !CONFIG_PM */
 
@@ -540,6 +567,10 @@ static inline void pm_runtime_disable(struct device *dev)
  * Allow the runtime PM autosuspend mechanism to be used for @dev whenever
  * requested (or "autosuspend" will be handled as direct runtime-suspend for
  * it).
+ *
+ * NOTE: It's important to undo this with pm_runtime_dont_use_autosuspend()
+ * at driver exit time unless your driver initially enabled pm_runtime
+ * with devm_pm_runtime_enable() (which handles it for you).
  */
 static inline void pm_runtime_use_autosuspend(struct device *dev)
 {
diff --git a/include/linux/pm_wakeirq.h b/include/linux/pm_wakeirq.h
index cd5b62db9084..e63a63aa47a3 100644
--- a/include/linux/pm_wakeirq.h
+++ b/include/linux/pm_wakeirq.h
@@ -17,8 +17,8 @@
 #ifdef CONFIG_PM
 
 extern int dev_pm_set_wake_irq(struct device *dev, int irq);
-extern int dev_pm_set_dedicated_wake_irq(struct device *dev,
-					 int irq);
+extern int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq);
+extern int dev_pm_set_dedicated_wake_irq_reverse(struct device *dev, int irq);
 extern void dev_pm_clear_wake_irq(struct device *dev);
 extern void dev_pm_enable_wake_irq(struct device *dev);
 extern void dev_pm_disable_wake_irq(struct device *dev);
@@ -35,6 +35,11 @@ static inline int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq)
 	return 0;
 }
 
+static inline int dev_pm_set_dedicated_wake_irq_reverse(struct device *dev, int irq)
+{
+	return 0;
+}
+
 static inline void dev_pm_clear_wake_irq(struct device *dev)
 {
 }
diff --git a/include/linux/pmu.h b/include/linux/pmu.h
index 52453a24a24f..c677442d007c 100644
--- a/include/linux/pmu.h
+++ b/include/linux/pmu.h
@@ -13,7 +13,7 @@
 #include <uapi/linux/pmu.h>
 
 
-extern int find_via_pmu(void);
+extern int __init find_via_pmu(void);
 
 extern int pmu_request(struct adb_request *req,
 		void (*done)(struct adb_request *), int nbytes, ...);
diff --git a/include/linux/pnfs_osd_xdr.h b/include/linux/pnfs_osd_xdr.h
deleted file mode 100644
index 17d7d0d20eca..000000000000
--- a/include/linux/pnfs_osd_xdr.h
+++ /dev/null
@@ -1,317 +0,0 @@
-/*
- *  pNFS-osd on-the-wire data structures
- *
- *  Copyright (C) 2007 Panasas Inc. [year of first publication]
- *  All rights reserved.
- *
- *  Benny Halevy <bhalevy@panasas.com>
- *  Boaz Harrosh <ooo@electrozaur.com>
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2
- *  See the file COPYING included with this distribution for more details.
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that the following conditions
- *  are met:
- *
- *  1. Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *  3. Neither the name of the Panasas company nor the names of its
- *     contributors may be used to endorse or promote products derived
- *     from this software without specific prior written permission.
- *
- *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- *  DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- *  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef __PNFS_OSD_XDR_H__
-#define __PNFS_OSD_XDR_H__
-
-#include <linux/nfs_fs.h>
-
-/*
- * draft-ietf-nfsv4-minorversion-22
- * draft-ietf-nfsv4-pnfs-obj-12
- */
-
-/* Layout Structure */
-
-enum pnfs_osd_raid_algorithm4 {
-	PNFS_OSD_RAID_0		= 1,
-	PNFS_OSD_RAID_4		= 2,
-	PNFS_OSD_RAID_5		= 3,
-	PNFS_OSD_RAID_PQ	= 4     /* Reed-Solomon P+Q */
-};
-
-/*   struct pnfs_osd_data_map4 {
- *       uint32_t                    odm_num_comps;
- *       length4                     odm_stripe_unit;
- *       uint32_t                    odm_group_width;
- *       uint32_t                    odm_group_depth;
- *       uint32_t                    odm_mirror_cnt;
- *       pnfs_osd_raid_algorithm4    odm_raid_algorithm;
- *   };
- */
-struct pnfs_osd_data_map {
-	u32	odm_num_comps;
-	u64	odm_stripe_unit;
-	u32	odm_group_width;
-	u32	odm_group_depth;
-	u32	odm_mirror_cnt;
-	u32	odm_raid_algorithm;
-};
-
-/*   struct pnfs_osd_objid4 {
- *       deviceid4       oid_device_id;
- *       uint64_t        oid_partition_id;
- *       uint64_t        oid_object_id;
- *   };
- */
-struct pnfs_osd_objid {
-	struct nfs4_deviceid	oid_device_id;
-	u64			oid_partition_id;
-	u64			oid_object_id;
-};
-
-/* For printout. I use:
- * kprint("dev(%llx:%llx)", _DEVID_LO(pointer), _DEVID_HI(pointer));
- * BE style
- */
-#define _DEVID_LO(oid_device_id) \
-	(unsigned long long)be64_to_cpup((__be64 *)(oid_device_id)->data)
-
-#define _DEVID_HI(oid_device_id) \
-	(unsigned long long)be64_to_cpup(((__be64 *)(oid_device_id)->data) + 1)
-
-enum pnfs_osd_version {
-	PNFS_OSD_MISSING              = 0,
-	PNFS_OSD_VERSION_1            = 1,
-	PNFS_OSD_VERSION_2            = 2
-};
-
-struct pnfs_osd_opaque_cred {
-	u32 cred_len;
-	void *cred;
-};
-
-enum pnfs_osd_cap_key_sec {
-	PNFS_OSD_CAP_KEY_SEC_NONE     = 0,
-	PNFS_OSD_CAP_KEY_SEC_SSV      = 1,
-};
-
-/*   struct pnfs_osd_object_cred4 {
- *       pnfs_osd_objid4         oc_object_id;
- *       pnfs_osd_version4       oc_osd_version;
- *       pnfs_osd_cap_key_sec4   oc_cap_key_sec;
- *       opaque                  oc_capability_key<>;
- *       opaque                  oc_capability<>;
- *   };
- */
-struct pnfs_osd_object_cred {
-	struct pnfs_osd_objid		oc_object_id;
-	u32				oc_osd_version;
-	u32				oc_cap_key_sec;
-	struct pnfs_osd_opaque_cred	oc_cap_key;
-	struct pnfs_osd_opaque_cred	oc_cap;
-};
-
-/*   struct pnfs_osd_layout4 {
- *       pnfs_osd_data_map4      olo_map;
- *       uint32_t                olo_comps_index;
- *       pnfs_osd_object_cred4   olo_components<>;
- *   };
- */
-struct pnfs_osd_layout {
-	struct pnfs_osd_data_map	olo_map;
-	u32				olo_comps_index;
-	u32				olo_num_comps;
-	struct pnfs_osd_object_cred	*olo_comps;
-};
-
-/* Device Address */
-enum pnfs_osd_targetid_type {
-	OBJ_TARGET_ANON = 1,
-	OBJ_TARGET_SCSI_NAME = 2,
-	OBJ_TARGET_SCSI_DEVICE_ID = 3,
-};
-
-/*   union pnfs_osd_targetid4 switch (pnfs_osd_targetid_type4 oti_type) {
- *       case OBJ_TARGET_SCSI_NAME:
- *           string              oti_scsi_name<>;
- *
- *       case OBJ_TARGET_SCSI_DEVICE_ID:
- *           opaque              oti_scsi_device_id<>;
- *
- *       default:
- *           void;
- *   };
- *
- *   union pnfs_osd_targetaddr4 switch (bool ota_available) {
- *       case TRUE:
- *           netaddr4            ota_netaddr;
- *       case FALSE:
- *           void;
- *   };
- *
- *   struct pnfs_osd_deviceaddr4 {
- *       pnfs_osd_targetid4      oda_targetid;
- *       pnfs_osd_targetaddr4    oda_targetaddr;
- *       uint64_t                oda_lun;
- *       opaque                  oda_systemid<>;
- *       pnfs_osd_object_cred4   oda_root_obj_cred;
- *       opaque                  oda_osdname<>;
- *   };
- */
-struct pnfs_osd_targetid {
-	u32				oti_type;
-	struct nfs4_string		oti_scsi_device_id;
-};
-
-/*   struct netaddr4 {
- *       // see struct rpcb in RFC1833
- *       string r_netid<>;    // network id
- *       string r_addr<>;     // universal address
- *   };
- */
-struct pnfs_osd_net_addr {
-	struct nfs4_string	r_netid;
-	struct nfs4_string	r_addr;
-};
-
-struct pnfs_osd_targetaddr {
-	u32				ota_available;
-	struct pnfs_osd_net_addr	ota_netaddr;
-};
-
-struct pnfs_osd_deviceaddr {
-	struct pnfs_osd_targetid	oda_targetid;
-	struct pnfs_osd_targetaddr	oda_targetaddr;
-	u8				oda_lun[8];
-	struct nfs4_string		oda_systemid;
-	struct pnfs_osd_object_cred	oda_root_obj_cred;
-	struct nfs4_string		oda_osdname;
-};
-
-/* LAYOUTCOMMIT: layoutupdate */
-
-/*   union pnfs_osd_deltaspaceused4 switch (bool dsu_valid) {
- *       case TRUE:
- *           int64_t     dsu_delta;
- *       case FALSE:
- *           void;
- *   };
- *
- *   struct pnfs_osd_layoutupdate4 {
- *       pnfs_osd_deltaspaceused4    olu_delta_space_used;
- *       bool                        olu_ioerr_flag;
- *   };
- */
-struct pnfs_osd_layoutupdate {
-	u32	dsu_valid;
-	s64	dsu_delta;
-	u32	olu_ioerr_flag;
-};
-
-/* LAYOUTRETURN: I/O Rrror Report */
-
-enum pnfs_osd_errno {
-	PNFS_OSD_ERR_EIO		= 1,
-	PNFS_OSD_ERR_NOT_FOUND		= 2,
-	PNFS_OSD_ERR_NO_SPACE		= 3,
-	PNFS_OSD_ERR_BAD_CRED		= 4,
-	PNFS_OSD_ERR_NO_ACCESS		= 5,
-	PNFS_OSD_ERR_UNREACHABLE	= 6,
-	PNFS_OSD_ERR_RESOURCE		= 7
-};
-
-/*   struct pnfs_osd_ioerr4 {
- *       pnfs_osd_objid4     oer_component;
- *       length4             oer_comp_offset;
- *       length4             oer_comp_length;
- *       bool                oer_iswrite;
- *       pnfs_osd_errno4     oer_errno;
- *   };
- */
-struct pnfs_osd_ioerr {
-	struct pnfs_osd_objid	oer_component;
-	u64			oer_comp_offset;
-	u64			oer_comp_length;
-	u32			oer_iswrite;
-	u32			oer_errno;
-};
-
-/* OSD XDR Client API */
-/* Layout helpers */
-/* Layout decoding is done in two parts:
- * 1. First Call pnfs_osd_xdr_decode_layout_map to read in only the header part
- *    of the layout. @iter members need not be initialized.
- *    Returned:
- *             @layout members are set. (@layout->olo_comps set to NULL).
- *
- *             Zero on success, or negative error if passed xdr is broken.
- *
- * 2. 2nd Call pnfs_osd_xdr_decode_layout_comp() in a loop until it returns
- *    false, to decode the next component.
- *    Returned:
- *       true if there is more to decode or false if we are done or error.
- *
- * Example:
- *	struct pnfs_osd_xdr_decode_layout_iter iter;
- *	struct pnfs_osd_layout layout;
- *	struct pnfs_osd_object_cred comp;
- *	int status;
- *
- *	status = pnfs_osd_xdr_decode_layout_map(&layout, &iter, xdr);
- *	if (unlikely(status))
- *		goto err;
- *	while(pnfs_osd_xdr_decode_layout_comp(&comp, &iter, xdr, &status)) {
- *		// All of @comp strings point to inside the xdr_buffer
- *		// or scrach buffer. Copy them out to user memory eg.
- *		copy_single_comp(dest_comp++, &comp);
- *	}
- *	if (unlikely(status))
- *		goto err;
- */
-
-struct pnfs_osd_xdr_decode_layout_iter {
-	unsigned total_comps;
-	unsigned decoded_comps;
-};
-
-extern int pnfs_osd_xdr_decode_layout_map(struct pnfs_osd_layout *layout,
-	struct pnfs_osd_xdr_decode_layout_iter *iter, struct xdr_stream *xdr);
-
-extern bool pnfs_osd_xdr_decode_layout_comp(struct pnfs_osd_object_cred *comp,
-	struct pnfs_osd_xdr_decode_layout_iter *iter, struct xdr_stream *xdr,
-	int *err);
-
-/* Device Info helpers */
-
-/* Note: All strings inside @deviceaddr point to space inside @p.
- * @p should stay valid while @deviceaddr is in use.
- */
-extern void pnfs_osd_xdr_decode_deviceaddr(
-	struct pnfs_osd_deviceaddr *deviceaddr, __be32 *p);
-
-/* layoutupdate (layout_commit) xdr helpers */
-extern int
-pnfs_osd_xdr_encode_layoutupdate(struct xdr_stream *xdr,
-				 struct pnfs_osd_layoutupdate *lou);
-
-/* osd_ioerror encoding (layout_return) */
-extern __be32 *pnfs_osd_xdr_ioerr_reserve_space(struct xdr_stream *xdr);
-extern void pnfs_osd_xdr_encode_ioerr(__be32 *p, struct pnfs_osd_ioerr *ioerr);
-
-#endif /* __PNFS_OSD_XDR_H__ */
diff --git a/include/linux/poll.h b/include/linux/poll.h
index 1cdc32b1f1b0..a9e0e1c2d1f2 100644
--- a/include/linux/poll.h
+++ b/include/linux/poll.h
@@ -8,12 +8,10 @@
 #include <linux/wait.h>
 #include <linux/string.h>
 #include <linux/fs.h>
-#include <linux/sysctl.h>
 #include <linux/uaccess.h>
 #include <uapi/linux/poll.h>
 #include <uapi/linux/eventpoll.h>
 
-extern struct ctl_table epoll_table[]; /* for sysctl */
 /* ~832 bytes of stack space used max in sys_select/sys_poll before allocating
    additional memory. */
 #ifdef __clang__
diff --git a/include/linux/posix-timers.h b/include/linux/posix-timers.h
index 00fef0064355..2c6e99ca48af 100644
--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -6,7 +6,6 @@
 #include <linux/list.h>
 #include <linux/alarmtimer.h>
 #include <linux/timerqueue.h>
-#include <linux/task_work.h>
 
 struct kernel_siginfo;
 struct task_struct;
@@ -184,8 +183,10 @@ static inline void posix_cputimers_group_init(struct posix_cputimers *pct,
 #endif
 
 #ifdef CONFIG_POSIX_CPU_TIMERS_TASK_WORK
+void clear_posix_cputimers_work(struct task_struct *p);
 void posix_cputimers_init_work(void);
 #else
+static inline void clear_posix_cputimers_work(struct task_struct *p) { }
 static inline void posix_cputimers_init_work(void) { }
 #endif
 
@@ -251,7 +252,7 @@ void posix_cpu_timers_exit_group(struct task_struct *task);
 void set_process_cpu_timer(struct task_struct *task, unsigned int clock_idx,
 			   u64 *newval, u64 *oldval);
 
-void update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new);
+int update_rlimit_cpu(struct task_struct *task, unsigned long rlim_new);
 
 void posixtimer_rearm(struct kernel_siginfo *info);
 #endif
diff --git a/include/linux/posix_acl_xattr.h b/include/linux/posix_acl_xattr.h
index 060e8d203181..1766e1de6956 100644
--- a/include/linux/posix_acl_xattr.h
+++ b/include/linux/posix_acl_xattr.h
@@ -34,15 +34,19 @@ posix_acl_xattr_count(size_t size)
 
 #ifdef CONFIG_FS_POSIX_ACL
 void posix_acl_fix_xattr_from_user(struct user_namespace *mnt_userns,
+				   struct inode *inode,
 				   void *value, size_t size);
 void posix_acl_fix_xattr_to_user(struct user_namespace *mnt_userns,
+				   struct inode *inode,
 				 void *value, size_t size);
 #else
 static inline void posix_acl_fix_xattr_from_user(struct user_namespace *mnt_userns,
+						 struct inode *inode,
 						 void *value, size_t size)
 {
 }
 static inline void posix_acl_fix_xattr_to_user(struct user_namespace *mnt_userns,
+					       struct inode *inode,
 					       void *value, size_t size)
 {
 }
diff --git a/include/linux/power/bq25890_charger.h b/include/linux/power/bq25890_charger.h
new file mode 100644
index 000000000000..c706ddb77a08
--- /dev/null
+++ b/include/linux/power/bq25890_charger.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Platform data for the TI bq25890 battery charger driver.
+ */
+
+#ifndef _BQ25890_CHARGER_H_
+#define _BQ25890_CHARGER_H_
+
+struct regulator_init_data;
+
+struct bq25890_platform_data {
+	const struct regulator_init_data *regulator_init_data;
+};
+
+#endif
diff --git a/include/linux/power/max17042_battery.h b/include/linux/power/max17042_battery.h
index dd24756a8af7..c417abd2ab70 100644
--- a/include/linux/power/max17042_battery.h
+++ b/include/linux/power/max17042_battery.h
@@ -78,7 +78,7 @@ enum max17042_register {
 	MAX17042_T_empty	= 0x34,
 
 	MAX17042_FullCAP0       = 0x35,
-	MAX17042_LAvg_empty	= 0x36,
+	MAX17042_IAvg_empty	= 0x36,
 	MAX17042_FCTC		= 0x37,
 	MAX17042_RCOMP0		= 0x38,
 	MAX17042_TempCo		= 0x39,
@@ -221,7 +221,7 @@ struct max17042_config_data {
 	u16	fullcap;	/* 0x10 */
 	u16	fullcapnom;	/* 0x23 */
 	u16	socempty;	/* 0x33 */
-	u16	lavg_empty;	/* 0x36 */
+	u16	iavg_empty;	/* 0x36 */
 	u16	dqacc;		/* 0x45 */
 	u16	dpacc;		/* 0x46 */
 	u16	qrtbl00;	/* 0x12 */
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 9ca1f120a211..cb380c1d9459 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -49,6 +49,7 @@ enum {
 	POWER_SUPPLY_CHARGE_TYPE_ADAPTIVE,	/* dynamically adjusted speed */
 	POWER_SUPPLY_CHARGE_TYPE_CUSTOM,	/* use CHARGE_CONTROL_* props */
 	POWER_SUPPLY_CHARGE_TYPE_LONGLIFE,	/* slow speed, longer life */
+	POWER_SUPPLY_CHARGE_TYPE_BYPASS,	/* bypassing the charger */
 };
 
 enum {
@@ -66,6 +67,7 @@ enum {
 	POWER_SUPPLY_HEALTH_WARM,
 	POWER_SUPPLY_HEALTH_COOL,
 	POWER_SUPPLY_HEALTH_HOT,
+	POWER_SUPPLY_HEALTH_NO_BATTERY,
 };
 
 enum {
@@ -132,6 +134,7 @@ enum power_supply_property {
 	POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
 	POWER_SUPPLY_PROP_CHARGE_CONTROL_START_THRESHOLD, /* in percents! */
 	POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD, /* in percents! */
+	POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR,
 	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
 	POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
 	POWER_SUPPLY_PROP_INPUT_POWER_LIMIT,
@@ -202,6 +205,12 @@ enum power_supply_usb_type {
 	POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID,	/* Apple Charging Method */
 };
 
+enum power_supply_charge_behaviour {
+	POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO = 0,
+	POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE,
+	POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE,
+};
+
 enum power_supply_notifier_events {
 	PSY_EVENT_PROP_CHANGED,
 };
@@ -340,43 +349,385 @@ struct power_supply_resistance_temp_table {
 	int resistance;	/* internal resistance percent */
 };
 
+struct power_supply_vbat_ri_table {
+	int vbat_uv;	/* Battery voltage in microvolt */
+	int ri_uohm;	/* Internal resistance in microohm */
+};
+
+/**
+ * struct power_supply_maintenance_charge_table - setting for maintenace charging
+ * @charge_current_max_ua: maintenance charging current that is used to keep
+ *   the charge of the battery full as current is consumed after full charging.
+ *   The corresponding charge_voltage_max_uv is used as a safeguard: when we
+ *   reach this voltage the maintenance charging current is turned off. It is
+ *   turned back on if we fall below this voltage.
+ * @charge_voltage_max_uv: maintenance charging voltage that is usually a bit
+ *   lower than the constant_charge_voltage_max_uv. We can apply this settings
+ *   charge_current_max_ua until we get back up to this voltage.
+ * @safety_timer_minutes: maintenance charging safety timer, with an expiry
+ *   time in minutes. We will only use maintenance charging in this setting
+ *   for a certain amount of time, then we will first move to the next
+ *   maintenance charge current and voltage pair in respective array and wait
+ *   for the next safety timer timeout, or, if we reached the last maintencance
+ *   charging setting, disable charging until we reach
+ *   charge_restart_voltage_uv and restart ordinary CC/CV charging from there.
+ *   These timers should be chosen to align with the typical discharge curve
+ *   for the battery.
+ *
+ * When the main CC/CV charging is complete the battery can optionally be
+ * maintenance charged at the voltages from this table: a table of settings is
+ * traversed using a slightly lower current and voltage than what is used for
+ * CC/CV charging. The maintenance charging will for safety reasons not go on
+ * indefinately: we lower the current and voltage with successive maintenance
+ * settings, then disable charging completely after we reach the last one,
+ * and after that we do not restart charging until we reach
+ * charge_restart_voltage_uv (see struct power_supply_battery_info) and restart
+ * ordinary CC/CV charging from there.
+ *
+ * As an example, a Samsung EB425161LA Lithium-Ion battery is CC/CV charged
+ * at 900mA to 4340mV, then maintenance charged at 600mA and 4150mV for
+ * 60 hours, then maintenance charged at 600mA and 4100mV for 200 hours.
+ * After this the charge cycle is restarted waiting for
+ * charge_restart_voltage_uv.
+ *
+ * For most mobile electronics this type of maintenance charging is enough for
+ * the user to disconnect the device and make use of it before both maintenance
+ * charging cycles are complete.
+ */
+struct power_supply_maintenance_charge_table {
+	int charge_current_max_ua;
+	int charge_voltage_max_uv;
+	int charge_safety_timer_minutes;
+};
+
 #define POWER_SUPPLY_OCV_TEMP_MAX 20
 
-/*
+/**
+ * struct power_supply_battery_info - information about batteries
+ * @technology: from the POWER_SUPPLY_TECHNOLOGY_* enum
+ * @energy_full_design_uwh: energy content when fully charged in microwatt
+ *   hours
+ * @charge_full_design_uah: charge content when fully charged in microampere
+ *   hours
+ * @voltage_min_design_uv: minimum voltage across the poles when the battery
+ *   is at minimum voltage level in microvolts. If the voltage drops below this
+ *   level the battery will need precharging when using CC/CV charging.
+ * @voltage_max_design_uv: voltage across the poles when the battery is fully
+ *   charged in microvolts. This is the "nominal voltage" i.e. the voltage
+ *   printed on the label of the battery.
+ * @tricklecharge_current_ua: the tricklecharge current used when trickle
+ *   charging the battery in microamperes. This is the charging phase when the
+ *   battery is completely empty and we need to carefully trickle in some
+ *   charge until we reach the precharging voltage.
+ * @precharge_current_ua: current to use in the precharge phase in microamperes,
+ *   the precharge rate is limited by limiting the current to this value.
+ * @precharge_voltage_max_uv: the maximum voltage allowed when precharging in
+ *   microvolts. When we pass this voltage we will nominally switch over to the
+ *   CC (constant current) charging phase defined by constant_charge_current_ua
+ *   and constant_charge_voltage_max_uv.
+ * @charge_term_current_ua: when the current in the CV (constant voltage)
+ *   charging phase drops below this value in microamperes the charging will
+ *   terminate completely and not restart until the voltage over the battery
+ *   poles reach charge_restart_voltage_uv unless we use maintenance charging.
+ * @charge_restart_voltage_uv: when the battery has been fully charged by
+ *   CC/CV charging and charging has been disabled, and the voltage subsequently
+ *   drops below this value in microvolts, the charging will be restarted
+ *   (typically using CV charging).
+ * @overvoltage_limit_uv: If the voltage exceeds the nominal voltage
+ *   voltage_max_design_uv and we reach this voltage level, all charging must
+ *   stop and emergency procedures take place, such as shutting down the system
+ *   in some cases.
+ * @constant_charge_current_max_ua: current in microamperes to use in the CC
+ *   (constant current) charging phase. The charging rate is limited
+ *   by this current. This is the main charging phase and as the current is
+ *   constant into the battery the voltage slowly ascends to
+ *   constant_charge_voltage_max_uv.
+ * @constant_charge_voltage_max_uv: voltage in microvolts signifying the end of
+ *   the CC (constant current) charging phase and the beginning of the CV
+ *   (constant voltage) charging phase.
+ * @maintenance_charge: an array of maintenance charging settings to be used
+ *   after the main CC/CV charging phase is complete.
+ * @maintenance_charge_size: the number of maintenance charging settings in
+ *   maintenance_charge.
+ * @alert_low_temp_charge_current_ua: The charging current to use if the battery
+ *   enters low alert temperature, i.e. if the internal temperature is between
+ *   temp_alert_min and temp_min. No matter the charging phase, this
+ *   and alert_high_temp_charge_voltage_uv will be applied.
+ * @alert_low_temp_charge_voltage_uv: Same as alert_low_temp_charge_current_ua,
+ *   but for the charging voltage.
+ * @alert_high_temp_charge_current_ua: The charging current to use if the
+ *   battery enters high alert temperature, i.e. if the internal temperature is
+ *   between temp_alert_max and temp_max. No matter the charging phase, this
+ *   and alert_high_temp_charge_voltage_uv will be applied, usually lowering
+ *   the charging current as an evasive manouver.
+ * @alert_high_temp_charge_voltage_uv: Same as
+ *   alert_high_temp_charge_current_ua, but for the charging voltage.
+ * @factory_internal_resistance_uohm: the internal resistance of the battery
+ *   at fabrication time, expressed in microohms. This resistance will vary
+ *   depending on the lifetime and charge of the battery, so this is just a
+ *   nominal ballpark figure. This internal resistance is given for the state
+ *   when the battery is discharging.
+ * @factory_internal_resistance_charging_uohm: the internal resistance of the
+ *   battery at fabrication time while charging, expressed in microohms.
+ *   The charging process will affect the internal resistance of the battery
+ *   so this value provides a better resistance under these circumstances.
+ *   This resistance will vary depending on the lifetime and charge of the
+ *   battery, so this is just a nominal ballpark figure.
+ * @ocv_temp: array indicating the open circuit voltage (OCV) capacity
+ *   temperature indices. This is an array of temperatures in degrees Celsius
+ *   indicating which capacity table to use for a certain temperature, since
+ *   the capacity for reasons of chemistry will be different at different
+ *   temperatures. Determining capacity is a multivariate problem and the
+ *   temperature is the first variable we determine.
+ * @temp_ambient_alert_min: the battery will go outside of operating conditions
+ *   when the ambient temperature goes below this temperature in degrees
+ *   Celsius.
+ * @temp_ambient_alert_max: the battery will go outside of operating conditions
+ *   when the ambient temperature goes above this temperature in degrees
+ *   Celsius.
+ * @temp_alert_min: the battery should issue an alert if the internal
+ *   temperature goes below this temperature in degrees Celsius.
+ * @temp_alert_max: the battery should issue an alert if the internal
+ *   temperature goes above this temperature in degrees Celsius.
+ * @temp_min: the battery will go outside of operating conditions when
+ *   the internal temperature goes below this temperature in degrees Celsius.
+ *   Normally this means the system should shut down.
+ * @temp_max: the battery will go outside of operating conditions when
+ *   the internal temperature goes above this temperature in degrees Celsius.
+ *   Normally this means the system should shut down.
+ * @ocv_table: for each entry in ocv_temp there is a corresponding entry in
+ *   ocv_table and a size for each entry in ocv_table_size. These arrays
+ *   determine the capacity in percent in relation to the voltage in microvolts
+ *   at the indexed temperature.
+ * @ocv_table_size: for each entry in ocv_temp this array is giving the size of
+ *   each entry in the array of capacity arrays in ocv_table.
+ * @resist_table: this is a table that correlates a battery temperature to the
+ *   expected internal resistance at this temperature. The resistance is given
+ *   as a percentage of factory_internal_resistance_uohm. Knowing the
+ *   resistance of the battery is usually necessary for calculating the open
+ *   circuit voltage (OCV) that is then used with the ocv_table to calculate
+ *   the capacity of the battery. The resist_table must be ordered descending
+ *   by temperature: highest temperature with lowest resistance first, lowest
+ *   temperature with highest resistance last.
+ * @resist_table_size: the number of items in the resist_table.
+ * @vbat2ri_discharging: this is a table that correlates Battery voltage (VBAT)
+ *   to internal resistance (Ri). The resistance is given in microohm for the
+ *   corresponding voltage in microvolts. The internal resistance is used to
+ *   determine the open circuit voltage so that we can determine the capacity
+ *   of the battery. These voltages to resistance tables apply when the battery
+ *   is discharging. The table must be ordered descending by voltage: highest
+ *   voltage first.
+ * @vbat2ri_discharging_size: the number of items in the vbat2ri_discharging
+ *   table.
+ * @vbat2ri_charging: same function as vbat2ri_discharging but for the state
+ *   when the battery is charging. Being under charge changes the battery's
+ *   internal resistance characteristics so a separate table is needed.*
+ *   The table must be ordered descending by voltage: highest voltage first.
+ * @vbat2ri_charging_size: the number of items in the vbat2ri_charging
+ *   table.
+ * @bti_resistance_ohm: The Battery Type Indicator (BIT) nominal resistance
+ *   in ohms for this battery, if an identification resistor is mounted
+ *   between a third battery terminal and ground. This scheme is used by a lot
+ *   of mobile device batteries.
+ * @bti_resistance_tolerance: The tolerance in percent of the BTI resistance,
+ *   for example 10 for +/- 10%, if the bti_resistance is set to 7000 and the
+ *   tolerance is 10% we will detect a proper battery if the BTI resistance
+ *   is between 6300 and 7700 Ohm.
+ *
  * This is the recommended struct to manage static battery parameters,
  * populated by power_supply_get_battery_info(). Most platform drivers should
  * use these for consistency.
+ *
  * Its field names must correspond to elements in enum power_supply_property.
- * The default field value is -EINVAL.
- * Power supply class itself doesn't use this.
+ * The default field value is -EINVAL or NULL for pointers.
+ *
+ * CC/CV CHARGING:
+ *
+ * The charging parameters here assume a CC/CV charging scheme. This method
+ * is most common with Lithium Ion batteries (other methods are possible) and
+ * looks as follows:
+ *
+ * ^ Battery voltage
+ * |                                               --- overvoltage_limit_uv
+ * |
+ * |                    ...................................................
+ * |                 .. constant_charge_voltage_max_uv
+ * |              ..
+ * |             .
+ * |            .
+ * |           .
+ * |          .
+ * |         .
+ * |     .. precharge_voltage_max_uv
+ * |  ..
+ * |. (trickle charging)
+ * +------------------------------------------------------------------> time
+ *
+ * ^ Current into the battery
+ * |
+ * |      ............. constant_charge_current_max_ua
+ * |      .            .
+ * |      .             .
+ * |      .              .
+ * |      .               .
+ * |      .                ..
+ * |      .                  ....
+ * |      .                       .....
+ * |    ... precharge_current_ua       .......  charge_term_current_ua
+ * |    .                                    .
+ * |    .                                    .
+ * |.... tricklecharge_current_ua            .
+ * |                                         .
+ * +-----------------------------------------------------------------> time
+ *
+ * These diagrams are synchronized on time and the voltage and current
+ * follow each other.
+ *
+ * With CC/CV charging commence over time like this for an empty battery:
+ *
+ * 1. When the battery is completely empty it may need to be charged with
+ *    an especially small current so that electrons just "trickle in",
+ *    this is the tricklecharge_current_ua.
+ *
+ * 2. Next a small initial pre-charge current (precharge_current_ua)
+ *    is applied if the voltage is below precharge_voltage_max_uv until we
+ *    reach precharge_voltage_max_uv. CAUTION: in some texts this is referred
+ *    to as "trickle charging" but the use in the Linux kernel is different
+ *    see below!
+ *
+ * 3. Then the main charging current is applied, which is called the constant
+ *    current (CC) phase. A current regulator is set up to allow
+ *    constant_charge_current_max_ua of current to flow into the battery.
+ *    The chemical reaction in the battery will make the voltage go up as
+ *    charge goes into the battery. This current is applied until we reach
+ *    the constant_charge_voltage_max_uv voltage.
+ *
+ * 4. At this voltage we switch over to the constant voltage (CV) phase. This
+ *    means we allow current to go into the battery, but we keep the voltage
+ *    fixed. This current will continue to charge the battery while keeping
+ *    the voltage the same. A chemical reaction in the battery goes on
+ *    storing energy without affecting the voltage. Over time the current
+ *    will slowly drop and when we reach charge_term_current_ua we will
+ *    end the constant voltage phase.
+ *
+ * After this the battery is fully charged, and if we do not support maintenance
+ * charging, the charging will not restart until power dissipation makes the
+ * voltage fall so that we reach charge_restart_voltage_uv and at this point
+ * we restart charging at the appropriate phase, usually this will be inside
+ * the CV phase.
+ *
+ * If we support maintenance charging the voltage is however kept high after
+ * the CV phase with a very low current. This is meant to let the same charge
+ * go in for usage while the charger is still connected, mainly for
+ * dissipation for the power consuming entity while connected to the
+ * charger.
+ *
+ * All charging MUST terminate if the overvoltage_limit_uv is ever reached.
+ * Overcharging Lithium Ion cells can be DANGEROUS and lead to fire or
+ * explosions.
+ *
+ * DETERMINING BATTERY CAPACITY:
+ *
+ * Several members of the struct deal with trying to determine the remaining
+ * capacity in the battery, usually as a percentage of charge. In practice
+ * many chargers uses a so-called fuel gauge or coloumb counter that measure
+ * how much charge goes into the battery and how much goes out (+/- leak
+ * consumption). This does not help if we do not know how much capacity the
+ * battery has to begin with, such as when it is first used or was taken out
+ * and charged in a separate charger. Therefore many capacity algorithms use
+ * the open circuit voltage with a look-up table to determine the rough
+ * capacity of the battery. The open circuit voltage can be conceptualized
+ * with an ideal voltage source (V) in series with an internal resistance (Ri)
+ * like this:
+ *
+ *      +-------> IBAT >----------------+
+ *      |                    ^          |
+ *     [ ] Ri                |          |
+ *      |                    | VBAT     |
+ *      o <----------        |          |
+ *     +|           ^        |         [ ] Rload
+ *    .---.         |        |          |
+ *    | V |         | OCV    |          |
+ *    '---'         |        |          |
+ *      |           |        |          |
+ *  GND +-------------------------------+
+ *
+ * If we disconnect the load (here simplified as a fixed resistance Rload)
+ * and measure VBAT with a infinite impedance voltage meter we will get
+ * VBAT = OCV and this assumption is sometimes made even under load, assuming
+ * Rload is insignificant. However this will be of dubious quality because the
+ * load is rarely that small and Ri is strongly nonlinear depending on
+ * temperature and how much capacity is left in the battery due to the
+ * chemistry involved.
+ *
+ * In many practical applications we cannot just disconnect the battery from
+ * the load, so instead we often try to measure the instantaneous IBAT (the
+ * current out from the battery), estimate the Ri and thus calculate the
+ * voltage drop over Ri and compensate like this:
+ *
+ *   OCV = VBAT - (IBAT * Ri)
+ *
+ * The tables vbat2ri_discharging and vbat2ri_charging are used to determine
+ * (by interpolation) the Ri from the VBAT under load. These curves are highly
+ * nonlinear and may need many datapoints but can be found in datasheets for
+ * some batteries. This gives the compensated open circuit voltage (OCV) for
+ * the battery even under load. Using this method will also compensate for
+ * temperature changes in the environment: this will also make the internal
+ * resistance change, and it will affect the VBAT under load, so correlating
+ * VBAT to Ri takes both remaining capacity and temperature into consideration.
+ *
+ * Alternatively a manufacturer can specify how the capacity of the battery
+ * is dependent on the battery temperature which is the main factor affecting
+ * Ri. As we know all checmical reactions are faster when it is warm and slower
+ * when it is cold. You can put in 1500mAh and only get 800mAh out before the
+ * voltage drops too low for example. This effect is also highly nonlinear and
+ * the purpose of the table resist_table: this will take a temperature and
+ * tell us how big percentage of Ri the specified temperature correlates to.
+ * Usually we have 100% of the factory_internal_resistance_uohm at 25 degrees
+ * Celsius.
+ *
+ * The power supply class itself doesn't use this struct as of now.
  */
 
 struct power_supply_battery_info {
-	unsigned int technology;	    /* from the enum above */
-	int energy_full_design_uwh;	    /* microWatt-hours */
-	int charge_full_design_uah;	    /* microAmp-hours */
-	int voltage_min_design_uv;	    /* microVolts */
-	int voltage_max_design_uv;	    /* microVolts */
-	int tricklecharge_current_ua;	    /* microAmps */
-	int precharge_current_ua;	    /* microAmps */
-	int precharge_voltage_max_uv;	    /* microVolts */
-	int charge_term_current_ua;	    /* microAmps */
-	int charge_restart_voltage_uv;	    /* microVolts */
-	int overvoltage_limit_uv;	    /* microVolts */
-	int constant_charge_current_max_ua; /* microAmps */
-	int constant_charge_voltage_max_uv; /* microVolts */
-	int factory_internal_resistance_uohm;   /* microOhms */
-	int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX];/* celsius */
-	int temp_ambient_alert_min;             /* celsius */
-	int temp_ambient_alert_max;             /* celsius */
-	int temp_alert_min;                     /* celsius */
-	int temp_alert_max;                     /* celsius */
-	int temp_min;                           /* celsius */
-	int temp_max;                           /* celsius */
+	unsigned int technology;
+	int energy_full_design_uwh;
+	int charge_full_design_uah;
+	int voltage_min_design_uv;
+	int voltage_max_design_uv;
+	int tricklecharge_current_ua;
+	int precharge_current_ua;
+	int precharge_voltage_max_uv;
+	int charge_term_current_ua;
+	int charge_restart_voltage_uv;
+	int overvoltage_limit_uv;
+	int constant_charge_current_max_ua;
+	int constant_charge_voltage_max_uv;
+	struct power_supply_maintenance_charge_table *maintenance_charge;
+	int maintenance_charge_size;
+	int alert_low_temp_charge_current_ua;
+	int alert_low_temp_charge_voltage_uv;
+	int alert_high_temp_charge_current_ua;
+	int alert_high_temp_charge_voltage_uv;
+	int factory_internal_resistance_uohm;
+	int factory_internal_resistance_charging_uohm;
+	int ocv_temp[POWER_SUPPLY_OCV_TEMP_MAX];
+	int temp_ambient_alert_min;
+	int temp_ambient_alert_max;
+	int temp_alert_min;
+	int temp_alert_max;
+	int temp_min;
+	int temp_max;
 	struct power_supply_battery_ocv_table *ocv_table[POWER_SUPPLY_OCV_TEMP_MAX];
 	int ocv_table_size[POWER_SUPPLY_OCV_TEMP_MAX];
 	struct power_supply_resistance_temp_table *resist_table;
 	int resist_table_size;
+	struct power_supply_vbat_ri_table *vbat2ri_discharging;
+	int vbat2ri_discharging_size;
+	struct power_supply_vbat_ri_table *vbat2ri_charging;
+	int vbat2ri_charging_size;
+	int bti_resistance_ohm;
+	int bti_resistance_tolerance;
 };
 
 extern struct atomic_notifier_head power_supply_notifier;
@@ -405,7 +756,7 @@ devm_power_supply_get_by_phandle(struct device *dev, const char *property)
 #endif /* CONFIG_OF */
 
 extern int power_supply_get_battery_info(struct power_supply *psy,
-					 struct power_supply_battery_info *info);
+					 struct power_supply_battery_info **info_out);
 extern void power_supply_put_battery_info(struct power_supply *psy,
 					  struct power_supply_battery_info *info);
 extern int power_supply_ocv2cap_simple(struct power_supply_battery_ocv_table *table,
@@ -418,12 +769,43 @@ extern int power_supply_batinfo_ocv2cap(struct power_supply_battery_info *info,
 extern int
 power_supply_temp2resist_simple(struct power_supply_resistance_temp_table *table,
 				int table_len, int temp);
+extern int power_supply_vbat2ri(struct power_supply_battery_info *info,
+				int vbat_uv, bool charging);
+extern struct power_supply_maintenance_charge_table *
+power_supply_get_maintenance_charging_setting(struct power_supply_battery_info *info, int index);
+extern bool power_supply_battery_bti_in_range(struct power_supply_battery_info *info,
+					      int resistance);
 extern void power_supply_changed(struct power_supply *psy);
 extern int power_supply_am_i_supplied(struct power_supply *psy);
-extern int power_supply_set_input_current_limit_from_supplier(
-					 struct power_supply *psy);
+int power_supply_get_property_from_supplier(struct power_supply *psy,
+					    enum power_supply_property psp,
+					    union power_supply_propval *val);
 extern int power_supply_set_battery_charged(struct power_supply *psy);
 
+static inline bool
+power_supply_supports_maintenance_charging(struct power_supply_battery_info *info)
+{
+	struct power_supply_maintenance_charge_table *mt;
+
+	mt = power_supply_get_maintenance_charging_setting(info, 0);
+
+	return (mt != NULL);
+}
+
+static inline bool
+power_supply_supports_vbat2ri(struct power_supply_battery_info *info)
+{
+	return ((info->vbat2ri_discharging != NULL) &&
+		info->vbat2ri_discharging_size > 0);
+}
+
+static inline bool
+power_supply_supports_temp2ri(struct power_supply_battery_info *info)
+{
+	return ((info->resist_table != NULL) &&
+		info->resist_table_size > 0);
+}
+
 #ifdef CONFIG_POWER_SUPPLY
 extern int power_supply_is_system_supplied(void);
 #else
@@ -539,4 +921,28 @@ static inline
 void power_supply_remove_hwmon_sysfs(struct power_supply *psy) {}
 #endif
 
+#ifdef CONFIG_SYSFS
+ssize_t power_supply_charge_behaviour_show(struct device *dev,
+					   unsigned int available_behaviours,
+					   enum power_supply_charge_behaviour behaviour,
+					   char *buf);
+
+int power_supply_charge_behaviour_parse(unsigned int available_behaviours, const char *buf);
+#else
+static inline
+ssize_t power_supply_charge_behaviour_show(struct device *dev,
+					   unsigned int available_behaviours,
+					   enum power_supply_charge_behaviour behaviour,
+					   char *buf)
+{
+	return -EOPNOTSUPP;
+}
+
+static inline int power_supply_charge_behaviour_parse(unsigned int available_behaviours,
+						      const char *buf)
+{
+	return -EOPNOTSUPP;
+}
+#endif
+
 #endif /* __LINUX_POWER_SUPPLY_H__ */
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 4d244e295e85..b4381f255a5c 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -77,6 +77,27 @@
 /* preempt_count() and related functions, depends on PREEMPT_NEED_RESCHED */
 #include <asm/preempt.h>
 
+/**
+ * interrupt_context_level - return interrupt context level
+ *
+ * Returns the current interrupt context level.
+ *  0 - normal context
+ *  1 - softirq context
+ *  2 - hardirq context
+ *  3 - NMI context
+ */
+static __always_inline unsigned char interrupt_context_level(void)
+{
+	unsigned long pc = preempt_count();
+	unsigned char level = 0;
+
+	level += !!(pc & (NMI_MASK));
+	level += !!(pc & (NMI_MASK | HARDIRQ_MASK));
+	level += !!(pc & (NMI_MASK | HARDIRQ_MASK | SOFTIRQ_OFFSET));
+
+	return level;
+}
+
 #define nmi_count()	(preempt_count() & NMI_MASK)
 #define hardirq_count()	(preempt_count() & HARDIRQ_MASK)
 #ifdef CONFIG_PREEMPT_RT
@@ -122,9 +143,10 @@
  * The preempt_count offset after spin_lock()
  */
 #if !defined(CONFIG_PREEMPT_RT)
-#define PREEMPT_LOCK_OFFSET	PREEMPT_DISABLE_OFFSET
+#define PREEMPT_LOCK_OFFSET		PREEMPT_DISABLE_OFFSET
 #else
-#define PREEMPT_LOCK_OFFSET	0
+/* Locks on RT do not disable preemption */
+#define PREEMPT_LOCK_OFFSET		0
 #endif
 
 /*
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 85b656f82d75..1522df223c0f 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -183,10 +183,6 @@ extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
 extern int printk_delay_msec;
 extern int dmesg_restrict;
 
-extern int
-devkmsg_sysctl_set_loglvl(struct ctl_table *table, int write, void *buf,
-			  size_t *lenp, loff_t *ppos);
-
 extern void wake_up_klogd(void);
 
 char *log_buf_addr_get(void);
@@ -198,6 +194,7 @@ void dump_stack_print_info(const char *log_lvl);
 void show_regs_print_info(const char *log_lvl);
 extern asmlinkage void dump_stack_lvl(const char *log_lvl) __cold;
 extern asmlinkage void dump_stack(void) __cold;
+void printk_trigger_flush(void);
 #else
 static inline __printf(1, 0)
 int vprintk(const char *s, va_list args)
@@ -274,6 +271,9 @@ static inline void dump_stack_lvl(const char *log_lvl)
 static inline void dump_stack(void)
 {
 }
+static inline void printk_trigger_flush(void)
+{
+}
 #endif
 
 #ifdef CONFIG_SMP
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 069c7fd95396..81d6e4ec2294 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -110,7 +110,16 @@ extern struct proc_dir_entry *proc_create_data(const char *, umode_t,
 struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct proc_ops *proc_ops);
 extern void proc_set_size(struct proc_dir_entry *, loff_t);
 extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);
-extern void *PDE_DATA(const struct inode *);
+
+/*
+ * Obtain the private data passed by user through proc_create_data() or
+ * related.
+ */
+static inline void *pde_data(const struct inode *inode)
+{
+	return inode->i_private;
+}
+
 extern void *proc_get_parent_data(const struct inode *);
 extern void proc_remove(struct proc_dir_entry *);
 extern void remove_proc_entry(const char *, struct proc_dir_entry *);
@@ -178,12 +187,20 @@ static inline struct proc_dir_entry *proc_mkdir_mode(const char *name,
 #define proc_create_seq(name, mode, parent, ops) ({NULL;})
 #define proc_create_single(name, mode, parent, show) ({NULL;})
 #define proc_create_single_data(name, mode, parent, show, data) ({NULL;})
-#define proc_create(name, mode, parent, proc_ops) ({NULL;})
-#define proc_create_data(name, mode, parent, proc_ops, data) ({NULL;})
+
+static inline struct proc_dir_entry *
+proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent,
+	    const struct proc_ops *proc_ops)
+{ return NULL; }
+
+static inline struct proc_dir_entry *
+proc_create_data(const char *name, umode_t mode, struct proc_dir_entry *parent,
+		 const struct proc_ops *proc_ops, void *data)
+{ return NULL; }
 
 static inline void proc_set_size(struct proc_dir_entry *de, loff_t size) {}
 static inline void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid) {}
-static inline void *PDE_DATA(const struct inode *inode) {BUG(); return NULL;}
+static inline void *pde_data(const struct inode *inode) {BUG(); return NULL;}
 static inline void *proc_get_parent_data(const struct inode *inode) { BUG(); return NULL; }
 
 static inline void proc_remove(struct proc_dir_entry *de) {}
diff --git a/include/linux/profile.h b/include/linux/profile.h
index fd18ca96f557..11db1ec516e2 100644
--- a/include/linux/profile.h
+++ b/include/linux/profile.h
@@ -31,11 +31,6 @@ static inline int create_proc_profile(void)
 }
 #endif
 
-enum profile_type {
-	PROFILE_TASK_EXIT,
-	PROFILE_MUNMAP
-};
-
 #ifdef CONFIG_PROFILING
 
 extern int prof_on __read_mostly;
@@ -66,23 +61,6 @@ static inline void profile_hit(int type, void *ip)
 struct task_struct;
 struct mm_struct;
 
-/* task is in do_exit() */
-void profile_task_exit(struct task_struct * task);
-
-/* task is dead, free task struct ? Returns 1 if
- * the task was taken, 0 if the task should be freed.
- */
-int profile_handoff_task(struct task_struct * task);
-
-/* sys_munmap */
-void profile_munmap(unsigned long addr);
-
-int task_handoff_register(struct notifier_block * n);
-int task_handoff_unregister(struct notifier_block * n);
-
-int profile_event_register(enum profile_type, struct notifier_block * n);
-int profile_event_unregister(enum profile_type, struct notifier_block * n);
-
 #else
 
 #define prof_on 0
@@ -107,29 +85,6 @@ static inline void profile_hit(int type, void *ip)
 	return;
 }
 
-static inline int task_handoff_register(struct notifier_block * n)
-{
-	return -ENOSYS;
-}
-
-static inline int task_handoff_unregister(struct notifier_block * n)
-{
-	return -ENOSYS;
-}
-
-static inline int profile_event_register(enum profile_type t, struct notifier_block * n)
-{
-	return -ENOSYS;
-}
-
-static inline int profile_event_unregister(enum profile_type t, struct notifier_block * n)
-{
-	return -ENOSYS;
-}
-
-#define profile_task_exit(a) do { } while (0)
-#define profile_handoff_task(a) (0)
-#define profile_munmap(a) do { } while (0)
 
 #endif /* CONFIG_PROFILING */
 
diff --git a/include/linux/property.h b/include/linux/property.h
index 357513a977e5..4cd4b326941f 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -15,6 +15,7 @@
 #include <linux/types.h>
 
 struct device;
+struct net_device;
 
 enum dev_prop_type {
 	DEV_PROP_U8,
@@ -120,6 +121,7 @@ struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
 void fwnode_handle_put(struct fwnode_handle *fwnode);
 
 int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int index);
+int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name);
 
 unsigned int device_get_child_node_count(struct device *dev);
 
@@ -377,10 +379,6 @@ property_entries_dup(const struct property_entry *properties);
 
 void property_entries_free(const struct property_entry *properties);
 
-int device_add_properties(struct device *dev,
-			  const struct property_entry *properties);
-void device_remove_properties(struct device *dev);
-
 bool device_dma_supported(struct device *dev);
 
 enum dev_dma_attr device_get_dma_attr(struct device *dev);
@@ -388,12 +386,10 @@ enum dev_dma_attr device_get_dma_attr(struct device *dev);
 const void *device_get_match_data(struct device *dev);
 
 int device_get_phy_mode(struct device *dev);
+int fwnode_get_phy_mode(struct fwnode_handle *fwnode);
 
-void *device_get_mac_address(struct device *dev, char *addr, int alen);
+void __iomem *fwnode_iomap(struct fwnode_handle *fwnode, int index);
 
-int fwnode_get_phy_mode(struct fwnode_handle *fwnode);
-void *fwnode_get_mac_address(struct fwnode_handle *fwnode,
-			     char *addr, int alen);
 struct fwnode_handle *fwnode_graph_get_next_endpoint(
 	const struct fwnode_handle *fwnode, struct fwnode_handle *prev);
 struct fwnode_handle *
@@ -404,9 +400,6 @@ struct fwnode_handle *fwnode_graph_get_remote_port(
 	const struct fwnode_handle *fwnode);
 struct fwnode_handle *fwnode_graph_get_remote_endpoint(
 	const struct fwnode_handle *fwnode);
-struct fwnode_handle *
-fwnode_graph_get_remote_node(const struct fwnode_handle *fwnode, u32 port,
-			     u32 endpoint);
 
 static inline bool fwnode_graph_is_endpoint(struct fwnode_handle *fwnode)
 {
@@ -421,7 +414,8 @@ static inline bool fwnode_graph_is_endpoint(struct fwnode_handle *fwnode)
  *				one.
  * @FWNODE_GRAPH_DEVICE_DISABLED: That the device to which the remote
  *				  endpoint of the given endpoint belongs to,
- *				  may be disabled.
+ *				  may be disabled, or that the endpoint is not
+ *				  connected.
  */
 #define FWNODE_GRAPH_ENDPOINT_NEXT	BIT(0)
 #define FWNODE_GRAPH_DEVICE_DISABLED	BIT(1)
@@ -429,6 +423,8 @@ static inline bool fwnode_graph_is_endpoint(struct fwnode_handle *fwnode)
 struct fwnode_handle *
 fwnode_graph_get_endpoint_by_id(const struct fwnode_handle *fwnode,
 				u32 port, u32 endpoint, unsigned long flags);
+unsigned int fwnode_graph_get_endpoint_count(struct fwnode_handle *fwnode,
+					     unsigned long flags);
 
 #define fwnode_graph_for_each_endpoint(fwnode, child)			\
 	for (child = NULL;						\
diff --git a/include/linux/psi.h b/include/linux/psi.h
index 65eb1476ac70..89784763d19e 100644
--- a/include/linux/psi.h
+++ b/include/linux/psi.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _LINUX_PSI_H
 #define _LINUX_PSI_H
 
@@ -5,6 +6,7 @@
 #include <linux/psi_types.h>
 #include <linux/sched.h>
 #include <linux/poll.h>
+#include <linux/cgroup-defs.h>
 
 struct seq_file;
 struct css_set;
@@ -24,18 +26,17 @@ void psi_memstall_enter(unsigned long *flags);
 void psi_memstall_leave(unsigned long *flags);
 
 int psi_show(struct seq_file *s, struct psi_group *group, enum psi_res res);
-
-#ifdef CONFIG_CGROUPS
-int psi_cgroup_alloc(struct cgroup *cgrp);
-void psi_cgroup_free(struct cgroup *cgrp);
-void cgroup_move_task(struct task_struct *p, struct css_set *to);
-
 struct psi_trigger *psi_trigger_create(struct psi_group *group,
 			char *buf, size_t nbytes, enum psi_res res);
-void psi_trigger_replace(void **trigger_ptr, struct psi_trigger *t);
+void psi_trigger_destroy(struct psi_trigger *t);
 
 __poll_t psi_trigger_poll(void **trigger_ptr, struct file *file,
 			poll_table *wait);
+
+#ifdef CONFIG_CGROUPS
+int psi_cgroup_alloc(struct cgroup *cgrp);
+void psi_cgroup_free(struct cgroup *cgrp);
+void cgroup_move_task(struct task_struct *p, struct css_set *to);
 #endif
 
 #else /* CONFIG_PSI */
diff --git a/include/linux/psi_types.h b/include/linux/psi_types.h
index 0a23300d49af..c7fe7c089718 100644
--- a/include/linux/psi_types.h
+++ b/include/linux/psi_types.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _LINUX_PSI_TYPES_H
 #define _LINUX_PSI_TYPES_H
 
@@ -21,7 +22,17 @@ enum psi_task_count {
 	 * don't have to special case any state tracking for it.
 	 */
 	NR_ONCPU,
-	NR_PSI_TASK_COUNTS = 4,
+	/*
+	 * For IO and CPU stalls the presence of running/oncpu tasks
+	 * in the domain means a partial rather than a full stall.
+	 * For memory it's not so simple because of page reclaimers:
+	 * they are running/oncpu while representing a stall. To tell
+	 * whether a domain has productivity left or not, we need to
+	 * distinguish between regular running (i.e. productive)
+	 * threads and memstall ones.
+	 */
+	NR_MEMSTALL_RUNNING,
+	NR_PSI_TASK_COUNTS = 5,
 };
 
 /* Task state bitmasks */
@@ -29,6 +40,7 @@ enum psi_task_count {
 #define TSK_MEMSTALL	(1 << NR_MEMSTALL)
 #define TSK_RUNNING	(1 << NR_RUNNING)
 #define TSK_ONCPU	(1 << NR_ONCPU)
+#define TSK_MEMSTALL_RUNNING	(1 << NR_MEMSTALL_RUNNING)
 
 /* Resources that workloads could be stalled on */
 enum psi_res {
@@ -130,8 +142,8 @@ struct psi_trigger {
 	 */
 	u64 last_event_time;
 
-	/* Refcounting to prevent premature destruction */
-	struct kref refcount;
+	/* Deferred event(s) from previous ratelimit window */
+	bool pending_event;
 };
 
 struct psi_group {
diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h
index d48a7192e881..1595088c428b 100644
--- a/include/linux/psp-sev.h
+++ b/include/linux/psp-sev.h
@@ -52,6 +52,7 @@ enum sev_cmd {
 	SEV_CMD_DF_FLUSH		= 0x00A,
 	SEV_CMD_DOWNLOAD_FIRMWARE	= 0x00B,
 	SEV_CMD_GET_ID			= 0x00C,
+	SEV_CMD_INIT_EX                 = 0x00D,
 
 	/* Guest commands */
 	SEV_CMD_DECOMMISSION		= 0x020,
@@ -102,6 +103,26 @@ struct sev_data_init {
 	u32 tmr_len;			/* In */
 } __packed;
 
+/**
+ * struct sev_data_init_ex - INIT_EX command parameters
+ *
+ * @length: len of the command buffer read by the PSP
+ * @flags: processing flags
+ * @tmr_address: system physical address used for SEV-ES
+ * @tmr_len: len of tmr_address
+ * @nv_address: system physical address used for PSP NV storage
+ * @nv_len: len of nv_address
+ */
+struct sev_data_init_ex {
+	u32 length;                     /* In */
+	u32 flags;                      /* In */
+	u64 tmr_address;                /* In */
+	u32 tmr_len;                    /* In */
+	u32 reserved;                   /* In */
+	u64 nv_address;                 /* In/Out */
+	u32 nv_len;                     /* In */
+} __packed;
+
 #define SEV_INIT_FLAGS_SEV_ES	0x01
 
 /**
diff --git a/include/linux/pstore.h b/include/linux/pstore.h
index eb93a54cff31..e97a8188f0fd 100644
--- a/include/linux/pstore.h
+++ b/include/linux/pstore.h
@@ -14,7 +14,7 @@
 #include <linux/errno.h>
 #include <linux/kmsg_dump.h>
 #include <linux/mutex.h>
-#include <linux/semaphore.h>
+#include <linux/spinlock.h>
 #include <linux/time.h>
 #include <linux/types.h>
 
@@ -87,7 +87,7 @@ struct pstore_record {
  * @owner:	module which is responsible for this backend driver
  * @name:	name of the backend driver
  *
- * @buf_lock:	semaphore to serialize access to @buf
+ * @buf_lock:	spinlock to serialize access to @buf
  * @buf:	preallocated crash dump buffer
  * @bufsize:	size of @buf available for crash dump bytes (must match
  *		smallest number of bytes available for writing to a
@@ -178,7 +178,7 @@ struct pstore_info {
 	struct module	*owner;
 	const char	*name;
 
-	struct semaphore buf_lock;
+	spinlock_t	buf_lock;
 	char		*buf;
 	size_t		bufsize;
 
diff --git a/include/linux/ptp_classify.h b/include/linux/ptp_classify.h
index ae04968a3a47..fefa7790dc46 100644
--- a/include/linux/ptp_classify.h
+++ b/include/linux/ptp_classify.h
@@ -37,6 +37,7 @@
 #define PTP_MSGTYPE_PDELAY_RESP 0x3
 
 #define PTP_EV_PORT 319
+#define PTP_GEN_PORT 320
 #define PTP_GEN_BIT 0x08 /* indicates general message, if set in message type */
 
 #define OFF_PTP_SOURCE_UUID	22 /* PTPv1 only */
@@ -125,6 +126,17 @@ static inline u8 ptp_get_msgtype(const struct ptp_header *hdr,
 	return msgtype;
 }
 
+/**
+ * ptp_msg_is_sync - Evaluates whether the given skb is a PTP Sync message
+ * @skb: packet buffer
+ * @type: type of the packet (see ptp_classify_raw())
+ *
+ * This function evaluates whether the given skb is a PTP Sync message.
+ *
+ * Return: true if sync message, false otherwise
+ */
+bool ptp_msg_is_sync(struct sk_buff *skb, unsigned int type);
+
 void __init ptp_classifier_init(void);
 #else
 static inline void ptp_classifier_init(void)
@@ -147,5 +159,9 @@ static inline u8 ptp_get_msgtype(const struct ptp_header *hdr,
 	 */
 	return PTP_MSGTYPE_SYNC;
 }
+static inline bool ptp_msg_is_sync(struct sk_buff *skb, unsigned int type)
+{
+	return false;
+}
 #endif
 #endif /* _PTP_CLASSIFY_H_ */
diff --git a/include/linux/ptp_clock_kernel.h b/include/linux/ptp_clock_kernel.h
index 2e5565067355..554454cb8693 100644
--- a/include/linux/ptp_clock_kernel.h
+++ b/include/linux/ptp_clock_kernel.h
@@ -351,15 +351,17 @@ int ptp_get_vclocks_index(int pclock_index, int **vclock_index);
  *
  * @hwtstamps:    skb_shared_hwtstamps structure pointer
  * @vclock_index: phc index of ptp vclock.
+ *
+ * Returns converted timestamp, or 0 on error.
  */
-void ptp_convert_timestamp(struct skb_shared_hwtstamps *hwtstamps,
-			   int vclock_index);
+ktime_t ptp_convert_timestamp(const struct skb_shared_hwtstamps *hwtstamps,
+			      int vclock_index);
 #else
 static inline int ptp_get_vclocks_index(int pclock_index, int **vclock_index)
 { return 0; }
-static inline void ptp_convert_timestamp(struct skb_shared_hwtstamps *hwtstamps,
-					 int vclock_index)
-{ }
+static inline ktime_t ptp_convert_timestamp(const struct skb_shared_hwtstamps *hwtstamps,
+					    int vclock_index)
+{ return 0; }
 
 #endif
 
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index b5ebf6c01292..15b3d176b6b4 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -60,7 +60,7 @@ extern int ptrace_writedata(struct task_struct *tsk, char __user *src, unsigned
 extern void ptrace_disable(struct task_struct *);
 extern int ptrace_request(struct task_struct *child, long request,
 			  unsigned long addr, unsigned long data);
-extern void ptrace_notify(int exit_code);
+extern int ptrace_notify(int exit_code, unsigned long message);
 extern void __ptrace_link(struct task_struct *child,
 			  struct task_struct *new_parent,
 			  const struct cred *ptracer_cred);
@@ -155,8 +155,7 @@ static inline bool ptrace_event_enabled(struct task_struct *task, int event)
 static inline void ptrace_event(int event, unsigned long message)
 {
 	if (unlikely(ptrace_event_enabled(current, event))) {
-		current->ptrace_message = message;
-		ptrace_notify((event << 8) | SIGTRAP);
+		ptrace_notify((event << 8) | SIGTRAP, message);
 	} else if (event == PTRACE_EVENT_EXEC) {
 		/* legacy EXEC report via SIGTRAP */
 		if ((current->ptrace & (PT_PTRACED|PT_SEIZED)) == PT_PTRACED)
@@ -362,29 +361,25 @@ static inline void user_single_step_report(struct pt_regs *regs)
 #ifndef arch_ptrace_stop_needed
 /**
  * arch_ptrace_stop_needed - Decide whether arch_ptrace_stop() should be called
- * @code:	current->exit_code value ptrace will stop with
- * @info:	siginfo_t pointer (or %NULL) for signal ptrace will stop with
  *
  * This is called with the siglock held, to decide whether or not it's
- * necessary to release the siglock and call arch_ptrace_stop() with the
- * same @code and @info arguments.  It can be defined to a constant if
- * arch_ptrace_stop() is never required, or always is.  On machines where
- * this makes sense, it should be defined to a quick test to optimize out
- * calling arch_ptrace_stop() when it would be superfluous.  For example,
- * if the thread has not been back to user mode since the last stop, the
- * thread state might indicate that nothing needs to be done.
+ * necessary to release the siglock and call arch_ptrace_stop().  It can be
+ * defined to a constant if arch_ptrace_stop() is never required, or always
+ * is.  On machines where this makes sense, it should be defined to a quick
+ * test to optimize out calling arch_ptrace_stop() when it would be
+ * superfluous.  For example, if the thread has not been back to user mode
+ * since the last stop, the thread state might indicate that nothing needs
+ * to be done.
  *
  * This is guaranteed to be invoked once before a task stops for ptrace and
  * may include arch-specific operations necessary prior to a ptrace stop.
  */
-#define arch_ptrace_stop_needed(code, info)	(0)
+#define arch_ptrace_stop_needed()	(0)
 #endif
 
 #ifndef arch_ptrace_stop
 /**
  * arch_ptrace_stop - Do machine-specific work before stopping for ptrace
- * @code:	current->exit_code value ptrace will stop with
- * @info:	siginfo_t pointer (or %NULL) for signal ptrace will stop with
  *
  * This is called with no locks held when arch_ptrace_stop_needed() has
  * just returned nonzero.  It is allowed to block, e.g. for user memory
@@ -394,7 +389,7 @@ static inline void user_single_step_report(struct pt_regs *regs)
  * we only do it when the arch requires it for this particular stop, as
  * indicated by arch_ptrace_stop_needed().
  */
-#define arch_ptrace_stop(code, info)		do { } while (0)
+#define arch_ptrace_stop()		do { } while (0)
 #endif
 
 #ifndef current_pt_regs
@@ -417,4 +412,80 @@ static inline void user_single_step_report(struct pt_regs *regs)
 extern int task_current_syscall(struct task_struct *target, struct syscall_info *info);
 
 extern void sigaction_compat_abi(struct k_sigaction *act, struct k_sigaction *oact);
+
+/*
+ * ptrace report for syscall entry and exit looks identical.
+ */
+static inline int ptrace_report_syscall(unsigned long message)
+{
+	int ptrace = current->ptrace;
+	int signr;
+
+	if (!(ptrace & PT_PTRACED))
+		return 0;
+
+	signr = ptrace_notify(SIGTRAP | ((ptrace & PT_TRACESYSGOOD) ? 0x80 : 0),
+			      message);
+
+	/*
+	 * this isn't the same as continuing with a signal, but it will do
+	 * for normal use.  strace only continues with a signal if the
+	 * stopping signal is not SIGTRAP.  -brl
+	 */
+	if (signr)
+		send_sig(signr, current, 1);
+
+	return fatal_signal_pending(current);
+}
+
+/**
+ * ptrace_report_syscall_entry - task is about to attempt a system call
+ * @regs:		user register state of current task
+ *
+ * This will be called if %SYSCALL_WORK_SYSCALL_TRACE or
+ * %SYSCALL_WORK_SYSCALL_EMU have been set, when the current task has just
+ * entered the kernel for a system call.  Full user register state is
+ * available here.  Changing the values in @regs can affect the system
+ * call number and arguments to be tried.  It is safe to block here,
+ * preventing the system call from beginning.
+ *
+ * Returns zero normally, or nonzero if the calling arch code should abort
+ * the system call.  That must prevent normal entry so no system call is
+ * made.  If @task ever returns to user mode after this, its register state
+ * is unspecified, but should be something harmless like an %ENOSYS error
+ * return.  It should preserve enough information so that syscall_rollback()
+ * can work (see asm-generic/syscall.h).
+ *
+ * Called without locks, just after entering kernel mode.
+ */
+static inline __must_check int ptrace_report_syscall_entry(
+	struct pt_regs *regs)
+{
+	return ptrace_report_syscall(PTRACE_EVENTMSG_SYSCALL_ENTRY);
+}
+
+/**
+ * ptrace_report_syscall_exit - task has just finished a system call
+ * @regs:		user register state of current task
+ * @step:		nonzero if simulating single-step or block-step
+ *
+ * This will be called if %SYSCALL_WORK_SYSCALL_TRACE has been set, when
+ * the current task has just finished an attempted system call.  Full
+ * user register state is available here.  It is safe to block here,
+ * preventing signals from being processed.
+ *
+ * If @step is nonzero, this report is also in lieu of the normal
+ * trap that would follow the system call instruction because
+ * user_enable_block_step() or user_enable_single_step() was used.
+ * In this case, %SYSCALL_WORK_SYSCALL_TRACE might not be set.
+ *
+ * Called without locks, just before checking for pending signals.
+ */
+static inline void ptrace_report_syscall_exit(struct pt_regs *regs, int step)
+{
+	if (step)
+		user_single_step_report(regs);
+	else
+		ptrace_report_syscall(PTRACE_EVENTMSG_SYSCALL_EXIT);
+}
 #endif
diff --git a/include/linux/ptrace_api.h b/include/linux/ptrace_api.h
new file mode 100644
index 000000000000..26e7d275ad8d
--- /dev/null
+++ b/include/linux/ptrace_api.h
@@ -0,0 +1 @@
+#include <linux/ptrace.h>
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 725c9b784e60..9771a0761a40 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -414,6 +414,8 @@ struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip,
 
 struct pwm_device *of_pwm_xlate_with_flags(struct pwm_chip *pc,
 		const struct of_phandle_args *args);
+struct pwm_device *of_pwm_single_xlate(struct pwm_chip *pc,
+				       const struct of_phandle_args *args);
 
 struct pwm_device *pwm_get(struct device *dev, const char *con_id);
 struct pwm_device *of_pwm_get(struct device *dev, struct device_node *np,
@@ -429,16 +431,19 @@ struct pwm_device *devm_fwnode_pwm_get(struct device *dev,
 #else
 static inline struct pwm_device *pwm_request(int pwm_id, const char *label)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
 static inline void pwm_free(struct pwm_device *pwm)
 {
+	might_sleep();
 }
 
 static inline int pwm_apply_state(struct pwm_device *pwm,
 				  const struct pwm_state *state)
 {
+	might_sleep();
 	return -ENOTSUPP;
 }
 
@@ -450,6 +455,7 @@ static inline int pwm_adjust_config(struct pwm_device *pwm)
 static inline int pwm_config(struct pwm_device *pwm, int duty_ns,
 			     int period_ns)
 {
+	might_sleep();
 	return -EINVAL;
 }
 
@@ -462,11 +468,13 @@ static inline int pwm_capture(struct pwm_device *pwm,
 
 static inline int pwm_enable(struct pwm_device *pwm)
 {
+	might_sleep();
 	return -EINVAL;
 }
 
 static inline void pwm_disable(struct pwm_device *pwm)
 {
+	might_sleep();
 }
 
 static inline int pwm_set_chip_data(struct pwm_device *pwm, void *data)
@@ -493,12 +501,14 @@ static inline struct pwm_device *pwm_request_from_chip(struct pwm_chip *chip,
 						       unsigned int index,
 						       const char *label)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
 static inline struct pwm_device *pwm_get(struct device *dev,
 					 const char *consumer)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
@@ -506,16 +516,19 @@ static inline struct pwm_device *of_pwm_get(struct device *dev,
 					    struct device_node *np,
 					    const char *con_id)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
 static inline void pwm_put(struct pwm_device *pwm)
 {
+	might_sleep();
 }
 
 static inline struct pwm_device *devm_pwm_get(struct device *dev,
 					      const char *consumer)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
@@ -523,6 +536,7 @@ static inline struct pwm_device *devm_of_pwm_get(struct device *dev,
 						 struct device_node *np,
 						 const char *con_id)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 
@@ -530,6 +544,7 @@ static inline struct pwm_device *
 devm_fwnode_pwm_get(struct device *dev, struct fwnode_handle *fwnode,
 		    const char *con_id)
 {
+	might_sleep();
 	return ERR_PTR(-ENODEV);
 }
 #endif
diff --git a/include/linux/qcom_scm.h b/include/linux/qcom_scm.h
index 81cad9e1e412..f8335644a01a 100644
--- a/include/linux/qcom_scm.h
+++ b/include/linux/qcom_scm.h
@@ -63,13 +63,21 @@ enum qcom_scm_ice_cipher {
 
 extern bool qcom_scm_is_available(void);
 
-extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
-extern int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus);
+extern int qcom_scm_set_cold_boot_addr(void *entry);
+extern int qcom_scm_set_warm_boot_addr(void *entry);
 extern void qcom_scm_cpu_power_down(u32 flags);
 extern int qcom_scm_set_remote_state(u32 state, u32 id);
 
+struct qcom_scm_pas_metadata {
+	void *ptr;
+	dma_addr_t phys;
+	ssize_t size;
+};
+
 extern int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
-				   size_t size);
+				   size_t size,
+				   struct qcom_scm_pas_metadata *ctx);
+void qcom_scm_pas_metadata_release(struct qcom_scm_pas_metadata *ctx);
 extern int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
 				  phys_addr_t size);
 extern int qcom_scm_pas_auth_and_reset(u32 peripheral);
@@ -83,6 +91,7 @@ extern bool qcom_scm_restore_sec_cfg_available(void);
 extern int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare);
 extern int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size);
 extern int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare);
+extern int qcom_scm_iommu_set_cp_pool_size(u32 spare, u32 size);
 extern int qcom_scm_mem_protect_video_var(u32 cp_start, u32 cp_size,
 					  u32 cp_nonpixel_start,
 					  u32 cp_nonpixel_size);
@@ -107,6 +116,7 @@ extern bool qcom_scm_hdcp_available(void);
 extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
 			     u32 *resp);
 
+extern int qcom_scm_iommu_set_pt_format(u32 sec_id, u32 ctx_num, u32 pt_fmt);
 extern int qcom_scm_qsmmu500_wait_safe_toggle(bool en);
 
 extern int qcom_scm_lmh_dcvsh(u32 payload_fn, u32 payload_reg, u32 payload_val,
diff --git a/include/linux/qed/common_hsi.h b/include/linux/qed/common_hsi.h
index 0a3807e927c5..827624840ee2 100644
--- a/include/linux/qed/common_hsi.h
+++ b/include/linux/qed/common_hsi.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
 /* QLogic qed NIC Driver
  * Copyright (c) 2015-2016  QLogic Corporation
- * Copyright (c) 2019-2020 Marvell International Ltd.
+ * Copyright (c) 2019-2021 Marvell International Ltd.
  */
 
 #ifndef _COMMON_HSI_H
@@ -47,10 +47,10 @@
 #define ISCSI_CDU_TASK_SEG_TYPE			0
 #define FCOE_CDU_TASK_SEG_TYPE			0
 #define RDMA_CDU_TASK_SEG_TYPE			1
+#define ETH_CDU_TASK_SEG_TYPE			2
 
 #define FW_ASSERT_GENERAL_ATTN_IDX		32
 
-
 /* Queue Zone sizes in bytes */
 #define TSTORM_QZONE_SIZE	8
 #define MSTORM_QZONE_SIZE	16
@@ -60,9 +60,12 @@
 #define PSTORM_QZONE_SIZE	0
 
 #define MSTORM_VF_ZONE_DEFAULT_SIZE_LOG		7
-#define ETH_MAX_NUM_RX_QUEUES_PER_VF_DEFAULT	16
-#define ETH_MAX_NUM_RX_QUEUES_PER_VF_DOUBLE	48
-#define ETH_MAX_NUM_RX_QUEUES_PER_VF_QUAD	112
+#define ETH_MAX_RXQ_VF_DEFAULT 16
+#define ETH_MAX_RXQ_VF_DOUBLE 48
+#define ETH_MAX_RXQ_VF_QUAD 112
+
+#define ETH_RGSRC_CTX_SIZE			6
+#define ETH_TGSRC_CTX_SIZE			6
 
 /********************************/
 /* CORE (LIGHT L2) FW CONSTANTS */
@@ -89,8 +92,8 @@
 #define MAX_NUM_LL2_TX_STATS_COUNTERS  48
 
 #define FW_MAJOR_VERSION	8
-#define FW_MINOR_VERSION	42
-#define FW_REVISION_VERSION	2
+#define FW_MINOR_VERSION	59
+#define FW_REVISION_VERSION	1
 #define FW_ENGINEERING_VERSION	0
 
 /***********************/
@@ -112,6 +115,7 @@
 #define MAX_NUM_VFS	(MAX_NUM_VFS_K2)
 
 #define MAX_NUM_FUNCTIONS_BB	(MAX_NUM_PFS_BB + MAX_NUM_VFS_BB)
+#define MAX_NUM_FUNCTIONS_K2    (MAX_NUM_PFS_K2 + MAX_NUM_VFS_K2)
 
 #define MAX_FUNCTION_NUMBER_BB	(MAX_NUM_PFS + MAX_NUM_VFS_BB)
 #define MAX_FUNCTION_NUMBER_K2  (MAX_NUM_PFS + MAX_NUM_VFS_K2)
@@ -133,7 +137,7 @@
 #define NUM_OF_TCS		(NUM_OF_PHYS_TCS + 1)
 
 /* CIDs */
-#define NUM_OF_CONNECTION_TYPES_E4	(8)
+#define NUM_OF_CONNECTION_TYPES	(8)
 #define NUM_OF_LCIDS			(320)
 #define NUM_OF_LTIDS			(320)
 
@@ -144,7 +148,7 @@
 #define GTT_DWORD_SIZE		BIT(GTT_DWORD_SIZE_BITS)
 
 /* Tools Version */
-#define TOOLS_VERSION	10
+#define TOOLS_VERSION 11
 
 /*****************/
 /* CDU CONSTANTS */
@@ -162,6 +166,7 @@
 #define CDU_CONTEXT_VALIDATION_CFG_USE_REGION			(3)
 #define CDU_CONTEXT_VALIDATION_CFG_USE_CID			(4)
 #define CDU_CONTEXT_VALIDATION_CFG_USE_ACTIVE			(5)
+#define CDU_CONTEXT_VALIDATION_DEFAULT_CFG			(0x3d)
 
 /*****************/
 /* DQ CONSTANTS  */
@@ -302,6 +307,9 @@
 /* PWM address mapping */
 #define DQ_PWM_OFFSET_DPM_BASE		0x0
 #define DQ_PWM_OFFSET_DPM_END		0x27
+#define DQ_PWM_OFFSET_XCM32_24ICID_BASE 0x28
+#define DQ_PWM_OFFSET_UCM32_24ICID_BASE 0x30
+#define DQ_PWM_OFFSET_TCM32_24ICID_BASE 0x38
 #define DQ_PWM_OFFSET_XCM16_BASE	0x40
 #define DQ_PWM_OFFSET_XCM32_BASE	0x44
 #define DQ_PWM_OFFSET_UCM16_BASE	0x48
@@ -325,6 +333,13 @@
 #define DQ_PWM_OFFSET_TCM_LL2_PROD_UPDATE \
 	(DQ_PWM_OFFSET_TCM32_BASE + DQ_TCM_AGG_VAL_SEL_REG9 - 4)
 
+#define DQ_PWM_OFFSET_XCM_RDMA_24B_ICID_SQ_PROD \
+	(DQ_PWM_OFFSET_XCM32_24ICID_BASE + 2)
+#define DQ_PWM_OFFSET_UCM_RDMA_24B_ICID_CQ_CONS_32BIT \
+	(DQ_PWM_OFFSET_UCM32_24ICID_BASE + 4)
+#define DQ_PWM_OFFSET_TCM_ROCE_24B_ICID_RQ_PROD \
+	(DQ_PWM_OFFSET_TCM32_24ICID_BASE + 1)
+
 #define	DQ_REGION_SHIFT			(12)
 
 /* DPM */
@@ -360,6 +375,7 @@
 
 /* Number of global Vport/QCN rate limiters */
 #define MAX_QM_GLOBAL_RLS	256
+#define COMMON_MAX_QM_GLOBAL_RLS MAX_QM_GLOBAL_RLS
 
 /* QM registers data */
 #define QM_LINE_CRD_REG_WIDTH		16
@@ -379,7 +395,7 @@
 #define CAU_FSM_ETH_TX  1
 
 /* Number of Protocol Indices per Status Block */
-#define PIS_PER_SB_E4	12
+#define PIS_PER_SB	12
 #define MAX_PIS_PER_SB	PIS_PER_SB
 
 #define CAU_HC_STOPPED_STATE	3
@@ -700,6 +716,13 @@ enum mf_mode {
 	MAX_MF_MODE
 };
 
+/* Per protocol packet duplication enable bit vector. If set, duplicate
+ * offloaded traffic to LL2 debug queueu.
+ */
+struct offload_pkt_dup_enable {
+	__le16 enable_vector;
+};
+
 /* Per-protocol connection types */
 enum protocol_type {
 	PROTOCOLID_TCP_ULP,
@@ -717,6 +740,12 @@ enum protocol_type {
 	MAX_PROTOCOL_TYPE
 };
 
+/* Pstorm packet duplication config */
+struct pstorm_pkt_dup_cfg {
+	struct offload_pkt_dup_enable enable;
+	__le16 reserved[3];
+};
+
 struct regpair {
 	__le32 lo;
 	__le32 hi;
@@ -728,10 +757,24 @@ struct rdma_eqe_destroy_qp {
 	u8 reserved[4];
 };
 
+/* RoCE Suspend Event Data */
+struct rdma_eqe_suspend_qp {
+	__le32 cid;
+	u8 reserved[4];
+};
+
 /* RDMA Event Data Union */
 union rdma_eqe_data {
 	struct regpair async_handle;
 	struct rdma_eqe_destroy_qp rdma_destroy_qp_data;
+	struct rdma_eqe_suspend_qp rdma_suspend_qp_data;
+};
+
+/* Tstorm packet duplication config */
+struct tstorm_pkt_dup_cfg {
+	struct offload_pkt_dup_enable enable;
+	__le16 reserved;
+	__le32 cid;
 };
 
 struct tstorm_queue_zone {
@@ -891,6 +934,15 @@ struct db_legacy_addr {
 #define DB_LEGACY_ADDR_ICID_SHIFT	5
 };
 
+/* Structure for doorbell address, in legacy mode, without DEMS */
+struct db_legacy_wo_dems_addr {
+	__le32 addr;
+#define DB_LEGACY_WO_DEMS_ADDR_RESERVED0_MASK   0x3
+#define DB_LEGACY_WO_DEMS_ADDR_RESERVED0_SHIFT  0
+#define DB_LEGACY_WO_DEMS_ADDR_ICID_MASK        0x3FFFFFFF
+#define DB_LEGACY_WO_DEMS_ADDR_ICID_SHIFT       2
+};
+
 /* Structure for doorbell address, in PWM mode */
 struct db_pwm_addr {
 	__le32 addr;
@@ -907,6 +959,31 @@ struct db_pwm_addr {
 };
 
 /* Parameters to RDMA firmware, passed in EDPM doorbell */
+struct db_rdma_24b_icid_dpm_params {
+	__le32 params;
+#define DB_RDMA_24B_ICID_DPM_PARAMS_SIZE_MASK   0x3F
+#define DB_RDMA_24B_ICID_DPM_PARAMS_SIZE_SHIFT  0
+#define DB_RDMA_24B_ICID_DPM_PARAMS_DPM_TYPE_MASK       0x3
+#define DB_RDMA_24B_ICID_DPM_PARAMS_DPM_TYPE_SHIFT      6
+#define DB_RDMA_24B_ICID_DPM_PARAMS_OPCODE_MASK 0xFF
+#define DB_RDMA_24B_ICID_DPM_PARAMS_OPCODE_SHIFT        8
+#define DB_RDMA_24B_ICID_DPM_PARAMS_ICID_EXT_MASK       0xFF
+#define DB_RDMA_24B_ICID_DPM_PARAMS_ICID_EXT_SHIFT      16
+#define DB_RDMA_24B_ICID_DPM_PARAMS_INV_BYTE_CNT_MASK   0x7
+#define DB_RDMA_24B_ICID_DPM_PARAMS_INV_BYTE_CNT_SHIFT  24
+#define DB_RDMA_24B_ICID_DPM_PARAMS_EXT_ICID_MODE_EN_MASK       0x1
+#define DB_RDMA_24B_ICID_DPM_PARAMS_EXT_ICID_MODE_EN_SHIFT      27
+#define DB_RDMA_24B_ICID_DPM_PARAMS_COMPLETION_FLG_MASK 0x1
+#define DB_RDMA_24B_ICID_DPM_PARAMS_COMPLETION_FLG_SHIFT        28
+#define DB_RDMA_24B_ICID_DPM_PARAMS_S_FLG_MASK  0x1
+#define DB_RDMA_24B_ICID_DPM_PARAMS_S_FLG_SHIFT 29
+#define DB_RDMA_24B_ICID_DPM_PARAMS_RESERVED1_MASK      0x1
+#define DB_RDMA_24B_ICID_DPM_PARAMS_RESERVED1_SHIFT     30
+#define DB_RDMA_24B_ICID_DPM_PARAMS_CONN_TYPE_IS_IWARP_MASK     0x1
+#define DB_RDMA_24B_ICID_DPM_PARAMS_CONN_TYPE_IS_IWARP_SHIFT    31
+};
+
+/* Parameters to RDMA firmware, passed in EDPM doorbell */
 struct db_rdma_dpm_params {
 	__le32 params;
 #define DB_RDMA_DPM_PARAMS_SIZE_MASK			0x3F
@@ -1220,21 +1297,41 @@ struct rdif_task_context {
 	__le32 reserved2;
 };
 
+/* Searcher Table struct */
+struct src_entry_header {
+	__le32 flags;
+#define SRC_ENTRY_HEADER_NEXT_PTR_TYPE_MASK     0x1
+#define SRC_ENTRY_HEADER_NEXT_PTR_TYPE_SHIFT    0
+#define SRC_ENTRY_HEADER_EMPTY_MASK     0x1
+#define SRC_ENTRY_HEADER_EMPTY_SHIFT    1
+#define SRC_ENTRY_HEADER_RESERVED_MASK  0x3FFFFFFF
+#define SRC_ENTRY_HEADER_RESERVED_SHIFT 2
+	__le32 magic_number;
+	struct regpair next_ptr;
+};
+
+/* Enumeration for address type */
+enum src_header_next_ptr_type_enum {
+	e_physical_addr,
+	e_logical_addr,
+	MAX_SRC_HEADER_NEXT_PTR_TYPE_ENUM
+};
+
 /* Status block structure */
-struct status_block_e4 {
-	__le16	pi_array[PIS_PER_SB_E4];
+struct status_block {
+	__le16	pi_array[PIS_PER_SB];
 	__le32	sb_num;
-#define STATUS_BLOCK_E4_SB_NUM_MASK	0x1FF
-#define STATUS_BLOCK_E4_SB_NUM_SHIFT	0
-#define STATUS_BLOCK_E4_ZERO_PAD_MASK	0x7F
-#define STATUS_BLOCK_E4_ZERO_PAD_SHIFT	9
-#define STATUS_BLOCK_E4_ZERO_PAD2_MASK	0xFFFF
-#define STATUS_BLOCK_E4_ZERO_PAD2_SHIFT	16
+#define STATUS_BLOCK_SB_NUM_MASK	0x1FF
+#define STATUS_BLOCK_SB_NUM_SHIFT	0
+#define STATUS_BLOCK_ZERO_PAD_MASK	0x7F
+#define STATUS_BLOCK_ZERO_PAD_SHIFT	9
+#define STATUS_BLOCK_ZERO_PAD2_MASK	0xFFFF
+#define STATUS_BLOCK_ZERO_PAD2_SHIFT	16
 	__le32 prod_index;
-#define STATUS_BLOCK_E4_PROD_INDEX_MASK		0xFFFFFF
-#define STATUS_BLOCK_E4_PROD_INDEX_SHIFT	0
-#define STATUS_BLOCK_E4_ZERO_PAD3_MASK		0xFF
-#define STATUS_BLOCK_E4_ZERO_PAD3_SHIFT		24
+#define STATUS_BLOCK_PROD_INDEX_MASK		0xFFFFFF
+#define STATUS_BLOCK_PROD_INDEX_SHIFT	0
+#define STATUS_BLOCK_ZERO_PAD3_MASK		0xFF
+#define STATUS_BLOCK_ZERO_PAD3_SHIFT		24
 };
 
 /* Tdif context */
diff --git a/include/linux/qed/eth_common.h b/include/linux/qed/eth_common.h
index cd1207ad4ada..c84e08bc6802 100644
--- a/include/linux/qed/eth_common.h
+++ b/include/linux/qed/eth_common.h
@@ -67,6 +67,7 @@
 /* Ethernet vport update constants */
 #define ETH_FILTER_RULES_COUNT		10
 #define ETH_RSS_IND_TABLE_ENTRIES_NUM	128
+#define ETH_RSS_IND_TABLE_MASK_SIZE_REGS    (ETH_RSS_IND_TABLE_ENTRIES_NUM / 32)
 #define ETH_RSS_KEY_SIZE_REGS		10
 #define ETH_RSS_ENGINE_NUM_K2		207
 #define ETH_RSS_ENGINE_NUM_BB		127
diff --git a/include/linux/qed/fcoe_common.h b/include/linux/qed/fcoe_common.h
index 68eda1c21cde..7ba0abc867f1 100644
--- a/include/linux/qed/fcoe_common.h
+++ b/include/linux/qed/fcoe_common.h
@@ -150,49 +150,49 @@ struct ystorm_fcoe_task_st_ctx {
 	u8 reserved2[8];
 };
 
-struct e4_ystorm_fcoe_task_ag_ctx {
+struct ystorm_fcoe_task_ag_ctx {
 	u8 byte0;
 	u8 byte1;
 	__le16 word0;
 	u8 flags0;
-#define E4_YSTORM_FCOE_TASK_AG_CTX_NIBBLE0_MASK		0xF
-#define E4_YSTORM_FCOE_TASK_AG_CTX_NIBBLE0_SHIFT	0
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT0_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT0_SHIFT		4
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT1_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT1_SHIFT		5
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT2_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT2_SHIFT		6
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT3_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT3_SHIFT		7
+#define YSTORM_FCOE_TASK_AG_CTX_NIBBLE0_MASK		0xF
+#define YSTORM_FCOE_TASK_AG_CTX_NIBBLE0_SHIFT	0
+#define YSTORM_FCOE_TASK_AG_CTX_BIT0_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_BIT0_SHIFT		4
+#define YSTORM_FCOE_TASK_AG_CTX_BIT1_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_BIT1_SHIFT		5
+#define YSTORM_FCOE_TASK_AG_CTX_BIT2_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_BIT2_SHIFT		6
+#define YSTORM_FCOE_TASK_AG_CTX_BIT3_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_BIT3_SHIFT		7
 	u8 flags1;
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF0_MASK		0x3
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF0_SHIFT		0
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF1_MASK		0x3
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF1_SHIFT		2
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF2SPECIAL_MASK	0x3
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF2SPECIAL_SHIFT	4
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF0EN_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF0EN_SHIFT		6
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF1EN_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_CF1EN_SHIFT		7
+#define YSTORM_FCOE_TASK_AG_CTX_CF0_MASK		0x3
+#define YSTORM_FCOE_TASK_AG_CTX_CF0_SHIFT		0
+#define YSTORM_FCOE_TASK_AG_CTX_CF1_MASK		0x3
+#define YSTORM_FCOE_TASK_AG_CTX_CF1_SHIFT		2
+#define YSTORM_FCOE_TASK_AG_CTX_CF2SPECIAL_MASK	0x3
+#define YSTORM_FCOE_TASK_AG_CTX_CF2SPECIAL_SHIFT	4
+#define YSTORM_FCOE_TASK_AG_CTX_CF0EN_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_CF0EN_SHIFT		6
+#define YSTORM_FCOE_TASK_AG_CTX_CF1EN_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_CF1EN_SHIFT		7
 	u8 flags2;
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT4_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_BIT4_SHIFT		0
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE0EN_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE0EN_SHIFT	1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE1EN_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE1EN_SHIFT	2
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE2EN_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE2EN_SHIFT	3
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE3EN_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE3EN_SHIFT	4
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE4EN_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE4EN_SHIFT	5
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE5EN_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE5EN_SHIFT	6
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE6EN_MASK		0x1
-#define E4_YSTORM_FCOE_TASK_AG_CTX_RULE6EN_SHIFT	7
+#define YSTORM_FCOE_TASK_AG_CTX_BIT4_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_BIT4_SHIFT		0
+#define YSTORM_FCOE_TASK_AG_CTX_RULE0EN_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_RULE0EN_SHIFT	1
+#define YSTORM_FCOE_TASK_AG_CTX_RULE1EN_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_RULE1EN_SHIFT	2
+#define YSTORM_FCOE_TASK_AG_CTX_RULE2EN_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_RULE2EN_SHIFT	3
+#define YSTORM_FCOE_TASK_AG_CTX_RULE3EN_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_RULE3EN_SHIFT	4
+#define YSTORM_FCOE_TASK_AG_CTX_RULE4EN_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_RULE4EN_SHIFT	5
+#define YSTORM_FCOE_TASK_AG_CTX_RULE5EN_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_RULE5EN_SHIFT	6
+#define YSTORM_FCOE_TASK_AG_CTX_RULE6EN_MASK		0x1
+#define YSTORM_FCOE_TASK_AG_CTX_RULE6EN_SHIFT	7
 	u8 byte2;
 	__le32 reg0;
 	u8 byte3;
@@ -206,73 +206,73 @@ struct e4_ystorm_fcoe_task_ag_ctx {
 	__le32 reg2;
 };
 
-struct e4_tstorm_fcoe_task_ag_ctx {
+struct tstorm_fcoe_task_ag_ctx {
 	u8 reserved;
 	u8 byte1;
 	__le16 icid;
 	u8 flags0;
-#define E4_TSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_MASK		0xF
-#define E4_TSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
-#define E4_TSTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
-#define E4_TSTORM_FCOE_TASK_AG_CTX_BIT1_MASK			0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_BIT1_SHIFT			5
-#define E4_TSTORM_FCOE_TASK_AG_CTX_WAIT_ABTS_RSP_F_MASK		0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_WAIT_ABTS_RSP_F_SHIFT	6
-#define E4_TSTORM_FCOE_TASK_AG_CTX_VALID_MASK			0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_VALID_SHIFT			7
+#define TSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_MASK		0xF
+#define TSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
+#define TSTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
+#define TSTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
+#define TSTORM_FCOE_TASK_AG_CTX_BIT1_MASK			0x1
+#define TSTORM_FCOE_TASK_AG_CTX_BIT1_SHIFT			5
+#define TSTORM_FCOE_TASK_AG_CTX_WAIT_ABTS_RSP_F_MASK		0x1
+#define TSTORM_FCOE_TASK_AG_CTX_WAIT_ABTS_RSP_F_SHIFT	6
+#define TSTORM_FCOE_TASK_AG_CTX_VALID_MASK			0x1
+#define TSTORM_FCOE_TASK_AG_CTX_VALID_SHIFT			7
 	u8 flags1;
-#define E4_TSTORM_FCOE_TASK_AG_CTX_FALSE_RR_TOV_MASK	0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_FALSE_RR_TOV_SHIFT	0
-#define E4_TSTORM_FCOE_TASK_AG_CTX_BIT5_MASK		0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_BIT5_SHIFT		1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_REC_RR_TOV_CF_MASK	0x3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_REC_RR_TOV_CF_SHIFT	2
-#define E4_TSTORM_FCOE_TASK_AG_CTX_ED_TOV_CF_MASK	0x3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_ED_TOV_CF_SHIFT	4
-#define E4_TSTORM_FCOE_TASK_AG_CTX_CF2_MASK		0x3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_CF2_SHIFT		6
+#define TSTORM_FCOE_TASK_AG_CTX_FALSE_RR_TOV_MASK	0x1
+#define TSTORM_FCOE_TASK_AG_CTX_FALSE_RR_TOV_SHIFT	0
+#define TSTORM_FCOE_TASK_AG_CTX_BIT5_MASK		0x1
+#define TSTORM_FCOE_TASK_AG_CTX_BIT5_SHIFT		1
+#define TSTORM_FCOE_TASK_AG_CTX_REC_RR_TOV_CF_MASK	0x3
+#define TSTORM_FCOE_TASK_AG_CTX_REC_RR_TOV_CF_SHIFT	2
+#define TSTORM_FCOE_TASK_AG_CTX_ED_TOV_CF_MASK	0x3
+#define TSTORM_FCOE_TASK_AG_CTX_ED_TOV_CF_SHIFT	4
+#define TSTORM_FCOE_TASK_AG_CTX_CF2_MASK		0x3
+#define TSTORM_FCOE_TASK_AG_CTX_CF2_SHIFT		6
 	u8 flags2;
-#define E4_TSTORM_FCOE_TASK_AG_CTX_TIMER_STOP_ALL_MASK		0x3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_TIMER_STOP_ALL_SHIFT		0
-#define E4_TSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_MASK		0x3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_SHIFT		2
-#define E4_TSTORM_FCOE_TASK_AG_CTX_SEQ_INIT_CF_MASK		0x3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_SEQ_INIT_CF_SHIFT		4
-#define E4_TSTORM_FCOE_TASK_AG_CTX_SEQ_RECOVERY_CF_MASK		0x3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_SEQ_RECOVERY_CF_SHIFT	6
+#define TSTORM_FCOE_TASK_AG_CTX_TIMER_STOP_ALL_MASK		0x3
+#define TSTORM_FCOE_TASK_AG_CTX_TIMER_STOP_ALL_SHIFT		0
+#define TSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_MASK		0x3
+#define TSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_SHIFT		2
+#define TSTORM_FCOE_TASK_AG_CTX_SEQ_INIT_CF_MASK		0x3
+#define TSTORM_FCOE_TASK_AG_CTX_SEQ_INIT_CF_SHIFT		4
+#define TSTORM_FCOE_TASK_AG_CTX_SEQ_RECOVERY_CF_MASK		0x3
+#define TSTORM_FCOE_TASK_AG_CTX_SEQ_RECOVERY_CF_SHIFT	6
 	u8 flags3;
-#define E4_TSTORM_FCOE_TASK_AG_CTX_UNSOL_COMP_CF_MASK		0x3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_UNSOL_COMP_CF_SHIFT		0
-#define E4_TSTORM_FCOE_TASK_AG_CTX_REC_RR_TOV_CF_EN_MASK	0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_REC_RR_TOV_CF_EN_SHIFT	2
-#define E4_TSTORM_FCOE_TASK_AG_CTX_ED_TOV_CF_EN_MASK		0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_ED_TOV_CF_EN_SHIFT		3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_CF2EN_MASK			0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_CF2EN_SHIFT			4
-#define E4_TSTORM_FCOE_TASK_AG_CTX_TIMER_STOP_ALL_EN_MASK	0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_TIMER_STOP_ALL_EN_SHIFT	5
-#define E4_TSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_EN_MASK	0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_EN_SHIFT	6
-#define E4_TSTORM_FCOE_TASK_AG_CTX_SEQ_INIT_CF_EN_MASK		0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_SEQ_INIT_CF_EN_SHIFT		7
+#define TSTORM_FCOE_TASK_AG_CTX_UNSOL_COMP_CF_MASK		0x3
+#define TSTORM_FCOE_TASK_AG_CTX_UNSOL_COMP_CF_SHIFT		0
+#define TSTORM_FCOE_TASK_AG_CTX_REC_RR_TOV_CF_EN_MASK	0x1
+#define TSTORM_FCOE_TASK_AG_CTX_REC_RR_TOV_CF_EN_SHIFT	2
+#define TSTORM_FCOE_TASK_AG_CTX_ED_TOV_CF_EN_MASK		0x1
+#define TSTORM_FCOE_TASK_AG_CTX_ED_TOV_CF_EN_SHIFT		3
+#define TSTORM_FCOE_TASK_AG_CTX_CF2EN_MASK			0x1
+#define TSTORM_FCOE_TASK_AG_CTX_CF2EN_SHIFT			4
+#define TSTORM_FCOE_TASK_AG_CTX_TIMER_STOP_ALL_EN_MASK	0x1
+#define TSTORM_FCOE_TASK_AG_CTX_TIMER_STOP_ALL_EN_SHIFT	5
+#define TSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_EN_MASK	0x1
+#define TSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_EN_SHIFT	6
+#define TSTORM_FCOE_TASK_AG_CTX_SEQ_INIT_CF_EN_MASK		0x1
+#define TSTORM_FCOE_TASK_AG_CTX_SEQ_INIT_CF_EN_SHIFT		7
 	u8 flags4;
-#define E4_TSTORM_FCOE_TASK_AG_CTX_SEQ_RECOVERY_CF_EN_MASK	0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_SEQ_RECOVERY_CF_EN_SHIFT	0
-#define E4_TSTORM_FCOE_TASK_AG_CTX_UNSOL_COMP_CF_EN_MASK	0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_UNSOL_COMP_CF_EN_SHIFT	1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE0EN_MASK			0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE0EN_SHIFT		2
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE1EN_MASK			0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE1EN_SHIFT		3
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE2EN_MASK			0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE2EN_SHIFT		4
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE3EN_MASK			0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE3EN_SHIFT		5
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE4EN_MASK			0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE4EN_SHIFT		6
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE5EN_MASK			0x1
-#define E4_TSTORM_FCOE_TASK_AG_CTX_RULE5EN_SHIFT		7
+#define TSTORM_FCOE_TASK_AG_CTX_SEQ_RECOVERY_CF_EN_MASK	0x1
+#define TSTORM_FCOE_TASK_AG_CTX_SEQ_RECOVERY_CF_EN_SHIFT	0
+#define TSTORM_FCOE_TASK_AG_CTX_UNSOL_COMP_CF_EN_MASK	0x1
+#define TSTORM_FCOE_TASK_AG_CTX_UNSOL_COMP_CF_EN_SHIFT	1
+#define TSTORM_FCOE_TASK_AG_CTX_RULE0EN_MASK			0x1
+#define TSTORM_FCOE_TASK_AG_CTX_RULE0EN_SHIFT		2
+#define TSTORM_FCOE_TASK_AG_CTX_RULE1EN_MASK			0x1
+#define TSTORM_FCOE_TASK_AG_CTX_RULE1EN_SHIFT		3
+#define TSTORM_FCOE_TASK_AG_CTX_RULE2EN_MASK			0x1
+#define TSTORM_FCOE_TASK_AG_CTX_RULE2EN_SHIFT		4
+#define TSTORM_FCOE_TASK_AG_CTX_RULE3EN_MASK			0x1
+#define TSTORM_FCOE_TASK_AG_CTX_RULE3EN_SHIFT		5
+#define TSTORM_FCOE_TASK_AG_CTX_RULE4EN_MASK			0x1
+#define TSTORM_FCOE_TASK_AG_CTX_RULE4EN_SHIFT		6
+#define TSTORM_FCOE_TASK_AG_CTX_RULE5EN_MASK			0x1
+#define TSTORM_FCOE_TASK_AG_CTX_RULE5EN_SHIFT		7
 	u8 cleanup_state;
 	__le16 last_sent_tid;
 	__le32 rec_rr_tov_exp_timeout;
@@ -352,49 +352,49 @@ struct tstorm_fcoe_task_st_ctx {
 	struct fcoe_tstorm_fcoe_task_st_ctx_read_only read_only;
 };
 
-struct e4_mstorm_fcoe_task_ag_ctx {
+struct mstorm_fcoe_task_ag_ctx {
 	u8 byte0;
 	u8 byte1;
 	__le16 icid;
 	u8 flags0;
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_MASK		0xF
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
-#define E4_MSTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CQE_PLACED_MASK		0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CQE_PLACED_SHIFT		5
-#define E4_MSTORM_FCOE_TASK_AG_CTX_BIT2_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_BIT2_SHIFT			6
-#define E4_MSTORM_FCOE_TASK_AG_CTX_BIT3_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_BIT3_SHIFT			7
+#define MSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_MASK		0xF
+#define MSTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
+#define MSTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
+#define MSTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
+#define MSTORM_FCOE_TASK_AG_CTX_CQE_PLACED_MASK		0x1
+#define MSTORM_FCOE_TASK_AG_CTX_CQE_PLACED_SHIFT		5
+#define MSTORM_FCOE_TASK_AG_CTX_BIT2_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_BIT2_SHIFT			6
+#define MSTORM_FCOE_TASK_AG_CTX_BIT3_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_BIT3_SHIFT			7
 	u8 flags1;
-#define E4_MSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_MASK		0x3
-#define E4_MSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_SHIFT		0
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CF1_MASK			0x3
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CF1_SHIFT			2
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CF2_MASK			0x3
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CF2_SHIFT			4
-#define E4_MSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_EN_MASK	0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_EN_SHIFT	6
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CF1EN_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CF1EN_SHIFT			7
+#define MSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_MASK		0x3
+#define MSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_SHIFT		0
+#define MSTORM_FCOE_TASK_AG_CTX_CF1_MASK			0x3
+#define MSTORM_FCOE_TASK_AG_CTX_CF1_SHIFT			2
+#define MSTORM_FCOE_TASK_AG_CTX_CF2_MASK			0x3
+#define MSTORM_FCOE_TASK_AG_CTX_CF2_SHIFT			4
+#define MSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_EN_MASK	0x1
+#define MSTORM_FCOE_TASK_AG_CTX_EX_CLEANUP_CF_EN_SHIFT	6
+#define MSTORM_FCOE_TASK_AG_CTX_CF1EN_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_CF1EN_SHIFT			7
 	u8 flags2;
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CF2EN_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_CF2EN_SHIFT			0
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE0EN_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE0EN_SHIFT		1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE1EN_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE1EN_SHIFT		2
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE2EN_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE2EN_SHIFT		3
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE3EN_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE3EN_SHIFT		4
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE4EN_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE4EN_SHIFT		5
-#define E4_MSTORM_FCOE_TASK_AG_CTX_XFER_PLACEMENT_EN_MASK	0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_XFER_PLACEMENT_EN_SHIFT	6
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE6EN_MASK			0x1
-#define E4_MSTORM_FCOE_TASK_AG_CTX_RULE6EN_SHIFT		7
+#define MSTORM_FCOE_TASK_AG_CTX_CF2EN_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_CF2EN_SHIFT			0
+#define MSTORM_FCOE_TASK_AG_CTX_RULE0EN_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_RULE0EN_SHIFT		1
+#define MSTORM_FCOE_TASK_AG_CTX_RULE1EN_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_RULE1EN_SHIFT		2
+#define MSTORM_FCOE_TASK_AG_CTX_RULE2EN_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_RULE2EN_SHIFT		3
+#define MSTORM_FCOE_TASK_AG_CTX_RULE3EN_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_RULE3EN_SHIFT		4
+#define MSTORM_FCOE_TASK_AG_CTX_RULE4EN_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_RULE4EN_SHIFT		5
+#define MSTORM_FCOE_TASK_AG_CTX_XFER_PLACEMENT_EN_MASK	0x1
+#define MSTORM_FCOE_TASK_AG_CTX_XFER_PLACEMENT_EN_SHIFT	6
+#define MSTORM_FCOE_TASK_AG_CTX_RULE6EN_MASK			0x1
+#define MSTORM_FCOE_TASK_AG_CTX_RULE6EN_SHIFT		7
 	u8 cleanup_state;
 	__le32 received_bytes;
 	u8 byte3;
@@ -440,56 +440,56 @@ struct mstorm_fcoe_task_st_ctx {
 	struct scsi_cached_sges data_desc;
 };
 
-struct e4_ustorm_fcoe_task_ag_ctx {
+struct ustorm_fcoe_task_ag_ctx {
 	u8 reserved;
 	u8 byte1;
 	__le16 icid;
 	u8 flags0;
-#define E4_USTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_MASK		0xF
-#define E4_USTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
-#define E4_USTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
-#define E4_USTORM_FCOE_TASK_AG_CTX_BIT1_MASK			0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_BIT1_SHIFT			5
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF0_MASK			0x3
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF0_SHIFT			6
+#define USTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_MASK		0xF
+#define USTORM_FCOE_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
+#define USTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
+#define USTORM_FCOE_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
+#define USTORM_FCOE_TASK_AG_CTX_BIT1_MASK			0x1
+#define USTORM_FCOE_TASK_AG_CTX_BIT1_SHIFT			5
+#define USTORM_FCOE_TASK_AG_CTX_CF0_MASK			0x3
+#define USTORM_FCOE_TASK_AG_CTX_CF0_SHIFT			6
 	u8 flags1;
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF1_MASK		0x3
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF1_SHIFT		0
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF2_MASK		0x3
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF2_SHIFT		2
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF3_MASK		0x3
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF3_SHIFT		4
-#define E4_USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_CF_MASK	0x3
-#define E4_USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_CF_SHIFT	6
+#define USTORM_FCOE_TASK_AG_CTX_CF1_MASK		0x3
+#define USTORM_FCOE_TASK_AG_CTX_CF1_SHIFT		0
+#define USTORM_FCOE_TASK_AG_CTX_CF2_MASK		0x3
+#define USTORM_FCOE_TASK_AG_CTX_CF2_SHIFT		2
+#define USTORM_FCOE_TASK_AG_CTX_CF3_MASK		0x3
+#define USTORM_FCOE_TASK_AG_CTX_CF3_SHIFT		4
+#define USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_CF_MASK	0x3
+#define USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_CF_SHIFT	6
 	u8 flags2;
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF0EN_MASK			0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF0EN_SHIFT			0
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF1EN_MASK			0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF1EN_SHIFT			1
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF2EN_MASK			0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF2EN_SHIFT			2
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF3EN_MASK			0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_CF3EN_SHIFT			3
-#define E4_USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_CF_EN_MASK		0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_CF_EN_SHIFT	4
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE0EN_MASK			0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE0EN_SHIFT		5
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE1EN_MASK			0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE1EN_SHIFT		6
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE2EN_MASK			0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE2EN_SHIFT		7
+#define USTORM_FCOE_TASK_AG_CTX_CF0EN_MASK			0x1
+#define USTORM_FCOE_TASK_AG_CTX_CF0EN_SHIFT			0
+#define USTORM_FCOE_TASK_AG_CTX_CF1EN_MASK			0x1
+#define USTORM_FCOE_TASK_AG_CTX_CF1EN_SHIFT			1
+#define USTORM_FCOE_TASK_AG_CTX_CF2EN_MASK			0x1
+#define USTORM_FCOE_TASK_AG_CTX_CF2EN_SHIFT			2
+#define USTORM_FCOE_TASK_AG_CTX_CF3EN_MASK			0x1
+#define USTORM_FCOE_TASK_AG_CTX_CF3EN_SHIFT			3
+#define USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_CF_EN_MASK		0x1
+#define USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_CF_EN_SHIFT	4
+#define USTORM_FCOE_TASK_AG_CTX_RULE0EN_MASK			0x1
+#define USTORM_FCOE_TASK_AG_CTX_RULE0EN_SHIFT		5
+#define USTORM_FCOE_TASK_AG_CTX_RULE1EN_MASK			0x1
+#define USTORM_FCOE_TASK_AG_CTX_RULE1EN_SHIFT		6
+#define USTORM_FCOE_TASK_AG_CTX_RULE2EN_MASK			0x1
+#define USTORM_FCOE_TASK_AG_CTX_RULE2EN_SHIFT		7
 	u8 flags3;
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE3EN_MASK		0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE3EN_SHIFT	0
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE4EN_MASK		0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE4EN_SHIFT	1
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE5EN_MASK		0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE5EN_SHIFT	2
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE6EN_MASK		0x1
-#define E4_USTORM_FCOE_TASK_AG_CTX_RULE6EN_SHIFT	3
-#define E4_USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_TYPE_MASK	0xF
-#define E4_USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_TYPE_SHIFT	4
+#define USTORM_FCOE_TASK_AG_CTX_RULE3EN_MASK		0x1
+#define USTORM_FCOE_TASK_AG_CTX_RULE3EN_SHIFT	0
+#define USTORM_FCOE_TASK_AG_CTX_RULE4EN_MASK		0x1
+#define USTORM_FCOE_TASK_AG_CTX_RULE4EN_SHIFT	1
+#define USTORM_FCOE_TASK_AG_CTX_RULE5EN_MASK		0x1
+#define USTORM_FCOE_TASK_AG_CTX_RULE5EN_SHIFT	2
+#define USTORM_FCOE_TASK_AG_CTX_RULE6EN_MASK		0x1
+#define USTORM_FCOE_TASK_AG_CTX_RULE6EN_SHIFT	3
+#define USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_TYPE_MASK	0xF
+#define USTORM_FCOE_TASK_AG_CTX_DIF_ERROR_TYPE_SHIFT	4
 	__le32 dif_err_intervals;
 	__le32 dif_error_1st_interval;
 	__le32 global_cq_num;
@@ -499,18 +499,18 @@ struct e4_ustorm_fcoe_task_ag_ctx {
 };
 
 /* FCoE task context */
-struct e4_fcoe_task_context {
+struct fcoe_task_context {
 	struct ystorm_fcoe_task_st_ctx ystorm_st_context;
 	struct regpair ystorm_st_padding[2];
 	struct tdif_task_context tdif_context;
-	struct e4_ystorm_fcoe_task_ag_ctx ystorm_ag_context;
-	struct e4_tstorm_fcoe_task_ag_ctx tstorm_ag_context;
+	struct ystorm_fcoe_task_ag_ctx ystorm_ag_context;
+	struct tstorm_fcoe_task_ag_ctx tstorm_ag_context;
 	struct timers_context timer_context;
 	struct tstorm_fcoe_task_st_ctx tstorm_st_context;
 	struct regpair tstorm_st_padding[2];
-	struct e4_mstorm_fcoe_task_ag_ctx mstorm_ag_context;
+	struct mstorm_fcoe_task_ag_ctx mstorm_ag_context;
 	struct mstorm_fcoe_task_st_ctx mstorm_st_context;
-	struct e4_ustorm_fcoe_task_ag_ctx ustorm_ag_context;
+	struct ustorm_fcoe_task_ag_ctx ustorm_ag_context;
 	struct rdif_task_context rdif_context;
 };
 
diff --git a/include/linux/qed/iscsi_common.h b/include/linux/qed/iscsi_common.h
index 157019f716f1..1a60285a01e3 100644
--- a/include/linux/qed/iscsi_common.h
+++ b/include/linux/qed/iscsi_common.h
@@ -714,49 +714,49 @@ struct ystorm_iscsi_task_st_ctx {
 	union iscsi_task_hdr pdu_hdr;
 };
 
-struct e4_ystorm_iscsi_task_ag_ctx {
+struct ystorm_iscsi_task_ag_ctx {
 	u8 reserved;
 	u8 byte1;
 	__le16 word0;
 	u8 flags0;
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK	0xF
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT	0
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK		0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT		4
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK		0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT		5
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_VALID_MASK		0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT		6
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_TTT_VALID_MASK   0x1	/* bit3 */
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_TTT_VALID_SHIFT  7
+#define YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK	0xF
+#define YSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT	0
+#define YSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK		0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT		4
+#define YSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK		0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT		5
+#define YSTORM_ISCSI_TASK_AG_CTX_VALID_MASK		0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT		6
+#define YSTORM_ISCSI_TASK_AG_CTX_TTT_VALID_MASK   0x1	/* bit3 */
+#define YSTORM_ISCSI_TASK_AG_CTX_TTT_VALID_SHIFT  7
 	u8 flags1;
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0_MASK		0x3
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT		0
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1_MASK		0x3
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT		2
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_MASK	0x3
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_SHIFT	4
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK		0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT		6
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK		0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT		7
+#define YSTORM_ISCSI_TASK_AG_CTX_CF0_MASK		0x3
+#define YSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT		0
+#define YSTORM_ISCSI_TASK_AG_CTX_CF1_MASK		0x3
+#define YSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT		2
+#define YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_MASK	0x3
+#define YSTORM_ISCSI_TASK_AG_CTX_CF2SPECIAL_SHIFT	4
+#define YSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK		0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT		6
+#define YSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK		0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT		7
 	u8 flags2;
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK		0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT		0
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK	0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT	1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK	0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT	2
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK	0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT	3
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK	0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT	4
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK	0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT	5
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK	0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT	6
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK	0x1
-#define E4_YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT	7
+#define YSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK		0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT		0
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK	0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT	1
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK	0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT	2
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK	0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT	3
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK	0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT	4
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK	0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT	5
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK	0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT	6
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK	0x1
+#define YSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT	7
 	u8 byte2;
 	__le32 TTT;
 	u8 byte3;
@@ -764,49 +764,49 @@ struct e4_ystorm_iscsi_task_ag_ctx {
 	__le16 word1;
 };
 
-struct e4_mstorm_iscsi_task_ag_ctx {
+struct mstorm_iscsi_task_ag_ctx {
 	u8 cdu_validation;
 	u8 byte1;
 	__le16 task_cid;
 	u8 flags0;
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK	0xF
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_SHIFT	5
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_VALID_MASK			0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT			6
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_SHIFT	7
+#define MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK	0xF
+#define MSTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
+#define MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
+#define MSTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_SHIFT	5
+#define MSTORM_ISCSI_TASK_AG_CTX_VALID_MASK			0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_VALID_SHIFT			6
+#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_FLAG_SHIFT	7
 	u8 flags1;
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_MASK	0x3
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_SHIFT	0
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1_MASK			0x3
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT			2
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2_MASK			0x3
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT			4
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_SHIFT	6
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK			0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT			7
+#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_MASK	0x3
+#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_SHIFT	0
+#define MSTORM_ISCSI_TASK_AG_CTX_CF1_MASK			0x3
+#define MSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT			2
+#define MSTORM_ISCSI_TASK_AG_CTX_CF2_MASK			0x3
+#define MSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT			4
+#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_TASK_CLEANUP_CF_EN_SHIFT	6
+#define MSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK			0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT			7
 	u8 flags2;
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK		0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT		0
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT	1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT	2
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT	3
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT	4
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT	5
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT	6
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK	0x1
-#define E4_MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT	7
+#define MSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK		0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT		0
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT	1
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT	2
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT	3
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT	4
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT	5
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT	6
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK	0x1
+#define MSTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT	7
 	u8 byte2;
 	__le32 reg0;
 	u8 byte3;
@@ -814,56 +814,56 @@ struct e4_mstorm_iscsi_task_ag_ctx {
 	__le16 word1;
 };
 
-struct e4_ustorm_iscsi_task_ag_ctx {
+struct ustorm_iscsi_task_ag_ctx {
 	u8 reserved;
 	u8 state;
 	__le16 icid;
 	u8 flags0;
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK	0xF
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
-#define E4_USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_MASK     0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_SHIFT    5
-#define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_MASK		0x3
-#define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_SHIFT		6
+#define USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_MASK	0xF
+#define USTORM_ISCSI_TASK_AG_CTX_CONNECTION_TYPE_SHIFT	0
+#define USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_MASK		0x1
+#define USTORM_ISCSI_TASK_AG_CTX_EXIST_IN_QM0_SHIFT		4
+#define USTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_MASK     0x1
+#define USTORM_ISCSI_TASK_AG_CTX_CONN_CLEAR_SQ_FLAG_SHIFT    5
+#define USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_MASK		0x3
+#define USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_SHIFT		6
 	u8 flags1;
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RESERVED1_MASK	0x3
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RESERVED1_SHIFT	0
-#define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_MASK	0x3
-#define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_SHIFT	2
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CF3_MASK		0x3
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT		4
-#define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_MASK	0x3
-#define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_SHIFT	6
+#define USTORM_ISCSI_TASK_AG_CTX_RESERVED1_MASK	0x3
+#define USTORM_ISCSI_TASK_AG_CTX_RESERVED1_SHIFT	0
+#define USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_MASK	0x3
+#define USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_SHIFT	2
+#define USTORM_ISCSI_TASK_AG_CTX_CF3_MASK		0x3
+#define USTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT		4
+#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_MASK	0x3
+#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_SHIFT	6
 	u8 flags2;
-#define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_MASK	0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_SHIFT	0
-#define E4_USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_MASK	0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_SHIFT	1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_MASK		0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_SHIFT		2
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK			0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT			3
-#define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_MASK	0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_SHIFT	4
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_MASK	0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_SHIFT	5
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK		0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT		6
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_MASK	0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_SHIFT	7
+#define USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_MASK	0x1
+#define USTORM_ISCSI_TASK_AG_CTX_HQ_SCANNED_CF_EN_SHIFT	0
+#define USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_MASK	0x1
+#define USTORM_ISCSI_TASK_AG_CTX_DISABLE_DATA_ACKED_SHIFT	1
+#define USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_MASK		0x1
+#define USTORM_ISCSI_TASK_AG_CTX_R2T2RECV_EN_SHIFT		2
+#define USTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK			0x1
+#define USTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT			3
+#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_MASK	0x1
+#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN_SHIFT	4
+#define USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_MASK	0x1
+#define USTORM_ISCSI_TASK_AG_CTX_CMP_DATA_TOTAL_EXP_EN_SHIFT	5
+#define USTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK		0x1
+#define USTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT		6
+#define USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_MASK	0x1
+#define USTORM_ISCSI_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_SHIFT	7
 	u8 flags3;
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK		0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT		0
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK		0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT		1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK		0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT		2
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK		0x1
-#define E4_USTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT		3
-#define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_MASK		0xF
-#define E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_SHIFT	4
+#define USTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK		0x1
+#define USTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT		0
+#define USTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK		0x1
+#define USTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT		1
+#define USTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK		0x1
+#define USTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT		2
+#define USTORM_ISCSI_TASK_AG_CTX_RULE6EN_MASK		0x1
+#define USTORM_ISCSI_TASK_AG_CTX_RULE6EN_SHIFT		3
+#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_MASK		0xF
+#define USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_TYPE_SHIFT	4
 	__le32 dif_err_intervals;
 	__le32 dif_error_1st_interval;
 	__le32 rcv_cont_len;
@@ -952,14 +952,14 @@ struct ustorm_iscsi_task_st_ctx {
 };
 
 /* iscsi task context */
-struct e4_iscsi_task_context {
+struct iscsi_task_context {
 	struct ystorm_iscsi_task_st_ctx ystorm_st_context;
-	struct e4_ystorm_iscsi_task_ag_ctx ystorm_ag_context;
+	struct ystorm_iscsi_task_ag_ctx ystorm_ag_context;
 	struct regpair ystorm_ag_padding[2];
 	struct tdif_task_context tdif_context;
-	struct e4_mstorm_iscsi_task_ag_ctx mstorm_ag_context;
+	struct mstorm_iscsi_task_ag_ctx mstorm_ag_context;
 	struct regpair mstorm_ag_padding[2];
-	struct e4_ustorm_iscsi_task_ag_ctx ustorm_ag_context;
+	struct ustorm_iscsi_task_ag_ctx ustorm_ag_context;
 	struct mstorm_iscsi_task_st_ctx mstorm_st_context;
 	struct ustorm_iscsi_task_st_ctx ustorm_st_context;
 	struct rdif_task_context rdif_context;
@@ -1431,73 +1431,73 @@ struct ystorm_iscsi_stats_drv {
 	struct regpair iscsi_tx_tcp_pkt_cnt;
 };
 
-struct e4_tstorm_iscsi_task_ag_ctx {
+struct tstorm_iscsi_task_ag_ctx {
 	u8 byte0;
 	u8 byte1;
 	__le16 word0;
 	u8 flags0;
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK	0xF
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT	0
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK		0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT		4
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK		0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT		5
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT2_MASK		0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT2_SHIFT		6
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT3_MASK		0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT3_SHIFT		7
+#define TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_MASK	0xF
+#define TSTORM_ISCSI_TASK_AG_CTX_NIBBLE0_SHIFT	0
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT0_MASK		0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT0_SHIFT		4
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT1_MASK		0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT1_SHIFT		5
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT2_MASK		0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT2_SHIFT		6
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT3_MASK		0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT3_SHIFT		7
 	u8 flags1;
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT	0
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT5_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_BIT5_SHIFT	1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0_MASK	0x3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT	2
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1_MASK	0x3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT	4
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2_MASK	0x3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT	6
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT4_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT4_SHIFT	0
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT5_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_BIT5_SHIFT	1
+#define TSTORM_ISCSI_TASK_AG_CTX_CF0_MASK	0x3
+#define TSTORM_ISCSI_TASK_AG_CTX_CF0_SHIFT	2
+#define TSTORM_ISCSI_TASK_AG_CTX_CF1_MASK	0x3
+#define TSTORM_ISCSI_TASK_AG_CTX_CF1_SHIFT	4
+#define TSTORM_ISCSI_TASK_AG_CTX_CF2_MASK	0x3
+#define TSTORM_ISCSI_TASK_AG_CTX_CF2_SHIFT	6
 	u8 flags2;
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3_MASK	0x3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT	0
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4_MASK	0x3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4_SHIFT	2
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5_MASK	0x3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5_SHIFT	4
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6_MASK	0x3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6_SHIFT	6
+#define TSTORM_ISCSI_TASK_AG_CTX_CF3_MASK	0x3
+#define TSTORM_ISCSI_TASK_AG_CTX_CF3_SHIFT	0
+#define TSTORM_ISCSI_TASK_AG_CTX_CF4_MASK	0x3
+#define TSTORM_ISCSI_TASK_AG_CTX_CF4_SHIFT	2
+#define TSTORM_ISCSI_TASK_AG_CTX_CF5_MASK	0x3
+#define TSTORM_ISCSI_TASK_AG_CTX_CF5_SHIFT	4
+#define TSTORM_ISCSI_TASK_AG_CTX_CF6_MASK	0x3
+#define TSTORM_ISCSI_TASK_AG_CTX_CF6_SHIFT	6
 	u8 flags3;
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7_MASK	0x3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7_SHIFT	0
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT	2
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT	3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT	4
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT	5
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF4EN_SHIFT	6
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF5EN_SHIFT	7
+#define TSTORM_ISCSI_TASK_AG_CTX_CF7_MASK	0x3
+#define TSTORM_ISCSI_TASK_AG_CTX_CF7_SHIFT	0
+#define TSTORM_ISCSI_TASK_AG_CTX_CF0EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_CF0EN_SHIFT	2
+#define TSTORM_ISCSI_TASK_AG_CTX_CF1EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_CF1EN_SHIFT	3
+#define TSTORM_ISCSI_TASK_AG_CTX_CF2EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_CF2EN_SHIFT	4
+#define TSTORM_ISCSI_TASK_AG_CTX_CF3EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_CF3EN_SHIFT	5
+#define TSTORM_ISCSI_TASK_AG_CTX_CF4EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_CF4EN_SHIFT	6
+#define TSTORM_ISCSI_TASK_AG_CTX_CF5EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_CF5EN_SHIFT	7
 	u8 flags4;
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6EN_MASK		0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF6EN_SHIFT		0
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7EN_MASK		0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_CF7EN_SHIFT		1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT	2
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT	3
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT	4
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT	5
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT	6
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK	0x1
-#define E4_TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT	7
+#define TSTORM_ISCSI_TASK_AG_CTX_CF6EN_MASK		0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_CF6EN_SHIFT		0
+#define TSTORM_ISCSI_TASK_AG_CTX_CF7EN_MASK		0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_CF7EN_SHIFT		1
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE0EN_SHIFT	2
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE1EN_SHIFT	3
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE2EN_SHIFT	4
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE3EN_SHIFT	5
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE4EN_SHIFT	6
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_MASK	0x1
+#define TSTORM_ISCSI_TASK_AG_CTX_RULE5EN_SHIFT	7
 	u8 byte2;
 	__le16 word1;
 	__le32 reg0;
diff --git a/include/linux/qed/nvmetcp_common.h b/include/linux/qed/nvmetcp_common.h
index 5a2ab0606308..cc7c7481a0e0 100644
--- a/include/linux/qed/nvmetcp_common.h
+++ b/include/linux/qed/nvmetcp_common.h
@@ -410,7 +410,7 @@ struct e5_ystorm_nvmetcp_task_ag_ctx {
 	u8 byte2;
 	u8 byte3;
 	u8 byte4;
-	u8 e4_reserved7;
+	u8 reserved7;
 };
 
 struct e5_mstorm_nvmetcp_task_ag_ctx {
@@ -445,7 +445,7 @@ struct e5_mstorm_nvmetcp_task_ag_ctx {
 	u8 byte2;
 	u8 byte3;
 	u8 byte4;
-	u8 e4_reserved7;
+	u8 reserved7;
 };
 
 struct e5_ustorm_nvmetcp_task_ag_ctx {
@@ -489,17 +489,17 @@ struct e5_ustorm_nvmetcp_task_ag_ctx {
 #define E5_USTORM_NVMETCP_TASK_AG_CTX_CMP_CONT_RCV_EXP_EN_SHIFT 7
 	u8 flags3;
 	u8 flags4;
-#define E5_USTORM_NVMETCP_TASK_AG_CTX_E4_RESERVED5_MASK 0x3
-#define E5_USTORM_NVMETCP_TASK_AG_CTX_E4_RESERVED5_SHIFT 0
-#define E5_USTORM_NVMETCP_TASK_AG_CTX_E4_RESERVED6_MASK 0x1
-#define E5_USTORM_NVMETCP_TASK_AG_CTX_E4_RESERVED6_SHIFT 2
-#define E5_USTORM_NVMETCP_TASK_AG_CTX_E4_RESERVED7_MASK 0x1
-#define E5_USTORM_NVMETCP_TASK_AG_CTX_E4_RESERVED7_SHIFT 3
+#define E5_USTORM_NVMETCP_TASK_AG_CTX_RESERVED5_MASK 0x3
+#define E5_USTORM_NVMETCP_TASK_AG_CTX_RESERVED5_SHIFT 0
+#define E5_USTORM_NVMETCP_TASK_AG_CTX_RESERVED6_MASK 0x1
+#define E5_USTORM_NVMETCP_TASK_AG_CTX_RESERVED6_SHIFT 2
+#define E5_USTORM_NVMETCP_TASK_AG_CTX_RESERVED7_MASK 0x1
+#define E5_USTORM_NVMETCP_TASK_AG_CTX_RESERVED7_SHIFT 3
 #define E5_USTORM_NVMETCP_TASK_AG_CTX_DIF_ERROR_TYPE_MASK 0xF
 #define E5_USTORM_NVMETCP_TASK_AG_CTX_DIF_ERROR_TYPE_SHIFT 4
 	u8 byte2;
 	u8 byte3;
-	u8 e4_reserved8;
+	u8 reserved8;
 	__le32 dif_err_intervals;
 	__le32 dif_error_1st_interval;
 	__le32 rcv_cont_len;
diff --git a/include/linux/qed/qed_chain.h b/include/linux/qed/qed_chain.h
index f34dbd0db795..a84063492c71 100644
--- a/include/linux/qed/qed_chain.h
+++ b/include/linux/qed/qed_chain.h
@@ -268,14 +268,15 @@ static inline dma_addr_t qed_chain_get_pbl_phys(const struct qed_chain *chain)
 }
 
 /**
- * @brief qed_chain_advance_page -
+ * qed_chain_advance_page(): Advance the next element across pages for a
+ *                           linked chain.
  *
- * Advance the next element across pages for a linked chain
+ * @p_chain: P_chain.
+ * @p_next_elem: P_next_elem.
+ * @idx_to_inc: Idx_to_inc.
+ * @page_to_inc: page_to_inc.
  *
- * @param p_chain
- * @param p_next_elem
- * @param idx_to_inc
- * @param page_to_inc
+ * Return: Void.
  */
 static inline void
 qed_chain_advance_page(struct qed_chain *p_chain,
@@ -336,12 +337,14 @@ qed_chain_advance_page(struct qed_chain *p_chain,
 	} while (0)
 
 /**
- * @brief qed_chain_return_produced -
+ * qed_chain_return_produced(): A chain in which the driver "Produces"
+ *                              elements should use this API
+ *                              to indicate previous produced elements
+ *                              are now consumed.
  *
- * A chain in which the driver "Produces" elements should use this API
- * to indicate previous produced elements are now consumed.
+ * @p_chain: Chain.
  *
- * @param p_chain
+ * Return: Void.
  */
 static inline void qed_chain_return_produced(struct qed_chain *p_chain)
 {
@@ -353,15 +356,15 @@ static inline void qed_chain_return_produced(struct qed_chain *p_chain)
 }
 
 /**
- * @brief qed_chain_produce -
+ * qed_chain_produce(): A chain in which the driver "Produces"
+ *                      elements should use this to get a pointer to
+ *                      the next element which can be "Produced". It's driver
+ *                      responsibility to validate that the chain has room for
+ *                      new element.
  *
- * A chain in which the driver "Produces" elements should use this to get
- * a pointer to the next element which can be "Produced". It's driver
- * responsibility to validate that the chain has room for new element.
+ * @p_chain: Chain.
  *
- * @param p_chain
- *
- * @return void*, a pointer to next element
+ * Return: void*, a pointer to next element.
  */
 static inline void *qed_chain_produce(struct qed_chain *p_chain)
 {
@@ -395,14 +398,11 @@ static inline void *qed_chain_produce(struct qed_chain *p_chain)
 }
 
 /**
- * @brief qed_chain_get_capacity -
- *
- * Get the maximum number of BDs in chain
+ * qed_chain_get_capacity(): Get the maximum number of BDs in chain
  *
- * @param p_chain
- * @param num
+ * @p_chain: Chain.
  *
- * @return number of unusable BDs
+ * Return: number of unusable BDs.
  */
 static inline u32 qed_chain_get_capacity(struct qed_chain *p_chain)
 {
@@ -410,12 +410,14 @@ static inline u32 qed_chain_get_capacity(struct qed_chain *p_chain)
 }
 
 /**
- * @brief qed_chain_recycle_consumed -
+ * qed_chain_recycle_consumed(): Returns an element which was
+ *                               previously consumed;
+ *                               Increments producers so they could
+ *                               be written to FW.
  *
- * Returns an element which was previously consumed;
- * Increments producers so they could be written to FW.
+ * @p_chain: Chain.
  *
- * @param p_chain
+ * Return: Void.
  */
 static inline void qed_chain_recycle_consumed(struct qed_chain *p_chain)
 {
@@ -427,14 +429,13 @@ static inline void qed_chain_recycle_consumed(struct qed_chain *p_chain)
 }
 
 /**
- * @brief qed_chain_consume -
+ * qed_chain_consume(): A Chain in which the driver utilizes data written
+ *                      by a different source (i.e., FW) should use this to
+ *                      access passed buffers.
  *
- * A Chain in which the driver utilizes data written by a different source
- * (i.e., FW) should use this to access passed buffers.
+ * @p_chain: Chain.
  *
- * @param p_chain
- *
- * @return void*, a pointer to the next buffer written
+ * Return: void*, a pointer to the next buffer written.
  */
 static inline void *qed_chain_consume(struct qed_chain *p_chain)
 {
@@ -468,9 +469,11 @@ static inline void *qed_chain_consume(struct qed_chain *p_chain)
 }
 
 /**
- * @brief qed_chain_reset - Resets the chain to its start state
+ * qed_chain_reset(): Resets the chain to its start state.
+ *
+ * @p_chain: pointer to a previously allocated chain.
  *
- * @param p_chain pointer to a previously allocated chain
+ * Return Void.
  */
 static inline void qed_chain_reset(struct qed_chain *p_chain)
 {
@@ -519,13 +522,12 @@ static inline void qed_chain_reset(struct qed_chain *p_chain)
 }
 
 /**
- * @brief qed_chain_get_last_elem -
+ * qed_chain_get_last_elem(): Returns a pointer to the last element of the
+ *                            chain.
  *
- * Returns a pointer to the last element of the chain
+ * @p_chain: Chain.
  *
- * @param p_chain
- *
- * @return void*
+ * Return: void*.
  */
 static inline void *qed_chain_get_last_elem(struct qed_chain *p_chain)
 {
@@ -563,10 +565,13 @@ out:
 }
 
 /**
- * @brief qed_chain_set_prod - sets the prod to the given value
+ * qed_chain_set_prod(): sets the prod to the given value.
+ *
+ * @p_chain: Chain.
+ * @prod_idx: Prod Idx.
+ * @p_prod_elem: Prod elem.
  *
- * @param prod_idx
- * @param p_prod_elem
+ * Return Void.
  */
 static inline void qed_chain_set_prod(struct qed_chain *p_chain,
 				      u32 prod_idx, void *p_prod_elem)
@@ -610,9 +615,11 @@ static inline void qed_chain_set_prod(struct qed_chain *p_chain,
 }
 
 /**
- * @brief qed_chain_pbl_zero_mem - set chain memory to 0
+ * qed_chain_pbl_zero_mem(): set chain memory to 0.
+ *
+ * @p_chain: Chain.
  *
- * @param p_chain
+ * Return: Void.
  */
 static inline void qed_chain_pbl_zero_mem(struct qed_chain *p_chain)
 {
diff --git a/include/linux/qed/qed_eth_if.h b/include/linux/qed/qed_eth_if.h
index 812a4d751163..e1bf3219b4e6 100644
--- a/include/linux/qed/qed_eth_if.h
+++ b/include/linux/qed/qed_eth_if.h
@@ -145,12 +145,6 @@ struct qed_filter_mcast_params {
 	unsigned char mac[64][ETH_ALEN];
 };
 
-union qed_filter_type_params {
-	enum qed_filter_rx_mode_type accept_flags;
-	struct qed_filter_ucast_params ucast;
-	struct qed_filter_mcast_params mcast;
-};
-
 enum qed_filter_type {
 	QED_FILTER_TYPE_UCAST,
 	QED_FILTER_TYPE_MCAST,
@@ -158,11 +152,6 @@ enum qed_filter_type {
 	QED_MAX_FILTER_TYPES,
 };
 
-struct qed_filter_params {
-	enum qed_filter_type type;
-	union qed_filter_type_params filter;
-};
-
 struct qed_tunn_params {
 	u16 vxlan_port;
 	u8 update_vxlan_port;
@@ -314,8 +303,14 @@ struct qed_eth_ops {
 
 	int (*q_tx_stop)(struct qed_dev *cdev, u8 rss_id, void *handle);
 
-	int (*filter_config)(struct qed_dev *cdev,
-			     struct qed_filter_params *params);
+	int (*filter_config_rx_mode)(struct qed_dev *cdev,
+				     enum qed_filter_rx_mode_type type);
+
+	int (*filter_config_ucast)(struct qed_dev *cdev,
+				   struct qed_filter_ucast_params *params);
+
+	int (*filter_config_mcast)(struct qed_dev *cdev,
+				   struct qed_filter_mcast_params *params);
 
 	int (*fastpath_stop)(struct qed_dev *cdev);
 
@@ -336,7 +331,7 @@ struct qed_eth_ops {
 	int (*configure_arfs_searcher)(struct qed_dev *cdev,
 				       enum qed_filter_config_mode mode);
 	int (*get_coalesce)(struct qed_dev *cdev, u16 *coal, void *handle);
-	int (*req_bulletin_update_mac)(struct qed_dev *cdev, u8 *mac);
+	int (*req_bulletin_update_mac)(struct qed_dev *cdev, const u8 *mac);
 };
 
 const struct qed_eth_ops *qed_get_eth_ops(void);
diff --git a/include/linux/qed/qed_if.h b/include/linux/qed/qed_if.h
index 850b98991670..6dc4943d8aec 100644
--- a/include/linux/qed/qed_if.h
+++ b/include/linux/qed/qed_if.h
@@ -24,6 +24,9 @@
 #include <linux/io-64-nonatomic-lo-hi.h>
 #include <net/devlink.h>
 
+#define QED_TX_SWS_TIMER_DFLT  500
+#define QED_TWO_MSL_TIMER_DFLT 4000
+
 enum dcbx_protocol_type {
 	DCBX_PROTOCOL_ISCSI,
 	DCBX_PROTOCOL_FCOE,
@@ -588,7 +591,7 @@ enum qed_int_mode {
 };
 
 struct qed_sb_info {
-	struct status_block_e4 *sb_virt;
+	struct status_block *sb_virt;
 	dma_addr_t sb_phys;
 	u32 sb_ack; /* Last given ack */
 	u16 igu_sb_id;
@@ -613,7 +616,6 @@ enum qed_hw_err_type {
 enum qed_dev_type {
 	QED_DEV_TYPE_BB,
 	QED_DEV_TYPE_AH,
-	QED_DEV_TYPE_E5,
 };
 
 struct qed_dev_info {
@@ -650,6 +652,7 @@ struct qed_dev_info {
 
 	bool wol_support;
 	bool smart_an;
+	bool esl;
 
 	/* MBI version */
 	u32 mbi_version;
@@ -805,6 +808,12 @@ struct qed_devlink {
 	struct devlink_health_reporter *fw_reporter;
 };
 
+struct qed_sb_info_dbg {
+	u32 igu_prod;
+	u32 igu_cons;
+	u16 pi[PIS_PER_SB];
+};
+
 struct qed_common_cb_ops {
 	void (*arfs_filter_op)(void *dev, void *fltr, u8 fw_rc);
 	void (*link_update)(void *dev, struct qed_link_output *link);
@@ -819,47 +828,47 @@ struct qed_common_cb_ops {
 
 struct qed_selftest_ops {
 /**
- * @brief selftest_interrupt - Perform interrupt test
+ * selftest_interrupt(): Perform interrupt test.
  *
- * @param cdev
+ * @cdev: Qed dev pointer.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*selftest_interrupt)(struct qed_dev *cdev);
 
 /**
- * @brief selftest_memory - Perform memory test
+ * selftest_memory(): Perform memory test.
  *
- * @param cdev
+ * @cdev: Qed dev pointer.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*selftest_memory)(struct qed_dev *cdev);
 
 /**
- * @brief selftest_register - Perform register test
+ * selftest_register(): Perform register test.
  *
- * @param cdev
+ * @cdev: Qed dev pointer.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*selftest_register)(struct qed_dev *cdev);
 
 /**
- * @brief selftest_clock - Perform clock test
+ * selftest_clock(): Perform clock test.
  *
- * @param cdev
+ * @cdev: Qed dev pointer.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*selftest_clock)(struct qed_dev *cdev);
 
 /**
- * @brief selftest_nvram - Perform nvram test
+ * selftest_nvram(): Perform nvram test.
  *
- * @param cdev
+ * @cdev: Qed dev pointer.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*selftest_nvram) (struct qed_dev *cdev);
 };
@@ -927,47 +936,53 @@ struct qed_common_ops {
 				  enum qed_hw_err_type err_type);
 
 /**
- * @brief can_link_change - can the instance change the link or not
+ * can_link_change(): can the instance change the link or not.
  *
- * @param cdev
+ * @cdev: Qed dev pointer.
  *
- * @return true if link-change is allowed, false otherwise.
+ * Return: true if link-change is allowed, false otherwise.
  */
 	bool (*can_link_change)(struct qed_dev *cdev);
 
 /**
- * @brief set_link - set links according to params
+ * set_link(): set links according to params.
  *
- * @param cdev
- * @param params - values used to override the default link configuration
+ * @cdev: Qed dev pointer.
+ * @params: values used to override the default link configuration.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int		(*set_link)(struct qed_dev *cdev,
 				    struct qed_link_params *params);
 
 /**
- * @brief get_link - returns the current link state.
+ * get_link(): returns the current link state.
  *
- * @param cdev
- * @param if_link - structure to be filled with current link configuration.
+ * @cdev: Qed dev pointer.
+ * @if_link: structure to be filled with current link configuration.
+ *
+ * Return: Void.
  */
 	void		(*get_link)(struct qed_dev *cdev,
 				    struct qed_link_output *if_link);
 
 /**
- * @brief - drains chip in case Tx completions fail to arrive due to pause.
+ * drain(): drains chip in case Tx completions fail to arrive due to pause.
+ *
+ * @cdev: Qed dev pointer.
  *
- * @param cdev
+ * Return: Int.
  */
 	int		(*drain)(struct qed_dev *cdev);
 
 /**
- * @brief update_msglvl - update module debug level
+ * update_msglvl(): update module debug level.
  *
- * @param cdev
- * @param dp_module
- * @param dp_level
+ * @cdev: Qed dev pointer.
+ * @dp_module: Debug module.
+ * @dp_level: Debug level.
+ *
+ * Return: Void.
  */
 	void		(*update_msglvl)(struct qed_dev *cdev,
 					 u32 dp_module,
@@ -981,70 +996,73 @@ struct qed_common_ops {
 				      struct qed_chain *p_chain);
 
 /**
- * @brief nvm_flash - Flash nvm data.
+ * nvm_flash(): Flash nvm data.
  *
- * @param cdev
- * @param name - file containing the data
+ * @cdev: Qed dev pointer.
+ * @name: file containing the data.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*nvm_flash)(struct qed_dev *cdev, const char *name);
 
 /**
- * @brief nvm_get_image - reads an entire image from nvram
+ * nvm_get_image(): reads an entire image from nvram.
  *
- * @param cdev
- * @param type - type of the request nvram image
- * @param buf - preallocated buffer to fill with the image
- * @param len - length of the allocated buffer
+ * @cdev: Qed dev pointer.
+ * @type: type of the request nvram image.
+ * @buf: preallocated buffer to fill with the image.
+ * @len: length of the allocated buffer.
  *
- * @return 0 on success, error otherwise
+ * Return: 0 on success, error otherwise.
  */
 	int (*nvm_get_image)(struct qed_dev *cdev,
 			     enum qed_nvm_images type, u8 *buf, u16 len);
 
 /**
- * @brief set_coalesce - Configure Rx coalesce value in usec
+ * set_coalesce(): Configure Rx coalesce value in usec.
  *
- * @param cdev
- * @param rx_coal - Rx coalesce value in usec
- * @param tx_coal - Tx coalesce value in usec
- * @param qid - Queue index
- * @param sb_id - Status Block Id
+ * @cdev: Qed dev pointer.
+ * @rx_coal: Rx coalesce value in usec.
+ * @tx_coal: Tx coalesce value in usec.
+ * @handle: Handle.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*set_coalesce)(struct qed_dev *cdev,
 			    u16 rx_coal, u16 tx_coal, void *handle);
 
 /**
- * @brief set_led - Configure LED mode
+ * set_led() - Configure LED mode.
  *
- * @param cdev
- * @param mode - LED mode
+ * @cdev: Qed dev pointer.
+ * @mode: LED mode.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*set_led)(struct qed_dev *cdev,
 		       enum qed_led_mode mode);
 
 /**
- * @brief attn_clr_enable - Prevent attentions from being reasserted
+ * attn_clr_enable(): Prevent attentions from being reasserted.
+ *
+ * @cdev: Qed dev pointer.
+ * @clr_enable: Clear enable.
  *
- * @param cdev
- * @param clr_enable
+ * Return: Void.
  */
 	void (*attn_clr_enable)(struct qed_dev *cdev, bool clr_enable);
 
 /**
- * @brief db_recovery_add - add doorbell information to the doorbell
- * recovery mechanism.
+ * db_recovery_add(): add doorbell information to the doorbell
+ *                    recovery mechanism.
+ *
+ * @cdev: Qed dev pointer.
+ * @db_addr: Doorbell address.
+ * @db_data: Dddress of where db_data is stored.
+ * @db_width: Doorbell is 32b or 64b.
+ * @db_space: Doorbell recovery addresses are user or kernel space.
  *
- * @param cdev
- * @param db_addr - doorbell address
- * @param db_data - address of where db_data is stored
- * @param db_is_32b - doorbell is 32b pr 64b
- * @param db_is_user - doorbell recovery addresses are user or kernel space
+ * Return: Int.
  */
 	int (*db_recovery_add)(struct qed_dev *cdev,
 			       void __iomem *db_addr,
@@ -1053,120 +1071,143 @@ struct qed_common_ops {
 			       enum qed_db_rec_space db_space);
 
 /**
- * @brief db_recovery_del - remove doorbell information from the doorbell
+ * db_recovery_del(): remove doorbell information from the doorbell
  * recovery mechanism. db_data serves as key (db_addr is not unique).
  *
- * @param cdev
- * @param db_addr - doorbell address
- * @param db_data - address where db_data is stored. Serves as key for the
- *		    entry to delete.
+ * @cdev: Qed dev pointer.
+ * @db_addr: Doorbell address.
+ * @db_data: Address where db_data is stored. Serves as key for the
+ *           entry to delete.
+ *
+ * Return: Int.
  */
 	int (*db_recovery_del)(struct qed_dev *cdev,
 			       void __iomem *db_addr, void *db_data);
 
 /**
- * @brief recovery_process - Trigger a recovery process
+ * recovery_process(): Trigger a recovery process.
  *
- * @param cdev
+ * @cdev: Qed dev pointer.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*recovery_process)(struct qed_dev *cdev);
 
 /**
- * @brief recovery_prolog - Execute the prolog operations of a recovery process
+ * recovery_prolog(): Execute the prolog operations of a recovery process.
  *
- * @param cdev
+ * @cdev: Qed dev pointer.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*recovery_prolog)(struct qed_dev *cdev);
 
 /**
- * @brief update_drv_state - API to inform the change in the driver state.
+ * update_drv_state(): API to inform the change in the driver state.
  *
- * @param cdev
- * @param active
+ * @cdev: Qed dev pointer.
+ * @active: Active
  *
+ * Return: Int.
  */
 	int (*update_drv_state)(struct qed_dev *cdev, bool active);
 
 /**
- * @brief update_mac - API to inform the change in the mac address
+ * update_mac(): API to inform the change in the mac address.
  *
- * @param cdev
- * @param mac
+ * @cdev: Qed dev pointer.
+ * @mac: MAC.
  *
+ * Return: Int.
  */
-	int (*update_mac)(struct qed_dev *cdev, u8 *mac);
+	int (*update_mac)(struct qed_dev *cdev, const u8 *mac);
 
 /**
- * @brief update_mtu - API to inform the change in the mtu
+ * update_mtu(): API to inform the change in the mtu.
  *
- * @param cdev
- * @param mtu
+ * @cdev: Qed dev pointer.
+ * @mtu: MTU.
  *
+ * Return: Int.
  */
 	int (*update_mtu)(struct qed_dev *cdev, u16 mtu);
 
 /**
- * @brief update_wol - update of changes in the WoL configuration
+ * update_wol(): Update of changes in the WoL configuration.
+ *
+ * @cdev: Qed dev pointer.
+ * @enabled: true iff WoL should be enabled.
  *
- * @param cdev
- * @param enabled - true iff WoL should be enabled.
+ * Return: Int.
  */
 	int (*update_wol) (struct qed_dev *cdev, bool enabled);
 
 /**
- * @brief read_module_eeprom
+ * read_module_eeprom(): Read EEPROM.
  *
- * @param cdev
- * @param buf - buffer
- * @param dev_addr - PHY device memory region
- * @param offset - offset into eeprom contents to be read
- * @param len - buffer length, i.e., max bytes to be read
+ * @cdev: Qed dev pointer.
+ * @buf: buffer.
+ * @dev_addr: PHY device memory region.
+ * @offset: offset into eeprom contents to be read.
+ * @len: buffer length, i.e., max bytes to be read.
+ *
+ * Return: Int.
  */
 	int (*read_module_eeprom)(struct qed_dev *cdev,
 				  char *buf, u8 dev_addr, u32 offset, u32 len);
 
 /**
- * @brief get_affin_hwfn_idx
+ * get_affin_hwfn_idx(): Get affine HW function.
+ *
+ * @cdev: Qed dev pointer.
  *
- * @param cdev
+ * Return: u8.
  */
 	u8 (*get_affin_hwfn_idx)(struct qed_dev *cdev);
 
 /**
- * @brief read_nvm_cfg - Read NVM config attribute value.
- * @param cdev
- * @param buf - buffer
- * @param cmd - NVM CFG command id
- * @param entity_id - Entity id
+ * read_nvm_cfg(): Read NVM config attribute value.
+ *
+ * @cdev: Qed dev pointer.
+ * @buf: Buffer.
+ * @cmd: NVM CFG command id.
+ * @entity_id: Entity id.
  *
+ * Return: Int.
  */
 	int (*read_nvm_cfg)(struct qed_dev *cdev, u8 **buf, u32 cmd,
 			    u32 entity_id);
 /**
- * @brief read_nvm_cfg - Read NVM config attribute value.
- * @param cdev
- * @param cmd - NVM CFG command id
+ * read_nvm_cfg_len(): Read NVM config attribute value.
  *
- * @return config id length, 0 on error.
+ * @cdev: Qed dev pointer.
+ * @cmd: NVM CFG command id.
+ *
+ * Return: config id length, 0 on error.
  */
 	int (*read_nvm_cfg_len)(struct qed_dev *cdev, u32 cmd);
 
 /**
- * @brief set_grc_config - Configure value for grc config id.
- * @param cdev
- * @param cfg_id - grc config id
- * @param val - grc config value
+ * set_grc_config(): Configure value for grc config id.
+ *
+ * @cdev: Qed dev pointer.
+ * @cfg_id: grc config id
+ * @val: grc config value
  *
+ * Return: Int.
  */
 	int (*set_grc_config)(struct qed_dev *cdev, u32 cfg_id, u32 val);
 
 	struct devlink* (*devlink_register)(struct qed_dev *cdev);
 
 	void (*devlink_unregister)(struct devlink *devlink);
+
+	__printf(2, 3) void (*mfw_report)(struct qed_dev *cdev, char *fmt, ...);
+
+	int (*get_sb_info)(struct qed_dev *cdev, struct qed_sb_info *sb,
+			   u16 qid, struct qed_sb_info_dbg *sb_dbg);
+
+	int (*get_esl_status)(struct qed_dev *cdev, bool *esl_active);
 };
 
 #define MASK_FIELD(_name, _value) \
@@ -1386,7 +1427,7 @@ static inline u16 qed_sb_update_sb_idx(struct qed_sb_info *sb_info)
 	u16 rc = 0;
 
 	prod = le32_to_cpu(sb_info->sb_virt->prod_index) &
-	       STATUS_BLOCK_E4_PROD_INDEX_MASK;
+	       STATUS_BLOCK_PROD_INDEX_MASK;
 	if (sb_info->sb_ack != prod) {
 		sb_info->sb_ack = prod;
 		rc |= QED_SB_IDX;
@@ -1397,18 +1438,16 @@ static inline u16 qed_sb_update_sb_idx(struct qed_sb_info *sb_info)
 }
 
 /**
+ * qed_sb_ack(): This function creates an update command for interrupts
+ *               that is  written to the IGU.
  *
- * @brief This function creates an update command for interrupts that is
- *        written to the IGU.
- *
- * @param sb_info       - This is the structure allocated and
- *                 initialized per status block. Assumption is
- *                 that it was initialized using qed_sb_init
- * @param int_cmd       - Enable/Disable/Nop
- * @param upd_flg       - whether igu consumer should be
- *                 updated.
+ * @sb_info: This is the structure allocated and
+ *           initialized per status block. Assumption is
+ *           that it was initialized using qed_sb_init
+ * @int_cmd: Enable/Disable/Nop
+ * @upd_flg: Whether igu consumer should be updated.
  *
- * @return inline void
+ * Return: inline void.
  */
 static inline void qed_sb_ack(struct qed_sb_info *sb_info,
 			      enum igu_int_cmd int_cmd,
diff --git a/include/linux/qed/qed_iscsi_if.h b/include/linux/qed/qed_iscsi_if.h
index 04180d9af560..494cdc3cd840 100644
--- a/include/linux/qed/qed_iscsi_if.h
+++ b/include/linux/qed/qed_iscsi_if.h
@@ -182,7 +182,7 @@ struct qed_iscsi_cb_ops {
  *			@param stats - pointer to struck that would be filled
  *				we stats
  *			@return 0 on success, error otherwise.
- * @change_mac		Change MAC of interface
+ * @change_mac:		Change MAC of interface
  *			@param cdev
  *			@param handle - the connection handle.
  *			@param mac - new MAC to configure.
diff --git a/include/linux/qed/qed_ll2_if.h b/include/linux/qed/qed_ll2_if.h
index ff808d248883..5b67cd03276e 100644
--- a/include/linux/qed/qed_ll2_if.h
+++ b/include/linux/qed/qed_ll2_if.h
@@ -208,57 +208,57 @@ enum qed_ll2_xmit_flags {
 
 struct qed_ll2_ops {
 /**
- * @brief start - initializes ll2
+ * start(): Initializes ll2.
  *
- * @param cdev
- * @param params - protocol driver configuration for the ll2.
+ * @cdev: Qed dev pointer.
+ * @params: Protocol driver configuration for the ll2.
  *
- * @return 0 on success, otherwise error value.
+ * Return: 0 on success, otherwise error value.
  */
 	int (*start)(struct qed_dev *cdev, struct qed_ll2_params *params);
 
 /**
- * @brief stop - stops the ll2
+ * stop(): Stops the ll2
  *
- * @param cdev
+ * @cdev: Qed dev pointer.
  *
- * @return 0 on success, otherwise error value.
+ * Return: 0 on success, otherwise error value.
  */
 	int (*stop)(struct qed_dev *cdev);
 
 /**
- * @brief start_xmit - transmits an skb over the ll2 interface
+ * start_xmit(): Transmits an skb over the ll2 interface
  *
- * @param cdev
- * @param skb
- * @param xmit_flags - Transmit options defined by the enum qed_ll2_xmit_flags.
+ * @cdev: Qed dev pointer.
+ * @skb: SKB.
+ * @xmit_flags: Transmit options defined by the enum qed_ll2_xmit_flags.
  *
- * @return 0 on success, otherwise error value.
+ * Return: 0 on success, otherwise error value.
  */
 	int (*start_xmit)(struct qed_dev *cdev, struct sk_buff *skb,
 			  unsigned long xmit_flags);
 
 /**
- * @brief register_cb_ops - protocol driver register the callback for Rx/Tx
+ * register_cb_ops(): Protocol driver register the callback for Rx/Tx
  * packets. Should be called before `start'.
  *
- * @param cdev
- * @param cookie - to be passed to the callback functions.
- * @param ops - the callback functions to register for Rx / Tx.
+ * @cdev: Qed dev pointer.
+ * @cookie: to be passed to the callback functions.
+ * @ops: the callback functions to register for Rx / Tx.
  *
- * @return 0 on success, otherwise error value.
+ * Return: 0 on success, otherwise error value.
  */
 	void (*register_cb_ops)(struct qed_dev *cdev,
 				const struct qed_ll2_cb_ops *ops,
 				void *cookie);
 
 /**
- * @brief get LL2 related statistics
+ * get_stats(): Get LL2 related statistics.
  *
- * @param cdev
- * @param stats - pointer to struct that would be filled with stats
+ * @cdev: Qed dev pointer.
+ * @stats: Pointer to struct that would be filled with stats.
  *
- * @return 0 on success, error otherwise.
+ * Return: 0 on success, error otherwise.
  */
 	int (*get_stats)(struct qed_dev *cdev, struct qed_ll2_stats *stats);
 };
diff --git a/include/linux/qed/qed_nvmetcp_if.h b/include/linux/qed/qed_nvmetcp_if.h
index 14671bc19ed1..1d51df347560 100644
--- a/include/linux/qed/qed_nvmetcp_if.h
+++ b/include/linux/qed/qed_nvmetcp_if.h
@@ -171,6 +171,23 @@ struct nvmetcp_task_params {
  *			@param dest_port
  * @clear_all_filters: Clear all filters.
  *			@param cdev
+ * @init_read_io: Init read IO.
+ *			@task_params
+ *			@cmd_pdu_header
+ *			@nvme_cmd
+ *			@sgl_task_params
+ * @init_write_io: Init write IO.
+ *			@task_params
+ *			@cmd_pdu_header
+ *			@nvme_cmd
+ *			@sgl_task_params
+ * @init_icreq_exchange: Exchange ICReq.
+ *			@task_params
+ *			@init_conn_req_pdu_hdr
+ *			@tx_sgl_task_params
+ *			@rx_sgl_task_params
+ * @init_task_cleanup: Init task cleanup.
+ *			@task_params
  */
 struct qed_nvmetcp_ops {
 	const struct qed_common_ops *common;
diff --git a/include/linux/qed/qed_rdma_if.h b/include/linux/qed/qed_rdma_if.h
index aeb242cefebf..3b76c07fbcf8 100644
--- a/include/linux/qed/qed_rdma_if.h
+++ b/include/linux/qed/qed_rdma_if.h
@@ -662,7 +662,8 @@ struct qed_rdma_ops {
 			     u8 connection_handle,
 			     struct qed_ll2_stats *p_stats);
 	int (*ll2_set_mac_filter)(struct qed_dev *cdev,
-				  u8 *old_mac_address, u8 *new_mac_address);
+				  u8 *old_mac_address,
+				  const u8 *new_mac_address);
 
 	int (*iwarp_set_engine_affin)(struct qed_dev *cdev, bool b_reset);
 
diff --git a/include/linux/qed/rdma_common.h b/include/linux/qed/rdma_common.h
index bab078b25834..6dfed163ab6c 100644
--- a/include/linux/qed/rdma_common.h
+++ b/include/linux/qed/rdma_common.h
@@ -27,6 +27,7 @@
 #define RDMA_MAX_PDS			(64 * 1024)
 #define RDMA_MAX_XRC_SRQS                       (1024)
 #define RDMA_MAX_SRQS                           (32 * 1024)
+#define RDMA_MAX_IRQ_ELEMS_IN_PAGE      (128)
 
 #define RDMA_NUM_STATISTIC_COUNTERS	MAX_NUM_VPORTS
 #define RDMA_NUM_STATISTIC_COUNTERS_K2	MAX_NUM_VPORTS_K2
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 18ebd39c9487..fd692b4a41d5 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -91,7 +91,7 @@ extern bool qid_valid(struct kqid qid);
  *
  *	When there is no mapping defined for the user-namespace, type,
  *	qid tuple an invalid kqid is returned.  Callers are expected to
- *	test for and handle handle invalid kqids being returned.
+ *	test for and handle invalid kqids being returned.
  *	Invalid kqids may be tested for using qid_valid().
  */
 static inline struct kqid make_kqid(struct user_namespace *from,
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index 64ad900ac742..f7c1d21c2f39 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -9,8 +9,10 @@
 #define _LINUX_RADIX_TREE_H
 
 #include <linux/bitops.h>
-#include <linux/kernel.h>
+#include <linux/gfp.h>
 #include <linux/list.h>
+#include <linux/lockdep.h>
+#include <linux/math.h>
 #include <linux/percpu.h>
 #include <linux/preempt.h>
 #include <linux/rcupdate.h>
diff --git a/include/linux/raid/pq.h b/include/linux/raid/pq.h
index 154e954b711d..d6e5a1feb947 100644
--- a/include/linux/raid/pq.h
+++ b/include/linux/raid/pq.h
@@ -81,7 +81,7 @@ struct raid6_calls {
 	void (*xor_syndrome)(int, int, int, size_t, void **);
 	int  (*valid)(void);	/* Returns 1 if this routine set is usable */
 	const char *name;	/* Name of this routine set */
-	int prefer;		/* Has special performance attribute */
+	int priority;		/* Relative priority ranking if non-zero */
 };
 
 /* Selected algorithm */
diff --git a/include/linux/raid/xor.h b/include/linux/raid/xor.h
index 2a9fee8ddae3..51b811b62322 100644
--- a/include/linux/raid/xor.h
+++ b/include/linux/raid/xor.h
@@ -11,13 +11,20 @@ struct xor_block_template {
         struct xor_block_template *next;
         const char *name;
         int speed;
-	void (*do_2)(unsigned long, unsigned long *, unsigned long *);
-	void (*do_3)(unsigned long, unsigned long *, unsigned long *,
-		     unsigned long *);
-	void (*do_4)(unsigned long, unsigned long *, unsigned long *,
-		     unsigned long *, unsigned long *);
-	void (*do_5)(unsigned long, unsigned long *, unsigned long *,
-		     unsigned long *, unsigned long *, unsigned long *);
+	void (*do_2)(unsigned long, unsigned long * __restrict,
+		     const unsigned long * __restrict);
+	void (*do_3)(unsigned long, unsigned long * __restrict,
+		     const unsigned long * __restrict,
+		     const unsigned long * __restrict);
+	void (*do_4)(unsigned long, unsigned long * __restrict,
+		     const unsigned long * __restrict,
+		     const unsigned long * __restrict,
+		     const unsigned long * __restrict);
+	void (*do_5)(unsigned long, unsigned long * __restrict,
+		     const unsigned long * __restrict,
+		     const unsigned long * __restrict,
+		     const unsigned long * __restrict,
+		     const unsigned long * __restrict);
 };
 
 #endif
diff --git a/include/linux/random.h b/include/linux/random.h
index f45b8be3e3c4..f673fbb838b3 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -1,9 +1,5 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-/*
- * include/linux/random.h
- *
- * Include file for the random number generator.
- */
+
 #ifndef _LINUX_RANDOM_H
 #define _LINUX_RANDOM_H
 
@@ -14,14 +10,10 @@
 
 #include <uapi/linux/random.h>
 
-struct random_ready_callback {
-	struct list_head list;
-	void (*func)(struct random_ready_callback *rdy);
-	struct module *owner;
-};
+struct notifier_block;
 
-extern void add_device_randomness(const void *, unsigned int);
-extern void add_bootloader_randomness(const void *, unsigned int);
+extern void add_device_randomness(const void *, size_t);
+extern void add_bootloader_randomness(const void *, size_t);
 
 #if defined(LATENT_ENTROPY_PLUGIN) && !defined(__CHECKER__)
 static inline void add_latent_entropy(void)
@@ -35,15 +27,25 @@ static inline void add_latent_entropy(void) {}
 
 extern void add_input_randomness(unsigned int type, unsigned int code,
 				 unsigned int value) __latent_entropy;
-extern void add_interrupt_randomness(int irq, int irq_flags) __latent_entropy;
+extern void add_interrupt_randomness(int irq) __latent_entropy;
+extern void add_hwgenerator_randomness(const void *buffer, size_t count,
+				       size_t entropy);
+#if IS_ENABLED(CONFIG_VMGENID)
+extern void add_vmfork_randomness(const void *unique_vm_id, size_t size);
+extern int register_random_vmfork_notifier(struct notifier_block *nb);
+extern int unregister_random_vmfork_notifier(struct notifier_block *nb);
+#else
+static inline int register_random_vmfork_notifier(struct notifier_block *nb) { return 0; }
+static inline int unregister_random_vmfork_notifier(struct notifier_block *nb) { return 0; }
+#endif
 
-extern void get_random_bytes(void *buf, int nbytes);
+extern void get_random_bytes(void *buf, size_t nbytes);
 extern int wait_for_random_bytes(void);
 extern int __init rand_initialize(void);
 extern bool rng_is_initialized(void);
-extern int add_random_ready_callback(struct random_ready_callback *rdy);
-extern void del_random_ready_callback(struct random_ready_callback *rdy);
-extern int __must_check get_random_bytes_arch(void *buf, int nbytes);
+extern int register_random_ready_notifier(struct notifier_block *nb);
+extern int unregister_random_ready_notifier(struct notifier_block *nb);
+extern size_t __must_check get_random_bytes_arch(void *buf, size_t nbytes);
 
 #ifndef MODULE
 extern const struct file_operations random_fops, urandom_fops;
@@ -87,7 +89,7 @@ static inline unsigned long get_random_canary(void)
 
 /* Calls wait_for_random_bytes() and then calls get_random_bytes(buf, nbytes).
  * Returns the result of the call to wait_for_random_bytes. */
-static inline int get_random_bytes_wait(void *buf, int nbytes)
+static inline int get_random_bytes_wait(void *buf, size_t nbytes)
 {
 	int ret = wait_for_random_bytes();
 	get_random_bytes(buf, nbytes);
@@ -158,4 +160,9 @@ static inline bool __init arch_get_random_long_early(unsigned long *v)
 }
 #endif
 
+#ifdef CONFIG_SMP
+extern int random_prepare_cpu(unsigned int cpu);
+extern int random_online_cpu(unsigned int cpu);
+#endif
+
 #endif /* _LINUX_RANDOM_H */
diff --git a/include/linux/randomize_kstack.h b/include/linux/randomize_kstack.h
index bebc911161b6..1468caf001c0 100644
--- a/include/linux/randomize_kstack.h
+++ b/include/linux/randomize_kstack.h
@@ -2,6 +2,7 @@
 #ifndef _LINUX_RANDOMIZE_KSTACK_H
 #define _LINUX_RANDOMIZE_KSTACK_H
 
+#ifdef CONFIG_RANDOMIZE_KSTACK_OFFSET
 #include <linux/kernel.h>
 #include <linux/jump_label.h>
 #include <linux/percpu-defs.h>
@@ -16,8 +17,20 @@ DECLARE_PER_CPU(u32, kstack_offset);
  * alignment. Also, since this use is being explicitly masked to a max of
  * 10 bits, stack-clash style attacks are unlikely. For more details see
  * "VLAs" in Documentation/process/deprecated.rst
+ *
+ * The normal __builtin_alloca() is initialized with INIT_STACK_ALL (currently
+ * only with Clang and not GCC). Initializing the unused area on each syscall
+ * entry is expensive, and generating an implicit call to memset() may also be
+ * problematic (such as in noinstr functions). Therefore, if the compiler
+ * supports it (which it should if it initializes allocas), always use the
+ * "uninitialized" variant of the builtin.
  */
-void *__builtin_alloca(size_t size);
+#if __has_builtin(__builtin_alloca_uninitialized)
+#define __kstack_alloca __builtin_alloca_uninitialized
+#else
+#define __kstack_alloca __builtin_alloca
+#endif
+
 /*
  * Use, at most, 10 bits of entropy. We explicitly cap this to keep the
  * "VLA" from being unbounded (see above). 10 bits leaves enough room for
@@ -36,7 +49,7 @@ void *__builtin_alloca(size_t size);
 	if (static_branch_maybe(CONFIG_RANDOMIZE_KSTACK_OFFSET_DEFAULT,	\
 				&randomize_kstack_offset)) {		\
 		u32 offset = raw_cpu_read(kstack_offset);		\
-		u8 *ptr = __builtin_alloca(KSTACK_OFFSET_MAX(offset));	\
+		u8 *ptr = __kstack_alloca(KSTACK_OFFSET_MAX(offset));	\
 		/* Keep allocation even after "ptr" loses scope. */	\
 		asm volatile("" :: "r"(ptr) : "memory");		\
 	}								\
@@ -50,5 +63,9 @@ void *__builtin_alloca(size_t size);
 		raw_cpu_write(kstack_offset, offset);			\
 	}								\
 } while (0)
+#else /* CONFIG_RANDOMIZE_KSTACK_OFFSET */
+#define add_random_kstack_offset()		do { } while (0)
+#define choose_random_kstack_offset(rand)	do { } while (0)
+#endif /* CONFIG_RANDOMIZE_KSTACK_OFFSET */
 
 #endif
diff --git a/include/linux/ratelimit_types.h b/include/linux/ratelimit_types.h
index b676aa419eef..c21c7f8103e2 100644
--- a/include/linux/ratelimit_types.h
+++ b/include/linux/ratelimit_types.h
@@ -4,7 +4,7 @@
 
 #include <linux/bits.h>
 #include <linux/param.h>
-#include <linux/spinlock_types.h>
+#include <linux/spinlock_types_raw.h>
 
 #define DEFAULT_RATELIMIT_INTERVAL	(5 * HZ)
 #define DEFAULT_RATELIMIT_BURST		10
diff --git a/include/linux/rcu_segcblist.h b/include/linux/rcu_segcblist.h
index 3db96c4f45fd..659d13a7ddaa 100644
--- a/include/linux/rcu_segcblist.h
+++ b/include/linux/rcu_segcblist.h
@@ -69,7 +69,7 @@ struct rcu_cblist {
  *
  *
  *  ----------------------------------------------------------------------------
- *  |                         SEGCBLIST_SOFTIRQ_ONLY                           |
+ *  |                              SEGCBLIST_RCU_CORE                          |
  *  |                                                                          |
  *  |  Callbacks processed by rcu_core() from softirqs or local                |
  *  |  rcuc kthread, without holding nocb_lock.                                |
@@ -77,7 +77,7 @@ struct rcu_cblist {
  *                                         |
  *                                         v
  *  ----------------------------------------------------------------------------
- *  |                        SEGCBLIST_OFFLOADED                               |
+ *  |       SEGCBLIST_RCU_CORE | SEGCBLIST_LOCKING | SEGCBLIST_OFFLOADED       |
  *  |                                                                          |
  *  | Callbacks processed by rcu_core() from softirqs or local                 |
  *  | rcuc kthread, while holding nocb_lock. Waking up CB and GP kthreads,     |
@@ -89,7 +89,9 @@ struct rcu_cblist {
  *                        |                                 |
  *                        v                                 v
  *  ---------------------------------------  ----------------------------------|
- *  |        SEGCBLIST_OFFLOADED |        |  |     SEGCBLIST_OFFLOADED |       |
+ *  |        SEGCBLIST_RCU_CORE   |       |  |     SEGCBLIST_RCU_CORE   |      |
+ *  |        SEGCBLIST_LOCKING    |       |  |     SEGCBLIST_LOCKING    |      |
+ *  |        SEGCBLIST_OFFLOADED  |       |  |     SEGCBLIST_OFFLOADED  |      |
  *  |        SEGCBLIST_KTHREAD_CB         |  |     SEGCBLIST_KTHREAD_GP        |
  *  |                                     |  |                                 |
  *  |                                     |  |                                 |
@@ -104,9 +106,10 @@ struct rcu_cblist {
  *                                         |
  *                                         v
  *  |--------------------------------------------------------------------------|
- *  |                           SEGCBLIST_OFFLOADED |                          |
- *  |                           SEGCBLIST_KTHREAD_CB |                         |
- *  |                           SEGCBLIST_KTHREAD_GP                           |
+ *  |                           SEGCBLIST_LOCKING    |                         |
+ *  |                           SEGCBLIST_OFFLOADED  |                         |
+ *  |                           SEGCBLIST_KTHREAD_GP |                         |
+ *  |                           SEGCBLIST_KTHREAD_CB                           |
  *  |                                                                          |
  *  |   Kthreads handle callbacks holding nocb_lock, local rcu_core() stops    |
  *  |   handling callbacks. Enable bypass queueing.                            |
@@ -120,7 +123,8 @@ struct rcu_cblist {
  *
  *
  *  |--------------------------------------------------------------------------|
- *  |                           SEGCBLIST_OFFLOADED |                          |
+ *  |                           SEGCBLIST_LOCKING    |                         |
+ *  |                           SEGCBLIST_OFFLOADED  |                         |
  *  |                           SEGCBLIST_KTHREAD_CB |                         |
  *  |                           SEGCBLIST_KTHREAD_GP                           |
  *  |                                                                          |
@@ -130,6 +134,22 @@ struct rcu_cblist {
  *                                      |
  *                                      v
  *  |--------------------------------------------------------------------------|
+ *  |                           SEGCBLIST_RCU_CORE   |                         |
+ *  |                           SEGCBLIST_LOCKING    |                         |
+ *  |                           SEGCBLIST_OFFLOADED  |                         |
+ *  |                           SEGCBLIST_KTHREAD_CB |                         |
+ *  |                           SEGCBLIST_KTHREAD_GP                           |
+ *  |                                                                          |
+ *  |   CB/GP kthreads handle callbacks holding nocb_lock, local rcu_core()    |
+ *  |   handles callbacks concurrently. Bypass enqueue is enabled.             |
+ *  |   Invoke RCU core so we make sure not to preempt it in the middle with   |
+ *  |   leaving some urgent work unattended within a jiffy.                    |
+ *  ----------------------------------------------------------------------------
+ *                                      |
+ *                                      v
+ *  |--------------------------------------------------------------------------|
+ *  |                           SEGCBLIST_RCU_CORE   |                         |
+ *  |                           SEGCBLIST_LOCKING    |                         |
  *  |                           SEGCBLIST_KTHREAD_CB |                         |
  *  |                           SEGCBLIST_KTHREAD_GP                           |
  *  |                                                                          |
@@ -143,7 +163,9 @@ struct rcu_cblist {
  *                     |                                 |
  *                     v                                 v
  *  ---------------------------------------------------------------------------|
- *  |                                                                          |
+ *  |                                     |                                    |
+ *  |        SEGCBLIST_RCU_CORE |         |       SEGCBLIST_RCU_CORE |         |
+ *  |        SEGCBLIST_LOCKING  |         |       SEGCBLIST_LOCKING  |         |
  *  |        SEGCBLIST_KTHREAD_CB         |       SEGCBLIST_KTHREAD_GP         |
  *  |                                     |                                    |
  *  | GP kthread woke up and              |   CB kthread woke up and           |
@@ -159,7 +181,7 @@ struct rcu_cblist {
  *                                      |
  *                                      v
  *  ----------------------------------------------------------------------------
- *  |                                   0                                      |
+ *  |                SEGCBLIST_RCU_CORE | SEGCBLIST_LOCKING                    |
  *  |                                                                          |
  *  | Callbacks processed by rcu_core() from softirqs or local                 |
  *  | rcuc kthread, while holding nocb_lock. Forbid nocb_timer to be armed.    |
@@ -168,17 +190,18 @@ struct rcu_cblist {
  *                                      |
  *                                      v
  *  ----------------------------------------------------------------------------
- *  |                         SEGCBLIST_SOFTIRQ_ONLY                           |
+ *  |                         SEGCBLIST_RCU_CORE                               |
  *  |                                                                          |
  *  |  Callbacks processed by rcu_core() from softirqs or local                |
  *  |  rcuc kthread, without holding nocb_lock.                                |
  *  ----------------------------------------------------------------------------
  */
 #define SEGCBLIST_ENABLED	BIT(0)
-#define SEGCBLIST_SOFTIRQ_ONLY	BIT(1)
-#define SEGCBLIST_KTHREAD_CB	BIT(2)
-#define SEGCBLIST_KTHREAD_GP	BIT(3)
-#define SEGCBLIST_OFFLOADED	BIT(4)
+#define SEGCBLIST_RCU_CORE	BIT(1)
+#define SEGCBLIST_LOCKING	BIT(2)
+#define SEGCBLIST_KTHREAD_CB	BIT(3)
+#define SEGCBLIST_KTHREAD_GP	BIT(4)
+#define SEGCBLIST_OFFLOADED	BIT(5)
 
 struct rcu_segcblist {
 	struct rcu_head *head;
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 434d12fe2d4f..e7c39c200e2b 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -71,7 +71,8 @@ static inline void __rcu_read_lock(void)
 static inline void __rcu_read_unlock(void)
 {
 	preempt_enable();
-	rcu_read_unlock_strict();
+	if (IS_ENABLED(CONFIG_RCU_STRICT_GRACE_PERIOD))
+		rcu_read_unlock_strict();
 }
 
 static inline int rcu_preempt_depth(void)
@@ -83,7 +84,7 @@ static inline int rcu_preempt_depth(void)
 
 /* Internal to kernel */
 void rcu_init(void);
-extern int rcu_scheduler_active __read_mostly;
+extern int rcu_scheduler_active;
 void rcu_sched_clock_irq(int user);
 void rcu_report_dead(unsigned int cpu);
 void rcutree_migrate_callbacks(int cpu);
@@ -363,6 +364,12 @@ static inline void rcu_preempt_sleep_check(void) { }
 #define rcu_check_sparse(p, space)
 #endif /* #else #ifdef __CHECKER__ */
 
+#define __unrcu_pointer(p, local)					\
+({									\
+	typeof(*p) *local = (typeof(*p) *__force)(p);			\
+	rcu_check_sparse(p, __rcu);					\
+	((typeof(*p) __force __kernel *)(local)); 			\
+})
 /**
  * unrcu_pointer - mark a pointer as not being RCU protected
  * @p: pointer needing to lose its __rcu property
@@ -370,39 +377,35 @@ static inline void rcu_preempt_sleep_check(void) { }
  * Converts @p from an __rcu pointer to a __kernel pointer.
  * This allows an __rcu pointer to be used with xchg() and friends.
  */
-#define unrcu_pointer(p)						\
-({									\
-	typeof(*p) *_________p1 = (typeof(*p) *__force)(p);		\
-	rcu_check_sparse(p, __rcu);					\
-	((typeof(*p) __force __kernel *)(_________p1)); 		\
-})
+#define unrcu_pointer(p) __unrcu_pointer(p, __UNIQUE_ID(rcu))
 
-#define __rcu_access_pointer(p, space) \
+#define __rcu_access_pointer(p, local, space) \
 ({ \
-	typeof(*p) *_________p1 = (typeof(*p) *__force)READ_ONCE(p); \
+	typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
 	rcu_check_sparse(p, space); \
-	((typeof(*p) __force __kernel *)(_________p1)); \
+	((typeof(*p) __force __kernel *)(local)); \
 })
-#define __rcu_dereference_check(p, c, space) \
+#define __rcu_dereference_check(p, local, c, space) \
 ({ \
 	/* Dependency order vs. p above. */ \
-	typeof(*p) *________p1 = (typeof(*p) *__force)READ_ONCE(p); \
+	typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
 	RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_check() usage"); \
 	rcu_check_sparse(p, space); \
-	((typeof(*p) __force __kernel *)(________p1)); \
+	((typeof(*p) __force __kernel *)(local)); \
 })
-#define __rcu_dereference_protected(p, c, space) \
+#define __rcu_dereference_protected(p, local, c, space) \
 ({ \
 	RCU_LOCKDEP_WARN(!(c), "suspicious rcu_dereference_protected() usage"); \
 	rcu_check_sparse(p, space); \
 	((typeof(*p) __force __kernel *)(p)); \
 })
-#define rcu_dereference_raw(p) \
+#define __rcu_dereference_raw(p, local) \
 ({ \
 	/* Dependency order vs. p above. */ \
-	typeof(p) ________p1 = READ_ONCE(p); \
-	((typeof(*p) __force __kernel *)(________p1)); \
+	typeof(p) local = READ_ONCE(p); \
+	((typeof(*p) __force __kernel *)(local)); \
 })
+#define rcu_dereference_raw(p) __rcu_dereference_raw(p, __UNIQUE_ID(rcu))
 
 /**
  * RCU_INITIALIZER() - statically initialize an RCU-protected global variable
@@ -489,7 +492,7 @@ do {									      \
  * when tearing down multi-linked structures after a grace period
  * has elapsed.
  */
-#define rcu_access_pointer(p) __rcu_access_pointer((p), __rcu)
+#define rcu_access_pointer(p) __rcu_access_pointer((p), __UNIQUE_ID(rcu), __rcu)
 
 /**
  * rcu_dereference_check() - rcu_dereference with debug checking
@@ -525,7 +528,8 @@ do {									      \
  * annotated as __rcu.
  */
 #define rcu_dereference_check(p, c) \
-	__rcu_dereference_check((p), (c) || rcu_read_lock_held(), __rcu)
+	__rcu_dereference_check((p), __UNIQUE_ID(rcu), \
+				(c) || rcu_read_lock_held(), __rcu)
 
 /**
  * rcu_dereference_bh_check() - rcu_dereference_bh with debug checking
@@ -540,7 +544,8 @@ do {									      \
  * rcu_read_lock() but also rcu_read_lock_bh() into account.
  */
 #define rcu_dereference_bh_check(p, c) \
-	__rcu_dereference_check((p), (c) || rcu_read_lock_bh_held(), __rcu)
+	__rcu_dereference_check((p), __UNIQUE_ID(rcu), \
+				(c) || rcu_read_lock_bh_held(), __rcu)
 
 /**
  * rcu_dereference_sched_check() - rcu_dereference_sched with debug checking
@@ -555,7 +560,8 @@ do {									      \
  * only rcu_read_lock() but also rcu_read_lock_sched() into account.
  */
 #define rcu_dereference_sched_check(p, c) \
-	__rcu_dereference_check((p), (c) || rcu_read_lock_sched_held(), \
+	__rcu_dereference_check((p), __UNIQUE_ID(rcu), \
+				(c) || rcu_read_lock_sched_held(), \
 				__rcu)
 
 /*
@@ -565,7 +571,8 @@ do {									      \
  * The no-tracing version of rcu_dereference_raw() must not call
  * rcu_read_lock_held().
  */
-#define rcu_dereference_raw_check(p) __rcu_dereference_check((p), 1, __rcu)
+#define rcu_dereference_raw_check(p) \
+	__rcu_dereference_check((p), __UNIQUE_ID(rcu), 1, __rcu)
 
 /**
  * rcu_dereference_protected() - fetch RCU pointer when updates prevented
@@ -584,7 +591,7 @@ do {									      \
  * but very ugly failures.
  */
 #define rcu_dereference_protected(p, c) \
-	__rcu_dereference_protected((p), (c), __rcu)
+	__rcu_dereference_protected((p), __UNIQUE_ID(rcu), (c), __rcu)
 
 
 /**
@@ -917,7 +924,7 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
  *
  *     kvfree_rcu(ptr);
  *
- * where @ptr is a pointer to kvfree().
+ * where @ptr is the pointer to be freed by kvfree().
  *
  * Please note, head-less way of freeing is permitted to
  * use from a context that has to follow might_sleep()
diff --git a/include/linux/rcupdate_trace.h b/include/linux/rcupdate_trace.h
index 86c8f6c98412..6f9c35817398 100644
--- a/include/linux/rcupdate_trace.h
+++ b/include/linux/rcupdate_trace.h
@@ -31,7 +31,7 @@ static inline int rcu_read_lock_trace_held(void)
 
 #ifdef CONFIG_TASKS_TRACE_RCU
 
-void rcu_read_unlock_trace_special(struct task_struct *t, int nesting);
+void rcu_read_unlock_trace_special(struct task_struct *t);
 
 /**
  * rcu_read_lock_trace - mark beginning of RCU-trace read-side critical section
@@ -80,7 +80,8 @@ static inline void rcu_read_unlock_trace(void)
 		WRITE_ONCE(t->trc_reader_nesting, nesting);
 		return;  // We assume shallow reader nesting.
 	}
-	rcu_read_unlock_trace_special(t, nesting);
+	WARN_ON_ONCE(nesting != 0);
+	rcu_read_unlock_trace_special(t);
 }
 
 void call_rcu_tasks_trace(struct rcu_head *rhp, rcu_callback_t func);
diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h
index 9be015305f9f..5fed476f977f 100644
--- a/include/linux/rcutiny.h
+++ b/include/linux/rcutiny.h
@@ -64,9 +64,8 @@ static inline void rcu_softirq_qs(void)
 		rcu_tasks_qs(current, (preempt)); \
 	} while (0)
 
-static inline int rcu_needs_cpu(u64 basemono, u64 *nextevt)
+static inline int rcu_needs_cpu(void)
 {
-	*nextevt = KTIME_MAX;
 	return 0;
 }
 
@@ -85,7 +84,7 @@ static inline void rcu_irq_enter_irqson(void) { }
 static inline void rcu_irq_exit(void) { }
 static inline void rcu_irq_exit_check_preempt(void) { }
 #define rcu_is_idle_cpu(cpu) \
-	(is_idle_task(current) && !in_nmi() && !in_irq() && !in_serving_softirq())
+	(is_idle_task(current) && !in_nmi() && !in_hardirq() && !in_serving_softirq())
 static inline void exit_rcu(void) { }
 static inline bool rcu_preempt_need_deferred_qs(struct task_struct *t)
 {
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index 53209d669400..9c6cfb742504 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -19,7 +19,7 @@
 
 void rcu_softirq_qs(void);
 void rcu_note_context_switch(bool preempt);
-int rcu_needs_cpu(u64 basem, u64 *nextevt);
+int rcu_needs_cpu(void);
 void rcu_cpu_stall_reset(void);
 
 /*
@@ -62,7 +62,7 @@ static inline void rcu_irq_exit_check_preempt(void) { }
 void exit_rcu(void);
 
 void rcu_scheduler_starting(void);
-extern int rcu_scheduler_active __read_mostly;
+extern int rcu_scheduler_active;
 void rcu_end_inkernel_boot(void);
 bool rcu_inkernel_boot_has_ended(void);
 bool rcu_is_watching(void);
diff --git a/include/linux/rcuwait.h b/include/linux/rcuwait.h
index 61c56cca95c4..8052d34da782 100644
--- a/include/linux/rcuwait.h
+++ b/include/linux/rcuwait.h
@@ -47,11 +47,7 @@ static inline void prepare_to_rcuwait(struct rcuwait *w)
 	rcu_assign_pointer(w->task, current);
 }
 
-static inline void finish_rcuwait(struct rcuwait *w)
-{
-        rcu_assign_pointer(w->task, NULL);
-	__set_current_state(TASK_RUNNING);
-}
+extern void finish_rcuwait(struct rcuwait *w);
 
 #define rcuwait_wait_event(w, condition, state)				\
 ({									\
diff --git a/include/linux/rcuwait_api.h b/include/linux/rcuwait_api.h
new file mode 100644
index 000000000000..f962e28544dd
--- /dev/null
+++ b/include/linux/rcuwait_api.h
@@ -0,0 +1 @@
+#include <linux/rcuwait.h>
diff --git a/include/linux/ref_tracker.h b/include/linux/ref_tracker.h
new file mode 100644
index 000000000000..9ca353ab712b
--- /dev/null
+++ b/include/linux/ref_tracker.h
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef _LINUX_REF_TRACKER_H
+#define _LINUX_REF_TRACKER_H
+#include <linux/refcount.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/stackdepot.h>
+
+struct ref_tracker;
+
+struct ref_tracker_dir {
+#ifdef CONFIG_REF_TRACKER
+	spinlock_t		lock;
+	unsigned int		quarantine_avail;
+	refcount_t		untracked;
+	refcount_t		no_tracker;
+	bool			dead;
+	struct list_head	list; /* List of active trackers */
+	struct list_head	quarantine; /* List of dead trackers */
+#endif
+};
+
+#ifdef CONFIG_REF_TRACKER
+static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir,
+					unsigned int quarantine_count)
+{
+	INIT_LIST_HEAD(&dir->list);
+	INIT_LIST_HEAD(&dir->quarantine);
+	spin_lock_init(&dir->lock);
+	dir->quarantine_avail = quarantine_count;
+	dir->dead = false;
+	refcount_set(&dir->untracked, 1);
+	refcount_set(&dir->no_tracker, 1);
+	stack_depot_init();
+}
+
+void ref_tracker_dir_exit(struct ref_tracker_dir *dir);
+
+void ref_tracker_dir_print(struct ref_tracker_dir *dir,
+			   unsigned int display_limit);
+
+int ref_tracker_alloc(struct ref_tracker_dir *dir,
+		      struct ref_tracker **trackerp, gfp_t gfp);
+
+int ref_tracker_free(struct ref_tracker_dir *dir,
+		     struct ref_tracker **trackerp);
+
+#else /* CONFIG_REF_TRACKER */
+
+static inline void ref_tracker_dir_init(struct ref_tracker_dir *dir,
+					unsigned int quarantine_count)
+{
+}
+
+static inline void ref_tracker_dir_exit(struct ref_tracker_dir *dir)
+{
+}
+
+static inline void ref_tracker_dir_print(struct ref_tracker_dir *dir,
+					 unsigned int display_limit)
+{
+}
+
+static inline int ref_tracker_alloc(struct ref_tracker_dir *dir,
+				    struct ref_tracker **trackerp,
+				    gfp_t gfp)
+{
+	return 0;
+}
+
+static inline int ref_tracker_free(struct ref_tracker_dir *dir,
+				   struct ref_tracker **trackerp)
+{
+	return 0;
+}
+
+#endif
+
+#endif /* _LINUX_REF_TRACKER_H */
diff --git a/include/linux/refcount_api.h b/include/linux/refcount_api.h
new file mode 100644
index 000000000000..5f032589f568
--- /dev/null
+++ b/include/linux/refcount_api.h
@@ -0,0 +1 @@
+#include <linux/refcount.h>
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index e3c9a25a853a..de81a94d7b30 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -237,6 +237,10 @@ typedef void (*regmap_unlock)(void *);
  * @reg_stride: The register address stride. Valid register addresses are a
  *              multiple of this value. If set to 0, a value of 1 will be
  *              used.
+ * @reg_downshift: The number of bits to downshift the register before
+ *		   performing any operations.
+ * @reg_base: Value to be added to every register address before performing any
+ *	      operation.
  * @pad_bits: Number of bits of padding between register and value.
  * @val_bits: Number of bits in a register value, mandatory.
  *
@@ -290,6 +294,11 @@ typedef void (*regmap_unlock)(void *);
  *		  read operation on a bus such as SPI, I2C, etc. Most of the
  *		  devices do not need this.
  * @reg_write:	  Same as above for writing.
+ * @reg_update_bits: Optional callback that if filled will be used to perform
+ *		     all the update_bits(rmw) operation. Should only be provided
+ *		     if the function require special handling with lock and reg
+ *		     handling and the operation cannot be represented as a simple
+ *		     update_bits operation on a bus such as SPI, I2C, etc.
  * @fast_io:	  Register IO is fast. Use a spinlock instead of a mutex
  *	     	  to perform locking. This field is ignored if custom lock/unlock
  *	     	  functions are used (see fields lock/unlock of struct regmap_config).
@@ -355,6 +364,8 @@ struct regmap_config {
 
 	int reg_bits;
 	int reg_stride;
+	int reg_downshift;
+	unsigned int reg_base;
 	int pad_bits;
 	int val_bits;
 
@@ -372,6 +383,8 @@ struct regmap_config {
 
 	int (*reg_read)(void *context, unsigned int reg, unsigned int *val);
 	int (*reg_write)(void *context, unsigned int reg, unsigned int val);
+	int (*reg_update_bits)(void *context, unsigned int reg,
+			       unsigned int mask, unsigned int val);
 
 	bool fast_io;
 
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index bd7a73db2e66..0228caaa6741 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -90,22 +90,28 @@ enum regulator_detection_severity {
  * @set_over_current_protection: Support enabling of and setting limits for over
  *	current situation detection. Detection can be configured for three
  *	levels of severity.
- *	REGULATOR_SEVERITY_PROT should automatically shut down the regulator(s).
- *	REGULATOR_SEVERITY_ERR should indicate that over-current situation is
- *		caused by an unrecoverable error but HW does not perform
- *		automatic shut down.
- *	REGULATOR_SEVERITY_WARN should indicate situation where hardware is
- *		still believed to not be damaged but that a board sepcific
- *		recovery action is needed. If lim_uA is 0 the limit should not
- *		be changed but the detection should just be enabled/disabled as
- *		is requested.
+ *
+ *	- REGULATOR_SEVERITY_PROT should automatically shut down the regulator(s).
+ *
+ *	- REGULATOR_SEVERITY_ERR should indicate that over-current situation is
+ *		  caused by an unrecoverable error but HW does not perform
+ *		  automatic shut down.
+ *
+ *	- REGULATOR_SEVERITY_WARN should indicate situation where hardware is
+ *		  still believed to not be damaged but that a board sepcific
+ *		  recovery action is needed. If lim_uA is 0 the limit should not
+ *		  be changed but the detection should just be enabled/disabled as
+ *		  is requested.
+ *
  * @set_over_voltage_protection: Support enabling of and setting limits for over
  *	voltage situation detection. Detection can be configured for same
- *	severities as over current protection.
+ *	severities as over current protection. Units of uV.
  * @set_under_voltage_protection: Support enabling of and setting limits for
- *	under situation detection.
+ *	under voltage situation detection. Detection can be configured for same
+ *	severities as over current protection. Units of uV.
  * @set_thermal_protection: Support enabling of and setting limits for over
- *	temperature situation detection.
+ *	temperature situation detection.Detection can be configured for same
+ *	severities as over current protection. Units of degree Kelvin.
  *
  * @set_active_discharge: Set active discharge enable/disable of regulators.
  *
@@ -499,7 +505,8 @@ struct regulator_irq_data {
  *		best to shut-down regulator(s) or reboot the SOC if error
  *		handling is repeatedly failing. If fatal_cnt is given the IRQ
  *		handling is aborted if it fails for fatal_cnt times and die()
- *		callback (if populated) or BUG() is called to try to prevent
+ *		callback (if populated) is called. If die() is not populated
+ *		poweroff for the system is attempted in order to prevent any
  *		further damage.
  * @reread_ms:	The time which is waited before attempting to re-read status
  *		at the worker if IC reading fails. Immediate re-read is done
@@ -516,11 +523,12 @@ struct regulator_irq_data {
  * @data:	Driver private data pointer which will be passed as such to
  *		the renable, map_event and die callbacks in regulator_irq_data.
  * @die:	Protection callback. If IC status reading or recovery actions
- *		fail fatal_cnt times this callback or BUG() is called. This
- *		callback should implement a final protection attempt like
- *		disabling the regulator. If protection succeeded this may
- *		return 0. If anything else is returned the core assumes final
- *		protection failed and calls BUG() as a last resort.
+ *		fail fatal_cnt times this callback is called or system is
+ *		powered off. This callback should implement a final protection
+ *		attempt like disabling the regulator. If protection succeeded
+ *		die() may return 0. If anything else is returned the core
+ *		assumes final protection failed and attempts to perform a
+ *		poweroff as a last resort.
  * @map_event:	Driver callback to map IRQ status into regulator devices with
  *		events / errors. NOTE: callback MUST initialize both the
  *		errors and notifs for all rdevs which it signals having
@@ -552,7 +560,6 @@ struct regulator_irq_data {
  */
 struct regulator_irq_desc {
 	const char *name;
-	int irq_flags;
 	int fatal_cnt;
 	int reread_ms;
 	int irq_off_ms;
@@ -644,6 +651,40 @@ struct regulator_dev {
 	spinlock_t err_lock;
 };
 
+/*
+ * Convert error flags to corresponding notifications.
+ *
+ * Can be used by drivers which use the notification helpers to
+ * find out correct notification flags based on the error flags. Drivers
+ * can avoid storing both supported notification and error flags which
+ * may save few bytes.
+ */
+static inline int regulator_err2notif(int err)
+{
+	switch (err) {
+	case REGULATOR_ERROR_UNDER_VOLTAGE:
+		return REGULATOR_EVENT_UNDER_VOLTAGE;
+	case REGULATOR_ERROR_OVER_CURRENT:
+		return REGULATOR_EVENT_OVER_CURRENT;
+	case REGULATOR_ERROR_REGULATION_OUT:
+		return REGULATOR_EVENT_REGULATION_OUT;
+	case REGULATOR_ERROR_FAIL:
+		return REGULATOR_EVENT_FAIL;
+	case REGULATOR_ERROR_OVER_TEMP:
+		return REGULATOR_EVENT_OVER_TEMP;
+	case REGULATOR_ERROR_UNDER_VOLTAGE_WARN:
+		return REGULATOR_EVENT_UNDER_VOLTAGE_WARN;
+	case REGULATOR_ERROR_OVER_CURRENT_WARN:
+		return REGULATOR_EVENT_OVER_CURRENT_WARN;
+	case REGULATOR_ERROR_OVER_VOLTAGE_WARN:
+		return REGULATOR_EVENT_OVER_VOLTAGE_WARN;
+	case REGULATOR_ERROR_OVER_TEMP_WARN:
+		return REGULATOR_EVENT_OVER_TEMP_WARN;
+	}
+	return 0;
+}
+
+
 struct regulator_dev *
 regulator_register(const struct regulator_desc *regulator_desc,
 		   const struct regulator_config *config);
@@ -665,6 +706,8 @@ void *regulator_irq_helper(struct device *dev,
 			   int irq_flags, int common_errs, int *per_rdev_errs,
 			   struct regulator_dev **rdev, int rdev_amount);
 void regulator_irq_helper_cancel(void **handle);
+int regulator_irq_map_event_simple(int irq, struct regulator_irq_data *rid,
+				   unsigned long *dev_mask);
 
 void *rdev_get_drvdata(struct regulator_dev *rdev);
 struct device *rdev_get_dev(struct regulator_dev *rdev);
diff --git a/include/linux/regulator/lp872x.h b/include/linux/regulator/lp872x.h
index d780dbb8b423..b62e45aa1dd3 100644
--- a/include/linux/regulator/lp872x.h
+++ b/include/linux/regulator/lp872x.h
@@ -10,7 +10,7 @@
 
 #include <linux/regulator/machine.h>
 #include <linux/platform_device.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 
 #define LP872X_MAX_REGULATORS		9
 
@@ -40,11 +40,6 @@ enum lp872x_regulator_id {
 	LP872X_ID_MAX,
 };
 
-enum lp872x_dvs_state {
-	DVS_LOW  = GPIOF_OUT_INIT_LOW,
-	DVS_HIGH = GPIOF_OUT_INIT_HIGH,
-};
-
 enum lp872x_dvs_sel {
 	SEL_V1,
 	SEL_V2,
@@ -52,14 +47,14 @@ enum lp872x_dvs_sel {
 
 /**
  * lp872x_dvs
- * @gpio       : gpio pin number for dvs control
+ * @gpio       : gpio descriptor for dvs control
  * @vsel       : dvs selector for buck v1 or buck v2 register
  * @init_state : initial dvs pin state
  */
 struct lp872x_dvs {
-	int gpio;
+	struct gpio_desc *gpio;
 	enum lp872x_dvs_sel vsel;
-	enum lp872x_dvs_state init_state;
+	enum gpiod_flags init_state;
 };
 
 /**
@@ -78,14 +73,14 @@ struct lp872x_regulator_data {
  * @update_config     : if LP872X_GENERAL_CFG register is updated, set true
  * @regulator_data    : platform regulator id and init data
  * @dvs               : dvs data for buck voltage control
- * @enable_gpio       : gpio pin number for enable control
+ * @enable_gpio       : gpio descriptor for enable control
  */
 struct lp872x_platform_data {
 	u8 general_config;
 	bool update_config;
 	struct lp872x_regulator_data regulator_data[LP872X_MAX_REGULATORS];
 	struct lp872x_dvs *dvs;
-	int enable_gpio;
+	struct gpio_desc *enable_gpio;
 };
 
 #endif
diff --git a/include/linux/regulator/tps62360.h b/include/linux/regulator/tps62360.h
index 94a90c06f1e5..398e74a1d941 100644
--- a/include/linux/regulator/tps62360.h
+++ b/include/linux/regulator/tps62360.h
@@ -19,10 +19,6 @@
  * @en_discharge: Enable discharge the output capacitor via internal
  *                register.
  * @en_internal_pulldn: internal pull down enable or not.
- * @vsel0_gpio: Gpio number for vsel0. It should be -1 if this is tied with
- *              fixed logic.
- * @vsel1_gpio: Gpio number for vsel1. It should be -1 if this is tied with
- *              fixed logic.
  * @vsel0_def_state: Default state of vsel0. 1 if it is high else 0.
  * @vsel1_def_state: Default state of vsel1. 1 if it is high else 0.
  */
@@ -30,8 +26,6 @@ struct tps62360_regulator_platform_data {
 	struct regulator_init_data *reg_init_data;
 	bool en_discharge;
 	bool en_internal_pulldn;
-	int vsel0_gpio;
-	int vsel1_gpio;
 	int vsel0_def_state;
 	int vsel1_def_state;
 };
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 83c09ac36b13..7c943f0a2fc4 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -523,6 +523,7 @@ struct rproc_dump_segment {
  * @table_sz: size of @cached_table
  * @has_iommu: flag to indicate if remote processor is behind an MMU
  * @auto_boot: flag to indicate if remote processor should be auto-started
+ * @sysfs_read_only: flag to make remoteproc sysfs files read only
  * @dump_segments: list of segments in the firmware
  * @nb_vdev: number of vdev currently handled by rproc
  * @elf_class: firmware ELF class
@@ -562,6 +563,7 @@ struct rproc {
 	size_t table_sz;
 	bool has_iommu;
 	bool auto_boot;
+	bool sysfs_read_only;
 	struct list_head dump_segments;
 	int nb_vdev;
 	u8 elf_class;
@@ -669,10 +671,11 @@ rproc_of_resm_mem_entry_init(struct device *dev, u32 of_resm_idx, size_t len,
 			     u32 da, const char *name, ...);
 
 int rproc_boot(struct rproc *rproc);
-void rproc_shutdown(struct rproc *rproc);
+int rproc_shutdown(struct rproc *rproc);
 int rproc_detach(struct rproc *rproc);
 int rproc_set_firmware(struct rproc *rproc, const char *fw_name);
 void rproc_report_crash(struct rproc *rproc, enum rproc_crash_type type);
+void *rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem);
 void rproc_coredump_using_sections(struct rproc *rproc);
 int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size);
 int rproc_coredump_add_custom_segment(struct rproc *rproc,
@@ -684,18 +687,6 @@ int rproc_coredump_add_custom_segment(struct rproc *rproc,
 				      void *priv);
 int rproc_coredump_set_elf_info(struct rproc *rproc, u8 class, u16 machine);
 
-static inline struct rproc_vdev *vdev_to_rvdev(struct virtio_device *vdev)
-{
-	return container_of(vdev->dev.parent, struct rproc_vdev, dev);
-}
-
-static inline struct rproc *vdev_to_rproc(struct virtio_device *vdev)
-{
-	struct rproc_vdev *rvdev = vdev_to_rvdev(vdev);
-
-	return rvdev->rproc;
-}
-
 void rproc_add_subdev(struct rproc *rproc, struct rproc_subdev *subdev);
 
 void rproc_remove_subdev(struct rproc *rproc, struct rproc_subdev *subdev);
diff --git a/include/linux/reset.h b/include/linux/reset.h
index db0e6115a2f6..8a21b5756c3e 100644
--- a/include/linux/reset.h
+++ b/include/linux/reset.h
@@ -455,6 +455,26 @@ static inline struct reset_control *of_reset_control_get_exclusive(
 }
 
 /**
+ * of_reset_control_get_optional_exclusive - Lookup and obtain an optional exclusive
+ *                                           reference to a reset controller.
+ * @node: device to be reset by the controller
+ * @id: reset line name
+ *
+ * Optional variant of of_reset_control_get_exclusive(). If the requested reset
+ * is not specified in the device tree, this function returns NULL instead of
+ * an error.
+ *
+ * Returns a struct reset_control or IS_ERR() condition containing errno.
+ *
+ * Use of id names is optional.
+ */
+static inline struct reset_control *of_reset_control_get_optional_exclusive(
+				struct device_node *node, const char *id)
+{
+	return __of_reset_control_get(node, id, 0, false, true, true);
+}
+
+/**
  * of_reset_control_get_shared - Lookup and obtain a shared reference
  *                               to a reset controller.
  * @node: device to be reset by the controller
diff --git a/include/linux/resource.h b/include/linux/resource.h
index bdf491cbcab7..4fdbc0c3f315 100644
--- a/include/linux/resource.h
+++ b/include/linux/resource.h
@@ -8,7 +8,5 @@
 struct task_struct;
 
 void getrusage(struct task_struct *p, int who, struct rusage *ru);
-int do_prlimit(struct task_struct *tsk, unsigned int resource,
-		struct rlimit *new_rlim, struct rlimit *old_rlim);
 
 #endif
diff --git a/include/linux/resume_user_mode.h b/include/linux/resume_user_mode.h
new file mode 100644
index 000000000000..285189454449
--- /dev/null
+++ b/include/linux/resume_user_mode.h
@@ -0,0 +1,64 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef LINUX_RESUME_USER_MODE_H
+#define LINUX_RESUME_USER_MODE_H
+
+#include <linux/sched.h>
+#include <linux/task_work.h>
+#include <linux/memcontrol.h>
+#include <linux/blk-cgroup.h>
+
+/**
+ * set_notify_resume - cause resume_user_mode_work() to be called
+ * @task:		task that will call resume_user_mode_work()
+ *
+ * Calling this arranges that @task will call resume_user_mode_work()
+ * before returning to user mode.  If it's already running in user mode,
+ * it will enter the kernel and call resume_user_mode_work() soon.
+ * If it's blocked, it will not be woken.
+ */
+static inline void set_notify_resume(struct task_struct *task)
+{
+	if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_RESUME))
+		kick_process(task);
+}
+
+
+/**
+ * resume_user_mode_work - Perform work before returning to user mode
+ * @regs:		user-mode registers of @current task
+ *
+ * This is called when %TIF_NOTIFY_RESUME has been set.  Now we are
+ * about to return to user mode, and the user state in @regs can be
+ * inspected or adjusted.  The caller in arch code has cleared
+ * %TIF_NOTIFY_RESUME before the call.  If the flag gets set again
+ * asynchronously, this will be called again before we return to
+ * user mode.
+ *
+ * Called without locks.
+ */
+static inline void resume_user_mode_work(struct pt_regs *regs)
+{
+	clear_thread_flag(TIF_NOTIFY_RESUME);
+	/*
+	 * This barrier pairs with task_work_add()->set_notify_resume() after
+	 * hlist_add_head(task->task_works);
+	 */
+	smp_mb__after_atomic();
+	if (unlikely(task_work_pending(current)))
+		task_work_run();
+
+#ifdef CONFIG_KEYS_REQUEST_CACHE
+	if (unlikely(current->cached_requested_key)) {
+		key_put(current->cached_requested_key);
+		current->cached_requested_key = NULL;
+	}
+#endif
+
+	mem_cgroup_handle_over_high();
+	blkcg_maybe_throttle_current();
+
+	rseq_handle_notify_resume(NULL, regs);
+}
+
+#endif /* LINUX_RESUME_USER_MODE_H */
diff --git a/include/linux/rethook.h b/include/linux/rethook.h
new file mode 100644
index 000000000000..c8ac1e5afcd1
--- /dev/null
+++ b/include/linux/rethook.h
@@ -0,0 +1,100 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Return hooking with list-based shadow stack.
+ */
+#ifndef _LINUX_RETHOOK_H
+#define _LINUX_RETHOOK_H
+
+#include <linux/compiler.h>
+#include <linux/freelist.h>
+#include <linux/kallsyms.h>
+#include <linux/llist.h>
+#include <linux/rcupdate.h>
+#include <linux/refcount.h>
+
+struct rethook_node;
+
+typedef void (*rethook_handler_t) (struct rethook_node *, void *, struct pt_regs *);
+
+/**
+ * struct rethook - The rethook management data structure.
+ * @data: The user-defined data storage.
+ * @handler: The user-defined return hook handler.
+ * @pool: The pool of struct rethook_node.
+ * @ref: The reference counter.
+ * @rcu: The rcu_head for deferred freeing.
+ *
+ * Don't embed to another data structure, because this is a self-destructive
+ * data structure when all rethook_node are freed.
+ */
+struct rethook {
+	void			*data;
+	rethook_handler_t	handler;
+	struct freelist_head	pool;
+	refcount_t		ref;
+	struct rcu_head		rcu;
+};
+
+/**
+ * struct rethook_node - The rethook shadow-stack entry node.
+ * @freelist: The freelist, linked to struct rethook::pool.
+ * @rcu: The rcu_head for deferred freeing.
+ * @llist: The llist, linked to a struct task_struct::rethooks.
+ * @rethook: The pointer to the struct rethook.
+ * @ret_addr: The storage for the real return address.
+ * @frame: The storage for the frame pointer.
+ *
+ * You can embed this to your extended data structure to store any data
+ * on each entry of the shadow stack.
+ */
+struct rethook_node {
+	union {
+		struct freelist_node freelist;
+		struct rcu_head      rcu;
+	};
+	struct llist_node	llist;
+	struct rethook		*rethook;
+	unsigned long		ret_addr;
+	unsigned long		frame;
+};
+
+struct rethook *rethook_alloc(void *data, rethook_handler_t handler);
+void rethook_free(struct rethook *rh);
+void rethook_add_node(struct rethook *rh, struct rethook_node *node);
+struct rethook_node *rethook_try_get(struct rethook *rh);
+void rethook_recycle(struct rethook_node *node);
+void rethook_hook(struct rethook_node *node, struct pt_regs *regs, bool mcount);
+unsigned long rethook_find_ret_addr(struct task_struct *tsk, unsigned long frame,
+				    struct llist_node **cur);
+
+/* Arch dependent code must implement arch_* and trampoline code */
+void arch_rethook_prepare(struct rethook_node *node, struct pt_regs *regs, bool mcount);
+void arch_rethook_trampoline(void);
+
+/**
+ * is_rethook_trampoline() - Check whether the address is rethook trampoline
+ * @addr: The address to be checked
+ *
+ * Return true if the @addr is the rethook trampoline address.
+ */
+static inline bool is_rethook_trampoline(unsigned long addr)
+{
+	return addr == (unsigned long)dereference_symbol_descriptor(arch_rethook_trampoline);
+}
+
+/* If the architecture needs to fixup the return address, implement it. */
+void arch_rethook_fixup_return(struct pt_regs *regs,
+			       unsigned long correct_ret_addr);
+
+/* Generic trampoline handler, arch code must prepare asm stub */
+unsigned long rethook_trampoline_handler(struct pt_regs *regs,
+					 unsigned long frame);
+
+#ifdef CONFIG_RETHOOK
+void rethook_flush_task(struct task_struct *tk);
+#else
+#define rethook_flush_task(tsk)	do { } while (0)
+#endif
+
+#endif
+
diff --git a/include/linux/rfkill.h b/include/linux/rfkill.h
index 231e06b74b50..373003ace639 100644
--- a/include/linux/rfkill.h
+++ b/include/linux/rfkill.h
@@ -230,6 +230,13 @@ void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw);
 bool rfkill_blocked(struct rfkill *rfkill);
 
 /**
+ * rfkill_soft_blocked - Query soft rfkill block state
+ *
+ * @rfkill: rfkill struct to query
+ */
+bool rfkill_soft_blocked(struct rfkill *rfkill);
+
+/**
  * rfkill_find_type - Helper for finding rfkill type by name
  * @name: the name of the type
  *
@@ -301,6 +308,11 @@ static inline bool rfkill_blocked(struct rfkill *rfkill)
 	return false;
 }
 
+static inline bool rfkill_soft_blocked(struct rfkill *rfkill)
+{
+	return false;
+}
+
 static inline enum rfkill_type rfkill_find_type(const char *name)
 {
 	return RFKILL_TYPE_ALL;
diff --git a/include/linux/rio_ids.h b/include/linux/rio_ids.h
index 4846f72759b2..c7e2f21dd5c1 100644
--- a/include/linux/rio_ids.h
+++ b/include/linux/rio_ids.h
@@ -9,18 +9,6 @@
 #ifndef LINUX_RIO_IDS_H
 #define LINUX_RIO_IDS_H
 
-#define RIO_VID_FREESCALE		0x0002
-#define RIO_DID_MPC8560			0x0003
-
-#define RIO_VID_TUNDRA			0x000d
-#define RIO_DID_TSI500			0x0500
-#define RIO_DID_TSI568			0x0568
-#define RIO_DID_TSI572			0x0572
-#define RIO_DID_TSI574			0x0574
-#define RIO_DID_TSI576			0x0578 /* Same ID as Tsi578 */
-#define RIO_DID_TSI577			0x0577
-#define RIO_DID_TSI578			0x0578
-
 #define RIO_VID_IDT			0x0038
 #define RIO_DID_IDT70K200		0x0310
 #define RIO_DID_IDTCPS8			0x035c
@@ -33,7 +21,6 @@
 #define RIO_DID_IDTCPS1616		0x0379
 #define RIO_DID_IDTVPS1616		0x0377
 #define RIO_DID_IDTSPS1616		0x0378
-#define RIO_DID_TSI721			0x80ab
 #define RIO_DID_IDTRXS1632		0x80e5
 #define RIO_DID_IDTRXS2448		0x80e6
 
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index c976cc6de257..17230c458341 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -11,6 +11,7 @@
 #include <linux/rwsem.h>
 #include <linux/memcontrol.h>
 #include <linux/highmem.h>
+#include <linux/pagemap.h>
 
 /*
  * The anon_vma heads a list of private "related" vmas, to scan if
@@ -167,18 +168,19 @@ struct anon_vma *page_get_anon_vma(struct page *page);
  */
 void page_move_anon_rmap(struct page *, struct vm_area_struct *);
 void page_add_anon_rmap(struct page *, struct vm_area_struct *,
-		unsigned long, bool);
+		unsigned long address, bool compound);
 void do_page_add_anon_rmap(struct page *, struct vm_area_struct *,
-			   unsigned long, int);
+		unsigned long address, int flags);
 void page_add_new_anon_rmap(struct page *, struct vm_area_struct *,
-		unsigned long, bool);
-void page_add_file_rmap(struct page *, bool);
-void page_remove_rmap(struct page *, bool);
-
+		unsigned long address, bool compound);
+void page_add_file_rmap(struct page *, struct vm_area_struct *,
+		bool compound);
+void page_remove_rmap(struct page *, struct vm_area_struct *,
+		bool compound);
 void hugepage_add_anon_rmap(struct page *, struct vm_area_struct *,
-			    unsigned long);
+		unsigned long address);
 void hugepage_add_new_anon_rmap(struct page *, struct vm_area_struct *,
-				unsigned long);
+		unsigned long address);
 
 static inline void page_dup_rmap(struct page *page, bool compound)
 {
@@ -188,11 +190,11 @@ static inline void page_dup_rmap(struct page *page, bool compound)
 /*
  * Called from mm/vmscan.c to handle paging out
  */
-int page_referenced(struct page *, int is_locked,
+int folio_referenced(struct folio *, int is_locked,
 			struct mem_cgroup *memcg, unsigned long *vm_flags);
 
-void try_to_migrate(struct page *page, enum ttu_flags flags);
-void try_to_unmap(struct page *, enum ttu_flags flags);
+void try_to_migrate(struct folio *folio, enum ttu_flags flags);
+void try_to_unmap(struct folio *, enum ttu_flags flags);
 
 int make_device_exclusive_range(struct mm_struct *mm, unsigned long start,
 				unsigned long end, struct page **pages,
@@ -200,11 +202,13 @@ int make_device_exclusive_range(struct mm_struct *mm, unsigned long start,
 
 /* Avoid racy checks */
 #define PVMW_SYNC		(1 << 0)
-/* Look for migarion entries rather than present PTEs */
+/* Look for migration entries rather than present PTEs */
 #define PVMW_MIGRATION		(1 << 1)
 
 struct page_vma_mapped_walk {
-	struct page *page;
+	unsigned long pfn;
+	unsigned long nr_pages;
+	pgoff_t pgoff;
 	struct vm_area_struct *vma;
 	unsigned long address;
 	pmd_t *pmd;
@@ -213,10 +217,30 @@ struct page_vma_mapped_walk {
 	unsigned int flags;
 };
 
+#define DEFINE_PAGE_VMA_WALK(name, _page, _vma, _address, _flags)	\
+	struct page_vma_mapped_walk name = {				\
+		.pfn = page_to_pfn(_page),				\
+		.nr_pages = compound_nr(page),				\
+		.pgoff = page_to_pgoff(page),				\
+		.vma = _vma,						\
+		.address = _address,					\
+		.flags = _flags,					\
+	}
+
+#define DEFINE_FOLIO_VMA_WALK(name, _folio, _vma, _address, _flags)	\
+	struct page_vma_mapped_walk name = {				\
+		.pfn = folio_pfn(_folio),				\
+		.nr_pages = folio_nr_pages(_folio),			\
+		.pgoff = folio_pgoff(_folio),				\
+		.vma = _vma,						\
+		.address = _address,					\
+		.flags = _flags,					\
+	}
+
 static inline void page_vma_mapped_walk_done(struct page_vma_mapped_walk *pvmw)
 {
 	/* HugeTLB pte is set to the relevant page table entry without pte_mapped. */
-	if (pvmw->pte && !PageHuge(pvmw->page))
+	if (pvmw->pte && !is_vm_hugetlb_page(pvmw->vma))
 		pte_unmap(pvmw->pte);
 	if (pvmw->ptl)
 		spin_unlock(pvmw->ptl);
@@ -235,20 +259,14 @@ unsigned long page_address_in_vma(struct page *, struct vm_area_struct *);
  *
  * returns the number of cleaned PTEs.
  */
-int page_mkclean(struct page *);
-
-/*
- * called in munlock()/munmap() path to check for other vmas holding
- * the page mlocked.
- */
-void page_mlock(struct page *page);
+int folio_mkclean(struct folio *);
 
-void remove_migration_ptes(struct page *old, struct page *new, bool locked);
+void remove_migration_ptes(struct folio *src, struct folio *dst, bool locked);
 
 /*
  * Called by memory-failure.c to kill processes.
  */
-struct anon_vma *page_lock_anon_vma_read(struct page *page);
+struct anon_vma *folio_lock_anon_vma_read(struct folio *folio);
 void page_unlock_anon_vma_read(struct anon_vma *anon_vma);
 int page_mapped_in_vma(struct page *page, struct vm_area_struct *vma);
 
@@ -267,15 +285,15 @@ struct rmap_walk_control {
 	 * Return false if page table scanning in rmap_walk should be stopped.
 	 * Otherwise, return true.
 	 */
-	bool (*rmap_one)(struct page *page, struct vm_area_struct *vma,
+	bool (*rmap_one)(struct folio *folio, struct vm_area_struct *vma,
 					unsigned long addr, void *arg);
-	int (*done)(struct page *page);
-	struct anon_vma *(*anon_lock)(struct page *page);
+	int (*done)(struct folio *folio);
+	struct anon_vma *(*anon_lock)(struct folio *folio);
 	bool (*invalid_vma)(struct vm_area_struct *vma, void *arg);
 };
 
-void rmap_walk(struct page *page, struct rmap_walk_control *rwc);
-void rmap_walk_locked(struct page *page, struct rmap_walk_control *rwc);
+void rmap_walk(struct folio *folio, const struct rmap_walk_control *rwc);
+void rmap_walk_locked(struct folio *folio, const struct rmap_walk_control *rwc);
 
 #else	/* !CONFIG_MMU */
 
@@ -283,7 +301,7 @@ void rmap_walk_locked(struct page *page, struct rmap_walk_control *rwc);
 #define anon_vma_prepare(vma)	(0)
 #define anon_vma_link(vma)	do {} while (0)
 
-static inline int page_referenced(struct page *page, int is_locked,
+static inline int folio_referenced(struct folio *folio, int is_locked,
 				  struct mem_cgroup *memcg,
 				  unsigned long *vm_flags)
 {
@@ -291,16 +309,18 @@ static inline int page_referenced(struct page *page, int is_locked,
 	return 0;
 }
 
-static inline void try_to_unmap(struct page *page, enum ttu_flags flags)
+static inline void try_to_unmap(struct folio *folio, enum ttu_flags flags)
 {
 }
 
-static inline int page_mkclean(struct page *page)
+static inline int folio_mkclean(struct folio *folio)
 {
 	return 0;
 }
-
-
 #endif	/* CONFIG_MMU */
 
+static inline int page_mkclean(struct page *page)
+{
+	return folio_mkclean(page_folio(page));
+}
 #endif	/* _LINUX_RMAP_H */
diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h
index d97dcd049f18..02fa9116cd60 100644
--- a/include/linux/rpmsg.h
+++ b/include/linux/rpmsg.h
@@ -186,6 +186,8 @@ int rpmsg_trysend_offchannel(struct rpmsg_endpoint *ept, u32 src, u32 dst,
 __poll_t rpmsg_poll(struct rpmsg_endpoint *ept, struct file *filp,
 			poll_table *wait);
 
+ssize_t rpmsg_get_mtu(struct rpmsg_endpoint *ept);
+
 #else
 
 static inline int rpmsg_register_device(struct rpmsg_device *rpdev)
@@ -231,7 +233,7 @@ static inline struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_device *rpdev
 	/* This shouldn't be possible */
 	WARN_ON(1);
 
-	return ERR_PTR(-ENXIO);
+	return NULL;
 }
 
 static inline int rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len)
@@ -296,6 +298,14 @@ static inline __poll_t rpmsg_poll(struct rpmsg_endpoint *ept,
 	return 0;
 }
 
+static inline ssize_t rpmsg_get_mtu(struct rpmsg_endpoint *ept)
+{
+	/* This shouldn't be possible */
+	WARN_ON(1);
+
+	return -ENXIO;
+}
+
 #endif /* IS_ENABLED(CONFIG_RPMSG) */
 
 /* use a macro to avoid include chaining to get THIS_MODULE */
diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index bd611e26291d..1fd9c6a21ebe 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -66,6 +66,8 @@ struct rtc_class_ops {
 	int (*alarm_irq_enable)(struct device *, unsigned int enabled);
 	int (*read_offset)(struct device *, long *offset);
 	int (*set_offset)(struct device *, long offset);
+	int (*param_get)(struct device *, struct rtc_param *param);
+	int (*param_set)(struct device *, struct rtc_param *param);
 };
 
 struct rtc_device;
@@ -80,6 +82,7 @@ struct rtc_timer {
 
 /* flags */
 #define RTC_DEV_BUSY 0
+#define RTC_NO_CDEV  1
 
 struct rtc_device {
 	struct device dev;
@@ -107,8 +110,6 @@ struct rtc_device {
 	struct hrtimer pie_timer; /* sub second exp, so needs hrtimer */
 	int pie_enabled;
 	struct work_struct irqwork;
-	/* Some hardware can't support UIE mode */
-	int uie_unsupported;
 
 	/*
 	 * This offset specifies the update timing of the RTC.
diff --git a/include/linux/rtc/ds1685.h b/include/linux/rtc/ds1685.h
index 67ee9d20cc5a..5a41c3bbcbe3 100644
--- a/include/linux/rtc/ds1685.h
+++ b/include/linux/rtc/ds1685.h
@@ -46,7 +46,6 @@ struct ds1685_priv {
 	u32 regstep;
 	int irq_num;
 	bool bcd_mode;
-	bool no_irq;
 	u8 (*read)(struct ds1685_priv *, int);
 	void (*write)(struct ds1685_priv *, int, u8);
 	void (*prepare_poweroff)(void);
diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 9deedfeec2b1..7d049883a08a 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -99,13 +99,22 @@ extern void __rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 extern void rt_mutex_lock_nested(struct rt_mutex *lock, unsigned int subclass);
+extern void _rt_mutex_lock_nest_lock(struct rt_mutex *lock, struct lockdep_map *nest_lock);
 #define rt_mutex_lock(lock) rt_mutex_lock_nested(lock, 0)
+#define rt_mutex_lock_nest_lock(lock, nest_lock)			\
+	do {								\
+		typecheck(struct lockdep_map *, &(nest_lock)->dep_map);	\
+		_rt_mutex_lock_nest_lock(lock, &(nest_lock)->dep_map);	\
+	} while (0)
+
 #else
 extern void rt_mutex_lock(struct rt_mutex *lock);
 #define rt_mutex_lock_nested(lock, subclass) rt_mutex_lock(lock)
+#define rt_mutex_lock_nest_lock(lock, nest_lock) rt_mutex_lock(lock)
 #endif
 
 extern int rt_mutex_lock_interruptible(struct rt_mutex *lock);
+extern int rt_mutex_lock_killable(struct rt_mutex *lock);
 extern int rt_mutex_trylock(struct rt_mutex *lock);
 
 extern void rt_mutex_unlock(struct rt_mutex *lock);
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index bb9cb84114c1..7f970b16da3a 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -134,4 +134,7 @@ extern int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
 				   int (*vlan_fill)(struct sk_buff *skb,
 						    struct net_device *dev,
 						    u32 filter_mask));
+
+extern void rtnl_offload_xstats_notify(struct net_device *dev);
+
 #endif	/* __LINUX_RTNETLINK_H */
diff --git a/include/linux/rtsx_pci.h b/include/linux/rtsx_pci.h
index 4ab7bfc675f1..3d780b44e678 100644
--- a/include/linux/rtsx_pci.h
+++ b/include/linux/rtsx_pci.h
@@ -1095,7 +1095,7 @@ struct pcr_ops {
 	unsigned int	(*cd_deglitch)(struct rtsx_pcr *pcr);
 	int		(*conv_clk_and_div_n)(int clk, int dir);
 	void		(*fetch_vendor_settings)(struct rtsx_pcr *pcr);
-	void		(*force_power_down)(struct rtsx_pcr *pcr, u8 pm_state);
+	void		(*force_power_down)(struct rtsx_pcr *pcr, u8 pm_state, bool runtime);
 	void		(*stop_cmd)(struct rtsx_pcr *pcr);
 
 	void (*set_aspm)(struct rtsx_pcr *pcr, bool enable);
@@ -1201,8 +1201,6 @@ struct rtsx_pcr {
 	unsigned int			card_exist;
 
 	struct delayed_work		carddet_work;
-	struct delayed_work		idle_work;
-	struct delayed_work		rtd3_work;
 
 	spinlock_t			lock;
 	struct mutex			pcr_mutex;
@@ -1212,7 +1210,6 @@ struct rtsx_pcr {
 	unsigned int			cur_clock;
 	bool				remove_pci;
 	bool				msi_en;
-	bool				is_runtime_suspended;
 
 #define EXTRA_CAPS_SD_SDR50		(1 << 0)
 #define EXTRA_CAPS_SD_SDR104		(1 << 1)
diff --git a/include/linux/rwlock.h b/include/linux/rwlock.h
index 7ce9a51ae5c0..8f416c5e929e 100644
--- a/include/linux/rwlock.h
+++ b/include/linux/rwlock.h
@@ -30,31 +30,16 @@ do {								\
 
 #ifdef CONFIG_DEBUG_SPINLOCK
  extern void do_raw_read_lock(rwlock_t *lock) __acquires(lock);
-#define do_raw_read_lock_flags(lock, flags) do_raw_read_lock(lock)
  extern int do_raw_read_trylock(rwlock_t *lock);
  extern void do_raw_read_unlock(rwlock_t *lock) __releases(lock);
  extern void do_raw_write_lock(rwlock_t *lock) __acquires(lock);
-#define do_raw_write_lock_flags(lock, flags) do_raw_write_lock(lock)
  extern int do_raw_write_trylock(rwlock_t *lock);
  extern void do_raw_write_unlock(rwlock_t *lock) __releases(lock);
 #else
-
-#ifndef arch_read_lock_flags
-# define arch_read_lock_flags(lock, flags)	arch_read_lock(lock)
-#endif
-
-#ifndef arch_write_lock_flags
-# define arch_write_lock_flags(lock, flags)	arch_write_lock(lock)
-#endif
-
 # define do_raw_read_lock(rwlock)	do {__acquire(lock); arch_read_lock(&(rwlock)->raw_lock); } while (0)
-# define do_raw_read_lock_flags(lock, flags) \
-		do {__acquire(lock); arch_read_lock_flags(&(lock)->raw_lock, *(flags)); } while (0)
 # define do_raw_read_trylock(rwlock)	arch_read_trylock(&(rwlock)->raw_lock)
 # define do_raw_read_unlock(rwlock)	do {arch_read_unlock(&(rwlock)->raw_lock); __release(lock); } while (0)
 # define do_raw_write_lock(rwlock)	do {__acquire(lock); arch_write_lock(&(rwlock)->raw_lock); } while (0)
-# define do_raw_write_lock_flags(lock, flags) \
-		do {__acquire(lock); arch_write_lock_flags(&(lock)->raw_lock, *(flags)); } while (0)
 # define do_raw_write_trylock(rwlock)	arch_write_trylock(&(rwlock)->raw_lock)
 # define do_raw_write_unlock(rwlock)	do {arch_write_unlock(&(rwlock)->raw_lock); __release(lock); } while (0)
 #endif
@@ -70,6 +55,12 @@ do {								\
 #define write_lock(lock)	_raw_write_lock(lock)
 #define read_lock(lock)		_raw_read_lock(lock)
 
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+#define write_lock_nested(lock, subclass)	_raw_write_lock_nested(lock, subclass)
+#else
+#define write_lock_nested(lock, subclass)	_raw_write_lock(lock)
+#endif
+
 #if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
 
 #define read_lock_irqsave(lock, flags)			\
diff --git a/include/linux/rwlock_api_smp.h b/include/linux/rwlock_api_smp.h
index abfb53ab11be..dceb0a59b692 100644
--- a/include/linux/rwlock_api_smp.h
+++ b/include/linux/rwlock_api_smp.h
@@ -17,6 +17,7 @@
 
 void __lockfunc _raw_read_lock(rwlock_t *lock)		__acquires(lock);
 void __lockfunc _raw_write_lock(rwlock_t *lock)		__acquires(lock);
+void __lockfunc _raw_write_lock_nested(rwlock_t *lock, int subclass)	__acquires(lock);
 void __lockfunc _raw_read_lock_bh(rwlock_t *lock)	__acquires(lock);
 void __lockfunc _raw_write_lock_bh(rwlock_t *lock)	__acquires(lock);
 void __lockfunc _raw_read_lock_irq(rwlock_t *lock)	__acquires(lock);
@@ -157,8 +158,7 @@ static inline unsigned long __raw_read_lock_irqsave(rwlock_t *lock)
 	local_irq_save(flags);
 	preempt_disable();
 	rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
-	LOCK_CONTENDED_FLAGS(lock, do_raw_read_trylock, do_raw_read_lock,
-			     do_raw_read_lock_flags, &flags);
+	LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock);
 	return flags;
 }
 
@@ -184,8 +184,7 @@ static inline unsigned long __raw_write_lock_irqsave(rwlock_t *lock)
 	local_irq_save(flags);
 	preempt_disable();
 	rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-	LOCK_CONTENDED_FLAGS(lock, do_raw_write_trylock, do_raw_write_lock,
-			     do_raw_write_lock_flags, &flags);
+	LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock);
 	return flags;
 }
 
@@ -211,6 +210,13 @@ static inline void __raw_write_lock(rwlock_t *lock)
 	LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock);
 }
 
+static inline void __raw_write_lock_nested(rwlock_t *lock, int subclass)
+{
+	preempt_disable();
+	rwlock_acquire(&lock->dep_map, subclass, 0, _RET_IP_);
+	LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock);
+}
+
 #endif /* !CONFIG_GENERIC_LOCKBREAK || CONFIG_DEBUG_LOCK_ALLOC */
 
 static inline void __raw_write_unlock(rwlock_t *lock)
diff --git a/include/linux/rwlock_rt.h b/include/linux/rwlock_rt.h
index 49c1f3842ed5..8544ff05e594 100644
--- a/include/linux/rwlock_rt.h
+++ b/include/linux/rwlock_rt.h
@@ -28,6 +28,7 @@ extern void rt_read_lock(rwlock_t *rwlock);
 extern int rt_read_trylock(rwlock_t *rwlock);
 extern void rt_read_unlock(rwlock_t *rwlock);
 extern void rt_write_lock(rwlock_t *rwlock);
+extern void rt_write_lock_nested(rwlock_t *rwlock, int subclass);
 extern int rt_write_trylock(rwlock_t *rwlock);
 extern void rt_write_unlock(rwlock_t *rwlock);
 
@@ -83,6 +84,15 @@ static __always_inline void write_lock(rwlock_t *rwlock)
 	rt_write_lock(rwlock);
 }
 
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+static __always_inline void write_lock_nested(rwlock_t *rwlock, int subclass)
+{
+	rt_write_lock_nested(rwlock, subclass);
+}
+#else
+#define write_lock_nested(lock, subclass)	rt_write_lock(((void)(subclass), (lock)))
+#endif
+
 static __always_inline void write_lock_bh(rwlock_t *rwlock)
 {
 	local_bh_disable();
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index 352c6127cb90..efa5c324369a 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -11,7 +11,6 @@
 #include <linux/linkage.h>
 
 #include <linux/types.h>
-#include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/atomic.h>
@@ -231,7 +230,7 @@ extern void _down_write_nest_lock(struct rw_semaphore *sem, struct lockdep_map *
 do {								\
 	typecheck(struct lockdep_map *, &(nest_lock)->dep_map);	\
 	_down_write_nest_lock(sem, &(nest_lock)->dep_map);	\
-} while (0);
+} while (0)
 
 /*
  * Take/release a lock when not the owner will release it.
diff --git a/include/linux/sbitmap.h b/include/linux/sbitmap.h
index 2713e689ad66..8f5a86e210b9 100644
--- a/include/linux/sbitmap.h
+++ b/include/linux/sbitmap.h
@@ -9,8 +9,17 @@
 #ifndef __LINUX_SCALE_BITMAP_H
 #define __LINUX_SCALE_BITMAP_H
 
-#include <linux/kernel.h>
+#include <linux/atomic.h>
+#include <linux/bitops.h>
+#include <linux/cache.h>
+#include <linux/list.h>
+#include <linux/log2.h>
+#include <linux/minmax.h>
+#include <linux/percpu.h>
 #include <linux/slab.h>
+#include <linux/smp.h>
+#include <linux/types.h>
+#include <linux/wait.h>
 
 struct seq_file;
 
@@ -19,14 +28,9 @@ struct seq_file;
  */
 struct sbitmap_word {
 	/**
-	 * @depth: Number of bits being used in @word/@cleared
-	 */
-	unsigned long depth;
-
-	/**
 	 * @word: word holding free bits
 	 */
-	unsigned long word ____cacheline_aligned_in_smp;
+	unsigned long word;
 
 	/**
 	 * @cleared: word holding cleared bits
@@ -131,7 +135,7 @@ struct sbitmap_queue {
 
 	/**
 	 * @min_shallow_depth: The minimum shallow depth which may be passed to
-	 * sbitmap_queue_get_shallow() or __sbitmap_queue_get_shallow().
+	 * sbitmap_queue_get_shallow()
 	 */
 	unsigned int min_shallow_depth;
 };
@@ -155,6 +159,14 @@ struct sbitmap_queue {
 int sbitmap_init_node(struct sbitmap *sb, unsigned int depth, int shift,
 		      gfp_t flags, int node, bool round_robin, bool alloc_hint);
 
+/* sbitmap internal helper */
+static inline unsigned int __map_depth(const struct sbitmap *sb, int index)
+{
+	if (index == sb->map_nr - 1)
+		return sb->depth - (index << sb->shift);
+	return 1U << sb->shift;
+}
+
 /**
  * sbitmap_free() - Free memory used by a &struct sbitmap.
  * @sb: Bitmap to free.
@@ -162,7 +174,7 @@ int sbitmap_init_node(struct sbitmap *sb, unsigned int depth, int shift,
 static inline void sbitmap_free(struct sbitmap *sb)
 {
 	free_percpu(sb->alloc_hint);
-	kfree(sb->map);
+	kvfree(sb->map);
 	sb->map = NULL;
 }
 
@@ -242,7 +254,7 @@ static inline void __sbitmap_for_each_set(struct sbitmap *sb,
 	while (scanned < sb->depth) {
 		unsigned long word;
 		unsigned int depth = min_t(unsigned int,
-					   sb->map[index].depth - nr,
+					   __map_depth(sb, index) - nr,
 					   sb->depth - scanned);
 
 		scanned += depth;
@@ -407,6 +419,17 @@ static inline void sbitmap_queue_free(struct sbitmap_queue *sbq)
 }
 
 /**
+ * sbitmap_queue_recalculate_wake_batch() - Recalculate wake batch
+ * @sbq: Bitmap queue to recalculate wake batch.
+ * @users: Number of shares.
+ *
+ * Like sbitmap_queue_update_wake_batch(), this will calculate wake batch
+ * by depth. This interface is for HCTX shared tags or queue shared tags.
+ */
+void sbitmap_queue_recalculate_wake_batch(struct sbitmap_queue *sbq,
+					    unsigned int users);
+
+/**
  * sbitmap_queue_resize() - Resize a &struct sbitmap_queue.
  * @sbq: Bitmap queue to resize.
  * @depth: New number of bits to resize to.
@@ -427,7 +450,20 @@ void sbitmap_queue_resize(struct sbitmap_queue *sbq, unsigned int depth);
 int __sbitmap_queue_get(struct sbitmap_queue *sbq);
 
 /**
- * __sbitmap_queue_get_shallow() - Try to allocate a free bit from a &struct
+ * __sbitmap_queue_get_batch() - Try to allocate a batch of free bits
+ * @sbq: Bitmap queue to allocate from.
+ * @nr_tags: number of tags requested
+ * @offset: offset to add to returned bits
+ *
+ * Return: Mask of allocated tags, 0 if none are found. Each tag allocated is
+ * a bit in the mask returned, and the caller must add @offset to the value to
+ * get the absolute tag value.
+ */
+unsigned long __sbitmap_queue_get_batch(struct sbitmap_queue *sbq, int nr_tags,
+					unsigned int *offset);
+
+/**
+ * sbitmap_queue_get_shallow() - Try to allocate a free bit from a &struct
  * sbitmap_queue, limiting the depth used from each word, with preemption
  * already disabled.
  * @sbq: Bitmap queue to allocate from.
@@ -439,8 +475,8 @@ int __sbitmap_queue_get(struct sbitmap_queue *sbq);
  *
  * Return: Non-negative allocated bit number if successful, -1 otherwise.
  */
-int __sbitmap_queue_get_shallow(struct sbitmap_queue *sbq,
-				unsigned int shallow_depth);
+int sbitmap_queue_get_shallow(struct sbitmap_queue *sbq,
+			      unsigned int shallow_depth);
 
 /**
  * sbitmap_queue_get() - Try to allocate a free bit from a &struct
@@ -463,32 +499,6 @@ static inline int sbitmap_queue_get(struct sbitmap_queue *sbq,
 }
 
 /**
- * sbitmap_queue_get_shallow() - Try to allocate a free bit from a &struct
- * sbitmap_queue, limiting the depth used from each word.
- * @sbq: Bitmap queue to allocate from.
- * @cpu: Output parameter; will contain the CPU we ran on (e.g., to be passed to
- *       sbitmap_queue_clear()).
- * @shallow_depth: The maximum number of bits to allocate from a single word.
- * See sbitmap_get_shallow().
- *
- * If you call this, make sure to call sbitmap_queue_min_shallow_depth() after
- * initializing @sbq.
- *
- * Return: Non-negative allocated bit number if successful, -1 otherwise.
- */
-static inline int sbitmap_queue_get_shallow(struct sbitmap_queue *sbq,
-					    unsigned int *cpu,
-					    unsigned int shallow_depth)
-{
-	int nr;
-
-	*cpu = get_cpu();
-	nr = __sbitmap_queue_get_shallow(sbq, shallow_depth);
-	put_cpu();
-	return nr;
-}
-
-/**
  * sbitmap_queue_min_shallow_depth() - Inform a &struct sbitmap_queue of the
  * minimum shallow depth that will be used.
  * @sbq: Bitmap queue in question.
@@ -515,6 +525,17 @@ void sbitmap_queue_min_shallow_depth(struct sbitmap_queue *sbq,
 void sbitmap_queue_clear(struct sbitmap_queue *sbq, unsigned int nr,
 			 unsigned int cpu);
 
+/**
+ * sbitmap_queue_clear_batch() - Free a batch of allocated bits
+ * &struct sbitmap_queue.
+ * @sbq: Bitmap to free from.
+ * @offset: offset for each tag in array
+ * @tags: array of tags
+ * @nr_tags: number of tags in array
+ */
+void sbitmap_queue_clear_batch(struct sbitmap_queue *sbq, int offset,
+				int *tags, int nr_tags);
+
 static inline int sbq_index_inc(int index)
 {
 	return (index + 1) & (SBQ_WAIT_QUEUES - 1);
diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h
index 266754a55327..7ff9d6386c12 100644
--- a/include/linux/scatterlist.h
+++ b/include/linux/scatterlist.h
@@ -69,10 +69,27 @@ struct sg_append_table {
  * a valid sg entry, or whether it points to the start of a new scatterlist.
  * Those low bits are there for everyone! (thanks mason :-)
  */
-#define sg_is_chain(sg)		((sg)->page_link & SG_CHAIN)
-#define sg_is_last(sg)		((sg)->page_link & SG_END)
-#define sg_chain_ptr(sg)	\
-	((struct scatterlist *) ((sg)->page_link & ~(SG_CHAIN | SG_END)))
+#define SG_PAGE_LINK_MASK (SG_CHAIN | SG_END)
+
+static inline unsigned int __sg_flags(struct scatterlist *sg)
+{
+	return sg->page_link & SG_PAGE_LINK_MASK;
+}
+
+static inline struct scatterlist *sg_chain_ptr(struct scatterlist *sg)
+{
+	return (struct scatterlist *)(sg->page_link & ~SG_PAGE_LINK_MASK);
+}
+
+static inline bool sg_is_chain(struct scatterlist *sg)
+{
+	return __sg_flags(sg) & SG_CHAIN;
+}
+
+static inline bool sg_is_last(struct scatterlist *sg)
+{
+	return __sg_flags(sg) & SG_END;
+}
 
 /**
  * sg_assign_page - Assign a given page to an SG entry
@@ -92,7 +109,7 @@ static inline void sg_assign_page(struct scatterlist *sg, struct page *page)
 	 * In order for the low bit stealing approach to work, pages
 	 * must be aligned at a 32-bit boundary as a minimum.
 	 */
-	BUG_ON((unsigned long) page & (SG_CHAIN | SG_END));
+	BUG_ON((unsigned long)page & SG_PAGE_LINK_MASK);
 #ifdef CONFIG_DEBUG_SG
 	BUG_ON(sg_is_chain(sg));
 #endif
@@ -126,7 +143,7 @@ static inline struct page *sg_page(struct scatterlist *sg)
 #ifdef CONFIG_DEBUG_SG
 	BUG_ON(sg_is_chain(sg));
 #endif
-	return (struct page *)((sg)->page_link & ~(SG_CHAIN | SG_END));
+	return (struct page *)((sg)->page_link & ~SG_PAGE_LINK_MASK);
 }
 
 /**
diff --git a/include/linux/sched.h b/include/linux/sched.h
index c1a927ddec64..a8911b1f35aa 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -274,8 +274,13 @@ struct task_group;
 
 #define get_current_state()	READ_ONCE(current->__state)
 
-/* Task command name length: */
-#define TASK_COMM_LEN			16
+/*
+ * Define the task command name length as enum, then it can be visible to
+ * BPF programs.
+ */
+enum {
+	TASK_COMM_LEN = 16,
+};
 
 extern void scheduler_tick(void);
 
@@ -503,6 +508,8 @@ struct sched_statistics {
 
 	u64				block_start;
 	u64				block_max;
+	s64				sum_block_runtime;
+
 	u64				exec_max;
 	u64				slice_max;
 
@@ -521,8 +528,12 @@ struct sched_statistics {
 	u64				nr_wakeups_affine_attempts;
 	u64				nr_wakeups_passive;
 	u64				nr_wakeups_idle;
+
+#ifdef CONFIG_SCHED_CORE
+	u64				core_forceidle_sum;
 #endif
-};
+#endif /* CONFIG_SCHEDSTATS */
+} ____cacheline_aligned;
 
 struct sched_entity {
 	/* For load-balancing: */
@@ -538,8 +549,6 @@ struct sched_entity {
 
 	u64				nr_migrations;
 
-	struct sched_statistics		statistics;
-
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	int				depth;
 	struct sched_entity		*parent;
@@ -610,10 +619,6 @@ struct sched_dl_entity {
 	 * task has to wait for a replenishment to be performed at the
 	 * next firing of dl_timer.
 	 *
-	 * @dl_boosted tells if we are boosted due to DI. If so we are
-	 * outside bandwidth enforcement mechanism (but only until we
-	 * exit the critical section);
-	 *
 	 * @dl_yielded tells if task gave up the CPU before consuming
 	 * all its available runtime during the last job.
 	 *
@@ -750,10 +755,6 @@ struct task_struct {
 #ifdef CONFIG_SMP
 	int				on_cpu;
 	struct __call_single_node	wake_entry;
-#ifdef CONFIG_THREAD_INFO_IN_TASK
-	/* Current CPU: */
-	unsigned int			cpu;
-#endif
 	unsigned int			wakee_flips;
 	unsigned long			wakee_flip_decay_ts;
 	struct task_struct		*last_wakee;
@@ -775,10 +776,10 @@ struct task_struct {
 	int				normal_prio;
 	unsigned int			rt_priority;
 
-	const struct sched_class	*sched_class;
 	struct sched_entity		se;
 	struct sched_rt_entity		rt;
 	struct sched_dl_entity		dl;
+	const struct sched_class	*sched_class;
 
 #ifdef CONFIG_SCHED_CORE
 	struct rb_node			core_node;
@@ -803,6 +804,8 @@ struct task_struct {
 	struct uclamp_se		uclamp[UCLAMP_CNT];
 #endif
 
+	struct sched_statistics         stats;
+
 #ifdef CONFIG_PREEMPT_NOTIFIERS
 	/* List of struct preempt_notifier: */
 	struct hlist_head		preempt_notifiers;
@@ -935,6 +938,9 @@ struct task_struct {
 	/* Recursion prevention for eventfd_signal() */
 	unsigned			in_eventfd_signal:1;
 #endif
+#ifdef CONFIG_IOMMU_SVA
+	unsigned			pasid_activated:1;
+#endif
 
 	unsigned long			atomic_flags; /* Flags requiring atomic access. */
 
@@ -989,8 +995,8 @@ struct task_struct {
 	/* CLONE_CHILD_CLEARTID: */
 	int __user			*clear_child_tid;
 
-	/* PF_IO_WORKER */
-	void				*pf_io_worker;
+	/* PF_KTHREAD | PF_IO_WORKER */
+	void				*worker_private;
 
 	u64				utime;
 	u64				stime;
@@ -1160,10 +1166,8 @@ struct task_struct {
 	/* Stacked block device info: */
 	struct bio_list			*bio_list;
 
-#ifdef CONFIG_BLOCK
 	/* Stack plugging: */
 	struct blk_plug			*plug;
-#endif
 
 	/* VM state: */
 	struct reclaim_state		*reclaim_state;
@@ -1343,6 +1347,9 @@ struct task_struct {
 #ifdef CONFIG_TRACE_IRQFLAGS
 	struct irqtrace_events		kcsan_save_irqtrace;
 #endif
+#ifdef CONFIG_KCSAN_WEAK_MEMORY
+	int				kcsan_stack_depth;
+#endif
 #endif
 
 #if IS_ENABLED(CONFIG_KUNIT)
@@ -1436,6 +1443,7 @@ struct task_struct {
 	int				pagefault_disabled;
 #ifdef CONFIG_MMU
 	struct task_struct		*oom_reaper_list;
+	struct timer_list		oom_reaper_timer;
 #endif
 #ifdef CONFIG_VMAP_STACK
 	struct vm_struct		*stack_vm_area;
@@ -1477,6 +1485,9 @@ struct task_struct {
 #ifdef CONFIG_KRETPROBES
 	struct llist_head               kretprobe_instances;
 #endif
+#ifdef CONFIG_RETHOOK
+	struct llist_head               rethooks;
+#endif
 
 #ifdef CONFIG_ARCH_HAS_PARANOID_L1D_FLUSH
 	/*
@@ -1616,19 +1627,32 @@ static inline pid_t task_pgrp_nr(struct task_struct *tsk)
 #define TASK_REPORT_IDLE	(TASK_REPORT + 1)
 #define TASK_REPORT_MAX		(TASK_REPORT_IDLE << 1)
 
-static inline unsigned int task_state_index(struct task_struct *tsk)
+static inline unsigned int __task_state_index(unsigned int tsk_state,
+					      unsigned int tsk_exit_state)
 {
-	unsigned int tsk_state = READ_ONCE(tsk->__state);
-	unsigned int state = (tsk_state | tsk->exit_state) & TASK_REPORT;
+	unsigned int state = (tsk_state | tsk_exit_state) & TASK_REPORT;
 
 	BUILD_BUG_ON_NOT_POWER_OF_2(TASK_REPORT_MAX);
 
 	if (tsk_state == TASK_IDLE)
 		state = TASK_REPORT_IDLE;
 
+	/*
+	 * We're lying here, but rather than expose a completely new task state
+	 * to userspace, we can make this appear as if the task has gone through
+	 * a regular rt_mutex_lock() call.
+	 */
+	if (tsk_state == TASK_RTLOCK_WAIT)
+		state = TASK_UNINTERRUPTIBLE;
+
 	return fls(state);
 }
 
+static inline unsigned int task_state_index(struct task_struct *tsk)
+{
+	return __task_state_index(READ_ONCE(tsk->__state), tsk->exit_state);
+}
+
 static inline char task_index_to_char(unsigned int state)
 {
 	static const char state_char[] = "RSDTtXZPI";
@@ -1665,6 +1689,7 @@ extern struct pid *cad_pid;
 #define PF_VCPU			0x00000001	/* I'm a virtual CPU */
 #define PF_IDLE			0x00000002	/* I am an IDLE thread */
 #define PF_EXITING		0x00000004	/* Getting shut down */
+#define PF_POSTCOREDUMP		0x00000008	/* Coredumps should ignore this task */
 #define PF_IO_WORKER		0x00000010	/* Task is an IO worker */
 #define PF_WQ_WORKER		0x00000020	/* I'm a workqueue worker */
 #define PF_FORKNOEXEC		0x00000040	/* Forked but didn't exec */
@@ -1675,7 +1700,6 @@ extern struct pid *cad_pid;
 #define PF_MEMALLOC		0x00000800	/* Allocating memory */
 #define PF_NPROC_EXCEEDED	0x00001000	/* set_user() noticed that RLIMIT_NPROC was exceeded */
 #define PF_USED_MATH		0x00002000	/* If unset the fpu must be initialized before use */
-#define PF_USED_ASYNC		0x00004000	/* Used async_schedule*(), used by module init */
 #define PF_NOFREEZE		0x00008000	/* This thread should not be frozen */
 #define PF_FROZEN		0x00010000	/* Frozen for system suspend */
 #define PF_KSWAPD		0x00020000	/* I am kswapd */
@@ -1685,7 +1709,6 @@ extern struct pid *cad_pid;
 						 * I am cleaning dirty pages from some other bdi. */
 #define PF_KTHREAD		0x00200000	/* I am a kernel thread */
 #define PF_RANDOMIZE		0x00400000	/* Randomize virtual address space */
-#define PF_SWAPWRITE		0x00800000	/* Allowed to write to swap */
 #define PF_NO_SETAFFINITY	0x04000000	/* Userland is not allowed to meddle with cpus_mask */
 #define PF_MCE_EARLY		0x08000000      /* Early kill for mce process policy */
 #define PF_MEMALLOC_PIN		0x10000000	/* Allocation context constrained to zones which allow long term pinning. */
@@ -1886,10 +1909,7 @@ extern struct thread_info init_thread_info;
 extern unsigned long init_stack[THREAD_SIZE / sizeof(unsigned long)];
 
 #ifdef CONFIG_THREAD_INFO_IN_TASK
-static inline struct thread_info *task_thread_info(struct task_struct *task)
-{
-	return &task->thread_info;
-}
+# define task_thread_info(task)	(&(task)->thread_info)
 #elif !defined(__HAVE_THREAD_FUNCTIONS)
 # define task_thread_info(task)	((struct thread_info *)(task)->stack)
 #endif
@@ -2014,7 +2034,7 @@ static inline int test_tsk_need_resched(struct task_struct *tsk)
 #if !defined(CONFIG_PREEMPTION) || defined(CONFIG_PREEMPT_DYNAMIC)
 extern int __cond_resched(void);
 
-#ifdef CONFIG_PREEMPT_DYNAMIC
+#if defined(CONFIG_PREEMPT_DYNAMIC) && defined(CONFIG_HAVE_PREEMPT_DYNAMIC_CALL)
 
 DECLARE_STATIC_CALL(cond_resched, __cond_resched);
 
@@ -2023,6 +2043,14 @@ static __always_inline int _cond_resched(void)
 	return static_call_mod(cond_resched)();
 }
 
+#elif defined(CONFIG_PREEMPT_DYNAMIC) && defined(CONFIG_HAVE_PREEMPT_DYNAMIC_KEY)
+extern int dynamic_cond_resched(void);
+
+static __always_inline int _cond_resched(void)
+{
+	return dynamic_cond_resched();
+}
+
 #else
 
 static inline int _cond_resched(void)
@@ -2039,7 +2067,7 @@ static inline int _cond_resched(void) { return 0; }
 #endif /* !defined(CONFIG_PREEMPTION) || defined(CONFIG_PREEMPT_DYNAMIC) */
 
 #define cond_resched() ({			\
-	___might_sleep(__FILE__, __LINE__, 0);	\
+	__might_resched(__FILE__, __LINE__, 0);	\
 	_cond_resched();			\
 })
 
@@ -2047,19 +2075,38 @@ extern int __cond_resched_lock(spinlock_t *lock);
 extern int __cond_resched_rwlock_read(rwlock_t *lock);
 extern int __cond_resched_rwlock_write(rwlock_t *lock);
 
-#define cond_resched_lock(lock) ({				\
-	___might_sleep(__FILE__, __LINE__, PREEMPT_LOCK_OFFSET);\
-	__cond_resched_lock(lock);				\
+#define MIGHT_RESCHED_RCU_SHIFT		8
+#define MIGHT_RESCHED_PREEMPT_MASK	((1U << MIGHT_RESCHED_RCU_SHIFT) - 1)
+
+#ifndef CONFIG_PREEMPT_RT
+/*
+ * Non RT kernels have an elevated preempt count due to the held lock,
+ * but are not allowed to be inside a RCU read side critical section
+ */
+# define PREEMPT_LOCK_RESCHED_OFFSETS	PREEMPT_LOCK_OFFSET
+#else
+/*
+ * spin/rw_lock() on RT implies rcu_read_lock(). The might_sleep() check in
+ * cond_resched*lock() has to take that into account because it checks for
+ * preempt_count() and rcu_preempt_depth().
+ */
+# define PREEMPT_LOCK_RESCHED_OFFSETS	\
+	(PREEMPT_LOCK_OFFSET + (1U << MIGHT_RESCHED_RCU_SHIFT))
+#endif
+
+#define cond_resched_lock(lock) ({						\
+	__might_resched(__FILE__, __LINE__, PREEMPT_LOCK_RESCHED_OFFSETS);	\
+	__cond_resched_lock(lock);						\
 })
 
-#define cond_resched_rwlock_read(lock) ({			\
-	__might_sleep(__FILE__, __LINE__, PREEMPT_LOCK_OFFSET);	\
-	__cond_resched_rwlock_read(lock);			\
+#define cond_resched_rwlock_read(lock) ({					\
+	__might_resched(__FILE__, __LINE__, PREEMPT_LOCK_RESCHED_OFFSETS);	\
+	__cond_resched_rwlock_read(lock);					\
 })
 
-#define cond_resched_rwlock_write(lock) ({			\
-	__might_sleep(__FILE__, __LINE__, PREEMPT_LOCK_OFFSET);	\
-	__cond_resched_rwlock_write(lock);			\
+#define cond_resched_rwlock_write(lock) ({					\
+	__might_resched(__FILE__, __LINE__, PREEMPT_LOCK_RESCHED_OFFSETS);	\
+	__cond_resched_rwlock_write(lock);					\
 })
 
 static inline void cond_resched_rcu(void)
@@ -2114,11 +2161,7 @@ static __always_inline bool need_resched(void)
 
 static inline unsigned int task_cpu(const struct task_struct *p)
 {
-#ifdef CONFIG_THREAD_INFO_IN_TASK
-	return READ_ONCE(p->cpu);
-#else
 	return READ_ONCE(task_thread_info(p)->cpu);
-#endif
 }
 
 extern void set_task_cpu(struct task_struct *p, unsigned int cpu);
@@ -2137,6 +2180,7 @@ static inline void set_task_cpu(struct task_struct *p, unsigned int cpu)
 #endif /* CONFIG_SMP */
 
 extern bool sched_task_on_rq(struct task_struct *p);
+extern unsigned long get_wchan(struct task_struct *p);
 
 /*
  * In order to reduce various lock holder preemption latencies provide an
@@ -2161,6 +2205,15 @@ extern long sched_getaffinity(pid_t pid, struct cpumask *mask);
 #endif
 
 #ifdef CONFIG_SMP
+static inline bool owner_on_cpu(struct task_struct *owner)
+{
+	/*
+	 * As lock holder preemption issue, we both skip spinning if
+	 * task is not on cpu or its cpu is preempted
+	 */
+	return READ_ONCE(owner->on_cpu) && !vcpu_is_preempted(task_cpu(owner));
+}
+
 /* Returns effective CPU energy utilization, as seen by the scheduler */
 unsigned long sched_cpu_util(int cpu, unsigned long max);
 #endif /* CONFIG_SMP */
diff --git a/include/linux/sched/affinity.h b/include/linux/sched/affinity.h
new file mode 100644
index 000000000000..227f5be81bcd
--- /dev/null
+++ b/include/linux/sched/affinity.h
@@ -0,0 +1 @@
+#include <linux/sched.h>
diff --git a/include/linux/sched/cond_resched.h b/include/linux/sched/cond_resched.h
new file mode 100644
index 000000000000..227f5be81bcd
--- /dev/null
+++ b/include/linux/sched/cond_resched.h
@@ -0,0 +1 @@
+#include <linux/sched.h>
diff --git a/include/linux/sched/cputime.h b/include/linux/sched/cputime.h
index 6c9f19a33865..ce3c58286062 100644
--- a/include/linux/sched/cputime.h
+++ b/include/linux/sched/cputime.h
@@ -18,15 +18,16 @@
 #endif /* CONFIG_VIRT_CPU_ACCOUNTING_NATIVE */
 
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
-extern void task_cputime(struct task_struct *t,
+extern bool task_cputime(struct task_struct *t,
 			 u64 *utime, u64 *stime);
 extern u64 task_gtime(struct task_struct *t);
 #else
-static inline void task_cputime(struct task_struct *t,
+static inline bool task_cputime(struct task_struct *t,
 				u64 *utime, u64 *stime)
 {
 	*utime = t->utime;
 	*stime = t->stime;
+	return false;
 }
 
 static inline u64 task_gtime(struct task_struct *t)
diff --git a/include/linux/sched/deadline.h b/include/linux/sched/deadline.h
index 1aff00b65f3c..7c83d4d5a971 100644
--- a/include/linux/sched/deadline.h
+++ b/include/linux/sched/deadline.h
@@ -6,6 +6,8 @@
  * NORMAL/BATCH tasks.
  */
 
+#include <linux/sched.h>
+
 #define MAX_DL_PRIO		0
 
 static inline int dl_prio(int prio)
diff --git a/include/linux/sched/idle.h b/include/linux/sched/idle.h
index 22873d276be6..d73d314d59c6 100644
--- a/include/linux/sched/idle.h
+++ b/include/linux/sched/idle.h
@@ -11,7 +11,11 @@ enum cpu_idle_type {
 	CPU_MAX_IDLE_TYPES
 };
 
+#ifdef CONFIG_SMP
 extern void wake_up_if_idle(int cpu);
+#else
+static inline void wake_up_if_idle(int cpu) { }
+#endif
 
 /*
  * Idle thread specific functions to determine the need_resched
diff --git a/include/linux/sched/isolation.h b/include/linux/sched/isolation.h
index cc9f393e2a70..8c15abd67aed 100644
--- a/include/linux/sched/isolation.h
+++ b/include/linux/sched/isolation.h
@@ -5,54 +5,55 @@
 #include <linux/init.h>
 #include <linux/tick.h>
 
-enum hk_flags {
-	HK_FLAG_TIMER		= 1,
-	HK_FLAG_RCU		= (1 << 1),
-	HK_FLAG_MISC		= (1 << 2),
-	HK_FLAG_SCHED		= (1 << 3),
-	HK_FLAG_TICK		= (1 << 4),
-	HK_FLAG_DOMAIN		= (1 << 5),
-	HK_FLAG_WQ		= (1 << 6),
-	HK_FLAG_MANAGED_IRQ	= (1 << 7),
-	HK_FLAG_KTHREAD		= (1 << 8),
+enum hk_type {
+	HK_TYPE_TIMER,
+	HK_TYPE_RCU,
+	HK_TYPE_MISC,
+	HK_TYPE_SCHED,
+	HK_TYPE_TICK,
+	HK_TYPE_DOMAIN,
+	HK_TYPE_WQ,
+	HK_TYPE_MANAGED_IRQ,
+	HK_TYPE_KTHREAD,
+	HK_TYPE_MAX
 };
 
 #ifdef CONFIG_CPU_ISOLATION
 DECLARE_STATIC_KEY_FALSE(housekeeping_overridden);
-extern int housekeeping_any_cpu(enum hk_flags flags);
-extern const struct cpumask *housekeeping_cpumask(enum hk_flags flags);
-extern bool housekeeping_enabled(enum hk_flags flags);
-extern void housekeeping_affine(struct task_struct *t, enum hk_flags flags);
-extern bool housekeeping_test_cpu(int cpu, enum hk_flags flags);
+extern int housekeeping_any_cpu(enum hk_type type);
+extern const struct cpumask *housekeeping_cpumask(enum hk_type type);
+extern bool housekeeping_enabled(enum hk_type type);
+extern void housekeeping_affine(struct task_struct *t, enum hk_type type);
+extern bool housekeeping_test_cpu(int cpu, enum hk_type type);
 extern void __init housekeeping_init(void);
 
 #else
 
-static inline int housekeeping_any_cpu(enum hk_flags flags)
+static inline int housekeeping_any_cpu(enum hk_type type)
 {
 	return smp_processor_id();
 }
 
-static inline const struct cpumask *housekeeping_cpumask(enum hk_flags flags)
+static inline const struct cpumask *housekeeping_cpumask(enum hk_type type)
 {
 	return cpu_possible_mask;
 }
 
-static inline bool housekeeping_enabled(enum hk_flags flags)
+static inline bool housekeeping_enabled(enum hk_type type)
 {
 	return false;
 }
 
 static inline void housekeeping_affine(struct task_struct *t,
-				       enum hk_flags flags) { }
+				       enum hk_type type) { }
 static inline void housekeeping_init(void) { }
 #endif /* CONFIG_CPU_ISOLATION */
 
-static inline bool housekeeping_cpu(int cpu, enum hk_flags flags)
+static inline bool housekeeping_cpu(int cpu, enum hk_type type)
 {
 #ifdef CONFIG_CPU_ISOLATION
 	if (static_branch_unlikely(&housekeeping_overridden))
-		return housekeeping_test_cpu(cpu, flags);
+		return housekeeping_test_cpu(cpu, type);
 #endif
 	return true;
 }
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
index 5561486fddef..1ad1f4bfa025 100644
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -8,6 +8,7 @@
 #include <linux/mm_types.h>
 #include <linux/gfp.h>
 #include <linux/sync_core.h>
+#include <linux/ioasid.h>
 
 /*
  * Routines for handling mm_structs
@@ -49,6 +50,35 @@ static inline void mmdrop(struct mm_struct *mm)
 		__mmdrop(mm);
 }
 
+#ifdef CONFIG_PREEMPT_RT
+/*
+ * RCU callback for delayed mm drop. Not strictly RCU, but call_rcu() is
+ * by far the least expensive way to do that.
+ */
+static inline void __mmdrop_delayed(struct rcu_head *rhp)
+{
+	struct mm_struct *mm = container_of(rhp, struct mm_struct, delayed_drop);
+
+	__mmdrop(mm);
+}
+
+/*
+ * Invoked from finish_task_switch(). Delegates the heavy lifting on RT
+ * kernels via RCU.
+ */
+static inline void mmdrop_sched(struct mm_struct *mm)
+{
+	/* Provides a full memory barrier. See mmdrop() */
+	if (atomic_dec_and_test(&mm->mm_count))
+		call_rcu(&mm->delayed_drop, __mmdrop_delayed);
+}
+#else
+static inline void mmdrop_sched(struct mm_struct *mm)
+{
+	mmdrop(mm);
+}
+#endif
+
 /**
  * mmget() - Pin the address space associated with a &struct mm_struct.
  * @mm: The address space to pin.
@@ -106,6 +136,14 @@ static inline void mm_update_next_owner(struct mm_struct *mm)
 #endif /* CONFIG_MEMCG */
 
 #ifdef CONFIG_MMU
+#ifndef arch_get_mmap_end
+#define arch_get_mmap_end(addr)	(TASK_SIZE)
+#endif
+
+#ifndef arch_get_mmap_base
+#define arch_get_mmap_base(addr, base) (base)
+#endif
+
 extern void arch_pick_mmap_layout(struct mm_struct *mm,
 				  struct rlimit *rlim_stack);
 extern unsigned long
@@ -185,6 +223,32 @@ static inline void fs_reclaim_acquire(gfp_t gfp_mask) { }
 static inline void fs_reclaim_release(gfp_t gfp_mask) { }
 #endif
 
+/* Any memory-allocation retry loop should use
+ * memalloc_retry_wait(), and pass the flags for the most
+ * constrained allocation attempt that might have failed.
+ * This provides useful documentation of where loops are,
+ * and a central place to fine tune the waiting as the MM
+ * implementation changes.
+ */
+static inline void memalloc_retry_wait(gfp_t gfp_flags)
+{
+	/* We use io_schedule_timeout because waiting for memory
+	 * typically included waiting for dirty pages to be
+	 * written out, which requires IO.
+	 */
+	__set_current_state(TASK_UNINTERRUPTIBLE);
+	gfp_flags = current_gfp_context(gfp_flags);
+	if (gfpflags_allow_blocking(gfp_flags) &&
+	    !(gfp_flags & __GFP_NORETRY))
+		/* Probably waited already, no need for much more */
+		io_schedule_timeout(1);
+	else
+		/* Probably didn't wait, and has now released a lock,
+		 * so now is a good time to wait
+		 */
+		io_schedule_timeout(HZ/50);
+}
+
 /**
  * might_alloc - Mark possible allocation sites
  * @gfp_mask: gfp_t flags that would be used to allocate
@@ -378,4 +442,29 @@ static inline void membarrier_update_current_mm(struct mm_struct *next_mm)
 }
 #endif
 
+#ifdef CONFIG_IOMMU_SVA
+static inline void mm_pasid_init(struct mm_struct *mm)
+{
+	mm->pasid = INVALID_IOASID;
+}
+
+/* Associate a PASID with an mm_struct: */
+static inline void mm_pasid_set(struct mm_struct *mm, u32 pasid)
+{
+	mm->pasid = pasid;
+}
+
+static inline void mm_pasid_drop(struct mm_struct *mm)
+{
+	if (pasid_valid(mm->pasid)) {
+		ioasid_free(mm->pasid);
+		mm->pasid = INVALID_IOASID;
+	}
+}
+#else
+static inline void mm_pasid_init(struct mm_struct *mm) {}
+static inline void mm_pasid_set(struct mm_struct *mm, u32 pasid) {}
+static inline void mm_pasid_drop(struct mm_struct *mm) {}
+#endif
+
 #endif /* _LINUX_SCHED_MM_H */
diff --git a/include/linux/sched/posix-timers.h b/include/linux/sched/posix-timers.h
new file mode 100644
index 000000000000..523a381d6c88
--- /dev/null
+++ b/include/linux/sched/posix-timers.h
@@ -0,0 +1 @@
+#include <linux/posix-timers.h>
diff --git a/include/linux/sched/rseq_api.h b/include/linux/sched/rseq_api.h
new file mode 100644
index 000000000000..cf2af72693e1
--- /dev/null
+++ b/include/linux/sched/rseq_api.h
@@ -0,0 +1 @@
+#include <linux/rseq.h>
diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index e5f4ce622ee6..3c8b34876744 100644
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -72,6 +72,17 @@ struct multiprocess_signals {
 	struct hlist_node node;
 };
 
+struct core_thread {
+	struct task_struct *task;
+	struct core_thread *next;
+};
+
+struct core_state {
+	atomic_t nr_threads;
+	struct core_thread dumper;
+	struct completion startup;
+};
+
 /*
  * NOTE! "signal_struct" does not have its own
  * locking, because a shared signal_struct always
@@ -98,18 +109,16 @@ struct signal_struct {
 
 	/* thread group exit support */
 	int			group_exit_code;
-	/* overloaded:
-	 * - notify group_exit_task when ->count is equal to notify_count
-	 * - everyone except group_exit_task is stopped during signal delivery
-	 *   of fatal signals, group_exit_task processes the signal.
-	 */
+	/* notify group_exec_task when notify_count is less or equal to 0 */
 	int			notify_count;
-	struct task_struct	*group_exit_task;
+	struct task_struct	*group_exec_task;
 
 	/* thread group stop support, overloads group_exit_code too */
 	int			group_stop_count;
 	unsigned int		flags; /* see SIGNAL_* flags below */
 
+	struct core_state *core_state; /* coredumping support */
+
 	/*
 	 * PR_SET_CHILD_SUBREAPER marks a process, like a service
 	 * manager, to re-parent orphan (double-forking) child processes
@@ -243,7 +252,6 @@ struct signal_struct {
 #define SIGNAL_STOP_STOPPED	0x00000001 /* job control stop in effect */
 #define SIGNAL_STOP_CONTINUED	0x00000002 /* SIGCONT since WCONTINUED reap */
 #define SIGNAL_GROUP_EXIT	0x00000004 /* group exit in progress */
-#define SIGNAL_GROUP_COREDUMP	0x00000008 /* coredump in progress */
 /*
  * Pending notifications to parent.
  */
@@ -259,31 +267,25 @@ struct signal_struct {
 static inline void signal_set_stop_flags(struct signal_struct *sig,
 					 unsigned int flags)
 {
-	WARN_ON(sig->flags & (SIGNAL_GROUP_EXIT|SIGNAL_GROUP_COREDUMP));
+	WARN_ON(sig->flags & SIGNAL_GROUP_EXIT);
 	sig->flags = (sig->flags & ~SIGNAL_STOP_MASK) | flags;
 }
 
-/* If true, all threads except ->group_exit_task have pending SIGKILL */
-static inline int signal_group_exit(const struct signal_struct *sig)
-{
-	return	(sig->flags & SIGNAL_GROUP_EXIT) ||
-		(sig->group_exit_task != NULL);
-}
-
 extern void flush_signals(struct task_struct *);
 extern void ignore_signals(struct task_struct *);
 extern void flush_signal_handlers(struct task_struct *, int force_default);
-extern int dequeue_signal(struct task_struct *task,
-			  sigset_t *mask, kernel_siginfo_t *info);
+extern int dequeue_signal(struct task_struct *task, sigset_t *mask,
+			  kernel_siginfo_t *info, enum pid_type *type);
 
 static inline int kernel_dequeue_signal(void)
 {
 	struct task_struct *task = current;
 	kernel_siginfo_t __info;
+	enum pid_type __type;
 	int ret;
 
 	spin_lock_irq(&task->sighand->siglock);
-	ret = dequeue_signal(task, &task->blocked, &__info);
+	ret = dequeue_signal(task, &task->blocked, &__info, &__type);
 	spin_unlock_irq(&task->sighand->siglock);
 
 	return ret;
@@ -338,6 +340,8 @@ extern int kill_pid(struct pid *pid, int sig, int priv);
 extern __must_check bool do_notify_parent(struct task_struct *, int);
 extern void __wake_up_parent(struct task_struct *p, struct task_struct *parent);
 extern void force_sig(int);
+extern void force_fatal_sig(int);
+extern void force_exit_sig(int);
 extern int send_sig(int, struct task_struct *, int);
 extern int zap_other_threads(struct task_struct *p);
 extern struct sigqueue *sigqueue_alloc(void);
@@ -345,6 +349,23 @@ extern void sigqueue_free(struct sigqueue *);
 extern int send_sigqueue(struct sigqueue *, struct pid *, enum pid_type);
 extern int do_sigaction(int, struct k_sigaction *, struct k_sigaction *);
 
+static inline void clear_notify_signal(void)
+{
+	clear_thread_flag(TIF_NOTIFY_SIGNAL);
+	smp_mb__after_atomic();
+}
+
+/*
+ * Called to break out of interruptible wait loops, and enter the
+ * exit_to_user_mode_loop().
+ */
+static inline void set_notify_signal(struct task_struct *task)
+{
+	if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_SIGNAL) &&
+	    !wake_up_state(task, TASK_INTERRUPTIBLE))
+		kick_process(task);
+}
+
 static inline int restart_syscall(void)
 {
 	set_tsk_thread_flag(current, TIF_SIGPENDING);
diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h
index 304f431178fd..c1076b5e17fb 100644
--- a/include/linux/sched/sysctl.h
+++ b/include/linux/sched/sysctl.h
@@ -7,20 +7,8 @@
 struct ctl_table;
 
 #ifdef CONFIG_DETECT_HUNG_TASK
-
-#ifdef CONFIG_SMP
-extern unsigned int sysctl_hung_task_all_cpu_backtrace;
-#else
-#define sysctl_hung_task_all_cpu_backtrace 0
-#endif /* CONFIG_SMP */
-
-extern int	     sysctl_hung_task_check_count;
-extern unsigned int  sysctl_hung_task_panic;
+/* used for hung_task and block/ */
 extern unsigned long sysctl_hung_task_timeout_secs;
-extern unsigned long sysctl_hung_task_check_interval_secs;
-extern int sysctl_hung_task_warnings;
-int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
-		void *buffer, size_t *lenp, loff_t *ppos);
 #else
 /* Avoid need for ifdefs elsewhere in the code */
 enum { sysctl_hung_task_timeout_secs = 0 };
@@ -35,6 +23,16 @@ enum sched_tunable_scaling {
 	SCHED_TUNABLESCALING_END,
 };
 
+#define NUMA_BALANCING_DISABLED		0x0
+#define NUMA_BALANCING_NORMAL		0x1
+#define NUMA_BALANCING_MEMORY_TIERING	0x2
+
+#ifdef CONFIG_NUMA_BALANCING
+extern int sysctl_numa_balancing_mode;
+#else
+#define sysctl_numa_balancing_mode	0
+#endif
+
 /*
  *  control realtime throttling:
  *
@@ -57,10 +55,6 @@ extern unsigned int sysctl_sched_uclamp_util_min_rt_default;
 extern unsigned int sysctl_sched_cfs_bandwidth_slice;
 #endif
 
-#ifdef CONFIG_SCHED_AUTOGROUP
-extern unsigned int sysctl_sched_autogroup_enabled;
-#endif
-
 extern int sysctl_sched_rr_timeslice;
 extern int sched_rr_timeslice;
 
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index ef02be869cf2..719c9a6cac8d 100644
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -54,10 +54,12 @@ extern asmlinkage void schedule_tail(struct task_struct *prev);
 extern void init_idle(struct task_struct *idle, int cpu);
 
 extern int sched_fork(unsigned long clone_flags, struct task_struct *p);
+extern void sched_cgroup_fork(struct task_struct *p, struct kernel_clone_args *kargs);
 extern void sched_post_fork(struct task_struct *p);
 extern void sched_dead(struct task_struct *p);
 
 void __noreturn do_task_dead(void);
+void __noreturn make_task_dead(int signr);
 
 extern void proc_caches_init(void);
 
@@ -77,7 +79,7 @@ static inline void exit_thread(struct task_struct *tsk)
 {
 }
 #endif
-extern void do_group_exit(int);
+extern __noreturn void do_group_exit(int);
 
 extern void exit_files(struct task_struct *);
 extern void exit_itimers(struct signal_struct *);
@@ -157,7 +159,7 @@ static inline struct vm_struct *task_stack_vm_area(const struct task_struct *t)
  * Protects ->fs, ->files, ->mm, ->group_info, ->comm, keyring
  * subscriptions and synchronises with wait4().  Also used in procfs.  Also
  * pins the final release of task.io_context.  Also protects ->cpuset and
- * ->cgroup.subsys[]. And ->vfork_done.
+ * ->cgroup.subsys[]. And ->vfork_done. And ->sysvshm.shm_clist.
  *
  * Nests both inside and outside of read_lock(&tasklist_lock).
  * It must not be nested with write_lock_irq(&tasklist_lock),
diff --git a/include/linux/sched/task_flags.h b/include/linux/sched/task_flags.h
new file mode 100644
index 000000000000..227f5be81bcd
--- /dev/null
+++ b/include/linux/sched/task_flags.h
@@ -0,0 +1 @@
+#include <linux/sched.h>
diff --git a/include/linux/sched/task_stack.h b/include/linux/sched/task_stack.h
index 2413427e439c..892562ebbd3a 100644
--- a/include/linux/sched/task_stack.h
+++ b/include/linux/sched/task_stack.h
@@ -25,7 +25,11 @@ static inline void *task_stack_page(const struct task_struct *task)
 
 static inline unsigned long *end_of_stack(const struct task_struct *task)
 {
+#ifdef CONFIG_STACK_GROWSUP
+	return (unsigned long *)((unsigned long)task->stack + THREAD_SIZE) - 1;
+#else
 	return task->stack;
+#endif
 }
 
 #elif !defined(__HAVE_THREAD_FUNCTIONS)
@@ -75,6 +79,8 @@ static inline void *try_get_task_stack(struct task_struct *tsk)
 static inline void put_task_stack(struct task_struct *tsk) {}
 #endif
 
+void exit_task_stack_account(struct task_struct *tsk);
+
 #define task_stack_end_corrupted(task) \
 		(*(end_of_stack(task)) != STACK_END_MAGIC)
 
diff --git a/include/linux/sched/thread_info_api.h b/include/linux/sched/thread_info_api.h
new file mode 100644
index 000000000000..2c60fbc16c08
--- /dev/null
+++ b/include/linux/sched/thread_info_api.h
@@ -0,0 +1 @@
+#include <linux/thread_info.h>
diff --git a/include/linux/sched/topology.h b/include/linux/sched/topology.h
index 8f0f778b7c91..56cffe42abbc 100644
--- a/include/linux/sched/topology.h
+++ b/include/linux/sched/topology.h
@@ -42,6 +42,13 @@ static inline int cpu_smt_flags(void)
 }
 #endif
 
+#ifdef CONFIG_SCHED_CLUSTER
+static inline int cpu_cluster_flags(void)
+{
+	return SD_SHARE_PKG_RESOURCES;
+}
+#endif
+
 #ifdef CONFIG_SCHED_MC
 static inline int cpu_core_flags(void)
 {
@@ -86,6 +93,7 @@ struct sched_domain {
 	unsigned int busy_factor;	/* less balancing by factor if busy */
 	unsigned int imbalance_pct;	/* No balance until over watermark */
 	unsigned int cache_nice_tries;	/* Leave cache hot tasks for # tries */
+	unsigned int imb_numa_nr;	/* Nr running tasks that allows a NUMA imbalance */
 
 	int nohz_idle;			/* NOHZ IDLE status */
 	int flags;			/* See SD_* */
@@ -98,7 +106,7 @@ struct sched_domain {
 
 	/* idle_balance() stats */
 	u64 max_newidle_lb_cost;
-	unsigned long next_decay_max_lb_cost;
+	unsigned long last_decay_max_lb_cost;
 
 	u64 avg_scan_cost;		/* select_idle_sibling */
 
@@ -259,10 +267,10 @@ unsigned long arch_scale_thermal_pressure(int cpu)
 }
 #endif
 
-#ifndef arch_set_thermal_pressure
+#ifndef arch_update_thermal_pressure
 static __always_inline
-void arch_set_thermal_pressure(const struct cpumask *cpus,
-			       unsigned long th_pressure)
+void arch_update_thermal_pressure(const struct cpumask *cpus,
+				  unsigned long capped_frequency)
 { }
 #endif
 
diff --git a/include/linux/sched_clock.h b/include/linux/sched_clock.h
index 835ee87ed792..cb41c5edb4d4 100644
--- a/include/linux/sched_clock.h
+++ b/include/linux/sched_clock.h
@@ -5,6 +5,8 @@
 #ifndef LINUX_SCHED_CLOCK
 #define LINUX_SCHED_CLOCK
 
+#include <linux/types.h>
+
 #ifdef CONFIG_GENERIC_SCHED_CLOCK
 /**
  * struct clock_read_data - data required to read from sched_clock()
diff --git a/include/linux/scmi_protocol.h b/include/linux/scmi_protocol.h
index 80e781c51ddc..b87551f41f9f 100644
--- a/include/linux/scmi_protocol.h
+++ b/include/linux/scmi_protocol.h
@@ -42,6 +42,7 @@ struct scmi_revision_info {
 
 struct scmi_clock_info {
 	char name[SCMI_MAX_STR_SIZE];
+	unsigned int enable_latency;
 	bool rate_discrete;
 	union {
 		struct {
@@ -82,6 +83,9 @@ struct scmi_clk_proto_ops {
 			u64 rate);
 	int (*enable)(const struct scmi_protocol_handle *ph, u32 clk_id);
 	int (*disable)(const struct scmi_protocol_handle *ph, u32 clk_id);
+	int (*enable_atomic)(const struct scmi_protocol_handle *ph, u32 clk_id);
+	int (*disable_atomic)(const struct scmi_protocol_handle *ph,
+			      u32 clk_id);
 };
 
 /**
@@ -612,6 +616,15 @@ struct scmi_notify_ops {
  * @devm_protocol_get: devres managed method to acquire a protocol and get specific
  *		       operations and a dedicated protocol handler
  * @devm_protocol_put: devres managed method to release a protocol
+ * @is_transport_atomic: method to check if the underlying transport for this
+ *			 instance handle is configured to support atomic
+ *			 transactions for commands.
+ *			 Some users of the SCMI stack in the upper layers could
+ *			 be interested to know if they can assume SCMI
+ *			 command transactions associated to this handle will
+ *			 never sleep and act accordingly.
+ *			 An optional atomic threshold value could be returned
+ *			 where configured.
  * @notify_ops: pointer to set of notifications related operations
  */
 struct scmi_handle {
@@ -622,6 +635,8 @@ struct scmi_handle {
 		(*devm_protocol_get)(struct scmi_device *sdev, u8 proto,
 				     struct scmi_protocol_handle **ph);
 	void (*devm_protocol_put)(struct scmi_device *sdev, u8 proto);
+	bool (*is_transport_atomic)(const struct scmi_handle *handle,
+				    unsigned int *atomic_threshold);
 
 	const struct scmi_notify_ops *notify_ops;
 };
diff --git a/include/linux/sdb.h b/include/linux/sdb.h
deleted file mode 100644
index a2404a2bbd10..000000000000
--- a/include/linux/sdb.h
+++ /dev/null
@@ -1,160 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * This is the official version 1.1 of sdb.h
- */
-#ifndef __SDB_H__
-#define __SDB_H__
-#ifdef __KERNEL__
-#include <linux/types.h>
-#else
-#include <stdint.h>
-#endif
-
-/*
- * All structures are 64 bytes long and are expected
- * to live in an array, one for each interconnect.
- * Most fields of the structures are shared among the
- * various types, and most-specific fields are at the
- * beginning (for alignment reasons, and to keep the
- * magic number at the head of the interconnect record
- */
-
-/* Product, 40 bytes at offset 24, 8-byte aligned
- *
- * device_id is vendor-assigned; version is device-specific,
- * date is hex (e.g 0x20120501), name is UTF-8, blank-filled
- * and not terminated with a 0 byte.
- */
-struct sdb_product {
-	uint64_t		vendor_id;	/* 0x18..0x1f */
-	uint32_t		device_id;	/* 0x20..0x23 */
-	uint32_t		version;	/* 0x24..0x27 */
-	uint32_t		date;		/* 0x28..0x2b */
-	uint8_t			name[19];	/* 0x2c..0x3e */
-	uint8_t			record_type;	/* 0x3f */
-};
-
-/*
- * Component, 56 bytes at offset 8, 8-byte aligned
- *
- * The address range is first to last, inclusive
- * (for example 0x100000 - 0x10ffff)
- */
-struct sdb_component {
-	uint64_t		addr_first;	/* 0x08..0x0f */
-	uint64_t		addr_last;	/* 0x10..0x17 */
-	struct sdb_product	product;	/* 0x18..0x3f */
-};
-
-/* Type of the SDB record */
-enum sdb_record_type {
-	sdb_type_interconnect	= 0x00,
-	sdb_type_device		= 0x01,
-	sdb_type_bridge		= 0x02,
-	sdb_type_integration	= 0x80,
-	sdb_type_repo_url	= 0x81,
-	sdb_type_synthesis	= 0x82,
-	sdb_type_empty		= 0xFF,
-};
-
-/* Type 0: interconnect (first of the array)
- *
- * sdb_records is the length of the table including this first
- * record, version is 1. The bus type is enumerated later.
- */
-#define				SDB_MAGIC	0x5344422d /* "SDB-" */
-struct sdb_interconnect {
-	uint32_t		sdb_magic;	/* 0x00-0x03 */
-	uint16_t		sdb_records;	/* 0x04-0x05 */
-	uint8_t			sdb_version;	/* 0x06 */
-	uint8_t			sdb_bus_type;	/* 0x07 */
-	struct sdb_component	sdb_component;	/* 0x08-0x3f */
-};
-
-/* Type 1: device
- *
- * class is 0 for "custom device", other values are
- * to be standardized; ABI version is for the driver,
- * bus-specific bits are defined by each bus (see below)
- */
-struct sdb_device {
-	uint16_t		abi_class;	/* 0x00-0x01 */
-	uint8_t			abi_ver_major;	/* 0x02 */
-	uint8_t			abi_ver_minor;	/* 0x03 */
-	uint32_t		bus_specific;	/* 0x04-0x07 */
-	struct sdb_component	sdb_component;	/* 0x08-0x3f */
-};
-
-/* Type 2: bridge
- *
- * child is the address of the nested SDB table
- */
-struct sdb_bridge {
-	uint64_t		sdb_child;	/* 0x00-0x07 */
-	struct sdb_component	sdb_component;	/* 0x08-0x3f */
-};
-
-/* Type 0x80: integration
- *
- * all types with bit 7 set are meta-information, so
- * software can ignore the types it doesn't know. Here we
- * just provide product information for an aggregate device
- */
-struct sdb_integration {
-	uint8_t			reserved[24];	/* 0x00-0x17 */
-	struct sdb_product	product;	/* 0x08-0x3f */
-};
-
-/* Type 0x81: Top module repository url
- *
- * again, an informative field that software can ignore
- */
-struct sdb_repo_url {
-	uint8_t			repo_url[63];	/* 0x00-0x3e */
-	uint8_t			record_type;	/* 0x3f */
-};
-
-/* Type 0x82: Synthesis tool information
- *
- * this informative record
- */
-struct sdb_synthesis {
-	uint8_t			syn_name[16];	/* 0x00-0x0f */
-	uint8_t			commit_id[16];	/* 0x10-0x1f */
-	uint8_t			tool_name[8];	/* 0x20-0x27 */
-	uint32_t		tool_version;	/* 0x28-0x2b */
-	uint32_t		date;		/* 0x2c-0x2f */
-	uint8_t			user_name[15];	/* 0x30-0x3e */
-	uint8_t			record_type;	/* 0x3f */
-};
-
-/* Type 0xff: empty
- *
- * this allows keeping empty slots during development,
- * so they can be filled later with minimal efforts and
- * no misleading description is ever shipped -- hopefully.
- * It can also be used to pad a table to a desired length.
- */
-struct sdb_empty {
-	uint8_t			reserved[63];	/* 0x00-0x3e */
-	uint8_t			record_type;	/* 0x3f */
-};
-
-/* The type of bus, for bus-specific flags */
-enum sdb_bus_type {
-	sdb_wishbone = 0x00,
-	sdb_data     = 0x01,
-};
-
-#define SDB_WB_WIDTH_MASK	0x0f
-#define SDB_WB_ACCESS8			0x01
-#define SDB_WB_ACCESS16			0x02
-#define SDB_WB_ACCESS32			0x04
-#define SDB_WB_ACCESS64			0x08
-#define SDB_WB_LITTLE_ENDIAN	0x80
-
-#define SDB_DATA_READ		0x04
-#define SDB_DATA_WRITE		0x02
-#define SDB_DATA_EXEC		0x01
-
-#endif /* __SDB_H__ */
diff --git a/include/linux/security.h b/include/linux/security.h
index 5b7288521300..25b3ef71f495 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -179,7 +179,7 @@ struct xfrm_policy;
 struct xfrm_state;
 struct xfrm_user_sec_ctx;
 struct seq_file;
-struct sctp_endpoint;
+struct sctp_association;
 
 #ifdef CONFIG_MMU
 extern unsigned long mmap_min_addr;
@@ -258,13 +258,13 @@ extern int security_init(void);
 extern int early_security_init(void);
 
 /* Security operations */
-int security_binder_set_context_mgr(struct task_struct *mgr);
-int security_binder_transaction(struct task_struct *from,
-				struct task_struct *to);
-int security_binder_transfer_binder(struct task_struct *from,
-				    struct task_struct *to);
-int security_binder_transfer_file(struct task_struct *from,
-				  struct task_struct *to, struct file *file);
+int security_binder_set_context_mgr(const struct cred *mgr);
+int security_binder_transaction(const struct cred *from,
+				const struct cred *to);
+int security_binder_transfer_binder(const struct cred *from,
+				    const struct cred *to);
+int security_binder_transfer_file(const struct cred *from,
+				  const struct cred *to, struct file *file);
 int security_ptrace_access_check(struct task_struct *child, unsigned int mode);
 int security_ptrace_traceme(struct task_struct *parent);
 int security_capget(struct task_struct *target,
@@ -313,12 +313,11 @@ int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 				struct super_block *newsb,
 				unsigned long kern_flags,
 				unsigned long *set_kern_flags);
-int security_add_mnt_opt(const char *option, const char *val,
-				int len, void **mnt_opts);
 int security_move_mount(const struct path *from_path, const struct path *to_path);
 int security_dentry_init_security(struct dentry *dentry, int mode,
-					const struct qstr *name, void **ctx,
-					u32 *ctxlen);
+				  const struct qstr *name,
+				  const char **xattr_name, void **ctx,
+				  u32 *ctxlen);
 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 					struct qstr *name,
 					const struct cred *old,
@@ -417,7 +416,7 @@ int security_task_fix_setgid(struct cred *new, const struct cred *old,
 int security_task_setpgid(struct task_struct *p, pid_t pgid);
 int security_task_getpgid(struct task_struct *p);
 int security_task_getsid(struct task_struct *p);
-void security_task_getsecid_subj(struct task_struct *p, u32 *secid);
+void security_current_getsecid_subj(u32 *secid);
 void security_task_getsecid_obj(struct task_struct *p, u32 *secid);
 int security_task_setnice(struct task_struct *p, int nice);
 int security_task_setioprio(struct task_struct *p, int ioprio);
@@ -508,25 +507,25 @@ static inline int early_security_init(void)
 	return 0;
 }
 
-static inline int security_binder_set_context_mgr(struct task_struct *mgr)
+static inline int security_binder_set_context_mgr(const struct cred *mgr)
 {
 	return 0;
 }
 
-static inline int security_binder_transaction(struct task_struct *from,
-					      struct task_struct *to)
+static inline int security_binder_transaction(const struct cred *from,
+					      const struct cred *to)
 {
 	return 0;
 }
 
-static inline int security_binder_transfer_binder(struct task_struct *from,
-						  struct task_struct *to)
+static inline int security_binder_transfer_binder(const struct cred *from,
+						  const struct cred *to)
 {
 	return 0;
 }
 
-static inline int security_binder_transfer_file(struct task_struct *from,
-						struct task_struct *to,
+static inline int security_binder_transfer_file(const struct cred *from,
+						const struct cred *to,
 						struct file *file)
 {
 	return 0;
@@ -710,12 +709,6 @@ static inline int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 	return 0;
 }
 
-static inline int security_add_mnt_opt(const char *option, const char *val,
-					int len, void **mnt_opts)
-{
-	return 0;
-}
-
 static inline int security_move_mount(const struct path *from_path,
 				      const struct path *to_path)
 {
@@ -739,6 +732,7 @@ static inline void security_inode_free(struct inode *inode)
 static inline int security_dentry_init_security(struct dentry *dentry,
 						 int mode,
 						 const struct qstr *name,
+						 const char **xattr_name,
 						 void **ctx,
 						 u32 *ctxlen)
 {
@@ -1041,6 +1035,11 @@ static inline void security_transfer_creds(struct cred *new,
 {
 }
 
+static inline void security_cred_getsecid(const struct cred *c, u32 *secid)
+{
+	*secid = 0;
+}
+
 static inline int security_kernel_act_as(struct cred *cred, u32 secid)
 {
 	return 0;
@@ -1112,7 +1111,7 @@ static inline int security_task_getsid(struct task_struct *p)
 	return 0;
 }
 
-static inline void security_task_getsecid_subj(struct task_struct *p, u32 *secid)
+static inline void security_current_getsecid_subj(u32 *secid)
 {
 	*secid = 0;
 }
@@ -1418,11 +1417,13 @@ int security_tun_dev_create(void);
 int security_tun_dev_attach_queue(void *security);
 int security_tun_dev_attach(struct sock *sk, void *security);
 int security_tun_dev_open(void *security);
-int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb);
+int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb);
 int security_sctp_bind_connect(struct sock *sk, int optname,
 			       struct sockaddr *address, int addrlen);
-void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
+void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk,
 			    struct sock *newsk);
+int security_sctp_assoc_established(struct sctp_association *asoc,
+				    struct sk_buff *skb);
 
 #else	/* CONFIG_SECURITY_NETWORK */
 static inline int security_unix_stream_connect(struct sock *sock,
@@ -1624,7 +1625,7 @@ static inline int security_tun_dev_open(void *security)
 	return 0;
 }
 
-static inline int security_sctp_assoc_request(struct sctp_endpoint *ep,
+static inline int security_sctp_assoc_request(struct sctp_association *asoc,
 					      struct sk_buff *skb)
 {
 	return 0;
@@ -1637,11 +1638,17 @@ static inline int security_sctp_bind_connect(struct sock *sk, int optname,
 	return 0;
 }
 
-static inline void security_sctp_sk_clone(struct sctp_endpoint *ep,
+static inline void security_sctp_sk_clone(struct sctp_association *asoc,
 					  struct sock *sk,
 					  struct sock *newsk)
 {
 }
+
+static inline int security_sctp_assoc_established(struct sctp_association *asoc,
+						  struct sk_buff *skb)
+{
+	return 0;
+}
 #endif	/* CONFIG_SECURITY_NETWORK */
 
 #ifdef CONFIG_SECURITY_INFINIBAND
@@ -2038,4 +2045,20 @@ static inline int security_perf_event_write(struct perf_event *event)
 #endif /* CONFIG_SECURITY */
 #endif /* CONFIG_PERF_EVENTS */
 
+#ifdef CONFIG_IO_URING
+#ifdef CONFIG_SECURITY
+extern int security_uring_override_creds(const struct cred *new);
+extern int security_uring_sqpoll(void);
+#else
+static inline int security_uring_override_creds(const struct cred *new)
+{
+	return 0;
+}
+static inline int security_uring_sqpoll(void)
+{
+	return 0;
+}
+#endif /* CONFIG_SECURITY */
+#endif /* CONFIG_IO_URING */
+
 #endif /* ! __LINUX_SECURITY_H */
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index dd99569595fd..60820ab511d2 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -4,6 +4,7 @@
 
 #include <linux/types.h>
 #include <linux/string.h>
+#include <linux/string_helpers.h>
 #include <linux/bug.h>
 #include <linux/mutex.h>
 #include <linux/cpumask.h>
@@ -135,7 +136,21 @@ static inline void seq_escape_str(struct seq_file *m, const char *src,
 	seq_escape_mem(m, src, strlen(src), flags, esc);
 }
 
-void seq_escape(struct seq_file *m, const char *s, const char *esc);
+/**
+ * seq_escape - print string into buffer, escaping some characters
+ * @m: target buffer
+ * @s: NULL-terminated string
+ * @esc: set of characters that need escaping
+ *
+ * Puts string into buffer, replacing each occurrence of character from
+ * @esc with usual octal escape.
+ *
+ * Use seq_has_overflowed() to check for errors.
+ */
+static inline void seq_escape(struct seq_file *m, const char *s, const char *esc)
+{
+	seq_escape_str(m, s, ESCAPE_OCTAL, esc);
+}
 
 void seq_hex_dump(struct seq_file *m, const char *prefix_str, int prefix_type,
 		  int rowsize, int groupsize, const void *buf, size_t len,
@@ -147,6 +162,7 @@ int seq_dentry(struct seq_file *, struct dentry *, const char *);
 int seq_path_root(struct seq_file *m, const struct path *path,
 		  const struct path *root, const char *esc);
 
+void *single_start(struct seq_file *, loff_t *);
 int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
 int single_open_size(struct file *, int (*)(struct seq_file *, void *), void *, size_t);
 int single_release(struct inode *, struct file *);
@@ -194,7 +210,7 @@ static const struct file_operations __name ## _fops = {			\
 #define DEFINE_PROC_SHOW_ATTRIBUTE(__name)				\
 static int __name ## _open(struct inode *inode, struct file *file)	\
 {									\
-	return single_open(file, __name ## _show, inode->i_private);	\
+	return single_open(file, __name ## _show, pde_data(inode));	\
 }									\
 									\
 static const struct proc_ops __name ## _proc_ops = {			\
diff --git a/include/linux/seq_file_net.h b/include/linux/seq_file_net.h
index 0fdbe1ddd8d1..b97912fdbae7 100644
--- a/include/linux/seq_file_net.h
+++ b/include/linux/seq_file_net.h
@@ -9,7 +9,8 @@ extern struct net init_net;
 
 struct seq_net_private {
 #ifdef CONFIG_NET_NS
-	struct net *net;
+	struct net	*net;
+	netns_tracker	ns_tracker;
 #endif
 };
 
diff --git a/include/linux/seqlock_api.h b/include/linux/seqlock_api.h
new file mode 100644
index 000000000000..be91e7d3b826
--- /dev/null
+++ b/include/linux/seqlock_api.h
@@ -0,0 +1 @@
+#include <linux/seqlock.h>
diff --git a/include/linux/seqno-fence.h b/include/linux/seqno-fence.h
deleted file mode 100644
index 3cca2b8fac43..000000000000
--- a/include/linux/seqno-fence.h
+++ /dev/null
@@ -1,109 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * seqno-fence, using a dma-buf to synchronize fencing
- *
- * Copyright (C) 2012 Texas Instruments
- * Copyright (C) 2012 Canonical Ltd
- * Authors:
- *   Rob Clark <robdclark@gmail.com>
- *   Maarten Lankhorst <maarten.lankhorst@canonical.com>
- */
-
-#ifndef __LINUX_SEQNO_FENCE_H
-#define __LINUX_SEQNO_FENCE_H
-
-#include <linux/dma-fence.h>
-#include <linux/dma-buf.h>
-
-enum seqno_fence_condition {
-	SEQNO_FENCE_WAIT_GEQUAL,
-	SEQNO_FENCE_WAIT_NONZERO
-};
-
-struct seqno_fence {
-	struct dma_fence base;
-
-	const struct dma_fence_ops *ops;
-	struct dma_buf *sync_buf;
-	uint32_t seqno_ofs;
-	enum seqno_fence_condition condition;
-};
-
-extern const struct dma_fence_ops seqno_fence_ops;
-
-/**
- * to_seqno_fence - cast a fence to a seqno_fence
- * @fence: fence to cast to a seqno_fence
- *
- * Returns NULL if the fence is not a seqno_fence,
- * or the seqno_fence otherwise.
- */
-static inline struct seqno_fence *
-to_seqno_fence(struct dma_fence *fence)
-{
-	if (fence->ops != &seqno_fence_ops)
-		return NULL;
-	return container_of(fence, struct seqno_fence, base);
-}
-
-/**
- * seqno_fence_init - initialize a seqno fence
- * @fence: seqno_fence to initialize
- * @lock: pointer to spinlock to use for fence
- * @sync_buf: buffer containing the memory location to signal on
- * @context: the execution context this fence is a part of
- * @seqno_ofs: the offset within @sync_buf
- * @seqno: the sequence # to signal on
- * @cond: fence wait condition
- * @ops: the fence_ops for operations on this seqno fence
- *
- * This function initializes a struct seqno_fence with passed parameters,
- * and takes a reference on sync_buf which is released on fence destruction.
- *
- * A seqno_fence is a dma_fence which can complete in software when
- * enable_signaling is called, but it also completes when
- * (s32)((sync_buf)[seqno_ofs] - seqno) >= 0 is true
- *
- * The seqno_fence will take a refcount on the sync_buf until it's
- * destroyed, but actual lifetime of sync_buf may be longer if one of the
- * callers take a reference to it.
- *
- * Certain hardware have instructions to insert this type of wait condition
- * in the command stream, so no intervention from software would be needed.
- * This type of fence can be destroyed before completed, however a reference
- * on the sync_buf dma-buf can be taken. It is encouraged to re-use the same
- * dma-buf for sync_buf, since mapping or unmapping the sync_buf to the
- * device's vm can be expensive.
- *
- * It is recommended for creators of seqno_fence to call dma_fence_signal()
- * before destruction. This will prevent possible issues from wraparound at
- * time of issue vs time of check, since users can check dma_fence_is_signaled()
- * before submitting instructions for the hardware to wait on the fence.
- * However, when ops.enable_signaling is not called, it doesn't have to be
- * done as soon as possible, just before there's any real danger of seqno
- * wraparound.
- */
-static inline void
-seqno_fence_init(struct seqno_fence *fence, spinlock_t *lock,
-		 struct dma_buf *sync_buf,  uint32_t context,
-		 uint32_t seqno_ofs, uint32_t seqno,
-		 enum seqno_fence_condition cond,
-		 const struct dma_fence_ops *ops)
-{
-	BUG_ON(!fence || !sync_buf || !ops);
-	BUG_ON(!ops->wait || !ops->enable_signaling ||
-	       !ops->get_driver_name || !ops->get_timeline_name);
-
-	/*
-	 * ops is used in dma_fence_init for get_driver_name, so needs to be
-	 * initialized first
-	 */
-	fence->ops = ops;
-	dma_fence_init(&fence->base, &seqno_fence_ops, lock, context, seqno);
-	get_dma_buf(sync_buf);
-	fence->sync_buf = sync_buf;
-	fence->seqno_ofs = seqno_ofs;
-	fence->condition = cond;
-}
-
-#endif /* __LINUX_SEQNO_FENCE_H */
diff --git a/include/linux/serial.h b/include/linux/serial.h
index 0916107c77f9..0b8b7d7c8f33 100644
--- a/include/linux/serial.h
+++ b/include/linux/serial.h
@@ -12,6 +12,8 @@
 #include <asm/page.h>
 #include <uapi/linux/serial.h>
 
+/* Helper for dealing with UART_LCR_WLEN* defines */
+#define UART_LCR_WLEN(x)	((x) - 5)
 
 /*
  * Counters of the input lines (CTS, DSR, RI, CD) interrupts
diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
index 5db211f43b29..ff84a3ed10ea 100644
--- a/include/linux/serial_8250.h
+++ b/include/linux/serial_8250.h
@@ -104,8 +104,6 @@ struct uart_8250_port {
 	unsigned char		ier;
 	unsigned char		lcr;
 	unsigned char		mcr;
-	unsigned char		mcr_mask;	/* mask of user bits */
-	unsigned char		mcr_force;	/* mask of forced bits */
 	unsigned char		cur_iotype;	/* Running I/O type */
 	unsigned int		rpm_tx_active;
 	unsigned char		canary;		/* non-zero during system sleep
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index c58cc142d23f..d4828e69087a 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -171,7 +171,7 @@ struct uart_port {
 	 * assigned from the serial_struct flags in uart_set_info()
 	 * [for bit definitions in the UPF_CHANGE_MASK]
 	 *
-	 * Bits [0..UPF_LAST_USER] are userspace defined/visible/changeable
+	 * Bits [0..ASYNCB_LAST_USER] are userspace defined/visible/changeable
 	 * The remaining bits are serial-core specific and not modifiable by
 	 * userspace.
 	 */
@@ -399,7 +399,7 @@ int uart_set_options(struct uart_port *port, struct console *co, int baud,
 struct tty_driver *uart_console_device(struct console *co, int *index);
 void uart_console_write(struct uart_port *port, const char *s,
 			unsigned int count,
-			void (*putchar)(struct uart_port *, int));
+			void (*putchar)(struct uart_port *, unsigned char));
 
 /*
  * Port/driver registration/removal
@@ -458,6 +458,8 @@ extern void uart_handle_cts_change(struct uart_port *uport,
 extern void uart_insert_char(struct uart_port *port, unsigned int status,
 		 unsigned int overrun, unsigned int ch, unsigned int flag);
 
+void uart_xchar_out(struct uart_port *uport, int offset);
+
 #ifdef CONFIG_MAGIC_SYSRQ_SERIAL
 #define SYSRQ_TIMEOUT	(HZ * 5)
 
diff --git a/include/linux/serial_s3c.h b/include/linux/serial_s3c.h
index cf0de4a86640..f6c3323fc4c5 100644
--- a/include/linux/serial_s3c.h
+++ b/include/linux/serial_s3c.h
@@ -27,15 +27,6 @@
 #define S3C2410_UERSTAT	  (0x14)
 #define S3C2410_UFSTAT	  (0x18)
 #define S3C2410_UMSTAT	  (0x1C)
-#define USI_CON		  (0xC4)
-#define USI_OPTION	  (0xC8)
-
-#define USI_CON_RESET			(1<<0)
-#define USI_CON_RESET_MASK		(1<<0)
-
-#define USI_OPTION_HWACG_CLKREQ_ON	(1<<1)
-#define USI_OPTION_HWACG_CLKSTOP_ON	(1<<2)
-#define USI_OPTION_HWACG_MASK		(3<<1)
 
 #define S3C2410_LCON_CFGMASK	  ((0xF<<3)|(0x3))
 
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index 166158b6e917..ab51d3cd39bd 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -24,6 +24,7 @@ struct shmem_inode_info {
 	struct shared_policy	policy;		/* NUMA memory alloc policy */
 	struct simple_xattrs	xattrs;		/* list of xattrs */
 	atomic_t		stop_eviction;	/* hold when working on inode */
+	struct timespec64	i_crtime;	/* file creation time */
 	struct inode		vfs_inode;
 };
 
@@ -83,8 +84,7 @@ extern void shmem_unlock_mapping(struct address_space *mapping);
 extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
 					pgoff_t index, gfp_t gfp_mask);
 extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end);
-extern int shmem_unuse(unsigned int type, bool frontswap,
-		       unsigned long *fs_pages_to_unuse);
+int shmem_unuse(unsigned int type);
 
 extern bool shmem_is_huge(struct vm_area_struct *vma,
 			  struct inode *inode, pgoff_t index);
diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h
index 9814fff58a69..76fbf92b04d9 100644
--- a/include/linux/shrinker.h
+++ b/include/linux/shrinker.h
@@ -93,4 +93,5 @@ extern void register_shrinker_prepared(struct shrinker *shrinker);
 extern int register_shrinker(struct shrinker *shrinker);
 extern void unregister_shrinker(struct shrinker *shrinker);
 extern void free_prealloced_shrinker(struct shrinker *shrinker);
+extern void synchronize_shrinkers(void);
 #endif
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 3f96a6374e4f..a6db6f2ae113 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -126,7 +126,6 @@ static inline int sigequalsets(const sigset_t *set1, const sigset_t *set2)
 #define sigmask(sig)	(1UL << ((sig) - 1))
 
 #ifndef __HAVE_ARCH_SIG_SETOPS
-#include <linux/string.h>
 
 #define _SIG_SET_BINOP(name, op)					\
 static inline void name(sigset_t *r, const sigset_t *a, const sigset_t *b) \
@@ -464,6 +463,12 @@ int __save_altstack(stack_t __user *, unsigned long);
 	unsafe_put_user(t->sas_ss_size, &__uss->ss_size, label); \
 } while (0);
 
+#ifdef CONFIG_DYNAMIC_SIGFRAME
+bool sigaltstack_size_valid(size_t ss_size);
+#else
+static inline bool sigaltstack_size_valid(size_t size) { return true; }
+#endif /* !CONFIG_DYNAMIC_SIGFRAME */
+
 #ifdef CONFIG_PROC_FS
 struct seq_file;
 extern void render_sigset_t(struct seq_file *, const char *, sigset_t *);
diff --git a/include/linux/signal_types.h b/include/linux/signal_types.h
index 34cb28b8f16c..a70b2bdbf4d9 100644
--- a/include/linux/signal_types.h
+++ b/include/linux/signal_types.h
@@ -70,6 +70,9 @@ struct ksignal {
 	int sig;
 };
 
+/* Used to kill the race between sigaction and forced signals */
+#define SA_IMMUTABLE		0x00800000
+
 #ifndef __ARCH_UAPI_SA_FLAGS
 #ifdef SA_RESTORER
 #define __ARCH_UAPI_SA_FLAGS	SA_RESTORER
diff --git a/include/linux/siphash.h b/include/linux/siphash.h
index bf21591a9e5e..cce8a9acc76c 100644
--- a/include/linux/siphash.h
+++ b/include/linux/siphash.h
@@ -21,15 +21,15 @@ typedef struct {
 	u64 key[2];
 } siphash_key_t;
 
+#define siphash_aligned_key_t siphash_key_t __aligned(16)
+
 static inline bool siphash_key_is_zero(const siphash_key_t *key)
 {
 	return !(key->key[0] | key->key[1]);
 }
 
 u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key);
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
 u64 __siphash_unaligned(const void *data, size_t len, const siphash_key_t *key);
-#endif
 
 u64 siphash_1u64(const u64 a, const siphash_key_t *key);
 u64 siphash_2u64(const u64 a, const u64 b, const siphash_key_t *key);
@@ -82,10 +82,9 @@ static inline u64 ___siphash_aligned(const __le64 *data, size_t len,
 static inline u64 siphash(const void *data, size_t len,
 			  const siphash_key_t *key)
 {
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
-	if (!IS_ALIGNED((unsigned long)data, SIPHASH_ALIGNMENT))
+	if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) ||
+	    !IS_ALIGNED((unsigned long)data, SIPHASH_ALIGNMENT))
 		return __siphash_unaligned(data, len, key);
-#endif
 	return ___siphash_aligned(data, len, key);
 }
 
@@ -96,10 +95,8 @@ typedef struct {
 
 u32 __hsiphash_aligned(const void *data, size_t len,
 		       const hsiphash_key_t *key);
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
 u32 __hsiphash_unaligned(const void *data, size_t len,
 			 const hsiphash_key_t *key);
-#endif
 
 u32 hsiphash_1u32(const u32 a, const hsiphash_key_t *key);
 u32 hsiphash_2u32(const u32 a, const u32 b, const hsiphash_key_t *key);
@@ -135,10 +132,9 @@ static inline u32 ___hsiphash_aligned(const __le32 *data, size_t len,
 static inline u32 hsiphash(const void *data, size_t len,
 			   const hsiphash_key_t *key)
 {
-#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
-	if (!IS_ALIGNED((unsigned long)data, HSIPHASH_ALIGNMENT))
+	if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) ||
+	    !IS_ALIGNED((unsigned long)data, HSIPHASH_ALIGNMENT))
 		return __hsiphash_unaligned(data, len, key);
-#endif
 	return ___hsiphash_aligned(data, len, key);
 }
 
diff --git a/include/linux/sizes.h b/include/linux/sizes.h
index 1ac79bcee2bb..84aa448d8bb3 100644
--- a/include/linux/sizes.h
+++ b/include/linux/sizes.h
@@ -47,6 +47,8 @@
 #define SZ_8G				_AC(0x200000000, ULL)
 #define SZ_16G				_AC(0x400000000, ULL)
 #define SZ_32G				_AC(0x800000000, ULL)
+
+#define SZ_1T				_AC(0x10000000000, ULL)
 #define SZ_64T				_AC(0x400000000000, ULL)
 
 #endif /* __LINUX_SIZES_H__ */
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 841e2f0f5240..3a30cae8b0a5 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -36,6 +36,7 @@
 #include <linux/splice.h>
 #include <linux/in6.h>
 #include <linux/if_packet.h>
+#include <linux/llist.h>
 #include <net/flow.h>
 #include <net/page_pool.h>
 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
@@ -286,14 +287,19 @@ struct nf_bridge_info {
 struct tc_skb_ext {
 	__u32 chain;
 	__u16 mru;
-	bool post_ct;
+	__u16 zone;
+	u8 post_ct:1;
+	u8 post_ct_snat:1;
+	u8 post_ct_dnat:1;
 };
 #endif
 
 struct sk_buff_head {
-	/* These two members must be first. */
-	struct sk_buff	*next;
-	struct sk_buff	*prev;
+	/* These two members must be first to match sk_buff. */
+	struct_group_tagged(sk_buff_list, list,
+		struct sk_buff	*next;
+		struct sk_buff	*prev;
+	);
 
 	__u32		qlen;
 	spinlock_t	lock;
@@ -301,6 +307,146 @@ struct sk_buff_head {
 
 struct sk_buff;
 
+/* The reason of skb drop, which is used in kfree_skb_reason().
+ * en...maybe they should be splited by group?
+ *
+ * Each item here should also be in 'TRACE_SKB_DROP_REASON', which is
+ * used to translate the reason to string.
+ */
+enum skb_drop_reason {
+	SKB_NOT_DROPPED_YET = 0,
+	SKB_DROP_REASON_NOT_SPECIFIED,	/* drop reason is not specified */
+	SKB_DROP_REASON_NO_SOCKET,	/* socket not found */
+	SKB_DROP_REASON_PKT_TOO_SMALL,	/* packet size is too small */
+	SKB_DROP_REASON_TCP_CSUM,	/* TCP checksum error */
+	SKB_DROP_REASON_SOCKET_FILTER,	/* dropped by socket filter */
+	SKB_DROP_REASON_UDP_CSUM,	/* UDP checksum error */
+	SKB_DROP_REASON_NETFILTER_DROP,	/* dropped by netfilter */
+	SKB_DROP_REASON_OTHERHOST,	/* packet don't belong to current
+					 * host (interface is in promisc
+					 * mode)
+					 */
+	SKB_DROP_REASON_IP_CSUM,	/* IP checksum error */
+	SKB_DROP_REASON_IP_INHDR,	/* there is something wrong with
+					 * IP header (see
+					 * IPSTATS_MIB_INHDRERRORS)
+					 */
+	SKB_DROP_REASON_IP_RPFILTER,	/* IP rpfilter validate failed.
+					 * see the document for rp_filter
+					 * in ip-sysctl.rst for more
+					 * information
+					 */
+	SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST, /* destination address of L2
+						  * is multicast, but L3 is
+						  * unicast.
+						  */
+	SKB_DROP_REASON_XFRM_POLICY,	/* xfrm policy check failed */
+	SKB_DROP_REASON_IP_NOPROTO,	/* no support for IP protocol */
+	SKB_DROP_REASON_SOCKET_RCVBUFF,	/* socket receive buff is full */
+	SKB_DROP_REASON_PROTO_MEM,	/* proto memory limition, such as
+					 * udp packet drop out of
+					 * udp_memory_allocated.
+					 */
+	SKB_DROP_REASON_TCP_MD5NOTFOUND,	/* no MD5 hash and one
+						 * expected, corresponding
+						 * to LINUX_MIB_TCPMD5NOTFOUND
+						 */
+	SKB_DROP_REASON_TCP_MD5UNEXPECTED,	/* MD5 hash and we're not
+						 * expecting one, corresponding
+						 * to LINUX_MIB_TCPMD5UNEXPECTED
+						 */
+	SKB_DROP_REASON_TCP_MD5FAILURE,	/* MD5 hash and its wrong,
+					 * corresponding to
+					 * LINUX_MIB_TCPMD5FAILURE
+					 */
+	SKB_DROP_REASON_SOCKET_BACKLOG,	/* failed to add skb to socket
+					 * backlog (see
+					 * LINUX_MIB_TCPBACKLOGDROP)
+					 */
+	SKB_DROP_REASON_TCP_FLAGS,	/* TCP flags invalid */
+	SKB_DROP_REASON_TCP_ZEROWINDOW,	/* TCP receive window size is zero,
+					 * see LINUX_MIB_TCPZEROWINDOWDROP
+					 */
+	SKB_DROP_REASON_TCP_OLD_DATA,	/* the TCP data reveived is already
+					 * received before (spurious retrans
+					 * may happened), see
+					 * LINUX_MIB_DELAYEDACKLOST
+					 */
+	SKB_DROP_REASON_TCP_OVERWINDOW,	/* the TCP data is out of window,
+					 * the seq of the first byte exceed
+					 * the right edges of receive
+					 * window
+					 */
+	SKB_DROP_REASON_TCP_OFOMERGE,	/* the data of skb is already in
+					 * the ofo queue, corresponding to
+					 * LINUX_MIB_TCPOFOMERGE
+					 */
+	SKB_DROP_REASON_IP_OUTNOROUTES,	/* route lookup failed */
+	SKB_DROP_REASON_BPF_CGROUP_EGRESS,	/* dropped by
+						 * BPF_PROG_TYPE_CGROUP_SKB
+						 * eBPF program
+						 */
+	SKB_DROP_REASON_IPV6DISABLED,	/* IPv6 is disabled on the device */
+	SKB_DROP_REASON_NEIGH_CREATEFAIL,	/* failed to create neigh
+						 * entry
+						 */
+	SKB_DROP_REASON_NEIGH_FAILED,	/* neigh entry in failed state */
+	SKB_DROP_REASON_NEIGH_QUEUEFULL,	/* arp_queue for neigh
+						 * entry is full
+						 */
+	SKB_DROP_REASON_NEIGH_DEAD,	/* neigh entry is dead */
+	SKB_DROP_REASON_TC_EGRESS,	/* dropped in TC egress HOOK */
+	SKB_DROP_REASON_QDISC_DROP,	/* dropped by qdisc when packet
+					 * outputting (failed to enqueue to
+					 * current qdisc)
+					 */
+	SKB_DROP_REASON_CPU_BACKLOG,	/* failed to enqueue the skb to
+					 * the per CPU backlog queue. This
+					 * can be caused by backlog queue
+					 * full (see netdev_max_backlog in
+					 * net.rst) or RPS flow limit
+					 */
+	SKB_DROP_REASON_XDP,		/* dropped by XDP in input path */
+	SKB_DROP_REASON_TC_INGRESS,	/* dropped in TC ingress HOOK */
+	SKB_DROP_REASON_PTYPE_ABSENT,	/* not packet_type found to handle
+					 * the skb. For an etner packet,
+					 * this means that L3 protocol is
+					 * not supported
+					 */
+	SKB_DROP_REASON_SKB_CSUM,	/* sk_buff checksum computation
+					 * error
+					 */
+	SKB_DROP_REASON_SKB_GSO_SEG,	/* gso segmentation error */
+	SKB_DROP_REASON_SKB_UCOPY_FAULT,	/* failed to copy data from
+						 * user space, e.g., via
+						 * zerocopy_sg_from_iter()
+						 * or skb_orphan_frags_rx()
+						 */
+	SKB_DROP_REASON_DEV_HDR,	/* device driver specific
+					 * header/metadata is invalid
+					 */
+	/* the device is not ready to xmit/recv due to any of its data
+	 * structure that is not up/ready/initialized, e.g., the IFF_UP is
+	 * not set, or driver specific tun->tfiles[txq] is not initialized
+	 */
+	SKB_DROP_REASON_DEV_READY,
+	SKB_DROP_REASON_FULL_RING,	/* ring buffer is full */
+	SKB_DROP_REASON_NOMEM,		/* error due to OOM */
+	SKB_DROP_REASON_HDR_TRUNC,      /* failed to trunc/extract the header
+					 * from networking data, e.g., failed
+					 * to pull the protocol header from
+					 * frags via pskb_may_pull()
+					 */
+	SKB_DROP_REASON_TAP_FILTER,     /* dropped by (ebpf) filter directly
+					 * attached to tun/tap, e.g., via
+					 * TUNSETFILTEREBPF
+					 */
+	SKB_DROP_REASON_TAP_TXFILTER,	/* dropped by tx filter implemented
+					 * at tun/tap, e.g., check_filter()
+					 */
+	SKB_DROP_REASON_MAX,
+};
+
 /* To allow 64K frame to be packed as single skb without frag_list we
  * require 64K/PAGE_SIZE pages plus 1 additional page to allow for
  * buffers which do not start on a page boundary.
@@ -454,9 +600,15 @@ enum {
 	 * all frags to avoid possible bad checksum
 	 */
 	SKBFL_SHARED_FRAG = BIT(1),
+
+	/* segment contains only zerocopy data and should not be
+	 * charged to the kernel memory.
+	 */
+	SKBFL_PURE_ZEROCOPY = BIT(2),
 };
 
 #define SKBFL_ZEROCOPY_FRAG	(SKBFL_ZEROCOPY_ENABLE | SKBFL_SHARED_FRAG)
+#define SKBFL_ALL_ZEROCOPY	(SKBFL_ZEROCOPY_FRAG | SKBFL_PURE_ZEROCOPY)
 
 /*
  * The callback notifies userspace to release buffers when skb DMA is done in
@@ -529,6 +681,7 @@ struct skb_shared_info {
 	 * Warning : all fields before dataref are cleared in __alloc_skb()
 	 */
 	atomic_t	dataref;
+	unsigned int	xdp_frags_size;
 
 	/* Intermediate layers must ensure that destructor_arg
 	 * remains valid until skb destructor */
@@ -620,6 +773,7 @@ typedef unsigned char *sk_buff_data_t;
  *		for retransmit timer
  *	@rbnode: RB tree node, alternative to next/prev for netem/tcp
  *	@list: queue head
+ *	@ll_node: anchor in an llist (eg socket defer_list)
  *	@sk: Socket we are owned by
  *	@ip_defrag_offset: (aka @sk) alternate use of @sk, used in
  *		fragmentation management
@@ -652,6 +806,7 @@ typedef unsigned char *sk_buff_data_t;
  *	@tc_at_ingress: used within tc_classify to distinguish in/egress
  *	@redirected: packet was redirected by packet classifier
  *	@from_ingress: packet was redirected from the ingress path
+ *	@nf_skip_egress: packet shall skip nf egress - see netfilter_netdev.h
  *	@peeked: this packet has been seen already, so stats have been
  *		done for it, don't do them again
  *	@nf_trace: netfilter packet trace flag
@@ -690,6 +845,10 @@ typedef unsigned char *sk_buff_data_t;
  *	@dst_pending_confirm: need to confirm neighbour
  *	@decrypted: Decrypted SKB
  *	@slow_gro: state present at GRO time, slower prepare step required
+ *	@mono_delivery_time: When set, skb->tstamp has the
+ *		delivery_time in mono clock base (i.e. EDT).  Otherwise, the
+ *		skb->tstamp has the (rcv) timestamp at ingress and
+ *		delivery_time at egress.
  *	@napi_id: id of the NAPI struct this skb came from
  *	@sender_cpu: (aka @napi_id) source CPU in XPS
  *	@secmark: security marking
@@ -721,7 +880,7 @@ typedef unsigned char *sk_buff_data_t;
 struct sk_buff {
 	union {
 		struct {
-			/* These two members must be first. */
+			/* These two members must be first to match sk_buff_head. */
 			struct sk_buff		*next;
 			struct sk_buff		*prev;
 
@@ -736,6 +895,7 @@ struct sk_buff {
 		};
 		struct rb_node		rbnode; /* used in netem, ip4 defrag, and tcp stack */
 		struct list_head	list;
+		struct llist_node	ll_node;
 	};
 
 	union {
@@ -785,7 +945,7 @@ struct sk_buff {
 #else
 #define CLONED_MASK	1
 #endif
-#define CLONED_OFFSET()		offsetof(struct sk_buff, __cloned_offset)
+#define CLONED_OFFSET		offsetof(struct sk_buff, __cloned_offset)
 
 	/* private: */
 	__u8			__cloned_offset[0];
@@ -801,25 +961,15 @@ struct sk_buff {
 	__u8			active_extensions;
 #endif
 
-	/* fields enclosed in headers_start/headers_end are copied
+	/* Fields enclosed in headers group are copied
 	 * using a single memcpy() in __copy_skb_header()
 	 */
-	/* private: */
-	__u32			headers_start[0];
-	/* public: */
-
-/* if you move pkt_type around you also must adapt those constants */
-#ifdef __BIG_ENDIAN_BITFIELD
-#define PKT_TYPE_MAX	(7 << 5)
-#else
-#define PKT_TYPE_MAX	7
-#endif
-#define PKT_TYPE_OFFSET()	offsetof(struct sk_buff, __pkt_type_offset)
+	struct_group(headers,
 
 	/* private: */
 	__u8			__pkt_type_offset[0];
 	/* public: */
-	__u8			pkt_type:3;
+	__u8			pkt_type:3; /* see PKT_TYPE_MAX */
 	__u8			ignore_df:1;
 	__u8			nf_trace:1;
 	__u8			ip_summed:2;
@@ -835,20 +985,18 @@ struct sk_buff {
 	__u8			encap_hdr_csum:1;
 	__u8			csum_valid:1;
 
-#ifdef __BIG_ENDIAN_BITFIELD
-#define PKT_VLAN_PRESENT_BIT	7
-#else
-#define PKT_VLAN_PRESENT_BIT	0
-#endif
-#define PKT_VLAN_PRESENT_OFFSET()	offsetof(struct sk_buff, __pkt_vlan_present_offset)
 	/* private: */
 	__u8			__pkt_vlan_present_offset[0];
 	/* public: */
-	__u8			vlan_present:1;
+	__u8			vlan_present:1;	/* See PKT_VLAN_PRESENT_BIT */
 	__u8			csum_complete_sw:1;
 	__u8			csum_level:2;
-	__u8			csum_not_inet:1;
 	__u8			dst_pending_confirm:1;
+	__u8			mono_delivery_time:1;	/* See SKB_MONO_DELIVERY_TIME_MASK */
+#ifdef CONFIG_NET_CLS_ACT
+	__u8			tc_skip_classify:1;
+	__u8			tc_at_ingress:1;	/* See TC_AT_INGRESS_MASK */
+#endif
 #ifdef CONFIG_IPV6_NDISC_NODETYPE
 	__u8			ndisc_nodetype:2;
 #endif
@@ -860,18 +1008,18 @@ struct sk_buff {
 	__u8			offload_fwd_mark:1;
 	__u8			offload_l3_fwd_mark:1;
 #endif
-#ifdef CONFIG_NET_CLS_ACT
-	__u8			tc_skip_classify:1;
-	__u8			tc_at_ingress:1;
-#endif
 	__u8			redirected:1;
 #ifdef CONFIG_NET_REDIRECT
 	__u8			from_ingress:1;
 #endif
+#ifdef CONFIG_NETFILTER_SKIP_EGRESS
+	__u8			nf_skip_egress:1;
+#endif
 #ifdef CONFIG_TLS_DEVICE
 	__u8			decrypted:1;
 #endif
 	__u8			slow_gro:1;
+	__u8			csum_not_inet:1;
 
 #ifdef CONFIG_NET_SCHED
 	__u16			tc_index;	/* traffic control index */
@@ -922,9 +1070,7 @@ struct sk_buff {
 	u64			kcov_handle;
 #endif
 
-	/* private: */
-	__u32			headers_end[0];
-	/* public: */
+	); /* end headers group */
 
 	/* These elements must be at the end, see alloc_skb() for details.  */
 	sk_buff_data_t		tail;
@@ -940,6 +1086,28 @@ struct sk_buff {
 #endif
 };
 
+/* if you move pkt_type around you also must adapt those constants */
+#ifdef __BIG_ENDIAN_BITFIELD
+#define PKT_TYPE_MAX	(7 << 5)
+#else
+#define PKT_TYPE_MAX	7
+#endif
+#define PKT_TYPE_OFFSET		offsetof(struct sk_buff, __pkt_type_offset)
+
+/* if you move pkt_vlan_present, tc_at_ingress, or mono_delivery_time
+ * around, you also must adapt these constants.
+ */
+#ifdef __BIG_ENDIAN_BITFIELD
+#define PKT_VLAN_PRESENT_BIT	7
+#define TC_AT_INGRESS_MASK		(1 << 0)
+#define SKB_MONO_DELIVERY_TIME_MASK	(1 << 2)
+#else
+#define PKT_VLAN_PRESENT_BIT	0
+#define TC_AT_INGRESS_MASK		(1 << 7)
+#define SKB_MONO_DELIVERY_TIME_MASK	(1 << 5)
+#endif
+#define PKT_VLAN_PRESENT_OFFSET	offsetof(struct sk_buff, __pkt_vlan_present_offset)
+
 #ifdef __KERNEL__
 /*
  *	Handling routines are only of interest to the kernel
@@ -1071,12 +1239,28 @@ static inline bool skb_unref(struct sk_buff *skb)
 	return true;
 }
 
+void kfree_skb_reason(struct sk_buff *skb, enum skb_drop_reason reason);
+
+/**
+ *	kfree_skb - free an sk_buff with 'NOT_SPECIFIED' reason
+ *	@skb: buffer to free
+ */
+static inline void kfree_skb(struct sk_buff *skb)
+{
+	kfree_skb_reason(skb, SKB_DROP_REASON_NOT_SPECIFIED);
+}
+
 void skb_release_head_state(struct sk_buff *skb);
-void kfree_skb(struct sk_buff *skb);
-void kfree_skb_list(struct sk_buff *segs);
+void kfree_skb_list_reason(struct sk_buff *segs,
+			   enum skb_drop_reason reason);
 void skb_dump(const char *level, const struct sk_buff *skb, bool full_pkt);
 void skb_tx_error(struct sk_buff *skb);
 
+static inline void kfree_skb_list(struct sk_buff *segs)
+{
+	kfree_skb_list_reason(segs, SKB_DROP_REASON_NOT_SPECIFIED);
+}
+
 #ifdef CONFIG_TRACEPOINTS
 void consume_skb(struct sk_buff *skb);
 #else
@@ -1370,7 +1554,7 @@ skb_flow_dissect_ct(const struct sk_buff *skb,
 		    struct flow_dissector *flow_dissector,
 		    void *target_container,
 		    u16 *ctinfo_map, size_t mapsize,
-		    bool post_ct);
+		    bool post_ct, u16 zone);
 void
 skb_flow_dissect_tunnel_info(const struct sk_buff *skb,
 			     struct flow_dissector *flow_dissector,
@@ -1433,6 +1617,11 @@ static inline unsigned int skb_end_offset(const struct sk_buff *skb)
 {
 	return skb->end;
 }
+
+static inline void skb_set_end_offset(struct sk_buff *skb, unsigned int offset)
+{
+	skb->end = offset;
+}
 #else
 static inline unsigned char *skb_end_pointer(const struct sk_buff *skb)
 {
@@ -1443,6 +1632,11 @@ static inline unsigned int skb_end_offset(const struct sk_buff *skb)
 {
 	return skb->end - skb->head;
 }
+
+static inline void skb_set_end_offset(struct sk_buff *skb, unsigned int offset)
+{
+	skb->end = skb->head + offset;
+}
 #endif
 
 /* Internal */
@@ -1460,6 +1654,17 @@ static inline struct ubuf_info *skb_zcopy(struct sk_buff *skb)
 	return is_zcopy ? skb_uarg(skb) : NULL;
 }
 
+static inline bool skb_zcopy_pure(const struct sk_buff *skb)
+{
+	return skb_shinfo(skb)->flags & SKBFL_PURE_ZEROCOPY;
+}
+
+static inline bool skb_pure_zcopy_same(const struct sk_buff *skb1,
+				       const struct sk_buff *skb2)
+{
+	return skb_zcopy_pure(skb1) == skb_zcopy_pure(skb2);
+}
+
 static inline void net_zcopy_get(struct ubuf_info *uarg)
 {
 	refcount_inc(&uarg->refcnt);
@@ -1524,7 +1729,7 @@ static inline void skb_zcopy_clear(struct sk_buff *skb, bool zerocopy_success)
 		if (!skb_zcopy_is_nouarg(skb))
 			uarg->callback(skb, uarg, zerocopy_success);
 
-		skb_shinfo(skb)->flags &= ~SKBFL_ZEROCOPY_FRAG;
+		skb_shinfo(skb)->flags &= ~SKBFL_ALL_ZEROCOPY;
 	}
 }
 
@@ -1671,6 +1876,22 @@ static inline int skb_unclone(struct sk_buff *skb, gfp_t pri)
 	return 0;
 }
 
+/* This variant of skb_unclone() makes sure skb->truesize
+ * and skb_end_offset() are not changed, whenever a new skb->head is needed.
+ *
+ * Indeed there is no guarantee that ksize(kmalloc(X)) == ksize(kmalloc(X))
+ * when various debugging features are in place.
+ */
+int __skb_unclone_keeptruesize(struct sk_buff *skb, gfp_t pri);
+static inline int skb_unclone_keeptruesize(struct sk_buff *skb, gfp_t pri)
+{
+	might_sleep_if(gfpflags_allow_blocking(pri));
+
+	if (skb_cloned(skb))
+		return __skb_unclone_keeptruesize(skb, pri);
+	return 0;
+}
+
 /**
  *	skb_header_cloned - is the header a clone
  *	@skb: buffer to check
@@ -1938,8 +2159,8 @@ static inline void __skb_insert(struct sk_buff *newsk,
 	 */
 	WRITE_ONCE(newsk->next, next);
 	WRITE_ONCE(newsk->prev, prev);
-	WRITE_ONCE(next->prev, newsk);
-	WRITE_ONCE(prev->next, newsk);
+	WRITE_ONCE(((struct sk_buff_list *)next)->prev, newsk);
+	WRITE_ONCE(((struct sk_buff_list *)prev)->next, newsk);
 	WRITE_ONCE(list->qlen, list->qlen + 1);
 }
 
@@ -2035,7 +2256,7 @@ static inline void __skb_queue_after(struct sk_buff_head *list,
 				     struct sk_buff *prev,
 				     struct sk_buff *newsk)
 {
-	__skb_insert(newsk, prev, prev->next, list);
+	__skb_insert(newsk, prev, ((struct sk_buff_list *)prev)->next, list);
 }
 
 void skb_append(struct sk_buff *old, struct sk_buff *newsk,
@@ -2045,7 +2266,7 @@ static inline void __skb_queue_before(struct sk_buff_head *list,
 				      struct sk_buff *next,
 				      struct sk_buff *newsk)
 {
-	__skb_insert(newsk, next->prev, next, list);
+	__skb_insert(newsk, ((struct sk_buff_list *)next)->prev, next, list);
 }
 
 /**
@@ -2335,6 +2556,8 @@ static inline void *skb_pull_inline(struct sk_buff *skb, unsigned int len)
 	return unlikely(len > skb->len) ? NULL : __skb_pull(skb, len);
 }
 
+void *skb_pull_data(struct sk_buff *skb, size_t len);
+
 void *__pskb_pull_tail(struct sk_buff *skb, int delta);
 
 static inline void *__pskb_pull(struct sk_buff *skb, unsigned int len)
@@ -3447,7 +3670,12 @@ __skb_postpull_rcsum(struct sk_buff *skb, const void *start, unsigned int len,
 static inline void skb_postpull_rcsum(struct sk_buff *skb,
 				      const void *start, unsigned int len)
 {
-	__skb_postpull_rcsum(skb, start, len, 0);
+	if (skb->ip_summed == CHECKSUM_COMPLETE)
+		skb->csum = wsum_negate(csum_partial(start, len,
+						     wsum_negate(skb->csum)));
+	else if (skb->ip_summed == CHECKSUM_PARTIAL &&
+		 skb_checksum_start_offset(skb) < 0)
+		skb->ip_summed = CHECKSUM_NONE;
 }
 
 static __always_inline void
@@ -3815,6 +4043,7 @@ static inline void skb_get_new_timestampns(const struct sk_buff *skb,
 static inline void __net_timestamp(struct sk_buff *skb)
 {
 	skb->tstamp = ktime_get_real();
+	skb->mono_delivery_time = 0;
 }
 
 static inline ktime_t net_timedelta(ktime_t t)
@@ -3822,8 +4051,53 @@ static inline ktime_t net_timedelta(ktime_t t)
 	return ktime_sub(ktime_get_real(), t);
 }
 
-static inline ktime_t net_invalid_timestamp(void)
+static inline void skb_set_delivery_time(struct sk_buff *skb, ktime_t kt,
+					 bool mono)
 {
+	skb->tstamp = kt;
+	skb->mono_delivery_time = kt && mono;
+}
+
+DECLARE_STATIC_KEY_FALSE(netstamp_needed_key);
+
+/* It is used in the ingress path to clear the delivery_time.
+ * If needed, set the skb->tstamp to the (rcv) timestamp.
+ */
+static inline void skb_clear_delivery_time(struct sk_buff *skb)
+{
+	if (skb->mono_delivery_time) {
+		skb->mono_delivery_time = 0;
+		if (static_branch_unlikely(&netstamp_needed_key))
+			skb->tstamp = ktime_get_real();
+		else
+			skb->tstamp = 0;
+	}
+}
+
+static inline void skb_clear_tstamp(struct sk_buff *skb)
+{
+	if (skb->mono_delivery_time)
+		return;
+
+	skb->tstamp = 0;
+}
+
+static inline ktime_t skb_tstamp(const struct sk_buff *skb)
+{
+	if (skb->mono_delivery_time)
+		return 0;
+
+	return skb->tstamp;
+}
+
+static inline ktime_t skb_tstamp_cond(const struct sk_buff *skb, bool cond)
+{
+	if (!skb->mono_delivery_time && skb->tstamp)
+		return skb->tstamp;
+
+	if (static_branch_unlikely(&netstamp_needed_key) || cond)
+		return ktime_get_real();
+
 	return 0;
 }
 
@@ -4189,7 +4463,7 @@ static inline void skb_remcsum_process(struct sk_buff *skb, void *ptr,
 		return;
 	}
 
-	 if (unlikely(skb->ip_summed != CHECKSUM_COMPLETE)) {
+	if (unlikely(skb->ip_summed != CHECKSUM_COMPLETE)) {
 		__skb_checksum_complete(skb);
 		skb_postpull_rcsum(skb, skb->data, ptr - (void *)skb->data);
 	}
@@ -4240,6 +4514,9 @@ enum skb_ext_id {
 #if IS_ENABLED(CONFIG_MPTCP)
 	SKB_EXT_MPTCP,
 #endif
+#if IS_ENABLED(CONFIG_MCTP_FLOWS)
+	SKB_EXT_MCTP,
+#endif
 	SKB_EXT_NUM, /* must be last */
 };
 
@@ -4680,7 +4957,7 @@ static inline void skb_set_redirected(struct sk_buff *skb, bool from_ingress)
 #ifdef CONFIG_NET_REDIRECT
 	skb->from_ingress = from_ingress;
 	if (skb->from_ingress)
-		skb->tstamp = 0;
+		skb_clear_tstamp(skb);
 #endif
 }
 
diff --git a/include/linux/skmsg.h b/include/linux/skmsg.h
index 1ce9a9eb223b..c5a2d6f50f25 100644
--- a/include/linux/skmsg.h
+++ b/include/linux/skmsg.h
@@ -29,7 +29,7 @@ struct sk_msg_sg {
 	u32				end;
 	u32				size;
 	u32				copybreak;
-	unsigned long			copy;
+	DECLARE_BITMAP(copy, MAX_MSG_FRAGS + 2);
 	/* The extra two elements:
 	 * 1) used for chaining the front and sections when the list becomes
 	 *    partitioned (e.g. end < start). The crypto APIs require the
@@ -38,7 +38,6 @@ struct sk_msg_sg {
 	 */
 	struct scatterlist		data[MAX_MSG_FRAGS + 2];
 };
-static_assert(BITS_PER_LONG >= NR_MSG_FRAG_IDS);
 
 /* UAPI in filter.c depends on struct sk_msg_sg being first element. */
 struct sk_msg {
@@ -171,11 +170,6 @@ static inline u32 sk_msg_iter_dist(u32 start, u32 end)
 #define sk_msg_iter_next(msg, which)			\
 	sk_msg_iter_var_next(msg->sg.which)
 
-static inline void sk_msg_clear_meta(struct sk_msg *msg)
-{
-	memset(&msg->sg, 0, offsetofend(struct sk_msg_sg, copy));
-}
-
 static inline void sk_msg_init(struct sk_msg *msg)
 {
 	BUILD_BUG_ON(ARRAY_SIZE(msg->sg.data) - 1 != NR_MSG_FRAG_IDS);
@@ -234,7 +228,7 @@ static inline void sk_msg_compute_data_pointers(struct sk_msg *msg)
 {
 	struct scatterlist *sge = sk_msg_elem(msg, msg->sg.start);
 
-	if (test_bit(msg->sg.start, &msg->sg.copy)) {
+	if (test_bit(msg->sg.start, msg->sg.copy)) {
 		msg->data = NULL;
 		msg->data_end = NULL;
 	} else {
@@ -253,7 +247,7 @@ static inline void sk_msg_page_add(struct sk_msg *msg, struct page *page,
 	sg_set_page(sge, page, len, offset);
 	sg_unmark_end(sge);
 
-	__set_bit(msg->sg.end, &msg->sg.copy);
+	__set_bit(msg->sg.end, msg->sg.copy);
 	msg->sg.size += len;
 	sk_msg_iter_next(msg, end);
 }
@@ -262,9 +256,9 @@ static inline void sk_msg_sg_copy(struct sk_msg *msg, u32 i, bool copy_state)
 {
 	do {
 		if (copy_state)
-			__set_bit(i, &msg->sg.copy);
+			__set_bit(i, msg->sg.copy);
 		else
-			__clear_bit(i, &msg->sg.copy);
+			__clear_bit(i, msg->sg.copy);
 		sk_msg_iter_var_next(i);
 		if (i == msg->sg.end)
 			break;
@@ -310,21 +304,16 @@ static inline void sock_drop(struct sock *sk, struct sk_buff *skb)
 	kfree_skb(skb);
 }
 
-static inline void drop_sk_msg(struct sk_psock *psock, struct sk_msg *msg)
-{
-	if (msg->skb)
-		sock_drop(psock->sk, msg->skb);
-	kfree(msg);
-}
-
 static inline void sk_psock_queue_msg(struct sk_psock *psock,
 				      struct sk_msg *msg)
 {
 	spin_lock_bh(&psock->ingress_lock);
 	if (sk_psock_test_state(psock, SK_PSOCK_TX_ENABLED))
 		list_add_tail(&msg->list, &psock->ingress_msg);
-	else
-		drop_sk_msg(psock, msg);
+	else {
+		sk_msg_free(psock->sk, msg);
+		kfree(msg);
+	}
 	spin_unlock_bh(&psock->ingress_lock);
 }
 
@@ -507,10 +496,30 @@ static inline bool sk_psock_strp_enabled(struct sk_psock *psock)
 	return !!psock->saved_data_ready;
 }
 
+static inline bool sk_is_udp(const struct sock *sk)
+{
+	return sk->sk_type == SOCK_DGRAM &&
+	       sk->sk_protocol == IPPROTO_UDP;
+}
+
 #if IS_ENABLED(CONFIG_NET_SOCK_MSG)
 
-/* We only have one bit so far. */
-#define BPF_F_PTR_MASK ~(BPF_F_INGRESS)
+#define BPF_F_STRPARSER	(1UL << 1)
+
+/* We only have two bits so far. */
+#define BPF_F_PTR_MASK ~(BPF_F_INGRESS | BPF_F_STRPARSER)
+
+static inline bool skb_bpf_strparser(const struct sk_buff *skb)
+{
+	unsigned long sk_redir = skb->_sk_redir;
+
+	return sk_redir & BPF_F_STRPARSER;
+}
+
+static inline void skb_bpf_set_strparser(struct sk_buff *skb)
+{
+	skb->_sk_redir |= BPF_F_STRPARSER;
+}
 
 static inline bool skb_bpf_ingress(const struct sk_buff *skb)
 {
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 083f3ce550bc..373b3ef99f4e 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -117,9 +117,6 @@
 #define SLAB_RECLAIM_ACCOUNT	((slab_flags_t __force)0x00020000U)
 #define SLAB_TEMPORARY		SLAB_RECLAIM_ACCOUNT	/* Objects are short-lived */
 
-/* Slab deactivation flag */
-#define SLAB_DEACTIVATED	((slab_flags_t __force)0x10000000U)
-
 /*
  * ZERO_SIZE_PTR will be returned for zero sized kmalloc requests.
  *
@@ -135,6 +132,7 @@
 
 #include <linux/kasan.h>
 
+struct list_lru;
 struct mem_cgroup;
 /*
  * struct kmem_cache related prototypes
@@ -142,8 +140,6 @@ struct mem_cgroup;
 void __init kmem_cache_init(void);
 bool slab_is_available(void);
 
-extern bool usercopy_fallback;
-
 struct kmem_cache *kmem_cache_create(const char *name, unsigned int size,
 			unsigned int align, slab_flags_t flags,
 			void (*ctor)(void *));
@@ -152,8 +148,8 @@ struct kmem_cache *kmem_cache_create_usercopy(const char *name,
 			slab_flags_t flags,
 			unsigned int useroffset, unsigned int usersize,
 			void (*ctor)(void *));
-void kmem_cache_destroy(struct kmem_cache *);
-int kmem_cache_shrink(struct kmem_cache *);
+void kmem_cache_destroy(struct kmem_cache *s);
+int kmem_cache_shrink(struct kmem_cache *s);
 
 /*
  * Please use this macro to create slab caches. Simply specify the
@@ -181,24 +177,16 @@ int kmem_cache_shrink(struct kmem_cache *);
 /*
  * Common kmalloc functions provided by all allocators
  */
-void * __must_check krealloc(const void *, size_t, gfp_t);
-void kfree(const void *);
-void kfree_sensitive(const void *);
-size_t __ksize(const void *);
-size_t ksize(const void *);
+void * __must_check krealloc(const void *objp, size_t new_size, gfp_t flags) __alloc_size(2);
+void kfree(const void *objp);
+void kfree_sensitive(const void *objp);
+size_t __ksize(const void *objp);
+size_t ksize(const void *objp);
 #ifdef CONFIG_PRINTK
 bool kmem_valid_obj(void *object);
 void kmem_dump_obj(void *object);
 #endif
 
-#ifdef CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR
-void __check_heap_object(const void *ptr, unsigned long n, struct page *page,
-			bool to_user);
-#else
-static inline void __check_heap_object(const void *ptr, unsigned long n,
-				       struct page *page, bool to_user) { }
-#endif
-
 /*
  * Some archs want to perform DMA into kmalloc caches and need a guaranteed
  * alignment larger than the alignment of a 64-bit integer.
@@ -413,8 +401,7 @@ static __always_inline unsigned int __kmalloc_index(size_t size,
 	if (size <=  16 * 1024 * 1024) return 24;
 	if (size <=  32 * 1024 * 1024) return 25;
 
-	if ((IS_ENABLED(CONFIG_CC_IS_GCC) || CONFIG_CLANG_VERSION >= 110000)
-	    && !IS_ENABLED(CONFIG_PROFILE_ALL_BRANCHES) && size_is_constant)
+	if (!IS_ENABLED(CONFIG_PROFILE_ALL_BRANCHES) && size_is_constant)
 		BUILD_BUG_ON_MSG(1, "unexpected size in kmalloc_index()");
 	else
 		BUG();
@@ -425,9 +412,11 @@ static __always_inline unsigned int __kmalloc_index(size_t size,
 #define kmalloc_index(s) __kmalloc_index(s, true)
 #endif /* !CONFIG_SLOB */
 
-void *__kmalloc(size_t size, gfp_t flags) __assume_kmalloc_alignment __malloc;
-void *kmem_cache_alloc(struct kmem_cache *, gfp_t flags) __assume_slab_alignment __malloc;
-void kmem_cache_free(struct kmem_cache *, void *);
+void *__kmalloc(size_t size, gfp_t flags) __assume_kmalloc_alignment __alloc_size(1);
+void *kmem_cache_alloc(struct kmem_cache *s, gfp_t flags) __assume_slab_alignment __malloc;
+void *kmem_cache_alloc_lru(struct kmem_cache *s, struct list_lru *lru,
+			   gfp_t gfpflags) __assume_slab_alignment __malloc;
+void kmem_cache_free(struct kmem_cache *s, void *objp);
 
 /*
  * Bulk allocation and freeing operations. These are accelerated in an
@@ -436,8 +425,8 @@ void kmem_cache_free(struct kmem_cache *, void *);
  *
  * Note that interrupts must be enabled when calling these functions.
  */
-void kmem_cache_free_bulk(struct kmem_cache *, size_t, void **);
-int kmem_cache_alloc_bulk(struct kmem_cache *, gfp_t, size_t, void **);
+void kmem_cache_free_bulk(struct kmem_cache *s, size_t size, void **p);
+int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size, void **p);
 
 /*
  * Caller must not use kfree_bulk() on memory not originally allocated
@@ -449,10 +438,12 @@ static __always_inline void kfree_bulk(size_t size, void **p)
 }
 
 #ifdef CONFIG_NUMA
-void *__kmalloc_node(size_t size, gfp_t flags, int node) __assume_kmalloc_alignment __malloc;
-void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node) __assume_slab_alignment __malloc;
+void *__kmalloc_node(size_t size, gfp_t flags, int node) __assume_kmalloc_alignment
+							 __alloc_size(1);
+void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t flags, int node) __assume_slab_alignment
+									 __malloc;
 #else
-static __always_inline void *__kmalloc_node(size_t size, gfp_t flags, int node)
+static __always_inline __alloc_size(1) void *__kmalloc_node(size_t size, gfp_t flags, int node)
 {
 	return __kmalloc(size, flags);
 }
@@ -464,25 +455,24 @@ static __always_inline void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t f
 #endif
 
 #ifdef CONFIG_TRACING
-extern void *kmem_cache_alloc_trace(struct kmem_cache *, gfp_t, size_t) __assume_slab_alignment __malloc;
+extern void *kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t flags, size_t size)
+				   __assume_slab_alignment __alloc_size(3);
 
 #ifdef CONFIG_NUMA
-extern void *kmem_cache_alloc_node_trace(struct kmem_cache *s,
-					   gfp_t gfpflags,
-					   int node, size_t size) __assume_slab_alignment __malloc;
+extern void *kmem_cache_alloc_node_trace(struct kmem_cache *s, gfp_t gfpflags,
+					 int node, size_t size) __assume_slab_alignment
+								__alloc_size(4);
 #else
-static __always_inline void *
-kmem_cache_alloc_node_trace(struct kmem_cache *s,
-			      gfp_t gfpflags,
-			      int node, size_t size)
+static __always_inline __alloc_size(4) void *kmem_cache_alloc_node_trace(struct kmem_cache *s,
+						 gfp_t gfpflags, int node, size_t size)
 {
 	return kmem_cache_alloc_trace(s, gfpflags, size);
 }
 #endif /* CONFIG_NUMA */
 
 #else /* CONFIG_TRACING */
-static __always_inline void *kmem_cache_alloc_trace(struct kmem_cache *s,
-		gfp_t flags, size_t size)
+static __always_inline __alloc_size(3) void *kmem_cache_alloc_trace(struct kmem_cache *s,
+								    gfp_t flags, size_t size)
 {
 	void *ret = kmem_cache_alloc(s, flags);
 
@@ -490,10 +480,8 @@ static __always_inline void *kmem_cache_alloc_trace(struct kmem_cache *s,
 	return ret;
 }
 
-static __always_inline void *
-kmem_cache_alloc_node_trace(struct kmem_cache *s,
-			      gfp_t gfpflags,
-			      int node, size_t size)
+static __always_inline void *kmem_cache_alloc_node_trace(struct kmem_cache *s, gfp_t gfpflags,
+							 int node, size_t size)
 {
 	void *ret = kmem_cache_alloc_node(s, gfpflags, node);
 
@@ -502,19 +490,21 @@ kmem_cache_alloc_node_trace(struct kmem_cache *s,
 }
 #endif /* CONFIG_TRACING */
 
-extern void *kmalloc_order(size_t size, gfp_t flags, unsigned int order) __assume_page_alignment __malloc;
+extern void *kmalloc_order(size_t size, gfp_t flags, unsigned int order) __assume_page_alignment
+									 __alloc_size(1);
 
 #ifdef CONFIG_TRACING
-extern void *kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order) __assume_page_alignment __malloc;
+extern void *kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order)
+				__assume_page_alignment __alloc_size(1);
 #else
-static __always_inline void *
-kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order)
+static __always_inline __alloc_size(1) void *kmalloc_order_trace(size_t size, gfp_t flags,
+								 unsigned int order)
 {
 	return kmalloc_order(size, flags, order);
 }
 #endif
 
-static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
+static __always_inline __alloc_size(1) void *kmalloc_large(size_t size, gfp_t flags)
 {
 	unsigned int order = get_order(size);
 	return kmalloc_order_trace(size, flags, order);
@@ -574,7 +564,7 @@ static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
  *	Try really hard to succeed the allocation but fail
  *	eventually.
  */
-static __always_inline void *kmalloc(size_t size, gfp_t flags)
+static __always_inline __alloc_size(1) void *kmalloc(size_t size, gfp_t flags)
 {
 	if (__builtin_constant_p(size)) {
 #ifndef CONFIG_SLOB
@@ -596,7 +586,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags)
 	return __kmalloc(size, flags);
 }
 
-static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
+static __always_inline __alloc_size(1) void *kmalloc_node(size_t size, gfp_t flags, int node)
 {
 #ifndef CONFIG_SLOB
 	if (__builtin_constant_p(size) &&
@@ -620,7 +610,7 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
  * @size: element size.
  * @flags: the type of memory to allocate (see kmalloc).
  */
-static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags)
+static inline __alloc_size(1, 2) void *kmalloc_array(size_t n, size_t size, gfp_t flags)
 {
 	size_t bytes;
 
@@ -638,8 +628,10 @@ static inline void *kmalloc_array(size_t n, size_t size, gfp_t flags)
  * @new_size: new size of a single member of the array
  * @flags: the type of memory to allocate (see kmalloc)
  */
-static __must_check inline void *
-krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t flags)
+static inline __alloc_size(2, 3) void * __must_check krealloc_array(void *p,
+								    size_t new_n,
+								    size_t new_size,
+								    gfp_t flags)
 {
 	size_t bytes;
 
@@ -655,7 +647,7 @@ krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t flags)
  * @size: element size.
  * @flags: the type of memory to allocate (see kmalloc).
  */
-static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
+static inline __alloc_size(1, 2) void *kcalloc(size_t n, size_t size, gfp_t flags)
 {
 	return kmalloc_array(n, size, flags | __GFP_ZERO);
 }
@@ -668,12 +660,12 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags)
  * allocator where we care about the real place the memory allocation
  * request comes from.
  */
-extern void *__kmalloc_track_caller(size_t, gfp_t, unsigned long);
+extern void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller);
 #define kmalloc_track_caller(size, flags) \
 	__kmalloc_track_caller(size, flags, _RET_IP_)
 
-static inline void *kmalloc_array_node(size_t n, size_t size, gfp_t flags,
-				       int node)
+static inline __alloc_size(1, 2) void *kmalloc_array_node(size_t n, size_t size, gfp_t flags,
+							  int node)
 {
 	size_t bytes;
 
@@ -684,14 +676,15 @@ static inline void *kmalloc_array_node(size_t n, size_t size, gfp_t flags,
 	return __kmalloc_node(bytes, flags, node);
 }
 
-static inline void *kcalloc_node(size_t n, size_t size, gfp_t flags, int node)
+static inline __alloc_size(1, 2) void *kcalloc_node(size_t n, size_t size, gfp_t flags, int node)
 {
 	return kmalloc_array_node(n, size, flags | __GFP_ZERO, node);
 }
 
 
 #ifdef CONFIG_NUMA
-extern void *__kmalloc_node_track_caller(size_t, gfp_t, int, unsigned long);
+extern void *__kmalloc_node_track_caller(size_t size, gfp_t flags, int node,
+					 unsigned long caller) __alloc_size(1);
 #define kmalloc_node_track_caller(size, flags, node) \
 	__kmalloc_node_track_caller(size, flags, node, \
 			_RET_IP_)
@@ -716,7 +709,7 @@ static inline void *kmem_cache_zalloc(struct kmem_cache *k, gfp_t flags)
  * @size: how many bytes of memory are required.
  * @flags: the type of memory to allocate (see kmalloc).
  */
-static inline void *kzalloc(size_t size, gfp_t flags)
+static inline __alloc_size(1) void *kzalloc(size_t size, gfp_t flags)
 {
 	return kmalloc(size, flags | __GFP_ZERO);
 }
@@ -727,11 +720,45 @@ static inline void *kzalloc(size_t size, gfp_t flags)
  * @flags: the type of memory to allocate (see kmalloc).
  * @node: memory node from which to allocate
  */
-static inline void *kzalloc_node(size_t size, gfp_t flags, int node)
+static inline __alloc_size(1) void *kzalloc_node(size_t size, gfp_t flags, int node)
 {
 	return kmalloc_node(size, flags | __GFP_ZERO, node);
 }
 
+extern void *kvmalloc_node(size_t size, gfp_t flags, int node) __alloc_size(1);
+static inline __alloc_size(1) void *kvmalloc(size_t size, gfp_t flags)
+{
+	return kvmalloc_node(size, flags, NUMA_NO_NODE);
+}
+static inline __alloc_size(1) void *kvzalloc_node(size_t size, gfp_t flags, int node)
+{
+	return kvmalloc_node(size, flags | __GFP_ZERO, node);
+}
+static inline __alloc_size(1) void *kvzalloc(size_t size, gfp_t flags)
+{
+	return kvmalloc(size, flags | __GFP_ZERO);
+}
+
+static inline __alloc_size(1, 2) void *kvmalloc_array(size_t n, size_t size, gfp_t flags)
+{
+	size_t bytes;
+
+	if (unlikely(check_mul_overflow(n, size, &bytes)))
+		return NULL;
+
+	return kvmalloc(bytes, flags);
+}
+
+static inline __alloc_size(1, 2) void *kvcalloc(size_t n, size_t size, gfp_t flags)
+{
+	return kvmalloc_array(n, size, flags | __GFP_ZERO);
+}
+
+extern void *kvrealloc(const void *p, size_t oldsize, size_t newsize, gfp_t flags)
+		      __alloc_size(3);
+extern void kvfree(const void *addr);
+extern void kvfree_sensitive(const void *addr, size_t len);
+
 unsigned int kmem_cache_size(struct kmem_cache *s);
 void __init kmem_cache_init_late(void);
 
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 3aa5e1e73ab6..e24c9aff6fed 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -87,11 +87,11 @@ struct kmem_cache {
 	struct kmem_cache_node *node[MAX_NUMNODES];
 };
 
-static inline void *nearest_obj(struct kmem_cache *cache, struct page *page,
+static inline void *nearest_obj(struct kmem_cache *cache, const struct slab *slab,
 				void *x)
 {
-	void *object = x - (x - page->s_mem) % cache->size;
-	void *last_object = page->s_mem + (cache->num - 1) * cache->size;
+	void *object = x - (x - slab->s_mem) % cache->size;
+	void *last_object = slab->s_mem + (cache->num - 1) * cache->size;
 
 	if (unlikely(object > last_object))
 		return last_object;
@@ -106,16 +106,16 @@ static inline void *nearest_obj(struct kmem_cache *cache, struct page *page,
  *   reciprocal_divide(offset, cache->reciprocal_buffer_size)
  */
 static inline unsigned int obj_to_index(const struct kmem_cache *cache,
-					const struct page *page, void *obj)
+					const struct slab *slab, void *obj)
 {
-	u32 offset = (obj - page->s_mem);
+	u32 offset = (obj - slab->s_mem);
 	return reciprocal_divide(offset, cache->reciprocal_buffer_size);
 }
 
-static inline int objs_per_slab_page(const struct kmem_cache *cache,
-				     const struct page *page)
+static inline int objs_per_slab(const struct kmem_cache *cache,
+				     const struct slab *slab)
 {
-	if (is_kfence_address(page_address(page)))
+	if (is_kfence_address(slab_address(slab)))
 		return 1;
 	return cache->num;
 }
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 85499f0586b0..33c5c0e3bd8d 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -48,9 +48,9 @@ enum stat_item {
 struct kmem_cache_cpu {
 	void **freelist;	/* Pointer to next available object */
 	unsigned long tid;	/* Globally unique transaction id */
-	struct page *page;	/* The slab from which we are allocating */
+	struct slab *slab;	/* The slab from which we are allocating */
 #ifdef CONFIG_SLUB_CPU_PARTIAL
-	struct page *partial;	/* Partially allocated frozen slabs */
+	struct slab *partial;	/* Partially allocated frozen slabs */
 #endif
 	local_lock_t lock;	/* Protects the fields above */
 #ifdef CONFIG_SLUB_STATS
@@ -99,6 +99,8 @@ struct kmem_cache {
 #ifdef CONFIG_SLUB_CPU_PARTIAL
 	/* Number of per cpu partial objects to keep around */
 	unsigned int cpu_partial;
+	/* Number of per cpu partial slabs to keep around */
+	unsigned int cpu_partial_slabs;
 #endif
 	struct kmem_cache_order_objects oo;
 
@@ -141,17 +143,6 @@ struct kmem_cache {
 	struct kmem_cache_node *node[MAX_NUMNODES];
 };
 
-#ifdef CONFIG_SLUB_CPU_PARTIAL
-#define slub_cpu_partial(s)		((s)->cpu_partial)
-#define slub_set_cpu_partial(s, n)		\
-({						\
-	slub_cpu_partial(s) = (n);		\
-})
-#else
-#define slub_cpu_partial(s)		(0)
-#define slub_set_cpu_partial(s, n)
-#endif /* CONFIG_SLUB_CPU_PARTIAL */
-
 #ifdef CONFIG_SYSFS
 #define SLAB_SUPPORTS_SYSFS
 void sysfs_slab_unlink(struct kmem_cache *);
@@ -165,16 +156,13 @@ static inline void sysfs_slab_release(struct kmem_cache *s)
 }
 #endif
 
-void object_err(struct kmem_cache *s, struct page *page,
-		u8 *object, char *reason);
-
 void *fixup_red_left(struct kmem_cache *s, void *p);
 
-static inline void *nearest_obj(struct kmem_cache *cache, struct page *page,
+static inline void *nearest_obj(struct kmem_cache *cache, const struct slab *slab,
 				void *x) {
-	void *object = x - (x - page_address(page)) % cache->size;
-	void *last_object = page_address(page) +
-		(page->objects - 1) * cache->size;
+	void *object = x - (x - slab_address(slab)) % cache->size;
+	void *last_object = slab_address(slab) +
+		(slab->objects - 1) * cache->size;
 	void *result = (unlikely(object > last_object)) ? last_object : object;
 
 	result = fixup_red_left(cache, result);
@@ -190,16 +178,16 @@ static inline unsigned int __obj_to_index(const struct kmem_cache *cache,
 }
 
 static inline unsigned int obj_to_index(const struct kmem_cache *cache,
-					const struct page *page, void *obj)
+					const struct slab *slab, void *obj)
 {
 	if (is_kfence_address(obj))
 		return 0;
-	return __obj_to_index(cache, page_address(page), obj);
+	return __obj_to_index(cache, slab_address(slab), obj);
 }
 
-static inline int objs_per_slab_page(const struct kmem_cache *cache,
-				     const struct page *page)
+static inline int objs_per_slab(const struct kmem_cache *cache,
+				     const struct slab *slab)
 {
-	return page->objects;
+	return slab->objects;
 }
 #endif /* _LINUX_SLUB_DEF_H */
diff --git a/include/linux/smp.h b/include/linux/smp.h
index 510519e8a1eb..a80ab58ae3f1 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -108,7 +108,6 @@ static inline void on_each_cpu_cond(smp_cond_func_t cond_func,
 #ifdef CONFIG_SMP
 
 #include <linux/preempt.h>
-#include <linux/kernel.h>
 #include <linux/compiler.h>
 #include <linux/thread_info.h>
 #include <asm/smp.h>
diff --git a/include/linux/soc/ixp4xx/cpu.h b/include/linux/soc/ixp4xx/cpu.h
index 88bd8de0e803..f526ac33afea 100644
--- a/include/linux/soc/ixp4xx/cpu.h
+++ b/include/linux/soc/ixp4xx/cpu.h
@@ -9,6 +9,7 @@
 #define __SOC_IXP4XX_CPU_H__
 
 #include <linux/io.h>
+#include <linux/regmap.h>
 #ifdef CONFIG_ARM
 #include <asm/cputype.h>
 #endif
@@ -23,6 +24,9 @@
 #define IXP46X_PROCESSOR_ID_VALUE	0x69054200 /* including IXP455 */
 #define IXP46X_PROCESSOR_ID_MASK	0xfffffff0
 
+/* Feature register in the expansion bus controller */
+#define IXP4XX_EXP_CNFG2		0x2c
+
 /* "fuse" bits of IXP_EXP_CFG2 */
 /* All IXP4xx CPUs */
 #define IXP4XX_FEATURE_RCOMP		(1 << 0)
@@ -86,21 +90,31 @@
 			 IXP43X_PROCESSOR_ID_VALUE)
 #define cpu_is_ixp46x()	((read_cpuid_id() & IXP46X_PROCESSOR_ID_MASK) == \
 			 IXP46X_PROCESSOR_ID_VALUE)
+static inline u32 cpu_ixp4xx_features(struct regmap *rmap)
+{
+	u32 val;
 
-u32 ixp4xx_read_feature_bits(void);
-void ixp4xx_write_feature_bits(u32 value);
+	regmap_read(rmap, IXP4XX_EXP_CNFG2, &val);
+	/* For some reason this register is inverted */
+	val = ~val;
+	if (cpu_is_ixp42x_rev_a0())
+		return IXP42X_FEATURE_MASK & ~(IXP4XX_FEATURE_RCOMP |
+					       IXP4XX_FEATURE_AES);
+	if (cpu_is_ixp42x())
+		return val & IXP42X_FEATURE_MASK;
+	if (cpu_is_ixp43x())
+		return val & IXP43X_FEATURE_MASK;
+	return val & IXP46X_FEATURE_MASK;
+}
 #else
 #define cpu_is_ixp42x_rev_a0()		0
 #define cpu_is_ixp42x()			0
 #define cpu_is_ixp43x()			0
 #define cpu_is_ixp46x()			0
-static inline u32 ixp4xx_read_feature_bits(void)
+static inline u32 cpu_ixp4xx_features(struct regmap *rmap)
 {
 	return 0;
 }
-static inline void ixp4xx_write_feature_bits(u32 value)
-{
-}
 #endif
 
 #endif  /* _ASM_ARCH_CPU_H */
diff --git a/include/linux/soc/ixp4xx/npe.h b/include/linux/soc/ixp4xx/npe.h
index 2a91f465d456..9efeac777da1 100644
--- a/include/linux/soc/ixp4xx/npe.h
+++ b/include/linux/soc/ixp4xx/npe.h
@@ -3,6 +3,7 @@
 #define __IXP4XX_NPE_H
 
 #include <linux/kernel.h>
+#include <linux/regmap.h>
 
 extern const char *npe_names[];
 
@@ -17,6 +18,7 @@ struct npe_regs {
 
 struct npe {
 	struct npe_regs __iomem *regs;
+	struct regmap *rmap;
 	int id;
 	int valid;
 };
diff --git a/include/linux/soc/marvell/octeontx2/asm.h b/include/linux/soc/marvell/octeontx2/asm.h
index fa1d6af0164e..d683251a0b40 100644
--- a/include/linux/soc/marvell/octeontx2/asm.h
+++ b/include/linux/soc/marvell/octeontx2/asm.h
@@ -5,6 +5,7 @@
 #ifndef __SOC_OTX2_ASM_H
 #define __SOC_OTX2_ASM_H
 
+#include <linux/types.h>
 #if defined(CONFIG_ARM64)
 /*
  * otx2_lmt_flush is used for LMT store operation.
@@ -34,9 +35,23 @@
 			 : [rf] "+r"(val)		\
 			 : [rs] "r"(addr));		\
 })
+
+static inline u64 otx2_atomic64_fetch_add(u64 incr, u64 *ptr)
+{
+	u64 result;
+
+	asm volatile (".cpu  generic+lse\n"
+		      "ldadda %x[i], %x[r], [%[b]]"
+		      : [r] "=r" (result), "+m" (*ptr)
+		      : [i] "r" (incr), [b] "r" (ptr)
+		      : "memory");
+	return result;
+}
+
 #else
 #define otx2_lmt_flush(ioaddr)          ({ 0; })
 #define cn10k_lmt_flush(val, addr)	({ addr = val; })
+#define otx2_atomic64_fetch_add(incr, ptr)	({ incr; })
 #endif
 
 #endif /* __SOC_OTX2_ASM_H */
diff --git a/include/linux/soc/mediatek/infracfg.h b/include/linux/soc/mediatek/infracfg.h
index 4615a228da51..50804ac748bd 100644
--- a/include/linux/soc/mediatek/infracfg.h
+++ b/include/linux/soc/mediatek/infracfg.h
@@ -2,6 +2,88 @@
 #ifndef __SOC_MEDIATEK_INFRACFG_H
 #define __SOC_MEDIATEK_INFRACFG_H
 
+#define MT8195_TOP_AXI_PROT_EN_STA1                     0x228
+#define MT8195_TOP_AXI_PROT_EN_1_STA1                   0x258
+#define MT8195_TOP_AXI_PROT_EN_SET			0x2a0
+#define MT8195_TOP_AXI_PROT_EN_CLR                      0x2a4
+#define MT8195_TOP_AXI_PROT_EN_1_SET                    0x2a8
+#define MT8195_TOP_AXI_PROT_EN_1_CLR                    0x2ac
+#define MT8195_TOP_AXI_PROT_EN_MM_SET                   0x2d4
+#define MT8195_TOP_AXI_PROT_EN_MM_CLR                   0x2d8
+#define MT8195_TOP_AXI_PROT_EN_MM_STA1                  0x2ec
+#define MT8195_TOP_AXI_PROT_EN_2_SET                    0x714
+#define MT8195_TOP_AXI_PROT_EN_2_CLR                    0x718
+#define MT8195_TOP_AXI_PROT_EN_2_STA1                   0x724
+#define MT8195_TOP_AXI_PROT_EN_VDNR_SET                 0xb84
+#define MT8195_TOP_AXI_PROT_EN_VDNR_CLR                 0xb88
+#define MT8195_TOP_AXI_PROT_EN_VDNR_STA1                0xb90
+#define MT8195_TOP_AXI_PROT_EN_VDNR_1_SET               0xba4
+#define MT8195_TOP_AXI_PROT_EN_VDNR_1_CLR               0xba8
+#define MT8195_TOP_AXI_PROT_EN_VDNR_1_STA1              0xbb0
+#define MT8195_TOP_AXI_PROT_EN_VDNR_2_SET               0xbb8
+#define MT8195_TOP_AXI_PROT_EN_VDNR_2_CLR               0xbbc
+#define MT8195_TOP_AXI_PROT_EN_VDNR_2_STA1              0xbc4
+#define MT8195_TOP_AXI_PROT_EN_SUB_INFRA_VDNR_SET       0xbcc
+#define MT8195_TOP_AXI_PROT_EN_SUB_INFRA_VDNR_CLR       0xbd0
+#define MT8195_TOP_AXI_PROT_EN_SUB_INFRA_VDNR_STA1      0xbd8
+#define MT8195_TOP_AXI_PROT_EN_MM_2_SET                 0xdcc
+#define MT8195_TOP_AXI_PROT_EN_MM_2_CLR                 0xdd0
+#define MT8195_TOP_AXI_PROT_EN_MM_2_STA1                0xdd8
+
+#define MT8195_TOP_AXI_PROT_EN_VDOSYS0			BIT(6)
+#define MT8195_TOP_AXI_PROT_EN_VPPSYS0			BIT(10)
+#define MT8195_TOP_AXI_PROT_EN_MFG1			BIT(11)
+#define MT8195_TOP_AXI_PROT_EN_MFG1_2ND			GENMASK(22, 21)
+#define MT8195_TOP_AXI_PROT_EN_VPPSYS0_2ND		BIT(23)
+#define MT8195_TOP_AXI_PROT_EN_1_MFG1			GENMASK(20, 19)
+#define MT8195_TOP_AXI_PROT_EN_1_CAM			BIT(22)
+#define MT8195_TOP_AXI_PROT_EN_2_CAM			BIT(0)
+#define MT8195_TOP_AXI_PROT_EN_2_MFG1_2ND		GENMASK(6, 5)
+#define MT8195_TOP_AXI_PROT_EN_2_MFG1			BIT(7)
+#define MT8195_TOP_AXI_PROT_EN_2_AUDIO			(BIT(9) | BIT(11))
+#define MT8195_TOP_AXI_PROT_EN_2_ADSP			(BIT(12) | GENMASK(16, 14))
+#define MT8195_TOP_AXI_PROT_EN_MM_CAM			(BIT(0) | BIT(2) | BIT(4))
+#define MT8195_TOP_AXI_PROT_EN_MM_IPE			BIT(1)
+#define MT8195_TOP_AXI_PROT_EN_MM_IMG			BIT(3)
+#define MT8195_TOP_AXI_PROT_EN_MM_VDOSYS0		GENMASK(21, 17)
+#define MT8195_TOP_AXI_PROT_EN_MM_VPPSYS1		GENMASK(8, 5)
+#define MT8195_TOP_AXI_PROT_EN_MM_VENC			(BIT(9) | BIT(11))
+#define MT8195_TOP_AXI_PROT_EN_MM_VENC_CORE1		(BIT(10) | BIT(12))
+#define MT8195_TOP_AXI_PROT_EN_MM_VDEC0			BIT(13)
+#define MT8195_TOP_AXI_PROT_EN_MM_VDEC1			BIT(14)
+#define MT8195_TOP_AXI_PROT_EN_MM_VDOSYS1_2ND		BIT(22)
+#define MT8195_TOP_AXI_PROT_EN_MM_VPPSYS1_2ND		BIT(23)
+#define MT8195_TOP_AXI_PROT_EN_MM_CAM_2ND		BIT(24)
+#define MT8195_TOP_AXI_PROT_EN_MM_IMG_2ND		BIT(25)
+#define MT8195_TOP_AXI_PROT_EN_MM_VENC_2ND		BIT(26)
+#define MT8195_TOP_AXI_PROT_EN_MM_WPESYS		BIT(27)
+#define MT8195_TOP_AXI_PROT_EN_MM_VDEC0_2ND		BIT(28)
+#define MT8195_TOP_AXI_PROT_EN_MM_VDEC1_2ND		BIT(29)
+#define MT8195_TOP_AXI_PROT_EN_MM_VDOSYS1		GENMASK(31, 30)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VPPSYS0_2ND		(GENMASK(1, 0) | BIT(4) | BIT(11))
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VENC		BIT(2)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VENC_CORE1		(BIT(3) | BIT(15))
+#define MT8195_TOP_AXI_PROT_EN_MM_2_CAM			(BIT(5) | BIT(17))
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VPPSYS1		(GENMASK(7, 6) | BIT(18))
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VPPSYS0		GENMASK(9, 8)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VDOSYS1		BIT(10)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VDEC2_2ND		BIT(12)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VDEC0_2ND		BIT(13)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_WPESYS_2ND		BIT(14)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_IPE			BIT(16)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VDEC2		BIT(21)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_VDEC0		BIT(22)
+#define MT8195_TOP_AXI_PROT_EN_MM_2_WPESYS		GENMASK(24, 23)
+#define MT8195_TOP_AXI_PROT_EN_VDNR_1_EPD_TX		BIT(1)
+#define MT8195_TOP_AXI_PROT_EN_VDNR_1_DP_TX		BIT(2)
+#define MT8195_TOP_AXI_PROT_EN_VDNR_PCIE_MAC_P0		(BIT(11) | BIT(28))
+#define MT8195_TOP_AXI_PROT_EN_VDNR_PCIE_MAC_P1		(BIT(12) | BIT(29))
+#define MT8195_TOP_AXI_PROT_EN_VDNR_1_PCIE_MAC_P0	BIT(13)
+#define MT8195_TOP_AXI_PROT_EN_VDNR_1_PCIE_MAC_P1	BIT(14)
+#define MT8195_TOP_AXI_PROT_EN_SUB_INFRA_VDNR_MFG1	(BIT(17) | BIT(19))
+#define MT8195_TOP_AXI_PROT_EN_SUB_INFRA_VDNR_VPPSYS0	BIT(20)
+#define MT8195_TOP_AXI_PROT_EN_SUB_INFRA_VDNR_VDOSYS0	BIT(21)
+
 #define MT8192_TOP_AXI_PROT_EN_STA1			0x228
 #define MT8192_TOP_AXI_PROT_EN_1_STA1			0x258
 #define MT8192_TOP_AXI_PROT_EN_SET			0x2a0
@@ -58,6 +140,54 @@
 #define MT8192_TOP_AXI_PROT_EN_MM_2_MDP_2ND		BIT(13)
 #define MT8192_TOP_AXI_PROT_EN_VDNR_CAM			BIT(21)
 
+#define MT8186_TOP_AXI_PROT_EN_SET			(0x2A0)
+#define MT8186_TOP_AXI_PROT_EN_CLR			(0x2A4)
+#define MT8186_TOP_AXI_PROT_EN_STA			(0x228)
+#define MT8186_TOP_AXI_PROT_EN_1_SET			(0x2A8)
+#define MT8186_TOP_AXI_PROT_EN_1_CLR			(0x2AC)
+#define MT8186_TOP_AXI_PROT_EN_1_STA			(0x258)
+#define MT8186_TOP_AXI_PROT_EN_2_SET			(0x2B0)
+#define MT8186_TOP_AXI_PROT_EN_2_CLR			(0x2B4)
+#define MT8186_TOP_AXI_PROT_EN_2_STA			(0x26C)
+#define MT8186_TOP_AXI_PROT_EN_3_SET			(0x2B8)
+#define MT8186_TOP_AXI_PROT_EN_3_CLR			(0x2BC)
+#define MT8186_TOP_AXI_PROT_EN_3_STA			(0x2C8)
+
+/* MFG1 */
+#define MT8186_TOP_AXI_PROT_EN_1_MFG1_STEP1		(GENMASK(28, 27))
+#define MT8186_TOP_AXI_PROT_EN_MFG1_STEP2		(GENMASK(22, 21))
+#define MT8186_TOP_AXI_PROT_EN_MFG1_STEP3		(BIT(25))
+#define MT8186_TOP_AXI_PROT_EN_1_MFG1_STEP4		(BIT(29))
+/* DIS */
+#define MT8186_TOP_AXI_PROT_EN_1_DIS_STEP1		(GENMASK(12, 11))
+#define MT8186_TOP_AXI_PROT_EN_DIS_STEP2		(GENMASK(2, 1) | GENMASK(11, 10))
+/* IMG */
+#define MT8186_TOP_AXI_PROT_EN_1_IMG_STEP1		(BIT(23))
+#define MT8186_TOP_AXI_PROT_EN_1_IMG_STEP2		(BIT(15))
+/* IPE */
+#define MT8186_TOP_AXI_PROT_EN_1_IPE_STEP1		(BIT(24))
+#define MT8186_TOP_AXI_PROT_EN_1_IPE_STEP2		(BIT(16))
+/* CAM */
+#define MT8186_TOP_AXI_PROT_EN_1_CAM_STEP1		(GENMASK(22, 21))
+#define MT8186_TOP_AXI_PROT_EN_1_CAM_STEP2		(GENMASK(14, 13))
+/* VENC */
+#define MT8186_TOP_AXI_PROT_EN_1_VENC_STEP1		(BIT(31))
+#define MT8186_TOP_AXI_PROT_EN_1_VENC_STEP2		(BIT(19))
+/* VDEC */
+#define MT8186_TOP_AXI_PROT_EN_1_VDEC_STEP1		(BIT(30))
+#define MT8186_TOP_AXI_PROT_EN_1_VDEC_STEP2		(BIT(17))
+/* WPE */
+#define MT8186_TOP_AXI_PROT_EN_2_WPE_STEP1		(BIT(17))
+#define MT8186_TOP_AXI_PROT_EN_2_WPE_STEP2		(BIT(16))
+/* CONN_ON */
+#define MT8186_TOP_AXI_PROT_EN_1_CONN_ON_STEP1		(BIT(18))
+#define MT8186_TOP_AXI_PROT_EN_CONN_ON_STEP2		(BIT(14))
+#define MT8186_TOP_AXI_PROT_EN_CONN_ON_STEP3		(BIT(13))
+#define MT8186_TOP_AXI_PROT_EN_CONN_ON_STEP4		(BIT(16))
+/* ADSP_TOP */
+#define MT8186_TOP_AXI_PROT_EN_3_ADSP_TOP_STEP1		(GENMASK(12, 11))
+#define MT8186_TOP_AXI_PROT_EN_3_ADSP_TOP_STEP2		(GENMASK(1, 0))
+
 #define MT8183_TOP_AXI_PROT_EN_STA1			0x228
 #define MT8183_TOP_AXI_PROT_EN_STA1_1			0x258
 #define MT8183_TOP_AXI_PROT_EN_SET			0x2a0
@@ -147,6 +277,9 @@
 #define INFRA_TOPAXI_PROTECTEN_SET		0x0260
 #define INFRA_TOPAXI_PROTECTEN_CLR		0x0264
 
+#define MT8192_INFRA_CTRL			0x290
+#define MT8192_INFRA_CTRL_DISABLE_MFG2ACP	BIT(9)
+
 #define REG_INFRA_MISC				0xf00
 #define F_DDR_4GB_SUPPORT_EN			BIT(13)
 
diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h
index 2228bf6133da..4bba275e235a 100644
--- a/include/linux/soc/mediatek/mtk-mmsys.h
+++ b/include/linux/soc/mediatek/mtk-mmsys.h
@@ -29,13 +29,16 @@ enum mtk_ddp_comp_id {
 	DDP_COMPONENT_OVL0,
 	DDP_COMPONENT_OVL_2L0,
 	DDP_COMPONENT_OVL_2L1,
+	DDP_COMPONENT_OVL_2L2,
 	DDP_COMPONENT_OVL1,
+	DDP_COMPONENT_POSTMASK0,
 	DDP_COMPONENT_PWM0,
 	DDP_COMPONENT_PWM1,
 	DDP_COMPONENT_PWM2,
 	DDP_COMPONENT_RDMA0,
 	DDP_COMPONENT_RDMA1,
 	DDP_COMPONENT_RDMA2,
+	DDP_COMPONENT_RDMA4,
 	DDP_COMPONENT_UFOE,
 	DDP_COMPONENT_WDMA0,
 	DDP_COMPONENT_WDMA1,
diff --git a/include/linux/soc/qcom/apr.h b/include/linux/soc/qcom/apr.h
index 137f9f2ac4c3..23c5b30f3511 100644
--- a/include/linux/soc/qcom/apr.h
+++ b/include/linux/soc/qcom/apr.h
@@ -7,6 +7,7 @@
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 #include <dt-bindings/soc/qcom,apr.h>
+#include <dt-bindings/soc/qcom,gpr.h>
 
 extern struct bus_type aprbus;
 
@@ -75,10 +76,65 @@ struct apr_resp_pkt {
 	int payload_size;
 };
 
+struct gpr_hdr {
+	uint32_t version:4;
+	uint32_t hdr_size:4;
+	uint32_t pkt_size:24;
+	uint32_t dest_domain:8;
+	uint32_t src_domain:8;
+	uint32_t reserved:16;
+	uint32_t src_port;
+	uint32_t dest_port;
+	uint32_t token;
+	uint32_t opcode;
+} __packed;
+
+struct gpr_pkt {
+	struct gpr_hdr hdr;
+	uint32_t payload[];
+};
+
+struct gpr_resp_pkt {
+	struct gpr_hdr hdr;
+	void *payload;
+	int payload_size;
+};
+
+#define GPR_HDR_SIZE			sizeof(struct gpr_hdr)
+#define GPR_PKT_VER			0x0
+#define GPR_PKT_HEADER_WORD_SIZE	((sizeof(struct gpr_pkt) + 3) >> 2)
+#define GPR_PKT_HEADER_BYTE_SIZE	(GPR_PKT_HEADER_WORD_SIZE << 2)
+
+#define GPR_BASIC_RSP_RESULT		0x02001005
+
+struct gpr_ibasic_rsp_result_t {
+	uint32_t opcode;
+	uint32_t status;
+};
+
+#define GPR_BASIC_EVT_ACCEPTED		0x02001006
+
+struct gpr_ibasic_rsp_accepted_t {
+	uint32_t opcode;
+};
+
 /* Bits 0 to 15 -- Minor version,  Bits 16 to 31 -- Major version */
 #define APR_SVC_MAJOR_VERSION(v)	((v >> 16) & 0xFF)
 #define APR_SVC_MINOR_VERSION(v)	(v & 0xFF)
 
+typedef int (*gpr_port_cb) (struct gpr_resp_pkt *d, void *priv, int op);
+struct packet_router;
+struct pkt_router_svc {
+	struct device *dev;
+	gpr_port_cb callback;
+	struct packet_router *pr;
+	spinlock_t lock;
+	int id;
+	void *priv;
+};
+
+typedef struct pkt_router_svc gpr_port_t;
+
 struct apr_device {
 	struct device	dev;
 	uint16_t	svc_id;
@@ -86,21 +142,26 @@ struct apr_device {
 	uint32_t	version;
 	char name[APR_NAME_SIZE];
 	const char *service_path;
-	spinlock_t	lock;
+	struct pkt_router_svc svc;
 	struct list_head node;
 };
 
+typedef struct apr_device gpr_device_t;
+
 #define to_apr_device(d) container_of(d, struct apr_device, dev)
+#define svc_to_apr_device(d) container_of(d, struct apr_device, svc)
 
 struct apr_driver {
 	int	(*probe)(struct apr_device *sl);
 	int	(*remove)(struct apr_device *sl);
 	int	(*callback)(struct apr_device *a,
 			    struct apr_resp_pkt *d);
+	int	(*gpr_callback)(struct gpr_resp_pkt *d, void *data, int op);
 	struct device_driver		driver;
 	const struct apr_device_id	*id_table;
 };
 
+typedef struct apr_driver gpr_driver_t;
 #define to_apr_driver(d) container_of(d, struct apr_driver, driver)
 
 /*
@@ -123,7 +184,14 @@ void apr_driver_unregister(struct apr_driver *drv);
 #define module_apr_driver(__apr_driver) \
 	module_driver(__apr_driver, apr_driver_register, \
 			apr_driver_unregister)
+#define module_gpr_driver(__gpr_driver) module_apr_driver(__gpr_driver)
 
 int apr_send_pkt(struct apr_device *adev, struct apr_pkt *pkt);
 
+gpr_port_t *gpr_alloc_port(gpr_device_t *gdev, struct device *dev,
+				gpr_port_cb cb, void *priv);
+void gpr_free_port(gpr_port_t *port);
+int gpr_send_port_pkt(gpr_port_t *port, struct gpr_pkt *pkt);
+int gpr_send_pkt(gpr_device_t *gdev, struct gpr_pkt *pkt);
+
 #endif /* __QCOM_APR_H_ */
diff --git a/include/linux/soc/qcom/llcc-qcom.h b/include/linux/soc/qcom/llcc-qcom.h
index 437c9df13229..0bc21ee58fac 100644
--- a/include/linux/soc/qcom/llcc-qcom.h
+++ b/include/linux/soc/qcom/llcc-qcom.h
@@ -33,6 +33,14 @@
 #define LLCC_MODPE       29
 #define LLCC_APTCM       30
 #define LLCC_WRCACHE     31
+#define LLCC_CVPFW       32
+#define LLCC_CPUSS1      33
+#define LLCC_CAMEXP0     34
+#define LLCC_CPUMTE      35
+#define LLCC_CPUHWT      36
+#define LLCC_MDMCLAD2    37
+#define LLCC_CAMEXP1     38
+#define LLCC_AENPU       45
 
 /**
  * struct llcc_slice_desc - Cache slice descriptor
@@ -80,7 +88,7 @@ struct llcc_edac_reg_data {
  * @bitmap: Bit map to track the active slice ids
  * @offsets: Pointer to the bank offsets array
  * @ecc_irq: interrupt for llcc cache error detection and reporting
- * @major_version: Indicates the LLCC major version
+ * @version: Indicates the LLCC version
  */
 struct llcc_drv_data {
 	struct regmap *regmap;
@@ -93,7 +101,7 @@ struct llcc_drv_data {
 	unsigned long *bitmap;
 	u32 *offsets;
 	int ecc_irq;
-	u32 major_version;
+	u32 version;
 };
 
 #if IS_ENABLED(CONFIG_QCOM_LLCC)
diff --git a/include/linux/soc/qcom/mdt_loader.h b/include/linux/soc/qcom/mdt_loader.h
index afd47217996b..9e8e60421192 100644
--- a/include/linux/soc/qcom/mdt_loader.h
+++ b/include/linux/soc/qcom/mdt_loader.h
@@ -10,10 +10,14 @@
 
 struct device;
 struct firmware;
+struct qcom_scm_pas_metadata;
 
 #if IS_ENABLED(CONFIG_QCOM_MDT_LOADER)
 
 ssize_t qcom_mdt_get_size(const struct firmware *fw);
+int qcom_mdt_pas_init(struct device *dev, const struct firmware *fw,
+		      const char *fw_name, int pas_id, phys_addr_t mem_phys,
+		      struct qcom_scm_pas_metadata *pas_metadata_ctx);
 int qcom_mdt_load(struct device *dev, const struct firmware *fw,
 		  const char *fw_name, int pas_id, void *mem_region,
 		  phys_addr_t mem_phys, size_t mem_size,
@@ -23,7 +27,8 @@ int qcom_mdt_load_no_init(struct device *dev, const struct firmware *fw,
 			  const char *fw_name, int pas_id, void *mem_region,
 			  phys_addr_t mem_phys, size_t mem_size,
 			  phys_addr_t *reloc_base);
-void *qcom_mdt_read_metadata(const struct firmware *fw, size_t *data_len);
+void *qcom_mdt_read_metadata(const struct firmware *fw, size_t *data_len,
+			     const char *fw_name, struct device *dev);
 
 #else /* !IS_ENABLED(CONFIG_QCOM_MDT_LOADER) */
 
@@ -32,6 +37,13 @@ static inline ssize_t qcom_mdt_get_size(const struct firmware *fw)
 	return -ENODEV;
 }
 
+static inline int qcom_mdt_pas_init(struct device *dev, const struct firmware *fw,
+				    const char *fw_name, int pas_id, phys_addr_t mem_phys,
+				    struct qcom_scm_pas_metadata *pas_metadata_ctx)
+{
+	return -ENODEV;
+}
+
 static inline int qcom_mdt_load(struct device *dev, const struct firmware *fw,
 				const char *fw_name, int pas_id,
 				void *mem_region, phys_addr_t mem_phys,
@@ -51,7 +63,8 @@ static inline int qcom_mdt_load_no_init(struct device *dev,
 }
 
 static inline void *qcom_mdt_read_metadata(const struct firmware *fw,
-					   size_t *data_len)
+					   size_t *data_len, const char *fw_name,
+					   struct device *dev)
 {
 	return ERR_PTR(-ENODEV);
 }
diff --git a/include/linux/soc/qcom/qcom_aoss.h b/include/linux/soc/qcom/qcom_aoss.h
new file mode 100644
index 000000000000..3c2a82e606f8
--- /dev/null
+++ b/include/linux/soc/qcom/qcom_aoss.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef __QCOM_AOSS_H__
+#define __QCOM_AOSS_H__
+
+#include <linux/err.h>
+#include <linux/device.h>
+
+struct qmp;
+
+#if IS_ENABLED(CONFIG_QCOM_AOSS_QMP)
+
+int qmp_send(struct qmp *qmp, const void *data, size_t len);
+struct qmp *qmp_get(struct device *dev);
+void qmp_put(struct qmp *qmp);
+
+#else
+
+static inline int qmp_send(struct qmp *qmp, const void *data, size_t len)
+{
+	return -ENODEV;
+}
+
+static inline struct qmp *qmp_get(struct device *dev)
+{
+	return ERR_PTR(-ENODEV);
+}
+
+static inline void qmp_put(struct qmp *qmp)
+{
+}
+
+#endif
+
+#endif
diff --git a/include/linux/soc/qcom/smd-rpm.h b/include/linux/soc/qcom/smd-rpm.h
index 60e66fc9b6bf..82c9d489833a 100644
--- a/include/linux/soc/qcom/smd-rpm.h
+++ b/include/linux/soc/qcom/smd-rpm.h
@@ -38,6 +38,9 @@ struct qcom_smd_rpm;
 #define QCOM_SMD_RPM_IPA_CLK	0x617069
 #define QCOM_SMD_RPM_CE_CLK	0x6563
 #define QCOM_SMD_RPM_AGGR_CLK	0x72676761
+#define QCOM_SMD_RPM_HWKM_CLK	0x6d6b7768
+#define QCOM_SMD_RPM_PKA_CLK	0x616b70
+#define QCOM_SMD_RPM_MCFG_CLK	0x6766636d
 
 int qcom_rpm_smd_write(struct qcom_smd_rpm *rpm,
 		       int state,
diff --git a/include/linux/soc/renesas/rcar-rst.h b/include/linux/soc/renesas/rcar-rst.h
index 7899a5b8c247..1f1fe8bfaa76 100644
--- a/include/linux/soc/renesas/rcar-rst.h
+++ b/include/linux/soc/renesas/rcar-rst.h
@@ -4,8 +4,10 @@
 
 #ifdef CONFIG_RST_RCAR
 int rcar_rst_read_mode_pins(u32 *mode);
+int rcar_rst_set_rproc_boot_addr(u64 boot_addr);
 #else
 static inline int rcar_rst_read_mode_pins(u32 *mode) { return -ENODEV; }
+static inline int rcar_rst_set_rproc_boot_addr(u64 boot_addr) { return -ENODEV; }
 #endif
 
 #endif /* __LINUX_SOC_RENESAS_RCAR_RST_H__ */
diff --git a/include/linux/soc/samsung/exynos-chipid.h b/include/linux/soc/samsung/exynos-chipid.h
index 8bca6763f99c..62f0e2531068 100644
--- a/include/linux/soc/samsung/exynos-chipid.h
+++ b/include/linux/soc/samsung/exynos-chipid.h
@@ -9,10 +9,8 @@
 #define __LINUX_SOC_EXYNOS_CHIPID_H
 
 #define EXYNOS_CHIPID_REG_PRO_ID	0x00
-#define EXYNOS_SUBREV_MASK		(0xf << 4)
-#define EXYNOS_MAINREV_MASK		(0xf << 0)
-#define EXYNOS_REV_MASK			(EXYNOS_SUBREV_MASK | \
-					 EXYNOS_MAINREV_MASK)
+#define EXYNOS_REV_PART_MASK		0xf
+#define EXYNOS_REV_PART_SHIFT		4
 #define EXYNOS_MASK			0xfffff000
 
 #define EXYNOS_CHIPID_REG_PKG_ID	0x04
diff --git a/include/linux/soc/ti/ti-msgmgr.h b/include/linux/soc/ti/ti-msgmgr.h
index 1f6e76d423cf..69a8d7682c4b 100644
--- a/include/linux/soc/ti/ti-msgmgr.h
+++ b/include/linux/soc/ti/ti-msgmgr.h
@@ -1,7 +1,7 @@
 /*
  * Texas Instruments' Message Manager
  *
- * Copyright (C) 2015-2016 Texas Instruments Incorporated - https://www.ti.com/
+ * Copyright (C) 2015-2022 Texas Instruments Incorporated - https://www.ti.com/
  *	Nishanth Menon
  *
  * This program is free software; you can redistribute it and/or modify
@@ -17,10 +17,14 @@
 #ifndef TI_MSGMGR_H
 #define TI_MSGMGR_H
 
+struct mbox_chan;
+
 /**
  * struct ti_msgmgr_message - Message Manager structure
  * @len: Length of data in the Buffer
  * @buf: Buffer pointer
+ * @chan_rx: Expected channel for response, must be provided to use polled rx
+ * @timeout_rx_ms: Timeout value to use if polling for response
  *
  * This is the structure for data used in mbox_send_message
  * the length of data buffer used depends on the SoC integration
@@ -30,6 +34,8 @@
 struct ti_msgmgr_message {
 	size_t len;
 	u8 *buf;
+	struct mbox_chan *chan_rx;
+	int timeout_rx_ms;
 };
 
 #endif /* TI_MSGMGR_H */
diff --git a/include/linux/soc/ti/ti_sci_inta_msi.h b/include/linux/soc/ti/ti_sci_inta_msi.h
index e3aa8b14612e..4dba2f2aff6f 100644
--- a/include/linux/soc/ti/ti_sci_inta_msi.h
+++ b/include/linux/soc/ti/ti_sci_inta_msi.h
@@ -18,6 +18,4 @@ struct irq_domain
 				   struct irq_domain *parent);
 int ti_sci_inta_msi_domain_alloc_irqs(struct device *dev,
 				      struct ti_sci_resource *res);
-unsigned int ti_sci_inta_msi_get_virq(struct device *dev, u32 index);
-void ti_sci_inta_msi_domain_free_irqs(struct device *dev);
 #endif /* __INCLUDE_LINUX_IRQCHIP_TI_SCI_INTA_H */
diff --git a/include/linux/soc/ti/ti_sci_protocol.h b/include/linux/soc/ti/ti_sci_protocol.h
index 0aad7009b50e..bd0d11af76c5 100644
--- a/include/linux/soc/ti/ti_sci_protocol.h
+++ b/include/linux/soc/ti/ti_sci_protocol.h
@@ -645,7 +645,7 @@ devm_ti_sci_get_of_resource(const struct ti_sci_handle *handle,
 
 static inline struct ti_sci_resource *
 devm_ti_sci_get_resource(const struct ti_sci_handle *handle, struct device *dev,
-			 u32 dev_id, u32 sub_type);
+			 u32 dev_id, u32 sub_type)
 {
 	return ERR_PTR(-EINVAL);
 }
diff --git a/include/linux/socket.h b/include/linux/socket.h
index 041d6032a348..6f85f5d957ef 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -364,6 +364,9 @@ struct ucred {
 #define SOL_KCM		281
 #define SOL_TLS		282
 #define SOL_XDP		283
+#define SOL_MPTCP	284
+#define SOL_MCTP	285
+#define SOL_SMC		286
 
 /* IPX options */
 #define IPX_TYPE	1
diff --git a/include/linux/softirq.h b/include/linux/softirq.h
new file mode 100644
index 000000000000..c73d7dcb4cb5
--- /dev/null
+++ b/include/linux/softirq.h
@@ -0,0 +1 @@
+#include <linux/interrupt.h>
diff --git a/include/linux/sort.h b/include/linux/sort.h
index b5898725fe9d..e163287ac6c1 100644
--- a/include/linux/sort.h
+++ b/include/linux/sort.h
@@ -6,7 +6,7 @@
 
 void sort_r(void *base, size_t num, size_t size,
 	    cmp_r_func_t cmp_func,
-	    swap_func_t swap_func,
+	    swap_r_func_t swap_func,
 	    const void *priv);
 
 void sort(void *base, size_t num, size_t size,
diff --git a/include/linux/soundwire/sdw_intel.h b/include/linux/soundwire/sdw_intel.h
index 8a463b8fc12a..67e0d3e750b5 100644
--- a/include/linux/soundwire/sdw_intel.h
+++ b/include/linux/soundwire/sdw_intel.h
@@ -92,7 +92,7 @@
  * firmware.
  */
 struct sdw_intel_stream_params_data {
-	struct snd_pcm_substream *substream;
+	int stream;
 	struct snd_soc_dai *dai;
 	struct snd_pcm_hw_params *hw_params;
 	int link_id;
@@ -105,7 +105,7 @@ struct sdw_intel_stream_params_data {
  * firmware.
  */
 struct sdw_intel_stream_free_data {
-	struct snd_pcm_substream *substream;
+	int stream;
 	struct snd_soc_dai *dai;
 	int link_id;
 };
diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h
index 1a5eaef3b7f2..d424c1aadf38 100644
--- a/include/linux/spi/ads7846.h
+++ b/include/linux/spi/ads7846.h
@@ -1,17 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /* linux/spi/ads7846.h */
 
-/* Touchscreen characteristics vary between boards and models.  The
- * platform_data for the device's "struct device" holds this information.
- *
- * It's OK if the min/max values are zero.
- */
-enum ads7846_filter {
-	ADS7846_FILTER_OK,
-	ADS7846_FILTER_REPEAT,
-	ADS7846_FILTER_IGNORE,
-};
-
 struct ads7846_platform_data {
 	u16	model;			/* 7843, 7845, 7846, 7873. */
 	u16	vref_delay_usecs;	/* 0 for external vref; etc */
@@ -51,10 +40,6 @@ struct ads7846_platform_data {
 	int	gpio_pendown_debounce;	/* platform specific debounce time for
 					 * the gpio_pendown */
 	int	(*get_pendown_state)(void);
-	int	(*filter_init)	(const struct ads7846_platform_data *pdata,
-				 void **filter_data);
-	int	(*filter)	(void *filter_data, int data_idx, int *val);
-	void	(*filter_cleanup)(void *filter_data);
 	void	(*wait_for_sync)(void);
 	bool	wakeup;
 	unsigned long irq_flags;
diff --git a/include/linux/spi/max7301.h b/include/linux/spi/max7301.h
index 21449067aedb..e392c53758bc 100644
--- a/include/linux/spi/max7301.h
+++ b/include/linux/spi/max7301.h
@@ -31,6 +31,6 @@ struct max7301_platform_data {
 	u32		input_pullup_active;
 };
 
-extern int __max730x_remove(struct device *dev);
+extern void __max730x_remove(struct device *dev);
 extern int __max730x_probe(struct max7301 *ts);
 #endif
diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h
index eaab121ee575..4658e7801b42 100644
--- a/include/linux/spi/pxa2xx_spi.h
+++ b/include/linux/spi/pxa2xx_spi.h
@@ -9,9 +9,6 @@
 
 #include <linux/pxa2xx_ssp.h>
 
-#define PXA2XX_CS_ASSERT (0x01)
-#define PXA2XX_CS_DEASSERT (0x02)
-
 struct dma_chan;
 
 /*
@@ -45,9 +42,6 @@ struct pxa2xx_spi_chip {
 	u8 rx_threshold;
 	u8 dma_burst_size;
 	u32 timeout;
-	u8 enable_loopback;
-	int gpio_cs;
-	void (*cs_control)(u32 command);
 };
 
 #if defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_MMP)
diff --git a/include/linux/spi/s3c24xx.h b/include/linux/spi/s3c24xx.h
index 440a71593162..9b8bb22d5b0c 100644
--- a/include/linux/spi/s3c24xx.h
+++ b/include/linux/spi/s3c24xx.h
@@ -10,14 +10,9 @@
 #define __LINUX_SPI_S3C24XX_H __FILE__
 
 struct s3c2410_spi_info {
-	int			 pin_cs;	/* simple gpio cs */
 	unsigned int		 num_cs;	/* total chipselects */
 	int			 bus_num;       /* bus number to use. */
-
 	unsigned int		 use_fiq:1;	/* use fiq */
-
-	void (*gpio_setup)(struct s3c2410_spi_info *spi, int enable);
-	void (*set_cs)(struct s3c2410_spi_info *spi, int cs, int pol);
 };
 
 extern int s3c24xx_set_fiq(unsigned int irq, u32 *ack_ptr, bool on);
diff --git a/include/linux/spi/spi-mem.h b/include/linux/spi/spi-mem.h
index 85e2ff7b840d..2ba044d0d5e5 100644
--- a/include/linux/spi/spi-mem.h
+++ b/include/linux/spi/spi-mem.h
@@ -89,6 +89,7 @@ enum spi_mem_data_dir {
  * @dummy.dtr: whether the dummy bytes should be sent in DTR mode or not
  * @data.buswidth: number of IO lanes used to send/receive the data
  * @data.dtr: whether the data should be sent in DTR mode or not
+ * @data.ecc: whether error correction is required or not
  * @data.dir: direction of the transfer
  * @data.nbytes: number of data bytes to send/receive. Can be zero if the
  *		 operation does not involve transferring data
@@ -119,6 +120,7 @@ struct spi_mem_op {
 	struct {
 		u8 buswidth;
 		u8 dtr : 1;
+		u8 ecc : 1;
 		enum spi_mem_data_dir dir;
 		unsigned int nbytes;
 		union {
@@ -286,6 +288,19 @@ struct spi_controller_mem_ops {
 };
 
 /**
+ * struct spi_controller_mem_caps - SPI memory controller capabilities
+ * @dtr: Supports DTR operations
+ * @ecc: Supports operations with error correction
+ */
+struct spi_controller_mem_caps {
+	bool dtr;
+	bool ecc;
+};
+
+#define spi_mem_controller_is_capable(ctlr, cap)	\
+	((ctlr)->mem_caps && (ctlr)->mem_caps->cap)
+
+/**
  * struct spi_mem_driver - SPI memory driver
  * @spidrv: inherit from a SPI driver
  * @probe: probe a SPI memory. Usually where detection/initialization takes
@@ -319,10 +334,6 @@ void spi_controller_dma_unmap_mem_op_data(struct spi_controller *ctlr,
 
 bool spi_mem_default_supports_op(struct spi_mem *mem,
 				 const struct spi_mem_op *op);
-
-bool spi_mem_dtr_supports_op(struct spi_mem *mem,
-			     const struct spi_mem_op *op);
-
 #else
 static inline int
 spi_controller_dma_map_mem_op_data(struct spi_controller *ctlr,
@@ -345,13 +356,6 @@ bool spi_mem_default_supports_op(struct spi_mem *mem,
 {
 	return false;
 }
-
-static inline
-bool spi_mem_dtr_supports_op(struct spi_mem *mem,
-			     const struct spi_mem_op *op)
-{
-	return false;
-}
 #endif /* CONFIG_SPI_MEM */
 
 int spi_mem_adjust_op_size(struct spi_mem *mem, struct spi_mem_op *op);
diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h
index 6b0b686f6f90..5f8c063ddff4 100644
--- a/include/linux/spi/spi.h
+++ b/include/linux/spi/spi.h
@@ -14,15 +14,17 @@
 #include <linux/completion.h>
 #include <linux/scatterlist.h>
 #include <linux/gpio/consumer.h>
-#include <linux/ptp_clock_kernel.h>
 
 #include <uapi/linux/spi/spi.h>
+#include <linux/acpi.h>
 
 struct dma_chan;
 struct software_node;
+struct ptp_system_timestamp;
 struct spi_controller;
 struct spi_transfer;
 struct spi_controller_mem_ops;
+struct spi_controller_mem_caps;
 
 /*
  * INTERFACES between SPI master-side drivers and SPI slave protocol handlers,
@@ -78,10 +80,6 @@ struct spi_statistics {
 	unsigned long transfers_split_maxsize;
 };
 
-void spi_statistics_add_transfer_stats(struct spi_statistics *stats,
-				       struct spi_transfer *xfer,
-				       struct spi_controller *ctlr);
-
 #define SPI_STATISTICS_ADD_TO_FIELD(stats, field, count)	\
 	do {							\
 		unsigned long flags;				\
@@ -140,9 +138,6 @@ extern int spi_delay_exec(struct spi_delay *_delay, struct spi_transfer *xfer);
  *	for driver coldplugging, and in uevents used for hotplugging
  * @driver_override: If the name of a driver is written to this attribute, then
  *	the device will bind to the named driver and only the named driver.
- * @cs_gpio: LEGACY: gpio number of the chipselect line (optional, -ENOENT when
- *	not using a GPIO line) use cs_gpiod in new drivers by opting in on
- *	the spi_master.
  * @cs_gpiod: gpio descriptor of the chipselect line (optional, NULL when
  *	not using a GPIO line)
  * @word_delay: delay to be inserted between consecutive
@@ -189,7 +184,6 @@ struct spi_device {
 	void			*controller_data;
 	char			modalias[SPI_NAME_SIZE];
 	const char		*driver_override;
-	int			cs_gpio;	/* LEGACY: chip select gpio */
 	struct gpio_desc	*cs_gpiod;	/* chip select gpio desc */
 	struct spi_delay	word_delay; /* inter-word delay */
 	/* CS delays */
@@ -284,7 +278,7 @@ struct spi_message;
 struct spi_driver {
 	const struct spi_device_id *id_table;
 	int			(*probe)(struct spi_device *spi);
-	int			(*remove)(struct spi_device *spi);
+	void			(*remove)(struct spi_device *spi);
 	void			(*shutdown)(struct spi_device *spi);
 	struct device_driver	driver;
 };
@@ -377,7 +371,8 @@ extern struct spi_device *spi_new_ancillary_device(struct spi_device *spi, u8 ch
  * @cur_msg_prepared: spi_prepare_message was called for the currently
  *                    in-flight message
  * @cur_msg_mapped: message has been mapped for DMA
- * @last_cs_enable: was enable true on the last call to set_cs.
+ * @last_cs: the last chip_select that is recorded by set_cs, -1 on non chip
+ *           selected
  * @last_cs_mode_high: was (mode & SPI_CS_HIGH) true on the last call to set_cs.
  * @xfer_completion: used by core transfer_one_message()
  * @busy: message pump is busy
@@ -419,19 +414,15 @@ extern struct spi_device *spi_new_ancillary_device(struct spi_device *spi, u8 ch
  * @mem_ops: optimized/dedicated operations for interactions with SPI memory.
  *	     This field is optional and should only be implemented if the
  *	     controller has native support for memory like operations.
+ * @mem_caps: controller capabilities for the handling of memory operations.
  * @unprepare_message: undo any work done by prepare_message().
  * @slave_abort: abort the ongoing transfer request on an SPI slave controller
- * @cs_gpios: LEGACY: array of GPIO descs to use as chip select lines; one per
- *	CS number. Any individual value may be -ENOENT for CS lines that
- *	are not GPIOs (driven by the SPI controller itself). Use the cs_gpiods
- *	in new drivers.
  * @cs_gpiods: Array of GPIO descs to use as chip select lines; one per CS
  *	number. Any individual value may be NULL for CS lines that
  *	are not GPIOs (driven by the SPI controller itself).
  * @use_gpio_descriptors: Turns on the code in the SPI core to parse and grab
- *	GPIO descriptors rather than using global GPIO numbers grabbed by the
- *	driver. This will fill in @cs_gpiods and @cs_gpios should not be used,
- *	and SPI devices will have the cs_gpiod assigned rather than cs_gpio.
+ *	GPIO descriptors. This will fill in @cs_gpiods and SPI devices will have
+ *	the cs_gpiod assigned if a GPIO line is found for the chipselect.
  * @unused_native_cs: When cs_gpiods is used, spi_register_controller() will
  *	fill in this field with the first unused native CS, to be used by SPI
  *	controller drivers that need to drive a native CS when using GPIO CS.
@@ -615,7 +606,7 @@ struct spi_controller {
 	bool				auto_runtime_pm;
 	bool                            cur_msg_prepared;
 	bool				cur_msg_mapped;
-	bool				last_cs_enable;
+	char				last_cs;
 	bool				last_cs_mode_high;
 	bool                            fallback;
 	struct completion               xfer_completion;
@@ -643,9 +634,9 @@ struct spi_controller {
 
 	/* Optimized handlers for SPI memory-like operations. */
 	const struct spi_controller_mem_ops *mem_ops;
+	const struct spi_controller_mem_caps *mem_caps;
 
 	/* gpio chip select */
-	int			*cs_gpios;
 	struct gpio_desc	**cs_gpiods;
 	bool			use_gpio_descriptors;
 	s8			unused_native_cs;
@@ -763,7 +754,12 @@ extern int devm_spi_register_controller(struct device *dev,
 					struct spi_controller *ctlr);
 extern void spi_unregister_controller(struct spi_controller *ctlr);
 
-extern struct spi_controller *spi_busnum_to_master(u16 busnum);
+#if IS_ENABLED(CONFIG_ACPI)
+extern struct spi_device *acpi_spi_device_alloc(struct spi_controller *ctlr,
+						struct acpi_device *adev,
+						int index);
+int acpi_spi_count_resources(struct acpi_device *adev);
+#endif
 
 /*
  * SPI resource management while processing a SPI message
@@ -788,15 +784,6 @@ struct spi_res {
 	unsigned long long      data[]; /* guarantee ull alignment */
 };
 
-extern void *spi_res_alloc(struct spi_device *spi,
-			   spi_res_release_t release,
-			   size_t size, gfp_t gfp);
-extern void spi_res_add(struct spi_message *message, void *res);
-extern void spi_res_free(void *res);
-
-extern void spi_res_release(struct spi_controller *ctlr,
-			    struct spi_message *message);
-
 /*---------------------------------------------------------------------------*/
 
 /*
@@ -1114,8 +1101,6 @@ static inline void spi_message_free(struct spi_message *m)
 
 extern int spi_setup(struct spi_device *spi);
 extern int spi_async(struct spi_device *spi, struct spi_message *message);
-extern int spi_async_locked(struct spi_device *spi,
-			    struct spi_message *message);
 extern int spi_slave_abort(struct spi_device *spi);
 
 static inline size_t
@@ -1198,15 +1183,6 @@ struct spi_replaced_transfers {
 	struct spi_transfer inserted_transfers[];
 };
 
-extern struct spi_replaced_transfers *spi_replace_transfers(
-	struct spi_message *msg,
-	struct spi_transfer *xfer_first,
-	size_t remove,
-	size_t insert,
-	spi_replaced_release_t release,
-	size_t extradatasize,
-	gfp_t gfp);
-
 /*---------------------------------------------------------------------------*/
 
 /* SPI transfer transformation methods */
@@ -1480,7 +1456,7 @@ spi_register_board_info(struct spi_board_info const *info, unsigned n)
  * normally that would be handled by spi_unregister_controller().
  *
  * You can also use spi_alloc_device() and spi_add_device() to use a two
- * stage registration sequence for each spi_device.  This gives the caller
+ * stage registration sequence for each spi_device. This gives the caller
  * some more control over the spi_device structure before it is registered,
  * but requires that caller to initialize fields that would otherwise
  * be defined using the board info.
@@ -1505,23 +1481,6 @@ spi_transfer_is_last(struct spi_controller *ctlr, struct spi_transfer *xfer)
 	return list_is_last(&xfer->transfer_list, &ctlr->cur_msg->transfers);
 }
 
-/* OF support code */
-#if IS_ENABLED(CONFIG_OF)
-
-/* must call put_device() when done with returned spi_device device */
-extern struct spi_device *
-of_find_spi_device_by_node(struct device_node *node);
-
-#else
-
-static inline struct spi_device *
-of_find_spi_device_by_node(struct device_node *node)
-{
-	return NULL;
-}
-
-#endif /* IS_ENABLED(CONFIG_OF) */
-
 /* Compatibility layer */
 #define spi_master			spi_controller
 
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index 45310ea1b1d7..5c0c5174155d 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -57,7 +57,6 @@
 #include <linux/compiler.h>
 #include <linux/irqflags.h>
 #include <linux/thread_info.h>
-#include <linux/kernel.h>
 #include <linux/stringify.h>
 #include <linux/bottom_half.h>
 #include <linux/lockdep.h>
@@ -172,12 +171,11 @@ do {									\
  * Architectures that can implement ACQUIRE better need to take care.
  */
 #ifndef smp_mb__after_spinlock
-#define smp_mb__after_spinlock()	do { } while (0)
+#define smp_mb__after_spinlock()	kcsan_mb()
 #endif
 
 #ifdef CONFIG_DEBUG_SPINLOCK
  extern void do_raw_spin_lock(raw_spinlock_t *lock) __acquires(lock);
-#define do_raw_spin_lock_flags(lock, flags) do_raw_spin_lock(lock)
  extern int do_raw_spin_trylock(raw_spinlock_t *lock);
  extern void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock);
 #else
@@ -188,18 +186,6 @@ static inline void do_raw_spin_lock(raw_spinlock_t *lock) __acquires(lock)
 	mmiowb_spin_lock();
 }
 
-#ifndef arch_spin_lock_flags
-#define arch_spin_lock_flags(lock, flags)	arch_spin_lock(lock)
-#endif
-
-static inline void
-do_raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long *flags) __acquires(lock)
-{
-	__acquire(lock);
-	arch_spin_lock_flags(&lock->raw_lock, *flags);
-	mmiowb_spin_lock();
-}
-
 static inline int do_raw_spin_trylock(raw_spinlock_t *lock)
 {
 	int ret = arch_spin_trylock(&(lock)->raw_lock);
diff --git a/include/linux/spinlock_api.h b/include/linux/spinlock_api.h
new file mode 100644
index 000000000000..6338b27f98df
--- /dev/null
+++ b/include/linux/spinlock_api.h
@@ -0,0 +1 @@
+#include <linux/spinlock.h>
diff --git a/include/linux/spinlock_api_smp.h b/include/linux/spinlock_api_smp.h
index 6b8e1a0b137b..51fa0dab68c4 100644
--- a/include/linux/spinlock_api_smp.h
+++ b/include/linux/spinlock_api_smp.h
@@ -108,16 +108,7 @@ static inline unsigned long __raw_spin_lock_irqsave(raw_spinlock_t *lock)
 	local_irq_save(flags);
 	preempt_disable();
 	spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
-	/*
-	 * On lockdep we dont want the hand-coded irq-enable of
-	 * do_raw_spin_lock_flags() code, because lockdep assumes
-	 * that interrupts are not re-enabled during lock-acquire:
-	 */
-#ifdef CONFIG_LOCKDEP
 	LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
-#else
-	do_raw_spin_lock_flags(lock, &flags);
-#endif
 	return flags;
 }
 
diff --git a/include/linux/spinlock_api_up.h b/include/linux/spinlock_api_up.h
index d0d188861ad6..b8ba00ccccde 100644
--- a/include/linux/spinlock_api_up.h
+++ b/include/linux/spinlock_api_up.h
@@ -59,6 +59,7 @@
 #define _raw_spin_lock_nested(lock, subclass)	__LOCK(lock)
 #define _raw_read_lock(lock)			__LOCK(lock)
 #define _raw_write_lock(lock)			__LOCK(lock)
+#define _raw_write_lock_nested(lock, subclass)	__LOCK(lock)
 #define _raw_spin_lock_bh(lock)			__LOCK_BH(lock)
 #define _raw_read_lock_bh(lock)			__LOCK_BH(lock)
 #define _raw_write_lock_bh(lock)		__LOCK_BH(lock)
diff --git a/include/linux/spinlock_types_up.h b/include/linux/spinlock_types_up.h
index c09b6407ae1b..7f86a2016ac5 100644
--- a/include/linux/spinlock_types_up.h
+++ b/include/linux/spinlock_types_up.h
@@ -1,7 +1,7 @@
 #ifndef __LINUX_SPINLOCK_TYPES_UP_H
 #define __LINUX_SPINLOCK_TYPES_UP_H
 
-#ifndef __LINUX_SPINLOCK_TYPES_H
+#ifndef __LINUX_SPINLOCK_TYPES_RAW_H
 # error "please don't include this file directly"
 #endif
 
diff --git a/include/linux/spinlock_up.h b/include/linux/spinlock_up.h
index 0ac9112c1bbe..16521074b6f7 100644
--- a/include/linux/spinlock_up.h
+++ b/include/linux/spinlock_up.h
@@ -62,7 +62,6 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
 #define arch_spin_is_locked(lock)	((void)(lock), 0)
 /* for sched/core.c and kernel_lock.c: */
 # define arch_spin_lock(lock)		do { barrier(); (void)(lock); } while (0)
-# define arch_spin_lock_flags(lock, flags)	do { barrier(); (void)(lock); } while (0)
 # define arch_spin_unlock(lock)	do { barrier(); (void)(lock); } while (0)
 # define arch_spin_trylock(lock)	({ barrier(); (void)(lock); 1; })
 #endif /* DEBUG_SPINLOCK */
diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index e6011a9975af..01226e4d960a 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -117,7 +117,8 @@ static inline int srcu_read_lock_held(const struct srcu_struct *ssp)
  * lockdep_is_held() calls.
  */
 #define srcu_dereference_check(p, ssp, c) \
-	__rcu_dereference_check((p), (c) || srcu_read_lock_held(ssp), __rcu)
+	__rcu_dereference_check((p), __UNIQUE_ID(rcu), \
+				(c) || srcu_read_lock_held(ssp), __rcu)
 
 /**
  * srcu_dereference - fetch SRCU-protected pointer for later dereferencing
diff --git a/include/linux/ssb/ssb_driver_gige.h b/include/linux/ssb/ssb_driver_gige.h
index 15ba0df1ee0d..28c145a51e57 100644
--- a/include/linux/ssb/ssb_driver_gige.h
+++ b/include/linux/ssb/ssb_driver_gige.h
@@ -95,7 +95,7 @@ static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev)
 	struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
 	if (dev)
 		return (dev->dev->bus->chip_id == 0x4785);
-	return 0;
+	return false;
 }
 
 /* Get the device MAC address */
diff --git a/include/linux/stackdepot.h b/include/linux/stackdepot.h
index 6bb4bc1a5f54..17f992fe6355 100644
--- a/include/linux/stackdepot.h
+++ b/include/linux/stackdepot.h
@@ -11,23 +11,39 @@
 #ifndef _LINUX_STACKDEPOT_H
 #define _LINUX_STACKDEPOT_H
 
+#include <linux/gfp.h>
+
 typedef u32 depot_stack_handle_t;
 
+depot_stack_handle_t __stack_depot_save(unsigned long *entries,
+					unsigned int nr_entries,
+					gfp_t gfp_flags, bool can_alloc);
+
+/*
+ * Every user of stack depot has to call this during its own init when it's
+ * decided that it will be calling stack_depot_save() later.
+ *
+ * The alternative is to select STACKDEPOT_ALWAYS_INIT to have stack depot
+ * enabled as part of mm_init(), for subsystems where it's known at compile time
+ * that stack depot will be used.
+ */
+int stack_depot_init(void);
+
+#ifdef CONFIG_STACKDEPOT_ALWAYS_INIT
+static inline int stack_depot_early_init(void)	{ return stack_depot_init(); }
+#else
+static inline int stack_depot_early_init(void)	{ return 0; }
+#endif
+
 depot_stack_handle_t stack_depot_save(unsigned long *entries,
 				      unsigned int nr_entries, gfp_t gfp_flags);
 
 unsigned int stack_depot_fetch(depot_stack_handle_t handle,
 			       unsigned long **entries);
 
-unsigned int filter_irq_stacks(unsigned long *entries, unsigned int nr_entries);
+int stack_depot_snprint(depot_stack_handle_t handle, char *buf, size_t size,
+		       int spaces);
 
-#ifdef CONFIG_STACKDEPOT
-int stack_depot_init(void);
-#else
-static inline int stack_depot_init(void)
-{
-	return 0;
-}
-#endif	/* CONFIG_STACKDEPOT */
+void stack_depot_print(depot_stack_handle_t stack);
 
 #endif
diff --git a/include/linux/stackleak.h b/include/linux/stackleak.h
index a59db2f08e76..ccaab2043fcd 100644
--- a/include/linux/stackleak.h
+++ b/include/linux/stackleak.h
@@ -23,11 +23,6 @@ static inline void stackleak_task_init(struct task_struct *t)
 # endif
 }
 
-#ifdef CONFIG_STACKLEAK_RUNTIME_DISABLE
-int stack_erasing_sysctl(struct ctl_table *table, int write,
-			void *buffer, size_t *lenp, loff_t *ppos);
-#endif
-
 #else /* !CONFIG_GCC_PLUGIN_STACKLEAK */
 static inline void stackleak_task_init(struct task_struct *t) { }
 #endif
diff --git a/include/linux/stacktrace.h b/include/linux/stacktrace.h
index 9edecb494e9e..97455880ac41 100644
--- a/include/linux/stacktrace.h
+++ b/include/linux/stacktrace.h
@@ -8,21 +8,6 @@
 struct task_struct;
 struct pt_regs;
 
-#ifdef CONFIG_STACKTRACE
-void stack_trace_print(const unsigned long *trace, unsigned int nr_entries,
-		       int spaces);
-int stack_trace_snprint(char *buf, size_t size, const unsigned long *entries,
-			unsigned int nr_entries, int spaces);
-unsigned int stack_trace_save(unsigned long *store, unsigned int size,
-			      unsigned int skipnr);
-unsigned int stack_trace_save_tsk(struct task_struct *task,
-				  unsigned long *store, unsigned int size,
-				  unsigned int skipnr);
-unsigned int stack_trace_save_regs(struct pt_regs *regs, unsigned long *store,
-				   unsigned int size, unsigned int skipnr);
-unsigned int stack_trace_save_user(unsigned long *store, unsigned int size);
-
-/* Internal interfaces. Do not use in generic code */
 #ifdef CONFIG_ARCH_STACKWALK
 
 /**
@@ -75,8 +60,25 @@ int arch_stack_walk_reliable(stack_trace_consume_fn consume_entry, void *cookie,
 
 void arch_stack_walk_user(stack_trace_consume_fn consume_entry, void *cookie,
 			  const struct pt_regs *regs);
+#endif /* CONFIG_ARCH_STACKWALK */
 
-#else /* CONFIG_ARCH_STACKWALK */
+#ifdef CONFIG_STACKTRACE
+void stack_trace_print(const unsigned long *trace, unsigned int nr_entries,
+		       int spaces);
+int stack_trace_snprint(char *buf, size_t size, const unsigned long *entries,
+			unsigned int nr_entries, int spaces);
+unsigned int stack_trace_save(unsigned long *store, unsigned int size,
+			      unsigned int skipnr);
+unsigned int stack_trace_save_tsk(struct task_struct *task,
+				  unsigned long *store, unsigned int size,
+				  unsigned int skipnr);
+unsigned int stack_trace_save_regs(struct pt_regs *regs, unsigned long *store,
+				   unsigned int size, unsigned int skipnr);
+unsigned int stack_trace_save_user(unsigned long *store, unsigned int size);
+unsigned int filter_irq_stacks(unsigned long *entries, unsigned int nr_entries);
+
+#ifndef CONFIG_ARCH_STACKWALK
+/* Internal interfaces. Do not use in generic code */
 struct stack_trace {
 	unsigned int nr_entries, max_entries;
 	unsigned long *entries;
diff --git a/include/linux/static_call.h b/include/linux/static_call.h
index 3e56a9751c06..df53bed9d71f 100644
--- a/include/linux/static_call.h
+++ b/include/linux/static_call.h
@@ -180,13 +180,13 @@ extern int static_call_text_reserved(void *start, void *end);
 
 extern long __static_call_return0(void);
 
-#define __DEFINE_STATIC_CALL(name, _func, _func_init)			\
+#define DEFINE_STATIC_CALL(name, _func)					\
 	DECLARE_STATIC_CALL(name, _func);				\
 	struct static_call_key STATIC_CALL_KEY(name) = {		\
-		.func = _func_init,					\
+		.func = _func,						\
 		.type = 1,						\
 	};								\
-	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func_init)
+	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
 
 #define DEFINE_STATIC_CALL_NULL(name, _func)				\
 	DECLARE_STATIC_CALL(name, _func);				\
@@ -196,6 +196,14 @@ extern long __static_call_return0(void);
 	};								\
 	ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name)
 
+#define DEFINE_STATIC_CALL_RET0(name, _func)				\
+	DECLARE_STATIC_CALL(name, _func);				\
+	struct static_call_key STATIC_CALL_KEY(name) = {		\
+		.func = __static_call_return0,				\
+		.type = 1,						\
+	};								\
+	ARCH_DEFINE_STATIC_CALL_RET0_TRAMP(name)
+
 #define static_call_cond(name)	(void)__static_call(name)
 
 #define EXPORT_STATIC_CALL(name)					\
@@ -217,12 +225,12 @@ extern long __static_call_return0(void);
 
 static inline int static_call_init(void) { return 0; }
 
-#define __DEFINE_STATIC_CALL(name, _func, _func_init)			\
+#define DEFINE_STATIC_CALL(name, _func)					\
 	DECLARE_STATIC_CALL(name, _func);				\
 	struct static_call_key STATIC_CALL_KEY(name) = {		\
-		.func = _func_init,					\
+		.func = _func,						\
 	};								\
-	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func_init)
+	ARCH_DEFINE_STATIC_CALL_TRAMP(name, _func)
 
 #define DEFINE_STATIC_CALL_NULL(name, _func)				\
 	DECLARE_STATIC_CALL(name, _func);				\
@@ -231,6 +239,12 @@ static inline int static_call_init(void) { return 0; }
 	};								\
 	ARCH_DEFINE_STATIC_CALL_NULL_TRAMP(name)
 
+#define DEFINE_STATIC_CALL_RET0(name, _func)				\
+	DECLARE_STATIC_CALL(name, _func);				\
+	struct static_call_key STATIC_CALL_KEY(name) = {		\
+		.func = __static_call_return0,				\
+	};								\
+	ARCH_DEFINE_STATIC_CALL_RET0_TRAMP(name)
 
 #define static_call_cond(name)	(void)__static_call(name)
 
@@ -248,10 +262,7 @@ static inline int static_call_text_reserved(void *start, void *end)
 	return 0;
 }
 
-static inline long __static_call_return0(void)
-{
-	return 0;
-}
+extern long __static_call_return0(void);
 
 #define EXPORT_STATIC_CALL(name)					\
 	EXPORT_SYMBOL(STATIC_CALL_KEY(name));				\
@@ -281,11 +292,14 @@ static inline long __static_call_return0(void)
 		.func = _func_init,					\
 	}
 
+#define DEFINE_STATIC_CALL(name, _func)					\
+	__DEFINE_STATIC_CALL(name, _func, _func)
+
 #define DEFINE_STATIC_CALL_NULL(name, _func)				\
-	DECLARE_STATIC_CALL(name, _func);				\
-	struct static_call_key STATIC_CALL_KEY(name) = {		\
-		.func = NULL,						\
-	}
+	__DEFINE_STATIC_CALL(name, _func, NULL)
+
+#define DEFINE_STATIC_CALL_RET0(name, _func)				\
+	__DEFINE_STATIC_CALL(name, _func, __static_call_return0)
 
 static inline void __static_call_nop(void) { }
 
@@ -327,10 +341,4 @@ static inline int static_call_text_reserved(void *start, void *end)
 
 #endif /* CONFIG_HAVE_STATIC_CALL */
 
-#define DEFINE_STATIC_CALL(name, _func)					\
-	__DEFINE_STATIC_CALL(name, _func, _func)
-
-#define DEFINE_STATIC_CALL_RET0(name, _func)				\
-	__DEFINE_STATIC_CALL(name, _func, __static_call_return0)
-
 #endif /* _LINUX_STATIC_CALL_H */
diff --git a/include/linux/stddef.h b/include/linux/stddef.h
index 998a4ba28eba..929d67710cc5 100644
--- a/include/linux/stddef.h
+++ b/include/linux/stddef.h
@@ -13,14 +13,10 @@ enum {
 };
 
 #undef offsetof
-#ifdef __compiler_offsetof
-#define offsetof(TYPE, MEMBER)	__compiler_offsetof(TYPE, MEMBER)
-#else
-#define offsetof(TYPE, MEMBER)	((size_t)&((TYPE *)0)->MEMBER)
-#endif
+#define offsetof(TYPE, MEMBER)	__builtin_offsetof(TYPE, MEMBER)
 
 /**
- * sizeof_field(TYPE, MEMBER)
+ * sizeof_field() - Report the size of a struct field in bytes
  *
  * @TYPE: The structure containing the field of interest
  * @MEMBER: The field to return the size of
@@ -28,7 +24,7 @@ enum {
 #define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
 
 /**
- * offsetofend(TYPE, MEMBER)
+ * offsetofend() - Report the offset of a struct field within the struct
  *
  * @TYPE: The type of the structure
  * @MEMBER: The member within the structure to get the end offset of
@@ -36,4 +32,65 @@ enum {
 #define offsetofend(TYPE, MEMBER) \
 	(offsetof(TYPE, MEMBER)	+ sizeof_field(TYPE, MEMBER))
 
+/**
+ * struct_group() - Wrap a set of declarations in a mirrored struct
+ *
+ * @NAME: The identifier name of the mirrored sub-struct
+ * @MEMBERS: The member declarations for the mirrored structs
+ *
+ * Used to create an anonymous union of two structs with identical
+ * layout and size: one anonymous and one named. The former can be
+ * used normally without sub-struct naming, and the latter can be
+ * used to reason about the start, end, and size of the group of
+ * struct members.
+ */
+#define struct_group(NAME, MEMBERS...)	\
+	__struct_group(/* no tag */, NAME, /* no attrs */, MEMBERS)
+
+/**
+ * struct_group_attr() - Create a struct_group() with trailing attributes
+ *
+ * @NAME: The identifier name of the mirrored sub-struct
+ * @ATTRS: Any struct attributes to apply
+ * @MEMBERS: The member declarations for the mirrored structs
+ *
+ * Used to create an anonymous union of two structs with identical
+ * layout and size: one anonymous and one named. The former can be
+ * used normally without sub-struct naming, and the latter can be
+ * used to reason about the start, end, and size of the group of
+ * struct members. Includes structure attributes argument.
+ */
+#define struct_group_attr(NAME, ATTRS, MEMBERS...) \
+	__struct_group(/* no tag */, NAME, ATTRS, MEMBERS)
+
+/**
+ * struct_group_tagged() - Create a struct_group with a reusable tag
+ *
+ * @TAG: The tag name for the named sub-struct
+ * @NAME: The identifier name of the mirrored sub-struct
+ * @MEMBERS: The member declarations for the mirrored structs
+ *
+ * Used to create an anonymous union of two structs with identical
+ * layout and size: one anonymous and one named. The former can be
+ * used normally without sub-struct naming, and the latter can be
+ * used to reason about the start, end, and size of the group of
+ * struct members. Includes struct tag argument for the named copy,
+ * so the specified layout can be reused later.
+ */
+#define struct_group_tagged(TAG, NAME, MEMBERS...) \
+	__struct_group(TAG, NAME, /* no attrs */, MEMBERS)
+
+/**
+ * DECLARE_FLEX_ARRAY() - Declare a flexible array usable in a union
+ *
+ * @TYPE: The type of each flexible array element
+ * @NAME: The name of the flexible array member
+ *
+ * In order to have a flexible array member in a union or alone in a
+ * struct, it needs to be wrapped in an anonymous struct with at least 1
+ * named member, but that member can be empty.
+ */
+#define DECLARE_FLEX_ARRAY(TYPE, NAME) \
+	__DECLARE_FLEX_ARRAY(TYPE, NAME)
+
 #endif
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index a6f03b36fc4f..29917850f079 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -233,6 +233,7 @@ struct plat_stmmacenet_data {
 	int (*clks_config)(void *priv, bool enabled);
 	int (*crosststamp)(ktime_t *device, struct system_counterval_t *system,
 			   void *ctx);
+	void (*dump_debug_regs)(void *priv);
 	void *bsp_priv;
 	struct clk *stmmac_clk;
 	struct clk *pclk;
@@ -241,6 +242,7 @@ struct plat_stmmacenet_data {
 	unsigned int clk_ref_rate;
 	unsigned int mult_fact_100ns;
 	s32 ptp_max_adj;
+	u32 cdc_error_adj;
 	struct reset_control *stmmac_rst;
 	struct reset_control *stmmac_ahb_rst;
 	struct stmmac_axi *axi;
@@ -268,5 +270,6 @@ struct plat_stmmacenet_data {
 	int msi_rx_base_vec;
 	int msi_tx_base_vec;
 	bool use_phy_wol;
+	bool sph_disable;
 };
 #endif
diff --git a/include/linux/string.h b/include/linux/string.h
index 5e96d656be7a..b6572aeca2f5 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -249,36 +249,47 @@ static inline const char *kbasename(const char *path)
 	return tail ? tail + 1 : path;
 }
 
-#define __FORTIFY_INLINE extern __always_inline __attribute__((gnu_inline))
-#define __RENAME(x) __asm__(#x)
-
-void fortify_panic(const char *name) __noreturn __cold;
-void __read_overflow(void) __compiletime_error("detected read beyond size of object passed as 1st parameter");
-void __read_overflow2(void) __compiletime_error("detected read beyond size of object passed as 2nd parameter");
-void __read_overflow3(void) __compiletime_error("detected read beyond size of object passed as 3rd parameter");
-void __write_overflow(void) __compiletime_error("detected write beyond size of object passed as 1st parameter");
-
 #if !defined(__NO_FORTIFY) && defined(__OPTIMIZE__) && defined(CONFIG_FORTIFY_SOURCE)
 #include <linux/fortify-string.h>
 #endif
 
+void memcpy_and_pad(void *dest, size_t dest_len, const void *src, size_t count,
+		    int pad);
+
 /**
- * memcpy_and_pad - Copy one buffer to another with padding
- * @dest: Where to copy to
- * @dest_len: The destination buffer size
- * @src: Where to copy from
- * @count: The number of bytes to copy
- * @pad: Character to use for padding if space is left in destination.
+ * memset_after - Set a value after a struct member to the end of a struct
+ *
+ * @obj: Address of target struct instance
+ * @v: Byte value to repeatedly write
+ * @member: after which struct member to start writing bytes
+ *
+ * This is good for clearing padding following the given member.
  */
-static inline void memcpy_and_pad(void *dest, size_t dest_len,
-				  const void *src, size_t count, int pad)
-{
-	if (dest_len > count) {
-		memcpy(dest, src, count);
-		memset(dest + count, pad,  dest_len - count);
-	} else
-		memcpy(dest, src, dest_len);
-}
+#define memset_after(obj, v, member)					\
+({									\
+	u8 *__ptr = (u8 *)(obj);					\
+	typeof(v) __val = (v);						\
+	memset(__ptr + offsetofend(typeof(*(obj)), member), __val,	\
+	       sizeof(*(obj)) - offsetofend(typeof(*(obj)), member));	\
+})
+
+/**
+ * memset_startat - Set a value starting at a member to the end of a struct
+ *
+ * @obj: Address of target struct instance
+ * @v: Byte value to repeatedly write
+ * @member: struct member to start writing at
+ *
+ * Note that if there is padding between the prior member and the target
+ * member, memset_after() should be used to clear the prior padding.
+ */
+#define memset_startat(obj, v, member)					\
+({									\
+	u8 *__ptr = (u8 *)(obj);					\
+	typeof(v) __val = (v);						\
+	memset(__ptr + offsetof(typeof(*(obj)), member), __val,		\
+	       sizeof(*(obj)) - offsetof(typeof(*(obj)), member));	\
+})
 
 /**
  * str_has_prefix - Test if a string has a given prefix
diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h
index 68189c4a2eb1..4d72258d42fd 100644
--- a/include/linux/string_helpers.h
+++ b/include/linux/string_helpers.h
@@ -4,8 +4,10 @@
 
 #include <linux/bits.h>
 #include <linux/ctype.h>
+#include <linux/string.h>
 #include <linux/types.h>
 
+struct device;
 struct file;
 struct task_struct;
 
@@ -99,6 +101,29 @@ char *kstrdup_quotable(const char *src, gfp_t gfp);
 char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp);
 char *kstrdup_quotable_file(struct file *file, gfp_t gfp);
 
+char **kasprintf_strarray(gfp_t gfp, const char *prefix, size_t n);
 void kfree_strarray(char **array, size_t n);
 
+char **devm_kasprintf_strarray(struct device *dev, const char *prefix, size_t n);
+
+static inline const char *str_yes_no(bool v)
+{
+	return v ? "yes" : "no";
+}
+
+static inline const char *str_on_off(bool v)
+{
+	return v ? "on" : "off";
+}
+
+static inline const char *str_enable_disable(bool v)
+{
+	return v ? "enable" : "disable";
+}
+
+static inline const char *str_enabled_disabled(bool v)
+{
+	return v ? "enabled" : "disabled";
+}
+
 #endif
diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 98da816b5fc2..3e6ce288a7fc 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -99,6 +99,7 @@ struct rpc_auth_create_args {
 
 /* Flags for rpcauth_lookupcred() */
 #define RPCAUTH_LOOKUP_NEW		0x01	/* Accept an uninitialised cred */
+#define RPCAUTH_LOOKUP_ASYNC		0x02	/* Don't block waiting for memory */
 
 /*
  * Client authentication ops
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index a4661646adc9..90501404fa49 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -40,6 +40,7 @@ struct rpc_clnt {
 	unsigned int		cl_clid;	/* client id */
 	struct list_head	cl_clients;	/* Global list of clients */
 	struct list_head	cl_tasks;	/* List of tasks */
+	atomic_t		cl_pid;		/* task PID counter */
 	spinlock_t		cl_lock;	/* spinlock */
 	struct rpc_xprt __rcu *	cl_xprt;	/* transport */
 	const struct rpc_procinfo *cl_procinfo;	/* procedure info */
@@ -159,6 +160,7 @@ struct rpc_add_xprt_test {
 #define RPC_CLNT_CREATE_NO_RETRANS_TIMEOUT	(1UL << 9)
 #define RPC_CLNT_CREATE_SOFTERR		(1UL << 10)
 #define RPC_CLNT_CREATE_REUSEPORT	(1UL << 11)
+#define RPC_CLNT_CREATE_CONNECTED	(1UL << 12)
 
 struct rpc_clnt *rpc_create(struct rpc_create_args *args);
 struct rpc_clnt	*rpc_bind_new_program(struct rpc_clnt *,
diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h
index a237b8dbf608..1d7a3e51b795 100644
--- a/include/linux/sunrpc/sched.h
+++ b/include/linux/sunrpc/sched.h
@@ -124,7 +124,6 @@ struct rpc_task_setup {
 #define RPC_TASK_MOVEABLE	0x0004		/* nfs4.1+ rpc tasks */
 #define RPC_TASK_NULLCREDS	0x0010		/* Use AUTH_NULL credential */
 #define RPC_CALL_MAJORSEEN	0x0020		/* major timeout seen */
-#define RPC_TASK_ROOTCREDS	0x0040		/* force root creds */
 #define RPC_TASK_DYNAMIC	0x0080		/* task was kmalloc'ed */
 #define	RPC_TASK_NO_ROUND_ROBIN	0x0100		/* send requests on "main" xprt */
 #define RPC_TASK_SOFT		0x0200		/* Use soft timeouts */
@@ -150,25 +149,13 @@ struct rpc_task_setup {
 #define RPC_TASK_MSG_PIN_WAIT	5
 #define RPC_TASK_SIGNALLED	6
 
-#define RPC_IS_RUNNING(t)	test_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
-#define rpc_set_running(t)	set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
 #define rpc_test_and_set_running(t) \
 				test_and_set_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
-#define rpc_clear_running(t)	\
-	do { \
-		smp_mb__before_atomic(); \
-		clear_bit(RPC_TASK_RUNNING, &(t)->tk_runstate); \
-		smp_mb__after_atomic(); \
-	} while (0)
+#define rpc_clear_running(t)	clear_bit(RPC_TASK_RUNNING, &(t)->tk_runstate)
 
 #define RPC_IS_QUEUED(t)	test_bit(RPC_TASK_QUEUED, &(t)->tk_runstate)
 #define rpc_set_queued(t)	set_bit(RPC_TASK_QUEUED, &(t)->tk_runstate)
-#define rpc_clear_queued(t)	\
-	do { \
-		smp_mb__before_atomic(); \
-		clear_bit(RPC_TASK_QUEUED, &(t)->tk_runstate); \
-		smp_mb__after_atomic(); \
-	} while (0)
+#define rpc_clear_queued(t)	clear_bit(RPC_TASK_QUEUED, &(t)->tk_runstate)
 
 #define RPC_IS_ACTIVATED(t)	test_bit(RPC_TASK_ACTIVE, &(t)->tk_runstate)
 
@@ -275,6 +262,7 @@ void		rpc_destroy_mempool(void);
 extern struct workqueue_struct *rpciod_workqueue;
 extern struct workqueue_struct *xprtiod_workqueue;
 void		rpc_prepare_task(struct rpc_task *task);
+gfp_t		rpc_task_gfp_mask(void);
 
 static inline int rpc_wait_for_completion_task(struct rpc_task *task)
 {
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 064c96157d1f..217711fc9cac 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -52,25 +52,6 @@ struct svc_pool {
 	unsigned long		sp_flags;
 } ____cacheline_aligned_in_smp;
 
-struct svc_serv;
-
-struct svc_serv_ops {
-	/* Callback to use when last thread exits. */
-	void		(*svo_shutdown)(struct svc_serv *, struct net *);
-
-	/* function for service threads to run */
-	int		(*svo_function)(void *);
-
-	/* queue up a transport for servicing */
-	void		(*svo_enqueue_xprt)(struct svc_xprt *);
-
-	/* set up thread (or whatever) execution context */
-	int		(*svo_setup)(struct svc_serv *, struct svc_pool *, int);
-
-	/* optional module to count when adding threads (pooled svcs only) */
-	struct module	*svo_module;
-};
-
 /*
  * RPC service.
  *
@@ -85,6 +66,7 @@ struct svc_serv {
 	struct svc_program *	sv_program;	/* RPC program */
 	struct svc_stat *	sv_stats;	/* RPC statistics */
 	spinlock_t		sv_lock;
+	struct kref		sv_refcnt;
 	unsigned int		sv_nrthreads;	/* # of server threads */
 	unsigned int		sv_maxconn;	/* max connections allowed or
 						 * '0' causing max to be based
@@ -102,7 +84,8 @@ struct svc_serv {
 
 	unsigned int		sv_nrpools;	/* number of thread pools */
 	struct svc_pool *	sv_pools;	/* array of thread pools */
-	const struct svc_serv_ops *sv_ops;	/* server operations */
+	int			(*sv_threadfn)(void *data);
+
 #if defined(CONFIG_SUNRPC_BACKCHANNEL)
 	struct list_head	sv_cb_list;	/* queue for callback requests
 						 * that arrive over the same
@@ -114,15 +97,43 @@ struct svc_serv {
 #endif /* CONFIG_SUNRPC_BACKCHANNEL */
 };
 
-/*
- * We use sv_nrthreads as a reference count.  svc_destroy() drops
- * this refcount, so we need to bump it up around operations that
- * change the number of threads.  Horrible, but there it is.
- * Should be called with the "service mutex" held.
+/**
+ * svc_get() - increment reference count on a SUNRPC serv
+ * @serv:  the svc_serv to have count incremented
+ *
+ * Returns: the svc_serv that was passed in.
  */
-static inline void svc_get(struct svc_serv *serv)
+static inline struct svc_serv *svc_get(struct svc_serv *serv)
 {
-	serv->sv_nrthreads++;
+	kref_get(&serv->sv_refcnt);
+	return serv;
+}
+
+void svc_destroy(struct kref *);
+
+/**
+ * svc_put - decrement reference count on a SUNRPC serv
+ * @serv:  the svc_serv to have count decremented
+ *
+ * When the reference count reaches zero, svc_destroy()
+ * is called to clean up and free the serv.
+ */
+static inline void svc_put(struct svc_serv *serv)
+{
+	kref_put(&serv->sv_refcnt, svc_destroy);
+}
+
+/**
+ * svc_put_not_last - decrement non-final reference count on SUNRPC serv
+ * @serv:  the svc_serv to have count decremented
+ *
+ * Returns: %true is refcount was decremented.
+ *
+ * If the refcount is 1, it is not decremented and instead failure is reported.
+ */
+static inline bool svc_put_not_last(struct svc_serv *serv)
+{
+	return refcount_dec_not_one(&serv->sv_refcnt.refcount);
 }
 
 /*
@@ -384,6 +395,7 @@ struct svc_deferred_req {
 	size_t			addrlen;
 	struct sockaddr_storage	daddr;	/* where reply must come from */
 	size_t			daddrlen;
+	void			*xprt_ctxt;
 	struct cache_deferred_req handle;
 	size_t			xprt_hlen;
 	int			argslen;
@@ -443,10 +455,7 @@ struct svc_version {
 	/* Need xprt with congestion control */
 	bool			vs_need_cong_ctrl;
 
-	/* Override dispatch function (e.g. when caching replies).
-	 * A return value of 0 means drop the request. 
-	 * vs_dispatch == NULL means use default dispatcher.
-	 */
+	/* Dispatch function */
 	int			(*vs_dispatch)(struct svc_rqst *, __be32 *);
 };
 
@@ -457,9 +466,11 @@ struct svc_procedure {
 	/* process the request: */
 	__be32			(*pc_func)(struct svc_rqst *);
 	/* XDR decode args: */
-	int			(*pc_decode)(struct svc_rqst *, __be32 *data);
+	bool			(*pc_decode)(struct svc_rqst *rqstp,
+					     struct xdr_stream *xdr);
 	/* XDR encode result: */
-	int			(*pc_encode)(struct svc_rqst *, __be32 *data);
+	bool			(*pc_encode)(struct svc_rqst *rqstp,
+					     struct xdr_stream *xdr);
 	/* XDR free result: */
 	void			(*pc_release)(struct svc_rqst *);
 	unsigned int		pc_argsize;	/* argument struct size */
@@ -470,53 +481,23 @@ struct svc_procedure {
 };
 
 /*
- * Mode for mapping cpus to pools.
- */
-enum {
-	SVC_POOL_AUTO = -1,	/* choose one of the others */
-	SVC_POOL_GLOBAL,	/* no mapping, just a single global pool
-				 * (legacy & UP mode) */
-	SVC_POOL_PERCPU,	/* one pool per cpu */
-	SVC_POOL_PERNODE	/* one pool per numa node */
-};
-
-struct svc_pool_map {
-	int count;			/* How many svc_servs use us */
-	int mode;			/* Note: int not enum to avoid
-					 * warnings about "enumeration value
-					 * not handled in switch" */
-	unsigned int npools;
-	unsigned int *pool_to;		/* maps pool id to cpu or node */
-	unsigned int *to_pool;		/* maps cpu or node to pool id */
-};
-
-extern struct svc_pool_map svc_pool_map;
-
-/*
  * Function prototypes.
  */
 int svc_rpcb_setup(struct svc_serv *serv, struct net *net);
 void svc_rpcb_cleanup(struct svc_serv *serv, struct net *net);
 int svc_bind(struct svc_serv *serv, struct net *net);
 struct svc_serv *svc_create(struct svc_program *, unsigned int,
-			    const struct svc_serv_ops *);
+			    int (*threadfn)(void *data));
 struct svc_rqst *svc_rqst_alloc(struct svc_serv *serv,
 					struct svc_pool *pool, int node);
-struct svc_rqst *svc_prepare_thread(struct svc_serv *serv,
-					struct svc_pool *pool, int node);
 void		   svc_rqst_replace_page(struct svc_rqst *rqstp,
 					 struct page *page);
 void		   svc_rqst_free(struct svc_rqst *);
 void		   svc_exit_thread(struct svc_rqst *);
-unsigned int	   svc_pool_map_get(void);
-void		   svc_pool_map_put(void);
 struct svc_serv *  svc_create_pooled(struct svc_program *, unsigned int,
-			const struct svc_serv_ops *);
+				     int (*threadfn)(void *data));
 int		   svc_set_num_threads(struct svc_serv *, struct svc_pool *, int);
-int		   svc_set_num_threads_sync(struct svc_serv *, struct svc_pool *, int);
 int		   svc_pool_stats_open(struct svc_serv *serv, struct file *file);
-void		   svc_destroy(struct svc_serv *);
-void		   svc_shutdown_net(struct svc_serv *, struct net *);
 int		   svc_process(struct svc_rqst *);
 int		   bc_svc_process(struct svc_serv *, struct rpc_rqst *,
 			struct svc_rqst *);
@@ -532,8 +513,7 @@ int		   svc_encode_result_payload(struct svc_rqst *rqstp,
 					     unsigned int offset,
 					     unsigned int length);
 unsigned int	   svc_fill_write_vector(struct svc_rqst *rqstp,
-					 struct page **pages,
-					 struct kvec *first, size_t total);
+					 struct xdr_buf *payload);
 char		  *svc_fill_symlink_pathname(struct svc_rqst *rqstp,
 					     struct kvec *first, void *p,
 					     size_t total);
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
index 571f605bc91e..d42a75b3be10 100644
--- a/include/linux/sunrpc/svc_xprt.h
+++ b/include/linux/sunrpc/svc_xprt.h
@@ -28,6 +28,7 @@ struct svc_xprt_ops {
 	void		(*xpo_free)(struct svc_xprt *);
 	void		(*xpo_secure_port)(struct svc_rqst *rqstp);
 	void		(*xpo_kill_temp_xprt)(struct svc_xprt *);
+	void		(*xpo_start_tls)(struct svc_xprt *);
 };
 
 struct svc_xprt_class {
@@ -88,6 +89,7 @@ struct svc_xprt {
 	struct list_head	xpt_users;	/* callbacks on free */
 
 	struct net		*xpt_net;
+	netns_tracker		ns_tracker;
 	const struct cred	*xpt_cred;
 	struct rpc_xprt		*xpt_bc_xprt;	/* NFSv4.1 backchannel */
 	struct rpc_xprt_switch	*xpt_bc_xps;	/* NFSv4.1 backchannel */
@@ -127,15 +129,16 @@ int	svc_reg_xprt_class(struct svc_xprt_class *);
 void	svc_unreg_xprt_class(struct svc_xprt_class *);
 void	svc_xprt_init(struct net *, struct svc_xprt_class *, struct svc_xprt *,
 		      struct svc_serv *);
-int	svc_create_xprt(struct svc_serv *, const char *, struct net *,
-			const int, const unsigned short, int,
-			const struct cred *);
+int	svc_xprt_create(struct svc_serv *serv, const char *xprt_name,
+			struct net *net, const int family,
+			const unsigned short port, int flags,
+			const struct cred *cred);
+void	svc_xprt_destroy_all(struct svc_serv *serv, struct net *net);
 void	svc_xprt_received(struct svc_xprt *xprt);
-void	svc_xprt_do_enqueue(struct svc_xprt *xprt);
 void	svc_xprt_enqueue(struct svc_xprt *xprt);
 void	svc_xprt_put(struct svc_xprt *xprt);
 void	svc_xprt_copy_addrs(struct svc_rqst *rqstp, struct svc_xprt *xprt);
-void	svc_close_xprt(struct svc_xprt *xprt);
+void	svc_xprt_close(struct svc_xprt *xprt);
 int	svc_port_is_privileged(struct sockaddr *sin);
 int	svc_print_xprts(char *buf, int maxlen);
 struct	svc_xprt *svc_find_xprt(struct svc_serv *serv, const char *xcl_name,
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index b519609af1d0..4417f667c757 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -731,6 +731,8 @@ xdr_stream_decode_uint32_array(struct xdr_stream *xdr,
 
 	if (unlikely(xdr_stream_decode_u32(xdr, &len) < 0))
 		return -EBADMSG;
+	if (len > SIZE_MAX / sizeof(*p))
+		return -EBADMSG;
 	p = xdr_inline_decode(xdr, len * sizeof(*p));
 	if (unlikely(!p))
 		return -EBADMSG;
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index 955ea4d7af0b..522bbf937957 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -139,9 +139,12 @@ struct rpc_xprt_ops {
 	void		(*rpcbind)(struct rpc_task *task);
 	void		(*set_port)(struct rpc_xprt *xprt, unsigned short port);
 	void		(*connect)(struct rpc_xprt *xprt, struct rpc_task *task);
+	int		(*get_srcaddr)(struct rpc_xprt *xprt, char *buf,
+				       size_t buflen);
+	unsigned short	(*get_srcport)(struct rpc_xprt *xprt);
 	int		(*buf_alloc)(struct rpc_task *task);
 	void		(*buf_free)(struct rpc_task *task);
-	void		(*prepare_request)(struct rpc_rqst *req);
+	int		(*prepare_request)(struct rpc_rqst *req);
 	int		(*send_request)(struct rpc_rqst *req);
 	void		(*wait_for_reply_request)(struct rpc_task *task);
 	void		(*timer)(struct rpc_xprt *xprt, struct rpc_task *task);
@@ -284,6 +287,7 @@ struct rpc_xprt {
 	} stat;
 
 	struct net		*xprt_net;
+	netns_tracker		ns_tracker;
 	const char		*servername;
 	const char		*address_strings[RPC_DISPLAY_MAX];
 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
@@ -354,10 +358,9 @@ int			xprt_reserve_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task);
 void			xprt_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task);
 void			xprt_free_slot(struct rpc_xprt *xprt,
 				       struct rpc_rqst *req);
-void			xprt_request_prepare(struct rpc_rqst *req);
 bool			xprt_prepare_transmit(struct rpc_task *task);
 void			xprt_request_enqueue_transmit(struct rpc_task *task);
-void			xprt_request_enqueue_receive(struct rpc_task *task);
+int			xprt_request_enqueue_receive(struct rpc_task *task);
 void			xprt_request_wait_receive(struct rpc_task *task);
 void			xprt_request_dequeue_xprt(struct rpc_task *task);
 bool			xprt_request_need_retransmit(struct rpc_task *task);
diff --git a/include/linux/sunrpc/xprtsock.h b/include/linux/sunrpc/xprtsock.h
index 8c2a712cb242..38284f25eddf 100644
--- a/include/linux/sunrpc/xprtsock.h
+++ b/include/linux/sunrpc/xprtsock.h
@@ -10,7 +10,6 @@
 
 int		init_socket_xprt(void);
 void		cleanup_socket_xprt(void);
-unsigned short	get_srcport(struct rpc_xprt *);
 
 #define RPC_MIN_RESVPORT	(1U)
 #define RPC_MAX_RESVPORT	(65535U)
@@ -89,5 +88,7 @@ struct sock_xprt {
 #define XPRT_SOCK_WAKE_WRITE	(5)
 #define XPRT_SOCK_WAKE_PENDING	(6)
 #define XPRT_SOCK_WAKE_DISCONNECT	(7)
+#define XPRT_SOCK_CONNECT_SENT	(8)
+#define XPRT_SOCK_NOSPACE	(9)
 
 #endif /* _LINUX_SUNRPC_XPRTSOCK_H */
diff --git a/include/linux/surface_aggregator/controller.h b/include/linux/surface_aggregator/controller.h
index 068e1982ad37..74bfdffaf7b0 100644
--- a/include/linux/surface_aggregator/controller.h
+++ b/include/linux/surface_aggregator/controller.h
@@ -792,8 +792,8 @@ enum ssam_event_mask {
 #define SSAM_EVENT_REGISTRY_KIP	\
 	SSAM_EVENT_REGISTRY(SSAM_SSH_TC_KIP, 0x02, 0x27, 0x28)
 
-#define SSAM_EVENT_REGISTRY_REG \
-	SSAM_EVENT_REGISTRY(SSAM_SSH_TC_REG, 0x02, 0x01, 0x02)
+#define SSAM_EVENT_REGISTRY_REG(tid)\
+	SSAM_EVENT_REGISTRY(SSAM_SSH_TC_REG, tid, 0x01, 0x02)
 
 /**
  * enum ssam_event_notifier_flags - Flags for event notifiers.
diff --git a/include/linux/surface_aggregator/device.h b/include/linux/surface_aggregator/device.h
index f636c5310321..cc257097eb05 100644
--- a/include/linux/surface_aggregator/device.h
+++ b/include/linux/surface_aggregator/device.h
@@ -319,6 +319,15 @@ void ssam_device_driver_unregister(struct ssam_device_driver *d);
 		      ssam_device_driver_unregister)
 
 
+/* -- Helpers for controller and hub devices. ------------------------------- */
+
+#ifdef CONFIG_SURFACE_AGGREGATOR_BUS
+void ssam_remove_clients(struct device *dev);
+#else /* CONFIG_SURFACE_AGGREGATOR_BUS */
+static inline void ssam_remove_clients(struct device *dev) {}
+#endif /* CONFIG_SURFACE_AGGREGATOR_BUS */
+
+
 /* -- Helpers for client-device requests. ----------------------------------- */
 
 /**
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 8af13ba60c7e..300273ff40cc 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -430,15 +430,7 @@ struct platform_hibernation_ops {
 
 #ifdef CONFIG_HIBERNATION
 /* kernel/power/snapshot.c */
-extern void __register_nosave_region(unsigned long b, unsigned long e, int km);
-static inline void __init register_nosave_region(unsigned long b, unsigned long e)
-{
-	__register_nosave_region(b, e, 0);
-}
-static inline void __init register_nosave_region_late(unsigned long b, unsigned long e)
-{
-	__register_nosave_region(b, e, 1);
-}
+extern void register_nosave_region(unsigned long b, unsigned long e);
 extern int swsusp_page_is_forbidden(struct page *);
 extern void swsusp_set_page_free(struct page *);
 extern void swsusp_unset_page_free(struct page *);
@@ -446,6 +438,7 @@ extern unsigned long get_safe_page(gfp_t gfp_mask);
 extern asmlinkage int swsusp_arch_suspend(void);
 extern asmlinkage int swsusp_arch_resume(void);
 
+extern u32 swsusp_hardware_signature;
 extern void hibernation_set_ops(const struct platform_hibernation_ops *ops);
 extern int hibernate(void);
 extern bool system_entering_hibernation(void);
@@ -457,7 +450,6 @@ int pfn_is_nosave(unsigned long pfn);
 int hibernate_quiet_exec(int (*func)(void *data), void *data);
 #else /* CONFIG_HIBERNATION */
 static inline void register_nosave_region(unsigned long b, unsigned long e) {}
-static inline void register_nosave_region_late(unsigned long b, unsigned long e) {}
 static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
 static inline void swsusp_set_page_free(struct page *p) {}
 static inline void swsusp_unset_page_free(struct page *p) {}
@@ -505,14 +497,14 @@ extern void ksys_sync_helper(void);
 
 /* drivers/base/power/wakeup.c */
 extern bool events_check_enabled;
-extern unsigned int pm_wakeup_irq;
 extern suspend_state_t pm_suspend_target_state;
 
 extern bool pm_wakeup_pending(void);
 extern void pm_system_wakeup(void);
 extern void pm_system_cancel_wakeup(void);
-extern void pm_wakeup_clear(bool reset);
+extern void pm_wakeup_clear(unsigned int irq_number);
 extern void pm_system_irq_wakeup(unsigned int irq_number);
+extern unsigned int pm_wakeup_irq(void);
 extern bool pm_get_wakeup_count(unsigned int *count, bool block);
 extern bool pm_save_wakeup_count(unsigned int count);
 extern void pm_wakep_autosleep_enabled(bool set);
diff --git a/include/linux/swait_api.h b/include/linux/swait_api.h
new file mode 100644
index 000000000000..1eeaaaaa5ea7
--- /dev/null
+++ b/include/linux/swait_api.h
@@ -0,0 +1 @@
+#include <linux/swait.h>
diff --git a/include/linux/swap.h b/include/linux/swap.h
index ba52f3a3478e..27093b477c5f 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -320,22 +320,30 @@ struct vma_swap_readahead {
 #endif
 };
 
+static inline swp_entry_t folio_swap_entry(struct folio *folio)
+{
+	swp_entry_t entry = { .val = page_private(&folio->page) };
+	return entry;
+}
+
 /* linux/mm/workingset.c */
 void workingset_age_nonresident(struct lruvec *lruvec, unsigned long nr_pages);
-void *workingset_eviction(struct page *page, struct mem_cgroup *target_memcg);
-void workingset_refault(struct page *page, void *shadow);
-void workingset_activation(struct page *page);
+void *workingset_eviction(struct folio *folio, struct mem_cgroup *target_memcg);
+void workingset_refault(struct folio *folio, void *shadow);
+void workingset_activation(struct folio *folio);
 
 /* Only track the nodes of mappings with shadow entries */
 void workingset_update_node(struct xa_node *node);
+extern struct list_lru shadow_nodes;
 #define mapping_set_update(xas, mapping) do {				\
-	if (!dax_mapping(mapping) && !shmem_mapping(mapping))		\
+	if (!dax_mapping(mapping) && !shmem_mapping(mapping)) {		\
 		xas_set_update(xas, workingset_update_node);		\
+		xas_set_lru(xas, &shadow_nodes);			\
+	}								\
 } while (0)
 
 /* linux/mm/page_alloc.c */
 extern unsigned long totalreserve_pages;
-extern unsigned long nr_free_buffer_pages(void);
 
 /* Definition of global_zone_page_state not available yet */
 #define nr_free_pages() global_zone_page_state(NR_FREE_PAGES)
@@ -344,9 +352,11 @@ extern unsigned long nr_free_buffer_pages(void);
 /* linux/mm/swap.c */
 extern void lru_note_cost(struct lruvec *lruvec, bool file,
 			  unsigned int nr_pages);
-extern void lru_note_cost_page(struct page *);
+extern void lru_note_cost_folio(struct folio *);
+extern void folio_add_lru(struct folio *);
 extern void lru_cache_add(struct page *);
-extern void mark_page_accessed(struct page *);
+void mark_page_accessed(struct page *);
+void folio_mark_accessed(struct folio *);
 
 extern atomic_t lru_disable_count;
 
@@ -365,8 +375,6 @@ extern void lru_add_drain(void);
 extern void lru_add_drain_cpu(int cpu);
 extern void lru_add_drain_cpu_zone(struct zone *zone);
 extern void lru_add_drain_all(void);
-extern void rotate_reclaimable_page(struct page *page);
-extern void deactivate_file_page(struct page *page);
 extern void deactivate_page(struct page *page);
 extern void mark_page_lazyfree(struct page *page);
 extern void swap_setup(void);
@@ -378,7 +386,6 @@ extern void lru_cache_add_inactive_or_unevictable(struct page *page,
 extern unsigned long zone_reclaimable_pages(struct zone *zone);
 extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
 					gfp_t gfp_mask, nodemask_t *mask);
-extern bool __isolate_lru_page_prepare(struct page *page, isolate_mode_t mode);
 extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *memcg,
 						  unsigned long nr_pages,
 						  gfp_t gfp_mask,
@@ -389,7 +396,7 @@ extern unsigned long mem_cgroup_shrink_node(struct mem_cgroup *mem,
 						unsigned long *nr_scanned);
 extern unsigned long shrink_all_memory(unsigned long nr_pages);
 extern int vm_swappiness;
-extern int remove_mapping(struct address_space *mapping, struct page *page);
+long remove_mapping(struct address_space *mapping, struct folio *folio);
 
 extern unsigned long reclaim_pages(struct list_head *page_list);
 #ifdef CONFIG_NUMA
@@ -421,7 +428,7 @@ extern int swap_writepage(struct page *page, struct writeback_control *wbc);
 extern void end_swap_bio_write(struct bio *bio);
 extern int __swap_writepage(struct page *page, struct writeback_control *wbc,
 	bio_end_io_t end_write_func);
-extern int swap_set_page_dirty(struct page *page);
+bool swap_dirty_folio(struct address_space *mapping, struct folio *folio);
 
 int add_swap_extent(struct swap_info_struct *sis, unsigned long start_page,
 		unsigned long nr_pages, sector_t start_block);
@@ -508,7 +515,6 @@ extern int __swp_swapcount(swp_entry_t entry);
 extern int swp_swapcount(swp_entry_t entry);
 extern struct swap_info_struct *page_swap_info(struct page *);
 extern struct swap_info_struct *swp_swap_info(swp_entry_t entry);
-extern bool reuse_swap_page(struct page *, int *);
 extern int try_to_free_swap(struct page *);
 struct backing_dev_info;
 extern int init_swap_address_space(unsigned int type, unsigned long nr_pages);
@@ -674,9 +680,6 @@ static inline int swp_swapcount(swp_entry_t entry)
 	return 0;
 }
 
-#define reuse_swap_page(page, total_map_swapcount) \
-	(page_trans_huge_mapcount(page, total_map_swapcount) == 1)
-
 static inline int try_to_free_swap(struct page *page)
 {
 	return 0;
@@ -735,7 +738,7 @@ static inline void cgroup_throttle_swaprate(struct page *page, gfp_t gfp_mask)
 #endif
 
 #ifdef CONFIG_MEMCG_SWAP
-extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry);
+void mem_cgroup_swapout(struct folio *folio, swp_entry_t entry);
 extern int __mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry);
 static inline int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry)
 {
@@ -755,7 +758,7 @@ static inline void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_p
 extern long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg);
 extern bool mem_cgroup_swap_full(struct page *page);
 #else
-static inline void mem_cgroup_swapout(struct page *page, swp_entry_t entry)
+static inline void mem_cgroup_swapout(struct folio *folio, swp_entry_t entry)
 {
 }
 
diff --git a/include/linux/swapfile.h b/include/linux/swapfile.h
index e06febf62978..54078542134c 100644
--- a/include/linux/swapfile.h
+++ b/include/linux/swapfile.h
@@ -6,10 +6,7 @@
  * these were static in swapfile.c but frontswap.c needs them and we don't
  * want to expose them to the dozens of source files that include swap.h
  */
-extern spinlock_t swap_lock;
-extern struct plist_head swap_active_head;
 extern struct swap_info_struct *swap_info[];
-extern int try_to_unuse(unsigned int, bool, unsigned long);
 extern unsigned long generic_max_swapfile_size(void);
 extern unsigned long max_swapfile_size(void);
 
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index b0cb2a9973f4..f6c3638255d5 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -45,7 +45,8 @@ extern void __init swiotlb_update_mem_attributes(void);
 
 phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, phys_addr_t phys,
 		size_t mapping_size, size_t alloc_size,
-		enum dma_data_direction dir, unsigned long attrs);
+		unsigned int alloc_aligned_mask, enum dma_data_direction dir,
+		unsigned long attrs);
 
 extern void swiotlb_tbl_unmap_single(struct device *hwdev,
 				     phys_addr_t tlb_addr,
@@ -72,6 +73,9 @@ extern enum swiotlb_force swiotlb_force;
  * @end:	The end address of the swiotlb memory pool. Used to do a quick
  *		range check to see if the memory was in fact allocated by this
  *		API.
+ * @vaddr:	The vaddr of the swiotlb memory pool. The swiotlb memory pool
+ *		may be remapped in the memory encrypted case and store virtual
+ *		address for bounce buffer operation.
  * @nslabs:	The number of IO TLB blocks (in groups of 64) between @start and
  *		@end. For default swiotlb, this is command line adjustable via
  *		setup_io_tlb_npages.
@@ -91,6 +95,7 @@ extern enum swiotlb_force swiotlb_force;
 struct io_tlb_mem {
 	phys_addr_t start;
 	phys_addr_t end;
+	void *vaddr;
 	unsigned long nslabs;
 	unsigned long used;
 	unsigned int index;
@@ -185,4 +190,6 @@ static inline bool is_swiotlb_for_alloc(struct device *dev)
 }
 #endif /* CONFIG_DMA_RESTRICTED_POOL */
 
+extern phys_addr_t swiotlb_unencrypted_base;
+
 #endif /* __LINUX_SWIOTLB_H */
diff --git a/include/linux/switchtec.h b/include/linux/switchtec.h
index 082f1d51957a..48fabe36509e 100644
--- a/include/linux/switchtec.h
+++ b/include/linux/switchtec.h
@@ -19,6 +19,7 @@
 #define SWITCHTEC_EVENT_EN_CLI   BIT(2)
 #define SWITCHTEC_EVENT_EN_IRQ   BIT(3)
 #define SWITCHTEC_EVENT_FATAL    BIT(4)
+#define SWITCHTEC_EVENT_NOT_SUPP BIT(31)
 
 #define SWITCHTEC_DMA_MRPC_EN	BIT(0)
 
@@ -336,8 +337,6 @@ enum {
 	NTB_CTRL_REQ_ID_EN = 1 << 0,
 
 	NTB_CTRL_LUT_EN = 1 << 0,
-
-	NTB_PART_CTRL_ID_PROT_DIS = 1 << 0,
 };
 
 struct ntb_ctrl_regs {
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 252243c7783d..a34b0f9a9972 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -58,6 +58,7 @@ struct mq_attr;
 struct compat_stat;
 struct old_timeval32;
 struct robust_list_head;
+struct futex_waitv;
 struct getcpu_cache;
 struct old_linux_dirent;
 struct perf_event_attr;
@@ -289,10 +290,6 @@ static inline void addr_limit_user_check(void)
 		return;
 #endif
 
-	if (CHECK_DATA_CORRUPTION(uaccess_kernel(),
-				  "Invalid address limit on user-mode return"))
-		force_sig(SIGKILL);
-
 #ifdef TIF_FSCHECK
 	clear_thread_flag(TIF_FSCHECK);
 #endif
@@ -610,7 +607,7 @@ asmlinkage long sys_waitid(int which, pid_t pid,
 asmlinkage long sys_set_tid_address(int __user *tidptr);
 asmlinkage long sys_unshare(unsigned long unshare_flags);
 
-/* kernel/futex.c */
+/* kernel/futex/syscalls.c */
 asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val,
 			  const struct __kernel_timespec __user *utime,
 			  u32 __user *uaddr2, u32 val3);
@@ -623,6 +620,10 @@ asmlinkage long sys_get_robust_list(int pid,
 asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
 				    size_t len);
 
+asmlinkage long sys_futex_waitv(struct futex_waitv *waiters,
+				unsigned int nr_futexes, unsigned int flags,
+				struct __kernel_timespec __user *timeout, clockid_t clockid);
+
 /* kernel/hrtimer.c */
 asmlinkage long sys_nanosleep(struct __kernel_timespec __user *rqtp,
 			      struct __kernel_timespec __user *rmtp);
@@ -1052,6 +1053,9 @@ asmlinkage long sys_landlock_add_rule(int ruleset_fd, enum landlock_rule_type ru
 		const void __user *rule_attr, __u32 flags);
 asmlinkage long sys_landlock_restrict_self(int ruleset_fd, __u32 flags);
 asmlinkage long sys_memfd_secret(unsigned int flags);
+asmlinkage long sys_set_mempolicy_home_node(unsigned long start, unsigned long len,
+					    unsigned long home_node,
+					    unsigned long flags);
 
 /*
  * Architecture-specific system calls
diff --git a/include/linux/syscalls_api.h b/include/linux/syscalls_api.h
new file mode 100644
index 000000000000..23e012b04db4
--- /dev/null
+++ b/include/linux/syscalls_api.h
@@ -0,0 +1 @@
+#include <linux/syscalls.h>
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 1fa2b69c6fc3..6353d6db69b2 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -38,12 +38,28 @@ struct ctl_table_header;
 struct ctl_dir;
 
 /* Keep the same order as in fs/proc/proc_sysctl.c */
-#define SYSCTL_ZERO	((void *)&sysctl_vals[0])
-#define SYSCTL_ONE	((void *)&sysctl_vals[1])
-#define SYSCTL_INT_MAX	((void *)&sysctl_vals[2])
+#define SYSCTL_NEG_ONE			((void *)&sysctl_vals[0])
+#define SYSCTL_ZERO			((void *)&sysctl_vals[1])
+#define SYSCTL_ONE			((void *)&sysctl_vals[2])
+#define SYSCTL_TWO			((void *)&sysctl_vals[3])
+#define SYSCTL_FOUR			((void *)&sysctl_vals[4])
+#define SYSCTL_ONE_HUNDRED		((void *)&sysctl_vals[5])
+#define SYSCTL_TWO_HUNDRED		((void *)&sysctl_vals[6])
+#define SYSCTL_ONE_THOUSAND		((void *)&sysctl_vals[7])
+#define SYSCTL_THREE_THOUSAND		((void *)&sysctl_vals[8])
+#define SYSCTL_INT_MAX			((void *)&sysctl_vals[9])
+
+/* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
+#define SYSCTL_MAXOLDUID		((void *)&sysctl_vals[10])
 
 extern const int sysctl_vals[];
 
+#define SYSCTL_LONG_ZERO	((void *)&sysctl_long_vals[0])
+#define SYSCTL_LONG_ONE		((void *)&sysctl_long_vals[1])
+#define SYSCTL_LONG_MAX		((void *)&sysctl_long_vals[2])
+
+extern const unsigned long sysctl_long_vals[];
+
 typedef int proc_handler(struct ctl_table *ctl, int write, void *buffer,
 		size_t *lenp, loff_t *ppos);
 
@@ -178,6 +194,20 @@ struct ctl_path {
 
 #ifdef CONFIG_SYSCTL
 
+#define DECLARE_SYSCTL_BASE(_name, _table)				\
+static struct ctl_table _name##_base_table[] = {			\
+	{								\
+		.procname	= #_name,				\
+		.mode		= 0555,					\
+		.child		= _table,				\
+	},								\
+	{ },								\
+}
+
+extern int __register_sysctl_base(struct ctl_table *base_table);
+
+#define register_sysctl_base(_name) __register_sysctl_base(_name##_base_table)
+
 void proc_sys_poll_notify(struct ctl_table_poll *poll);
 
 extern void setup_sysctl_set(struct ctl_table_set *p,
@@ -198,8 +228,19 @@ struct ctl_table_header *register_sysctl_paths(const struct ctl_path *path,
 
 void unregister_sysctl_table(struct ctl_table_header * table);
 
-extern int sysctl_init(void);
+extern int sysctl_init_bases(void);
+extern void __register_sysctl_init(const char *path, struct ctl_table *table,
+				 const char *table_name);
+#define register_sysctl_init(path, table) __register_sysctl_init(path, table, #table)
+extern struct ctl_table_header *register_sysctl_mount_point(const char *path);
+
 void do_sysctl_args(void);
+int do_proc_douintvec(struct ctl_table *table, int write,
+		      void *buffer, size_t *lenp, loff_t *ppos,
+		      int (*conv)(unsigned long *lvalp,
+				  unsigned int *valp,
+				  int write, void *data),
+		      void *data);
 
 extern int pwrsw_enabled;
 extern int unaligned_enabled;
@@ -207,16 +248,28 @@ extern int unaligned_dump_stack;
 extern int no_unaligned_warning;
 
 extern struct ctl_table sysctl_mount_point[];
-extern struct ctl_table random_table[];
-extern struct ctl_table firmware_config_table[];
-extern struct ctl_table epoll_table[];
 
 #else /* CONFIG_SYSCTL */
+
+#define DECLARE_SYSCTL_BASE(_name, _table)
+
+static inline int __register_sysctl_base(struct ctl_table *base_table)
+{
+	return 0;
+}
+
+#define register_sysctl_base(table) __register_sysctl_base(table)
+
 static inline struct ctl_table_header *register_sysctl_table(struct ctl_table * table)
 {
 	return NULL;
 }
 
+static inline struct ctl_table_header *register_sysctl_mount_point(const char *path)
+{
+	return NULL;
+}
+
 static inline struct ctl_table_header *register_sysctl_paths(
 			const struct ctl_path *path, struct ctl_table *table)
 {
diff --git a/include/linux/t10-pi.h b/include/linux/t10-pi.h
index 96305a64a5a7..248f4ac95642 100644
--- a/include/linux/t10-pi.h
+++ b/include/linux/t10-pi.h
@@ -3,7 +3,7 @@
 #define _LINUX_T10_PI_H
 
 #include <linux/types.h>
-#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
 
 /*
  * A T10 PI-capable target device can be formatted with different
@@ -53,4 +53,33 @@ extern const struct blk_integrity_profile t10_pi_type1_ip;
 extern const struct blk_integrity_profile t10_pi_type3_crc;
 extern const struct blk_integrity_profile t10_pi_type3_ip;
 
+struct crc64_pi_tuple {
+	__be64 guard_tag;
+	__be16 app_tag;
+	__u8   ref_tag[6];
+};
+
+/**
+ * lower_48_bits() - return bits 0-47 of a number
+ * @n: the number we're accessing
+ */
+static inline u64 lower_48_bits(u64 n)
+{
+	return n & ((1ull << 48) - 1);
+}
+
+static inline u64 ext_pi_ref_tag(struct request *rq)
+{
+	unsigned int shift = ilog2(queue_logical_block_size(rq->q));
+
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+	if (rq->q->integrity.interval_exp)
+		shift = rq->q->integrity.interval_exp;
+#endif
+	return lower_48_bits(blk_rq_pos(rq) >> (shift - SECTOR_SHIFT));
+}
+
+extern const struct blk_integrity_profile ext_pi_type1_crc64;
+extern const struct blk_integrity_profile ext_pi_type3_crc64;
+
 #endif
diff --git a/include/linux/task_work.h b/include/linux/task_work.h
index 5b8a93f288bb..897494b597ba 100644
--- a/include/linux/task_work.h
+++ b/include/linux/task_work.h
@@ -19,6 +19,11 @@ enum task_work_notify_mode {
 	TWA_SIGNAL,
 };
 
+static inline bool task_work_pending(struct task_struct *task)
+{
+	return READ_ONCE(task->task_works);
+}
+
 int task_work_add(struct task_struct *task, struct callback_head *twork,
 			enum task_work_notify_mode mode);
 
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 48d8a363319e..1168302b7927 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -394,6 +394,7 @@ struct tcp_sock {
 	bool	is_mptcp;
 #endif
 #if IS_ENABLED(CONFIG_SMC)
+	bool	(*smc_hs_congested)(const struct sock *sk);
 	bool	syn_smc;	/* SYN includes SMC */
 #endif
 
@@ -512,11 +513,13 @@ static inline u16 tcp_mss_clamp(const struct tcp_sock *tp, u16 mss)
 int tcp_skb_shift(struct sk_buff *to, struct sk_buff *from, int pcount,
 		  int shiftlen);
 
+void __tcp_sock_set_cork(struct sock *sk, bool on);
 void tcp_sock_set_cork(struct sock *sk, bool on);
 int tcp_sock_set_keepcnt(struct sock *sk, int val);
 int tcp_sock_set_keepidle_locked(struct sock *sk, int val);
 int tcp_sock_set_keepidle(struct sock *sk, int val);
 int tcp_sock_set_keepintvl(struct sock *sk, int val);
+void __tcp_sock_set_nodelay(struct sock *sk, bool on);
 void tcp_sock_set_nodelay(struct sock *sk);
 void tcp_sock_set_quickack(struct sock *sk, int val);
 int tcp_sock_set_syncnt(struct sock *sk, int val);
diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h
index 3ebfea0781f1..911cad324acc 100644
--- a/include/linux/tee_drv.h
+++ b/include/linux/tee_drv.h
@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (c) 2015-2016, Linaro Limited
+ * Copyright (c) 2015-2022 Linaro Limited
  */
 
 #ifndef __TEE_DRV_H
@@ -20,14 +20,11 @@
  * specific TEE driver.
  */
 
-#define TEE_SHM_MAPPED		BIT(0)	/* Memory mapped by the kernel */
-#define TEE_SHM_DMA_BUF		BIT(1)	/* Memory with dma-buf handle */
-#define TEE_SHM_EXT_DMA_BUF	BIT(2)	/* Memory with dma-buf handle */
-#define TEE_SHM_REGISTER	BIT(3)  /* Memory registered in secure world */
-#define TEE_SHM_USER_MAPPED	BIT(4)  /* Memory mapped in user space */
-#define TEE_SHM_POOL		BIT(5)  /* Memory allocated from pool */
-#define TEE_SHM_KERNEL_MAPPED	BIT(6)  /* Memory mapped in kernel space */
-#define TEE_SHM_PRIV		BIT(7)  /* Memory private to TEE driver */
+#define TEE_SHM_DYNAMIC		BIT(0)  /* Dynamic shared memory registered */
+					/* in secure world */
+#define TEE_SHM_USER_MAPPED	BIT(1)  /* Memory mapped in user space */
+#define TEE_SHM_POOL		BIT(2)  /* Memory allocated from pool */
+#define TEE_SHM_PRIV		BIT(3)  /* Memory private to TEE driver */
 
 struct device;
 struct tee_device;
@@ -195,9 +192,13 @@ int tee_session_calc_client_uuid(uuid_t *uuid, u32 connection_method,
  * @offset:	offset of buffer in user space
  * @pages:	locked pages from userspace
  * @num_pages:	number of locked pages
- * @dmabuf:	dmabuf used to for exporting to user space
+ * @refcount:	reference counter
  * @flags:	defined by TEE_SHM_* in tee_drv.h
- * @id:		unique id of a shared memory object on this device
+ * @id:		unique id of a shared memory object on this device, shared
+ *		with user space
+ * @sec_world_id:
+ *		secure world assigned id of this shared memory object, not
+ *		used by all drivers
  *
  * This pool is only supposed to be accessed directly from the TEE
  * subsystem and from drivers that implements their own shm pool manager.
@@ -210,98 +211,46 @@ struct tee_shm {
 	unsigned int offset;
 	struct page **pages;
 	size_t num_pages;
-	struct dma_buf *dmabuf;
+	refcount_t refcount;
 	u32 flags;
 	int id;
+	u64 sec_world_id;
 };
 
 /**
- * struct tee_shm_pool_mgr - shared memory manager
+ * struct tee_shm_pool - shared memory pool
  * @ops:		operations
  * @private_data:	private data for the shared memory manager
  */
-struct tee_shm_pool_mgr {
-	const struct tee_shm_pool_mgr_ops *ops;
+struct tee_shm_pool {
+	const struct tee_shm_pool_ops *ops;
 	void *private_data;
 };
 
 /**
- * struct tee_shm_pool_mgr_ops - shared memory pool manager operations
+ * struct tee_shm_pool_ops - shared memory pool operations
  * @alloc:		called when allocating shared memory
  * @free:		called when freeing shared memory
- * @destroy_poolmgr:	called when destroying the pool manager
+ * @destroy_pool:	called when destroying the pool
  */
-struct tee_shm_pool_mgr_ops {
-	int (*alloc)(struct tee_shm_pool_mgr *poolmgr, struct tee_shm *shm,
-		     size_t size);
-	void (*free)(struct tee_shm_pool_mgr *poolmgr, struct tee_shm *shm);
-	void (*destroy_poolmgr)(struct tee_shm_pool_mgr *poolmgr);
+struct tee_shm_pool_ops {
+	int (*alloc)(struct tee_shm_pool *pool, struct tee_shm *shm,
+		     size_t size, size_t align);
+	void (*free)(struct tee_shm_pool *pool, struct tee_shm *shm);
+	void (*destroy_pool)(struct tee_shm_pool *pool);
 };
 
-/**
- * tee_shm_pool_alloc() - Create a shared memory pool from shm managers
- * @priv_mgr:	manager for driver private shared memory allocations
- * @dmabuf_mgr:	manager for dma-buf shared memory allocations
- *
- * Allocation with the flag TEE_SHM_DMA_BUF set will use the range supplied
- * in @dmabuf, others will use the range provided by @priv.
- *
- * @returns pointer to a 'struct tee_shm_pool' or an ERR_PTR on failure.
- */
-struct tee_shm_pool *tee_shm_pool_alloc(struct tee_shm_pool_mgr *priv_mgr,
-					struct tee_shm_pool_mgr *dmabuf_mgr);
-
 /*
- * tee_shm_pool_mgr_alloc_res_mem() - Create a shm manager for reserved
- * memory
+ * tee_shm_pool_alloc_res_mem() - Create a shm manager for reserved memory
  * @vaddr:	Virtual address of start of pool
  * @paddr:	Physical address of start of pool
  * @size:	Size in bytes of the pool
  *
- * @returns pointer to a 'struct tee_shm_pool_mgr' or an ERR_PTR on failure.
- */
-struct tee_shm_pool_mgr *tee_shm_pool_mgr_alloc_res_mem(unsigned long vaddr,
-							phys_addr_t paddr,
-							size_t size,
-							int min_alloc_order);
-
-/**
- * tee_shm_pool_mgr_destroy() - Free a shared memory manager
- */
-static inline void tee_shm_pool_mgr_destroy(struct tee_shm_pool_mgr *poolm)
-{
-	poolm->ops->destroy_poolmgr(poolm);
-}
-
-/**
- * struct tee_shm_pool_mem_info - holds information needed to create a shared
- * memory pool
- * @vaddr:	Virtual address of start of pool
- * @paddr:	Physical address of start of pool
- * @size:	Size in bytes of the pool
- */
-struct tee_shm_pool_mem_info {
-	unsigned long vaddr;
-	phys_addr_t paddr;
-	size_t size;
-};
-
-/**
- * tee_shm_pool_alloc_res_mem() - Create a shared memory pool from reserved
- * memory range
- * @priv_info:	 Information for driver private shared memory pool
- * @dmabuf_info: Information for dma-buf shared memory pool
- *
- * Start and end of pools will must be page aligned.
- *
- * Allocation with the flag TEE_SHM_DMA_BUF set will use the range supplied
- * in @dmabuf, others will use the range provided by @priv.
- *
  * @returns pointer to a 'struct tee_shm_pool' or an ERR_PTR on failure.
  */
-struct tee_shm_pool *
-tee_shm_pool_alloc_res_mem(struct tee_shm_pool_mem_info *priv_info,
-			   struct tee_shm_pool_mem_info *dmabuf_info);
+struct tee_shm_pool *tee_shm_pool_alloc_res_mem(unsigned long vaddr,
+						phys_addr_t paddr, size_t size,
+						int min_alloc_order);
 
 /**
  * tee_shm_pool_free() - Free a shared memory pool
@@ -310,7 +259,10 @@ tee_shm_pool_alloc_res_mem(struct tee_shm_pool_mem_info *priv_info,
  * The must be no remaining shared memory allocated from this pool when
  * this function is called.
  */
-void tee_shm_pool_free(struct tee_shm_pool *pool);
+static inline void tee_shm_pool_free(struct tee_shm_pool *pool)
+{
+	pool->ops->destroy_pool(pool);
+}
 
 /**
  * tee_get_drvdata() - Return driver_data pointer
@@ -318,43 +270,20 @@ void tee_shm_pool_free(struct tee_shm_pool *pool);
  */
 void *tee_get_drvdata(struct tee_device *teedev);
 
-/**
- * tee_shm_alloc() - Allocate shared memory
- * @ctx:	Context that allocates the shared memory
- * @size:	Requested size of shared memory
- * @flags:	Flags setting properties for the requested shared memory.
- *
- * Memory allocated as global shared memory is automatically freed when the
- * TEE file pointer is closed. The @flags field uses the bits defined by
- * TEE_SHM_* above. TEE_SHM_MAPPED must currently always be set. If
- * TEE_SHM_DMA_BUF global shared memory will be allocated and associated
- * with a dma-buf handle, else driver private memory.
- *
- * @returns a pointer to 'struct tee_shm'
- */
-struct tee_shm *tee_shm_alloc(struct tee_context *ctx, size_t size, u32 flags);
+struct tee_shm *tee_shm_alloc_priv_buf(struct tee_context *ctx, size_t size);
 struct tee_shm *tee_shm_alloc_kernel_buf(struct tee_context *ctx, size_t size);
 
-/**
- * tee_shm_register() - Register shared memory buffer
- * @ctx:	Context that registers the shared memory
- * @addr:	Address is userspace of the shared buffer
- * @length:	Length of the shared buffer
- * @flags:	Flags setting properties for the requested shared memory.
- *
- * @returns a pointer to 'struct tee_shm'
- */
-struct tee_shm *tee_shm_register(struct tee_context *ctx, unsigned long addr,
-				 size_t length, u32 flags);
+struct tee_shm *tee_shm_register_kernel_buf(struct tee_context *ctx,
+					    void *addr, size_t length);
 
 /**
- * tee_shm_is_registered() - Check if shared memory object in registered in TEE
+ * tee_shm_is_dynamic() - Check if shared memory object is of the dynamic kind
  * @shm:	Shared memory handle
- * @returns true if object is registered in TEE
+ * @returns true if object is dynamic shared memory
  */
-static inline bool tee_shm_is_registered(struct tee_shm *shm)
+static inline bool tee_shm_is_dynamic(struct tee_shm *shm)
 {
-	return shm && (shm->flags & TEE_SHM_REGISTER);
+	return shm && (shm->flags & TEE_SHM_DYNAMIC);
 }
 
 /**
@@ -582,4 +511,18 @@ struct tee_client_driver {
 #define to_tee_client_driver(d) \
 		container_of(d, struct tee_client_driver, driver)
 
+/**
+ * teedev_open() - Open a struct tee_device
+ * @teedev:	Device to open
+ *
+ * @return a pointer to struct tee_context on success or an ERR_PTR on failure.
+ */
+struct tee_context *teedev_open(struct tee_device *teedev);
+
+/**
+ * teedev_close_context() - closes a struct tee_context
+ * @ctx:	The struct tee_context to close
+ */
+void teedev_close_context(struct tee_context *ctx);
+
 #endif /*__TEE_DRV_H*/
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index 0999f6317978..9f392ec76f2b 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -118,6 +118,15 @@ static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
 	return test_bit(flag, (unsigned long *)&ti->flags);
 }
 
+/*
+ * This may be used in noinstr code, and needs to be __always_inline to prevent
+ * inadvertent instrumentation.
+ */
+static __always_inline unsigned long read_ti_thread_flags(struct thread_info *ti)
+{
+	return READ_ONCE(ti->flags);
+}
+
 #define set_thread_flag(flag) \
 	set_ti_thread_flag(current_thread_info(), flag)
 #define clear_thread_flag(flag) \
@@ -130,6 +139,11 @@ static inline int test_ti_thread_flag(struct thread_info *ti, int flag)
 	test_and_clear_ti_thread_flag(current_thread_info(), flag)
 #define test_thread_flag(flag) \
 	test_ti_thread_flag(current_thread_info(), flag)
+#define read_thread_flags() \
+	read_ti_thread_flags(current_thread_info())
+
+#define read_task_thread_flags(t) \
+	read_ti_thread_flags(task_thread_info(t))
 
 #ifdef CONFIG_GENERIC_ENTRY
 #define set_syscall_work(fl) \
@@ -195,15 +209,18 @@ __bad_copy_from(void);
 extern void __compiletime_error("copy destination size is too small")
 __bad_copy_to(void);
 
+void __copy_overflow(int size, unsigned long count);
+
 static inline void copy_overflow(int size, unsigned long count)
 {
-	WARN(1, "Buffer overflow detected (%d < %lu)!\n", size, count);
+	if (IS_ENABLED(CONFIG_BUG))
+		__copy_overflow(size, count);
 }
 
 static __always_inline __must_check bool
 check_copy_size(const void *addr, size_t bytes, bool is_source)
 {
-	int sz = __compiletime_object_size(addr);
+	int sz = __builtin_object_size(addr, 0);
 	if (unlikely(sz >= 0 && sz < bytes)) {
 		if (!__builtin_constant_p(bytes))
 			copy_overflow(sz, bytes);
diff --git a/include/linux/timex.h b/include/linux/timex.h
index 059b18eb1f1f..5745c90c8800 100644
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -75,7 +75,7 @@
  * By default we use get_cycles() for this purpose, but individual
  * architectures may override this in their asm/timex.h header file.
  */
-#define random_get_entropy()	get_cycles()
+#define random_get_entropy()	((unsigned long)get_cycles())
 #endif
 
 /*
diff --git a/include/linux/topology.h b/include/linux/topology.h
index 7634cd737061..f19bc3626297 100644
--- a/include/linux/topology.h
+++ b/include/linux/topology.h
@@ -180,24 +180,58 @@ static inline int cpu_to_mem(int cpu)
 
 #endif	/* [!]CONFIG_HAVE_MEMORYLESS_NODES */
 
+#if defined(topology_die_id) && defined(topology_die_cpumask)
+#define TOPOLOGY_DIE_SYSFS
+#endif
+#if defined(topology_cluster_id) && defined(topology_cluster_cpumask)
+#define TOPOLOGY_CLUSTER_SYSFS
+#endif
+#if defined(topology_book_id) && defined(topology_book_cpumask)
+#define TOPOLOGY_BOOK_SYSFS
+#endif
+#if defined(topology_drawer_id) && defined(topology_drawer_cpumask)
+#define TOPOLOGY_DRAWER_SYSFS
+#endif
+
 #ifndef topology_physical_package_id
 #define topology_physical_package_id(cpu)	((void)(cpu), -1)
 #endif
 #ifndef topology_die_id
 #define topology_die_id(cpu)			((void)(cpu), -1)
 #endif
+#ifndef topology_cluster_id
+#define topology_cluster_id(cpu)		((void)(cpu), -1)
+#endif
 #ifndef topology_core_id
 #define topology_core_id(cpu)			((void)(cpu), 0)
 #endif
+#ifndef topology_book_id
+#define topology_book_id(cpu)			((void)(cpu), -1)
+#endif
+#ifndef topology_drawer_id
+#define topology_drawer_id(cpu)			((void)(cpu), -1)
+#endif
+#ifndef topology_ppin
+#define topology_ppin(cpu)			((void)(cpu), 0ull)
+#endif
 #ifndef topology_sibling_cpumask
 #define topology_sibling_cpumask(cpu)		cpumask_of(cpu)
 #endif
 #ifndef topology_core_cpumask
 #define topology_core_cpumask(cpu)		cpumask_of(cpu)
 #endif
+#ifndef topology_cluster_cpumask
+#define topology_cluster_cpumask(cpu)		cpumask_of(cpu)
+#endif
 #ifndef topology_die_cpumask
 #define topology_die_cpumask(cpu)		cpumask_of(cpu)
 #endif
+#ifndef topology_book_cpumask
+#define topology_book_cpumask(cpu)		cpumask_of(cpu)
+#endif
+#ifndef topology_drawer_cpumask
+#define topology_drawer_cpumask(cpu)		cpumask_of(cpu)
+#endif
 
 #if defined(CONFIG_SCHED_SMT) && !defined(cpu_smt_mask)
 static inline const struct cpumask *cpu_smt_mask(int cpu)
@@ -206,6 +240,13 @@ static inline const struct cpumask *cpu_smt_mask(int cpu)
 }
 #endif
 
+#if defined(CONFIG_SCHED_CLUSTER) && !defined(cpu_cluster_mask)
+static inline const struct cpumask *cpu_cluster_mask(int cpu)
+{
+	return topology_cluster_cpumask(cpu);
+}
+#endif
+
 static inline const struct cpumask *cpu_cpu_mask(int cpu)
 {
 	return cpumask_of_node(cpu_to_node(cpu));
diff --git a/include/linux/torture.h b/include/linux/torture.h
index 0910c5803f35..63fa4196e51c 100644
--- a/include/linux/torture.h
+++ b/include/linux/torture.h
@@ -38,15 +38,18 @@ do {										\
 		pr_alert("%s" TORTURE_FLAG " %s\n", torture_type, s);		\
 	}									\
 } while (0)
-#define VERBOSE_TOROUT_ERRSTRING(s) \
-do {										\
-	if (verbose) {								\
-		verbose_torout_sleep();						\
-		pr_alert("%s" TORTURE_FLAG "!!! %s\n", torture_type, s);	\
-	}									\
-} while (0)
+#define TOROUT_ERRSTRING(s) \
+	pr_alert("%s" TORTURE_FLAG "!!! %s\n", torture_type, s)
 void verbose_torout_sleep(void);
 
+#define torture_init_error(firsterr)						\
+({										\
+	int ___firsterr = (firsterr);						\
+										\
+	WARN_ONCE(!IS_MODULE(CONFIG_RCU_TORTURE_TEST) && ___firsterr < 0, "Torture-test initialization failed with error code %d\n", ___firsterr); \
+	___firsterr < 0;								\
+})
+
 /* Definitions for online/offline exerciser. */
 #ifdef CONFIG_HOTPLUG_CPU
 int torture_num_online_cpus(void);
diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index aa11fe323c56..dfeb25a0362d 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -207,6 +207,7 @@ enum tpm2_return_codes {
 	TPM2_RC_INITIALIZE	= 0x0100, /* RC_VER1 */
 	TPM2_RC_FAILURE		= 0x0101,
 	TPM2_RC_DISABLED	= 0x0120,
+	TPM2_RC_UPGRADE		= 0x012D,
 	TPM2_RC_COMMAND_CODE    = 0x0143,
 	TPM2_RC_TESTING		= 0x090A, /* RC_WARN */
 	TPM2_RC_REFERENCE_H0	= 0x0910,
@@ -269,6 +270,7 @@ enum tpm2_cc_attrs {
 #define TPM_VID_INTEL    0x8086
 #define TPM_VID_WINBOND  0x1050
 #define TPM_VID_STM      0x104A
+#define TPM_VID_ATML     0x1114
 
 enum tpm_chip_flags {
 	TPM_CHIP_FLAG_TPM2		= BIT(1),
@@ -277,6 +279,7 @@ enum tpm_chip_flags {
 	TPM_CHIP_FLAG_HAVE_TIMEOUTS	= BIT(4),
 	TPM_CHIP_FLAG_ALWAYS_POWERED	= BIT(5),
 	TPM_CHIP_FLAG_FIRMWARE_POWER_MANAGED	= BIT(6),
+	TPM_CHIP_FLAG_FIRMWARE_UPGRADE	= BIT(7),
 };
 
 #define to_tpm_chip(d) container_of(d, struct tpm_chip, dev)
@@ -398,6 +401,14 @@ static inline void tpm_buf_append_u32(struct tpm_buf *buf, const u32 value)
 	tpm_buf_append(buf, (u8 *) &value2, 4);
 }
 
+/*
+ * Check if TPM device is in the firmware upgrade mode.
+ */
+static inline bool tpm_is_firmware_upgrade(struct tpm_chip *chip)
+{
+	return chip->flags & TPM_CHIP_FLAG_FIRMWARE_UPGRADE;
+}
+
 static inline u32 tpm2_rc_value(u32 rc)
 {
 	return (rc & BIT(7)) ? rc & 0xff : rc;
diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index 3e475eeb5a99..e6e95a9f07a5 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -15,6 +15,7 @@ struct array_buffer;
 struct tracer;
 struct dentry;
 struct bpf_prog;
+union bpf_attr;
 
 const char *trace_print_flags_seq(struct trace_seq *p, const char *delim,
 				  unsigned long flags,
@@ -172,6 +173,7 @@ enum trace_flag_type {
 	TRACE_FLAG_SOFTIRQ		= 0x10,
 	TRACE_FLAG_PREEMPT_RESCHED	= 0x20,
 	TRACE_FLAG_NMI			= 0x40,
+	TRACE_FLAG_BH_OFF		= 0x80,
 };
 
 #ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
@@ -314,6 +316,7 @@ enum {
 	TRACE_EVENT_FL_KPROBE_BIT,
 	TRACE_EVENT_FL_UPROBE_BIT,
 	TRACE_EVENT_FL_EPROBE_BIT,
+	TRACE_EVENT_FL_CUSTOM_BIT,
 };
 
 /*
@@ -327,6 +330,9 @@ enum {
  *  KPROBE        - Event is a kprobe
  *  UPROBE        - Event is a uprobe
  *  EPROBE        - Event is an event probe
+ *  CUSTOM        - Event is a custom event (to be attached to an exsiting tracepoint)
+ *                   This is set when the custom event has not been attached
+ *                   to a tracepoint yet, then it is cleared when it is.
  */
 enum {
 	TRACE_EVENT_FL_FILTERED		= (1 << TRACE_EVENT_FL_FILTERED_BIT),
@@ -338,6 +344,7 @@ enum {
 	TRACE_EVENT_FL_KPROBE		= (1 << TRACE_EVENT_FL_KPROBE_BIT),
 	TRACE_EVENT_FL_UPROBE		= (1 << TRACE_EVENT_FL_UPROBE_BIT),
 	TRACE_EVENT_FL_EPROBE		= (1 << TRACE_EVENT_FL_EPROBE_BIT),
+	TRACE_EVENT_FL_CUSTOM		= (1 << TRACE_EVENT_FL_CUSTOM_BIT),
 };
 
 #define TRACE_EVENT_FL_UKPROBE (TRACE_EVENT_FL_KPROBE | TRACE_EVENT_FL_UPROBE)
@@ -439,7 +446,9 @@ static inline bool bpf_prog_array_valid(struct trace_event_call *call)
 static inline const char *
 trace_event_name(struct trace_event_call *call)
 {
-	if (call->flags & TRACE_EVENT_FL_TRACEPOINT)
+	if (call->flags & TRACE_EVENT_FL_CUSTOM)
+		return call->name;
+	else if (call->flags & TRACE_EVENT_FL_TRACEPOINT)
 		return call->tp ? call->tp->name : NULL;
 	else
 		return call->name;
@@ -671,9 +680,9 @@ struct trace_event_file {
 	}								\
 	early_initcall(trace_init_perf_perm_##name);
 
-#define PERF_MAX_TRACE_SIZE	2048
+#define PERF_MAX_TRACE_SIZE	8192
 
-#define MAX_FILTER_STR_VAL	256	/* Should handle KSYM_SYMBOL_LEN */
+#define MAX_FILTER_STR_VAL	256U	/* Should handle KSYM_SYMBOL_LEN */
 
 enum event_trigger_type {
 	ETT_NONE		= (0),
@@ -698,6 +707,8 @@ event_triggers_post_call(struct trace_event_file *file,
 
 bool trace_event_ignore_this_pid(struct trace_event_file *trace_file);
 
+bool __trace_trigger_soft_disabled(struct trace_event_file *file);
+
 /**
  * trace_trigger_soft_disabled - do triggers and test if soft disabled
  * @file: The file pointer of the event to test
@@ -707,20 +718,20 @@ bool trace_event_ignore_this_pid(struct trace_event_file *trace_file);
  * triggers that require testing the fields, it will return true,
  * otherwise false.
  */
-static inline bool
+static __always_inline bool
 trace_trigger_soft_disabled(struct trace_event_file *file)
 {
 	unsigned long eflags = file->flags;
 
-	if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) {
-		if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
-			event_triggers_call(file, NULL, NULL, NULL);
-		if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
-			return true;
-		if (eflags & EVENT_FILE_FL_PID_FILTER)
-			return trace_event_ignore_this_pid(file);
-	}
-	return false;
+	if (likely(!(eflags & (EVENT_FILE_FL_TRIGGER_MODE |
+			       EVENT_FILE_FL_SOFT_DISABLED |
+			       EVENT_FILE_FL_PID_FILTER))))
+		return false;
+
+	if (likely(eflags & EVENT_FILE_FL_TRIGGER_COND))
+		return false;
+
+	return __trace_trigger_soft_disabled(file);
 }
 
 #ifdef CONFIG_BPF_EVENTS
@@ -735,6 +746,7 @@ void bpf_put_raw_tracepoint(struct bpf_raw_event_map *btp);
 int bpf_get_perf_event_info(const struct perf_event *event, u32 *prog_id,
 			    u32 *fd_type, const char **buf,
 			    u64 *probe_offset, u64 *probe_addr);
+int bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
 #else
 static inline unsigned int trace_call_bpf(struct trace_event_call *call, void *ctx)
 {
@@ -776,12 +788,18 @@ static inline int bpf_get_perf_event_info(const struct perf_event *event,
 {
 	return -EOPNOTSUPP;
 }
+static inline int
+bpf_kprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *prog)
+{
+	return -EOPNOTSUPP;
+}
 #endif
 
 enum {
 	FILTER_OTHER = 0,
 	FILTER_STATIC_STRING,
 	FILTER_DYN_STRING,
+	FILTER_RDYN_STRING,
 	FILTER_PTR_STRING,
 	FILTER_TRACE_FN,
 	FILTER_COMM,
@@ -899,3 +917,18 @@ perf_trace_buf_submit(void *raw_data, int size, int rctx, u16 type,
 #endif
 
 #endif /* _LINUX_TRACE_EVENT_H */
+
+/*
+ * Note: we keep the TRACE_CUSTOM_EVENT outside the include file ifdef protection.
+ *  This is due to the way trace custom events work. If a file includes two
+ *  trace event headers under one "CREATE_CUSTOM_TRACE_EVENTS" the first include
+ *  will override the TRACE_CUSTOM_EVENT and break the second include.
+ */
+
+#ifndef TRACE_CUSTOM_EVENT
+
+#define DECLARE_CUSTOM_EVENT_CLASS(name, proto, args, tstruct, assign, print)
+#define DEFINE_CUSTOM_EVENT(template, name, proto, args)
+#define TRACE_CUSTOM_EVENT(name, proto, args, struct, assign, print)
+
+#endif /* ifdef TRACE_CUSTOM_EVENT (see note above) */
diff --git a/include/linux/trace_recursion.h b/include/linux/trace_recursion.h
index fe95f0922526..c303f7a114e9 100644
--- a/include/linux/trace_recursion.h
+++ b/include/linux/trace_recursion.h
@@ -116,13 +116,9 @@ enum {
 
 static __always_inline int trace_get_context_bit(void)
 {
-	unsigned long pc = preempt_count();
+	unsigned char bit = interrupt_context_level();
 
-	if (!(pc & (NMI_MASK | HARDIRQ_MASK | SOFTIRQ_OFFSET)))
-		return TRACE_CTX_NORMAL;
-	else
-		return pc & NMI_MASK ? TRACE_CTX_NMI :
-			pc & HARDIRQ_MASK ? TRACE_CTX_IRQ : TRACE_CTX_SOFTIRQ;
+	return TRACE_CTX_NORMAL - bit;
 }
 
 #ifdef CONFIG_FTRACE_RECORD_RECURSION
@@ -139,6 +135,9 @@ extern void ftrace_record_recursion(unsigned long ip, unsigned long parent_ip);
 # define do_ftrace_record_recursion(ip, pip)	do { } while (0)
 #endif
 
+/*
+ * Preemption is promised to be disabled when return bit >= 0.
+ */
 static __always_inline int trace_test_and_set_recursion(unsigned long ip, unsigned long pip,
 							int start)
 {
@@ -148,8 +147,12 @@ static __always_inline int trace_test_and_set_recursion(unsigned long ip, unsign
 	bit = trace_get_context_bit() + start;
 	if (unlikely(val & (1 << bit))) {
 		/*
-		 * It could be that preempt_count has not been updated during
-		 * a switch between contexts. Allow for a single recursion.
+		 * If an interrupt occurs during a trace, and another trace
+		 * happens in that interrupt but before the preempt_count is
+		 * updated to reflect the new interrupt context, then this
+		 * will think a recursion occurred, and the event will be dropped.
+		 * Let a single instance happen via the TRANSITION_BIT to
+		 * not drop those events.
 		 */
 		bit = TRACE_CTX_TRANSITION + start;
 		if (val & (1 << bit)) {
@@ -162,11 +165,17 @@ static __always_inline int trace_test_and_set_recursion(unsigned long ip, unsign
 	current->trace_recursion = val;
 	barrier();
 
+	preempt_disable_notrace();
+
 	return bit;
 }
 
+/*
+ * Preemption will be enabled (if it was previously enabled).
+ */
 static __always_inline void trace_clear_recursion(int bit)
 {
+	preempt_enable_notrace();
 	barrier();
 	trace_recursion_clear(bit);
 }
@@ -178,7 +187,7 @@ static __always_inline void trace_clear_recursion(int bit)
  * tracing recursed in the same context (normal vs interrupt),
  *
  * Returns: -1 if a recursion happened.
- *           >= 0 if no recursion
+ *           >= 0 if no recursion.
  */
 static __always_inline int ftrace_test_recursion_trylock(unsigned long ip,
 							 unsigned long parent_ip)
diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h
deleted file mode 100644
index 2564b7434b4d..000000000000
--- a/include/linux/tracehook.h
+++ /dev/null
@@ -1,227 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Tracing hooks
- *
- * Copyright (C) 2008-2009 Red Hat, Inc.  All rights reserved.
- *
- * This file defines hook entry points called by core code where
- * user tracing/debugging support might need to do something.  These
- * entry points are called tracehook_*().  Each hook declared below
- * has a detailed kerneldoc comment giving the context (locking et
- * al) from which it is called, and the meaning of its return value.
- *
- * Each function here typically has only one call site, so it is ok
- * to have some nontrivial tracehook_*() inlines.  In all cases, the
- * fast path when no tracing is enabled should be very short.
- *
- * The purpose of this file and the tracehook_* layer is to consolidate
- * the interface that the kernel core and arch code uses to enable any
- * user debugging or tracing facility (such as ptrace).  The interfaces
- * here are carefully documented so that maintainers of core and arch
- * code do not need to think about the implementation details of the
- * tracing facilities.  Likewise, maintainers of the tracing code do not
- * need to understand all the calling core or arch code in detail, just
- * documented circumstances of each call, such as locking conditions.
- *
- * If the calling core code changes so that locking is different, then
- * it is ok to change the interface documented here.  The maintainer of
- * core code changing should notify the maintainers of the tracing code
- * that they need to work out the change.
- *
- * Some tracehook_*() inlines take arguments that the current tracing
- * implementations might not necessarily use.  These function signatures
- * are chosen to pass in all the information that is on hand in the
- * caller and might conceivably be relevant to a tracer, so that the
- * core code won't have to be updated when tracing adds more features.
- * If a call site changes so that some of those parameters are no longer
- * already on hand without extra work, then the tracehook_* interface
- * can change so there is no make-work burden on the core code.  The
- * maintainer of core code changing should notify the maintainers of the
- * tracing code that they need to work out the change.
- */
-
-#ifndef _LINUX_TRACEHOOK_H
-#define _LINUX_TRACEHOOK_H	1
-
-#include <linux/sched.h>
-#include <linux/ptrace.h>
-#include <linux/security.h>
-#include <linux/task_work.h>
-#include <linux/memcontrol.h>
-#include <linux/blk-cgroup.h>
-struct linux_binprm;
-
-/*
- * ptrace report for syscall entry and exit looks identical.
- */
-static inline int ptrace_report_syscall(struct pt_regs *regs,
-					unsigned long message)
-{
-	int ptrace = current->ptrace;
-
-	if (!(ptrace & PT_PTRACED))
-		return 0;
-
-	current->ptrace_message = message;
-	ptrace_notify(SIGTRAP | ((ptrace & PT_TRACESYSGOOD) ? 0x80 : 0));
-
-	/*
-	 * this isn't the same as continuing with a signal, but it will do
-	 * for normal use.  strace only continues with a signal if the
-	 * stopping signal is not SIGTRAP.  -brl
-	 */
-	if (current->exit_code) {
-		send_sig(current->exit_code, current, 1);
-		current->exit_code = 0;
-	}
-
-	current->ptrace_message = 0;
-	return fatal_signal_pending(current);
-}
-
-/**
- * tracehook_report_syscall_entry - task is about to attempt a system call
- * @regs:		user register state of current task
- *
- * This will be called if %SYSCALL_WORK_SYSCALL_TRACE or
- * %SYSCALL_WORK_SYSCALL_EMU have been set, when the current task has just
- * entered the kernel for a system call.  Full user register state is
- * available here.  Changing the values in @regs can affect the system
- * call number and arguments to be tried.  It is safe to block here,
- * preventing the system call from beginning.
- *
- * Returns zero normally, or nonzero if the calling arch code should abort
- * the system call.  That must prevent normal entry so no system call is
- * made.  If @task ever returns to user mode after this, its register state
- * is unspecified, but should be something harmless like an %ENOSYS error
- * return.  It should preserve enough information so that syscall_rollback()
- * can work (see asm-generic/syscall.h).
- *
- * Called without locks, just after entering kernel mode.
- */
-static inline __must_check int tracehook_report_syscall_entry(
-	struct pt_regs *regs)
-{
-	return ptrace_report_syscall(regs, PTRACE_EVENTMSG_SYSCALL_ENTRY);
-}
-
-/**
- * tracehook_report_syscall_exit - task has just finished a system call
- * @regs:		user register state of current task
- * @step:		nonzero if simulating single-step or block-step
- *
- * This will be called if %SYSCALL_WORK_SYSCALL_TRACE has been set, when
- * the current task has just finished an attempted system call.  Full
- * user register state is available here.  It is safe to block here,
- * preventing signals from being processed.
- *
- * If @step is nonzero, this report is also in lieu of the normal
- * trap that would follow the system call instruction because
- * user_enable_block_step() or user_enable_single_step() was used.
- * In this case, %SYSCALL_WORK_SYSCALL_TRACE might not be set.
- *
- * Called without locks, just before checking for pending signals.
- */
-static inline void tracehook_report_syscall_exit(struct pt_regs *regs, int step)
-{
-	if (step)
-		user_single_step_report(regs);
-	else
-		ptrace_report_syscall(regs, PTRACE_EVENTMSG_SYSCALL_EXIT);
-}
-
-/**
- * tracehook_signal_handler - signal handler setup is complete
- * @stepping:		nonzero if debugger single-step or block-step in use
- *
- * Called by the arch code after a signal handler has been set up.
- * Register and stack state reflects the user handler about to run.
- * Signal mask changes have already been made.
- *
- * Called without locks, shortly before returning to user mode
- * (or handling more signals).
- */
-static inline void tracehook_signal_handler(int stepping)
-{
-	if (stepping)
-		ptrace_notify(SIGTRAP);
-}
-
-/**
- * set_notify_resume - cause tracehook_notify_resume() to be called
- * @task:		task that will call tracehook_notify_resume()
- *
- * Calling this arranges that @task will call tracehook_notify_resume()
- * before returning to user mode.  If it's already running in user mode,
- * it will enter the kernel and call tracehook_notify_resume() soon.
- * If it's blocked, it will not be woken.
- */
-static inline void set_notify_resume(struct task_struct *task)
-{
-#ifdef TIF_NOTIFY_RESUME
-	if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_RESUME))
-		kick_process(task);
-#endif
-}
-
-/**
- * tracehook_notify_resume - report when about to return to user mode
- * @regs:		user-mode registers of @current task
- *
- * This is called when %TIF_NOTIFY_RESUME has been set.  Now we are
- * about to return to user mode, and the user state in @regs can be
- * inspected or adjusted.  The caller in arch code has cleared
- * %TIF_NOTIFY_RESUME before the call.  If the flag gets set again
- * asynchronously, this will be called again before we return to
- * user mode.
- *
- * Called without locks.
- */
-static inline void tracehook_notify_resume(struct pt_regs *regs)
-{
-	clear_thread_flag(TIF_NOTIFY_RESUME);
-	/*
-	 * This barrier pairs with task_work_add()->set_notify_resume() after
-	 * hlist_add_head(task->task_works);
-	 */
-	smp_mb__after_atomic();
-	if (unlikely(current->task_works))
-		task_work_run();
-
-#ifdef CONFIG_KEYS_REQUEST_CACHE
-	if (unlikely(current->cached_requested_key)) {
-		key_put(current->cached_requested_key);
-		current->cached_requested_key = NULL;
-	}
-#endif
-
-	mem_cgroup_handle_over_high();
-	blkcg_maybe_throttle_current();
-
-	rseq_handle_notify_resume(NULL, regs);
-}
-
-/*
- * called by exit_to_user_mode_loop() if ti_work & _TIF_NOTIFY_SIGNAL. This
- * is currently used by TWA_SIGNAL based task_work, which requires breaking
- * wait loops to ensure that task_work is noticed and run.
- */
-static inline void tracehook_notify_signal(void)
-{
-	clear_thread_flag(TIF_NOTIFY_SIGNAL);
-	smp_mb__after_atomic();
-	if (current->task_works)
-		task_work_run();
-}
-
-/*
- * Called when we have work to process from exit_to_user_mode_loop()
- */
-static inline void set_notify_signal(struct task_struct *task)
-{
-	if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_SIGNAL) &&
-	    !wake_up_state(task, TASK_INTERRUPTIBLE))
-		kick_process(task);
-}
-
-#endif	/* <linux/tracehook.h> */
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 168e57e40bbb..7b0a5d478ef6 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -122,33 +122,84 @@ struct tty_operations;
 /**
  * struct tty_struct - state associated with a tty while open
  *
- * @flow.lock: lock for flow members
- * @flow.stopped: tty stopped/started by tty_stop/tty_start
- * @flow.tco_stopped: tty stopped/started by TCOOFF/TCOON ioctls (it has
- *		      precedense over @flow.stopped)
+ * @magic: magic value set early in @alloc_tty_struct to %TTY_MAGIC, for
+ *	   debugging purposes
+ * @kref: reference counting by tty_kref_get() and tty_kref_put(), reaching zero
+ *	  frees the structure
+ * @dev: class device or %NULL (e.g. ptys, serdev)
+ * @driver: &struct tty_driver operating this tty
+ * @ops: &struct tty_operations of @driver for this tty (open, close, etc.)
+ * @index: index of this tty (e.g. to construct @name like tty12)
+ * @ldisc_sem: protects line discipline changes (@ldisc) -- lock tty not pty
+ * @ldisc: the current line discipline for this tty (n_tty by default)
+ * @atomic_write_lock: protects against concurrent writers, i.e. locks
+ *		       @write_cnt, @write_buf and similar
+ * @legacy_mutex: leftover from history (BKL -> BTM -> @legacy_mutex),
+ *		  protecting several operations on this tty
+ * @throttle_mutex: protects against concurrent tty_throttle_safe() and
+ *		    tty_unthrottle_safe() (but not tty_unthrottle())
+ * @termios_rwsem: protects @termios and @termios_locked
+ * @winsize_mutex: protects @winsize
+ * @termios: termios for the current tty, copied from/to @driver.termios
+ * @termios_locked: locked termios (by %TIOCGLCKTRMIOS and %TIOCSLCKTRMIOS
+ *		    ioctls)
+ * @name: name of the tty constructed by tty_line_name() (e.g. ttyS3)
+ * @flags: bitwise OR of %TTY_THROTTLED, %TTY_IO_ERROR, ...
+ * @count: count of open processes, reaching zero cancels all the work for
+ *	   this tty and drops a @kref too (but does not free this tty)
+ * @winsize: size of the terminal "window" (cf. @winsize_mutex)
+ * @flow: flow settings grouped together, see also @flow.unused
+ * @flow.lock: lock for @flow members
+ * @flow.stopped: tty stopped/started by stop_tty()/start_tty()
+ * @flow.tco_stopped: tty stopped/started by %TCOOFF/%TCOON ioctls (it has
+ *		      precedence over @flow.stopped)
  * @flow.unused: alignment for Alpha, so that no members other than @flow.* are
  *		 modified by the same 64b word store. The @flow's __aligned is
  *		 there for the very same reason.
- * @ctrl.lock: lock for ctrl members
+ * @ctrl: control settings grouped together, see also @ctrl.unused
+ * @ctrl.lock: lock for @ctrl members
  * @ctrl.pgrp: process group of this tty (setpgrp(2))
  * @ctrl.session: session of this tty (setsid(2)). Writes are protected by both
- *		  @ctrl.lock and legacy mutex, readers must use at least one of
+ *		  @ctrl.lock and @legacy_mutex, readers must use at least one of
  *		  them.
- * @ctrl.pktstatus: packet mode status (bitwise OR of TIOCPKT_* constants)
+ * @ctrl.pktstatus: packet mode status (bitwise OR of %TIOCPKT_ constants)
  * @ctrl.packet: packet mode enabled
+ * @ctrl.unused: alignment for Alpha, see @flow.unused for explanation
+ * @hw_stopped: not controlled by the tty layer, under @driver's control for CTS
+ *		handling
+ * @receive_room: bytes permitted to feed to @ldisc without any being lost
+ * @flow_change: controls behavior of throttling, see tty_throttle_safe() and
+ *		 tty_unthrottle_safe()
+ * @link: link to another pty (master -> slave and vice versa)
+ * @fasync: state for %O_ASYNC (for %SIGIO); managed by fasync_helper()
+ * @write_wait: concurrent writers are waiting in this queue until they are
+ *		allowed to write
+ * @read_wait: readers wait for data in this queue
+ * @hangup_work: normally a work to perform a hangup (do_tty_hangup()); while
+ *		 freeing the tty, (re)used to release_one_tty()
+ * @disc_data: pointer to @ldisc's private data (e.g. to &struct n_tty_data)
+ * @driver_data: pointer to @driver's private data (e.g. &struct uart_state)
+ * @files_lock:	protects @tty_files list
+ * @tty_files: list of (re)openers of this tty (i.e. linked &struct
+ *	       tty_file_private)
+ * @closing: when set during close, n_tty processes only START & STOP chars
+ * @write_buf: temporary buffer used during tty_write() to copy user data to
+ * @write_cnt: count of bytes written in tty_write() to @write_buf
+ * @SAK_work: if the tty has a pending do_SAK, it is queued here
+ * @port: persistent storage for this device (i.e. &struct tty_port)
  *
  * All of the state associated with a tty while the tty is open. Persistent
- * storage for tty devices is referenced here as @port in struct tty_port.
+ * storage for tty devices is referenced here as @port and is documented in
+ * &struct tty_port.
  */
 struct tty_struct {
 	int	magic;
 	struct kref kref;
-	struct device *dev;	/* class device or NULL (e.g. ptys, serdev) */
+	struct device *dev;
 	struct tty_driver *driver;
 	const struct tty_operations *ops;
 	int index;
 
-	/* Protects ldisc changes: Lock tty not pty */
 	struct ld_semaphore ldisc_sem;
 	struct tty_ldisc *ldisc;
 
@@ -157,12 +208,11 @@ struct tty_struct {
 	struct mutex throttle_mutex;
 	struct rw_semaphore termios_rwsem;
 	struct mutex winsize_mutex;
-	/* Termios values are protected by the termios rwsem */
 	struct ktermios termios, termios_locked;
 	char name[64];
 	unsigned long flags;
 	int count;
-	struct winsize winsize;		/* winsize_mutex */
+	struct winsize winsize;
 
 	struct {
 		spinlock_t lock;
@@ -181,7 +231,7 @@ struct tty_struct {
 	} __aligned(sizeof(unsigned long)) ctrl;
 
 	int hw_stopped;
-	unsigned int receive_room;	/* Bytes free for queue */
+	unsigned int receive_room;
 	int flow_change;
 
 	struct tty_struct *link;
@@ -191,7 +241,7 @@ struct tty_struct {
 	struct work_struct hangup_work;
 	void *disc_data;
 	void *driver_data;
-	spinlock_t files_lock;		/* protects tty_files list */
+	spinlock_t files_lock;
 	struct list_head tty_files;
 
 #define N_TTY_BUF_SIZE 4096
@@ -199,7 +249,6 @@ struct tty_struct {
 	int closing;
 	unsigned char *write_buf;
 	int write_cnt;
-	/* If the tty has a pending do_SAK, queue it here - akpm */
 	struct work_struct SAK_work;
 	struct tty_port *port;
 } __randomize_layout;
@@ -214,26 +263,72 @@ struct tty_file_private {
 /* tty magic number */
 #define TTY_MAGIC		0x5401
 
-/*
- * These bits are used in the flags field of the tty structure.
+/**
+ * DOC: TTY Struct Flags
+ *
+ * These bits are used in the :c:member:`tty_struct.flags` field.
  *
  * So that interrupts won't be able to mess up the queues,
  * copy_to_cooked must be atomic with respect to itself, as must
  * tty->write.  Thus, you must use the inline functions set_bit() and
  * clear_bit() to make things atomic.
+ *
+ * TTY_THROTTLED
+ *	Driver input is throttled. The ldisc should call
+ *	:c:member:`tty_driver.unthrottle()` in order to resume reception when
+ *	it is ready to process more data (at threshold min).
+ *
+ * TTY_IO_ERROR
+ *	If set, causes all subsequent userspace read/write calls on the tty to
+ *	fail, returning -%EIO. (May be no ldisc too.)
+ *
+ * TTY_OTHER_CLOSED
+ *	Device is a pty and the other side has closed.
+ *
+ * TTY_EXCLUSIVE
+ *	Exclusive open mode (a single opener).
+ *
+ * TTY_DO_WRITE_WAKEUP
+ *	If set, causes the driver to call the
+ *	:c:member:`tty_ldisc_ops.write_wakeup()` method in order to resume
+ *	transmission when it can accept more data to transmit.
+ *
+ * TTY_LDISC_OPEN
+ *	Indicates that a line discipline is open. For debugging purposes only.
+ *
+ * TTY_PTY_LOCK
+ *	A flag private to pty code to implement %TIOCSPTLCK/%TIOCGPTLCK logic.
+ *
+ * TTY_NO_WRITE_SPLIT
+ *	Prevent driver from splitting up writes into smaller chunks (preserve
+ *	write boundaries to driver).
+ *
+ * TTY_HUPPED
+ *	The TTY was hung up. This is set post :c:member:`tty_driver.hangup()`.
+ *
+ * TTY_HUPPING
+ *	The TTY is in the process of hanging up to abort potential readers.
+ *
+ * TTY_LDISC_CHANGING
+ *	Line discipline for this TTY is being changed. I/O should not block
+ *	when this is set. Use tty_io_nonblock() to check.
+ *
+ * TTY_LDISC_HALTED
+ *	Line discipline for this TTY was stopped. No work should be queued to
+ *	this ldisc.
  */
-#define TTY_THROTTLED 		0	/* Call unthrottle() at threshold min */
-#define TTY_IO_ERROR 		1	/* Cause an I/O error (may be no ldisc too) */
-#define TTY_OTHER_CLOSED 	2	/* Other side (if any) has closed */
-#define TTY_EXCLUSIVE 		3	/* Exclusive open mode */
-#define TTY_DO_WRITE_WAKEUP 	5	/* Call write_wakeup after queuing new */
-#define TTY_LDISC_OPEN	 	11	/* Line discipline is open */
-#define TTY_PTY_LOCK 		16	/* pty private */
-#define TTY_NO_WRITE_SPLIT 	17	/* Preserve write boundaries to driver */
-#define TTY_HUPPED 		18	/* Post driver->hangup() */
-#define TTY_HUPPING		19	/* Hangup in progress */
-#define TTY_LDISC_CHANGING	20	/* Change pending - non-block IO */
-#define TTY_LDISC_HALTED	22	/* Line discipline is halted */
+#define TTY_THROTTLED		0
+#define TTY_IO_ERROR		1
+#define TTY_OTHER_CLOSED	2
+#define TTY_EXCLUSIVE		3
+#define TTY_DO_WRITE_WAKEUP	5
+#define TTY_LDISC_OPEN		11
+#define TTY_PTY_LOCK		16
+#define TTY_NO_WRITE_SPLIT	17
+#define TTY_HUPPED		18
+#define TTY_HUPPING		19
+#define TTY_LDISC_CHANGING	20
+#define TTY_LDISC_HALTED	22
 
 static inline bool tty_io_nonblock(struct tty_struct *tty, struct file *file)
 {
@@ -252,20 +347,20 @@ static inline bool tty_throttled(struct tty_struct *tty)
 }
 
 #ifdef CONFIG_TTY
-extern void tty_kref_put(struct tty_struct *tty);
-extern struct pid *tty_get_pgrp(struct tty_struct *tty);
-extern void tty_vhangup_self(void);
-extern void disassociate_ctty(int priv);
-extern dev_t tty_devnum(struct tty_struct *tty);
-extern void proc_clear_tty(struct task_struct *p);
-extern struct tty_struct *get_current_tty(void);
+void tty_kref_put(struct tty_struct *tty);
+struct pid *tty_get_pgrp(struct tty_struct *tty);
+void tty_vhangup_self(void);
+void disassociate_ctty(int priv);
+dev_t tty_devnum(struct tty_struct *tty);
+void proc_clear_tty(struct task_struct *p);
+struct tty_struct *get_current_tty(void);
 /* tty_io.c */
-extern int __init tty_init(void);
-extern const char *tty_name(const struct tty_struct *tty);
-extern struct tty_struct *tty_kopen_exclusive(dev_t device);
-extern struct tty_struct *tty_kopen_shared(dev_t device);
-extern void tty_kclose(struct tty_struct *tty);
-extern int tty_dev_name_to_number(const char *name, dev_t *number);
+int __init tty_init(void);
+const char *tty_name(const struct tty_struct *tty);
+struct tty_struct *tty_kopen_exclusive(dev_t device);
+struct tty_struct *tty_kopen_shared(dev_t device);
+void tty_kclose(struct tty_struct *tty);
+int tty_dev_name_to_number(const char *name, dev_t *number);
 #else
 static inline void tty_kref_put(struct tty_struct *tty)
 { }
@@ -296,7 +391,7 @@ static inline int tty_dev_name_to_number(const char *name, dev_t *number)
 
 extern struct ktermios tty_std_termios;
 
-extern int vcs_init(void);
+int vcs_init(void);
 
 extern struct class *tty_class;
 
@@ -316,34 +411,34 @@ static inline struct tty_struct *tty_kref_get(struct tty_struct *tty)
 	return tty;
 }
 
-extern const char *tty_driver_name(const struct tty_struct *tty);
-extern void tty_wait_until_sent(struct tty_struct *tty, long timeout);
-extern void stop_tty(struct tty_struct *tty);
-extern void start_tty(struct tty_struct *tty);
-extern void tty_write_message(struct tty_struct *tty, char *msg);
-extern int tty_send_xchar(struct tty_struct *tty, char ch);
-extern int tty_put_char(struct tty_struct *tty, unsigned char c);
-extern unsigned int tty_chars_in_buffer(struct tty_struct *tty);
-extern unsigned int tty_write_room(struct tty_struct *tty);
-extern void tty_driver_flush_buffer(struct tty_struct *tty);
-extern void tty_unthrottle(struct tty_struct *tty);
-extern int tty_throttle_safe(struct tty_struct *tty);
-extern int tty_unthrottle_safe(struct tty_struct *tty);
-extern int tty_do_resize(struct tty_struct *tty, struct winsize *ws);
-extern int tty_get_icount(struct tty_struct *tty,
-			  struct serial_icounter_struct *icount);
-extern int is_current_pgrp_orphaned(void);
-extern void tty_hangup(struct tty_struct *tty);
-extern void tty_vhangup(struct tty_struct *tty);
-extern int tty_hung_up_p(struct file *filp);
-extern void do_SAK(struct tty_struct *tty);
-extern void __do_SAK(struct tty_struct *tty);
-extern void no_tty(void);
-extern speed_t tty_termios_baud_rate(struct ktermios *termios);
-extern void tty_termios_encode_baud_rate(struct ktermios *termios,
-						speed_t ibaud, speed_t obaud);
-extern void tty_encode_baud_rate(struct tty_struct *tty,
-						speed_t ibaud, speed_t obaud);
+const char *tty_driver_name(const struct tty_struct *tty);
+void tty_wait_until_sent(struct tty_struct *tty, long timeout);
+void stop_tty(struct tty_struct *tty);
+void start_tty(struct tty_struct *tty);
+void tty_write_message(struct tty_struct *tty, char *msg);
+int tty_send_xchar(struct tty_struct *tty, char ch);
+int tty_put_char(struct tty_struct *tty, unsigned char c);
+unsigned int tty_chars_in_buffer(struct tty_struct *tty);
+unsigned int tty_write_room(struct tty_struct *tty);
+void tty_driver_flush_buffer(struct tty_struct *tty);
+void tty_unthrottle(struct tty_struct *tty);
+int tty_throttle_safe(struct tty_struct *tty);
+int tty_unthrottle_safe(struct tty_struct *tty);
+int tty_do_resize(struct tty_struct *tty, struct winsize *ws);
+int tty_get_icount(struct tty_struct *tty,
+		struct serial_icounter_struct *icount);
+int is_current_pgrp_orphaned(void);
+void tty_hangup(struct tty_struct *tty);
+void tty_vhangup(struct tty_struct *tty);
+int tty_hung_up_p(struct file *filp);
+void do_SAK(struct tty_struct *tty);
+void __do_SAK(struct tty_struct *tty);
+void no_tty(void);
+speed_t tty_termios_baud_rate(struct ktermios *termios);
+void tty_termios_encode_baud_rate(struct ktermios *termios, speed_t ibaud,
+		speed_t obaud);
+void tty_encode_baud_rate(struct tty_struct *tty, speed_t ibaud,
+		speed_t obaud);
 
 /**
  *	tty_get_baud_rate	-	get tty bit rates
@@ -363,37 +458,36 @@ static inline speed_t tty_get_baud_rate(struct tty_struct *tty)
 unsigned char tty_get_char_size(unsigned int cflag);
 unsigned char tty_get_frame_size(unsigned int cflag);
 
-extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old);
-extern int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
-extern int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);
+void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old);
+int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
+int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);
 
-extern void tty_wakeup(struct tty_struct *tty);
+void tty_wakeup(struct tty_struct *tty);
 
-extern int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
-			unsigned int cmd, unsigned long arg);
-extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg);
-extern struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx);
-extern void tty_release_struct(struct tty_struct *tty, int idx);
-extern void tty_init_termios(struct tty_struct *tty);
-extern void tty_save_termios(struct tty_struct *tty);
-extern int tty_standard_install(struct tty_driver *driver,
+int tty_mode_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg);
+int tty_perform_flush(struct tty_struct *tty, unsigned long arg);
+struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx);
+void tty_release_struct(struct tty_struct *tty, int idx);
+void tty_init_termios(struct tty_struct *tty);
+void tty_save_termios(struct tty_struct *tty);
+int tty_standard_install(struct tty_driver *driver,
 		struct tty_struct *tty);
 
 extern struct mutex tty_mutex;
 
 /* n_tty.c */
-extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops);
+void n_tty_inherit_ops(struct tty_ldisc_ops *ops);
 #ifdef CONFIG_TTY
-extern void __init n_tty_init(void);
+void __init n_tty_init(void);
 #else
 static inline void n_tty_init(void) { }
 #endif
 
 /* tty_audit.c */
 #ifdef CONFIG_AUDIT
-extern void tty_audit_exit(void);
-extern void tty_audit_fork(struct signal_struct *sig);
-extern int tty_audit_push(void);
+void tty_audit_exit(void);
+void tty_audit_fork(struct signal_struct *sig);
+int tty_audit_push(void);
 #else
 static inline void tty_audit_exit(void)
 {
@@ -408,24 +502,23 @@ static inline int tty_audit_push(void)
 #endif
 
 /* tty_ioctl.c */
-extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
-		       unsigned int cmd, unsigned long arg);
+int n_tty_ioctl_helper(struct tty_struct *tty, unsigned int cmd,
+		unsigned long arg);
 
 /* vt.c */
 
-extern int vt_ioctl(struct tty_struct *tty,
-		    unsigned int cmd, unsigned long arg);
+int vt_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg);
 
-extern long vt_compat_ioctl(struct tty_struct *tty,
-		     unsigned int cmd, unsigned long arg);
+long vt_compat_ioctl(struct tty_struct *tty, unsigned int cmd,
+		unsigned long arg);
 
 /* tty_mutex.c */
 /* functions for preparation of BKL removal */
-extern void tty_lock(struct tty_struct *tty);
-extern int  tty_lock_interruptible(struct tty_struct *tty);
-extern void tty_unlock(struct tty_struct *tty);
-extern void tty_lock_slave(struct tty_struct *tty);
-extern void tty_unlock_slave(struct tty_struct *tty);
-extern void tty_set_lock_subclass(struct tty_struct *tty);
+void tty_lock(struct tty_struct *tty);
+int  tty_lock_interruptible(struct tty_struct *tty);
+void tty_unlock(struct tty_struct *tty);
+void tty_lock_slave(struct tty_struct *tty);
+void tty_unlock_slave(struct tty_struct *tty);
+void tty_set_lock_subclass(struct tty_struct *tty);
 
 #endif
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index c20431d8def8..4841d8069c07 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -2,248 +2,350 @@
 #ifndef _LINUX_TTY_DRIVER_H
 #define _LINUX_TTY_DRIVER_H
 
-/*
- * This structure defines the interface between the low-level tty
- * driver and the tty routines.  The following routines can be
- * defined; unless noted otherwise, they are optional, and can be
- * filled in with a null pointer.
+#include <linux/export.h>
+#include <linux/fs.h>
+#include <linux/kref.h>
+#include <linux/list.h>
+#include <linux/cdev.h>
+#include <linux/termios.h>
+#include <linux/seq_file.h>
+
+struct tty_struct;
+struct tty_driver;
+struct serial_icounter_struct;
+struct serial_struct;
+
+/**
+ * struct tty_operations -- interface between driver and tty
+ *
+ * @lookup: ``struct tty_struct *()(struct tty_driver *self, struct file *,
+ *				    int idx)``
  *
- * struct tty_struct * (*lookup)(struct tty_driver *self, struct file *, int idx)
+ *	Return the tty device corresponding to @idx, %NULL if there is not
+ *	one currently in use and an %ERR_PTR value on error. Called under
+ *	%tty_mutex (for now!)
  *
- *	Return the tty device corresponding to idx, NULL if there is not
- *	one currently in use and an ERR_PTR value on error. Called under
- *	tty_mutex (for now!)
+ *	Optional method. Default behaviour is to use the @self->ttys array.
  *
- *	Optional method. Default behaviour is to use the ttys array
+ * @install: ``int ()(struct tty_driver *self, struct tty_struct *tty)``
  *
- * int (*install)(struct tty_driver *self, struct tty_struct *tty)
+ *	Install a new @tty into the @self's internal tables. Used in
+ *	conjunction with @lookup and @remove methods.
  *
- *	Install a new tty into the tty driver internal tables. Used in
- *	conjunction with lookup and remove methods.
+ *	Optional method. Default behaviour is to use the @self->ttys array.
  *
- *	Optional method. Default behaviour is to use the ttys array
+ * @remove: ``void ()(struct tty_driver *self, struct tty_struct *tty)``
  *
- * void (*remove)(struct tty_driver *self, struct tty_struct *tty)
+ *	Remove a closed @tty from the @self's internal tables. Used in
+ *	conjunction with @lookup and @remove methods.
  *
- *	Remove a closed tty from the tty driver internal tables. Used in
- *	conjunction with lookup and remove methods.
+ *	Optional method. Default behaviour is to use the @self->ttys array.
  *
- *	Optional method. Default behaviour is to use the ttys array
+ * @open: ``int ()(struct tty_struct *tty, struct file *)``
  *
- * int  (*open)(struct tty_struct * tty, struct file * filp);
+ *	This routine is called when a particular @tty device is opened. This
+ *	routine is mandatory; if this routine is not filled in, the attempted
+ *	open will fail with %ENODEV.
  *
- * 	This routine is called when a particular tty device is opened.
- * 	This routine is mandatory; if this routine is not filled in,
- * 	the attempted open will fail with ENODEV.
+ *	Required method. Called with tty lock held. May sleep.
  *
- *	Required method. Called with tty lock held.
+ * @close: ``void ()(struct tty_struct *tty, struct file *)``
  *
- * void (*close)(struct tty_struct * tty, struct file * filp);
+ *	This routine is called when a particular @tty device is closed. At the
+ *	point of return from this call the driver must make no further ldisc
+ *	calls of any kind.
  *
- * 	This routine is called when a particular tty device is closed.
- *	Note: called even if the corresponding open() failed.
+ *	Remark: called even if the corresponding @open() failed.
  *
- *	Required method. Called with tty lock held.
+ *	Required method. Called with tty lock held. May sleep.
  *
- * void (*shutdown)(struct tty_struct * tty);
+ * @shutdown: ``void ()(struct tty_struct *tty)``
  *
- * 	This routine is called under the tty lock when a particular tty device
- *	is closed for the last time. It executes before the tty resources
- *	are freed so may execute while another function holds a tty kref.
+ *	This routine is called under the tty lock when a particular @tty device
+ *	is closed for the last time. It executes before the @tty resources
+ *	are freed so may execute while another function holds a @tty kref.
  *
- * void (*cleanup)(struct tty_struct * tty);
+ * @cleanup: ``void ()(struct tty_struct *tty)``
  *
- *	This routine is called asynchronously when a particular tty device
+ *	This routine is called asynchronously when a particular @tty device
  *	is closed for the last time freeing up the resources. This is
  *	actually the second part of shutdown for routines that might sleep.
  *
+ * @write: ``int ()(struct tty_struct *tty, const unsigned char *buf,
+ *		    int count)``
  *
- * int (*write)(struct tty_struct * tty,
- * 		 const unsigned char *buf, int count);
- *
- * 	This routine is called by the kernel to write a series of
- * 	characters to the tty device.  The characters may come from
- * 	user space or kernel space.  This routine will return the
+ *	This routine is called by the kernel to write a series (@count) of
+ *	characters (@buf) to the @tty device. The characters may come from
+ *	user space or kernel space.  This routine will return the
  *	number of characters actually accepted for writing.
  *
- *	Optional: Required for writable devices.
+ *	May occur in parallel in special cases. Because this includes panic
+ *	paths drivers generally shouldn't try and do clever locking here.
  *
- * int (*put_char)(struct tty_struct *tty, unsigned char ch);
+ *	Optional: Required for writable devices. May not sleep.
  *
- * 	This routine is called by the kernel to write a single
- * 	character to the tty device.  If the kernel uses this routine,
- * 	it must call the flush_chars() routine (if defined) when it is
- * 	done stuffing characters into the driver.  If there is no room
- * 	in the queue, the character is ignored.
+ * @put_char: ``int ()(struct tty_struct *tty, unsigned char ch)``
  *
- *	Optional: Kernel will use the write method if not provided.
+ *	This routine is called by the kernel to write a single character @ch to
+ *	the @tty device. If the kernel uses this routine, it must call the
+ *	@flush_chars() routine (if defined) when it is done stuffing characters
+ *	into the driver. If there is no room in the queue, the character is
+ *	ignored.
  *
- *	Note: Do not call this function directly, call tty_put_char
+ *	Optional: Kernel will use the @write method if not provided. Do not
+ *	call this function directly, call tty_put_char().
  *
- * void (*flush_chars)(struct tty_struct *tty);
+ * @flush_chars: ``void ()(struct tty_struct *tty)``
  *
- * 	This routine is called by the kernel after it has written a
- * 	series of characters to the tty device using put_char().  
+ *	This routine is called by the kernel after it has written a
+ *	series of characters to the tty device using @put_char().
  *
- *	Optional:
+ *	Optional. Do not call this function directly, call
+ *	tty_driver_flush_chars().
  *
- *	Note: Do not call this function directly, call tty_driver_flush_chars
- * 
- * unsigned int  (*write_room)(struct tty_struct *tty);
+ * @write_room: ``unsigned int ()(struct tty_struct *tty)``
  *
- * 	This routine returns the numbers of characters the tty driver
- * 	will accept for queuing to be written.  This number is subject
- * 	to change as output buffers get emptied, or if the output flow
+ *	This routine returns the numbers of characters the @tty driver
+ *	will accept for queuing to be written.  This number is subject
+ *	to change as output buffers get emptied, or if the output flow
  *	control is acted.
  *
- *	Required if write method is provided else not needed.
+ *	The ldisc is responsible for being intelligent about multi-threading of
+ *	write_room/write calls
+ *
+ *	Required if @write method is provided else not needed. Do not call this
+ *	function directly, call tty_write_room()
+ *
+ * @chars_in_buffer: ``unsigned int ()(struct tty_struct *tty)``
+ *
+ *	This routine returns the number of characters in the device private
+ *	output queue. Used in tty_wait_until_sent() and for poll()
+ *	implementation.
  *
- *	Note: Do not call this function directly, call tty_write_room
- * 
- * int  (*ioctl)(struct tty_struct *tty, unsigned int cmd, unsigned long arg);
+ *	Optional: if not provided, it is assumed there is no queue on the
+ *	device. Do not call this function directly, call tty_chars_in_buffer().
  *
- * 	This routine allows the tty driver to implement
- *	device-specific ioctls.  If the ioctl number passed in cmd
- * 	is not recognized by the driver, it should return ENOIOCTLCMD.
+ * @ioctl: ``int ()(struct tty_struct *tty, unsigned int cmd,
+ *		    unsigned long arg)``
  *
- *	Optional
+ *	This routine allows the @tty driver to implement device-specific
+ *	ioctls. If the ioctl number passed in @cmd is not recognized by the
+ *	driver, it should return %ENOIOCTLCMD.
  *
- * long (*compat_ioctl)(struct tty_struct *tty,,
- * 	                unsigned int cmd, unsigned long arg);
+ *	Optional.
  *
- * 	implement ioctl processing for 32 bit process on 64 bit system
+ * @compat_ioctl: ``long ()(struct tty_struct *tty, unsigned int cmd,
+ *			  unsigned long arg)``
  *
- *	Optional
- * 
- * void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
+ *	Implement ioctl processing for 32 bit process on 64 bit system.
  *
- * 	This routine allows the tty driver to be notified when
- * 	device's termios settings have changed.
+ *	Optional.
  *
- *	Optional: Called under the termios lock
+ * @set_termios: ``void ()(struct tty_struct *tty, struct ktermios *old)``
  *
+ *	This routine allows the @tty driver to be notified when device's
+ *	termios settings have changed. New settings are in @tty->termios.
+ *	Previous settings are passed in the @old argument.
  *
- * void (*set_ldisc)(struct tty_struct *tty);
+ *	The API is defined such that the driver should return the actual modes
+ *	selected. This means that the driver is responsible for modifying any
+ *	bits in @tty->termios it cannot fulfill to indicate the actual modes
+ *	being used.
  *
- * 	This routine allows the tty driver to be notified when the
- * 	device's termios settings have changed.
+ *	Optional. Called under the @tty->termios_rwsem. May sleep.
  *
- *	Optional: Called under BKL (currently)
- * 
- * void (*throttle)(struct tty_struct * tty);
+ * @set_ldisc: ``void ()(struct tty_struct *tty)``
  *
- * 	This routine notifies the tty driver that input buffers for
- * 	the line discipline are close to full, and it should somehow
- * 	signal that no more characters should be sent to the tty.
+ *	This routine allows the @tty driver to be notified when the device's
+ *	line discipline is being changed. At the point this is done the
+ *	discipline is not yet usable.
  *
- *	Optional: Always invoke via tty_throttle_safe(), called under the
- *	termios lock.
- * 
- * void (*unthrottle)(struct tty_struct * tty);
+ *	Optional. Called under the @tty->ldisc_sem and @tty->termios_rwsem.
  *
- * 	This routine notifies the tty drivers that it should signals
- * 	that characters can now be sent to the tty without fear of
- * 	overrunning the input buffers of the line disciplines.
- * 
- *	Optional: Always invoke via tty_unthrottle(), called under the
- *	termios lock.
+ * @throttle: ``void ()(struct tty_struct *tty)``
  *
- * void (*stop)(struct tty_struct *tty);
+ *	This routine notifies the @tty driver that input buffers for the line
+ *	discipline are close to full, and it should somehow signal that no more
+ *	characters should be sent to the @tty.
  *
- * 	This routine notifies the tty driver that it should stop
- * 	outputting characters to the tty device.  
+ *	Serialization including with @unthrottle() is the job of the ldisc
+ *	layer.
  *
- *	Called with ->flow.lock held. Serialized with start() method.
+ *	Optional: Always invoke via tty_throttle_safe(). Called under the
+ *	@tty->termios_rwsem.
  *
- *	Optional:
+ * @unthrottle: ``void ()(struct tty_struct *tty)``
  *
- *	Note: Call stop_tty not this method.
- * 
- * void (*start)(struct tty_struct *tty);
+ *	This routine notifies the @tty driver that it should signal that
+ *	characters can now be sent to the @tty without fear of overrunning the
+ *	input buffers of the line disciplines.
  *
- * 	This routine notifies the tty driver that it resume sending
+ *	Optional. Always invoke via tty_unthrottle(). Called under the
+ *	@tty->termios_rwsem.
+ *
+ * @stop: ``void ()(struct tty_struct *tty)``
+ *
+ *	This routine notifies the @tty driver that it should stop outputting
  *	characters to the tty device.
  *
- *	Called with ->flow.lock held. Serialized with stop() method.
+ *	Called with @tty->flow.lock held. Serialized with @start() method.
+ *
+ *	Optional. Always invoke via stop_tty().
+ *
+ * @start: ``void ()(struct tty_struct *tty)``
+ *
+ *	This routine notifies the @tty driver that it resumed sending
+ *	characters to the @tty device.
+ *
+ *	Called with @tty->flow.lock held. Serialized with stop() method.
+ *
+ *	Optional. Always invoke via start_tty().
+ *
+ * @hangup: ``void ()(struct tty_struct *tty)``
+ *
+ *	This routine notifies the @tty driver that it should hang up the @tty
+ *	device.
  *
- *	Optional:
+ *	Optional. Called with tty lock held.
  *
- *	Note: Call start_tty not this method.
- * 
- * void (*hangup)(struct tty_struct *tty);
+ * @break_ctl: ``int ()(struct tty_struct *tty, int state)``
  *
- * 	This routine notifies the tty driver that it should hang up the
- * 	tty device.
+ *	This optional routine requests the @tty driver to turn on or off BREAK
+ *	status on the RS-232 port. If @state is -1, then the BREAK status
+ *	should be turned on; if @state is 0, then BREAK should be turned off.
  *
- *	Optional:
+ *	If this routine is implemented, the high-level tty driver will handle
+ *	the following ioctls: %TCSBRK, %TCSBRKP, %TIOCSBRK, %TIOCCBRK.
  *
- *	Called with tty lock held.
+ *	If the driver sets %TTY_DRIVER_HARDWARE_BREAK in tty_alloc_driver(),
+ *	then the interface will also be called with actual times and the
+ *	hardware is expected to do the delay work itself. 0 and -1 are still
+ *	used for on/off.
  *
- * int (*break_ctl)(struct tty_struct *tty, int state);
+ *	Optional: Required for %TCSBRK/%BRKP/etc. handling. May sleep.
  *
- * 	This optional routine requests the tty driver to turn on or
- * 	off BREAK status on the RS-232 port.  If state is -1,
- * 	then the BREAK status should be turned on; if state is 0, then
- * 	BREAK should be turned off.
+ * @flush_buffer: ``void ()(struct tty_struct *tty)``
  *
- * 	If this routine is implemented, the high-level tty driver will
- * 	handle the following ioctls: TCSBRK, TCSBRKP, TIOCSBRK,
- * 	TIOCCBRK.
+ *	This routine discards device private output buffer. Invoked on close,
+ *	hangup, to implement %TCOFLUSH ioctl and similar.
  *
- *	If the driver sets TTY_DRIVER_HARDWARE_BREAK then the interface
- *	will also be called with actual times and the hardware is expected
- *	to do the delay work itself. 0 and -1 are still used for on/off.
+ *	Optional: if not provided, it is assumed there is no queue on the
+ *	device. Do not call this function directly, call
+ *	tty_driver_flush_buffer().
  *
- *	Optional: Required for TCSBRK/BRKP/etc handling.
+ * @wait_until_sent: ``void ()(struct tty_struct *tty, int timeout)``
  *
- * void (*wait_until_sent)(struct tty_struct *tty, int timeout);
- * 
- * 	This routine waits until the device has written out all of the
- * 	characters in its transmitter FIFO.
+ *	This routine waits until the device has written out all of the
+ *	characters in its transmitter FIFO. Or until @timeout (in jiffies) is
+ *	reached.
  *
- *	Optional: If not provided the device is assumed to have no FIFO
+ *	Optional: If not provided, the device is assumed to have no FIFO.
+ *	Usually correct to invoke via tty_wait_until_sent(). May sleep.
  *
- *	Note: Usually correct to call tty_wait_until_sent
+ * @send_xchar: ``void ()(struct tty_struct *tty, char ch)``
  *
- * void (*send_xchar)(struct tty_struct *tty, char ch);
+ *	This routine is used to send a high-priority XON/XOFF character (@ch)
+ *	to the @tty device.
  *
- * 	This routine is used to send a high-priority XON/XOFF
- * 	character to the device.
+ *	Optional: If not provided, then the @write method is called under
+ *	the @tty->atomic_write_lock to keep it serialized with the ldisc.
  *
- *	Optional: If not provided then the write method is called under
- *	the atomic write lock to keep it serialized with the ldisc.
+ * @tiocmget: ``int ()(struct tty_struct *tty)``
  *
- * int (*resize)(struct tty_struct *tty, struct winsize *ws)
+ *	This routine is used to obtain the modem status bits from the @tty
+ *	driver.
  *
- *	Called when a termios request is issued which changes the
- *	requested terminal geometry.
+ *	Optional: If not provided, then %ENOTTY is returned from the %TIOCMGET
+ *	ioctl. Do not call this function directly, call tty_tiocmget().
+ *
+ * @tiocmset: ``int ()(struct tty_struct *tty,
+ *		       unsigned int set, unsigned int clear)``
+ *
+ *	This routine is used to set the modem status bits to the @tty driver.
+ *	First, @clear bits should be cleared, then @set bits set.
+ *
+ *	Optional: If not provided, then %ENOTTY is returned from the %TIOCMSET
+ *	ioctl. Do not call this function directly, call tty_tiocmset().
+ *
+ * @resize: ``int ()(struct tty_struct *tty, struct winsize *ws)``
+ *
+ *	Called when a termios request is issued which changes the requested
+ *	terminal geometry to @ws.
  *
  *	Optional: the default action is to update the termios structure
  *	without error. This is usually the correct behaviour. Drivers should
- *	not force errors here if they are not resizable objects (eg a serial
+ *	not force errors here if they are not resizable objects (e.g. a serial
  *	line). See tty_do_resize() if you need to wrap the standard method
- *	in your own logic - the usual case.
+ *	in your own logic -- the usual case.
+ *
+ * @get_icount: ``int ()(struct tty_struct *tty,
+ *			 struct serial_icounter *icount)``
+ *
+ *	Called when the @tty device receives a %TIOCGICOUNT ioctl. Passed a
+ *	kernel structure @icount to complete.
+ *
+ *	Optional: called only if provided, otherwise %ENOTTY will be returned.
  *
- * int (*get_icount)(struct tty_struct *tty, struct serial_icounter *icount);
+ * @get_serial: ``int ()(struct tty_struct *tty, struct serial_struct *p)``
  *
- *	Called when the device receives a TIOCGICOUNT ioctl. Passed a kernel
- *	structure to complete. This method is optional and will only be called
- *	if provided (otherwise ENOTTY will be returned).
+ *	Called when the @tty device receives a %TIOCGSERIAL ioctl. Passed a
+ *	kernel structure @p (&struct serial_struct) to complete.
+ *
+ *	Optional: called only if provided, otherwise %ENOTTY will be returned.
+ *	Do not call this function directly, call tty_tiocgserial().
+ *
+ * @set_serial: ``int ()(struct tty_struct *tty, struct serial_struct *p)``
+ *
+ *	Called when the @tty device receives a %TIOCSSERIAL ioctl. Passed a
+ *	kernel structure @p (&struct serial_struct) to set the values from.
+ *
+ *	Optional: called only if provided, otherwise %ENOTTY will be returned.
+ *	Do not call this function directly, call tty_tiocsserial().
+ *
+ * @show_fdinfo: ``void ()(struct tty_struct *tty, struct seq_file *m)``
+ *
+ *	Called when the @tty device file descriptor receives a fdinfo request
+ *	from VFS (to show in /proc/<pid>/fdinfo/). @m should be filled with
+ *	information.
+ *
+ *	Optional: called only if provided, otherwise nothing is written to @m.
+ *	Do not call this function directly, call tty_show_fdinfo().
+ *
+ * @poll_init: ``int ()(struct tty_driver *driver, int line, char *options)``
+ *
+ *	kgdboc support (Documentation/dev-tools/kgdb.rst). This routine is
+ *	called to initialize the HW for later use by calling @poll_get_char or
+ *	@poll_put_char.
+ *
+ *	Optional: called only if provided, otherwise skipped as a non-polling
+ *	driver.
+ *
+ * @poll_get_char: ``int ()(struct tty_driver *driver, int line)``
+ *
+ *	kgdboc support (see @poll_init). @driver should read a character from a
+ *	tty identified by @line and return it.
+ *
+ *	Optional: called only if @poll_init provided.
+ *
+ * @poll_put_char: ``void ()(struct tty_driver *driver, int line, char ch)``
+ *
+ *	kgdboc support (see @poll_init). @driver should write character @ch to
+ *	a tty identified by @line.
+ *
+ *	Optional: called only if @poll_init provided.
+ *
+ * @proc_show: ``int ()(struct seq_file *m, void *driver)``
+ *
+ *	Driver @driver (cast to &struct tty_driver) can show additional info in
+ *	/proc/tty/driver/<driver_name>. It is enough to fill in the information
+ *	into @m.
+ *
+ *	Optional: called only if provided, otherwise no /proc entry created.
+ *
+ * This structure defines the interface between the low-level tty driver and
+ * the tty routines. These routines can be defined. Unless noted otherwise,
+ * they are optional, and can be filled in with a %NULL pointer.
  */
-
-#include <linux/export.h>
-#include <linux/fs.h>
-#include <linux/kref.h>
-#include <linux/list.h>
-#include <linux/cdev.h>
-#include <linux/termios.h>
-#include <linux/seq_file.h>
-
-struct tty_struct;
-struct tty_driver;
-struct serial_icounter_struct;
-struct serial_struct;
-
 struct tty_operations {
 	struct tty_struct * (*lookup)(struct tty_driver *driver,
 			struct file *filp, int idx);
@@ -288,26 +390,64 @@ struct tty_operations {
 	int (*poll_get_char)(struct tty_driver *driver, int line);
 	void (*poll_put_char)(struct tty_driver *driver, int line, char ch);
 #endif
-	int (*proc_show)(struct seq_file *, void *);
+	int (*proc_show)(struct seq_file *m, void *driver);
 } __randomize_layout;
 
+/**
+ * struct tty_driver -- driver for TTY devices
+ *
+ * @magic: set to %TTY_DRIVER_MAGIC in __tty_alloc_driver()
+ * @kref: reference counting. Reaching zero frees all the internals and the
+ *	  driver.
+ * @cdevs: allocated/registered character /dev devices
+ * @owner: modules owning this driver. Used drivers cannot be rmmod'ed.
+ *	   Automatically set by tty_alloc_driver().
+ * @driver_name: name of the driver used in /proc/tty
+ * @name: used for constructing /dev node name
+ * @name_base: used as a number base for constructing /dev node name
+ * @major: major /dev device number (zero for autoassignment)
+ * @minor_start: the first minor /dev device number
+ * @num: number of devices allocated
+ * @type: type of tty driver (%TTY_DRIVER_TYPE_)
+ * @subtype: subtype of tty driver (%SYSTEM_TYPE_, %PTY_TYPE_, %SERIAL_TYPE_)
+ * @init_termios: termios to set to each tty initially (e.g. %tty_std_termios)
+ * @flags: tty driver flags (%TTY_DRIVER_)
+ * @proc_entry: proc fs entry, used internally
+ * @other: driver of the linked tty; only used for the PTY driver
+ * @ttys: array of active &struct tty_struct, set by tty_standard_install()
+ * @ports: array of &struct tty_port; can be set during initialization by
+ *	   tty_port_link_device() and similar
+ * @termios: storage for termios at each TTY close for the next open
+ * @driver_state: pointer to driver's arbitrary data
+ * @ops: driver hooks for TTYs. Set them using tty_set_operations(). Use &struct
+ *	 tty_port helpers in them as much as possible.
+ * @tty_drivers: used internally to link tty_drivers together
+ *
+ * The usual handling of &struct tty_driver is to allocate it by
+ * tty_alloc_driver(), set up all the necessary members, and register it by
+ * tty_register_driver(). At last, the driver is torn down by calling
+ * tty_unregister_driver() followed by tty_driver_kref_put().
+ *
+ * The fields required to be set before calling tty_register_driver() include
+ * @driver_name, @name, @type, @subtype, @init_termios, and @ops.
+ */
 struct tty_driver {
-	int	magic;		/* magic number for this structure */
-	struct kref kref;	/* Reference management */
+	int	magic;
+	struct kref kref;
 	struct cdev **cdevs;
 	struct module	*owner;
 	const char	*driver_name;
 	const char	*name;
-	int	name_base;	/* offset of printed name */
-	int	major;		/* major device number */
-	int	minor_start;	/* start of minor device number */
-	unsigned int	num;	/* number of devices allocated */
-	short	type;		/* type of tty driver */
-	short	subtype;	/* subtype of tty driver */
-	struct ktermios init_termios; /* Initial termios */
-	unsigned long	flags;		/* tty driver flags */
-	struct proc_dir_entry *proc_entry; /* /proc fs entry */
-	struct tty_driver *other; /* only used for the PTY driver */
+	int	name_base;
+	int	major;
+	int	minor_start;
+	unsigned int	num;
+	short	type;
+	short	subtype;
+	struct ktermios init_termios;
+	unsigned long	flags;
+	struct proc_dir_entry *proc_entry;
+	struct tty_driver *other;
 
 	/*
 	 * Pointer to the tty data structures
@@ -327,11 +467,11 @@ struct tty_driver {
 
 extern struct list_head tty_drivers;
 
-extern struct tty_driver *__tty_alloc_driver(unsigned int lines,
-		struct module *owner, unsigned long flags);
-extern struct tty_driver *tty_find_polling_driver(char *name, int *line);
+struct tty_driver *__tty_alloc_driver(unsigned int lines, struct module *owner,
+		unsigned long flags);
+struct tty_driver *tty_find_polling_driver(char *name, int *line);
 
-extern void tty_driver_kref_put(struct tty_driver *driver);
+void tty_driver_kref_put(struct tty_driver *driver);
 
 /* Use TTY_DRIVER_* flags below */
 #define tty_alloc_driver(lines, flags) \
@@ -352,49 +492,53 @@ static inline void tty_set_operations(struct tty_driver *driver,
 /* tty driver magic number */
 #define TTY_DRIVER_MAGIC		0x5402
 
-/*
- * tty driver flags
- * 
- * TTY_DRIVER_RESET_TERMIOS --- requests the tty layer to reset the
- * 	termios setting when the last process has closed the device.
- * 	Used for PTY's, in particular.
- * 
- * TTY_DRIVER_REAL_RAW --- if set, indicates that the driver will
- * 	guarantee never not to set any special character handling
- * 	flags if ((IGNBRK || (!BRKINT && !PARMRK)) && (IGNPAR ||
- * 	!INPCK)).  That is, if there is no reason for the driver to
- * 	send notifications of parity and break characters up to the
- * 	line driver, it won't do so.  This allows the line driver to
- *	optimize for this case if this flag is set.  (Note that there
- * 	is also a promise, if the above case is true, not to signal
- * 	overruns, either.)
- *
- * TTY_DRIVER_DYNAMIC_DEV --- if set, the individual tty devices need
- *	to be registered with a call to tty_register_device() when the
- *	device is found in the system and unregistered with a call to
- *	tty_unregister_device() so the devices will be show up
- *	properly in sysfs.  If not set, driver->num entries will be
- *	created by the tty core in sysfs when tty_register_driver() is
- *	called.  This is to be used by drivers that have tty devices
- *	that can appear and disappear while the main tty driver is
- *	registered with the tty core.
- *
- * TTY_DRIVER_DEVPTS_MEM -- don't use the standard arrays, instead
- *	use dynamic memory keyed through the devpts filesystem.  This
- *	is only applicable to the pty driver.
- *
- * TTY_DRIVER_HARDWARE_BREAK -- hardware handles break signals. Pass
- *	the requested timeout to the caller instead of using a simple
- *	on/off interface.
- *
- * TTY_DRIVER_DYNAMIC_ALLOC -- do not allocate structures which are
- *	needed per line for this driver as it would waste memory.
- *	The driver will take care.
- *
- * TTY_DRIVER_UNNUMBERED_NODE -- do not create numbered /dev nodes. In
- *	other words create /dev/ttyprintk and not /dev/ttyprintk0.
- *	Applicable only when a driver for a single tty device is
- *	being allocated.
+/**
+ * DOC: TTY Driver Flags
+ *
+ * TTY_DRIVER_RESET_TERMIOS
+ *	Requests the tty layer to reset the termios setting when the last
+ *	process has closed the device. Used for PTYs, in particular.
+ *
+ * TTY_DRIVER_REAL_RAW
+ *	Indicates that the driver will guarantee not to set any special
+ *	character handling flags if this is set for the tty:
+ *
+ *	``(IGNBRK || (!BRKINT && !PARMRK)) && (IGNPAR || !INPCK)``
+ *
+ *	That is, if there is no reason for the driver to
+ *	send notifications of parity and break characters up to the line
+ *	driver, it won't do so.  This allows the line driver to optimize for
+ *	this case if this flag is set.  (Note that there is also a promise, if
+ *	the above case is true, not to signal overruns, either.)
+ *
+ * TTY_DRIVER_DYNAMIC_DEV
+ *	The individual tty devices need to be registered with a call to
+ *	tty_register_device() when the device is found in the system and
+ *	unregistered with a call to tty_unregister_device() so the devices will
+ *	be show up properly in sysfs.  If not set, all &tty_driver.num entries
+ *	will be created by the tty core in sysfs when tty_register_driver() is
+ *	called.  This is to be used by drivers that have tty devices that can
+ *	appear and disappear while the main tty driver is registered with the
+ *	tty core.
+ *
+ * TTY_DRIVER_DEVPTS_MEM
+ *	Don't use the standard arrays (&tty_driver.ttys and
+ *	&tty_driver.termios), instead use dynamic memory keyed through the
+ *	devpts filesystem. This is only applicable to the PTY driver.
+ *
+ * TTY_DRIVER_HARDWARE_BREAK
+ *	Hardware handles break signals. Pass the requested timeout to the
+ *	&tty_operations.break_ctl instead of using a simple on/off interface.
+ *
+ * TTY_DRIVER_DYNAMIC_ALLOC
+ *	Do not allocate structures which are needed per line for this driver
+ *	(&tty_driver.ports) as it would waste memory. The driver will take
+ *	care. This is only applicable to the PTY driver.
+ *
+ * TTY_DRIVER_UNNUMBERED_NODE
+ *	Do not create numbered ``/dev`` nodes. For example, create
+ *	``/dev/ttyprintk`` and not ``/dev/ttyprintk0``. Applicable only when a
+ *	driver for a single tty device is being allocated.
  */
 #define TTY_DRIVER_INSTALLED		0x0001
 #define TTY_DRIVER_RESET_TERMIOS	0x0002
diff --git a/include/linux/tty_flip.h b/include/linux/tty_flip.h
index 32284992b31a..483d41cbcbb7 100644
--- a/include/linux/tty_flip.h
+++ b/include/linux/tty_flip.h
@@ -7,17 +7,16 @@
 
 struct tty_ldisc;
 
-extern int tty_buffer_set_limit(struct tty_port *port, int limit);
-extern unsigned int tty_buffer_space_avail(struct tty_port *port);
-extern int tty_buffer_request_room(struct tty_port *port, size_t size);
-extern int tty_insert_flip_string_flags(struct tty_port *port,
+int tty_buffer_set_limit(struct tty_port *port, int limit);
+unsigned int tty_buffer_space_avail(struct tty_port *port);
+int tty_buffer_request_room(struct tty_port *port, size_t size);
+int tty_insert_flip_string_flags(struct tty_port *port,
 		const unsigned char *chars, const char *flags, size_t size);
-extern int tty_insert_flip_string_fixed_flag(struct tty_port *port,
+int tty_insert_flip_string_fixed_flag(struct tty_port *port,
 		const unsigned char *chars, char flag, size_t size);
-extern int tty_prepare_flip_string(struct tty_port *port,
-		unsigned char **chars, size_t size);
-extern void tty_flip_buffer_push(struct tty_port *port);
-void tty_schedule_flip(struct tty_port *port);
+int tty_prepare_flip_string(struct tty_port *port, unsigned char **chars,
+		size_t size);
+void tty_flip_buffer_push(struct tty_port *port);
 int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag);
 
 static inline int tty_insert_flip_char(struct tty_port *port,
@@ -45,7 +44,7 @@ static inline int tty_insert_flip_string(struct tty_port *port,
 int tty_ldisc_receive_buf(struct tty_ldisc *ld, const unsigned char *p,
 		const char *f, int count);
 
-extern void tty_buffer_lock_exclusive(struct tty_port *port);
-extern void tty_buffer_unlock_exclusive(struct tty_port *port);
+void tty_buffer_lock_exclusive(struct tty_port *port);
+void tty_buffer_unlock_exclusive(struct tty_port *port);
 
 #endif /* _LINUX_TTY_FLIP_H */
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index b1d812e902aa..e85002b56752 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -4,127 +4,6 @@
 
 struct tty_struct;
 
-/*
- * This structure defines the interface between the tty line discipline
- * implementation and the tty routines.  The following routines can be
- * defined; unless noted otherwise, they are optional, and can be
- * filled in with a null pointer.
- *
- * int	(*open)(struct tty_struct *);
- *
- *	This function is called when the line discipline is associated
- *	with the tty.  The line discipline can use this as an
- *	opportunity to initialize any state needed by the ldisc routines.
- *
- * void	(*close)(struct tty_struct *);
- *
- *	This function is called when the line discipline is being
- *	shutdown, either because the tty is being closed or because
- *	the tty is being changed to use a new line discipline
- *
- * void	(*flush_buffer)(struct tty_struct *tty);
- *
- *	This function instructs the line discipline to clear its
- *	buffers of any input characters it may have queued to be
- *	delivered to the user mode process.
- *
- * ssize_t (*read)(struct tty_struct * tty, struct file * file,
- *		   unsigned char * buf, size_t nr);
- *
- *	This function is called when the user requests to read from
- *	the tty.  The line discipline will return whatever characters
- *	it has buffered up for the user.  If this function is not
- *	defined, the user will receive an EIO error.
- *
- * ssize_t (*write)(struct tty_struct * tty, struct file * file,
- *		    const unsigned char * buf, size_t nr);
- *
- *	This function is called when the user requests to write to the
- *	tty.  The line discipline will deliver the characters to the
- *	low-level tty device for transmission, optionally performing
- *	some processing on the characters first.  If this function is
- *	not defined, the user will receive an EIO error.
- *
- * int	(*ioctl)(struct tty_struct * tty, struct file * file,
- *		 unsigned int cmd, unsigned long arg);
- *
- *	This function is called when the user requests an ioctl which
- *	is not handled by the tty layer or the low-level tty driver.
- *	It is intended for ioctls which affect line discpline
- *	operation.  Note that the search order for ioctls is (1) tty
- *	layer, (2) tty low-level driver, (3) line discpline.  So a
- *	low-level driver can "grab" an ioctl request before the line
- *	discpline has a chance to see it.
- *
- * int	(*compat_ioctl)(struct tty_struct * tty, struct file * file,
- *		        unsigned int cmd, unsigned long arg);
- *
- *	Process ioctl calls from 32-bit process on 64-bit system
- *
- *	NOTE: only ioctls that are neither "pointer to compatible
- *	structure" nor tty-generic.  Something private that takes
- *	an integer or a pointer to wordsize-sensitive structure
- *	belongs here, but most of ldiscs will happily leave
- *	it NULL.
- *
- * void	(*set_termios)(struct tty_struct *tty, struct ktermios * old);
- *
- *	This function notifies the line discpline that a change has
- *	been made to the termios structure.
- *
- * int	(*poll)(struct tty_struct * tty, struct file * file,
- *		  poll_table *wait);
- *
- *	This function is called when a user attempts to select/poll on a
- *	tty device.  It is solely the responsibility of the line
- *	discipline to handle poll requests.
- *
- * void	(*receive_buf)(struct tty_struct *, const unsigned char *cp,
- *		       char *fp, int count);
- *
- *	This function is called by the low-level tty driver to send
- *	characters received by the hardware to the line discpline for
- *	processing.  <cp> is a pointer to the buffer of input
- *	character received by the device.  <fp> is a pointer to a
- *	pointer of flag bytes which indicate whether a character was
- *	received with a parity error, etc. <fp> may be NULL to indicate
- *	all data received is TTY_NORMAL.
- *
- * void	(*write_wakeup)(struct tty_struct *);
- *
- *	This function is called by the low-level tty driver to signal
- *	that line discpline should try to send more characters to the
- *	low-level driver for transmission.  If the line discpline does
- *	not have any more data to send, it can just return. If the line
- *	discipline does have some data to send, please arise a tasklet
- *	or workqueue to do the real data transfer. Do not send data in
- *	this hook, it may leads to a deadlock.
- *
- * int (*hangup)(struct tty_struct *)
- *
- *	Called on a hangup. Tells the discipline that it should
- *	cease I/O to the tty driver. Can sleep. The driver should
- *	seek to perform this action quickly but should wait until
- *	any pending driver I/O is completed.
- *
- * void (*dcd_change)(struct tty_struct *tty, unsigned int status)
- *
- *	Tells the discipline that the DCD pin has changed its status.
- *	Used exclusively by the N_PPS (Pulse-Per-Second) line discipline.
- *
- * int	(*receive_buf2)(struct tty_struct *, const unsigned char *cp,
- *			char *fp, int count);
- *
- *	This function is called by the low-level tty driver to send
- *	characters received by the hardware to the line discpline for
- *	processing.  <cp> is a pointer to the buffer of input
- *	character received by the device.  <fp> is a pointer to a
- *	pointer of flag bytes which indicate whether a character was
- *	received with a parity error, etc. <fp> may be NULL to indicate
- *	all data received is TTY_NORMAL.
- *	If assigned, prefer this function for automatic flow control.
- */
-
 #include <linux/fs.h>
 #include <linux/wait.h>
 #include <linux/atomic.h>
@@ -146,7 +25,7 @@ struct ld_semaphore {
 #endif
 };
 
-extern void __init_ldsem(struct ld_semaphore *sem, const char *name,
+void __init_ldsem(struct ld_semaphore *sem, const char *name,
 			 struct lock_class_key *key);
 
 #define init_ldsem(sem)						\
@@ -157,18 +36,18 @@ do {								\
 } while (0)
 
 
-extern int ldsem_down_read(struct ld_semaphore *sem, long timeout);
-extern int ldsem_down_read_trylock(struct ld_semaphore *sem);
-extern int ldsem_down_write(struct ld_semaphore *sem, long timeout);
-extern int ldsem_down_write_trylock(struct ld_semaphore *sem);
-extern void ldsem_up_read(struct ld_semaphore *sem);
-extern void ldsem_up_write(struct ld_semaphore *sem);
+int ldsem_down_read(struct ld_semaphore *sem, long timeout);
+int ldsem_down_read_trylock(struct ld_semaphore *sem);
+int ldsem_down_write(struct ld_semaphore *sem, long timeout);
+int ldsem_down_write_trylock(struct ld_semaphore *sem);
+void ldsem_up_read(struct ld_semaphore *sem);
+void ldsem_up_write(struct ld_semaphore *sem);
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
-extern int ldsem_down_read_nested(struct ld_semaphore *sem, int subclass,
-				  long timeout);
-extern int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
-				   long timeout);
+int ldsem_down_read_nested(struct ld_semaphore *sem, int subclass,
+		long timeout);
+int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
+		long timeout);
 #else
 # define ldsem_down_read_nested(sem, subclass, timeout)		\
 		ldsem_down_read(sem, timeout)
@@ -176,40 +55,179 @@ extern int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
 		ldsem_down_write(sem, timeout)
 #endif
 
-
+/**
+ * struct tty_ldisc_ops - ldisc operations
+ *
+ * @name: name of this ldisc rendered in /proc/tty/ldiscs
+ * @num: ``N_*`` number (%N_TTY, %N_HDLC, ...) reserved to this ldisc
+ *
+ * @open: [TTY] ``int ()(struct tty_struct *tty)``
+ *
+ *	This function is called when the line discipline is associated with the
+ *	@tty. No other call into the line discipline for this tty will occur
+ *	until it completes successfully. It should initialize any state needed
+ *	by the ldisc, and set @tty->receive_room to the maximum amount of data
+ *	the line discipline is willing to accept from the driver with a single
+ *	call to @receive_buf(). Returning an error will prevent the ldisc from
+ *	being attached.
+ *
+ *	Can sleep.
+ *
+ * @close: [TTY] ``void ()(struct tty_struct *tty)``
+ *
+ *	This function is called when the line discipline is being shutdown,
+ *	either because the @tty is being closed or because the @tty is being
+ *	changed to use a new line discipline. At the point of execution no
+ *	further users will enter the ldisc code for this tty.
+ *
+ *	Can sleep.
+ *
+ * @flush_buffer: [TTY] ``void ()(struct tty_struct *tty)``
+ *
+ *	This function instructs the line discipline to clear its buffers of any
+ *	input characters it may have queued to be delivered to the user mode
+ *	process. It may be called at any point between open and close.
+ *
+ * @read: [TTY] ``ssize_t ()(struct tty_struct *tty, struct file *file,
+ *		unsigned char *buf, size_t nr)``
+ *
+ *	This function is called when the user requests to read from the @tty.
+ *	The line discipline will return whatever characters it has buffered up
+ *	for the user. If this function is not defined, the user will receive
+ *	an %EIO error. Multiple read calls may occur in parallel and the ldisc
+ *	must deal with serialization issues.
+ *
+ *	Can sleep.
+ *
+ * @write: [TTY] ``ssize_t ()(struct tty_struct *tty, struct file *file,
+ *		const unsigned char *buf, size_t nr)``
+ *
+ *	This function is called when the user requests to write to the @tty.
+ *	The line discipline will deliver the characters to the low-level tty
+ *	device for transmission, optionally performing some processing on the
+ *	characters first. If this function is not defined, the user will
+ *	receive an %EIO error.
+ *
+ *	Can sleep.
+ *
+ * @ioctl: [TTY] ``int ()(struct tty_struct *tty, unsigned int cmd,
+ *		unsigned long arg)``
+ *
+ *	This function is called when the user requests an ioctl which is not
+ *	handled by the tty layer or the low-level tty driver. It is intended
+ *	for ioctls which affect line discpline operation.  Note that the search
+ *	order for ioctls is (1) tty layer, (2) tty low-level driver, (3) line
+ *	discpline. So a low-level driver can "grab" an ioctl request before
+ *	the line discpline has a chance to see it.
+ *
+ * @compat_ioctl: [TTY] ``int ()(struct tty_struct *tty, unsigned int cmd,
+ *		unsigned long arg)``
+ *
+ *	Process ioctl calls from 32-bit process on 64-bit system.
+ *
+ *	Note that only ioctls that are neither "pointer to compatible
+ *	structure" nor tty-generic.  Something private that takes an integer or
+ *	a pointer to wordsize-sensitive structure belongs here, but most of
+ *	ldiscs will happily leave it %NULL.
+ *
+ * @set_termios: [TTY] ``void ()(struct tty_struct *tty, struct ktermios *old)``
+ *
+ *	This function notifies the line discpline that a change has been made
+ *	to the termios structure.
+ *
+ * @poll: [TTY] ``int ()(struct tty_struct *tty, struct file *file,
+ *		  struct poll_table_struct *wait)``
+ *
+ *	This function is called when a user attempts to select/poll on a @tty
+ *	device. It is solely the responsibility of the line discipline to
+ *	handle poll requests.
+ *
+ * @hangup: [TTY] ``void ()(struct tty_struct *tty)``
+ *
+ *	Called on a hangup. Tells the discipline that it should cease I/O to
+ *	the tty driver. The driver should seek to perform this action quickly
+ *	but should wait until any pending driver I/O is completed. No further
+ *	calls into the ldisc code will occur.
+ *
+ *	Can sleep.
+ *
+ * @receive_buf: [DRV] ``void ()(struct tty_struct *tty,
+ *		       const unsigned char *cp, const char *fp, int count)``
+ *
+ *	This function is called by the low-level tty driver to send characters
+ *	received by the hardware to the line discpline for processing. @cp is
+ *	a pointer to the buffer of input character received by the device. @fp
+ *	is a pointer to an array of flag bytes which indicate whether a
+ *	character was received with a parity error, etc. @fp may be %NULL to
+ *	indicate all data received is %TTY_NORMAL.
+ *
+ * @write_wakeup: [DRV] ``void ()(struct tty_struct *tty)``
+ *
+ *	This function is called by the low-level tty driver to signal that line
+ *	discpline should try to send more characters to the low-level driver
+ *	for transmission. If the line discpline does not have any more data to
+ *	send, it can just return. If the line discipline does have some data to
+ *	send, please arise a tasklet or workqueue to do the real data transfer.
+ *	Do not send data in this hook, it may lead to a deadlock.
+ *
+ * @dcd_change: [DRV] ``void ()(struct tty_struct *tty, unsigned int status)``
+ *
+ *	Tells the discipline that the DCD pin has changed its status. Used
+ *	exclusively by the %N_PPS (Pulse-Per-Second) line discipline.
+ *
+ * @receive_buf2: [DRV] ``int ()(struct tty_struct *tty,
+ *			const unsigned char *cp, const char *fp, int count)``
+ *
+ *	This function is called by the low-level tty driver to send characters
+ *	received by the hardware to the line discpline for processing. @cp is a
+ *	pointer to the buffer of input character received by the device.  @fp
+ *	is a pointer to an array of flag bytes which indicate whether a
+ *	character was received with a parity error, etc. @fp may be %NULL to
+ *	indicate all data received is %TTY_NORMAL. If assigned, prefer this
+ *	function for automatic flow control.
+ *
+ * @owner: module containting this ldisc (for reference counting)
+ *
+ * This structure defines the interface between the tty line discipline
+ * implementation and the tty routines. The above routines can be defined.
+ * Unless noted otherwise, they are optional, and can be filled in with a %NULL
+ * pointer.
+ *
+ * Hooks marked [TTY] are invoked from the TTY core, the [DRV] ones from the
+ * tty_driver side.
+ */
 struct tty_ldisc_ops {
 	char	*name;
 	int	num;
-	int	flags;
 
 	/*
 	 * The following routines are called from above.
 	 */
-	int	(*open)(struct tty_struct *);
-	void	(*close)(struct tty_struct *);
+	int	(*open)(struct tty_struct *tty);
+	void	(*close)(struct tty_struct *tty);
 	void	(*flush_buffer)(struct tty_struct *tty);
 	ssize_t	(*read)(struct tty_struct *tty, struct file *file,
 			unsigned char *buf, size_t nr,
 			void **cookie, unsigned long offset);
 	ssize_t	(*write)(struct tty_struct *tty, struct file *file,
 			 const unsigned char *buf, size_t nr);
-	int	(*ioctl)(struct tty_struct *tty, struct file *file,
-			 unsigned int cmd, unsigned long arg);
-	int	(*compat_ioctl)(struct tty_struct *tty, struct file *file,
-				unsigned int cmd, unsigned long arg);
+	int	(*ioctl)(struct tty_struct *tty, unsigned int cmd,
+			unsigned long arg);
+	int	(*compat_ioctl)(struct tty_struct *tty, unsigned int cmd,
+			unsigned long arg);
 	void	(*set_termios)(struct tty_struct *tty, struct ktermios *old);
-	__poll_t (*poll)(struct tty_struct *, struct file *,
-			     struct poll_table_struct *);
-	int	(*hangup)(struct tty_struct *tty);
+	__poll_t (*poll)(struct tty_struct *tty, struct file *file,
+			     struct poll_table_struct *wait);
+	void	(*hangup)(struct tty_struct *tty);
 
 	/*
 	 * The following routines are called from below.
 	 */
-	void	(*receive_buf)(struct tty_struct *, const unsigned char *cp,
+	void	(*receive_buf)(struct tty_struct *tty, const unsigned char *cp,
 			       const char *fp, int count);
-	void	(*write_wakeup)(struct tty_struct *);
-	void	(*dcd_change)(struct tty_struct *, unsigned int);
-	int	(*receive_buf2)(struct tty_struct *, const unsigned char *cp,
+	void	(*write_wakeup)(struct tty_struct *tty);
+	void	(*dcd_change)(struct tty_struct *tty, unsigned int status);
+	int	(*receive_buf2)(struct tty_struct *tty, const unsigned char *cp,
 				const char *fp, int count);
 
 	struct  module *owner;
@@ -220,8 +238,6 @@ struct tty_ldisc {
 	struct tty_struct *tty;
 };
 
-#define LDISC_FLAG_DEFINED	0x00000001
-
 #define MODULE_ALIAS_LDISC(ldisc) \
 	MODULE_ALIAS("tty-ldisc-" __stringify(ldisc))
 
diff --git a/include/linux/tty_port.h b/include/linux/tty_port.h
index 6e86e9e118b6..58e9619116b7 100644
--- a/include/linux/tty_port.h
+++ b/include/linux/tty_port.h
@@ -2,42 +2,39 @@
 #ifndef _LINUX_TTY_PORT_H
 #define _LINUX_TTY_PORT_H
 
+#include <linux/kfifo.h>
 #include <linux/kref.h>
 #include <linux/mutex.h>
 #include <linux/tty_buffer.h>
 #include <linux/wait.h>
 
-/*
- * Port level information. Each device keeps its own port level information
- * so provide a common structure for those ports wanting to use common support
- * routines.
- *
- * The tty port has a different lifetime to the tty so must be kept apart.
- * In addition be careful as tty -> port mappings are valid for the life
- * of the tty object but in many cases port -> tty mappings are valid only
- * until a hangup so don't use the wrong path.
- */
-
 struct attribute_group;
 struct tty_driver;
 struct tty_port;
 struct tty_struct;
 
+/**
+ * struct tty_port_operations -- operations on tty_port
+ * @carrier_raised: return 1 if the carrier is raised on @port
+ * @dtr_rts: raise the DTR line if @raise is nonzero, otherwise lower DTR
+ * @shutdown: called when the last close completes or a hangup finishes IFF the
+ *	port was initialized. Do not use to free resources. Turn off the device
+ *	only. Called under the port mutex to serialize against @activate and
+ *	@shutdown.
+ * @activate: called under the port mutex from tty_port_open(), serialized using
+ *	the port mutex. Supposed to turn on the device.
+ *
+ *	FIXME: long term getting the tty argument *out* of this would be good
+ *	for consoles.
+ *
+ * @destruct: called on the final put of a port. Free resources, possibly incl.
+ *	the port itself.
+ */
 struct tty_port_operations {
-	/* Return 1 if the carrier is raised */
 	int (*carrier_raised)(struct tty_port *port);
-	/* Control the DTR line */
 	void (*dtr_rts)(struct tty_port *port, int raise);
-	/* Called when the last close completes or a hangup finishes
-	   IFF the port was initialized. Do not use to free resources. Called
-	   under the port mutex to serialize against activate/shutdowns */
 	void (*shutdown)(struct tty_port *port);
-	/* Called under the port mutex from tty_port_open, serialized using
-	   the port mutex */
-        /* FIXME: long term getting the tty argument *out* of this would be
-           good for consoles */
 	int (*activate)(struct tty_port *port, struct tty_struct *tty);
-	/* Called on the final put of a port */
 	void (*destruct)(struct tty_port *port);
 };
 
@@ -48,30 +45,79 @@ struct tty_port_client_operations {
 
 extern const struct tty_port_client_operations tty_port_default_client_ops;
 
+/**
+ * struct tty_port -- port level information
+ *
+ * @buf: buffer for this port, locked internally
+ * @tty: back pointer to &struct tty_struct, valid only if the tty is open. Use
+ *	 tty_port_tty_get() to obtain it (and tty_kref_put() to release).
+ * @itty: internal back pointer to &struct tty_struct. Avoid this. It should be
+ *	  eliminated in the long term.
+ * @ops: tty port operations (like activate, shutdown), see &struct
+ *	 tty_port_operations
+ * @client_ops: tty port client operations (like receive_buf, write_wakeup).
+ *		By default, tty_port_default_client_ops is used.
+ * @lock: lock protecting @tty
+ * @blocked_open: # of procs waiting for open in tty_port_block_til_ready()
+ * @count: usage count
+ * @open_wait: open waiters queue (waiting e.g. for a carrier)
+ * @delta_msr_wait: modem status change queue (waiting for MSR changes)
+ * @flags: user TTY flags (%ASYNC_)
+ * @iflags: internal flags (%TTY_PORT_)
+ * @console: when set, the port is a console
+ * @mutex: locking, for open, shutdown and other port operations
+ * @buf_mutex: @xmit_buf alloc lock
+ * @xmit_buf: optional xmit buffer used by some drivers
+ * @xmit_fifo: optional xmit buffer used by some drivers
+ * @close_delay: delay in jiffies to wait when closing the port
+ * @closing_wait: delay in jiffies for output to be sent before closing
+ * @drain_delay: set to zero if no pure time based drain is needed else set to
+ *		 size of fifo
+ * @kref: references counter. Reaching zero calls @ops->destruct() if non-%NULL
+ *	  or frees the port otherwise.
+ * @client_data: pointer to private data, for @client_ops
+ *
+ * Each device keeps its own port level information. &struct tty_port was
+ * introduced as a common structure for such information. As every TTY device
+ * shall have a backing tty_port structure, every driver can use these members.
+ *
+ * The tty port has a different lifetime to the tty so must be kept apart.
+ * In addition be careful as tty -> port mappings are valid for the life
+ * of the tty object but in many cases port -> tty mappings are valid only
+ * until a hangup so don't use the wrong path.
+ *
+ * Tty port shall be initialized by tty_port_init() and shut down either by
+ * tty_port_destroy() (refcounting not used), or tty_port_put() (refcounting).
+ *
+ * There is a lot of helpers around &struct tty_port too. To name the most
+ * significant ones: tty_port_open(), tty_port_close() (or
+ * tty_port_close_start() and tty_port_close_end() separately if need be), and
+ * tty_port_hangup(). These call @ops->activate() and @ops->shutdown() as
+ * needed.
+ */
 struct tty_port {
-	struct tty_bufhead	buf;		/* Locked internally */
-	struct tty_struct	*tty;		/* Back pointer */
-	struct tty_struct	*itty;		/* internal back ptr */
-	const struct tty_port_operations *ops;	/* Port operations */
-	const struct tty_port_client_operations *client_ops; /* Port client operations */
-	spinlock_t		lock;		/* Lock protecting tty field */
-	int			blocked_open;	/* Waiting to open */
-	int			count;		/* Usage count */
-	wait_queue_head_t	open_wait;	/* Open waiters */
-	wait_queue_head_t	delta_msr_wait;	/* Modem status change */
-	unsigned long		flags;		/* User TTY flags ASYNC_ */
-	unsigned long		iflags;		/* Internal flags TTY_PORT_ */
-	unsigned char		console:1;	/* port is a console */
-	struct mutex		mutex;		/* Locking */
-	struct mutex		buf_mutex;	/* Buffer alloc lock */
-	unsigned char		*xmit_buf;	/* Optional buffer */
-	unsigned int		close_delay;	/* Close port delay */
-	unsigned int		closing_wait;	/* Delay for output */
-	int			drain_delay;	/* Set to zero if no pure time
-						   based drain is needed else
-						   set to size of fifo */
-	struct kref		kref;		/* Ref counter */
-	void 			*client_data;
+	struct tty_bufhead	buf;
+	struct tty_struct	*tty;
+	struct tty_struct	*itty;
+	const struct tty_port_operations *ops;
+	const struct tty_port_client_operations *client_ops;
+	spinlock_t		lock;
+	int			blocked_open;
+	int			count;
+	wait_queue_head_t	open_wait;
+	wait_queue_head_t	delta_msr_wait;
+	unsigned long		flags;
+	unsigned long		iflags;
+	unsigned char		console:1;
+	struct mutex		mutex;
+	struct mutex		buf_mutex;
+	unsigned char		*xmit_buf;
+	DECLARE_KFIFO_PTR(xmit_fifo, unsigned char);
+	unsigned int		close_delay;
+	unsigned int		closing_wait;
+	int			drain_delay;
+	struct kref		kref;
+	void			*client_data;
 };
 
 /* tty_port::iflags bits -- use atomic bit ops */
diff --git a/include/linux/types.h b/include/linux/types.h
index ac825ad90e44..ea8cf60a8a79 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -226,6 +226,7 @@ struct callback_head {
 typedef void (*rcu_callback_t)(struct rcu_head *head);
 typedef void (*call_rcu_func_t)(struct rcu_head *head, rcu_callback_t func);
 
+typedef void (*swap_r_func_t)(void *a, void *b, int size, const void *priv);
 typedef void (*swap_func_t)(void *a, void *b, int size);
 
 typedef int (*cmp_r_func_t)(const void *a, const void *b, const void *priv);
diff --git a/include/linux/u64_stats_sync.h b/include/linux/u64_stats_sync.h
index e81856c0ba13..6ad4e9032d53 100644
--- a/include/linux/u64_stats_sync.h
+++ b/include/linux/u64_stats_sync.h
@@ -66,7 +66,7 @@
 #include <linux/seqlock.h>
 
 struct u64_stats_sync {
-#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && (defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT))
 	seqcount_t	seq;
 #endif
 };
@@ -83,6 +83,11 @@ static inline u64 u64_stats_read(const u64_stats_t *p)
 	return local64_read(&p->v);
 }
 
+static inline void u64_stats_set(u64_stats_t *p, u64 val)
+{
+	local64_set(&p->v, val);
+}
+
 static inline void u64_stats_add(u64_stats_t *p, unsigned long val)
 {
 	local64_add(val, &p->v);
@@ -104,6 +109,11 @@ static inline u64 u64_stats_read(const u64_stats_t *p)
 	return p->v;
 }
 
+static inline void u64_stats_set(u64_stats_t *p, u64 val)
+{
+	p->v = val;
+}
+
 static inline void u64_stats_add(u64_stats_t *p, unsigned long val)
 {
 	p->v += val;
@@ -115,7 +125,7 @@ static inline void u64_stats_inc(u64_stats_t *p)
 }
 #endif
 
-#if BITS_PER_LONG == 32 && defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && (defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT))
 #define u64_stats_init(syncp)	seqcount_init(&(syncp)->seq)
 #else
 static inline void u64_stats_init(struct u64_stats_sync *syncp)
@@ -125,15 +135,19 @@ static inline void u64_stats_init(struct u64_stats_sync *syncp)
 
 static inline void u64_stats_update_begin(struct u64_stats_sync *syncp)
 {
-#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && (defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT))
+	if (IS_ENABLED(CONFIG_PREEMPT_RT))
+		preempt_disable();
 	write_seqcount_begin(&syncp->seq);
 #endif
 }
 
 static inline void u64_stats_update_end(struct u64_stats_sync *syncp)
 {
-#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && (defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT))
 	write_seqcount_end(&syncp->seq);
+	if (IS_ENABLED(CONFIG_PREEMPT_RT))
+		preempt_enable();
 #endif
 }
 
@@ -142,8 +156,11 @@ u64_stats_update_begin_irqsave(struct u64_stats_sync *syncp)
 {
 	unsigned long flags = 0;
 
-#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
-	local_irq_save(flags);
+#if BITS_PER_LONG == 32 && (defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT))
+	if (IS_ENABLED(CONFIG_PREEMPT_RT))
+		preempt_disable();
+	else
+		local_irq_save(flags);
 	write_seqcount_begin(&syncp->seq);
 #endif
 	return flags;
@@ -153,15 +170,18 @@ static inline void
 u64_stats_update_end_irqrestore(struct u64_stats_sync *syncp,
 				unsigned long flags)
 {
-#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && (defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT))
 	write_seqcount_end(&syncp->seq);
-	local_irq_restore(flags);
+	if (IS_ENABLED(CONFIG_PREEMPT_RT))
+		preempt_enable();
+	else
+		local_irq_restore(flags);
 #endif
 }
 
 static inline unsigned int __u64_stats_fetch_begin(const struct u64_stats_sync *syncp)
 {
-#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && (defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT))
 	return read_seqcount_begin(&syncp->seq);
 #else
 	return 0;
@@ -170,7 +190,7 @@ static inline unsigned int __u64_stats_fetch_begin(const struct u64_stats_sync *
 
 static inline unsigned int u64_stats_fetch_begin(const struct u64_stats_sync *syncp)
 {
-#if BITS_PER_LONG==32 && !defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && (!defined(CONFIG_SMP) && !defined(CONFIG_PREEMPT_RT))
 	preempt_disable();
 #endif
 	return __u64_stats_fetch_begin(syncp);
@@ -179,7 +199,7 @@ static inline unsigned int u64_stats_fetch_begin(const struct u64_stats_sync *sy
 static inline bool __u64_stats_fetch_retry(const struct u64_stats_sync *syncp,
 					 unsigned int start)
 {
-#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && (defined(CONFIG_SMP) || defined(CONFIG_PREEMPT_RT))
 	return read_seqcount_retry(&syncp->seq, start);
 #else
 	return false;
@@ -189,7 +209,7 @@ static inline bool __u64_stats_fetch_retry(const struct u64_stats_sync *syncp,
 static inline bool u64_stats_fetch_retry(const struct u64_stats_sync *syncp,
 					 unsigned int start)
 {
-#if BITS_PER_LONG==32 && !defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && (!defined(CONFIG_SMP) && !defined(CONFIG_PREEMPT_RT))
 	preempt_enable();
 #endif
 	return __u64_stats_fetch_retry(syncp, start);
@@ -203,7 +223,9 @@ static inline bool u64_stats_fetch_retry(const struct u64_stats_sync *syncp,
  */
 static inline unsigned int u64_stats_fetch_begin_irq(const struct u64_stats_sync *syncp)
 {
-#if BITS_PER_LONG==32 && !defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && defined(CONFIG_PREEMPT_RT)
+	preempt_disable();
+#elif BITS_PER_LONG == 32 && !defined(CONFIG_SMP)
 	local_irq_disable();
 #endif
 	return __u64_stats_fetch_begin(syncp);
@@ -212,7 +234,9 @@ static inline unsigned int u64_stats_fetch_begin_irq(const struct u64_stats_sync
 static inline bool u64_stats_fetch_retry_irq(const struct u64_stats_sync *syncp,
 					     unsigned int start)
 {
-#if BITS_PER_LONG==32 && !defined(CONFIG_SMP)
+#if BITS_PER_LONG == 32 && defined(CONFIG_PREEMPT_RT)
+	preempt_enable();
+#elif BITS_PER_LONG == 32 && !defined(CONFIG_SMP)
 	local_irq_enable();
 #endif
 	return __u64_stats_fetch_retry(syncp, start);
diff --git a/include/linux/u64_stats_sync_api.h b/include/linux/u64_stats_sync_api.h
new file mode 100644
index 000000000000..c72ca63da44b
--- /dev/null
+++ b/include/linux/u64_stats_sync_api.h
@@ -0,0 +1 @@
+#include <linux/u64_stats_sync.h>
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index ac0394087f7d..546179418ffa 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -10,46 +10,6 @@
 
 #include <asm/uaccess.h>
 
-#ifdef CONFIG_SET_FS
-/*
- * Force the uaccess routines to be wired up for actual userspace access,
- * overriding any possible set_fs(KERNEL_DS) still lingering around.  Undone
- * using force_uaccess_end below.
- */
-static inline mm_segment_t force_uaccess_begin(void)
-{
-	mm_segment_t fs = get_fs();
-
-	set_fs(USER_DS);
-	return fs;
-}
-
-static inline void force_uaccess_end(mm_segment_t oldfs)
-{
-	set_fs(oldfs);
-}
-#else /* CONFIG_SET_FS */
-typedef struct {
-	/* empty dummy */
-} mm_segment_t;
-
-#ifndef TASK_SIZE_MAX
-#define TASK_SIZE_MAX			TASK_SIZE
-#endif
-
-#define uaccess_kernel()		(false)
-#define user_addr_max()			(TASK_SIZE_MAX)
-
-static inline mm_segment_t force_uaccess_begin(void)
-{
-	return (mm_segment_t) { };
-}
-
-static inline void force_uaccess_end(mm_segment_t oldfs)
-{
-}
-#endif /* CONFIG_SET_FS */
-
 /*
  * Architectures should provide two primitives (raw_copy_{to,from}_user())
  * and get rid of their private instances of copy_{to,from}_user() and
@@ -368,6 +328,25 @@ long strncpy_from_user_nofault(char *dst, const void __user *unsafe_addr,
 		long count);
 long strnlen_user_nofault(const void __user *unsafe_addr, long count);
 
+#ifndef __get_kernel_nofault
+#define __get_kernel_nofault(dst, src, type, label)	\
+do {							\
+	type __user *p = (type __force __user *)(src);	\
+	type data;					\
+	if (__get_user(data, p))			\
+		goto label;				\
+	*(type *)dst = data;				\
+} while (0)
+
+#define __put_kernel_nofault(dst, src, type, label)	\
+do {							\
+	type __user *p = (type __force __user *)(dst);	\
+	type data = *(type *)src;			\
+	if (__put_user(data, p))			\
+		goto label;				\
+} while (0)
+#endif
+
 /**
  * get_kernel_nofault(): safely attempt to read from a location
  * @val: read into this variable
@@ -401,8 +380,6 @@ static inline void user_access_restore(unsigned long flags) { }
 #endif
 
 #ifdef CONFIG_HARDENED_USERCOPY
-void usercopy_warn(const char *name, const char *detail, bool to_user,
-		   unsigned long offset, unsigned long len);
 void __noreturn usercopy_abort(const char *name, const char *detail,
 			       bool to_user, unsigned long offset,
 			       unsigned long len);
diff --git a/include/linux/udp.h b/include/linux/udp.h
index ae66dadd8543..254a2654400f 100644
--- a/include/linux/udp.h
+++ b/include/linux/udp.h
@@ -23,11 +23,6 @@ static inline struct udphdr *udp_hdr(const struct sk_buff *skb)
 	return (struct udphdr *)skb_transport_header(skb);
 }
 
-static inline struct udphdr *inner_udp_hdr(const struct sk_buff *skb)
-{
-	return (struct udphdr *)skb_inner_transport_header(skb);
-}
-
 #define UDP_HTABLE_SIZE_MIN		(CONFIG_BASE_SMALL ? 128 : 256)
 
 static inline u32 udp_hashfn(const struct net *net, u32 num, u32 mask)
diff --git a/include/linux/uio.h b/include/linux/uio.h
index 207101a9c5c3..739285fe5a2f 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -7,6 +7,7 @@
 
 #include <linux/kernel.h>
 #include <linux/thread_info.h>
+#include <linux/mm_types.h>
 #include <uapi/linux/uio.h>
 
 struct page;
@@ -35,6 +36,7 @@ struct iov_iter_state {
 
 struct iov_iter {
 	u8 iter_type;
+	bool nofault;
 	bool data_source;
 	size_t iov_offset;
 	size_t count;
@@ -133,7 +135,8 @@ size_t copy_page_from_iter_atomic(struct page *page, unsigned offset,
 				  size_t bytes, struct iov_iter *i);
 void iov_iter_advance(struct iov_iter *i, size_t bytes);
 void iov_iter_revert(struct iov_iter *i, size_t bytes);
-int iov_iter_fault_in_readable(const struct iov_iter *i, size_t bytes);
+size_t fault_in_iov_iter_readable(const struct iov_iter *i, size_t bytes);
+size_t fault_in_iov_iter_writeable(const struct iov_iter *i, size_t bytes);
 size_t iov_iter_single_seg_count(const struct iov_iter *i);
 size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes,
 			 struct iov_iter *i);
@@ -144,6 +147,12 @@ size_t _copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
 size_t _copy_from_iter(void *addr, size_t bytes, struct iov_iter *i);
 size_t _copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i);
 
+static inline size_t copy_folio_to_iter(struct folio *folio, size_t offset,
+		size_t bytes, struct iov_iter *i)
+{
+	return copy_page_to_iter(&folio->page, offset, bytes, i);
+}
+
 static __always_inline __must_check
 size_t copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i)
 {
@@ -194,7 +203,7 @@ bool copy_from_iter_full_nocache(void *addr, size_t bytes, struct iov_iter *i)
 #ifdef CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE
 /*
  * Note, users like pmem that depend on the stricter semantics of
- * copy_from_iter_flushcache() than copy_from_iter_nocache() must check for
+ * _copy_from_iter_flushcache() than _copy_from_iter_nocache() must check for
  * IS_ENABLED(CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE) before assuming that the
  * destination is flushed from the cache on return.
  */
@@ -209,24 +218,6 @@ size_t _copy_mc_to_iter(const void *addr, size_t bytes, struct iov_iter *i);
 #define _copy_mc_to_iter _copy_to_iter
 #endif
 
-static __always_inline __must_check
-size_t copy_from_iter_flushcache(void *addr, size_t bytes, struct iov_iter *i)
-{
-	if (unlikely(!check_copy_size(addr, bytes, false)))
-		return 0;
-	else
-		return _copy_from_iter_flushcache(addr, bytes, i);
-}
-
-static __always_inline __must_check
-size_t copy_mc_to_iter(void *addr, size_t bytes, struct iov_iter *i)
-{
-	if (unlikely(!check_copy_size(addr, bytes, true)))
-		return 0;
-	else
-		return _copy_mc_to_iter(addr, bytes, i);
-}
-
 size_t iov_iter_zero(size_t bytes, struct iov_iter *);
 unsigned long iov_iter_alignment(const struct iov_iter *i);
 unsigned long iov_iter_gap_alignment(const struct iov_iter *i);
@@ -282,6 +273,23 @@ static inline void iov_iter_reexpand(struct iov_iter *i, size_t count)
 	i->count = count;
 }
 
+static inline int
+iov_iter_npages_cap(struct iov_iter *i, int maxpages, size_t max_bytes)
+{
+	size_t shorted = 0;
+	int npages;
+
+	if (iov_iter_count(i) > max_bytes) {
+		shorted = iov_iter_count(i) - max_bytes;
+		iov_iter_truncate(i, max_bytes);
+	}
+	npages = iov_iter_npages(i, INT_MAX);
+	if (shorted)
+		iov_iter_reexpand(i, iov_iter_count(i) + shorted);
+
+	return npages;
+}
+
 struct csum_state {
 	__wsum csum;
 	size_t off;
diff --git a/include/linux/unaligned/packed_struct.h b/include/linux/unaligned/packed_struct.h
index c0d817de4df2..f4c8eaf4d012 100644
--- a/include/linux/unaligned/packed_struct.h
+++ b/include/linux/unaligned/packed_struct.h
@@ -1,7 +1,7 @@
 #ifndef _LINUX_UNALIGNED_PACKED_STRUCT_H
 #define _LINUX_UNALIGNED_PACKED_STRUCT_H
 
-#include <linux/kernel.h>
+#include <linux/types.h>
 
 struct __una_u16 { u16 x; } __packed;
 struct __una_u32 { u32 x; } __packed;
diff --git a/include/linux/unicode.h b/include/linux/unicode.h
index 74484d44c755..4d39e6e11a95 100644
--- a/include/linux/unicode.h
+++ b/include/linux/unicode.h
@@ -5,9 +5,52 @@
 #include <linux/init.h>
 #include <linux/dcache.h>
 
+struct utf8data;
+struct utf8data_table;
+
+#define UNICODE_MAJ_SHIFT		16
+#define UNICODE_MIN_SHIFT		8
+
+#define UNICODE_AGE(MAJ, MIN, REV)			\
+	(((unsigned int)(MAJ) << UNICODE_MAJ_SHIFT) |	\
+	 ((unsigned int)(MIN) << UNICODE_MIN_SHIFT) |	\
+	 ((unsigned int)(REV)))
+
+static inline u8 unicode_major(unsigned int age)
+{
+	return (age >> UNICODE_MAJ_SHIFT) & 0xff;
+}
+
+static inline u8 unicode_minor(unsigned int age)
+{
+	return (age >> UNICODE_MIN_SHIFT) & 0xff;
+}
+
+static inline u8 unicode_rev(unsigned int age)
+{
+	return age & 0xff;
+}
+
+/*
+ * Two normalization forms are supported:
+ * 1) NFDI
+ *   - Apply unicode normalization form NFD.
+ *   - Remove any Default_Ignorable_Code_Point.
+ * 2) NFDICF
+ *   - Apply unicode normalization form NFD.
+ *   - Remove any Default_Ignorable_Code_Point.
+ *   - Apply a full casefold (C + F).
+ */
+enum utf8_normalization {
+	UTF8_NFDI = 0,
+	UTF8_NFDICF,
+	UTF8_NMAX,
+};
+
 struct unicode_map {
-	const char *charset;
-	int version;
+	unsigned int version;
+	const struct utf8data *ntab[UTF8_NMAX];
+	const struct utf8data_table *tables;
 };
 
 int utf8_validate(const struct unicode_map *um, const struct qstr *str);
@@ -30,7 +73,7 @@ int utf8_casefold(const struct unicode_map *um, const struct qstr *str,
 int utf8_casefold_hash(const struct unicode_map *um, const void *salt,
 		       struct qstr *str);
 
-struct unicode_map *utf8_load(const char *version);
+struct unicode_map *utf8_load(unsigned int version);
 void utf8_unload(struct unicode_map *um);
 
 #endif /* _LINUX_UNICODE_H */
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 7ccaa76a9a96..200b7b79acb5 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -875,15 +875,6 @@ extern struct usb_host_interface *usb_find_alt_setting(
 		unsigned int iface_num,
 		unsigned int alt_num);
 
-#if IS_REACHABLE(CONFIG_USB)
-int usb_for_each_port(void *data, int (*fn)(struct device *, void *));
-#else
-static inline int usb_for_each_port(void *data, int (*fn)(struct device *, void *))
-{
-	return 0;
-}
-#endif
-
 /* port claiming functions */
 int usb_hub_claim_port(struct usb_device *hdev, unsigned port1,
 		struct usb_dev_state *owner);
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index 1cffa34740b0..969e7dba6358 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -33,7 +33,6 @@
 #ifndef __LINUX_USB_CH9_H
 #define __LINUX_USB_CH9_H
 
-#include <linux/device.h>
 #include <uapi/linux/usb/ch9.h>
 
 /* USB 3.2 SuperSpeed Plus phy signaling rate generation and lane count */
@@ -45,6 +44,8 @@ enum usb_ssp_rate {
 	USB_SSP_GEN_2x2,
 };
 
+struct device;
+
 extern const char *usb_ep_type_string(int ep_type);
 extern const char *usb_speed_string(enum usb_device_speed speed);
 extern enum usb_device_speed usb_get_maximum_speed(struct device *dev);
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index 2c1fc9212cf2..548a028f2dab 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -124,7 +124,6 @@ struct usb_hcd {
 #define HCD_FLAG_RH_RUNNING		5	/* root hub is running? */
 #define HCD_FLAG_DEAD			6	/* controller has died? */
 #define HCD_FLAG_INTF_AUTHORIZED	7	/* authorize interfaces? */
-#define HCD_FLAG_DEFER_RH_REGISTER	8	/* Defer roothub registration */
 
 	/* The flags can be tested using these macros; they are likely to
 	 * be slightly faster than test_bit().
@@ -135,7 +134,6 @@ struct usb_hcd {
 #define HCD_WAKEUP_PENDING(hcd)	((hcd)->flags & (1U << HCD_FLAG_WAKEUP_PENDING))
 #define HCD_RH_RUNNING(hcd)	((hcd)->flags & (1U << HCD_FLAG_RH_RUNNING))
 #define HCD_DEAD(hcd)		((hcd)->flags & (1U << HCD_FLAG_DEAD))
-#define HCD_DEFER_RH_REGISTER(hcd) ((hcd)->flags & (1U << HCD_FLAG_DEFER_RH_REGISTER))
 
 	/*
 	 * Specifies if interfaces are authorized by default
diff --git a/include/linux/usb/pd_bdo.h b/include/linux/usb/pd_bdo.h
index 033fe3e17141..7c25b88d79f9 100644
--- a/include/linux/usb/pd_bdo.h
+++ b/include/linux/usb/pd_bdo.h
@@ -15,7 +15,7 @@
 #define BDO_MODE_CARRIER2	(5 << 28)
 #define BDO_MODE_CARRIER3	(6 << 28)
 #define BDO_MODE_EYE		(7 << 28)
-#define BDO_MODE_TESTDATA	(8 << 28)
+#define BDO_MODE_TESTDATA	(8U << 28)
 
 #define BDO_MODE_MASK(mode)	((mode) & 0xf0000000)
 
diff --git a/include/linux/usb/role.h b/include/linux/usb/role.h
index 031f148ab373..b5deafd91f67 100644
--- a/include/linux/usb/role.h
+++ b/include/linux/usb/role.h
@@ -92,6 +92,12 @@ fwnode_usb_role_switch_get(struct fwnode_handle *node)
 static inline void usb_role_switch_put(struct usb_role_switch *sw) { }
 
 static inline struct usb_role_switch *
+usb_role_switch_find_by_fwnode(const struct fwnode_handle *fwnode)
+{
+	return NULL;
+}
+
+static inline struct usb_role_switch *
 usb_role_switch_register(struct device *parent,
 			 const struct usb_role_switch_desc *desc)
 {
diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h
index fd1c9f6a4e37..d3e65eb9e16f 100644
--- a/include/linux/usb/tegra_usb_phy.h
+++ b/include/linux/usb/tegra_usb_phy.h
@@ -18,6 +18,7 @@
 
 #include <linux/clk.h>
 #include <linux/gpio.h>
+#include <linux/regmap.h>
 #include <linux/reset.h>
 #include <linux/usb/otg.h>
 
@@ -30,6 +31,7 @@
  *      enter host mode
  * requires_extra_tuning_parameters: true if xcvr_hsslew, hssquelch_level
  *      and hsdiscon_level should be set for adequate signal quality
+ * requires_pmc_ao_power_up: true if USB AO is powered down by default
  */
 
 struct tegra_phy_soc_config {
@@ -37,6 +39,7 @@ struct tegra_phy_soc_config {
 	bool has_hostpc;
 	bool requires_usbmode_setup;
 	bool requires_extra_tuning_parameters;
+	bool requires_pmc_ao_power_up;
 };
 
 struct tegra_utmip_config {
@@ -62,6 +65,7 @@ enum tegra_usb_phy_port_speed {
 struct tegra_xtal_freq;
 
 struct tegra_usb_phy {
+	int irq;
 	int instance;
 	const struct tegra_xtal_freq *freq;
 	void __iomem *regs;
@@ -70,6 +74,7 @@ struct tegra_usb_phy {
 	struct clk *pll_u;
 	struct clk *pad_clk;
 	struct regulator *vbus;
+	struct regmap *pmc_regmap;
 	enum usb_dr_mode mode;
 	void *config;
 	const struct tegra_phy_soc_config *soc_config;
diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h
index e2e44bb1dad8..fdf737d48b3b 100644
--- a/include/linux/usb/typec.h
+++ b/include/linux/usb/typec.h
@@ -295,6 +295,9 @@ int typec_set_mode(struct typec_port *port, int mode);
 
 void *typec_get_drvdata(struct typec_port *port);
 
+int typec_get_fw_cap(struct typec_capability *cap,
+		     struct fwnode_handle *fwnode);
+
 int typec_find_pwr_opmode(const char *name);
 int typec_find_orientation(const char *name);
 int typec_find_port_power_role(const char *name);
@@ -305,16 +308,4 @@ void typec_partner_set_svdm_version(struct typec_partner *partner,
 				    enum usb_pd_svdm_ver svdm_version);
 int typec_get_negotiated_svdm_version(struct typec_port *port);
 
-#if IS_REACHABLE(CONFIG_TYPEC)
-int typec_link_port(struct device *port);
-void typec_unlink_port(struct device *port);
-#else
-static inline int typec_link_port(struct device *port)
-{
-	return 0;
-}
-
-static inline void typec_unlink_port(struct device *port) { }
-#endif
-
 #endif /* __LINUX_USB_TYPEC_H */
diff --git a/include/linux/usb/xhci-dbgp.h b/include/linux/usb/xhci-dbgp.h
index 0a37f1283bf0..01fe768873f9 100644
--- a/include/linux/usb/xhci-dbgp.h
+++ b/include/linux/usb/xhci-dbgp.h
@@ -15,7 +15,7 @@
 #define __LINUX_XHCI_DBGP_H
 
 #ifdef CONFIG_EARLY_PRINTK_USB_XDBC
-int __init early_xdbc_parse_parameter(char *s);
+int __init early_xdbc_parse_parameter(char *s, int keep_early);
 int __init early_xdbc_setup_hardware(void);
 void __init early_xdbc_register_console(void);
 #else
diff --git a/include/linux/user_events.h b/include/linux/user_events.h
new file mode 100644
index 000000000000..736e05603463
--- /dev/null
+++ b/include/linux/user_events.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Copyright (c) 2021, Microsoft Corporation.
+ *
+ * Authors:
+ *   Beau Belgrave <beaub@linux.microsoft.com>
+ */
+#ifndef _UAPI_LINUX_USER_EVENTS_H
+#define _UAPI_LINUX_USER_EVENTS_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#ifdef __KERNEL__
+#include <linux/uio.h>
+#else
+#include <sys/uio.h>
+#endif
+
+#define USER_EVENTS_SYSTEM "user_events"
+#define USER_EVENTS_PREFIX "u:"
+
+/* Bits 0-6 are for known probe types, Bit 7 is for unknown probes */
+#define EVENT_BIT_FTRACE 0
+#define EVENT_BIT_PERF 1
+#define EVENT_BIT_OTHER 7
+
+#define EVENT_STATUS_FTRACE (1 << EVENT_BIT_FTRACE)
+#define EVENT_STATUS_PERF (1 << EVENT_BIT_PERF)
+#define EVENT_STATUS_OTHER (1 << EVENT_BIT_OTHER)
+
+/* Create dynamic location entry within a 32-bit value */
+#define DYN_LOC(offset, size) ((size) << 16 | (offset))
+
+/*
+ * Describes an event registration and stores the results of the registration.
+ * This structure is passed to the DIAG_IOCSREG ioctl, callers at a minimum
+ * must set the size and name_args before invocation.
+ */
+struct user_reg {
+
+	/* Input: Size of the user_reg structure being used */
+	__u32 size;
+
+	/* Input: Pointer to string with event name, description and flags */
+	__u64 name_args;
+
+	/* Output: Byte index of the event within the status page */
+	__u32 status_index;
+
+	/* Output: Index of the event to use when writing data */
+	__u32 write_index;
+};
+
+#define DIAG_IOC_MAGIC '*'
+
+/* Requests to register a user_event */
+#define DIAG_IOCSREG _IOWR(DIAG_IOC_MAGIC, 0, struct user_reg*)
+
+/* Requests to delete a user_event */
+#define DIAG_IOCSDEL _IOW(DIAG_IOC_MAGIC, 1, char*)
+
+#endif /* _UAPI_LINUX_USER_EVENTS_H */
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 3972ab765de1..8943a209202e 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -6,6 +6,8 @@
 #include <linux/device.h>
 #include <linux/interrupt.h>
 #include <linux/vhost_iotlb.h>
+#include <linux/virtio_net.h>
+#include <linux/if_ether.h>
 
 /**
  * struct vdpa_calllback - vDPA callback definition.
@@ -62,7 +64,9 @@ struct vdpa_mgmt_dev;
  * struct vdpa_device - representation of a vDPA device
  * @dev: underlying device
  * @dma_dev: the actual device that is performing DMA
+ * @driver_override: driver name to force a match
  * @config: the configuration ops for this device.
+ * @cf_mutex: Protects get and set access to configuration layout.
  * @index: device index
  * @features_valid: were features initialized? for legacy guests
  * @use_va: indicate whether virtual address must be used by this device
@@ -73,11 +77,13 @@ struct vdpa_mgmt_dev;
 struct vdpa_device {
 	struct device dev;
 	struct device *dma_dev;
+	const char *driver_override;
 	const struct vdpa_config_ops *config;
+	struct mutex cf_mutex; /* Protects get/set config */
 	unsigned int index;
 	bool features_valid;
 	bool use_va;
-	int nvqs;
+	u32 nvqs;
 	struct vdpa_mgmt_dev *mdev;
 };
 
@@ -91,6 +97,15 @@ struct vdpa_iova_range {
 	u64 last;
 };
 
+struct vdpa_dev_set_config {
+	struct {
+		u8 mac[ETH_ALEN];
+		u16 mtu;
+		u16 max_vq_pairs;
+	} net;
+	u64 mask;
+};
+
 /**
  * Corresponding file area for device memory mapping
  * @file: vma->vm_file for the mapping
@@ -143,7 +158,7 @@ struct vdpa_map_file {
  *				@vdev: vdpa device
  *				@idx: virtqueue index
  *				@state: pointer to returned state (last_avail_idx)
- * @get_vq_notification:	Get the notification area for a virtqueue
+ * @get_vq_notification:	Get the notification area for a virtqueue (optional)
  *				@vdev: vdpa device
  *				@idx: virtqueue index
  *				Returns the notifcation area
@@ -157,20 +172,26 @@ struct vdpa_map_file {
  *				for the device
  *				@vdev: vdpa device
  *				Returns virtqueue algin requirement
- * @get_features:		Get virtio features supported by the device
+ * @get_device_features:	Get virtio features supported by the device
  *				@vdev: vdpa device
  *				Returns the virtio features support by the
  *				device
- * @set_features:		Set virtio features supported by the driver
+ * @set_driver_features:	Set virtio features supported by the driver
  *				@vdev: vdpa device
  *				@features: feature support by the driver
  *				Returns integer: success (0) or error (< 0)
+ * @get_driver_features:	Get the virtio driver features in action
+ *				@vdev: vdpa device
+ *				Returns the virtio features accepted
  * @set_config_cb:		Set the config interrupt callback
  *				@vdev: vdpa device
  *				@cb: virtio-vdev interrupt callback structure
  * @get_vq_num_max:		Get the max size of virtqueue
  *				@vdev: vdpa device
  *				Returns u16: max size of virtqueue
+ * @get_vq_num_min:		Get the min size of virtqueue (optional)
+ *				@vdev: vdpa device
+ *				Returns u16: min size of virtqueue
  * @get_device_id:		Get virtio device id
  *				@vdev: vdpa device
  *				Returns u32: virtio device id
@@ -186,7 +207,8 @@ struct vdpa_map_file {
  * @reset:			Reset device
  *				@vdev: vdpa device
  *				Returns integer: success (0) or error (< 0)
- * @get_config_size:		Get the size of the configuration space
+ * @get_config_size:		Get the size of the configuration space includes
+ *				fields that are conditional on feature bits.
  *				@vdev: vdpa device
  *				Returns size_t: configuration size
  * @get_config:			Read from device specific configuration space
@@ -257,15 +279,17 @@ struct vdpa_config_ops {
 	struct vdpa_notification_area
 	(*get_vq_notification)(struct vdpa_device *vdev, u16 idx);
 	/* vq irq is not expected to be changed once DRIVER_OK is set */
-	int (*get_vq_irq)(struct vdpa_device *vdv, u16 idx);
+	int (*get_vq_irq)(struct vdpa_device *vdev, u16 idx);
 
 	/* Device ops */
 	u32 (*get_vq_align)(struct vdpa_device *vdev);
-	u64 (*get_features)(struct vdpa_device *vdev);
-	int (*set_features)(struct vdpa_device *vdev, u64 features);
+	u64 (*get_device_features)(struct vdpa_device *vdev);
+	int (*set_driver_features)(struct vdpa_device *vdev, u64 features);
+	u64 (*get_driver_features)(struct vdpa_device *vdev);
 	void (*set_config_cb)(struct vdpa_device *vdev,
 			      struct vdpa_callback *cb);
 	u16 (*get_vq_num_max)(struct vdpa_device *vdev);
+	u16 (*get_vq_num_min)(struct vdpa_device *vdev);
 	u32 (*get_device_id)(struct vdpa_device *vdev);
 	u32 (*get_vendor_id)(struct vdpa_device *vdev);
 	u8 (*get_status)(struct vdpa_device *vdev);
@@ -314,10 +338,10 @@ struct vdpa_device *__vdpa_alloc_device(struct device *parent,
 				       dev_struct, member)), name, use_va), \
 				       dev_struct, member)
 
-int vdpa_register_device(struct vdpa_device *vdev, int nvqs);
+int vdpa_register_device(struct vdpa_device *vdev, u32 nvqs);
 void vdpa_unregister_device(struct vdpa_device *vdev);
 
-int _vdpa_register_device(struct vdpa_device *vdev, int nvqs);
+int _vdpa_register_device(struct vdpa_device *vdev, u32 nvqs);
 void _vdpa_unregister_device(struct vdpa_device *vdev);
 
 /**
@@ -369,39 +393,49 @@ static inline struct device *vdpa_get_dma_dev(struct vdpa_device *vdev)
 static inline int vdpa_reset(struct vdpa_device *vdev)
 {
 	const struct vdpa_config_ops *ops = vdev->config;
+	int ret;
 
+	mutex_lock(&vdev->cf_mutex);
 	vdev->features_valid = false;
-	return ops->reset(vdev);
+	ret = ops->reset(vdev);
+	mutex_unlock(&vdev->cf_mutex);
+	return ret;
 }
 
-static inline int vdpa_set_features(struct vdpa_device *vdev, u64 features)
+static inline int vdpa_set_features_unlocked(struct vdpa_device *vdev, u64 features)
 {
 	const struct vdpa_config_ops *ops = vdev->config;
+	int ret;
 
 	vdev->features_valid = true;
-	return ops->set_features(vdev, features);
+	ret = ops->set_driver_features(vdev, features);
+
+	return ret;
 }
 
-static inline void vdpa_get_config(struct vdpa_device *vdev,
-				   unsigned int offset, void *buf,
-				   unsigned int len)
+static inline int vdpa_set_features(struct vdpa_device *vdev, u64 features)
 {
-	const struct vdpa_config_ops *ops = vdev->config;
+	int ret;
+
+	mutex_lock(&vdev->cf_mutex);
+	ret = vdpa_set_features_unlocked(vdev, features);
+	mutex_unlock(&vdev->cf_mutex);
 
-	/*
-	 * Config accesses aren't supposed to trigger before features are set.
-	 * If it does happen we assume a legacy guest.
-	 */
-	if (!vdev->features_valid)
-		vdpa_set_features(vdev, 0);
-	ops->get_config(vdev, offset, buf, len);
+	return ret;
 }
 
+void vdpa_get_config(struct vdpa_device *vdev, unsigned int offset,
+		     void *buf, unsigned int len);
+void vdpa_set_config(struct vdpa_device *dev, unsigned int offset,
+		     const void *buf, unsigned int length);
+void vdpa_set_status(struct vdpa_device *vdev, u8 status);
+
 /**
  * struct vdpa_mgmtdev_ops - vdpa device ops
  * @dev_add: Add a vdpa device using alloc and register
  *	     @mdev: parent device to use for device addition
  *	     @name: name of the new vdpa device
+ *	     @config: config attributes to apply to the device under creation
  *	     Driver need to add a new device using _vdpa_register_device()
  *	     after fully initializing the vdpa device. Driver must return 0
  *	     on success or appropriate error code.
@@ -412,15 +446,28 @@ static inline void vdpa_get_config(struct vdpa_device *vdev,
  *	     _vdpa_unregister_device().
  */
 struct vdpa_mgmtdev_ops {
-	int (*dev_add)(struct vdpa_mgmt_dev *mdev, const char *name);
+	int (*dev_add)(struct vdpa_mgmt_dev *mdev, const char *name,
+		       const struct vdpa_dev_set_config *config);
 	void (*dev_del)(struct vdpa_mgmt_dev *mdev, struct vdpa_device *dev);
 };
 
+/**
+ * struct vdpa_mgmt_dev - vdpa management device
+ * @device: Management parent device
+ * @ops: operations supported by management device
+ * @id_table: Pointer to device id table of supported ids
+ * @config_attr_mask: bit mask of attributes of type enum vdpa_attr that
+ *		      management device support during dev_add callback
+ * @list: list entry
+ */
 struct vdpa_mgmt_dev {
 	struct device *device;
 	const struct vdpa_mgmtdev_ops *ops;
-	const struct virtio_device_id *id_table; /* supported ids */
+	const struct virtio_device_id *id_table;
+	u64 config_attr_mask;
 	struct list_head list;
+	u64 supported_features;
+	u32 max_supported_vqs;
 };
 
 int vdpa_mgmtdev_register(struct vdpa_mgmt_dev *mdev);
diff --git a/include/linux/vermagic.h b/include/linux/vermagic.h
index 1eaaa93c37bf..329d63babaeb 100644
--- a/include/linux/vermagic.h
+++ b/include/linux/vermagic.h
@@ -15,7 +15,7 @@
 #else
 #define MODULE_VERMAGIC_SMP ""
 #endif
-#ifdef CONFIG_PREEMPT
+#ifdef CONFIG_PREEMPT_BUILD
 #define MODULE_VERMAGIC_PREEMPT "preempt "
 #elif defined(CONFIG_PREEMPT_RT)
 #define MODULE_VERMAGIC_PREEMPT "preempt_rt "
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index b53a9557884a..66dda06ec42d 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -33,6 +33,7 @@ struct vfio_device {
 	struct vfio_group *group;
 	struct vfio_device_set *dev_set;
 	struct list_head dev_set_list;
+	unsigned int migration_flags;
 
 	/* Members below here are private, not for driver use */
 	refcount_t refcount;
@@ -55,6 +56,17 @@ struct vfio_device {
  * @match: Optional device name match callback (return: 0 for no-match, >0 for
  *         match, -errno for abort (ex. match with insufficient or incorrect
  *         additional args)
+ * @device_feature: Optional, fill in the VFIO_DEVICE_FEATURE ioctl
+ * @migration_set_state: Optional callback to change the migration state for
+ *         devices that support migration. It's mandatory for
+ *         VFIO_DEVICE_FEATURE_MIGRATION migration support.
+ *         The returned FD is used for data transfer according to the FSM
+ *         definition. The driver is responsible to ensure that FD reaches end
+ *         of stream or error whenever the migration FSM leaves a data transfer
+ *         state or before close_device() returns.
+ * @migration_get_state: Optional callback to get the migration state for
+ *         devices that support migration. It's mandatory for
+ *         VFIO_DEVICE_FEATURE_MIGRATION migration support.
  */
 struct vfio_device_ops {
 	char	*name;
@@ -69,69 +81,59 @@ struct vfio_device_ops {
 	int	(*mmap)(struct vfio_device *vdev, struct vm_area_struct *vma);
 	void	(*request)(struct vfio_device *vdev, unsigned int count);
 	int	(*match)(struct vfio_device *vdev, char *buf);
+	int	(*device_feature)(struct vfio_device *device, u32 flags,
+				  void __user *arg, size_t argsz);
+	struct file *(*migration_set_state)(
+		struct vfio_device *device,
+		enum vfio_device_mig_state new_state);
+	int (*migration_get_state)(struct vfio_device *device,
+				   enum vfio_device_mig_state *curr_state);
 };
 
-extern struct iommu_group *vfio_iommu_group_get(struct device *dev);
-extern void vfio_iommu_group_put(struct iommu_group *group, struct device *dev);
+/**
+ * vfio_check_feature - Validate user input for the VFIO_DEVICE_FEATURE ioctl
+ * @flags: Arg from the device_feature op
+ * @argsz: Arg from the device_feature op
+ * @supported_ops: Combination of VFIO_DEVICE_FEATURE_GET and SET the driver
+ *                 supports
+ * @minsz: Minimum data size the driver accepts
+ *
+ * For use in a driver's device_feature op. Checks that the inputs to the
+ * VFIO_DEVICE_FEATURE ioctl are correct for the driver's feature. Returns 1 if
+ * the driver should execute the get or set, otherwise the relevant
+ * value should be returned.
+ */
+static inline int vfio_check_feature(u32 flags, size_t argsz, u32 supported_ops,
+				    size_t minsz)
+{
+	if ((flags & (VFIO_DEVICE_FEATURE_GET | VFIO_DEVICE_FEATURE_SET)) &
+	    ~supported_ops)
+		return -EINVAL;
+	if (flags & VFIO_DEVICE_FEATURE_PROBE)
+		return 0;
+	/* Without PROBE one of GET or SET must be requested */
+	if (!(flags & (VFIO_DEVICE_FEATURE_GET | VFIO_DEVICE_FEATURE_SET)))
+		return -EINVAL;
+	if (argsz < minsz)
+		return -EINVAL;
+	return 1;
+}
 
 void vfio_init_group_dev(struct vfio_device *device, struct device *dev,
 			 const struct vfio_device_ops *ops);
 void vfio_uninit_group_dev(struct vfio_device *device);
 int vfio_register_group_dev(struct vfio_device *device);
+int vfio_register_emulated_iommu_dev(struct vfio_device *device);
 void vfio_unregister_group_dev(struct vfio_device *device);
 extern struct vfio_device *vfio_device_get_from_dev(struct device *dev);
 extern void vfio_device_put(struct vfio_device *device);
 
 int vfio_assign_device_set(struct vfio_device *device, void *set_id);
 
-/* events for the backend driver notify callback */
-enum vfio_iommu_notify_type {
-	VFIO_IOMMU_CONTAINER_CLOSE = 0,
-};
-
-/**
- * struct vfio_iommu_driver_ops - VFIO IOMMU driver callbacks
- */
-struct vfio_iommu_driver_ops {
-	char		*name;
-	struct module	*owner;
-	void		*(*open)(unsigned long arg);
-	void		(*release)(void *iommu_data);
-	ssize_t		(*read)(void *iommu_data, char __user *buf,
-				size_t count, loff_t *ppos);
-	ssize_t		(*write)(void *iommu_data, const char __user *buf,
-				 size_t count, loff_t *size);
-	long		(*ioctl)(void *iommu_data, unsigned int cmd,
-				 unsigned long arg);
-	int		(*mmap)(void *iommu_data, struct vm_area_struct *vma);
-	int		(*attach_group)(void *iommu_data,
-					struct iommu_group *group);
-	void		(*detach_group)(void *iommu_data,
-					struct iommu_group *group);
-	int		(*pin_pages)(void *iommu_data,
-				     struct iommu_group *group,
-				     unsigned long *user_pfn,
-				     int npage, int prot,
-				     unsigned long *phys_pfn);
-	int		(*unpin_pages)(void *iommu_data,
-				       unsigned long *user_pfn, int npage);
-	int		(*register_notifier)(void *iommu_data,
-					     unsigned long *events,
-					     struct notifier_block *nb);
-	int		(*unregister_notifier)(void *iommu_data,
-					       struct notifier_block *nb);
-	int		(*dma_rw)(void *iommu_data, dma_addr_t user_iova,
-				  void *data, size_t count, bool write);
-	struct iommu_domain *(*group_iommu_domain)(void *iommu_data,
-						   struct iommu_group *group);
-	void		(*notify)(void *iommu_data,
-				  enum vfio_iommu_notify_type event);
-};
-
-extern int vfio_register_iommu_driver(const struct vfio_iommu_driver_ops *ops);
-
-extern void vfio_unregister_iommu_driver(
-				const struct vfio_iommu_driver_ops *ops);
+int vfio_mig_get_next_state(struct vfio_device *device,
+			    enum vfio_device_mig_state cur_fsm,
+			    enum vfio_device_mig_state new_fsm,
+			    enum vfio_device_mig_state *next_fsm);
 
 /*
  * External user API
diff --git a/include/linux/vfio_pci_core.h b/include/linux/vfio_pci_core.h
index ef9a44b6cf5d..48f2dd3c568c 100644
--- a/include/linux/vfio_pci_core.h
+++ b/include/linux/vfio_pci_core.h
@@ -133,6 +133,8 @@ struct vfio_pci_core_device {
 	struct mutex		ioeventfds_lock;
 	struct list_head	ioeventfds_list;
 	struct vfio_pci_vf_token	*vf_token;
+	struct list_head		sriov_pfs_item;
+	struct vfio_pci_core_device	*sriov_pf_core_dev;
 	struct notifier_block	nb;
 	struct mutex		vma_lock;
 	struct list_head	vma_list;
@@ -159,8 +161,17 @@ extern ssize_t vfio_pci_config_rw(struct vfio_pci_core_device *vdev,
 extern ssize_t vfio_pci_bar_rw(struct vfio_pci_core_device *vdev, char __user *buf,
 			       size_t count, loff_t *ppos, bool iswrite);
 
+#ifdef CONFIG_VFIO_PCI_VGA
 extern ssize_t vfio_pci_vga_rw(struct vfio_pci_core_device *vdev, char __user *buf,
 			       size_t count, loff_t *ppos, bool iswrite);
+#else
+static inline ssize_t vfio_pci_vga_rw(struct vfio_pci_core_device *vdev,
+				      char __user *buf, size_t count,
+				      loff_t *ppos, bool iswrite)
+{
+	return -EINVAL;
+}
+#endif
 
 extern long vfio_pci_ioeventfd(struct vfio_pci_core_device *vdev, loff_t offset,
 			       uint64_t data, int count, int fd);
@@ -220,6 +231,8 @@ int vfio_pci_core_sriov_configure(struct pci_dev *pdev, int nr_virtfn);
 extern const struct pci_error_handlers vfio_pci_core_err_handlers;
 long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd,
 		unsigned long arg);
+int vfio_pci_core_ioctl_feature(struct vfio_device *device, u32 flags,
+				void __user *arg, size_t argsz);
 ssize_t vfio_pci_core_read(struct vfio_device *core_vdev, char __user *buf,
 		size_t count, loff_t *ppos);
 ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *buf,
@@ -230,6 +243,8 @@ int vfio_pci_core_match(struct vfio_device *core_vdev, char *buf);
 int vfio_pci_core_enable(struct vfio_pci_core_device *vdev);
 void vfio_pci_core_disable(struct vfio_pci_core_device *vdev);
 void vfio_pci_core_finish_enable(struct vfio_pci_core_device *vdev);
+pci_ers_result_t vfio_pci_core_aer_err_detected(struct pci_dev *pdev,
+						pci_channel_state_t state);
 
 static inline bool vfio_pci_is_vga(struct pci_dev *pdev)
 {
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 41edbc01ffa4..5464f398912a 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -133,11 +133,11 @@ bool is_virtio_device(struct device *dev);
 void virtio_break_device(struct virtio_device *dev);
 
 void virtio_config_changed(struct virtio_device *dev);
-int virtio_finalize_features(struct virtio_device *dev);
 #ifdef CONFIG_PM_SLEEP
 int virtio_device_freeze(struct virtio_device *dev);
 int virtio_device_restore(struct virtio_device *dev);
 #endif
+void virtio_reset_device(struct virtio_device *dev);
 
 size_t virtio_max_dma_size(struct virtio_device *vdev);
 
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index 8519b3ae5d52..b341dd62aa4d 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -62,8 +62,9 @@ struct virtio_shm_region {
  *	Returns the first 64 feature bits (all we currently need).
  * @finalize_features: confirm what device features we'll be using.
  *	vdev: the virtio_device
- *	This gives the final feature bits for the device: it can change
+ *	This sends the driver feature bits to the device: it can change
  *	the dev->feature bits if it wants.
+ * Note: despite the name this can be called any number of times.
  *	Returns 0 on success or error status
  * @bus_name: return the bus name associated with the device (optional)
  *	vdev: the virtio_device
diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h
index b465f8f3e554..a960de68ac69 100644
--- a/include/linux/virtio_net.h
+++ b/include/linux/virtio_net.h
@@ -7,9 +7,27 @@
 #include <uapi/linux/udp.h>
 #include <uapi/linux/virtio_net.h>
 
+static inline bool virtio_net_hdr_match_proto(__be16 protocol, __u8 gso_type)
+{
+	switch (gso_type & ~VIRTIO_NET_HDR_GSO_ECN) {
+	case VIRTIO_NET_HDR_GSO_TCPV4:
+		return protocol == cpu_to_be16(ETH_P_IP);
+	case VIRTIO_NET_HDR_GSO_TCPV6:
+		return protocol == cpu_to_be16(ETH_P_IPV6);
+	case VIRTIO_NET_HDR_GSO_UDP:
+		return protocol == cpu_to_be16(ETH_P_IP) ||
+		       protocol == cpu_to_be16(ETH_P_IPV6);
+	default:
+		return false;
+	}
+}
+
 static inline int virtio_net_hdr_set_proto(struct sk_buff *skb,
 					   const struct virtio_net_hdr *hdr)
 {
+	if (skb->protocol)
+		return 0;
+
 	switch (hdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN) {
 	case VIRTIO_NET_HDR_GSO_TCPV4:
 	case VIRTIO_NET_HDR_GSO_UDP:
@@ -88,9 +106,12 @@ static inline int virtio_net_hdr_to_skb(struct sk_buff *skb,
 			if (!skb->protocol) {
 				__be16 protocol = dev_parse_header_protocol(skb);
 
-				virtio_net_hdr_set_proto(skb, hdr);
-				if (protocol && protocol != skb->protocol)
+				if (!protocol)
+					virtio_net_hdr_set_proto(skb, hdr);
+				else if (!virtio_net_hdr_match_proto(protocol, hdr->gso_type))
 					return -EINVAL;
+				else
+					skb->protocol = protocol;
 			}
 retry:
 			if (!skb_flow_dissect_flow_keys_basic(NULL, skb, &keys,
@@ -120,10 +141,15 @@ retry:
 
 	if (hdr->gso_type != VIRTIO_NET_HDR_GSO_NONE) {
 		u16 gso_size = __virtio16_to_cpu(little_endian, hdr->gso_size);
+		unsigned int nh_off = p_off;
 		struct skb_shared_info *shinfo = skb_shinfo(skb);
 
+		/* UFO may not include transport header in gso_size. */
+		if (gso_type & SKB_GSO_UDP)
+			nh_off -= thlen;
+
 		/* Too small packets are not really GSO ones. */
-		if (skb->len - p_off > gso_size) {
+		if (skb->len - nh_off > gso_size) {
 			shinfo->gso_size = gso_size;
 			shinfo->gso_type = gso_type;
 
diff --git a/include/linux/virtio_pci_legacy.h b/include/linux/virtio_pci_legacy.h
new file mode 100644
index 000000000000..e5d665faf00e
--- /dev/null
+++ b/include/linux/virtio_pci_legacy.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_VIRTIO_PCI_LEGACY_H
+#define _LINUX_VIRTIO_PCI_LEGACY_H
+
+#include "linux/mod_devicetable.h"
+#include <linux/pci.h>
+#include <linux/virtio_pci.h>
+
+struct virtio_pci_legacy_device {
+	struct pci_dev *pci_dev;
+
+	/* Where to read and clear interrupt */
+	u8 __iomem *isr;
+	/* The IO mapping for the PCI config space (legacy mode only) */
+	void __iomem *ioaddr;
+
+	struct virtio_device_id id;
+};
+
+u64 vp_legacy_get_features(struct virtio_pci_legacy_device *ldev);
+u64 vp_legacy_get_driver_features(struct virtio_pci_legacy_device *ldev);
+void vp_legacy_set_features(struct virtio_pci_legacy_device *ldev,
+			u32 features);
+u8 vp_legacy_get_status(struct virtio_pci_legacy_device *ldev);
+void vp_legacy_set_status(struct virtio_pci_legacy_device *ldev,
+			u8 status);
+u16 vp_legacy_queue_vector(struct virtio_pci_legacy_device *ldev,
+			   u16 idx, u16 vector);
+u16 vp_legacy_config_vector(struct virtio_pci_legacy_device *ldev,
+		     u16 vector);
+void vp_legacy_set_queue_address(struct virtio_pci_legacy_device *ldev,
+			     u16 index, u32 queue_pfn);
+bool vp_legacy_get_queue_enable(struct virtio_pci_legacy_device *ldev,
+				u16 idx);
+void vp_legacy_set_queue_size(struct virtio_pci_legacy_device *ldev,
+			      u16 idx, u16 size);
+u16 vp_legacy_get_queue_size(struct virtio_pci_legacy_device *ldev,
+			     u16 idx);
+int vp_legacy_probe(struct virtio_pci_legacy_device *ldev);
+void vp_legacy_remove(struct virtio_pci_legacy_device *ldev);
+
+#endif
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
index a185cc75ff52..16a0a4fd000b 100644
--- a/include/linux/vm_event_item.h
+++ b/include/linux/vm_event_item.h
@@ -98,6 +98,9 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
 		THP_SPLIT_PAGE_FAILED,
 		THP_DEFERRED_SPLIT_PAGE,
 		THP_SPLIT_PMD,
+		THP_SCAN_EXCEED_NONE_PTE,
+		THP_SCAN_EXCEED_SWAP_PTE,
+		THP_SCAN_EXCEED_SHARED_PTE,
 #ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
 		THP_SPLIT_PUD,
 #endif
@@ -126,6 +129,9 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
 #ifdef CONFIG_SWAP
 		SWAP_RA,
 		SWAP_RA_HIT,
+#ifdef CONFIG_KSM
+		KSM_SWPIN_COPY,
+#endif
 #endif
 #ifdef CONFIG_X86
 		DIRECT_MAP_LEVEL2_SPLIT,
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 671d402c3778..b159c2789961 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -22,22 +22,18 @@ struct notifier_block;		/* in notifier.h */
 #define VM_USERMAP		0x00000008	/* suitable for remap_vmalloc_range */
 #define VM_DMA_COHERENT		0x00000010	/* dma_alloc_coherent */
 #define VM_UNINITIALIZED	0x00000020	/* vm_struct is not fully initialized */
-#define VM_NO_GUARD		0x00000040      /* don't add guard page */
+#define VM_NO_GUARD		0x00000040      /* ***DANGEROUS*** don't add guard page */
 #define VM_KASAN		0x00000080      /* has allocated kasan shadow memory */
 #define VM_FLUSH_RESET_PERMS	0x00000100	/* reset direct map and flush TLB on unmap, can't be freed in atomic context */
 #define VM_MAP_PUT_PAGES	0x00000200	/* put pages and free array in vfree */
-#define VM_NO_HUGE_VMAP		0x00000400	/* force PAGE_SIZE pte mapping */
+#define VM_ALLOW_HUGE_VMAP	0x00000400      /* Allow for huge pages on archs with HAVE_ARCH_HUGE_VMALLOC */
 
-/*
- * VM_KASAN is used slightly differently depending on CONFIG_KASAN_VMALLOC.
- *
- * If IS_ENABLED(CONFIG_KASAN_VMALLOC), VM_KASAN is set on a vm_struct after
- * shadow memory has been mapped. It's used to handle allocation errors so that
- * we don't try to poison shadow on free if it was never allocated.
- *
- * Otherwise, VM_KASAN is set for kasan_module_alloc() allocations and used to
- * determine which allocations need the module shadow freed.
- */
+#if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \
+	!defined(CONFIG_KASAN_VMALLOC)
+#define VM_DEFER_KMEMLEAK	0x00000800	/* defer kmemleak object creation */
+#else
+#define VM_DEFER_KMEMLEAK	0
+#endif
 
 /* bits [20..32] reserved for arch specific ioremap internals */
 
@@ -73,8 +69,8 @@ struct vmap_area {
 	/*
 	 * The following two variables can be packed, because
 	 * a vmap_area object can be either:
-	 *    1) in "free" tree (root is vmap_area_root)
-	 *    2) or "busy" tree (root is free_vmap_area_root)
+	 *    1) in "free" tree (root is free_vmap_area_root)
+	 *    2) or "busy" tree (root is vmap_area_root)
 	 */
 	union {
 		unsigned long subtree_max_size; /* in "free" tree */
@@ -119,6 +115,13 @@ static inline int arch_vmap_pte_supported_shift(unsigned long size)
 }
 #endif
 
+#ifndef arch_vmap_pgprot_tagged
+static inline pgprot_t arch_vmap_pgprot_tagged(pgprot_t prot)
+{
+	return prot;
+}
+#endif
+
 /*
  *	Highlevel APIs for driver use
  */
@@ -136,21 +139,26 @@ static inline void vmalloc_init(void)
 static inline unsigned long vmalloc_nr_pages(void) { return 0; }
 #endif
 
-extern void *vmalloc(unsigned long size);
-extern void *vzalloc(unsigned long size);
-extern void *vmalloc_user(unsigned long size);
-extern void *vmalloc_node(unsigned long size, int node);
-extern void *vzalloc_node(unsigned long size, int node);
-extern void *vmalloc_32(unsigned long size);
-extern void *vmalloc_32_user(unsigned long size);
-extern void *__vmalloc(unsigned long size, gfp_t gfp_mask);
+extern void *vmalloc(unsigned long size) __alloc_size(1);
+extern void *vzalloc(unsigned long size) __alloc_size(1);
+extern void *vmalloc_user(unsigned long size) __alloc_size(1);
+extern void *vmalloc_node(unsigned long size, int node) __alloc_size(1);
+extern void *vzalloc_node(unsigned long size, int node) __alloc_size(1);
+extern void *vmalloc_32(unsigned long size) __alloc_size(1);
+extern void *vmalloc_32_user(unsigned long size) __alloc_size(1);
+extern void *__vmalloc(unsigned long size, gfp_t gfp_mask) __alloc_size(1);
 extern void *__vmalloc_node_range(unsigned long size, unsigned long align,
 			unsigned long start, unsigned long end, gfp_t gfp_mask,
 			pgprot_t prot, unsigned long vm_flags, int node,
-			const void *caller);
+			const void *caller) __alloc_size(1);
 void *__vmalloc_node(unsigned long size, unsigned long align, gfp_t gfp_mask,
-		int node, const void *caller);
-void *vmalloc_no_huge(unsigned long size);
+		int node, const void *caller) __alloc_size(1);
+void *vmalloc_huge(unsigned long size, gfp_t gfp_mask) __alloc_size(1);
+
+extern void *__vmalloc_array(size_t n, size_t size, gfp_t flags) __alloc_size(1, 2);
+extern void *vmalloc_array(size_t n, size_t size) __alloc_size(1, 2);
+extern void *__vcalloc(size_t n, size_t size, gfp_t flags) __alloc_size(1, 2);
+extern void *vcalloc(size_t n, size_t size) __alloc_size(1, 2);
 
 extern void vfree(const void *addr);
 extern void vfree_atomic(const void *addr);
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index d6a6cf53b127..bfe38869498d 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -415,6 +415,78 @@ static inline void drain_zonestat(struct zone *zone,
 			struct per_cpu_zonestat *pzstats) { }
 #endif		/* CONFIG_SMP */
 
+static inline void __zone_stat_mod_folio(struct folio *folio,
+		enum zone_stat_item item, long nr)
+{
+	__mod_zone_page_state(folio_zone(folio), item, nr);
+}
+
+static inline void __zone_stat_add_folio(struct folio *folio,
+		enum zone_stat_item item)
+{
+	__mod_zone_page_state(folio_zone(folio), item, folio_nr_pages(folio));
+}
+
+static inline void __zone_stat_sub_folio(struct folio *folio,
+		enum zone_stat_item item)
+{
+	__mod_zone_page_state(folio_zone(folio), item, -folio_nr_pages(folio));
+}
+
+static inline void zone_stat_mod_folio(struct folio *folio,
+		enum zone_stat_item item, long nr)
+{
+	mod_zone_page_state(folio_zone(folio), item, nr);
+}
+
+static inline void zone_stat_add_folio(struct folio *folio,
+		enum zone_stat_item item)
+{
+	mod_zone_page_state(folio_zone(folio), item, folio_nr_pages(folio));
+}
+
+static inline void zone_stat_sub_folio(struct folio *folio,
+		enum zone_stat_item item)
+{
+	mod_zone_page_state(folio_zone(folio), item, -folio_nr_pages(folio));
+}
+
+static inline void __node_stat_mod_folio(struct folio *folio,
+		enum node_stat_item item, long nr)
+{
+	__mod_node_page_state(folio_pgdat(folio), item, nr);
+}
+
+static inline void __node_stat_add_folio(struct folio *folio,
+		enum node_stat_item item)
+{
+	__mod_node_page_state(folio_pgdat(folio), item, folio_nr_pages(folio));
+}
+
+static inline void __node_stat_sub_folio(struct folio *folio,
+		enum node_stat_item item)
+{
+	__mod_node_page_state(folio_pgdat(folio), item, -folio_nr_pages(folio));
+}
+
+static inline void node_stat_mod_folio(struct folio *folio,
+		enum node_stat_item item, long nr)
+{
+	mod_node_page_state(folio_pgdat(folio), item, nr);
+}
+
+static inline void node_stat_add_folio(struct folio *folio,
+		enum node_stat_item item)
+{
+	mod_node_page_state(folio_pgdat(folio), item, folio_nr_pages(folio));
+}
+
+static inline void node_stat_sub_folio(struct folio *folio,
+		enum node_stat_item item)
+{
+	mod_node_page_state(folio_pgdat(folio), item, -folio_nr_pages(folio));
+}
+
 static inline void __mod_zone_freepage_state(struct zone *zone, int nr_pages,
 					     int migratetype)
 {
@@ -525,12 +597,6 @@ static inline void mod_lruvec_page_state(struct page *page,
 
 #endif /* CONFIG_MEMCG */
 
-static inline void inc_lruvec_state(struct lruvec *lruvec,
-				    enum node_stat_item idx)
-{
-	mod_lruvec_state(lruvec, idx, 1);
-}
-
 static inline void __inc_lruvec_page_state(struct page *page,
 					   enum node_stat_item idx)
 {
@@ -543,6 +609,24 @@ static inline void __dec_lruvec_page_state(struct page *page,
 	__mod_lruvec_page_state(page, idx, -1);
 }
 
+static inline void __lruvec_stat_mod_folio(struct folio *folio,
+					   enum node_stat_item idx, int val)
+{
+	__mod_lruvec_page_state(&folio->page, idx, val);
+}
+
+static inline void __lruvec_stat_add_folio(struct folio *folio,
+					   enum node_stat_item idx)
+{
+	__lruvec_stat_mod_folio(folio, idx, folio_nr_pages(folio));
+}
+
+static inline void __lruvec_stat_sub_folio(struct folio *folio,
+					   enum node_stat_item idx)
+{
+	__lruvec_stat_mod_folio(folio, idx, -folio_nr_pages(folio));
+}
+
 static inline void inc_lruvec_page_state(struct page *page,
 					 enum node_stat_item idx)
 {
@@ -555,4 +639,21 @@ static inline void dec_lruvec_page_state(struct page *page,
 	mod_lruvec_page_state(page, idx, -1);
 }
 
+static inline void lruvec_stat_mod_folio(struct folio *folio,
+					 enum node_stat_item idx, int val)
+{
+	mod_lruvec_page_state(&folio->page, idx, val);
+}
+
+static inline void lruvec_stat_add_folio(struct folio *folio,
+					 enum node_stat_item idx)
+{
+	lruvec_stat_mod_folio(folio, idx, folio_nr_pages(folio));
+}
+
+static inline void lruvec_stat_sub_folio(struct folio *folio,
+					 enum node_stat_item idx)
+{
+	lruvec_stat_mod_folio(folio, idx, -folio_nr_pages(folio));
+}
 #endif /* _LINUX_VMSTAT_H */
diff --git a/include/linux/vmw_vmci_defs.h b/include/linux/vmw_vmci_defs.h
index e36cb114c188..6fb663b36f72 100644
--- a/include/linux/vmw_vmci_defs.h
+++ b/include/linux/vmw_vmci_defs.h
@@ -12,15 +12,20 @@
 #include <linux/bits.h>
 
 /* Register offsets. */
-#define VMCI_STATUS_ADDR      0x00
-#define VMCI_CONTROL_ADDR     0x04
-#define VMCI_ICR_ADDR	      0x08
-#define VMCI_IMR_ADDR         0x0c
-#define VMCI_DATA_OUT_ADDR    0x10
-#define VMCI_DATA_IN_ADDR     0x14
-#define VMCI_CAPS_ADDR        0x18
-#define VMCI_RESULT_LOW_ADDR  0x1c
-#define VMCI_RESULT_HIGH_ADDR 0x20
+#define VMCI_STATUS_ADDR        0x00
+#define VMCI_CONTROL_ADDR       0x04
+#define VMCI_ICR_ADDR           0x08
+#define VMCI_IMR_ADDR           0x0c
+#define VMCI_DATA_OUT_ADDR      0x10
+#define VMCI_DATA_IN_ADDR       0x14
+#define VMCI_CAPS_ADDR          0x18
+#define VMCI_RESULT_LOW_ADDR    0x1c
+#define VMCI_RESULT_HIGH_ADDR   0x20
+#define VMCI_DATA_OUT_LOW_ADDR  0x24
+#define VMCI_DATA_OUT_HIGH_ADDR 0x28
+#define VMCI_DATA_IN_LOW_ADDR   0x2c
+#define VMCI_DATA_IN_HIGH_ADDR  0x30
+#define VMCI_GUEST_PAGE_SHIFT   0x34
 
 /* Max number of devices. */
 #define VMCI_MAX_DEVICES 1
@@ -39,17 +44,27 @@
 #define VMCI_CAPS_DATAGRAM      BIT(2)
 #define VMCI_CAPS_NOTIFICATIONS BIT(3)
 #define VMCI_CAPS_PPN64         BIT(4)
+#define VMCI_CAPS_DMA_DATAGRAM  BIT(5)
 
 /* Interrupt Cause register bits. */
 #define VMCI_ICR_DATAGRAM      BIT(0)
 #define VMCI_ICR_NOTIFICATION  BIT(1)
+#define VMCI_ICR_DMA_DATAGRAM  BIT(2)
 
 /* Interrupt Mask register bits. */
 #define VMCI_IMR_DATAGRAM      BIT(0)
 #define VMCI_IMR_NOTIFICATION  BIT(1)
+#define VMCI_IMR_DMA_DATAGRAM  BIT(2)
 
-/* Maximum MSI/MSI-X interrupt vectors in the device. */
-#define VMCI_MAX_INTRS 2
+/*
+ * Maximum MSI/MSI-X interrupt vectors in the device.
+ * If VMCI_CAPS_DMA_DATAGRAM is supported by the device,
+ * VMCI_MAX_INTRS_DMA_DATAGRAM vectors are available,
+ * otherwise only VMCI_MAX_INTRS_NOTIFICATION.
+ */
+#define VMCI_MAX_INTRS_NOTIFICATION 2
+#define VMCI_MAX_INTRS_DMA_DATAGRAM 3
+#define VMCI_MAX_INTRS              VMCI_MAX_INTRS_DMA_DATAGRAM
 
 /*
  * Supported interrupt vectors.  There is one for each ICR value above,
@@ -58,6 +73,7 @@
 enum {
 	VMCI_INTR_DATAGRAM = 0,
 	VMCI_INTR_NOTIFICATION = 1,
+	VMCI_INTR_DMA_DATAGRAM = 2,
 };
 
 /*
@@ -83,6 +99,52 @@ enum {
 #define VMCI_MAX_PINNED_QP_MEMORY ((size_t)(32 * 1024))
 
 /*
+ * The version of the VMCI device that supports MMIO access to registers
+ * requests 256KB for BAR1 whereas the version of VMCI that supports
+ * MSI/MSI-X only requests 8KB. The layout of the larger 256KB region is:
+ * - the first 128KB are used for MSI/MSI-X.
+ * - the following 64KB are used for MMIO register access.
+ * - the remaining 64KB are unused.
+ */
+#define VMCI_WITH_MMIO_ACCESS_BAR_SIZE ((size_t)(256 * 1024))
+#define VMCI_MMIO_ACCESS_OFFSET        ((size_t)(128 * 1024))
+#define VMCI_MMIO_ACCESS_SIZE          ((size_t)(64 * 1024))
+
+/*
+ * For VMCI devices supporting the VMCI_CAPS_DMA_DATAGRAM capability, the
+ * sending and receiving of datagrams can be performed using DMA to/from
+ * a driver allocated buffer.
+ * Sending and receiving will be handled as follows:
+ * - when sending datagrams, the driver initializes the buffer where the
+ *   data part will refer to the outgoing VMCI datagram, sets the busy flag
+ *   to 1 and writes the address of the buffer to VMCI_DATA_OUT_HIGH_ADDR
+ *   and VMCI_DATA_OUT_LOW_ADDR. Writing to VMCI_DATA_OUT_LOW_ADDR triggers
+ *   the device processing of the buffer. When the device has processed the
+ *   buffer, it will write the result value to the buffer and then clear the
+ *   busy flag.
+ * - when receiving datagrams, the driver initializes the buffer where the
+ *   data part will describe the receive buffer, clears the busy flag and
+ *   writes the address of the buffer to VMCI_DATA_IN_HIGH_ADDR and
+ *   VMCI_DATA_IN_LOW_ADDR. Writing to VMCI_DATA_IN_LOW_ADDR triggers the
+ *   device processing of the buffer. The device will copy as many available
+ *   datagrams into the buffer as possible, and then sets the busy flag.
+ *   When the busy flag is set, the driver will process the datagrams in the
+ *   buffer.
+ */
+struct vmci_data_in_out_header {
+	uint32_t busy;
+	uint32_t opcode;
+	uint32_t size;
+	uint32_t rsvd;
+	uint64_t result;
+};
+
+struct vmci_sg_elem {
+	uint64_t addr;
+	uint64_t size;
+};
+
+/*
  * We have a fixed set of resource IDs available in the VMX.
  * This allows us to have a very simple implementation since we statically
  * know how many will create datagram handles. If a new caller arrives and
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 93dab0e9580f..851e07da2583 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -217,6 +217,7 @@ void __wake_up_sync_key(struct wait_queue_head *wq_head, unsigned int mode, void
 void __wake_up_locked_sync_key(struct wait_queue_head *wq_head, unsigned int mode, void *key);
 void __wake_up_locked(struct wait_queue_head *wq_head, unsigned int mode, int nr);
 void __wake_up_sync(struct wait_queue_head *wq_head, unsigned int mode);
+void __wake_up_pollfree(struct wait_queue_head *wq_head);
 
 #define wake_up(x)			__wake_up(x, TASK_NORMAL, 1, NULL)
 #define wake_up_nr(x, nr)		__wake_up(x, TASK_NORMAL, nr, NULL)
@@ -245,6 +246,31 @@ void __wake_up_sync(struct wait_queue_head *wq_head, unsigned int mode);
 #define wake_up_interruptible_sync_poll_locked(x, m)				\
 	__wake_up_locked_sync_key((x), TASK_INTERRUPTIBLE, poll_to_key(m))
 
+/**
+ * wake_up_pollfree - signal that a polled waitqueue is going away
+ * @wq_head: the wait queue head
+ *
+ * In the very rare cases where a ->poll() implementation uses a waitqueue whose
+ * lifetime is tied to a task rather than to the 'struct file' being polled,
+ * this function must be called before the waitqueue is freed so that
+ * non-blocking polls (e.g. epoll) are notified that the queue is going away.
+ *
+ * The caller must also RCU-delay the freeing of the wait_queue_head, e.g. via
+ * an explicit synchronize_rcu() or call_rcu(), or via SLAB_TYPESAFE_BY_RCU.
+ */
+static inline void wake_up_pollfree(struct wait_queue_head *wq_head)
+{
+	/*
+	 * For performance reasons, we don't always take the queue lock here.
+	 * Therefore, we might race with someone removing the last entry from
+	 * the queue, and proceed while they still hold the queue lock.
+	 * However, rcu_read_lock() is required to be held in such cases, so we
+	 * can safely proceed with an RCU-delayed free.
+	 */
+	if (waitqueue_active(wq_head))
+		__wake_up_pollfree(wq_head);
+}
+
 #define ___wait_cond_timeout(condition)						\
 ({										\
 	bool __cond = (condition);						\
@@ -1160,6 +1186,7 @@ int autoremove_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, i
 		(wait)->flags = 0;						\
 	} while (0)
 
-bool try_invoke_on_locked_down_task(struct task_struct *p, bool (*func)(struct task_struct *t, void *arg), void *arg);
+typedef int (*task_call_f)(struct task_struct *p, void *arg);
+extern int task_call_func(struct task_struct *p, task_call_f func, void *arg);
 
 #endif /* _LINUX_WAIT_H */
diff --git a/include/linux/wait_api.h b/include/linux/wait_api.h
new file mode 100644
index 000000000000..4e930548935a
--- /dev/null
+++ b/include/linux/wait_api.h
@@ -0,0 +1 @@
+#include <linux/wait.h>
diff --git a/include/linux/watch_queue.h b/include/linux/watch_queue.h
index c994d1b2cdba..3b9a40ae8bdb 100644
--- a/include/linux/watch_queue.h
+++ b/include/linux/watch_queue.h
@@ -28,7 +28,8 @@ struct watch_type_filter {
 struct watch_filter {
 	union {
 		struct rcu_head	rcu;
-		unsigned long	type_filter[2];	/* Bitmask of accepted types */
+		/* Bitmask of accepted types */
+		DECLARE_BITMAP(type_filter, WATCH_TYPE__NR);
 	};
 	u32			nr_filters;	/* Number of filters */
 	struct watch_type_filter filters[];
diff --git a/include/linux/wmi.h b/include/linux/wmi.h
index 2cb3913c1f50..b88d7b58e61e 100644
--- a/include/linux/wmi.h
+++ b/include/linux/wmi.h
@@ -35,6 +35,7 @@ extern int set_required_buffer_size(struct wmi_device *wdev, u64 length);
 struct wmi_driver {
 	struct device_driver driver;
 	const struct wmi_device_id *id_table;
+	bool no_notify_data;
 
 	int (*probe)(struct wmi_device *wdev, const void *context);
 	void (*remove)(struct wmi_device *wdev);
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 74d3c1efd9bb..7fee9b6cfede 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -469,7 +469,8 @@ extern bool workqueue_congested(int cpu, struct workqueue_struct *wq);
 extern unsigned int work_busy(struct work_struct *work);
 extern __printf(1, 2) void set_worker_desc(const char *fmt, ...);
 extern void print_worker_info(const char *log_lvl, struct task_struct *task);
-extern void show_workqueue_state(void);
+extern void show_all_workqueues(void);
+extern void show_one_workqueue(struct workqueue_struct *wq);
 extern void wq_worker_comm(char *buf, size_t size, struct task_struct *task);
 
 /**
diff --git a/include/linux/workqueue_api.h b/include/linux/workqueue_api.h
new file mode 100644
index 000000000000..77debb5d2760
--- /dev/null
+++ b/include/linux/workqueue_api.h
@@ -0,0 +1 @@
+#include <linux/workqueue.h>
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index d1f65adf6a26..fec248ab1fec 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -11,7 +11,6 @@
 #include <linux/flex_proportions.h>
 #include <linux/backing-dev-defs.h>
 #include <linux/blk_types.h>
-#include <linux/blk-cgroup.h>
 
 struct bio;
 
@@ -69,6 +68,7 @@ struct writeback_control {
 	unsigned for_reclaim:1;		/* Invoked from the page allocator */
 	unsigned range_cyclic:1;	/* range_start is cyclic */
 	unsigned for_sync:1;		/* sync(2) WB_SYNC_ALL writeback */
+	unsigned unpinned_fscache_wb:1;	/* Cleared I_PINNING_FSCACHE_WB */
 
 	/*
 	 * When writeback IOs are bounced through async layers, only the
@@ -109,15 +109,12 @@ static inline int wbc_to_write_flags(struct writeback_control *wbc)
 	return flags;
 }
 
-static inline struct cgroup_subsys_state *
-wbc_blkcg_css(struct writeback_control *wbc)
-{
 #ifdef CONFIG_CGROUP_WRITEBACK
-	if (wbc->wb)
-		return wbc->wb->blkcg_css;
-#endif
-	return blkcg_root_css;
-}
+#define wbc_blkcg_css(wbc) \
+	((wbc)->wb ? (wbc)->wb->blkcg_css : blkcg_root_css)
+#else
+#define wbc_blkcg_css(wbc)		(blkcg_root_css)
+#endif /* CONFIG_CGROUP_WRITEBACK */
 
 /*
  * A wb_domain represents a domain that wb's (bdi_writeback's) belong to
@@ -393,7 +390,14 @@ void writeback_set_ratelimit(void);
 void tag_pages_for_writeback(struct address_space *mapping,
 			     pgoff_t start, pgoff_t end);
 
-void account_page_redirty(struct page *page);
+bool filemap_dirty_folio(struct address_space *mapping, struct folio *folio);
+void folio_account_redirty(struct folio *folio);
+static inline void account_page_redirty(struct page *page)
+{
+	folio_account_redirty(page_folio(page));
+}
+bool folio_redirty_for_writepage(struct writeback_control *, struct folio *);
+bool redirty_page_for_writepage(struct writeback_control *, struct page *);
 
 void sb_mark_inode_writeback(struct inode *inode);
 void sb_clear_inode_writeback(struct inode *inode);
diff --git a/include/linux/ww_mutex.h b/include/linux/ww_mutex.h
index 29db736af86d..bb763085479a 100644
--- a/include/linux/ww_mutex.h
+++ b/include/linux/ww_mutex.h
@@ -28,12 +28,10 @@
 #ifndef CONFIG_PREEMPT_RT
 #define WW_MUTEX_BASE			mutex
 #define ww_mutex_base_init(l,n,k)	__mutex_init(l,n,k)
-#define ww_mutex_base_trylock(l)	mutex_trylock(l)
 #define ww_mutex_base_is_locked(b)	mutex_is_locked((b))
 #else
 #define WW_MUTEX_BASE			rt_mutex
 #define ww_mutex_base_init(l,n,k)	__rt_mutex_init(l,n,k)
-#define ww_mutex_base_trylock(l)	rt_mutex_trylock(l)
 #define ww_mutex_base_is_locked(b)	rt_mutex_base_is_locked(&(b)->rtmutex)
 #endif
 
@@ -339,17 +337,8 @@ ww_mutex_lock_slow_interruptible(struct ww_mutex *lock,
 
 extern void ww_mutex_unlock(struct ww_mutex *lock);
 
-/**
- * ww_mutex_trylock - tries to acquire the w/w mutex without acquire context
- * @lock: mutex to lock
- *
- * Trylocks a mutex without acquire context, so no deadlock detection is
- * possible. Returns 1 if the mutex has been acquired successfully, 0 otherwise.
- */
-static inline int __must_check ww_mutex_trylock(struct ww_mutex *lock)
-{
-	return ww_mutex_base_trylock(&lock->base);
-}
+extern int __must_check ww_mutex_trylock(struct ww_mutex *lock,
+					 struct ww_acquire_ctx *ctx);
 
 /***
  * ww_mutex_destroy - mark a w/w mutex unusable
diff --git a/include/linux/wwan.h b/include/linux/wwan.h
index 9fac819f92e3..5ce2acf444fb 100644
--- a/include/linux/wwan.h
+++ b/include/linux/wwan.h
@@ -4,12 +4,9 @@
 #ifndef __WWAN_H
 #define __WWAN_H
 
-#include <linux/device.h>
-#include <linux/kernel.h>
 #include <linux/poll.h>
-#include <linux/skbuff.h>
-#include <linux/netlink.h>
 #include <linux/netdevice.h>
+#include <linux/types.h>
 
 /**
  * enum wwan_port_type - WWAN port types
@@ -37,6 +34,10 @@ enum wwan_port_type {
 	WWAN_PORT_UNKNOWN,
 };
 
+struct device;
+struct file;
+struct netlink_ext_ack;
+struct sk_buff;
 struct wwan_port;
 
 /** struct wwan_port_ops - The WWAN port operations
@@ -171,4 +172,15 @@ int wwan_register_ops(struct device *parent, const struct wwan_ops *ops,
 
 void wwan_unregister_ops(struct device *parent);
 
+#ifdef CONFIG_WWAN_DEBUGFS
+struct dentry *wwan_get_debugfs_dir(struct device *parent);
+void wwan_put_debugfs_dir(struct dentry *dir);
+#else
+static inline struct dentry *wwan_get_debugfs_dir(struct device *parent)
+{
+	return ERR_PTR(-ENODEV);
+}
+static inline void wwan_put_debugfs_dir(struct dentry *dir) {}
+#endif
+
 #endif /* __WWAN_H */
diff --git a/include/linux/xarray.h b/include/linux/xarray.h
index a91e3d90df8a..72feab5ea8d4 100644
--- a/include/linux/xarray.h
+++ b/include/linux/xarray.h
@@ -9,6 +9,7 @@
  * See Documentation/core-api/xarray.rst for how to use the XArray.
  */
 
+#include <linux/bitmap.h>
 #include <linux/bug.h>
 #include <linux/compiler.h>
 #include <linux/gfp.h>
@@ -1317,6 +1318,7 @@ struct xa_state {
 	struct xa_node *xa_node;
 	struct xa_node *xa_alloc;
 	xa_update_node_t xa_update;
+	struct list_lru *xa_lru;
 };
 
 /*
@@ -1336,7 +1338,8 @@ struct xa_state {
 	.xa_pad = 0,					\
 	.xa_node = XAS_RESTART,				\
 	.xa_alloc = NULL,				\
-	.xa_update = NULL				\
+	.xa_update = NULL,				\
+	.xa_lru = NULL,					\
 }
 
 /**
@@ -1581,6 +1584,24 @@ static inline void xas_set(struct xa_state *xas, unsigned long index)
 }
 
 /**
+ * xas_advance() - Skip over sibling entries.
+ * @xas: XArray operation state.
+ * @index: Index of last sibling entry.
+ *
+ * Move the operation state to refer to the last sibling entry.
+ * This is useful for loops that normally want to see sibling
+ * entries but sometimes want to skip them.  Use xas_set() if you
+ * want to move to an index which is not part of this entry.
+ */
+static inline void xas_advance(struct xa_state *xas, unsigned long index)
+{
+	unsigned char shift = xas_is_node(xas) ? xas->xa_node->shift : 0;
+
+	xas->xa_index = index;
+	xas->xa_offset = (index >> shift) & XA_CHUNK_MASK;
+}
+
+/**
  * xas_set_order() - Set up XArray operation state for a multislot entry.
  * @xas: XArray operation state.
  * @index: Target of the operation.
@@ -1613,6 +1634,11 @@ static inline void xas_set_update(struct xa_state *xas, xa_update_node_t update)
 	xas->xa_update = update;
 }
 
+static inline void xas_set_lru(struct xa_state *xas, struct list_lru *lru)
+{
+	xas->xa_lru = lru;
+}
+
 /**
  * xas_next_entry() - Advance iterator to next present entry.
  * @xas: XArray operation state.
diff --git a/include/linux/xz.h b/include/linux/xz.h
index 9884c8440188..7285ca5d56e9 100644
--- a/include/linux/xz.h
+++ b/include/linux/xz.h
@@ -234,6 +234,112 @@ XZ_EXTERN void xz_dec_reset(struct xz_dec *s);
 XZ_EXTERN void xz_dec_end(struct xz_dec *s);
 
 /*
+ * Decompressor for MicroLZMA, an LZMA variant with a very minimal header.
+ * See xz_dec_microlzma_alloc() below for details.
+ *
+ * These functions aren't used or available in preboot code and thus aren't
+ * marked with XZ_EXTERN. This avoids warnings about static functions that
+ * are never defined.
+ */
+/**
+ * struct xz_dec_microlzma - Opaque type to hold the MicroLZMA decoder state
+ */
+struct xz_dec_microlzma;
+
+/**
+ * xz_dec_microlzma_alloc() - Allocate memory for the MicroLZMA decoder
+ * @mode        XZ_SINGLE or XZ_PREALLOC
+ * @dict_size   LZMA dictionary size. This must be at least 4 KiB and
+ *              at most 3 GiB.
+ *
+ * In contrast to xz_dec_init(), this function only allocates the memory
+ * and remembers the dictionary size. xz_dec_microlzma_reset() must be used
+ * before calling xz_dec_microlzma_run().
+ *
+ * The amount of allocated memory is a little less than 30 KiB with XZ_SINGLE.
+ * With XZ_PREALLOC also a dictionary buffer of dict_size bytes is allocated.
+ *
+ * On success, xz_dec_microlzma_alloc() returns a pointer to
+ * struct xz_dec_microlzma. If memory allocation fails or
+ * dict_size is invalid, NULL is returned.
+ *
+ * The compressed format supported by this decoder is a raw LZMA stream
+ * whose first byte (always 0x00) has been replaced with bitwise-negation
+ * of the LZMA properties (lc/lp/pb) byte. For example, if lc/lp/pb is
+ * 3/0/2, the first byte is 0xA2. This way the first byte can never be 0x00.
+ * Just like with LZMA2, lc + lp <= 4 must be true. The LZMA end-of-stream
+ * marker must not be used. The unused values are reserved for future use.
+ * This MicroLZMA header format was created for use in EROFS but may be used
+ * by others too.
+ */
+extern struct xz_dec_microlzma *xz_dec_microlzma_alloc(enum xz_mode mode,
+						       uint32_t dict_size);
+
+/**
+ * xz_dec_microlzma_reset() - Reset the MicroLZMA decoder state
+ * @s           Decoder state allocated using xz_dec_microlzma_alloc()
+ * @comp_size   Compressed size of the input stream
+ * @uncomp_size Uncompressed size of the input stream. A value smaller
+ *              than the real uncompressed size of the input stream can
+ *              be specified if uncomp_size_is_exact is set to false.
+ *              uncomp_size can never be set to a value larger than the
+ *              expected real uncompressed size because it would eventually
+ *              result in XZ_DATA_ERROR.
+ * @uncomp_size_is_exact  This is an int instead of bool to avoid
+ *              requiring stdbool.h. This should normally be set to true.
+ *              When this is set to false, error detection is weaker.
+ */
+extern void xz_dec_microlzma_reset(struct xz_dec_microlzma *s,
+				   uint32_t comp_size, uint32_t uncomp_size,
+				   int uncomp_size_is_exact);
+
+/**
+ * xz_dec_microlzma_run() - Run the MicroLZMA decoder
+ * @s           Decoder state initialized using xz_dec_microlzma_reset()
+ * @b:          Input and output buffers
+ *
+ * This works similarly to xz_dec_run() with a few important differences.
+ * Only the differences are documented here.
+ *
+ * The only possible return values are XZ_OK, XZ_STREAM_END, and
+ * XZ_DATA_ERROR. This function cannot return XZ_BUF_ERROR: if no progress
+ * is possible due to lack of input data or output space, this function will
+ * keep returning XZ_OK. Thus, the calling code must be written so that it
+ * will eventually provide input and output space matching (or exceeding)
+ * comp_size and uncomp_size arguments given to xz_dec_microlzma_reset().
+ * If the caller cannot do this (for example, if the input file is truncated
+ * or otherwise corrupt), the caller must detect this error by itself to
+ * avoid an infinite loop.
+ *
+ * If the compressed data seems to be corrupt, XZ_DATA_ERROR is returned.
+ * This can happen also when incorrect dictionary, uncompressed, or
+ * compressed sizes have been specified.
+ *
+ * With XZ_PREALLOC only: As an extra feature, b->out may be NULL to skip over
+ * uncompressed data. This way the caller doesn't need to provide a temporary
+ * output buffer for the bytes that will be ignored.
+ *
+ * With XZ_SINGLE only: In contrast to xz_dec_run(), the return value XZ_OK
+ * is also possible and thus XZ_SINGLE is actually a limited multi-call mode.
+ * After XZ_OK the bytes decoded so far may be read from the output buffer.
+ * It is possible to continue decoding but the variables b->out and b->out_pos
+ * MUST NOT be changed by the caller. Increasing the value of b->out_size is
+ * allowed to make more output space available; one doesn't need to provide
+ * space for the whole uncompressed data on the first call. The input buffer
+ * may be changed normally like with XZ_PREALLOC. This way input data can be
+ * provided from non-contiguous memory.
+ */
+extern enum xz_ret xz_dec_microlzma_run(struct xz_dec_microlzma *s,
+					struct xz_buf *b);
+
+/**
+ * xz_dec_microlzma_end() - Free the memory allocated for the decoder state
+ * @s:          Decoder state allocated using xz_dec_microlzma_alloc().
+ *              If s is NULL, this function does nothing.
+ */
+extern void xz_dec_microlzma_end(struct xz_dec_microlzma *s);
+
+/*
  * Standalone build (userspace build or in-kernel build for boot time use)
  * needs a CRC32 implementation. For normal in-kernel use, kernel's own
  * CRC32 module is used instead, and users of this module don't need to
diff --git a/include/linux/zstd.h b/include/linux/zstd.h
index e87f78c9b19c..113408eef6ec 100644
--- a/include/linux/zstd.h
+++ b/include/linux/zstd.h
@@ -1,138 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */
 /*
- * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
+ * Copyright (c) Yann Collet, Facebook, Inc.
  * All rights reserved.
  *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of https://github.com/facebook/zstd.
- * An additional grant of patent rights can be found in the PATENTS file in the
- * same directory.
- *
- * This program is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License version 2 as published by the
- * Free Software Foundation. This program is dual-licensed; you may select
- * either version 2 of the GNU General Public License ("GPL") or BSD license
- * ("BSD").
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of https://github.com/facebook/zstd) and
+ * the GPLv2 (found in the COPYING file in the root directory of
+ * https://github.com/facebook/zstd). You may select, at your option, one of the
+ * above-listed licenses.
  */
 
-#ifndef ZSTD_H
-#define ZSTD_H
+#ifndef LINUX_ZSTD_H
+#define LINUX_ZSTD_H
 
-/* ======   Dependency   ======*/
-#include <linux/types.h>   /* size_t */
+/**
+ * This is a kernel-style API that wraps the upstream zstd API, which cannot be
+ * used directly because the symbols aren't exported. It exposes the minimal
+ * functionality which is currently required by users of zstd in the kernel.
+ * Expose extra functions from lib/zstd/zstd.h as needed.
+ */
 
+/* ======   Dependency   ====== */
+#include <linux/types.h>
+#include <linux/zstd_errors.h>
+#include <linux/zstd_lib.h>
 
-/*-*****************************************************************************
- * Introduction
+/* ======   Helper Functions   ====== */
+/**
+ * zstd_compress_bound() - maximum compressed size in worst case scenario
+ * @src_size: The size of the data to compress.
  *
- * zstd, short for Zstandard, is a fast lossless compression algorithm,
- * targeting real-time compression scenarios at zlib-level and better
- * compression ratios. The zstd compression library provides in-memory
- * compression and decompression functions. The library supports compression
- * levels from 1 up to ZSTD_maxCLevel() which is 22. Levels >= 20, labeled
- * ultra, should be used with caution, as they require more memory.
- * Compression can be done in:
- *  - a single step, reusing a context (described as Explicit memory management)
- *  - unbounded multiple steps (described as Streaming compression)
- * The compression ratio achievable on small data can be highly improved using
- * compression with a dictionary in:
- *  - a single step (described as Simple dictionary API)
- *  - a single step, reusing a dictionary (described as Fast dictionary API)
- ******************************************************************************/
-
-/*======  Helper functions  ======*/
+ * Return:    The maximum compressed size in the worst case scenario.
+ */
+size_t zstd_compress_bound(size_t src_size);
 
 /**
- * enum ZSTD_ErrorCode - zstd error codes
+ * zstd_is_error() - tells if a size_t function result is an error code
+ * @code:  The function result to check for error.
  *
- * Functions that return size_t can be checked for errors using ZSTD_isError()
- * and the ZSTD_ErrorCode can be extracted using ZSTD_getErrorCode().
+ * Return: Non-zero iff the code is an error.
+ */
+unsigned int zstd_is_error(size_t code);
+
+/**
+ * enum zstd_error_code - zstd error codes
  */
-typedef enum {
-	ZSTD_error_no_error,
-	ZSTD_error_GENERIC,
-	ZSTD_error_prefix_unknown,
-	ZSTD_error_version_unsupported,
-	ZSTD_error_parameter_unknown,
-	ZSTD_error_frameParameter_unsupported,
-	ZSTD_error_frameParameter_unsupportedBy32bits,
-	ZSTD_error_frameParameter_windowTooLarge,
-	ZSTD_error_compressionParameter_unsupported,
-	ZSTD_error_init_missing,
-	ZSTD_error_memory_allocation,
-	ZSTD_error_stage_wrong,
-	ZSTD_error_dstSize_tooSmall,
-	ZSTD_error_srcSize_wrong,
-	ZSTD_error_corruption_detected,
-	ZSTD_error_checksum_wrong,
-	ZSTD_error_tableLog_tooLarge,
-	ZSTD_error_maxSymbolValue_tooLarge,
-	ZSTD_error_maxSymbolValue_tooSmall,
-	ZSTD_error_dictionary_corrupted,
-	ZSTD_error_dictionary_wrong,
-	ZSTD_error_dictionaryCreation_failed,
-	ZSTD_error_maxCode
-} ZSTD_ErrorCode;
+typedef ZSTD_ErrorCode zstd_error_code;
 
 /**
- * ZSTD_maxCLevel() - maximum compression level available
+ * zstd_get_error_code() - translates an error function result to an error code
+ * @code:  The function result for which zstd_is_error(code) is true.
  *
- * Return: Maximum compression level available.
+ * Return: A unique error code for this error.
  */
-int ZSTD_maxCLevel(void);
+zstd_error_code zstd_get_error_code(size_t code);
+
 /**
- * ZSTD_compressBound() - maximum compressed size in worst case scenario
- * @srcSize: The size of the data to compress.
+ * zstd_get_error_name() - translates an error function result to a string
+ * @code:  The function result for which zstd_is_error(code) is true.
  *
- * Return:   The maximum compressed size in the worst case scenario.
+ * Return: An error string corresponding to the error code.
  */
-size_t ZSTD_compressBound(size_t srcSize);
+const char *zstd_get_error_name(size_t code);
+
 /**
- * ZSTD_isError() - tells if a size_t function result is an error code
- * @code:  The function result to check for error.
+ * zstd_min_clevel() - minimum allowed compression level
  *
- * Return: Non-zero iff the code is an error.
+ * Return: The minimum allowed compression level.
  */
-static __attribute__((unused)) unsigned int ZSTD_isError(size_t code)
-{
-	return code > (size_t)-ZSTD_error_maxCode;
-}
+int zstd_min_clevel(void);
+
 /**
- * ZSTD_getErrorCode() - translates an error function result to a ZSTD_ErrorCode
- * @functionResult: The result of a function for which ZSTD_isError() is true.
+ * zstd_max_clevel() - maximum allowed compression level
  *
- * Return:          The ZSTD_ErrorCode corresponding to the functionResult or 0
- *                  if the functionResult isn't an error.
+ * Return: The maximum allowed compression level.
  */
-static __attribute__((unused)) ZSTD_ErrorCode ZSTD_getErrorCode(
-	size_t functionResult)
-{
-	if (!ZSTD_isError(functionResult))
-		return (ZSTD_ErrorCode)0;
-	return (ZSTD_ErrorCode)(0 - functionResult);
-}
+int zstd_max_clevel(void);
+
+/* ======   Parameter Selection   ====== */
 
 /**
- * enum ZSTD_strategy - zstd compression search strategy
+ * enum zstd_strategy - zstd compression search strategy
  *
- * From faster to stronger.
+ * From faster to stronger. See zstd_lib.h.
  */
-typedef enum {
-	ZSTD_fast,
-	ZSTD_dfast,
-	ZSTD_greedy,
-	ZSTD_lazy,
-	ZSTD_lazy2,
-	ZSTD_btlazy2,
-	ZSTD_btopt,
-	ZSTD_btopt2
-} ZSTD_strategy;
+typedef ZSTD_strategy zstd_strategy;
 
 /**
- * struct ZSTD_compressionParameters - zstd compression parameters
+ * struct zstd_compression_parameters - zstd compression parameters
  * @windowLog:    Log of the largest match distance. Larger means more
  *                compression, and more memory needed during decompression.
- * @chainLog:     Fully searched segment. Larger means more compression, slower,
- *                and more memory (useless for fast).
+ * @chainLog:     Fully searched segment. Larger means more compression,
+ *                slower, and more memory (useless for fast).
  * @hashLog:      Dispatch table. Larger means more compression,
  *                slower, and more memory.
  * @searchLog:    Number of searches. Larger means more compression and slower.
@@ -141,1017 +100,348 @@ typedef enum {
  * @targetLength: Acceptable match size for optimal parser (only). Larger means
  *                more compression, and slower.
  * @strategy:     The zstd compression strategy.
+ *
+ * See zstd_lib.h.
  */
-typedef struct {
-	unsigned int windowLog;
-	unsigned int chainLog;
-	unsigned int hashLog;
-	unsigned int searchLog;
-	unsigned int searchLength;
-	unsigned int targetLength;
-	ZSTD_strategy strategy;
-} ZSTD_compressionParameters;
+typedef ZSTD_compressionParameters zstd_compression_parameters;
 
 /**
- * struct ZSTD_frameParameters - zstd frame parameters
- * @contentSizeFlag: Controls whether content size will be present in the frame
- *                   header (when known).
- * @checksumFlag:    Controls whether a 32-bit checksum is generated at the end
- *                   of the frame for error detection.
- * @noDictIDFlag:    Controls whether dictID will be saved into the frame header
- *                   when using dictionary compression.
+ * struct zstd_frame_parameters - zstd frame parameters
+ * @contentSizeFlag: Controls whether content size will be present in the
+ *                   frame header (when known).
+ * @checksumFlag:    Controls whether a 32-bit checksum is generated at the
+ *                   end of the frame for error detection.
+ * @noDictIDFlag:    Controls whether dictID will be saved into the frame
+ *                   header when using dictionary compression.
  *
- * The default value is all fields set to 0.
+ * The default value is all fields set to 0. See zstd_lib.h.
  */
-typedef struct {
-	unsigned int contentSizeFlag;
-	unsigned int checksumFlag;
-	unsigned int noDictIDFlag;
-} ZSTD_frameParameters;
+typedef ZSTD_frameParameters zstd_frame_parameters;
 
 /**
- * struct ZSTD_parameters - zstd parameters
+ * struct zstd_parameters - zstd parameters
  * @cParams: The compression parameters.
  * @fParams: The frame parameters.
  */
-typedef struct {
-	ZSTD_compressionParameters cParams;
-	ZSTD_frameParameters fParams;
-} ZSTD_parameters;
+typedef ZSTD_parameters zstd_parameters;
 
 /**
- * ZSTD_getCParams() - returns ZSTD_compressionParameters for selected level
- * @compressionLevel: The compression level from 1 to ZSTD_maxCLevel().
- * @estimatedSrcSize: The estimated source size to compress or 0 if unknown.
- * @dictSize:         The dictionary size or 0 if a dictionary isn't being used.
+ * zstd_get_params() - returns zstd_parameters for selected level
+ * @level:              The compression level
+ * @estimated_src_size: The estimated source size to compress or 0
+ *                      if unknown.
  *
- * Return:            The selected ZSTD_compressionParameters.
+ * Return:              The selected zstd_parameters.
  */
-ZSTD_compressionParameters ZSTD_getCParams(int compressionLevel,
-	unsigned long long estimatedSrcSize, size_t dictSize);
+zstd_parameters zstd_get_params(int level,
+	unsigned long long estimated_src_size);
 
-/**
- * ZSTD_getParams() - returns ZSTD_parameters for selected level
- * @compressionLevel: The compression level from 1 to ZSTD_maxCLevel().
- * @estimatedSrcSize: The estimated source size to compress or 0 if unknown.
- * @dictSize:         The dictionary size or 0 if a dictionary isn't being used.
- *
- * The same as ZSTD_getCParams() except also selects the default frame
- * parameters (all zero).
- *
- * Return:            The selected ZSTD_parameters.
- */
-ZSTD_parameters ZSTD_getParams(int compressionLevel,
-	unsigned long long estimatedSrcSize, size_t dictSize);
+/* ======   Single-pass Compression   ====== */
 
-/*-*************************************
- * Explicit memory management
- **************************************/
+typedef ZSTD_CCtx zstd_cctx;
 
 /**
- * ZSTD_CCtxWorkspaceBound() - amount of memory needed to initialize a ZSTD_CCtx
- * @cParams: The compression parameters to be used for compression.
+ * zstd_cctx_workspace_bound() - max memory needed to initialize a zstd_cctx
+ * @parameters: The compression parameters to be used.
  *
  * If multiple compression parameters might be used, the caller must call
- * ZSTD_CCtxWorkspaceBound() for each set of parameters and use the maximum
+ * zstd_cctx_workspace_bound() for each set of parameters and use the maximum
  * size.
  *
- * Return:   A lower bound on the size of the workspace that is passed to
- *           ZSTD_initCCtx().
+ * Return:      A lower bound on the size of the workspace that is passed to
+ *              zstd_init_cctx().
  */
-size_t ZSTD_CCtxWorkspaceBound(ZSTD_compressionParameters cParams);
+size_t zstd_cctx_workspace_bound(const zstd_compression_parameters *parameters);
 
 /**
- * struct ZSTD_CCtx - the zstd compression context
- *
- * When compressing many times it is recommended to allocate a context just once
- * and reuse it for each successive compression operation.
- */
-typedef struct ZSTD_CCtx_s ZSTD_CCtx;
-/**
- * ZSTD_initCCtx() - initialize a zstd compression context
- * @workspace:     The workspace to emplace the context into. It must outlive
- *                 the returned context.
- * @workspaceSize: The size of workspace. Use ZSTD_CCtxWorkspaceBound() to
- *                 determine how large the workspace must be.
- *
- * Return:         A compression context emplaced into workspace.
- */
-ZSTD_CCtx *ZSTD_initCCtx(void *workspace, size_t workspaceSize);
-
-/**
- * ZSTD_compressCCtx() - compress src into dst
- * @ctx:         The context. Must have been initialized with a workspace at
- *               least as large as ZSTD_CCtxWorkspaceBound(params.cParams).
- * @dst:         The buffer to compress src into.
- * @dstCapacity: The size of the destination buffer. May be any size, but
- *               ZSTD_compressBound(srcSize) is guaranteed to be large enough.
- * @src:         The data to compress.
- * @srcSize:     The size of the data to compress.
- * @params:      The parameters to use for compression. See ZSTD_getParams().
- *
- * Return:       The compressed size or an error, which can be checked using
- *               ZSTD_isError().
- */
-size_t ZSTD_compressCCtx(ZSTD_CCtx *ctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize, ZSTD_parameters params);
-
-/**
- * ZSTD_DCtxWorkspaceBound() - amount of memory needed to initialize a ZSTD_DCtx
- *
- * Return: A lower bound on the size of the workspace that is passed to
- *         ZSTD_initDCtx().
- */
-size_t ZSTD_DCtxWorkspaceBound(void);
-
-/**
- * struct ZSTD_DCtx - the zstd decompression context
- *
- * When decompressing many times it is recommended to allocate a context just
- * once and reuse it for each successive decompression operation.
- */
-typedef struct ZSTD_DCtx_s ZSTD_DCtx;
-/**
- * ZSTD_initDCtx() - initialize a zstd decompression context
- * @workspace:     The workspace to emplace the context into. It must outlive
- *                 the returned context.
- * @workspaceSize: The size of workspace. Use ZSTD_DCtxWorkspaceBound() to
- *                 determine how large the workspace must be.
- *
- * Return:         A decompression context emplaced into workspace.
- */
-ZSTD_DCtx *ZSTD_initDCtx(void *workspace, size_t workspaceSize);
-
-/**
- * ZSTD_decompressDCtx() - decompress zstd compressed src into dst
- * @ctx:         The decompression context.
- * @dst:         The buffer to decompress src into.
- * @dstCapacity: The size of the destination buffer. Must be at least as large
- *               as the decompressed size. If the caller cannot upper bound the
- *               decompressed size, then it's better to use the streaming API.
- * @src:         The zstd compressed data to decompress. Multiple concatenated
- *               frames and skippable frames are allowed.
- * @srcSize:     The exact size of the data to decompress.
- *
- * Return:       The decompressed size or an error, which can be checked using
- *               ZSTD_isError().
- */
-size_t ZSTD_decompressDCtx(ZSTD_DCtx *ctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize);
-
-/*-************************
- * Simple dictionary API
- **************************/
-
-/**
- * ZSTD_compress_usingDict() - compress src into dst using a dictionary
- * @ctx:         The context. Must have been initialized with a workspace at
- *               least as large as ZSTD_CCtxWorkspaceBound(params.cParams).
- * @dst:         The buffer to compress src into.
- * @dstCapacity: The size of the destination buffer. May be any size, but
- *               ZSTD_compressBound(srcSize) is guaranteed to be large enough.
- * @src:         The data to compress.
- * @srcSize:     The size of the data to compress.
- * @dict:        The dictionary to use for compression.
- * @dictSize:    The size of the dictionary.
- * @params:      The parameters to use for compression. See ZSTD_getParams().
- *
- * Compression using a predefined dictionary. The same dictionary must be used
- * during decompression.
- *
- * Return:       The compressed size or an error, which can be checked using
- *               ZSTD_isError().
- */
-size_t ZSTD_compress_usingDict(ZSTD_CCtx *ctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize, const void *dict, size_t dictSize,
-	ZSTD_parameters params);
-
-/**
- * ZSTD_decompress_usingDict() - decompress src into dst using a dictionary
- * @ctx:         The decompression context.
- * @dst:         The buffer to decompress src into.
- * @dstCapacity: The size of the destination buffer. Must be at least as large
- *               as the decompressed size. If the caller cannot upper bound the
- *               decompressed size, then it's better to use the streaming API.
- * @src:         The zstd compressed data to decompress. Multiple concatenated
- *               frames and skippable frames are allowed.
- * @srcSize:     The exact size of the data to decompress.
- * @dict:        The dictionary to use for decompression. The same dictionary
- *               must've been used to compress the data.
- * @dictSize:    The size of the dictionary.
- *
- * Return:       The decompressed size or an error, which can be checked using
- *               ZSTD_isError().
- */
-size_t ZSTD_decompress_usingDict(ZSTD_DCtx *ctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize, const void *dict, size_t dictSize);
-
-/*-**************************
- * Fast dictionary API
- ***************************/
-
-/**
- * ZSTD_CDictWorkspaceBound() - memory needed to initialize a ZSTD_CDict
- * @cParams: The compression parameters to be used for compression.
+ * zstd_init_cctx() - initialize a zstd compression context
+ * @workspace:      The workspace to emplace the context into. It must outlive
+ *                  the returned context.
+ * @workspace_size: The size of workspace. Use zstd_cctx_workspace_bound() to
+ *                  determine how large the workspace must be.
  *
- * Return:   A lower bound on the size of the workspace that is passed to
- *           ZSTD_initCDict().
- */
-size_t ZSTD_CDictWorkspaceBound(ZSTD_compressionParameters cParams);
-
-/**
- * struct ZSTD_CDict - a digested dictionary to be used for compression
+ * Return:          A zstd compression context or NULL on error.
  */
-typedef struct ZSTD_CDict_s ZSTD_CDict;
+zstd_cctx *zstd_init_cctx(void *workspace, size_t workspace_size);
 
 /**
- * ZSTD_initCDict() - initialize a digested dictionary for compression
- * @dictBuffer:    The dictionary to digest. The buffer is referenced by the
- *                 ZSTD_CDict so it must outlive the returned ZSTD_CDict.
- * @dictSize:      The size of the dictionary.
- * @params:        The parameters to use for compression. See ZSTD_getParams().
- * @workspace:     The workspace. It must outlive the returned ZSTD_CDict.
- * @workspaceSize: The workspace size. Must be at least
- *                 ZSTD_CDictWorkspaceBound(params.cParams).
+ * zstd_compress_cctx() - compress src into dst with the initialized parameters
+ * @cctx:         The context. Must have been initialized with zstd_init_cctx().
+ * @dst:          The buffer to compress src into.
+ * @dst_capacity: The size of the destination buffer. May be any size, but
+ *                ZSTD_compressBound(srcSize) is guaranteed to be large enough.
+ * @src:          The data to compress.
+ * @src_size:     The size of the data to compress.
+ * @parameters:   The compression parameters to be used.
  *
- * When compressing multiple messages / blocks with the same dictionary it is
- * recommended to load it just once. The ZSTD_CDict merely references the
- * dictBuffer, so it must outlive the returned ZSTD_CDict.
- *
- * Return:         The digested dictionary emplaced into workspace.
+ * Return:        The compressed size or an error, which can be checked using
+ *                zstd_is_error().
  */
-ZSTD_CDict *ZSTD_initCDict(const void *dictBuffer, size_t dictSize,
-	ZSTD_parameters params, void *workspace, size_t workspaceSize);
+size_t zstd_compress_cctx(zstd_cctx *cctx, void *dst, size_t dst_capacity,
+	const void *src, size_t src_size, const zstd_parameters *parameters);
 
-/**
- * ZSTD_compress_usingCDict() - compress src into dst using a ZSTD_CDict
- * @ctx:         The context. Must have been initialized with a workspace at
- *               least as large as ZSTD_CCtxWorkspaceBound(cParams) where
- *               cParams are the compression parameters used to initialize the
- *               cdict.
- * @dst:         The buffer to compress src into.
- * @dstCapacity: The size of the destination buffer. May be any size, but
- *               ZSTD_compressBound(srcSize) is guaranteed to be large enough.
- * @src:         The data to compress.
- * @srcSize:     The size of the data to compress.
- * @cdict:       The digested dictionary to use for compression.
- * @params:      The parameters to use for compression. See ZSTD_getParams().
- *
- * Compression using a digested dictionary. The same dictionary must be used
- * during decompression.
- *
- * Return:       The compressed size or an error, which can be checked using
- *               ZSTD_isError().
- */
-size_t ZSTD_compress_usingCDict(ZSTD_CCtx *cctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize, const ZSTD_CDict *cdict);
+/* ======   Single-pass Decompression   ====== */
 
+typedef ZSTD_DCtx zstd_dctx;
 
 /**
- * ZSTD_DDictWorkspaceBound() - memory needed to initialize a ZSTD_DDict
+ * zstd_dctx_workspace_bound() - max memory needed to initialize a zstd_dctx
  *
- * Return:  A lower bound on the size of the workspace that is passed to
- *          ZSTD_initDDict().
- */
-size_t ZSTD_DDictWorkspaceBound(void);
-
-/**
- * struct ZSTD_DDict - a digested dictionary to be used for decompression
+ * Return: A lower bound on the size of the workspace that is passed to
+ *         zstd_init_dctx().
  */
-typedef struct ZSTD_DDict_s ZSTD_DDict;
+size_t zstd_dctx_workspace_bound(void);
 
 /**
- * ZSTD_initDDict() - initialize a digested dictionary for decompression
- * @dictBuffer:    The dictionary to digest. The buffer is referenced by the
- *                 ZSTD_DDict so it must outlive the returned ZSTD_DDict.
- * @dictSize:      The size of the dictionary.
- * @workspace:     The workspace. It must outlive the returned ZSTD_DDict.
- * @workspaceSize: The workspace size. Must be at least
- *                 ZSTD_DDictWorkspaceBound().
- *
- * When decompressing multiple messages / blocks with the same dictionary it is
- * recommended to load it just once. The ZSTD_DDict merely references the
- * dictBuffer, so it must outlive the returned ZSTD_DDict.
+ * zstd_init_dctx() - initialize a zstd decompression context
+ * @workspace:      The workspace to emplace the context into. It must outlive
+ *                  the returned context.
+ * @workspace_size: The size of workspace. Use zstd_dctx_workspace_bound() to
+ *                  determine how large the workspace must be.
  *
- * Return:         The digested dictionary emplaced into workspace.
+ * Return:          A zstd decompression context or NULL on error.
  */
-ZSTD_DDict *ZSTD_initDDict(const void *dictBuffer, size_t dictSize,
-	void *workspace, size_t workspaceSize);
+zstd_dctx *zstd_init_dctx(void *workspace, size_t workspace_size);
 
 /**
- * ZSTD_decompress_usingDDict() - decompress src into dst using a ZSTD_DDict
- * @ctx:         The decompression context.
- * @dst:         The buffer to decompress src into.
- * @dstCapacity: The size of the destination buffer. Must be at least as large
- *               as the decompressed size. If the caller cannot upper bound the
- *               decompressed size, then it's better to use the streaming API.
- * @src:         The zstd compressed data to decompress. Multiple concatenated
- *               frames and skippable frames are allowed.
- * @srcSize:     The exact size of the data to decompress.
- * @ddict:       The digested dictionary to use for decompression. The same
- *               dictionary must've been used to compress the data.
+ * zstd_decompress_dctx() - decompress zstd compressed src into dst
+ * @dctx:         The decompression context.
+ * @dst:          The buffer to decompress src into.
+ * @dst_capacity: The size of the destination buffer. Must be at least as large
+ *                as the decompressed size. If the caller cannot upper bound the
+ *                decompressed size, then it's better to use the streaming API.
+ * @src:          The zstd compressed data to decompress. Multiple concatenated
+ *                frames and skippable frames are allowed.
+ * @src_size:     The exact size of the data to decompress.
  *
- * Return:       The decompressed size or an error, which can be checked using
- *               ZSTD_isError().
+ * Return:        The decompressed size or an error, which can be checked using
+ *                zstd_is_error().
  */
-size_t ZSTD_decompress_usingDDict(ZSTD_DCtx *dctx, void *dst,
-	size_t dstCapacity, const void *src, size_t srcSize,
-	const ZSTD_DDict *ddict);
+size_t zstd_decompress_dctx(zstd_dctx *dctx, void *dst, size_t dst_capacity,
+	const void *src, size_t src_size);
 
-
-/*-**************************
- * Streaming
- ***************************/
+/* ======   Streaming Buffers   ====== */
 
 /**
- * struct ZSTD_inBuffer - input buffer for streaming
+ * struct zstd_in_buffer - input buffer for streaming
  * @src:  Start of the input buffer.
  * @size: Size of the input buffer.
  * @pos:  Position where reading stopped. Will be updated.
  *        Necessarily 0 <= pos <= size.
+ *
+ * See zstd_lib.h.
  */
-typedef struct ZSTD_inBuffer_s {
-	const void *src;
-	size_t size;
-	size_t pos;
-} ZSTD_inBuffer;
+typedef ZSTD_inBuffer zstd_in_buffer;
 
 /**
- * struct ZSTD_outBuffer - output buffer for streaming
+ * struct zstd_out_buffer - output buffer for streaming
  * @dst:  Start of the output buffer.
  * @size: Size of the output buffer.
  * @pos:  Position where writing stopped. Will be updated.
  *        Necessarily 0 <= pos <= size.
+ *
+ * See zstd_lib.h.
  */
-typedef struct ZSTD_outBuffer_s {
-	void *dst;
-	size_t size;
-	size_t pos;
-} ZSTD_outBuffer;
+typedef ZSTD_outBuffer zstd_out_buffer;
 
+/* ======   Streaming Compression   ====== */
 
-
-/*-*****************************************************************************
- * Streaming compression - HowTo
- *
- * A ZSTD_CStream object is required to track streaming operation.
- * Use ZSTD_initCStream() to initialize a ZSTD_CStream object.
- * ZSTD_CStream objects can be reused multiple times on consecutive compression
- * operations. It is recommended to re-use ZSTD_CStream in situations where many
- * streaming operations will be achieved consecutively. Use one separate
- * ZSTD_CStream per thread for parallel execution.
- *
- * Use ZSTD_compressStream() repetitively to consume input stream.
- * The function will automatically update both `pos` fields.
- * Note that it may not consume the entire input, in which case `pos < size`,
- * and it's up to the caller to present again remaining data.
- * It returns a hint for the preferred number of bytes to use as an input for
- * the next function call.
- *
- * At any moment, it's possible to flush whatever data remains within internal
- * buffer, using ZSTD_flushStream(). `output->pos` will be updated. There might
- * still be some content left within the internal buffer if `output->size` is
- * too small. It returns the number of bytes left in the internal buffer and
- * must be called until it returns 0.
- *
- * ZSTD_endStream() instructs to finish a frame. It will perform a flush and
- * write frame epilogue. The epilogue is required for decoders to consider a
- * frame completed. Similar to ZSTD_flushStream(), it may not be able to flush
- * the full content if `output->size` is too small. In which case, call again
- * ZSTD_endStream() to complete the flush. It returns the number of bytes left
- * in the internal buffer and must be called until it returns 0.
- ******************************************************************************/
+typedef ZSTD_CStream zstd_cstream;
 
 /**
- * ZSTD_CStreamWorkspaceBound() - memory needed to initialize a ZSTD_CStream
- * @cParams: The compression parameters to be used for compression.
+ * zstd_cstream_workspace_bound() - memory needed to initialize a zstd_cstream
+ * @cparams: The compression parameters to be used for compression.
  *
  * Return:   A lower bound on the size of the workspace that is passed to
- *           ZSTD_initCStream() and ZSTD_initCStream_usingCDict().
- */
-size_t ZSTD_CStreamWorkspaceBound(ZSTD_compressionParameters cParams);
-
-/**
- * struct ZSTD_CStream - the zstd streaming compression context
- */
-typedef struct ZSTD_CStream_s ZSTD_CStream;
-
-/*===== ZSTD_CStream management functions =====*/
-/**
- * ZSTD_initCStream() - initialize a zstd streaming compression context
- * @params:         The zstd compression parameters.
- * @pledgedSrcSize: If params.fParams.contentSizeFlag == 1 then the caller must
- *                  pass the source size (zero means empty source). Otherwise,
- *                  the caller may optionally pass the source size, or zero if
- *                  unknown.
- * @workspace:      The workspace to emplace the context into. It must outlive
- *                  the returned context.
- * @workspaceSize:  The size of workspace.
- *                  Use ZSTD_CStreamWorkspaceBound(params.cParams) to determine
- *                  how large the workspace must be.
- *
- * Return:          The zstd streaming compression context.
+ *           zstd_init_cstream().
  */
-ZSTD_CStream *ZSTD_initCStream(ZSTD_parameters params,
-	unsigned long long pledgedSrcSize, void *workspace,
-	size_t workspaceSize);
+size_t zstd_cstream_workspace_bound(const zstd_compression_parameters *cparams);
 
 /**
- * ZSTD_initCStream_usingCDict() - initialize a streaming compression context
- * @cdict:          The digested dictionary to use for compression.
- * @pledgedSrcSize: Optionally the source size, or zero if unknown.
- * @workspace:      The workspace to emplace the context into. It must outlive
- *                  the returned context.
- * @workspaceSize:  The size of workspace. Call ZSTD_CStreamWorkspaceBound()
- *                  with the cParams used to initialize the cdict to determine
- *                  how large the workspace must be.
+ * zstd_init_cstream() - initialize a zstd streaming compression context
+ * @parameters        The zstd parameters to use for compression.
+ * @pledged_src_size: If params.fParams.contentSizeFlag == 1 then the caller
+ *                    must pass the source size (zero means empty source).
+ *                    Otherwise, the caller may optionally pass the source
+ *                    size, or zero if unknown.
+ * @workspace:        The workspace to emplace the context into. It must outlive
+ *                    the returned context.
+ * @workspace_size:   The size of workspace.
+ *                    Use zstd_cstream_workspace_bound(params->cparams) to
+ *                    determine how large the workspace must be.
  *
- * Return:          The zstd streaming compression context.
+ * Return:            The zstd streaming compression context or NULL on error.
  */
-ZSTD_CStream *ZSTD_initCStream_usingCDict(const ZSTD_CDict *cdict,
-	unsigned long long pledgedSrcSize, void *workspace,
-	size_t workspaceSize);
+zstd_cstream *zstd_init_cstream(const zstd_parameters *parameters,
+	unsigned long long pledged_src_size, void *workspace, size_t workspace_size);
 
-/*===== Streaming compression functions =====*/
 /**
- * ZSTD_resetCStream() - reset the context using parameters from creation
- * @zcs:            The zstd streaming compression context to reset.
- * @pledgedSrcSize: Optionally the source size, or zero if unknown.
+ * zstd_reset_cstream() - reset the context using parameters from creation
+ * @cstream:          The zstd streaming compression context to reset.
+ * @pledged_src_size: Optionally the source size, or zero if unknown.
  *
  * Resets the context using the parameters from creation. Skips dictionary
- * loading, since it can be reused. If `pledgedSrcSize` is non-zero the frame
+ * loading, since it can be reused. If `pledged_src_size` is non-zero the frame
  * content size is always written into the frame header.
  *
- * Return:          Zero or an error, which can be checked using ZSTD_isError().
+ * Return:            Zero or an error, which can be checked using
+ *                    zstd_is_error().
  */
-size_t ZSTD_resetCStream(ZSTD_CStream *zcs, unsigned long long pledgedSrcSize);
+size_t zstd_reset_cstream(zstd_cstream *cstream,
+	unsigned long long pledged_src_size);
+
 /**
- * ZSTD_compressStream() - streaming compress some of input into output
- * @zcs:    The zstd streaming compression context.
- * @output: Destination buffer. `output->pos` is updated to indicate how much
- *          compressed data was written.
- * @input:  Source buffer. `input->pos` is updated to indicate how much data was
- *          read. Note that it may not consume the entire input, in which case
- *          `input->pos < input->size`, and it's up to the caller to present
- *          remaining data again.
+ * zstd_compress_stream() - streaming compress some of input into output
+ * @cstream: The zstd streaming compression context.
+ * @output:  Destination buffer. `output->pos` is updated to indicate how much
+ *           compressed data was written.
+ * @input:   Source buffer. `input->pos` is updated to indicate how much data
+ *           was read. Note that it may not consume the entire input, in which
+ *           case `input->pos < input->size`, and it's up to the caller to
+ *           present remaining data again.
  *
  * The `input` and `output` buffers may be any size. Guaranteed to make some
  * forward progress if `input` and `output` are not empty.
  *
- * Return:  A hint for the number of bytes to use as the input for the next
- *          function call or an error, which can be checked using
- *          ZSTD_isError().
+ * Return:   A hint for the number of bytes to use as the input for the next
+ *           function call or an error, which can be checked using
+ *           zstd_is_error().
  */
-size_t ZSTD_compressStream(ZSTD_CStream *zcs, ZSTD_outBuffer *output,
-	ZSTD_inBuffer *input);
+size_t zstd_compress_stream(zstd_cstream *cstream, zstd_out_buffer *output,
+	zstd_in_buffer *input);
+
 /**
- * ZSTD_flushStream() - flush internal buffers into output
- * @zcs:    The zstd streaming compression context.
- * @output: Destination buffer. `output->pos` is updated to indicate how much
- *          compressed data was written.
+ * zstd_flush_stream() - flush internal buffers into output
+ * @cstream: The zstd streaming compression context.
+ * @output:  Destination buffer. `output->pos` is updated to indicate how much
+ *           compressed data was written.
  *
- * ZSTD_flushStream() must be called until it returns 0, meaning all the data
- * has been flushed. Since ZSTD_flushStream() causes a block to be ended,
+ * zstd_flush_stream() must be called until it returns 0, meaning all the data
+ * has been flushed. Since zstd_flush_stream() causes a block to be ended,
  * calling it too often will degrade the compression ratio.
  *
- * Return:  The number of bytes still present within internal buffers or an
- *          error, which can be checked using ZSTD_isError().
+ * Return:   The number of bytes still present within internal buffers or an
+ *           error, which can be checked using zstd_is_error().
  */
-size_t ZSTD_flushStream(ZSTD_CStream *zcs, ZSTD_outBuffer *output);
-/**
- * ZSTD_endStream() - flush internal buffers into output and end the frame
- * @zcs:    The zstd streaming compression context.
- * @output: Destination buffer. `output->pos` is updated to indicate how much
- *          compressed data was written.
- *
- * ZSTD_endStream() must be called until it returns 0, meaning all the data has
- * been flushed and the frame epilogue has been written.
- *
- * Return:  The number of bytes still present within internal buffers or an
- *          error, which can be checked using ZSTD_isError().
- */
-size_t ZSTD_endStream(ZSTD_CStream *zcs, ZSTD_outBuffer *output);
+size_t zstd_flush_stream(zstd_cstream *cstream, zstd_out_buffer *output);
 
 /**
- * ZSTD_CStreamInSize() - recommended size for the input buffer
- *
- * Return: The recommended size for the input buffer.
- */
-size_t ZSTD_CStreamInSize(void);
-/**
- * ZSTD_CStreamOutSize() - recommended size for the output buffer
+ * zstd_end_stream() - flush internal buffers into output and end the frame
+ * @cstream: The zstd streaming compression context.
+ * @output:  Destination buffer. `output->pos` is updated to indicate how much
+ *           compressed data was written.
  *
- * When the output buffer is at least this large, it is guaranteed to be large
- * enough to flush at least one complete compressed block.
+ * zstd_end_stream() must be called until it returns 0, meaning all the data has
+ * been flushed and the frame epilogue has been written.
  *
- * Return: The recommended size for the output buffer.
+ * Return:   The number of bytes still present within internal buffers or an
+ *           error, which can be checked using zstd_is_error().
  */
-size_t ZSTD_CStreamOutSize(void);
+size_t zstd_end_stream(zstd_cstream *cstream, zstd_out_buffer *output);
 
+/* ======   Streaming Decompression   ====== */
 
-
-/*-*****************************************************************************
- * Streaming decompression - HowTo
- *
- * A ZSTD_DStream object is required to track streaming operations.
- * Use ZSTD_initDStream() to initialize a ZSTD_DStream object.
- * ZSTD_DStream objects can be re-used multiple times.
- *
- * Use ZSTD_decompressStream() repetitively to consume your input.
- * The function will update both `pos` fields.
- * If `input->pos < input->size`, some input has not been consumed.
- * It's up to the caller to present again remaining data.
- * If `output->pos < output->size`, decoder has flushed everything it could.
- * Returns 0 iff a frame is completely decoded and fully flushed.
- * Otherwise it returns a suggested next input size that will never load more
- * than the current frame.
- ******************************************************************************/
+typedef ZSTD_DStream zstd_dstream;
 
 /**
- * ZSTD_DStreamWorkspaceBound() - memory needed to initialize a ZSTD_DStream
- * @maxWindowSize: The maximum window size allowed for compressed frames.
+ * zstd_dstream_workspace_bound() - memory needed to initialize a zstd_dstream
+ * @max_window_size: The maximum window size allowed for compressed frames.
  *
- * Return:         A lower bound on the size of the workspace that is passed to
- *                 ZSTD_initDStream() and ZSTD_initDStream_usingDDict().
+ * Return:           A lower bound on the size of the workspace that is passed
+ *                   to zstd_init_dstream().
  */
-size_t ZSTD_DStreamWorkspaceBound(size_t maxWindowSize);
+size_t zstd_dstream_workspace_bound(size_t max_window_size);
 
 /**
- * struct ZSTD_DStream - the zstd streaming decompression context
- */
-typedef struct ZSTD_DStream_s ZSTD_DStream;
-/*===== ZSTD_DStream management functions =====*/
-/**
- * ZSTD_initDStream() - initialize a zstd streaming decompression context
- * @maxWindowSize: The maximum window size allowed for compressed frames.
- * @workspace:     The workspace to emplace the context into. It must outlive
- *                 the returned context.
- * @workspaceSize: The size of workspace.
- *                 Use ZSTD_DStreamWorkspaceBound(maxWindowSize) to determine
- *                 how large the workspace must be.
- *
- * Return:         The zstd streaming decompression context.
- */
-ZSTD_DStream *ZSTD_initDStream(size_t maxWindowSize, void *workspace,
-	size_t workspaceSize);
-/**
- * ZSTD_initDStream_usingDDict() - initialize streaming decompression context
- * @maxWindowSize: The maximum window size allowed for compressed frames.
- * @ddict:         The digested dictionary to use for decompression.
- * @workspace:     The workspace to emplace the context into. It must outlive
- *                 the returned context.
- * @workspaceSize: The size of workspace.
- *                 Use ZSTD_DStreamWorkspaceBound(maxWindowSize) to determine
- *                 how large the workspace must be.
+ * zstd_init_dstream() - initialize a zstd streaming decompression context
+ * @max_window_size: The maximum window size allowed for compressed frames.
+ * @workspace:       The workspace to emplace the context into. It must outlive
+ *                   the returned context.
+ * @workspaceSize:   The size of workspace.
+ *                   Use zstd_dstream_workspace_bound(max_window_size) to
+ *                   determine how large the workspace must be.
  *
- * Return:         The zstd streaming decompression context.
+ * Return:           The zstd streaming decompression context.
  */
-ZSTD_DStream *ZSTD_initDStream_usingDDict(size_t maxWindowSize,
-	const ZSTD_DDict *ddict, void *workspace, size_t workspaceSize);
+zstd_dstream *zstd_init_dstream(size_t max_window_size, void *workspace,
+	size_t workspace_size);
 
-/*===== Streaming decompression functions =====*/
 /**
- * ZSTD_resetDStream() - reset the context using parameters from creation
- * @zds:   The zstd streaming decompression context to reset.
+ * zstd_reset_dstream() - reset the context using parameters from creation
+ * @dstream: The zstd streaming decompression context to reset.
  *
  * Resets the context using the parameters from creation. Skips dictionary
  * loading, since it can be reused.
  *
- * Return: Zero or an error, which can be checked using ZSTD_isError().
+ * Return:   Zero or an error, which can be checked using zstd_is_error().
  */
-size_t ZSTD_resetDStream(ZSTD_DStream *zds);
+size_t zstd_reset_dstream(zstd_dstream *dstream);
+
 /**
- * ZSTD_decompressStream() - streaming decompress some of input into output
- * @zds:    The zstd streaming decompression context.
- * @output: Destination buffer. `output.pos` is updated to indicate how much
- *          decompressed data was written.
- * @input:  Source buffer. `input.pos` is updated to indicate how much data was
- *          read. Note that it may not consume the entire input, in which case
- *          `input.pos < input.size`, and it's up to the caller to present
- *          remaining data again.
+ * zstd_decompress_stream() - streaming decompress some of input into output
+ * @dstream: The zstd streaming decompression context.
+ * @output:  Destination buffer. `output.pos` is updated to indicate how much
+ *           decompressed data was written.
+ * @input:   Source buffer. `input.pos` is updated to indicate how much data was
+ *           read. Note that it may not consume the entire input, in which case
+ *           `input.pos < input.size`, and it's up to the caller to present
+ *           remaining data again.
  *
  * The `input` and `output` buffers may be any size. Guaranteed to make some
  * forward progress if `input` and `output` are not empty.
- * ZSTD_decompressStream() will not consume the last byte of the frame until
+ * zstd_decompress_stream() will not consume the last byte of the frame until
  * the entire frame is flushed.
  *
- * Return:  Returns 0 iff a frame is completely decoded and fully flushed.
- *          Otherwise returns a hint for the number of bytes to use as the input
- *          for the next function call or an error, which can be checked using
- *          ZSTD_isError(). The size hint will never load more than the frame.
+ * Return:   Returns 0 iff a frame is completely decoded and fully flushed.
+ *           Otherwise returns a hint for the number of bytes to use as the
+ *           input for the next function call or an error, which can be checked
+ *           using zstd_is_error(). The size hint will never load more than the
+ *           frame.
  */
-size_t ZSTD_decompressStream(ZSTD_DStream *zds, ZSTD_outBuffer *output,
-	ZSTD_inBuffer *input);
+size_t zstd_decompress_stream(zstd_dstream *dstream, zstd_out_buffer *output,
+	zstd_in_buffer *input);
 
-/**
- * ZSTD_DStreamInSize() - recommended size for the input buffer
- *
- * Return: The recommended size for the input buffer.
- */
-size_t ZSTD_DStreamInSize(void);
-/**
- * ZSTD_DStreamOutSize() - recommended size for the output buffer
- *
- * When the output buffer is at least this large, it is guaranteed to be large
- * enough to flush at least one complete decompressed block.
- *
- * Return: The recommended size for the output buffer.
- */
-size_t ZSTD_DStreamOutSize(void);
-
-
-/* --- Constants ---*/
-#define ZSTD_MAGICNUMBER            0xFD2FB528   /* >= v0.8.0 */
-#define ZSTD_MAGIC_SKIPPABLE_START  0x184D2A50U
-
-#define ZSTD_CONTENTSIZE_UNKNOWN (0ULL - 1)
-#define ZSTD_CONTENTSIZE_ERROR   (0ULL - 2)
-
-#define ZSTD_WINDOWLOG_MAX_32  27
-#define ZSTD_WINDOWLOG_MAX_64  27
-#define ZSTD_WINDOWLOG_MAX \
-	((unsigned int)(sizeof(size_t) == 4 \
-		? ZSTD_WINDOWLOG_MAX_32 \
-		: ZSTD_WINDOWLOG_MAX_64))
-#define ZSTD_WINDOWLOG_MIN 10
-#define ZSTD_HASHLOG_MAX ZSTD_WINDOWLOG_MAX
-#define ZSTD_HASHLOG_MIN        6
-#define ZSTD_CHAINLOG_MAX     (ZSTD_WINDOWLOG_MAX+1)
-#define ZSTD_CHAINLOG_MIN      ZSTD_HASHLOG_MIN
-#define ZSTD_HASHLOG3_MAX      17
-#define ZSTD_SEARCHLOG_MAX    (ZSTD_WINDOWLOG_MAX-1)
-#define ZSTD_SEARCHLOG_MIN      1
-/* only for ZSTD_fast, other strategies are limited to 6 */
-#define ZSTD_SEARCHLENGTH_MAX   7
-/* only for ZSTD_btopt, other strategies are limited to 4 */
-#define ZSTD_SEARCHLENGTH_MIN   3
-#define ZSTD_TARGETLENGTH_MIN   4
-#define ZSTD_TARGETLENGTH_MAX 999
-
-/* for static allocation */
-#define ZSTD_FRAMEHEADERSIZE_MAX 18
-#define ZSTD_FRAMEHEADERSIZE_MIN  6
-#define ZSTD_frameHeaderSize_prefix 5
-#define ZSTD_frameHeaderSize_min ZSTD_FRAMEHEADERSIZE_MIN
-#define ZSTD_frameHeaderSize_max ZSTD_FRAMEHEADERSIZE_MAX
-/* magic number + skippable frame length */
-#define ZSTD_skippableHeaderSize 8
-
-
-/*-*************************************
- * Compressed size functions
- **************************************/
-
-/**
- * ZSTD_findFrameCompressedSize() - returns the size of a compressed frame
- * @src:     Source buffer. It should point to the start of a zstd encoded frame
- *           or a skippable frame.
- * @srcSize: The size of the source buffer. It must be at least as large as the
- *           size of the frame.
- *
- * Return:   The compressed size of the frame pointed to by `src` or an error,
- *           which can be check with ZSTD_isError().
- *           Suitable to pass to ZSTD_decompress() or similar functions.
- */
-size_t ZSTD_findFrameCompressedSize(const void *src, size_t srcSize);
-
-/*-*************************************
- * Decompressed size functions
- **************************************/
-/**
- * ZSTD_getFrameContentSize() - returns the content size in a zstd frame header
- * @src:     It should point to the start of a zstd encoded frame.
- * @srcSize: The size of the source buffer. It must be at least as large as the
- *           frame header. `ZSTD_frameHeaderSize_max` is always large enough.
- *
- * Return:   The frame content size stored in the frame header if known.
- *           `ZSTD_CONTENTSIZE_UNKNOWN` if the content size isn't stored in the
- *           frame header. `ZSTD_CONTENTSIZE_ERROR` on invalid input.
- */
-unsigned long long ZSTD_getFrameContentSize(const void *src, size_t srcSize);
+/* ======   Frame Inspection Functions ====== */
 
 /**
- * ZSTD_findDecompressedSize() - returns decompressed size of a series of frames
- * @src:     It should point to the start of a series of zstd encoded and/or
- *           skippable frames.
- * @srcSize: The exact size of the series of frames.
+ * zstd_find_frame_compressed_size() - returns the size of a compressed frame
+ * @src:      Source buffer. It should point to the start of a zstd encoded
+ *            frame or a skippable frame.
+ * @src_size: The size of the source buffer. It must be at least as large as the
+ *            size of the frame.
  *
- * If any zstd encoded frame in the series doesn't have the frame content size
- * set, `ZSTD_CONTENTSIZE_UNKNOWN` is returned. But frame content size is always
- * set when using ZSTD_compress(). The decompressed size can be very large.
- * If the source is untrusted, the decompressed size could be wrong or
- * intentionally modified. Always ensure the result fits within the
- * application's authorized limits. ZSTD_findDecompressedSize() handles multiple
- * frames, and so it must traverse the input to read each frame header. This is
- * efficient as most of the data is skipped, however it does mean that all frame
- * data must be present and valid.
- *
- * Return:   Decompressed size of all the data contained in the frames if known.
- *           `ZSTD_CONTENTSIZE_UNKNOWN` if the decompressed size is unknown.
- *           `ZSTD_CONTENTSIZE_ERROR` if an error occurred.
- */
-unsigned long long ZSTD_findDecompressedSize(const void *src, size_t srcSize);
-
-/*-*************************************
- * Advanced compression functions
- **************************************/
-/**
- * ZSTD_checkCParams() - ensure parameter values remain within authorized range
- * @cParams: The zstd compression parameters.
- *
- * Return:   Zero or an error, which can be checked using ZSTD_isError().
+ * Return:    The compressed size of the frame pointed to by `src` or an error,
+ *            which can be check with zstd_is_error().
+ *            Suitable to pass to ZSTD_decompress() or similar functions.
  */
-size_t ZSTD_checkCParams(ZSTD_compressionParameters cParams);
+size_t zstd_find_frame_compressed_size(const void *src, size_t src_size);
 
 /**
- * ZSTD_adjustCParams() - optimize parameters for a given srcSize and dictSize
- * @srcSize:  Optionally the estimated source size, or zero if unknown.
- * @dictSize: Optionally the estimated dictionary size, or zero if unknown.
- *
- * Return:    The optimized parameters.
- */
-ZSTD_compressionParameters ZSTD_adjustCParams(
-	ZSTD_compressionParameters cParams, unsigned long long srcSize,
-	size_t dictSize);
-
-/*--- Advanced decompression functions ---*/
-
-/**
- * ZSTD_isFrame() - returns true iff the buffer starts with a valid frame
- * @buffer: The source buffer to check.
- * @size:   The size of the source buffer, must be at least 4 bytes.
- *
- * Return: True iff the buffer starts with a zstd or skippable frame identifier.
- */
-unsigned int ZSTD_isFrame(const void *buffer, size_t size);
-
-/**
- * ZSTD_getDictID_fromDict() - returns the dictionary id stored in a dictionary
- * @dict:     The dictionary buffer.
- * @dictSize: The size of the dictionary buffer.
- *
- * Return:    The dictionary id stored within the dictionary or 0 if the
- *            dictionary is not a zstd dictionary. If it returns 0 the
- *            dictionary can still be loaded as a content-only dictionary.
- */
-unsigned int ZSTD_getDictID_fromDict(const void *dict, size_t dictSize);
-
-/**
- * ZSTD_getDictID_fromDDict() - returns the dictionary id stored in a ZSTD_DDict
- * @ddict: The ddict to find the id of.
- *
- * Return: The dictionary id stored within `ddict` or 0 if the dictionary is not
- *         a zstd dictionary. If it returns 0 `ddict` will be loaded as a
- *         content-only dictionary.
- */
-unsigned int ZSTD_getDictID_fromDDict(const ZSTD_DDict *ddict);
-
-/**
- * ZSTD_getDictID_fromFrame() - returns the dictionary id stored in a zstd frame
- * @src:     Source buffer. It must be a zstd encoded frame.
- * @srcSize: The size of the source buffer. It must be at least as large as the
- *           frame header. `ZSTD_frameHeaderSize_max` is always large enough.
- *
- * Return:   The dictionary id required to decompress the frame stored within
- *           `src` or 0 if the dictionary id could not be decoded. It can return
- *           0 if the frame does not require a dictionary, the dictionary id
- *           wasn't stored in the frame, `src` is not a zstd frame, or `srcSize`
- *           is too small.
- */
-unsigned int ZSTD_getDictID_fromFrame(const void *src, size_t srcSize);
-
-/**
- * struct ZSTD_frameParams - zstd frame parameters stored in the frame header
- * @frameContentSize: The frame content size, or 0 if not present.
+ * struct zstd_frame_params - zstd frame parameters stored in the frame header
+ * @frameContentSize: The frame content size, or ZSTD_CONTENTSIZE_UNKNOWN if not
+ *                    present.
  * @windowSize:       The window size, or 0 if the frame is a skippable frame.
+ * @blockSizeMax:     The maximum block size.
+ * @frameType:        The frame type (zstd or skippable)
+ * @headerSize:       The size of the frame header.
  * @dictID:           The dictionary id, or 0 if not present.
  * @checksumFlag:     Whether a checksum was used.
+ *
+ * See zstd_lib.h.
  */
-typedef struct {
-	unsigned long long frameContentSize;
-	unsigned int windowSize;
-	unsigned int dictID;
-	unsigned int checksumFlag;
-} ZSTD_frameParams;
+typedef ZSTD_frameHeader zstd_frame_header;
 
 /**
- * ZSTD_getFrameParams() - extracts parameters from a zstd or skippable frame
- * @fparamsPtr: On success the frame parameters are written here.
- * @src:        The source buffer. It must point to a zstd or skippable frame.
- * @srcSize:    The size of the source buffer. `ZSTD_frameHeaderSize_max` is
- *              always large enough to succeed.
+ * zstd_get_frame_header() - extracts parameters from a zstd or skippable frame
+ * @params:   On success the frame parameters are written here.
+ * @src:      The source buffer. It must point to a zstd or skippable frame.
+ * @src_size: The size of the source buffer.
  *
- * Return:      0 on success. If more data is required it returns how many bytes
- *              must be provided to make forward progress. Otherwise it returns
- *              an error, which can be checked using ZSTD_isError().
+ * Return:    0 on success. If more data is required it returns how many bytes
+ *            must be provided to make forward progress. Otherwise it returns
+ *            an error, which can be checked using zstd_is_error().
  */
-size_t ZSTD_getFrameParams(ZSTD_frameParams *fparamsPtr, const void *src,
-	size_t srcSize);
-
-/*-*****************************************************************************
- * Buffer-less and synchronous inner streaming functions
- *
- * This is an advanced API, giving full control over buffer management, for
- * users which need direct control over memory.
- * But it's also a complex one, with many restrictions (documented below).
- * Prefer using normal streaming API for an easier experience
- ******************************************************************************/
-
-/*-*****************************************************************************
- * Buffer-less streaming compression (synchronous mode)
- *
- * A ZSTD_CCtx object is required to track streaming operations.
- * Use ZSTD_initCCtx() to initialize a context.
- * ZSTD_CCtx object can be re-used multiple times within successive compression
- * operations.
- *
- * Start by initializing a context.
- * Use ZSTD_compressBegin(), or ZSTD_compressBegin_usingDict() for dictionary
- * compression,
- * or ZSTD_compressBegin_advanced(), for finer parameter control.
- * It's also possible to duplicate a reference context which has already been
- * initialized, using ZSTD_copyCCtx()
- *
- * Then, consume your input using ZSTD_compressContinue().
- * There are some important considerations to keep in mind when using this
- * advanced function :
- * - ZSTD_compressContinue() has no internal buffer. It uses externally provided
- *   buffer only.
- * - Interface is synchronous : input is consumed entirely and produce 1+
- *   (or more) compressed blocks.
- * - Caller must ensure there is enough space in `dst` to store compressed data
- *   under worst case scenario. Worst case evaluation is provided by
- *   ZSTD_compressBound().
- *   ZSTD_compressContinue() doesn't guarantee recover after a failed
- *   compression.
- * - ZSTD_compressContinue() presumes prior input ***is still accessible and
- *   unmodified*** (up to maximum distance size, see WindowLog).
- *   It remembers all previous contiguous blocks, plus one separated memory
- *   segment (which can itself consists of multiple contiguous blocks)
- * - ZSTD_compressContinue() detects that prior input has been overwritten when
- *   `src` buffer overlaps. In which case, it will "discard" the relevant memory
- *   section from its history.
- *
- * Finish a frame with ZSTD_compressEnd(), which will write the last block(s)
- * and optional checksum. It's possible to use srcSize==0, in which case, it
- * will write a final empty block to end the frame. Without last block mark,
- * frames will be considered unfinished (corrupted) by decoders.
- *
- * `ZSTD_CCtx` object can be re-used (ZSTD_compressBegin()) to compress some new
- * frame.
- ******************************************************************************/
-
-/*=====   Buffer-less streaming compression functions  =====*/
-size_t ZSTD_compressBegin(ZSTD_CCtx *cctx, int compressionLevel);
-size_t ZSTD_compressBegin_usingDict(ZSTD_CCtx *cctx, const void *dict,
-	size_t dictSize, int compressionLevel);
-size_t ZSTD_compressBegin_advanced(ZSTD_CCtx *cctx, const void *dict,
-	size_t dictSize, ZSTD_parameters params,
-	unsigned long long pledgedSrcSize);
-size_t ZSTD_copyCCtx(ZSTD_CCtx *cctx, const ZSTD_CCtx *preparedCCtx,
-	unsigned long long pledgedSrcSize);
-size_t ZSTD_compressBegin_usingCDict(ZSTD_CCtx *cctx, const ZSTD_CDict *cdict,
-	unsigned long long pledgedSrcSize);
-size_t ZSTD_compressContinue(ZSTD_CCtx *cctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize);
-size_t ZSTD_compressEnd(ZSTD_CCtx *cctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize);
-
-
-
-/*-*****************************************************************************
- * Buffer-less streaming decompression (synchronous mode)
- *
- * A ZSTD_DCtx object is required to track streaming operations.
- * Use ZSTD_initDCtx() to initialize a context.
- * A ZSTD_DCtx object can be re-used multiple times.
- *
- * First typical operation is to retrieve frame parameters, using
- * ZSTD_getFrameParams(). It fills a ZSTD_frameParams structure which provide
- * important information to correctly decode the frame, such as the minimum
- * rolling buffer size to allocate to decompress data (`windowSize`), and the
- * dictionary ID used.
- * Note: content size is optional, it may not be present. 0 means unknown.
- * Note that these values could be wrong, either because of data malformation,
- * or because an attacker is spoofing deliberate false information. As a
- * consequence, check that values remain within valid application range,
- * especially `windowSize`, before allocation. Each application can set its own
- * limit, depending on local restrictions. For extended interoperability, it is
- * recommended to support at least 8 MB.
- * Frame parameters are extracted from the beginning of the compressed frame.
- * Data fragment must be large enough to ensure successful decoding, typically
- * `ZSTD_frameHeaderSize_max` bytes.
- * Result: 0: successful decoding, the `ZSTD_frameParams` structure is filled.
- *        >0: `srcSize` is too small, provide at least this many bytes.
- *        errorCode, which can be tested using ZSTD_isError().
- *
- * Start decompression, with ZSTD_decompressBegin() or
- * ZSTD_decompressBegin_usingDict(). Alternatively, you can copy a prepared
- * context, using ZSTD_copyDCtx().
- *
- * Then use ZSTD_nextSrcSizeToDecompress() and ZSTD_decompressContinue()
- * alternatively.
- * ZSTD_nextSrcSizeToDecompress() tells how many bytes to provide as 'srcSize'
- * to ZSTD_decompressContinue().
- * ZSTD_decompressContinue() requires this _exact_ amount of bytes, or it will
- * fail.
- *
- * The result of ZSTD_decompressContinue() is the number of bytes regenerated
- * within 'dst' (necessarily <= dstCapacity). It can be zero, which is not an
- * error; it just means ZSTD_decompressContinue() has decoded some metadata
- * item. It can also be an error code, which can be tested with ZSTD_isError().
- *
- * ZSTD_decompressContinue() needs previous data blocks during decompression, up
- * to `windowSize`. They should preferably be located contiguously, prior to
- * current block. Alternatively, a round buffer of sufficient size is also
- * possible. Sufficient size is determined by frame parameters.
- * ZSTD_decompressContinue() is very sensitive to contiguity, if 2 blocks don't
- * follow each other, make sure that either the compressor breaks contiguity at
- * the same place, or that previous contiguous segment is large enough to
- * properly handle maximum back-reference.
- *
- * A frame is fully decoded when ZSTD_nextSrcSizeToDecompress() returns zero.
- * Context can then be reset to start a new decompression.
- *
- * Note: it's possible to know if next input to present is a header or a block,
- * using ZSTD_nextInputType(). This information is not required to properly
- * decode a frame.
- *
- * == Special case: skippable frames ==
- *
- * Skippable frames allow integration of user-defined data into a flow of
- * concatenated frames. Skippable frames will be ignored (skipped) by a
- * decompressor. The format of skippable frames is as follows:
- * a) Skippable frame ID - 4 Bytes, Little endian format, any value from
- *    0x184D2A50 to 0x184D2A5F
- * b) Frame Size - 4 Bytes, Little endian format, unsigned 32-bits
- * c) Frame Content - any content (User Data) of length equal to Frame Size
- * For skippable frames ZSTD_decompressContinue() always returns 0.
- * For skippable frames ZSTD_getFrameParams() returns fparamsPtr->windowLog==0
- * what means that a frame is skippable.
- * Note: If fparamsPtr->frameContentSize==0, it is ambiguous: the frame might
- *       actually be a zstd encoded frame with no content. For purposes of
- *       decompression, it is valid in both cases to skip the frame using
- *       ZSTD_findFrameCompressedSize() to find its size in bytes.
- * It also returns frame size as fparamsPtr->frameContentSize.
- ******************************************************************************/
-
-/*=====   Buffer-less streaming decompression functions  =====*/
-size_t ZSTD_decompressBegin(ZSTD_DCtx *dctx);
-size_t ZSTD_decompressBegin_usingDict(ZSTD_DCtx *dctx, const void *dict,
-	size_t dictSize);
-void   ZSTD_copyDCtx(ZSTD_DCtx *dctx, const ZSTD_DCtx *preparedDCtx);
-size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx *dctx);
-size_t ZSTD_decompressContinue(ZSTD_DCtx *dctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize);
-typedef enum {
-	ZSTDnit_frameHeader,
-	ZSTDnit_blockHeader,
-	ZSTDnit_block,
-	ZSTDnit_lastBlock,
-	ZSTDnit_checksum,
-	ZSTDnit_skippableFrame
-} ZSTD_nextInputType_e;
-ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx *dctx);
-
-/*-*****************************************************************************
- * Block functions
- *
- * Block functions produce and decode raw zstd blocks, without frame metadata.
- * Frame metadata cost is typically ~18 bytes, which can be non-negligible for
- * very small blocks (< 100 bytes). User will have to take in charge required
- * information to regenerate data, such as compressed and content sizes.
- *
- * A few rules to respect:
- * - Compressing and decompressing require a context structure
- *   + Use ZSTD_initCCtx() and ZSTD_initDCtx()
- * - It is necessary to init context before starting
- *   + compression : ZSTD_compressBegin()
- *   + decompression : ZSTD_decompressBegin()
- *   + variants _usingDict() are also allowed
- *   + copyCCtx() and copyDCtx() work too
- * - Block size is limited, it must be <= ZSTD_getBlockSizeMax()
- *   + If you need to compress more, cut data into multiple blocks
- *   + Consider using the regular ZSTD_compress() instead, as frame metadata
- *     costs become negligible when source size is large.
- * - When a block is considered not compressible enough, ZSTD_compressBlock()
- *   result will be zero. In which case, nothing is produced into `dst`.
- *   + User must test for such outcome and deal directly with uncompressed data
- *   + ZSTD_decompressBlock() doesn't accept uncompressed data as input!!!
- *   + In case of multiple successive blocks, decoder must be informed of
- *     uncompressed block existence to follow proper history. Use
- *     ZSTD_insertBlock() in such a case.
- ******************************************************************************/
-
-/* Define for static allocation */
-#define ZSTD_BLOCKSIZE_ABSOLUTEMAX (128 * 1024)
-/*=====   Raw zstd block functions  =====*/
-size_t ZSTD_getBlockSizeMax(ZSTD_CCtx *cctx);
-size_t ZSTD_compressBlock(ZSTD_CCtx *cctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize);
-size_t ZSTD_decompressBlock(ZSTD_DCtx *dctx, void *dst, size_t dstCapacity,
-	const void *src, size_t srcSize);
-size_t ZSTD_insertBlock(ZSTD_DCtx *dctx, const void *blockStart,
-	size_t blockSize);
+size_t zstd_get_frame_header(zstd_frame_header *params, const void *src,
+	size_t src_size);
 
-#endif  /* ZSTD_H */
+#endif  /* LINUX_ZSTD_H */
diff --git a/include/linux/zstd_errors.h b/include/linux/zstd_errors.h
new file mode 100644
index 000000000000..58b6dd45a969
--- /dev/null
+++ b/include/linux/zstd_errors.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) Yann Collet, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+#ifndef ZSTD_ERRORS_H_398273423
+#define ZSTD_ERRORS_H_398273423
+
+
+/*===== dependency =====*/
+#include <linux/types.h>   /* size_t */
+
+
+/* =====   ZSTDERRORLIB_API : control library symbols visibility   ===== */
+#define ZSTDERRORLIB_VISIBILITY 
+#define ZSTDERRORLIB_API ZSTDERRORLIB_VISIBILITY
+
+/*-*********************************************
+ *  Error codes list
+ *-*********************************************
+ *  Error codes _values_ are pinned down since v1.3.1 only.
+ *  Therefore, don't rely on values if you may link to any version < v1.3.1.
+ *
+ *  Only values < 100 are considered stable.
+ *
+ *  note 1 : this API shall be used with static linking only.
+ *           dynamic linking is not yet officially supported.
+ *  note 2 : Prefer relying on the enum than on its value whenever possible
+ *           This is the only supported way to use the error list < v1.3.1
+ *  note 3 : ZSTD_isError() is always correct, whatever the library version.
+ **********************************************/
+typedef enum {
+  ZSTD_error_no_error = 0,
+  ZSTD_error_GENERIC  = 1,
+  ZSTD_error_prefix_unknown                = 10,
+  ZSTD_error_version_unsupported           = 12,
+  ZSTD_error_frameParameter_unsupported    = 14,
+  ZSTD_error_frameParameter_windowTooLarge = 16,
+  ZSTD_error_corruption_detected = 20,
+  ZSTD_error_checksum_wrong      = 22,
+  ZSTD_error_dictionary_corrupted      = 30,
+  ZSTD_error_dictionary_wrong          = 32,
+  ZSTD_error_dictionaryCreation_failed = 34,
+  ZSTD_error_parameter_unsupported   = 40,
+  ZSTD_error_parameter_outOfBound    = 42,
+  ZSTD_error_tableLog_tooLarge       = 44,
+  ZSTD_error_maxSymbolValue_tooLarge = 46,
+  ZSTD_error_maxSymbolValue_tooSmall = 48,
+  ZSTD_error_stage_wrong       = 60,
+  ZSTD_error_init_missing      = 62,
+  ZSTD_error_memory_allocation = 64,
+  ZSTD_error_workSpace_tooSmall= 66,
+  ZSTD_error_dstSize_tooSmall = 70,
+  ZSTD_error_srcSize_wrong    = 72,
+  ZSTD_error_dstBuffer_null   = 74,
+  /* following error codes are __NOT STABLE__, they can be removed or changed in future versions */
+  ZSTD_error_frameIndex_tooLarge = 100,
+  ZSTD_error_seekableIO          = 102,
+  ZSTD_error_dstBuffer_wrong     = 104,
+  ZSTD_error_srcBuffer_wrong     = 105,
+  ZSTD_error_maxCode = 120  /* never EVER use this value directly, it can change in future versions! Use ZSTD_isError() instead */
+} ZSTD_ErrorCode;
+
+/*! ZSTD_getErrorCode() :
+    convert a `size_t` function result into a `ZSTD_ErrorCode` enum type,
+    which can be used to compare with enum list published above */
+ZSTDERRORLIB_API ZSTD_ErrorCode ZSTD_getErrorCode(size_t functionResult);
+ZSTDERRORLIB_API const char* ZSTD_getErrorString(ZSTD_ErrorCode code);   /*< Same as ZSTD_getErrorName, but using a `ZSTD_ErrorCode` enum argument */
+
+
+
+#endif /* ZSTD_ERRORS_H_398273423 */
diff --git a/include/linux/zstd_lib.h b/include/linux/zstd_lib.h
new file mode 100644
index 000000000000..b8c7dbf98390
--- /dev/null
+++ b/include/linux/zstd_lib.h
@@ -0,0 +1,2432 @@
+/*
+ * Copyright (c) Yann Collet, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+#ifndef ZSTD_H_235446
+#define ZSTD_H_235446
+
+/* ======   Dependency   ======*/
+#include <linux/limits.h>   /* INT_MAX */
+#include <linux/types.h>   /* size_t */
+
+
+/* =====   ZSTDLIB_API : control library symbols visibility   ===== */
+#define ZSTDLIB_VISIBILITY 
+#define ZSTDLIB_API ZSTDLIB_VISIBILITY
+
+
+/* *****************************************************************************
+  Introduction
+
+  zstd, short for Zstandard, is a fast lossless compression algorithm, targeting
+  real-time compression scenarios at zlib-level and better compression ratios.
+  The zstd compression library provides in-memory compression and decompression
+  functions.
+
+  The library supports regular compression levels from 1 up to ZSTD_maxCLevel(),
+  which is currently 22. Levels >= 20, labeled `--ultra`, should be used with
+  caution, as they require more memory. The library also offers negative
+  compression levels, which extend the range of speed vs. ratio preferences.
+  The lower the level, the faster the speed (at the cost of compression).
+
+  Compression can be done in:
+    - a single step (described as Simple API)
+    - a single step, reusing a context (described as Explicit context)
+    - unbounded multiple steps (described as Streaming compression)
+
+  The compression ratio achievable on small data can be highly improved using
+  a dictionary. Dictionary compression can be performed in:
+    - a single step (described as Simple dictionary API)
+    - a single step, reusing a dictionary (described as Bulk-processing
+      dictionary API)
+
+  Advanced experimental functions can be accessed using
+  `#define ZSTD_STATIC_LINKING_ONLY` before including zstd.h.
+
+  Advanced experimental APIs should never be used with a dynamically-linked
+  library. They are not "stable"; their definitions or signatures may change in
+  the future. Only static linking is allowed.
+*******************************************************************************/
+
+/*------   Version   ------*/
+#define ZSTD_VERSION_MAJOR    1
+#define ZSTD_VERSION_MINOR    4
+#define ZSTD_VERSION_RELEASE  10
+#define ZSTD_VERSION_NUMBER  (ZSTD_VERSION_MAJOR *100*100 + ZSTD_VERSION_MINOR *100 + ZSTD_VERSION_RELEASE)
+
+/*! ZSTD_versionNumber() :
+ *  Return runtime library version, the value is (MAJOR*100*100 + MINOR*100 + RELEASE). */
+ZSTDLIB_API unsigned ZSTD_versionNumber(void);
+
+#define ZSTD_LIB_VERSION ZSTD_VERSION_MAJOR.ZSTD_VERSION_MINOR.ZSTD_VERSION_RELEASE
+#define ZSTD_QUOTE(str) #str
+#define ZSTD_EXPAND_AND_QUOTE(str) ZSTD_QUOTE(str)
+#define ZSTD_VERSION_STRING ZSTD_EXPAND_AND_QUOTE(ZSTD_LIB_VERSION)
+
+/*! ZSTD_versionString() :
+ *  Return runtime library version, like "1.4.5". Requires v1.3.0+. */
+ZSTDLIB_API const char* ZSTD_versionString(void);
+
+/* *************************************
+ *  Default constant
+ ***************************************/
+#ifndef ZSTD_CLEVEL_DEFAULT
+#  define ZSTD_CLEVEL_DEFAULT 3
+#endif
+
+/* *************************************
+ *  Constants
+ ***************************************/
+
+/* All magic numbers are supposed read/written to/from files/memory using little-endian convention */
+#define ZSTD_MAGICNUMBER            0xFD2FB528    /* valid since v0.8.0 */
+#define ZSTD_MAGIC_DICTIONARY       0xEC30A437    /* valid since v0.7.0 */
+#define ZSTD_MAGIC_SKIPPABLE_START  0x184D2A50    /* all 16 values, from 0x184D2A50 to 0x184D2A5F, signal the beginning of a skippable frame */
+#define ZSTD_MAGIC_SKIPPABLE_MASK   0xFFFFFFF0
+
+#define ZSTD_BLOCKSIZELOG_MAX  17
+#define ZSTD_BLOCKSIZE_MAX     (1<<ZSTD_BLOCKSIZELOG_MAX)
+
+
+
+/* *************************************
+*  Simple API
+***************************************/
+/*! ZSTD_compress() :
+ *  Compresses `src` content as a single zstd compressed frame into already allocated `dst`.
+ *  Hint : compression runs faster if `dstCapacity` >=  `ZSTD_compressBound(srcSize)`.
+ *  @return : compressed size written into `dst` (<= `dstCapacity),
+ *            or an error code if it fails (which can be tested using ZSTD_isError()). */
+ZSTDLIB_API size_t ZSTD_compress( void* dst, size_t dstCapacity,
+                            const void* src, size_t srcSize,
+                                  int compressionLevel);
+
+/*! ZSTD_decompress() :
+ *  `compressedSize` : must be the _exact_ size of some number of compressed and/or skippable frames.
+ *  `dstCapacity` is an upper bound of originalSize to regenerate.
+ *  If user cannot imply a maximum upper bound, it's better to use streaming mode to decompress data.
+ *  @return : the number of bytes decompressed into `dst` (<= `dstCapacity`),
+ *            or an errorCode if it fails (which can be tested using ZSTD_isError()). */
+ZSTDLIB_API size_t ZSTD_decompress( void* dst, size_t dstCapacity,
+                              const void* src, size_t compressedSize);
+
+/*! ZSTD_getFrameContentSize() : requires v1.3.0+
+ *  `src` should point to the start of a ZSTD encoded frame.
+ *  `srcSize` must be at least as large as the frame header.
+ *            hint : any size >= `ZSTD_frameHeaderSize_max` is large enough.
+ *  @return : - decompressed size of `src` frame content, if known
+ *            - ZSTD_CONTENTSIZE_UNKNOWN if the size cannot be determined
+ *            - ZSTD_CONTENTSIZE_ERROR if an error occurred (e.g. invalid magic number, srcSize too small)
+ *   note 1 : a 0 return value means the frame is valid but "empty".
+ *   note 2 : decompressed size is an optional field, it may not be present, typically in streaming mode.
+ *            When `return==ZSTD_CONTENTSIZE_UNKNOWN`, data to decompress could be any size.
+ *            In which case, it's necessary to use streaming mode to decompress data.
+ *            Optionally, application can rely on some implicit limit,
+ *            as ZSTD_decompress() only needs an upper bound of decompressed size.
+ *            (For example, data could be necessarily cut into blocks <= 16 KB).
+ *   note 3 : decompressed size is always present when compression is completed using single-pass functions,
+ *            such as ZSTD_compress(), ZSTD_compressCCtx() ZSTD_compress_usingDict() or ZSTD_compress_usingCDict().
+ *   note 4 : decompressed size can be very large (64-bits value),
+ *            potentially larger than what local system can handle as a single memory segment.
+ *            In which case, it's necessary to use streaming mode to decompress data.
+ *   note 5 : If source is untrusted, decompressed size could be wrong or intentionally modified.
+ *            Always ensure return value fits within application's authorized limits.
+ *            Each application can set its own limits.
+ *   note 6 : This function replaces ZSTD_getDecompressedSize() */
+#define ZSTD_CONTENTSIZE_UNKNOWN (0ULL - 1)
+#define ZSTD_CONTENTSIZE_ERROR   (0ULL - 2)
+ZSTDLIB_API unsigned long long ZSTD_getFrameContentSize(const void *src, size_t srcSize);
+
+/*! ZSTD_getDecompressedSize() :
+ *  NOTE: This function is now obsolete, in favor of ZSTD_getFrameContentSize().
+ *  Both functions work the same way, but ZSTD_getDecompressedSize() blends
+ *  "empty", "unknown" and "error" results to the same return value (0),
+ *  while ZSTD_getFrameContentSize() gives them separate return values.
+ * @return : decompressed size of `src` frame content _if known and not empty_, 0 otherwise. */
+ZSTDLIB_API unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize);
+
+/*! ZSTD_findFrameCompressedSize() :
+ * `src` should point to the start of a ZSTD frame or skippable frame.
+ * `srcSize` must be >= first frame size
+ * @return : the compressed size of the first frame starting at `src`,
+ *           suitable to pass as `srcSize` to `ZSTD_decompress` or similar,
+ *        or an error code if input is invalid */
+ZSTDLIB_API size_t ZSTD_findFrameCompressedSize(const void* src, size_t srcSize);
+
+
+/*======  Helper functions  ======*/
+#define ZSTD_COMPRESSBOUND(srcSize)   ((srcSize) + ((srcSize)>>8) + (((srcSize) < (128<<10)) ? (((128<<10) - (srcSize)) >> 11) /* margin, from 64 to 0 */ : 0))  /* this formula ensures that bound(A) + bound(B) <= bound(A+B) as long as A and B >= 128 KB */
+ZSTDLIB_API size_t      ZSTD_compressBound(size_t srcSize); /*!< maximum compressed size in worst case single-pass scenario */
+ZSTDLIB_API unsigned    ZSTD_isError(size_t code);          /*!< tells if a `size_t` function result is an error code */
+ZSTDLIB_API const char* ZSTD_getErrorName(size_t code);     /*!< provides readable string from an error code */
+ZSTDLIB_API int         ZSTD_minCLevel(void);               /*!< minimum negative compression level allowed */
+ZSTDLIB_API int         ZSTD_maxCLevel(void);               /*!< maximum compression level available */
+
+
+/* *************************************
+*  Explicit context
+***************************************/
+/*= Compression context
+ *  When compressing many times,
+ *  it is recommended to allocate a context just once,
+ *  and re-use it for each successive compression operation.
+ *  This will make workload friendlier for system's memory.
+ *  Note : re-using context is just a speed / resource optimization.
+ *         It doesn't change the compression ratio, which remains identical.
+ *  Note 2 : In multi-threaded environments,
+ *         use one different context per thread for parallel execution.
+ */
+typedef struct ZSTD_CCtx_s ZSTD_CCtx;
+ZSTDLIB_API ZSTD_CCtx* ZSTD_createCCtx(void);
+ZSTDLIB_API size_t     ZSTD_freeCCtx(ZSTD_CCtx* cctx);  /* accept NULL pointer */
+
+/*! ZSTD_compressCCtx() :
+ *  Same as ZSTD_compress(), using an explicit ZSTD_CCtx.
+ *  Important : in order to behave similarly to `ZSTD_compress()`,
+ *  this function compresses at requested compression level,
+ *  __ignoring any other parameter__ .
+ *  If any advanced parameter was set using the advanced API,
+ *  they will all be reset. Only `compressionLevel` remains.
+ */
+ZSTDLIB_API size_t ZSTD_compressCCtx(ZSTD_CCtx* cctx,
+                                     void* dst, size_t dstCapacity,
+                               const void* src, size_t srcSize,
+                                     int compressionLevel);
+
+/*= Decompression context
+ *  When decompressing many times,
+ *  it is recommended to allocate a context only once,
+ *  and re-use it for each successive compression operation.
+ *  This will make workload friendlier for system's memory.
+ *  Use one context per thread for parallel execution. */
+typedef struct ZSTD_DCtx_s ZSTD_DCtx;
+ZSTDLIB_API ZSTD_DCtx* ZSTD_createDCtx(void);
+ZSTDLIB_API size_t     ZSTD_freeDCtx(ZSTD_DCtx* dctx);  /* accept NULL pointer */
+
+/*! ZSTD_decompressDCtx() :
+ *  Same as ZSTD_decompress(),
+ *  requires an allocated ZSTD_DCtx.
+ *  Compatible with sticky parameters.
+ */
+ZSTDLIB_API size_t ZSTD_decompressDCtx(ZSTD_DCtx* dctx,
+                                       void* dst, size_t dstCapacity,
+                                 const void* src, size_t srcSize);
+
+
+/* *************************************
+*  Advanced compression API
+***************************************/
+
+/* API design :
+ *   Parameters are pushed one by one into an existing context,
+ *   using ZSTD_CCtx_set*() functions.
+ *   Pushed parameters are sticky : they are valid for next compressed frame, and any subsequent frame.
+ *   "sticky" parameters are applicable to `ZSTD_compress2()` and `ZSTD_compressStream*()` !
+ *   __They do not apply to "simple" one-shot variants such as ZSTD_compressCCtx()__ .
+ *
+ *   It's possible to reset all parameters to "default" using ZSTD_CCtx_reset().
+ *
+ *   This API supercedes all other "advanced" API entry points in the experimental section.
+ *   In the future, we expect to remove from experimental API entry points which are redundant with this API.
+ */
+
+
+/* Compression strategies, listed from fastest to strongest */
+typedef enum { ZSTD_fast=1,
+               ZSTD_dfast=2,
+               ZSTD_greedy=3,
+               ZSTD_lazy=4,
+               ZSTD_lazy2=5,
+               ZSTD_btlazy2=6,
+               ZSTD_btopt=7,
+               ZSTD_btultra=8,
+               ZSTD_btultra2=9
+               /* note : new strategies _might_ be added in the future.
+                         Only the order (from fast to strong) is guaranteed */
+} ZSTD_strategy;
+
+
+typedef enum {
+
+    /* compression parameters
+     * Note: When compressing with a ZSTD_CDict these parameters are superseded
+     * by the parameters used to construct the ZSTD_CDict.
+     * See ZSTD_CCtx_refCDict() for more info (superseded-by-cdict). */
+    ZSTD_c_compressionLevel=100, /* Set compression parameters according to pre-defined cLevel table.
+                              * Note that exact compression parameters are dynamically determined,
+                              * depending on both compression level and srcSize (when known).
+                              * Default level is ZSTD_CLEVEL_DEFAULT==3.
+                              * Special: value 0 means default, which is controlled by ZSTD_CLEVEL_DEFAULT.
+                              * Note 1 : it's possible to pass a negative compression level.
+                              * Note 2 : setting a level does not automatically set all other compression parameters
+                              *   to default. Setting this will however eventually dynamically impact the compression
+                              *   parameters which have not been manually set. The manually set
+                              *   ones will 'stick'. */
+    /* Advanced compression parameters :
+     * It's possible to pin down compression parameters to some specific values.
+     * In which case, these values are no longer dynamically selected by the compressor */
+    ZSTD_c_windowLog=101,    /* Maximum allowed back-reference distance, expressed as power of 2.
+                              * This will set a memory budget for streaming decompression,
+                              * with larger values requiring more memory
+                              * and typically compressing more.
+                              * Must be clamped between ZSTD_WINDOWLOG_MIN and ZSTD_WINDOWLOG_MAX.
+                              * Special: value 0 means "use default windowLog".
+                              * Note: Using a windowLog greater than ZSTD_WINDOWLOG_LIMIT_DEFAULT
+                              *       requires explicitly allowing such size at streaming decompression stage. */
+    ZSTD_c_hashLog=102,      /* Size of the initial probe table, as a power of 2.
+                              * Resulting memory usage is (1 << (hashLog+2)).
+                              * Must be clamped between ZSTD_HASHLOG_MIN and ZSTD_HASHLOG_MAX.
+                              * Larger tables improve compression ratio of strategies <= dFast,
+                              * and improve speed of strategies > dFast.
+                              * Special: value 0 means "use default hashLog". */
+    ZSTD_c_chainLog=103,     /* Size of the multi-probe search table, as a power of 2.
+                              * Resulting memory usage is (1 << (chainLog+2)).
+                              * Must be clamped between ZSTD_CHAINLOG_MIN and ZSTD_CHAINLOG_MAX.
+                              * Larger tables result in better and slower compression.
+                              * This parameter is useless for "fast" strategy.
+                              * It's still useful when using "dfast" strategy,
+                              * in which case it defines a secondary probe table.
+                              * Special: value 0 means "use default chainLog". */
+    ZSTD_c_searchLog=104,    /* Number of search attempts, as a power of 2.
+                              * More attempts result in better and slower compression.
+                              * This parameter is useless for "fast" and "dFast" strategies.
+                              * Special: value 0 means "use default searchLog". */
+    ZSTD_c_minMatch=105,     /* Minimum size of searched matches.
+                              * Note that Zstandard can still find matches of smaller size,
+                              * it just tweaks its search algorithm to look for this size and larger.
+                              * Larger values increase compression and decompression speed, but decrease ratio.
+                              * Must be clamped between ZSTD_MINMATCH_MIN and ZSTD_MINMATCH_MAX.
+                              * Note that currently, for all strategies < btopt, effective minimum is 4.
+                              *                    , for all strategies > fast, effective maximum is 6.
+                              * Special: value 0 means "use default minMatchLength". */
+    ZSTD_c_targetLength=106, /* Impact of this field depends on strategy.
+                              * For strategies btopt, btultra & btultra2:
+                              *     Length of Match considered "good enough" to stop search.
+                              *     Larger values make compression stronger, and slower.
+                              * For strategy fast:
+                              *     Distance between match sampling.
+                              *     Larger values make compression faster, and weaker.
+                              * Special: value 0 means "use default targetLength". */
+    ZSTD_c_strategy=107,     /* See ZSTD_strategy enum definition.
+                              * The higher the value of selected strategy, the more complex it is,
+                              * resulting in stronger and slower compression.
+                              * Special: value 0 means "use default strategy". */
+
+    /* LDM mode parameters */
+    ZSTD_c_enableLongDistanceMatching=160, /* Enable long distance matching.
+                                     * This parameter is designed to improve compression ratio
+                                     * for large inputs, by finding large matches at long distance.
+                                     * It increases memory usage and window size.
+                                     * Note: enabling this parameter increases default ZSTD_c_windowLog to 128 MB
+                                     * except when expressly set to a different value.
+                                     * Note: will be enabled by default if ZSTD_c_windowLog >= 128 MB and
+                                     * compression strategy >= ZSTD_btopt (== compression level 16+) */
+    ZSTD_c_ldmHashLog=161,   /* Size of the table for long distance matching, as a power of 2.
+                              * Larger values increase memory usage and compression ratio,
+                              * but decrease compression speed.
+                              * Must be clamped between ZSTD_HASHLOG_MIN and ZSTD_HASHLOG_MAX
+                              * default: windowlog - 7.
+                              * Special: value 0 means "automatically determine hashlog". */
+    ZSTD_c_ldmMinMatch=162,  /* Minimum match size for long distance matcher.
+                              * Larger/too small values usually decrease compression ratio.
+                              * Must be clamped between ZSTD_LDM_MINMATCH_MIN and ZSTD_LDM_MINMATCH_MAX.
+                              * Special: value 0 means "use default value" (default: 64). */
+    ZSTD_c_ldmBucketSizeLog=163, /* Log size of each bucket in the LDM hash table for collision resolution.
+                              * Larger values improve collision resolution but decrease compression speed.
+                              * The maximum value is ZSTD_LDM_BUCKETSIZELOG_MAX.
+                              * Special: value 0 means "use default value" (default: 3). */
+    ZSTD_c_ldmHashRateLog=164, /* Frequency of inserting/looking up entries into the LDM hash table.
+                              * Must be clamped between 0 and (ZSTD_WINDOWLOG_MAX - ZSTD_HASHLOG_MIN).
+                              * Default is MAX(0, (windowLog - ldmHashLog)), optimizing hash table usage.
+                              * Larger values improve compression speed.
+                              * Deviating far from default value will likely result in a compression ratio decrease.
+                              * Special: value 0 means "automatically determine hashRateLog". */
+
+    /* frame parameters */
+    ZSTD_c_contentSizeFlag=200, /* Content size will be written into frame header _whenever known_ (default:1)
+                              * Content size must be known at the beginning of compression.
+                              * This is automatically the case when using ZSTD_compress2(),
+                              * For streaming scenarios, content size must be provided with ZSTD_CCtx_setPledgedSrcSize() */
+    ZSTD_c_checksumFlag=201, /* A 32-bits checksum of content is written at end of frame (default:0) */
+    ZSTD_c_dictIDFlag=202,   /* When applicable, dictionary's ID is written into frame header (default:1) */
+
+    /* multi-threading parameters */
+    /* These parameters are only active if multi-threading is enabled (compiled with build macro ZSTD_MULTITHREAD).
+     * Otherwise, trying to set any other value than default (0) will be a no-op and return an error.
+     * In a situation where it's unknown if the linked library supports multi-threading or not,
+     * setting ZSTD_c_nbWorkers to any value >= 1 and consulting the return value provides a quick way to check this property.
+     */
+    ZSTD_c_nbWorkers=400,    /* Select how many threads will be spawned to compress in parallel.
+                              * When nbWorkers >= 1, triggers asynchronous mode when invoking ZSTD_compressStream*() :
+                              * ZSTD_compressStream*() consumes input and flush output if possible, but immediately gives back control to caller,
+                              * while compression is performed in parallel, within worker thread(s).
+                              * (note : a strong exception to this rule is when first invocation of ZSTD_compressStream2() sets ZSTD_e_end :
+                              *  in which case, ZSTD_compressStream2() delegates to ZSTD_compress2(), which is always a blocking call).
+                              * More workers improve speed, but also increase memory usage.
+                              * Default value is `0`, aka "single-threaded mode" : no worker is spawned,
+                              * compression is performed inside Caller's thread, and all invocations are blocking */
+    ZSTD_c_jobSize=401,      /* Size of a compression job. This value is enforced only when nbWorkers >= 1.
+                              * Each compression job is completed in parallel, so this value can indirectly impact the nb of active threads.
+                              * 0 means default, which is dynamically determined based on compression parameters.
+                              * Job size must be a minimum of overlap size, or 1 MB, whichever is largest.
+                              * The minimum size is automatically and transparently enforced. */
+    ZSTD_c_overlapLog=402,   /* Control the overlap size, as a fraction of window size.
+                              * The overlap size is an amount of data reloaded from previous job at the beginning of a new job.
+                              * It helps preserve compression ratio, while each job is compressed in parallel.
+                              * This value is enforced only when nbWorkers >= 1.
+                              * Larger values increase compression ratio, but decrease speed.
+                              * Possible values range from 0 to 9 :
+                              * - 0 means "default" : value will be determined by the library, depending on strategy
+                              * - 1 means "no overlap"
+                              * - 9 means "full overlap", using a full window size.
+                              * Each intermediate rank increases/decreases load size by a factor 2 :
+                              * 9: full window;  8: w/2;  7: w/4;  6: w/8;  5:w/16;  4: w/32;  3:w/64;  2:w/128;  1:no overlap;  0:default
+                              * default value varies between 6 and 9, depending on strategy */
+
+    /* note : additional experimental parameters are also available
+     * within the experimental section of the API.
+     * At the time of this writing, they include :
+     * ZSTD_c_rsyncable
+     * ZSTD_c_format
+     * ZSTD_c_forceMaxWindow
+     * ZSTD_c_forceAttachDict
+     * ZSTD_c_literalCompressionMode
+     * ZSTD_c_targetCBlockSize
+     * ZSTD_c_srcSizeHint
+     * ZSTD_c_enableDedicatedDictSearch
+     * ZSTD_c_stableInBuffer
+     * ZSTD_c_stableOutBuffer
+     * ZSTD_c_blockDelimiters
+     * ZSTD_c_validateSequences
+     * Because they are not stable, it's necessary to define ZSTD_STATIC_LINKING_ONLY to access them.
+     * note : never ever use experimentalParam? names directly;
+     *        also, the enums values themselves are unstable and can still change.
+     */
+     ZSTD_c_experimentalParam1=500,
+     ZSTD_c_experimentalParam2=10,
+     ZSTD_c_experimentalParam3=1000,
+     ZSTD_c_experimentalParam4=1001,
+     ZSTD_c_experimentalParam5=1002,
+     ZSTD_c_experimentalParam6=1003,
+     ZSTD_c_experimentalParam7=1004,
+     ZSTD_c_experimentalParam8=1005,
+     ZSTD_c_experimentalParam9=1006,
+     ZSTD_c_experimentalParam10=1007,
+     ZSTD_c_experimentalParam11=1008,
+     ZSTD_c_experimentalParam12=1009
+} ZSTD_cParameter;
+
+typedef struct {
+    size_t error;
+    int lowerBound;
+    int upperBound;
+} ZSTD_bounds;
+
+/*! ZSTD_cParam_getBounds() :
+ *  All parameters must belong to an interval with lower and upper bounds,
+ *  otherwise they will either trigger an error or be automatically clamped.
+ * @return : a structure, ZSTD_bounds, which contains
+ *         - an error status field, which must be tested using ZSTD_isError()
+ *         - lower and upper bounds, both inclusive
+ */
+ZSTDLIB_API ZSTD_bounds ZSTD_cParam_getBounds(ZSTD_cParameter cParam);
+
+/*! ZSTD_CCtx_setParameter() :
+ *  Set one compression parameter, selected by enum ZSTD_cParameter.
+ *  All parameters have valid bounds. Bounds can be queried using ZSTD_cParam_getBounds().
+ *  Providing a value beyond bound will either clamp it, or trigger an error (depending on parameter).
+ *  Setting a parameter is generally only possible during frame initialization (before starting compression).
+ *  Exception : when using multi-threading mode (nbWorkers >= 1),
+ *              the following parameters can be updated _during_ compression (within same frame):
+ *              => compressionLevel, hashLog, chainLog, searchLog, minMatch, targetLength and strategy.
+ *              new parameters will be active for next job only (after a flush()).
+ * @return : an error code (which can be tested using ZSTD_isError()).
+ */
+ZSTDLIB_API size_t ZSTD_CCtx_setParameter(ZSTD_CCtx* cctx, ZSTD_cParameter param, int value);
+
+/*! ZSTD_CCtx_setPledgedSrcSize() :
+ *  Total input data size to be compressed as a single frame.
+ *  Value will be written in frame header, unless if explicitly forbidden using ZSTD_c_contentSizeFlag.
+ *  This value will also be controlled at end of frame, and trigger an error if not respected.
+ * @result : 0, or an error code (which can be tested with ZSTD_isError()).
+ *  Note 1 : pledgedSrcSize==0 actually means zero, aka an empty frame.
+ *           In order to mean "unknown content size", pass constant ZSTD_CONTENTSIZE_UNKNOWN.
+ *           ZSTD_CONTENTSIZE_UNKNOWN is default value for any new frame.
+ *  Note 2 : pledgedSrcSize is only valid once, for the next frame.
+ *           It's discarded at the end of the frame, and replaced by ZSTD_CONTENTSIZE_UNKNOWN.
+ *  Note 3 : Whenever all input data is provided and consumed in a single round,
+ *           for example with ZSTD_compress2(),
+ *           or invoking immediately ZSTD_compressStream2(,,,ZSTD_e_end),
+ *           this value is automatically overridden by srcSize instead.
+ */
+ZSTDLIB_API size_t ZSTD_CCtx_setPledgedSrcSize(ZSTD_CCtx* cctx, unsigned long long pledgedSrcSize);
+
+typedef enum {
+    ZSTD_reset_session_only = 1,
+    ZSTD_reset_parameters = 2,
+    ZSTD_reset_session_and_parameters = 3
+} ZSTD_ResetDirective;
+
+/*! ZSTD_CCtx_reset() :
+ *  There are 2 different things that can be reset, independently or jointly :
+ *  - The session : will stop compressing current frame, and make CCtx ready to start a new one.
+ *                  Useful after an error, or to interrupt any ongoing compression.
+ *                  Any internal data not yet flushed is cancelled.
+ *                  Compression parameters and dictionary remain unchanged.
+ *                  They will be used to compress next frame.
+ *                  Resetting session never fails.
+ *  - The parameters : changes all parameters back to "default".
+ *                  This removes any reference to any dictionary too.
+ *                  Parameters can only be changed between 2 sessions (i.e. no compression is currently ongoing)
+ *                  otherwise the reset fails, and function returns an error value (which can be tested using ZSTD_isError())
+ *  - Both : similar to resetting the session, followed by resetting parameters.
+ */
+ZSTDLIB_API size_t ZSTD_CCtx_reset(ZSTD_CCtx* cctx, ZSTD_ResetDirective reset);
+
+/*! ZSTD_compress2() :
+ *  Behave the same as ZSTD_compressCCtx(), but compression parameters are set using the advanced API.
+ *  ZSTD_compress2() always starts a new frame.
+ *  Should cctx hold data from a previously unfinished frame, everything about it is forgotten.
+ *  - Compression parameters are pushed into CCtx before starting compression, using ZSTD_CCtx_set*()
+ *  - The function is always blocking, returns when compression is completed.
+ *  Hint : compression runs faster if `dstCapacity` >=  `ZSTD_compressBound(srcSize)`.
+ * @return : compressed size written into `dst` (<= `dstCapacity),
+ *           or an error code if it fails (which can be tested using ZSTD_isError()).
+ */
+ZSTDLIB_API size_t ZSTD_compress2( ZSTD_CCtx* cctx,
+                                   void* dst, size_t dstCapacity,
+                             const void* src, size_t srcSize);
+
+
+/* *************************************
+*  Advanced decompression API
+***************************************/
+
+/* The advanced API pushes parameters one by one into an existing DCtx context.
+ * Parameters are sticky, and remain valid for all following frames
+ * using the same DCtx context.
+ * It's possible to reset parameters to default values using ZSTD_DCtx_reset().
+ * Note : This API is compatible with existing ZSTD_decompressDCtx() and ZSTD_decompressStream().
+ *        Therefore, no new decompression function is necessary.
+ */
+
+typedef enum {
+
+    ZSTD_d_windowLogMax=100, /* Select a size limit (in power of 2) beyond which
+                              * the streaming API will refuse to allocate memory buffer
+                              * in order to protect the host from unreasonable memory requirements.
+                              * This parameter is only useful in streaming mode, since no internal buffer is allocated in single-pass mode.
+                              * By default, a decompression context accepts window sizes <= (1 << ZSTD_WINDOWLOG_LIMIT_DEFAULT).
+                              * Special: value 0 means "use default maximum windowLog". */
+
+    /* note : additional experimental parameters are also available
+     * within the experimental section of the API.
+     * At the time of this writing, they include :
+     * ZSTD_d_format
+     * ZSTD_d_stableOutBuffer
+     * ZSTD_d_forceIgnoreChecksum
+     * ZSTD_d_refMultipleDDicts
+     * Because they are not stable, it's necessary to define ZSTD_STATIC_LINKING_ONLY to access them.
+     * note : never ever use experimentalParam? names directly
+     */
+     ZSTD_d_experimentalParam1=1000,
+     ZSTD_d_experimentalParam2=1001,
+     ZSTD_d_experimentalParam3=1002,
+     ZSTD_d_experimentalParam4=1003
+
+} ZSTD_dParameter;
+
+/*! ZSTD_dParam_getBounds() :
+ *  All parameters must belong to an interval with lower and upper bounds,
+ *  otherwise they will either trigger an error or be automatically clamped.
+ * @return : a structure, ZSTD_bounds, which contains
+ *         - an error status field, which must be tested using ZSTD_isError()
+ *         - both lower and upper bounds, inclusive
+ */
+ZSTDLIB_API ZSTD_bounds ZSTD_dParam_getBounds(ZSTD_dParameter dParam);
+
+/*! ZSTD_DCtx_setParameter() :
+ *  Set one compression parameter, selected by enum ZSTD_dParameter.
+ *  All parameters have valid bounds. Bounds can be queried using ZSTD_dParam_getBounds().
+ *  Providing a value beyond bound will either clamp it, or trigger an error (depending on parameter).
+ *  Setting a parameter is only possible during frame initialization (before starting decompression).
+ * @return : 0, or an error code (which can be tested using ZSTD_isError()).
+ */
+ZSTDLIB_API size_t ZSTD_DCtx_setParameter(ZSTD_DCtx* dctx, ZSTD_dParameter param, int value);
+
+/*! ZSTD_DCtx_reset() :
+ *  Return a DCtx to clean state.
+ *  Session and parameters can be reset jointly or separately.
+ *  Parameters can only be reset when no active frame is being decompressed.
+ * @return : 0, or an error code, which can be tested with ZSTD_isError()
+ */
+ZSTDLIB_API size_t ZSTD_DCtx_reset(ZSTD_DCtx* dctx, ZSTD_ResetDirective reset);
+
+
+/* **************************
+*  Streaming
+****************************/
+
+typedef struct ZSTD_inBuffer_s {
+  const void* src;    /*< start of input buffer */
+  size_t size;        /*< size of input buffer */
+  size_t pos;         /*< position where reading stopped. Will be updated. Necessarily 0 <= pos <= size */
+} ZSTD_inBuffer;
+
+typedef struct ZSTD_outBuffer_s {
+  void*  dst;         /*< start of output buffer */
+  size_t size;        /*< size of output buffer */
+  size_t pos;         /*< position where writing stopped. Will be updated. Necessarily 0 <= pos <= size */
+} ZSTD_outBuffer;
+
+
+
+/*-***********************************************************************
+*  Streaming compression - HowTo
+*
+*  A ZSTD_CStream object is required to track streaming operation.
+*  Use ZSTD_createCStream() and ZSTD_freeCStream() to create/release resources.
+*  ZSTD_CStream objects can be reused multiple times on consecutive compression operations.
+*  It is recommended to re-use ZSTD_CStream since it will play nicer with system's memory, by re-using already allocated memory.
+*
+*  For parallel execution, use one separate ZSTD_CStream per thread.
+*
+*  note : since v1.3.0, ZSTD_CStream and ZSTD_CCtx are the same thing.
+*
+*  Parameters are sticky : when starting a new compression on the same context,
+*  it will re-use the same sticky parameters as previous compression session.
+*  When in doubt, it's recommended to fully initialize the context before usage.
+*  Use ZSTD_CCtx_reset() to reset the context and ZSTD_CCtx_setParameter(),
+*  ZSTD_CCtx_setPledgedSrcSize(), or ZSTD_CCtx_loadDictionary() and friends to
+*  set more specific parameters, the pledged source size, or load a dictionary.
+*
+*  Use ZSTD_compressStream2() with ZSTD_e_continue as many times as necessary to
+*  consume input stream. The function will automatically update both `pos`
+*  fields within `input` and `output`.
+*  Note that the function may not consume the entire input, for example, because
+*  the output buffer is already full, in which case `input.pos < input.size`.
+*  The caller must check if input has been entirely consumed.
+*  If not, the caller must make some room to receive more compressed data,
+*  and then present again remaining input data.
+*  note: ZSTD_e_continue is guaranteed to make some forward progress when called,
+*        but doesn't guarantee maximal forward progress. This is especially relevant
+*        when compressing with multiple threads. The call won't block if it can
+*        consume some input, but if it can't it will wait for some, but not all,
+*        output to be flushed.
+* @return : provides a minimum amount of data remaining to be flushed from internal buffers
+*           or an error code, which can be tested using ZSTD_isError().
+*
+*  At any moment, it's possible to flush whatever data might remain stuck within internal buffer,
+*  using ZSTD_compressStream2() with ZSTD_e_flush. `output->pos` will be updated.
+*  Note that, if `output->size` is too small, a single invocation with ZSTD_e_flush might not be enough (return code > 0).
+*  In which case, make some room to receive more compressed data, and call again ZSTD_compressStream2() with ZSTD_e_flush.
+*  You must continue calling ZSTD_compressStream2() with ZSTD_e_flush until it returns 0, at which point you can change the
+*  operation.
+*  note: ZSTD_e_flush will flush as much output as possible, meaning when compressing with multiple threads, it will
+*        block until the flush is complete or the output buffer is full.
+*  @return : 0 if internal buffers are entirely flushed,
+*            >0 if some data still present within internal buffer (the value is minimal estimation of remaining size),
+*            or an error code, which can be tested using ZSTD_isError().
+*
+*  Calling ZSTD_compressStream2() with ZSTD_e_end instructs to finish a frame.
+*  It will perform a flush and write frame epilogue.
+*  The epilogue is required for decoders to consider a frame completed.
+*  flush operation is the same, and follows same rules as calling ZSTD_compressStream2() with ZSTD_e_flush.
+*  You must continue calling ZSTD_compressStream2() with ZSTD_e_end until it returns 0, at which point you are free to
+*  start a new frame.
+*  note: ZSTD_e_end will flush as much output as possible, meaning when compressing with multiple threads, it will
+*        block until the flush is complete or the output buffer is full.
+*  @return : 0 if frame fully completed and fully flushed,
+*            >0 if some data still present within internal buffer (the value is minimal estimation of remaining size),
+*            or an error code, which can be tested using ZSTD_isError().
+*
+* *******************************************************************/
+
+typedef ZSTD_CCtx ZSTD_CStream;  /*< CCtx and CStream are now effectively same object (>= v1.3.0) */
+                                 /* Continue to distinguish them for compatibility with older versions <= v1.2.0 */
+/*===== ZSTD_CStream management functions =====*/
+ZSTDLIB_API ZSTD_CStream* ZSTD_createCStream(void);
+ZSTDLIB_API size_t ZSTD_freeCStream(ZSTD_CStream* zcs);  /* accept NULL pointer */
+
+/*===== Streaming compression functions =====*/
+typedef enum {
+    ZSTD_e_continue=0, /* collect more data, encoder decides when to output compressed result, for optimal compression ratio */
+    ZSTD_e_flush=1,    /* flush any data provided so far,
+                        * it creates (at least) one new block, that can be decoded immediately on reception;
+                        * frame will continue: any future data can still reference previously compressed data, improving compression.
+                        * note : multithreaded compression will block to flush as much output as possible. */
+    ZSTD_e_end=2       /* flush any remaining data _and_ close current frame.
+                        * note that frame is only closed after compressed data is fully flushed (return value == 0).
+                        * After that point, any additional data starts a new frame.
+                        * note : each frame is independent (does not reference any content from previous frame).
+                        : note : multithreaded compression will block to flush as much output as possible. */
+} ZSTD_EndDirective;
+
+/*! ZSTD_compressStream2() :
+ *  Behaves about the same as ZSTD_compressStream, with additional control on end directive.
+ *  - Compression parameters are pushed into CCtx before starting compression, using ZSTD_CCtx_set*()
+ *  - Compression parameters cannot be changed once compression is started (save a list of exceptions in multi-threading mode)
+ *  - output->pos must be <= dstCapacity, input->pos must be <= srcSize
+ *  - output->pos and input->pos will be updated. They are guaranteed to remain below their respective limit.
+ *  - endOp must be a valid directive
+ *  - When nbWorkers==0 (default), function is blocking : it completes its job before returning to caller.
+ *  - When nbWorkers>=1, function is non-blocking : it copies a portion of input, distributes jobs to internal worker threads, flush to output whatever is available,
+ *                                                  and then immediately returns, just indicating that there is some data remaining to be flushed.
+ *                                                  The function nonetheless guarantees forward progress : it will return only after it reads or write at least 1+ byte.
+ *  - Exception : if the first call requests a ZSTD_e_end directive and provides enough dstCapacity, the function delegates to ZSTD_compress2() which is always blocking.
+ *  - @return provides a minimum amount of data remaining to be flushed from internal buffers
+ *            or an error code, which can be tested using ZSTD_isError().
+ *            if @return != 0, flush is not fully completed, there is still some data left within internal buffers.
+ *            This is useful for ZSTD_e_flush, since in this case more flushes are necessary to empty all buffers.
+ *            For ZSTD_e_end, @return == 0 when internal buffers are fully flushed and frame is completed.
+ *  - after a ZSTD_e_end directive, if internal buffer is not fully flushed (@return != 0),
+ *            only ZSTD_e_end or ZSTD_e_flush operations are allowed.
+ *            Before starting a new compression job, or changing compression parameters,
+ *            it is required to fully flush internal buffers.
+ */
+ZSTDLIB_API size_t ZSTD_compressStream2( ZSTD_CCtx* cctx,
+                                         ZSTD_outBuffer* output,
+                                         ZSTD_inBuffer* input,
+                                         ZSTD_EndDirective endOp);
+
+
+/* These buffer sizes are softly recommended.
+ * They are not required : ZSTD_compressStream*() happily accepts any buffer size, for both input and output.
+ * Respecting the recommended size just makes it a bit easier for ZSTD_compressStream*(),
+ * reducing the amount of memory shuffling and buffering, resulting in minor performance savings.
+ *
+ * However, note that these recommendations are from the perspective of a C caller program.
+ * If the streaming interface is invoked from some other language,
+ * especially managed ones such as Java or Go, through a foreign function interface such as jni or cgo,
+ * a major performance rule is to reduce crossing such interface to an absolute minimum.
+ * It's not rare that performance ends being spent more into the interface, rather than compression itself.
+ * In which cases, prefer using large buffers, as large as practical,
+ * for both input and output, to reduce the nb of roundtrips.
+ */
+ZSTDLIB_API size_t ZSTD_CStreamInSize(void);    /*< recommended size for input buffer */
+ZSTDLIB_API size_t ZSTD_CStreamOutSize(void);   /*< recommended size for output buffer. Guarantee to successfully flush at least one complete compressed block. */
+
+
+/* *****************************************************************************
+ * This following is a legacy streaming API.
+ * It can be replaced by ZSTD_CCtx_reset() and ZSTD_compressStream2().
+ * It is redundant, but remains fully supported.
+ * Advanced parameters and dictionary compression can only be used through the
+ * new API.
+ ******************************************************************************/
+
+/*!
+ * Equivalent to:
+ *
+ *     ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only);
+ *     ZSTD_CCtx_refCDict(zcs, NULL); // clear the dictionary (if any)
+ *     ZSTD_CCtx_setParameter(zcs, ZSTD_c_compressionLevel, compressionLevel);
+ */
+ZSTDLIB_API size_t ZSTD_initCStream(ZSTD_CStream* zcs, int compressionLevel);
+/*!
+ * Alternative for ZSTD_compressStream2(zcs, output, input, ZSTD_e_continue).
+ * NOTE: The return value is different. ZSTD_compressStream() returns a hint for
+ * the next read size (if non-zero and not an error). ZSTD_compressStream2()
+ * returns the minimum nb of bytes left to flush (if non-zero and not an error).
+ */
+ZSTDLIB_API size_t ZSTD_compressStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output, ZSTD_inBuffer* input);
+/*! Equivalent to ZSTD_compressStream2(zcs, output, &emptyInput, ZSTD_e_flush). */
+ZSTDLIB_API size_t ZSTD_flushStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output);
+/*! Equivalent to ZSTD_compressStream2(zcs, output, &emptyInput, ZSTD_e_end). */
+ZSTDLIB_API size_t ZSTD_endStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output);
+
+
+/*-***************************************************************************
+*  Streaming decompression - HowTo
+*
+*  A ZSTD_DStream object is required to track streaming operations.
+*  Use ZSTD_createDStream() and ZSTD_freeDStream() to create/release resources.
+*  ZSTD_DStream objects can be re-used multiple times.
+*
+*  Use ZSTD_initDStream() to start a new decompression operation.
+* @return : recommended first input size
+*  Alternatively, use advanced API to set specific properties.
+*
+*  Use ZSTD_decompressStream() repetitively to consume your input.
+*  The function will update both `pos` fields.
+*  If `input.pos < input.size`, some input has not been consumed.
+*  It's up to the caller to present again remaining data.
+*  The function tries to flush all data decoded immediately, respecting output buffer size.
+*  If `output.pos < output.size`, decoder has flushed everything it could.
+*  But if `output.pos == output.size`, there might be some data left within internal buffers.,
+*  In which case, call ZSTD_decompressStream() again to flush whatever remains in the buffer.
+*  Note : with no additional input provided, amount of data flushed is necessarily <= ZSTD_BLOCKSIZE_MAX.
+* @return : 0 when a frame is completely decoded and fully flushed,
+*        or an error code, which can be tested using ZSTD_isError(),
+*        or any other value > 0, which means there is still some decoding or flushing to do to complete current frame :
+*                                the return value is a suggested next input size (just a hint for better latency)
+*                                that will never request more than the remaining frame size.
+* *******************************************************************************/
+
+typedef ZSTD_DCtx ZSTD_DStream;  /*< DCtx and DStream are now effectively same object (>= v1.3.0) */
+                                 /* For compatibility with versions <= v1.2.0, prefer differentiating them. */
+/*===== ZSTD_DStream management functions =====*/
+ZSTDLIB_API ZSTD_DStream* ZSTD_createDStream(void);
+ZSTDLIB_API size_t ZSTD_freeDStream(ZSTD_DStream* zds);  /* accept NULL pointer */
+
+/*===== Streaming decompression functions =====*/
+
+/* This function is redundant with the advanced API and equivalent to:
+ *
+ *     ZSTD_DCtx_reset(zds, ZSTD_reset_session_only);
+ *     ZSTD_DCtx_refDDict(zds, NULL);
+ */
+ZSTDLIB_API size_t ZSTD_initDStream(ZSTD_DStream* zds);
+
+ZSTDLIB_API size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inBuffer* input);
+
+ZSTDLIB_API size_t ZSTD_DStreamInSize(void);    /*!< recommended size for input buffer */
+ZSTDLIB_API size_t ZSTD_DStreamOutSize(void);   /*!< recommended size for output buffer. Guarantee to successfully flush at least one complete block in all circumstances. */
+
+
+/* ************************
+*  Simple dictionary API
+***************************/
+/*! ZSTD_compress_usingDict() :
+ *  Compression at an explicit compression level using a Dictionary.
+ *  A dictionary can be any arbitrary data segment (also called a prefix),
+ *  or a buffer with specified information (see dictBuilder/zdict.h).
+ *  Note : This function loads the dictionary, resulting in significant startup delay.
+ *         It's intended for a dictionary used only once.
+ *  Note 2 : When `dict == NULL || dictSize < 8` no dictionary is used. */
+ZSTDLIB_API size_t ZSTD_compress_usingDict(ZSTD_CCtx* ctx,
+                                           void* dst, size_t dstCapacity,
+                                     const void* src, size_t srcSize,
+                                     const void* dict,size_t dictSize,
+                                           int compressionLevel);
+
+/*! ZSTD_decompress_usingDict() :
+ *  Decompression using a known Dictionary.
+ *  Dictionary must be identical to the one used during compression.
+ *  Note : This function loads the dictionary, resulting in significant startup delay.
+ *         It's intended for a dictionary used only once.
+ *  Note : When `dict == NULL || dictSize < 8` no dictionary is used. */
+ZSTDLIB_API size_t ZSTD_decompress_usingDict(ZSTD_DCtx* dctx,
+                                             void* dst, size_t dstCapacity,
+                                       const void* src, size_t srcSize,
+                                       const void* dict,size_t dictSize);
+
+
+/* *********************************
+ *  Bulk processing dictionary API
+ **********************************/
+typedef struct ZSTD_CDict_s ZSTD_CDict;
+
+/*! ZSTD_createCDict() :
+ *  When compressing multiple messages or blocks using the same dictionary,
+ *  it's recommended to digest the dictionary only once, since it's a costly operation.
+ *  ZSTD_createCDict() will create a state from digesting a dictionary.
+ *  The resulting state can be used for future compression operations with very limited startup cost.
+ *  ZSTD_CDict can be created once and shared by multiple threads concurrently, since its usage is read-only.
+ * @dictBuffer can be released after ZSTD_CDict creation, because its content is copied within CDict.
+ *  Note 1 : Consider experimental function `ZSTD_createCDict_byReference()` if you prefer to not duplicate @dictBuffer content.
+ *  Note 2 : A ZSTD_CDict can be created from an empty @dictBuffer,
+ *      in which case the only thing that it transports is the @compressionLevel.
+ *      This can be useful in a pipeline featuring ZSTD_compress_usingCDict() exclusively,
+ *      expecting a ZSTD_CDict parameter with any data, including those without a known dictionary. */
+ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict(const void* dictBuffer, size_t dictSize,
+                                         int compressionLevel);
+
+/*! ZSTD_freeCDict() :
+ *  Function frees memory allocated by ZSTD_createCDict().
+ *  If a NULL pointer is passed, no operation is performed. */
+ZSTDLIB_API size_t      ZSTD_freeCDict(ZSTD_CDict* CDict);
+
+/*! ZSTD_compress_usingCDict() :
+ *  Compression using a digested Dictionary.
+ *  Recommended when same dictionary is used multiple times.
+ *  Note : compression level is _decided at dictionary creation time_,
+ *     and frame parameters are hardcoded (dictID=yes, contentSize=yes, checksum=no) */
+ZSTDLIB_API size_t ZSTD_compress_usingCDict(ZSTD_CCtx* cctx,
+                                            void* dst, size_t dstCapacity,
+                                      const void* src, size_t srcSize,
+                                      const ZSTD_CDict* cdict);
+
+
+typedef struct ZSTD_DDict_s ZSTD_DDict;
+
+/*! ZSTD_createDDict() :
+ *  Create a digested dictionary, ready to start decompression operation without startup delay.
+ *  dictBuffer can be released after DDict creation, as its content is copied inside DDict. */
+ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict(const void* dictBuffer, size_t dictSize);
+
+/*! ZSTD_freeDDict() :
+ *  Function frees memory allocated with ZSTD_createDDict()
+ *  If a NULL pointer is passed, no operation is performed. */
+ZSTDLIB_API size_t      ZSTD_freeDDict(ZSTD_DDict* ddict);
+
+/*! ZSTD_decompress_usingDDict() :
+ *  Decompression using a digested Dictionary.
+ *  Recommended when same dictionary is used multiple times. */
+ZSTDLIB_API size_t ZSTD_decompress_usingDDict(ZSTD_DCtx* dctx,
+                                              void* dst, size_t dstCapacity,
+                                        const void* src, size_t srcSize,
+                                        const ZSTD_DDict* ddict);
+
+
+/* ******************************
+ *  Dictionary helper functions
+ *******************************/
+
+/*! ZSTD_getDictID_fromDict() :
+ *  Provides the dictID stored within dictionary.
+ *  if @return == 0, the dictionary is not conformant with Zstandard specification.
+ *  It can still be loaded, but as a content-only dictionary. */
+ZSTDLIB_API unsigned ZSTD_getDictID_fromDict(const void* dict, size_t dictSize);
+
+/*! ZSTD_getDictID_fromDDict() :
+ *  Provides the dictID of the dictionary loaded into `ddict`.
+ *  If @return == 0, the dictionary is not conformant to Zstandard specification, or empty.
+ *  Non-conformant dictionaries can still be loaded, but as content-only dictionaries. */
+ZSTDLIB_API unsigned ZSTD_getDictID_fromDDict(const ZSTD_DDict* ddict);
+
+/*! ZSTD_getDictID_fromFrame() :
+ *  Provides the dictID required to decompressed the frame stored within `src`.
+ *  If @return == 0, the dictID could not be decoded.
+ *  This could for one of the following reasons :
+ *  - The frame does not require a dictionary to be decoded (most common case).
+ *  - The frame was built with dictID intentionally removed. Whatever dictionary is necessary is a hidden information.
+ *    Note : this use case also happens when using a non-conformant dictionary.
+ *  - `srcSize` is too small, and as a result, the frame header could not be decoded (only possible if `srcSize < ZSTD_FRAMEHEADERSIZE_MAX`).
+ *  - This is not a Zstandard frame.
+ *  When identifying the exact failure cause, it's possible to use ZSTD_getFrameHeader(), which will provide a more precise error code. */
+ZSTDLIB_API unsigned ZSTD_getDictID_fromFrame(const void* src, size_t srcSize);
+
+
+/* *****************************************************************************
+ * Advanced dictionary and prefix API
+ *
+ * This API allows dictionaries to be used with ZSTD_compress2(),
+ * ZSTD_compressStream2(), and ZSTD_decompress(). Dictionaries are sticky, and
+ * only reset with the context is reset with ZSTD_reset_parameters or
+ * ZSTD_reset_session_and_parameters. Prefixes are single-use.
+ ******************************************************************************/
+
+
+/*! ZSTD_CCtx_loadDictionary() :
+ *  Create an internal CDict from `dict` buffer.
+ *  Decompression will have to use same dictionary.
+ * @result : 0, or an error code (which can be tested with ZSTD_isError()).
+ *  Special: Loading a NULL (or 0-size) dictionary invalidates previous dictionary,
+ *           meaning "return to no-dictionary mode".
+ *  Note 1 : Dictionary is sticky, it will be used for all future compressed frames.
+ *           To return to "no-dictionary" situation, load a NULL dictionary (or reset parameters).
+ *  Note 2 : Loading a dictionary involves building tables.
+ *           It's also a CPU consuming operation, with non-negligible impact on latency.
+ *           Tables are dependent on compression parameters, and for this reason,
+ *           compression parameters can no longer be changed after loading a dictionary.
+ *  Note 3 :`dict` content will be copied internally.
+ *           Use experimental ZSTD_CCtx_loadDictionary_byReference() to reference content instead.
+ *           In such a case, dictionary buffer must outlive its users.
+ *  Note 4 : Use ZSTD_CCtx_loadDictionary_advanced()
+ *           to precisely select how dictionary content must be interpreted. */
+ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary(ZSTD_CCtx* cctx, const void* dict, size_t dictSize);
+
+/*! ZSTD_CCtx_refCDict() :
+ *  Reference a prepared dictionary, to be used for all next compressed frames.
+ *  Note that compression parameters are enforced from within CDict,
+ *  and supersede any compression parameter previously set within CCtx.
+ *  The parameters ignored are labelled as "superseded-by-cdict" in the ZSTD_cParameter enum docs.
+ *  The ignored parameters will be used again if the CCtx is returned to no-dictionary mode.
+ *  The dictionary will remain valid for future compressed frames using same CCtx.
+ * @result : 0, or an error code (which can be tested with ZSTD_isError()).
+ *  Special : Referencing a NULL CDict means "return to no-dictionary mode".
+ *  Note 1 : Currently, only one dictionary can be managed.
+ *           Referencing a new dictionary effectively "discards" any previous one.
+ *  Note 2 : CDict is just referenced, its lifetime must outlive its usage within CCtx. */
+ZSTDLIB_API size_t ZSTD_CCtx_refCDict(ZSTD_CCtx* cctx, const ZSTD_CDict* cdict);
+
+/*! ZSTD_CCtx_refPrefix() :
+ *  Reference a prefix (single-usage dictionary) for next compressed frame.
+ *  A prefix is **only used once**. Tables are discarded at end of frame (ZSTD_e_end).
+ *  Decompression will need same prefix to properly regenerate data.
+ *  Compressing with a prefix is similar in outcome as performing a diff and compressing it,
+ *  but performs much faster, especially during decompression (compression speed is tunable with compression level).
+ * @result : 0, or an error code (which can be tested with ZSTD_isError()).
+ *  Special: Adding any prefix (including NULL) invalidates any previous prefix or dictionary
+ *  Note 1 : Prefix buffer is referenced. It **must** outlive compression.
+ *           Its content must remain unmodified during compression.
+ *  Note 2 : If the intention is to diff some large src data blob with some prior version of itself,
+ *           ensure that the window size is large enough to contain the entire source.
+ *           See ZSTD_c_windowLog.
+ *  Note 3 : Referencing a prefix involves building tables, which are dependent on compression parameters.
+ *           It's a CPU consuming operation, with non-negligible impact on latency.
+ *           If there is a need to use the same prefix multiple times, consider loadDictionary instead.
+ *  Note 4 : By default, the prefix is interpreted as raw content (ZSTD_dct_rawContent).
+ *           Use experimental ZSTD_CCtx_refPrefix_advanced() to alter dictionary interpretation. */
+ZSTDLIB_API size_t ZSTD_CCtx_refPrefix(ZSTD_CCtx* cctx,
+                                 const void* prefix, size_t prefixSize);
+
+/*! ZSTD_DCtx_loadDictionary() :
+ *  Create an internal DDict from dict buffer,
+ *  to be used to decompress next frames.
+ *  The dictionary remains valid for all future frames, until explicitly invalidated.
+ * @result : 0, or an error code (which can be tested with ZSTD_isError()).
+ *  Special : Adding a NULL (or 0-size) dictionary invalidates any previous dictionary,
+ *            meaning "return to no-dictionary mode".
+ *  Note 1 : Loading a dictionary involves building tables,
+ *           which has a non-negligible impact on CPU usage and latency.
+ *           It's recommended to "load once, use many times", to amortize the cost
+ *  Note 2 :`dict` content will be copied internally, so `dict` can be released after loading.
+ *           Use ZSTD_DCtx_loadDictionary_byReference() to reference dictionary content instead.
+ *  Note 3 : Use ZSTD_DCtx_loadDictionary_advanced() to take control of
+ *           how dictionary content is loaded and interpreted.
+ */
+ZSTDLIB_API size_t ZSTD_DCtx_loadDictionary(ZSTD_DCtx* dctx, const void* dict, size_t dictSize);
+
+/*! ZSTD_DCtx_refDDict() :
+ *  Reference a prepared dictionary, to be used to decompress next frames.
+ *  The dictionary remains active for decompression of future frames using same DCtx.
+ *
+ *  If called with ZSTD_d_refMultipleDDicts enabled, repeated calls of this function
+ *  will store the DDict references in a table, and the DDict used for decompression
+ *  will be determined at decompression time, as per the dict ID in the frame.
+ *  The memory for the table is allocated on the first call to refDDict, and can be
+ *  freed with ZSTD_freeDCtx().
+ *
+ * @result : 0, or an error code (which can be tested with ZSTD_isError()).
+ *  Note 1 : Currently, only one dictionary can be managed.
+ *           Referencing a new dictionary effectively "discards" any previous one.
+ *  Special: referencing a NULL DDict means "return to no-dictionary mode".
+ *  Note 2 : DDict is just referenced, its lifetime must outlive its usage from DCtx.
+ */
+ZSTDLIB_API size_t ZSTD_DCtx_refDDict(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict);
+
+/*! ZSTD_DCtx_refPrefix() :
+ *  Reference a prefix (single-usage dictionary) to decompress next frame.
+ *  This is the reverse operation of ZSTD_CCtx_refPrefix(),
+ *  and must use the same prefix as the one used during compression.
+ *  Prefix is **only used once**. Reference is discarded at end of frame.
+ *  End of frame is reached when ZSTD_decompressStream() returns 0.
+ * @result : 0, or an error code (which can be tested with ZSTD_isError()).
+ *  Note 1 : Adding any prefix (including NULL) invalidates any previously set prefix or dictionary
+ *  Note 2 : Prefix buffer is referenced. It **must** outlive decompression.
+ *           Prefix buffer must remain unmodified up to the end of frame,
+ *           reached when ZSTD_decompressStream() returns 0.
+ *  Note 3 : By default, the prefix is treated as raw content (ZSTD_dct_rawContent).
+ *           Use ZSTD_CCtx_refPrefix_advanced() to alter dictMode (Experimental section)
+ *  Note 4 : Referencing a raw content prefix has almost no cpu nor memory cost.
+ *           A full dictionary is more costly, as it requires building tables.
+ */
+ZSTDLIB_API size_t ZSTD_DCtx_refPrefix(ZSTD_DCtx* dctx,
+                                 const void* prefix, size_t prefixSize);
+
+/* ===   Memory management   === */
+
+/*! ZSTD_sizeof_*() :
+ *  These functions give the _current_ memory usage of selected object.
+ *  Note that object memory usage can evolve (increase or decrease) over time. */
+ZSTDLIB_API size_t ZSTD_sizeof_CCtx(const ZSTD_CCtx* cctx);
+ZSTDLIB_API size_t ZSTD_sizeof_DCtx(const ZSTD_DCtx* dctx);
+ZSTDLIB_API size_t ZSTD_sizeof_CStream(const ZSTD_CStream* zcs);
+ZSTDLIB_API size_t ZSTD_sizeof_DStream(const ZSTD_DStream* zds);
+ZSTDLIB_API size_t ZSTD_sizeof_CDict(const ZSTD_CDict* cdict);
+ZSTDLIB_API size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict);
+
+#endif  /* ZSTD_H_235446 */
+
+
+/* **************************************************************************************
+ *   ADVANCED AND EXPERIMENTAL FUNCTIONS
+ ****************************************************************************************
+ * The definitions in the following section are considered experimental.
+ * They are provided for advanced scenarios.
+ * They should never be used with a dynamic library, as prototypes may change in the future.
+ * Use them only in association with static linking.
+ * ***************************************************************************************/
+
+#if !defined(ZSTD_H_ZSTD_STATIC_LINKING_ONLY)
+#define ZSTD_H_ZSTD_STATIC_LINKING_ONLY
+
+/* **************************************************************************************
+ *   experimental API (static linking only)
+ ****************************************************************************************
+ * The following symbols and constants
+ * are not planned to join "stable API" status in the near future.
+ * They can still change in future versions.
+ * Some of them are planned to remain in the static_only section indefinitely.
+ * Some of them might be removed in the future (especially when redundant with existing stable functions)
+ * ***************************************************************************************/
+
+#define ZSTD_FRAMEHEADERSIZE_PREFIX(format) ((format) == ZSTD_f_zstd1 ? 5 : 1)   /* minimum input size required to query frame header size */
+#define ZSTD_FRAMEHEADERSIZE_MIN(format)    ((format) == ZSTD_f_zstd1 ? 6 : 2)
+#define ZSTD_FRAMEHEADERSIZE_MAX   18   /* can be useful for static allocation */
+#define ZSTD_SKIPPABLEHEADERSIZE    8
+
+/* compression parameter bounds */
+#define ZSTD_WINDOWLOG_MAX_32    30
+#define ZSTD_WINDOWLOG_MAX_64    31
+#define ZSTD_WINDOWLOG_MAX     ((int)(sizeof(size_t) == 4 ? ZSTD_WINDOWLOG_MAX_32 : ZSTD_WINDOWLOG_MAX_64))
+#define ZSTD_WINDOWLOG_MIN       10
+#define ZSTD_HASHLOG_MAX       ((ZSTD_WINDOWLOG_MAX < 30) ? ZSTD_WINDOWLOG_MAX : 30)
+#define ZSTD_HASHLOG_MIN          6
+#define ZSTD_CHAINLOG_MAX_32     29
+#define ZSTD_CHAINLOG_MAX_64     30
+#define ZSTD_CHAINLOG_MAX      ((int)(sizeof(size_t) == 4 ? ZSTD_CHAINLOG_MAX_32 : ZSTD_CHAINLOG_MAX_64))
+#define ZSTD_CHAINLOG_MIN        ZSTD_HASHLOG_MIN
+#define ZSTD_SEARCHLOG_MAX      (ZSTD_WINDOWLOG_MAX-1)
+#define ZSTD_SEARCHLOG_MIN        1
+#define ZSTD_MINMATCH_MAX         7   /* only for ZSTD_fast, other strategies are limited to 6 */
+#define ZSTD_MINMATCH_MIN         3   /* only for ZSTD_btopt+, faster strategies are limited to 4 */
+#define ZSTD_TARGETLENGTH_MAX    ZSTD_BLOCKSIZE_MAX
+#define ZSTD_TARGETLENGTH_MIN     0   /* note : comparing this constant to an unsigned results in a tautological test */
+#define ZSTD_STRATEGY_MIN        ZSTD_fast
+#define ZSTD_STRATEGY_MAX        ZSTD_btultra2
+
+
+#define ZSTD_OVERLAPLOG_MIN       0
+#define ZSTD_OVERLAPLOG_MAX       9
+
+#define ZSTD_WINDOWLOG_LIMIT_DEFAULT 27   /* by default, the streaming decoder will refuse any frame
+                                           * requiring larger than (1<<ZSTD_WINDOWLOG_LIMIT_DEFAULT) window size,
+                                           * to preserve host's memory from unreasonable requirements.
+                                           * This limit can be overridden using ZSTD_DCtx_setParameter(,ZSTD_d_windowLogMax,).
+                                           * The limit does not apply for one-pass decoders (such as ZSTD_decompress()), since no additional memory is allocated */
+
+
+/* LDM parameter bounds */
+#define ZSTD_LDM_HASHLOG_MIN      ZSTD_HASHLOG_MIN
+#define ZSTD_LDM_HASHLOG_MAX      ZSTD_HASHLOG_MAX
+#define ZSTD_LDM_MINMATCH_MIN        4
+#define ZSTD_LDM_MINMATCH_MAX     4096
+#define ZSTD_LDM_BUCKETSIZELOG_MIN   1
+#define ZSTD_LDM_BUCKETSIZELOG_MAX   8
+#define ZSTD_LDM_HASHRATELOG_MIN     0
+#define ZSTD_LDM_HASHRATELOG_MAX (ZSTD_WINDOWLOG_MAX - ZSTD_HASHLOG_MIN)
+
+/* Advanced parameter bounds */
+#define ZSTD_TARGETCBLOCKSIZE_MIN   64
+#define ZSTD_TARGETCBLOCKSIZE_MAX   ZSTD_BLOCKSIZE_MAX
+#define ZSTD_SRCSIZEHINT_MIN        0
+#define ZSTD_SRCSIZEHINT_MAX        INT_MAX
+
+/* internal */
+#define ZSTD_HASHLOG3_MAX           17
+
+
+/* ---  Advanced types  --- */
+
+typedef struct ZSTD_CCtx_params_s ZSTD_CCtx_params;
+
+typedef struct {
+    unsigned int offset;      /* The offset of the match. (NOT the same as the offset code)
+                               * If offset == 0 and matchLength == 0, this sequence represents the last
+                               * literals in the block of litLength size.
+                               */
+
+    unsigned int litLength;   /* Literal length of the sequence. */
+    unsigned int matchLength; /* Match length of the sequence. */
+
+                              /* Note: Users of this API may provide a sequence with matchLength == litLength == offset == 0.
+                               * In this case, we will treat the sequence as a marker for a block boundary.
+                               */
+
+    unsigned int rep;         /* Represents which repeat offset is represented by the field 'offset'.
+                               * Ranges from [0, 3].
+                               *
+                               * Repeat offsets are essentially previous offsets from previous sequences sorted in
+                               * recency order. For more detail, see doc/zstd_compression_format.md
+                               *
+                               * If rep == 0, then 'offset' does not contain a repeat offset.
+                               * If rep > 0:
+                               *  If litLength != 0:
+                               *      rep == 1 --> offset == repeat_offset_1
+                               *      rep == 2 --> offset == repeat_offset_2
+                               *      rep == 3 --> offset == repeat_offset_3
+                               *  If litLength == 0:
+                               *      rep == 1 --> offset == repeat_offset_2
+                               *      rep == 2 --> offset == repeat_offset_3
+                               *      rep == 3 --> offset == repeat_offset_1 - 1
+                               *
+                               * Note: This field is optional. ZSTD_generateSequences() will calculate the value of
+                               * 'rep', but repeat offsets do not necessarily need to be calculated from an external
+                               * sequence provider's perspective. For example, ZSTD_compressSequences() does not
+                               * use this 'rep' field at all (as of now).
+                               */
+} ZSTD_Sequence;
+
+typedef struct {
+    unsigned windowLog;       /*< largest match distance : larger == more compression, more memory needed during decompression */
+    unsigned chainLog;        /*< fully searched segment : larger == more compression, slower, more memory (useless for fast) */
+    unsigned hashLog;         /*< dispatch table : larger == faster, more memory */
+    unsigned searchLog;       /*< nb of searches : larger == more compression, slower */
+    unsigned minMatch;        /*< match length searched : larger == faster decompression, sometimes less compression */
+    unsigned targetLength;    /*< acceptable match size for optimal parser (only) : larger == more compression, slower */
+    ZSTD_strategy strategy;   /*< see ZSTD_strategy definition above */
+} ZSTD_compressionParameters;
+
+typedef struct {
+    int contentSizeFlag; /*< 1: content size will be in frame header (when known) */
+    int checksumFlag;    /*< 1: generate a 32-bits checksum using XXH64 algorithm at end of frame, for error detection */
+    int noDictIDFlag;    /*< 1: no dictID will be saved into frame header (dictID is only useful for dictionary compression) */
+} ZSTD_frameParameters;
+
+typedef struct {
+    ZSTD_compressionParameters cParams;
+    ZSTD_frameParameters fParams;
+} ZSTD_parameters;
+
+typedef enum {
+    ZSTD_dct_auto = 0,       /* dictionary is "full" when starting with ZSTD_MAGIC_DICTIONARY, otherwise it is "rawContent" */
+    ZSTD_dct_rawContent = 1, /* ensures dictionary is always loaded as rawContent, even if it starts with ZSTD_MAGIC_DICTIONARY */
+    ZSTD_dct_fullDict = 2    /* refuses to load a dictionary if it does not respect Zstandard's specification, starting with ZSTD_MAGIC_DICTIONARY */
+} ZSTD_dictContentType_e;
+
+typedef enum {
+    ZSTD_dlm_byCopy = 0,  /*< Copy dictionary content internally */
+    ZSTD_dlm_byRef = 1    /*< Reference dictionary content -- the dictionary buffer must outlive its users. */
+} ZSTD_dictLoadMethod_e;
+
+typedef enum {
+    ZSTD_f_zstd1 = 0,           /* zstd frame format, specified in zstd_compression_format.md (default) */
+    ZSTD_f_zstd1_magicless = 1  /* Variant of zstd frame format, without initial 4-bytes magic number.
+                                 * Useful to save 4 bytes per generated frame.
+                                 * Decoder cannot recognise automatically this format, requiring this instruction. */
+} ZSTD_format_e;
+
+typedef enum {
+    /* Note: this enum controls ZSTD_d_forceIgnoreChecksum */
+    ZSTD_d_validateChecksum = 0,
+    ZSTD_d_ignoreChecksum = 1
+} ZSTD_forceIgnoreChecksum_e;
+
+typedef enum {
+    /* Note: this enum controls ZSTD_d_refMultipleDDicts */
+    ZSTD_rmd_refSingleDDict = 0,
+    ZSTD_rmd_refMultipleDDicts = 1
+} ZSTD_refMultipleDDicts_e;
+
+typedef enum {
+    /* Note: this enum and the behavior it controls are effectively internal
+     * implementation details of the compressor. They are expected to continue
+     * to evolve and should be considered only in the context of extremely
+     * advanced performance tuning.
+     *
+     * Zstd currently supports the use of a CDict in three ways:
+     *
+     * - The contents of the CDict can be copied into the working context. This
+     *   means that the compression can search both the dictionary and input
+     *   while operating on a single set of internal tables. This makes
+     *   the compression faster per-byte of input. However, the initial copy of
+     *   the CDict's tables incurs a fixed cost at the beginning of the
+     *   compression. For small compressions (< 8 KB), that copy can dominate
+     *   the cost of the compression.
+     *
+     * - The CDict's tables can be used in-place. In this model, compression is
+     *   slower per input byte, because the compressor has to search two sets of
+     *   tables. However, this model incurs no start-up cost (as long as the
+     *   working context's tables can be reused). For small inputs, this can be
+     *   faster than copying the CDict's tables.
+     *
+     * - The CDict's tables are not used at all, and instead we use the working
+     *   context alone to reload the dictionary and use params based on the source
+     *   size. See ZSTD_compress_insertDictionary() and ZSTD_compress_usingDict().
+     *   This method is effective when the dictionary sizes are very small relative
+     *   to the input size, and the input size is fairly large to begin with.
+     *
+     * Zstd has a simple internal heuristic that selects which strategy to use
+     * at the beginning of a compression. However, if experimentation shows that
+     * Zstd is making poor choices, it is possible to override that choice with
+     * this enum.
+     */
+    ZSTD_dictDefaultAttach = 0, /* Use the default heuristic. */
+    ZSTD_dictForceAttach   = 1, /* Never copy the dictionary. */
+    ZSTD_dictForceCopy     = 2, /* Always copy the dictionary. */
+    ZSTD_dictForceLoad     = 3  /* Always reload the dictionary */
+} ZSTD_dictAttachPref_e;
+
+typedef enum {
+  ZSTD_lcm_auto = 0,          /*< Automatically determine the compression mode based on the compression level.
+                               *   Negative compression levels will be uncompressed, and positive compression
+                               *   levels will be compressed. */
+  ZSTD_lcm_huffman = 1,       /*< Always attempt Huffman compression. Uncompressed literals will still be
+                               *   emitted if Huffman compression is not profitable. */
+  ZSTD_lcm_uncompressed = 2   /*< Always emit uncompressed literals. */
+} ZSTD_literalCompressionMode_e;
+
+
+/* *************************************
+*  Frame size functions
+***************************************/
+
+/*! ZSTD_findDecompressedSize() :
+ *  `src` should point to the start of a series of ZSTD encoded and/or skippable frames
+ *  `srcSize` must be the _exact_ size of this series
+ *       (i.e. there should be a frame boundary at `src + srcSize`)
+ *  @return : - decompressed size of all data in all successive frames
+ *            - if the decompressed size cannot be determined: ZSTD_CONTENTSIZE_UNKNOWN
+ *            - if an error occurred: ZSTD_CONTENTSIZE_ERROR
+ *
+ *   note 1 : decompressed size is an optional field, that may not be present, especially in streaming mode.
+ *            When `return==ZSTD_CONTENTSIZE_UNKNOWN`, data to decompress could be any size.
+ *            In which case, it's necessary to use streaming mode to decompress data.
+ *   note 2 : decompressed size is always present when compression is done with ZSTD_compress()
+ *   note 3 : decompressed size can be very large (64-bits value),
+ *            potentially larger than what local system can handle as a single memory segment.
+ *            In which case, it's necessary to use streaming mode to decompress data.
+ *   note 4 : If source is untrusted, decompressed size could be wrong or intentionally modified.
+ *            Always ensure result fits within application's authorized limits.
+ *            Each application can set its own limits.
+ *   note 5 : ZSTD_findDecompressedSize handles multiple frames, and so it must traverse the input to
+ *            read each contained frame header.  This is fast as most of the data is skipped,
+ *            however it does mean that all frame data must be present and valid. */
+ZSTDLIB_API unsigned long long ZSTD_findDecompressedSize(const void* src, size_t srcSize);
+
+/*! ZSTD_decompressBound() :
+ *  `src` should point to the start of a series of ZSTD encoded and/or skippable frames
+ *  `srcSize` must be the _exact_ size of this series
+ *       (i.e. there should be a frame boundary at `src + srcSize`)
+ *  @return : - upper-bound for the decompressed size of all data in all successive frames
+ *            - if an error occurred: ZSTD_CONTENTSIZE_ERROR
+ *
+ *  note 1  : an error can occur if `src` contains an invalid or incorrectly formatted frame.
+ *  note 2  : the upper-bound is exact when the decompressed size field is available in every ZSTD encoded frame of `src`.
+ *            in this case, `ZSTD_findDecompressedSize` and `ZSTD_decompressBound` return the same value.
+ *  note 3  : when the decompressed size field isn't available, the upper-bound for that frame is calculated by:
+ *              upper-bound = # blocks * min(128 KB, Window_Size)
+ */
+ZSTDLIB_API unsigned long long ZSTD_decompressBound(const void* src, size_t srcSize);
+
+/*! ZSTD_frameHeaderSize() :
+ *  srcSize must be >= ZSTD_FRAMEHEADERSIZE_PREFIX.
+ * @return : size of the Frame Header,
+ *           or an error code (if srcSize is too small) */
+ZSTDLIB_API size_t ZSTD_frameHeaderSize(const void* src, size_t srcSize);
+
+typedef enum {
+  ZSTD_sf_noBlockDelimiters = 0,         /* Representation of ZSTD_Sequence has no block delimiters, sequences only */
+  ZSTD_sf_explicitBlockDelimiters = 1    /* Representation of ZSTD_Sequence contains explicit block delimiters */
+} ZSTD_sequenceFormat_e;
+
+/*! ZSTD_generateSequences() :
+ * Generate sequences using ZSTD_compress2, given a source buffer.
+ *
+ * Each block will end with a dummy sequence
+ * with offset == 0, matchLength == 0, and litLength == length of last literals.
+ * litLength may be == 0, and if so, then the sequence of (of: 0 ml: 0 ll: 0)
+ * simply acts as a block delimiter.
+ *
+ * zc can be used to insert custom compression params.
+ * This function invokes ZSTD_compress2
+ *
+ * The output of this function can be fed into ZSTD_compressSequences() with CCtx
+ * setting of ZSTD_c_blockDelimiters as ZSTD_sf_explicitBlockDelimiters
+ * @return : number of sequences generated
+ */
+
+ZSTDLIB_API size_t ZSTD_generateSequences(ZSTD_CCtx* zc, ZSTD_Sequence* outSeqs,
+                                          size_t outSeqsSize, const void* src, size_t srcSize);
+
+/*! ZSTD_mergeBlockDelimiters() :
+ * Given an array of ZSTD_Sequence, remove all sequences that represent block delimiters/last literals
+ * by merging them into into the literals of the next sequence.
+ *
+ * As such, the final generated result has no explicit representation of block boundaries,
+ * and the final last literals segment is not represented in the sequences.
+ *
+ * The output of this function can be fed into ZSTD_compressSequences() with CCtx
+ * setting of ZSTD_c_blockDelimiters as ZSTD_sf_noBlockDelimiters
+ * @return : number of sequences left after merging
+ */
+ZSTDLIB_API size_t ZSTD_mergeBlockDelimiters(ZSTD_Sequence* sequences, size_t seqsSize);
+
+/*! ZSTD_compressSequences() :
+ * Compress an array of ZSTD_Sequence, generated from the original source buffer, into dst.
+ * If a dictionary is included, then the cctx should reference the dict. (see: ZSTD_CCtx_refCDict(), ZSTD_CCtx_loadDictionary(), etc.)
+ * The entire source is compressed into a single frame.
+ *
+ * The compression behavior changes based on cctx params. In particular:
+ *    If ZSTD_c_blockDelimiters == ZSTD_sf_noBlockDelimiters, the array of ZSTD_Sequence is expected to contain
+ *    no block delimiters (defined in ZSTD_Sequence). Block boundaries are roughly determined based on
+ *    the block size derived from the cctx, and sequences may be split. This is the default setting.
+ *
+ *    If ZSTD_c_blockDelimiters == ZSTD_sf_explicitBlockDelimiters, the array of ZSTD_Sequence is expected to contain
+ *    block delimiters (defined in ZSTD_Sequence). Behavior is undefined if no block delimiters are provided.
+ *
+ *    If ZSTD_c_validateSequences == 0, this function will blindly accept the sequences provided. Invalid sequences cause undefined
+ *    behavior. If ZSTD_c_validateSequences == 1, then if sequence is invalid (see doc/zstd_compression_format.md for
+ *    specifics regarding offset/matchlength requirements) then the function will bail out and return an error.
+ *
+ *    In addition to the two adjustable experimental params, there are other important cctx params.
+ *    - ZSTD_c_minMatch MUST be set as less than or equal to the smallest match generated by the match finder. It has a minimum value of ZSTD_MINMATCH_MIN.
+ *    - ZSTD_c_compressionLevel accordingly adjusts the strength of the entropy coder, as it would in typical compression.
+ *    - ZSTD_c_windowLog affects offset validation: this function will return an error at higher debug levels if a provided offset
+ *      is larger than what the spec allows for a given window log and dictionary (if present). See: doc/zstd_compression_format.md
+ *
+ * Note: Repcodes are, as of now, always re-calculated within this function, so ZSTD_Sequence::rep is unused.
+ * Note 2: Once we integrate ability to ingest repcodes, the explicit block delims mode must respect those repcodes exactly,
+ *         and cannot emit an RLE block that disagrees with the repcode history
+ * @return : final compressed size or a ZSTD error.
+ */
+ZSTDLIB_API size_t ZSTD_compressSequences(ZSTD_CCtx* const cctx, void* dst, size_t dstSize,
+                                  const ZSTD_Sequence* inSeqs, size_t inSeqsSize,
+                                  const void* src, size_t srcSize);
+
+
+/*! ZSTD_writeSkippableFrame() :
+ * Generates a zstd skippable frame containing data given by src, and writes it to dst buffer.
+ *
+ * Skippable frames begin with a a 4-byte magic number. There are 16 possible choices of magic number,
+ * ranging from ZSTD_MAGIC_SKIPPABLE_START to ZSTD_MAGIC_SKIPPABLE_START+15.
+ * As such, the parameter magicVariant controls the exact skippable frame magic number variant used, so
+ * the magic number used will be ZSTD_MAGIC_SKIPPABLE_START + magicVariant.
+ *
+ * Returns an error if destination buffer is not large enough, if the source size is not representable
+ * with a 4-byte unsigned int, or if the parameter magicVariant is greater than 15 (and therefore invalid).
+ *
+ * @return : number of bytes written or a ZSTD error.
+ */
+ZSTDLIB_API size_t ZSTD_writeSkippableFrame(void* dst, size_t dstCapacity,
+                                            const void* src, size_t srcSize, unsigned magicVariant);
+
+
+/* *************************************
+*  Memory management
+***************************************/
+
+/*! ZSTD_estimate*() :
+ *  These functions make it possible to estimate memory usage
+ *  of a future {D,C}Ctx, before its creation.
+ *
+ *  ZSTD_estimateCCtxSize() will provide a memory budget large enough
+ *  for any compression level up to selected one.
+ *  Note : Unlike ZSTD_estimateCStreamSize*(), this estimate
+ *         does not include space for a window buffer.
+ *         Therefore, the estimation is only guaranteed for single-shot compressions, not streaming.
+ *  The estimate will assume the input may be arbitrarily large,
+ *  which is the worst case.
+ *
+ *  When srcSize can be bound by a known and rather "small" value,
+ *  this fact can be used to provide a tighter estimation
+ *  because the CCtx compression context will need less memory.
+ *  This tighter estimation can be provided by more advanced functions
+ *  ZSTD_estimateCCtxSize_usingCParams(), which can be used in tandem with ZSTD_getCParams(),
+ *  and ZSTD_estimateCCtxSize_usingCCtxParams(), which can be used in tandem with ZSTD_CCtxParams_setParameter().
+ *  Both can be used to estimate memory using custom compression parameters and arbitrary srcSize limits.
+ *
+ *  Note 2 : only single-threaded compression is supported.
+ *  ZSTD_estimateCCtxSize_usingCCtxParams() will return an error code if ZSTD_c_nbWorkers is >= 1.
+ */
+ZSTDLIB_API size_t ZSTD_estimateCCtxSize(int compressionLevel);
+ZSTDLIB_API size_t ZSTD_estimateCCtxSize_usingCParams(ZSTD_compressionParameters cParams);
+ZSTDLIB_API size_t ZSTD_estimateCCtxSize_usingCCtxParams(const ZSTD_CCtx_params* params);
+ZSTDLIB_API size_t ZSTD_estimateDCtxSize(void);
+
+/*! ZSTD_estimateCStreamSize() :
+ *  ZSTD_estimateCStreamSize() will provide a budget large enough for any compression level up to selected one.
+ *  It will also consider src size to be arbitrarily "large", which is worst case.
+ *  If srcSize is known to always be small, ZSTD_estimateCStreamSize_usingCParams() can provide a tighter estimation.
+ *  ZSTD_estimateCStreamSize_usingCParams() can be used in tandem with ZSTD_getCParams() to create cParams from compressionLevel.
+ *  ZSTD_estimateCStreamSize_usingCCtxParams() can be used in tandem with ZSTD_CCtxParams_setParameter(). Only single-threaded compression is supported. This function will return an error code if ZSTD_c_nbWorkers is >= 1.
+ *  Note : CStream size estimation is only correct for single-threaded compression.
+ *  ZSTD_DStream memory budget depends on window Size.
+ *  This information can be passed manually, using ZSTD_estimateDStreamSize,
+ *  or deducted from a valid frame Header, using ZSTD_estimateDStreamSize_fromFrame();
+ *  Note : if streaming is init with function ZSTD_init?Stream_usingDict(),
+ *         an internal ?Dict will be created, which additional size is not estimated here.
+ *         In this case, get total size by adding ZSTD_estimate?DictSize */
+ZSTDLIB_API size_t ZSTD_estimateCStreamSize(int compressionLevel);
+ZSTDLIB_API size_t ZSTD_estimateCStreamSize_usingCParams(ZSTD_compressionParameters cParams);
+ZSTDLIB_API size_t ZSTD_estimateCStreamSize_usingCCtxParams(const ZSTD_CCtx_params* params);
+ZSTDLIB_API size_t ZSTD_estimateDStreamSize(size_t windowSize);
+ZSTDLIB_API size_t ZSTD_estimateDStreamSize_fromFrame(const void* src, size_t srcSize);
+
+/*! ZSTD_estimate?DictSize() :
+ *  ZSTD_estimateCDictSize() will bet that src size is relatively "small", and content is copied, like ZSTD_createCDict().
+ *  ZSTD_estimateCDictSize_advanced() makes it possible to control compression parameters precisely, like ZSTD_createCDict_advanced().
+ *  Note : dictionaries created by reference (`ZSTD_dlm_byRef`) are logically smaller.
+ */
+ZSTDLIB_API size_t ZSTD_estimateCDictSize(size_t dictSize, int compressionLevel);
+ZSTDLIB_API size_t ZSTD_estimateCDictSize_advanced(size_t dictSize, ZSTD_compressionParameters cParams, ZSTD_dictLoadMethod_e dictLoadMethod);
+ZSTDLIB_API size_t ZSTD_estimateDDictSize(size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod);
+
+/*! ZSTD_initStatic*() :
+ *  Initialize an object using a pre-allocated fixed-size buffer.
+ *  workspace: The memory area to emplace the object into.
+ *             Provided pointer *must be 8-bytes aligned*.
+ *             Buffer must outlive object.
+ *  workspaceSize: Use ZSTD_estimate*Size() to determine
+ *                 how large workspace must be to support target scenario.
+ * @return : pointer to object (same address as workspace, just different type),
+ *           or NULL if error (size too small, incorrect alignment, etc.)
+ *  Note : zstd will never resize nor malloc() when using a static buffer.
+ *         If the object requires more memory than available,
+ *         zstd will just error out (typically ZSTD_error_memory_allocation).
+ *  Note 2 : there is no corresponding "free" function.
+ *           Since workspace is allocated externally, it must be freed externally too.
+ *  Note 3 : cParams : use ZSTD_getCParams() to convert a compression level
+ *           into its associated cParams.
+ *  Limitation 1 : currently not compatible with internal dictionary creation, triggered by
+ *                 ZSTD_CCtx_loadDictionary(), ZSTD_initCStream_usingDict() or ZSTD_initDStream_usingDict().
+ *  Limitation 2 : static cctx currently not compatible with multi-threading.
+ *  Limitation 3 : static dctx is incompatible with legacy support.
+ */
+ZSTDLIB_API ZSTD_CCtx*    ZSTD_initStaticCCtx(void* workspace, size_t workspaceSize);
+ZSTDLIB_API ZSTD_CStream* ZSTD_initStaticCStream(void* workspace, size_t workspaceSize);    /*< same as ZSTD_initStaticCCtx() */
+
+ZSTDLIB_API ZSTD_DCtx*    ZSTD_initStaticDCtx(void* workspace, size_t workspaceSize);
+ZSTDLIB_API ZSTD_DStream* ZSTD_initStaticDStream(void* workspace, size_t workspaceSize);    /*< same as ZSTD_initStaticDCtx() */
+
+ZSTDLIB_API const ZSTD_CDict* ZSTD_initStaticCDict(
+                                        void* workspace, size_t workspaceSize,
+                                        const void* dict, size_t dictSize,
+                                        ZSTD_dictLoadMethod_e dictLoadMethod,
+                                        ZSTD_dictContentType_e dictContentType,
+                                        ZSTD_compressionParameters cParams);
+
+ZSTDLIB_API const ZSTD_DDict* ZSTD_initStaticDDict(
+                                        void* workspace, size_t workspaceSize,
+                                        const void* dict, size_t dictSize,
+                                        ZSTD_dictLoadMethod_e dictLoadMethod,
+                                        ZSTD_dictContentType_e dictContentType);
+
+
+/*! Custom memory allocation :
+ *  These prototypes make it possible to pass your own allocation/free functions.
+ *  ZSTD_customMem is provided at creation time, using ZSTD_create*_advanced() variants listed below.
+ *  All allocation/free operations will be completed using these custom variants instead of regular <stdlib.h> ones.
+ */
+typedef void* (*ZSTD_allocFunction) (void* opaque, size_t size);
+typedef void  (*ZSTD_freeFunction) (void* opaque, void* address);
+typedef struct { ZSTD_allocFunction customAlloc; ZSTD_freeFunction customFree; void* opaque; } ZSTD_customMem;
+static
+__attribute__((__unused__))
+ZSTD_customMem const ZSTD_defaultCMem = { NULL, NULL, NULL };  /*< this constant defers to stdlib's functions */
+
+ZSTDLIB_API ZSTD_CCtx*    ZSTD_createCCtx_advanced(ZSTD_customMem customMem);
+ZSTDLIB_API ZSTD_CStream* ZSTD_createCStream_advanced(ZSTD_customMem customMem);
+ZSTDLIB_API ZSTD_DCtx*    ZSTD_createDCtx_advanced(ZSTD_customMem customMem);
+ZSTDLIB_API ZSTD_DStream* ZSTD_createDStream_advanced(ZSTD_customMem customMem);
+
+ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_advanced(const void* dict, size_t dictSize,
+                                                  ZSTD_dictLoadMethod_e dictLoadMethod,
+                                                  ZSTD_dictContentType_e dictContentType,
+                                                  ZSTD_compressionParameters cParams,
+                                                  ZSTD_customMem customMem);
+
+/* ! Thread pool :
+ * These prototypes make it possible to share a thread pool among multiple compression contexts.
+ * This can limit resources for applications with multiple threads where each one uses
+ * a threaded compression mode (via ZSTD_c_nbWorkers parameter).
+ * ZSTD_createThreadPool creates a new thread pool with a given number of threads.
+ * Note that the lifetime of such pool must exist while being used.
+ * ZSTD_CCtx_refThreadPool assigns a thread pool to a context (use NULL argument value
+ * to use an internal thread pool).
+ * ZSTD_freeThreadPool frees a thread pool, accepts NULL pointer.
+ */
+typedef struct POOL_ctx_s ZSTD_threadPool;
+ZSTDLIB_API ZSTD_threadPool* ZSTD_createThreadPool(size_t numThreads);
+ZSTDLIB_API void ZSTD_freeThreadPool (ZSTD_threadPool* pool);  /* accept NULL pointer */
+ZSTDLIB_API size_t ZSTD_CCtx_refThreadPool(ZSTD_CCtx* cctx, ZSTD_threadPool* pool);
+
+
+/*
+ * This API is temporary and is expected to change or disappear in the future!
+ */
+ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_advanced2(
+    const void* dict, size_t dictSize,
+    ZSTD_dictLoadMethod_e dictLoadMethod,
+    ZSTD_dictContentType_e dictContentType,
+    const ZSTD_CCtx_params* cctxParams,
+    ZSTD_customMem customMem);
+
+ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict_advanced(
+    const void* dict, size_t dictSize,
+    ZSTD_dictLoadMethod_e dictLoadMethod,
+    ZSTD_dictContentType_e dictContentType,
+    ZSTD_customMem customMem);
+
+
+/* *************************************
+*  Advanced compression functions
+***************************************/
+
+/*! ZSTD_createCDict_byReference() :
+ *  Create a digested dictionary for compression
+ *  Dictionary content is just referenced, not duplicated.
+ *  As a consequence, `dictBuffer` **must** outlive CDict,
+ *  and its content must remain unmodified throughout the lifetime of CDict.
+ *  note: equivalent to ZSTD_createCDict_advanced(), with dictLoadMethod==ZSTD_dlm_byRef */
+ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_byReference(const void* dictBuffer, size_t dictSize, int compressionLevel);
+
+/*! ZSTD_getDictID_fromCDict() :
+ *  Provides the dictID of the dictionary loaded into `cdict`.
+ *  If @return == 0, the dictionary is not conformant to Zstandard specification, or empty.
+ *  Non-conformant dictionaries can still be loaded, but as content-only dictionaries. */
+ZSTDLIB_API unsigned ZSTD_getDictID_fromCDict(const ZSTD_CDict* cdict);
+
+/*! ZSTD_getCParams() :
+ * @return ZSTD_compressionParameters structure for a selected compression level and estimated srcSize.
+ * `estimatedSrcSize` value is optional, select 0 if not known */
+ZSTDLIB_API ZSTD_compressionParameters ZSTD_getCParams(int compressionLevel, unsigned long long estimatedSrcSize, size_t dictSize);
+
+/*! ZSTD_getParams() :
+ *  same as ZSTD_getCParams(), but @return a full `ZSTD_parameters` object instead of sub-component `ZSTD_compressionParameters`.
+ *  All fields of `ZSTD_frameParameters` are set to default : contentSize=1, checksum=0, noDictID=0 */
+ZSTDLIB_API ZSTD_parameters ZSTD_getParams(int compressionLevel, unsigned long long estimatedSrcSize, size_t dictSize);
+
+/*! ZSTD_checkCParams() :
+ *  Ensure param values remain within authorized range.
+ * @return 0 on success, or an error code (can be checked with ZSTD_isError()) */
+ZSTDLIB_API size_t ZSTD_checkCParams(ZSTD_compressionParameters params);
+
+/*! ZSTD_adjustCParams() :
+ *  optimize params for a given `srcSize` and `dictSize`.
+ * `srcSize` can be unknown, in which case use ZSTD_CONTENTSIZE_UNKNOWN.
+ * `dictSize` must be `0` when there is no dictionary.
+ *  cPar can be invalid : all parameters will be clamped within valid range in the @return struct.
+ *  This function never fails (wide contract) */
+ZSTDLIB_API ZSTD_compressionParameters ZSTD_adjustCParams(ZSTD_compressionParameters cPar, unsigned long long srcSize, size_t dictSize);
+
+/*! ZSTD_compress_advanced() :
+ *  Note : this function is now DEPRECATED.
+ *         It can be replaced by ZSTD_compress2(), in combination with ZSTD_CCtx_setParameter() and other parameter setters.
+ *  This prototype will be marked as deprecated and generate compilation warning on reaching v1.5.x */
+ZSTDLIB_API size_t ZSTD_compress_advanced(ZSTD_CCtx* cctx,
+                                          void* dst, size_t dstCapacity,
+                                    const void* src, size_t srcSize,
+                                    const void* dict,size_t dictSize,
+                                          ZSTD_parameters params);
+
+/*! ZSTD_compress_usingCDict_advanced() :
+ *  Note : this function is now REDUNDANT.
+ *         It can be replaced by ZSTD_compress2(), in combination with ZSTD_CCtx_loadDictionary() and other parameter setters.
+ *  This prototype will be marked as deprecated and generate compilation warning in some future version */
+ZSTDLIB_API size_t ZSTD_compress_usingCDict_advanced(ZSTD_CCtx* cctx,
+                                              void* dst, size_t dstCapacity,
+                                        const void* src, size_t srcSize,
+                                        const ZSTD_CDict* cdict,
+                                              ZSTD_frameParameters fParams);
+
+
+/*! ZSTD_CCtx_loadDictionary_byReference() :
+ *  Same as ZSTD_CCtx_loadDictionary(), but dictionary content is referenced, instead of being copied into CCtx.
+ *  It saves some memory, but also requires that `dict` outlives its usage within `cctx` */
+ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary_byReference(ZSTD_CCtx* cctx, const void* dict, size_t dictSize);
+
+/*! ZSTD_CCtx_loadDictionary_advanced() :
+ *  Same as ZSTD_CCtx_loadDictionary(), but gives finer control over
+ *  how to load the dictionary (by copy ? by reference ?)
+ *  and how to interpret it (automatic ? force raw mode ? full mode only ?) */
+ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod, ZSTD_dictContentType_e dictContentType);
+
+/*! ZSTD_CCtx_refPrefix_advanced() :
+ *  Same as ZSTD_CCtx_refPrefix(), but gives finer control over
+ *  how to interpret prefix content (automatic ? force raw mode (default) ? full mode only ?) */
+ZSTDLIB_API size_t ZSTD_CCtx_refPrefix_advanced(ZSTD_CCtx* cctx, const void* prefix, size_t prefixSize, ZSTD_dictContentType_e dictContentType);
+
+/* ===   experimental parameters   === */
+/* these parameters can be used with ZSTD_setParameter()
+ * they are not guaranteed to remain supported in the future */
+
+ /* Enables rsyncable mode,
+  * which makes compressed files more rsync friendly
+  * by adding periodic synchronization points to the compressed data.
+  * The target average block size is ZSTD_c_jobSize / 2.
+  * It's possible to modify the job size to increase or decrease
+  * the granularity of the synchronization point.
+  * Once the jobSize is smaller than the window size,
+  * it will result in compression ratio degradation.
+  * NOTE 1: rsyncable mode only works when multithreading is enabled.
+  * NOTE 2: rsyncable performs poorly in combination with long range mode,
+  * since it will decrease the effectiveness of synchronization points,
+  * though mileage may vary.
+  * NOTE 3: Rsyncable mode limits maximum compression speed to ~400 MB/s.
+  * If the selected compression level is already running significantly slower,
+  * the overall speed won't be significantly impacted.
+  */
+ #define ZSTD_c_rsyncable ZSTD_c_experimentalParam1
+
+/* Select a compression format.
+ * The value must be of type ZSTD_format_e.
+ * See ZSTD_format_e enum definition for details */
+#define ZSTD_c_format ZSTD_c_experimentalParam2
+
+/* Force back-reference distances to remain < windowSize,
+ * even when referencing into Dictionary content (default:0) */
+#define ZSTD_c_forceMaxWindow ZSTD_c_experimentalParam3
+
+/* Controls whether the contents of a CDict
+ * are used in place, or copied into the working context.
+ * Accepts values from the ZSTD_dictAttachPref_e enum.
+ * See the comments on that enum for an explanation of the feature. */
+#define ZSTD_c_forceAttachDict ZSTD_c_experimentalParam4
+
+/* Controls how the literals are compressed (default is auto).
+ * The value must be of type ZSTD_literalCompressionMode_e.
+ * See ZSTD_literalCompressionMode_t enum definition for details.
+ */
+#define ZSTD_c_literalCompressionMode ZSTD_c_experimentalParam5
+
+/* Tries to fit compressed block size to be around targetCBlockSize.
+ * No target when targetCBlockSize == 0.
+ * There is no guarantee on compressed block size (default:0) */
+#define ZSTD_c_targetCBlockSize ZSTD_c_experimentalParam6
+
+/* User's best guess of source size.
+ * Hint is not valid when srcSizeHint == 0.
+ * There is no guarantee that hint is close to actual source size,
+ * but compression ratio may regress significantly if guess considerably underestimates */
+#define ZSTD_c_srcSizeHint ZSTD_c_experimentalParam7
+
+/* Controls whether the new and experimental "dedicated dictionary search
+ * structure" can be used. This feature is still rough around the edges, be
+ * prepared for surprising behavior!
+ *
+ * How to use it:
+ *
+ * When using a CDict, whether to use this feature or not is controlled at
+ * CDict creation, and it must be set in a CCtxParams set passed into that
+ * construction (via ZSTD_createCDict_advanced2()). A compression will then
+ * use the feature or not based on how the CDict was constructed; the value of
+ * this param, set in the CCtx, will have no effect.
+ *
+ * However, when a dictionary buffer is passed into a CCtx, such as via
+ * ZSTD_CCtx_loadDictionary(), this param can be set on the CCtx to control
+ * whether the CDict that is created internally can use the feature or not.
+ *
+ * What it does:
+ *
+ * Normally, the internal data structures of the CDict are analogous to what
+ * would be stored in a CCtx after compressing the contents of a dictionary.
+ * To an approximation, a compression using a dictionary can then use those
+ * data structures to simply continue what is effectively a streaming
+ * compression where the simulated compression of the dictionary left off.
+ * Which is to say, the search structures in the CDict are normally the same
+ * format as in the CCtx.
+ *
+ * It is possible to do better, since the CDict is not like a CCtx: the search
+ * structures are written once during CDict creation, and then are only read
+ * after that, while the search structures in the CCtx are both read and
+ * written as the compression goes along. This means we can choose a search
+ * structure for the dictionary that is read-optimized.
+ *
+ * This feature enables the use of that different structure.
+ *
+ * Note that some of the members of the ZSTD_compressionParameters struct have
+ * different semantics and constraints in the dedicated search structure. It is
+ * highly recommended that you simply set a compression level in the CCtxParams
+ * you pass into the CDict creation call, and avoid messing with the cParams
+ * directly.
+ *
+ * Effects:
+ *
+ * This will only have any effect when the selected ZSTD_strategy
+ * implementation supports this feature. Currently, that's limited to
+ * ZSTD_greedy, ZSTD_lazy, and ZSTD_lazy2.
+ *
+ * Note that this means that the CDict tables can no longer be copied into the
+ * CCtx, so the dict attachment mode ZSTD_dictForceCopy will no longer be
+ * useable. The dictionary can only be attached or reloaded.
+ *
+ * In general, you should expect compression to be faster--sometimes very much
+ * so--and CDict creation to be slightly slower. Eventually, we will probably
+ * make this mode the default.
+ */
+#define ZSTD_c_enableDedicatedDictSearch ZSTD_c_experimentalParam8
+
+/* ZSTD_c_stableInBuffer
+ * Experimental parameter.
+ * Default is 0 == disabled. Set to 1 to enable.
+ *
+ * Tells the compressor that the ZSTD_inBuffer will ALWAYS be the same
+ * between calls, except for the modifications that zstd makes to pos (the
+ * caller must not modify pos). This is checked by the compressor, and
+ * compression will fail if it ever changes. This means the only flush
+ * mode that makes sense is ZSTD_e_end, so zstd will error if ZSTD_e_end
+ * is not used. The data in the ZSTD_inBuffer in the range [src, src + pos)
+ * MUST not be modified during compression or you will get data corruption.
+ *
+ * When this flag is enabled zstd won't allocate an input window buffer,
+ * because the user guarantees it can reference the ZSTD_inBuffer until
+ * the frame is complete. But, it will still allocate an output buffer
+ * large enough to fit a block (see ZSTD_c_stableOutBuffer). This will also
+ * avoid the memcpy() from the input buffer to the input window buffer.
+ *
+ * NOTE: ZSTD_compressStream2() will error if ZSTD_e_end is not used.
+ * That means this flag cannot be used with ZSTD_compressStream().
+ *
+ * NOTE: So long as the ZSTD_inBuffer always points to valid memory, using
+ * this flag is ALWAYS memory safe, and will never access out-of-bounds
+ * memory. However, compression WILL fail if you violate the preconditions.
+ *
+ * WARNING: The data in the ZSTD_inBuffer in the range [dst, dst + pos) MUST
+ * not be modified during compression or you will get data corruption. This
+ * is because zstd needs to reference data in the ZSTD_inBuffer to find
+ * matches. Normally zstd maintains its own window buffer for this purpose,
+ * but passing this flag tells zstd to use the user provided buffer.
+ */
+#define ZSTD_c_stableInBuffer ZSTD_c_experimentalParam9
+
+/* ZSTD_c_stableOutBuffer
+ * Experimental parameter.
+ * Default is 0 == disabled. Set to 1 to enable.
+ *
+ * Tells he compressor that the ZSTD_outBuffer will not be resized between
+ * calls. Specifically: (out.size - out.pos) will never grow. This gives the
+ * compressor the freedom to say: If the compressed data doesn't fit in the
+ * output buffer then return ZSTD_error_dstSizeTooSmall. This allows us to
+ * always decompress directly into the output buffer, instead of decompressing
+ * into an internal buffer and copying to the output buffer.
+ *
+ * When this flag is enabled zstd won't allocate an output buffer, because
+ * it can write directly to the ZSTD_outBuffer. It will still allocate the
+ * input window buffer (see ZSTD_c_stableInBuffer).
+ *
+ * Zstd will check that (out.size - out.pos) never grows and return an error
+ * if it does. While not strictly necessary, this should prevent surprises.
+ */
+#define ZSTD_c_stableOutBuffer ZSTD_c_experimentalParam10
+
+/* ZSTD_c_blockDelimiters
+ * Default is 0 == ZSTD_sf_noBlockDelimiters.
+ *
+ * For use with sequence compression API: ZSTD_compressSequences().
+ *
+ * Designates whether or not the given array of ZSTD_Sequence contains block delimiters
+ * and last literals, which are defined as sequences with offset == 0 and matchLength == 0.
+ * See the definition of ZSTD_Sequence for more specifics.
+ */
+#define ZSTD_c_blockDelimiters ZSTD_c_experimentalParam11
+
+/* ZSTD_c_validateSequences
+ * Default is 0 == disabled. Set to 1 to enable sequence validation.
+ *
+ * For use with sequence compression API: ZSTD_compressSequences().
+ * Designates whether or not we validate sequences provided to ZSTD_compressSequences()
+ * during function execution.
+ *
+ * Without validation, providing a sequence that does not conform to the zstd spec will cause
+ * undefined behavior, and may produce a corrupted block.
+ *
+ * With validation enabled, a if sequence is invalid (see doc/zstd_compression_format.md for
+ * specifics regarding offset/matchlength requirements) then the function will bail out and
+ * return an error.
+ *
+ */
+#define ZSTD_c_validateSequences ZSTD_c_experimentalParam12
+
+/*! ZSTD_CCtx_getParameter() :
+ *  Get the requested compression parameter value, selected by enum ZSTD_cParameter,
+ *  and store it into int* value.
+ * @return : 0, or an error code (which can be tested with ZSTD_isError()).
+ */
+ZSTDLIB_API size_t ZSTD_CCtx_getParameter(const ZSTD_CCtx* cctx, ZSTD_cParameter param, int* value);
+
+
+/*! ZSTD_CCtx_params :
+ *  Quick howto :
+ *  - ZSTD_createCCtxParams() : Create a ZSTD_CCtx_params structure
+ *  - ZSTD_CCtxParams_setParameter() : Push parameters one by one into
+ *                                     an existing ZSTD_CCtx_params structure.
+ *                                     This is similar to
+ *                                     ZSTD_CCtx_setParameter().
+ *  - ZSTD_CCtx_setParametersUsingCCtxParams() : Apply parameters to
+ *                                    an existing CCtx.
+ *                                    These parameters will be applied to
+ *                                    all subsequent frames.
+ *  - ZSTD_compressStream2() : Do compression using the CCtx.
+ *  - ZSTD_freeCCtxParams() : Free the memory, accept NULL pointer.
+ *
+ *  This can be used with ZSTD_estimateCCtxSize_advanced_usingCCtxParams()
+ *  for static allocation of CCtx for single-threaded compression.
+ */
+ZSTDLIB_API ZSTD_CCtx_params* ZSTD_createCCtxParams(void);
+ZSTDLIB_API size_t ZSTD_freeCCtxParams(ZSTD_CCtx_params* params);  /* accept NULL pointer */
+
+/*! ZSTD_CCtxParams_reset() :
+ *  Reset params to default values.
+ */
+ZSTDLIB_API size_t ZSTD_CCtxParams_reset(ZSTD_CCtx_params* params);
+
+/*! ZSTD_CCtxParams_init() :
+ *  Initializes the compression parameters of cctxParams according to
+ *  compression level. All other parameters are reset to their default values.
+ */
+ZSTDLIB_API size_t ZSTD_CCtxParams_init(ZSTD_CCtx_params* cctxParams, int compressionLevel);
+
+/*! ZSTD_CCtxParams_init_advanced() :
+ *  Initializes the compression and frame parameters of cctxParams according to
+ *  params. All other parameters are reset to their default values.
+ */
+ZSTDLIB_API size_t ZSTD_CCtxParams_init_advanced(ZSTD_CCtx_params* cctxParams, ZSTD_parameters params);
+
+/*! ZSTD_CCtxParams_setParameter() :
+ *  Similar to ZSTD_CCtx_setParameter.
+ *  Set one compression parameter, selected by enum ZSTD_cParameter.
+ *  Parameters must be applied to a ZSTD_CCtx using
+ *  ZSTD_CCtx_setParametersUsingCCtxParams().
+ * @result : a code representing success or failure (which can be tested with
+ *           ZSTD_isError()).
+ */
+ZSTDLIB_API size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* params, ZSTD_cParameter param, int value);
+
+/*! ZSTD_CCtxParams_getParameter() :
+ * Similar to ZSTD_CCtx_getParameter.
+ * Get the requested value of one compression parameter, selected by enum ZSTD_cParameter.
+ * @result : 0, or an error code (which can be tested with ZSTD_isError()).
+ */
+ZSTDLIB_API size_t ZSTD_CCtxParams_getParameter(const ZSTD_CCtx_params* params, ZSTD_cParameter param, int* value);
+
+/*! ZSTD_CCtx_setParametersUsingCCtxParams() :
+ *  Apply a set of ZSTD_CCtx_params to the compression context.
+ *  This can be done even after compression is started,
+ *    if nbWorkers==0, this will have no impact until a new compression is started.
+ *    if nbWorkers>=1, new parameters will be picked up at next job,
+ *       with a few restrictions (windowLog, pledgedSrcSize, nbWorkers, jobSize, and overlapLog are not updated).
+ */
+ZSTDLIB_API size_t ZSTD_CCtx_setParametersUsingCCtxParams(
+        ZSTD_CCtx* cctx, const ZSTD_CCtx_params* params);
+
+/*! ZSTD_compressStream2_simpleArgs() :
+ *  Same as ZSTD_compressStream2(),
+ *  but using only integral types as arguments.
+ *  This variant might be helpful for binders from dynamic languages
+ *  which have troubles handling structures containing memory pointers.
+ */
+ZSTDLIB_API size_t ZSTD_compressStream2_simpleArgs (
+                            ZSTD_CCtx* cctx,
+                            void* dst, size_t dstCapacity, size_t* dstPos,
+                      const void* src, size_t srcSize, size_t* srcPos,
+                            ZSTD_EndDirective endOp);
+
+
+/* *************************************
+*  Advanced decompression functions
+***************************************/
+
+/*! ZSTD_isFrame() :
+ *  Tells if the content of `buffer` starts with a valid Frame Identifier.
+ *  Note : Frame Identifier is 4 bytes. If `size < 4`, @return will always be 0.
+ *  Note 2 : Legacy Frame Identifiers are considered valid only if Legacy Support is enabled.
+ *  Note 3 : Skippable Frame Identifiers are considered valid. */
+ZSTDLIB_API unsigned ZSTD_isFrame(const void* buffer, size_t size);
+
+/*! ZSTD_createDDict_byReference() :
+ *  Create a digested dictionary, ready to start decompression operation without startup delay.
+ *  Dictionary content is referenced, and therefore stays in dictBuffer.
+ *  It is important that dictBuffer outlives DDict,
+ *  it must remain read accessible throughout the lifetime of DDict */
+ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict_byReference(const void* dictBuffer, size_t dictSize);
+
+/*! ZSTD_DCtx_loadDictionary_byReference() :
+ *  Same as ZSTD_DCtx_loadDictionary(),
+ *  but references `dict` content instead of copying it into `dctx`.
+ *  This saves memory if `dict` remains around.,
+ *  However, it's imperative that `dict` remains accessible (and unmodified) while being used, so it must outlive decompression. */
+ZSTDLIB_API size_t ZSTD_DCtx_loadDictionary_byReference(ZSTD_DCtx* dctx, const void* dict, size_t dictSize);
+
+/*! ZSTD_DCtx_loadDictionary_advanced() :
+ *  Same as ZSTD_DCtx_loadDictionary(),
+ *  but gives direct control over
+ *  how to load the dictionary (by copy ? by reference ?)
+ *  and how to interpret it (automatic ? force raw mode ? full mode only ?). */
+ZSTDLIB_API size_t ZSTD_DCtx_loadDictionary_advanced(ZSTD_DCtx* dctx, const void* dict, size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod, ZSTD_dictContentType_e dictContentType);
+
+/*! ZSTD_DCtx_refPrefix_advanced() :
+ *  Same as ZSTD_DCtx_refPrefix(), but gives finer control over
+ *  how to interpret prefix content (automatic ? force raw mode (default) ? full mode only ?) */
+ZSTDLIB_API size_t ZSTD_DCtx_refPrefix_advanced(ZSTD_DCtx* dctx, const void* prefix, size_t prefixSize, ZSTD_dictContentType_e dictContentType);
+
+/*! ZSTD_DCtx_setMaxWindowSize() :
+ *  Refuses allocating internal buffers for frames requiring a window size larger than provided limit.
+ *  This protects a decoder context from reserving too much memory for itself (potential attack scenario).
+ *  This parameter is only useful in streaming mode, since no internal buffer is allocated in single-pass mode.
+ *  By default, a decompression context accepts all window sizes <= (1 << ZSTD_WINDOWLOG_LIMIT_DEFAULT)
+ * @return : 0, or an error code (which can be tested using ZSTD_isError()).
+ */
+ZSTDLIB_API size_t ZSTD_DCtx_setMaxWindowSize(ZSTD_DCtx* dctx, size_t maxWindowSize);
+
+/*! ZSTD_DCtx_getParameter() :
+ *  Get the requested decompression parameter value, selected by enum ZSTD_dParameter,
+ *  and store it into int* value.
+ * @return : 0, or an error code (which can be tested with ZSTD_isError()).
+ */
+ZSTDLIB_API size_t ZSTD_DCtx_getParameter(ZSTD_DCtx* dctx, ZSTD_dParameter param, int* value);
+
+/* ZSTD_d_format
+ * experimental parameter,
+ * allowing selection between ZSTD_format_e input compression formats
+ */
+#define ZSTD_d_format ZSTD_d_experimentalParam1
+/* ZSTD_d_stableOutBuffer
+ * Experimental parameter.
+ * Default is 0 == disabled. Set to 1 to enable.
+ *
+ * Tells the decompressor that the ZSTD_outBuffer will ALWAYS be the same
+ * between calls, except for the modifications that zstd makes to pos (the
+ * caller must not modify pos). This is checked by the decompressor, and
+ * decompression will fail if it ever changes. Therefore the ZSTD_outBuffer
+ * MUST be large enough to fit the entire decompressed frame. This will be
+ * checked when the frame content size is known. The data in the ZSTD_outBuffer
+ * in the range [dst, dst + pos) MUST not be modified during decompression
+ * or you will get data corruption.
+ *
+ * When this flags is enabled zstd won't allocate an output buffer, because
+ * it can write directly to the ZSTD_outBuffer, but it will still allocate
+ * an input buffer large enough to fit any compressed block. This will also
+ * avoid the memcpy() from the internal output buffer to the ZSTD_outBuffer.
+ * If you need to avoid the input buffer allocation use the buffer-less
+ * streaming API.
+ *
+ * NOTE: So long as the ZSTD_outBuffer always points to valid memory, using
+ * this flag is ALWAYS memory safe, and will never access out-of-bounds
+ * memory. However, decompression WILL fail if you violate the preconditions.
+ *
+ * WARNING: The data in the ZSTD_outBuffer in the range [dst, dst + pos) MUST
+ * not be modified during decompression or you will get data corruption. This
+ * is because zstd needs to reference data in the ZSTD_outBuffer to regenerate
+ * matches. Normally zstd maintains its own buffer for this purpose, but passing
+ * this flag tells zstd to use the user provided buffer.
+ */
+#define ZSTD_d_stableOutBuffer ZSTD_d_experimentalParam2
+
+/* ZSTD_d_forceIgnoreChecksum
+ * Experimental parameter.
+ * Default is 0 == disabled. Set to 1 to enable
+ *
+ * Tells the decompressor to skip checksum validation during decompression, regardless
+ * of whether checksumming was specified during compression. This offers some
+ * slight performance benefits, and may be useful for debugging.
+ * Param has values of type ZSTD_forceIgnoreChecksum_e
+ */
+#define ZSTD_d_forceIgnoreChecksum ZSTD_d_experimentalParam3
+
+/* ZSTD_d_refMultipleDDicts
+ * Experimental parameter.
+ * Default is 0 == disabled. Set to 1 to enable
+ *
+ * If enabled and dctx is allocated on the heap, then additional memory will be allocated
+ * to store references to multiple ZSTD_DDict. That is, multiple calls of ZSTD_refDDict()
+ * using a given ZSTD_DCtx, rather than overwriting the previous DDict reference, will instead
+ * store all references. At decompression time, the appropriate dictID is selected
+ * from the set of DDicts based on the dictID in the frame.
+ *
+ * Usage is simply calling ZSTD_refDDict() on multiple dict buffers.
+ *
+ * Param has values of byte ZSTD_refMultipleDDicts_e
+ *
+ * WARNING: Enabling this parameter and calling ZSTD_DCtx_refDDict(), will trigger memory
+ * allocation for the hash table. ZSTD_freeDCtx() also frees this memory.
+ * Memory is allocated as per ZSTD_DCtx::customMem.
+ *
+ * Although this function allocates memory for the table, the user is still responsible for
+ * memory management of the underlying ZSTD_DDict* themselves.
+ */
+#define ZSTD_d_refMultipleDDicts ZSTD_d_experimentalParam4
+
+
+/*! ZSTD_DCtx_setFormat() :
+ *  Instruct the decoder context about what kind of data to decode next.
+ *  This instruction is mandatory to decode data without a fully-formed header,
+ *  such ZSTD_f_zstd1_magicless for example.
+ * @return : 0, or an error code (which can be tested using ZSTD_isError()). */
+ZSTDLIB_API size_t ZSTD_DCtx_setFormat(ZSTD_DCtx* dctx, ZSTD_format_e format);
+
+/*! ZSTD_decompressStream_simpleArgs() :
+ *  Same as ZSTD_decompressStream(),
+ *  but using only integral types as arguments.
+ *  This can be helpful for binders from dynamic languages
+ *  which have troubles handling structures containing memory pointers.
+ */
+ZSTDLIB_API size_t ZSTD_decompressStream_simpleArgs (
+                            ZSTD_DCtx* dctx,
+                            void* dst, size_t dstCapacity, size_t* dstPos,
+                      const void* src, size_t srcSize, size_t* srcPos);
+
+
+/* ******************************************************************
+*  Advanced streaming functions
+*  Warning : most of these functions are now redundant with the Advanced API.
+*  Once Advanced API reaches "stable" status,
+*  redundant functions will be deprecated, and then at some point removed.
+********************************************************************/
+
+/*=====   Advanced Streaming compression functions  =====*/
+
+/*! ZSTD_initCStream_srcSize() :
+ * This function is deprecated, and equivalent to:
+ *     ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only);
+ *     ZSTD_CCtx_refCDict(zcs, NULL); // clear the dictionary (if any)
+ *     ZSTD_CCtx_setParameter(zcs, ZSTD_c_compressionLevel, compressionLevel);
+ *     ZSTD_CCtx_setPledgedSrcSize(zcs, pledgedSrcSize);
+ *
+ * pledgedSrcSize must be correct. If it is not known at init time, use
+ * ZSTD_CONTENTSIZE_UNKNOWN. Note that, for compatibility with older programs,
+ * "0" also disables frame content size field. It may be enabled in the future.
+ * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
+ */
+ZSTDLIB_API size_t
+ZSTD_initCStream_srcSize(ZSTD_CStream* zcs,
+                         int compressionLevel,
+                         unsigned long long pledgedSrcSize);
+
+/*! ZSTD_initCStream_usingDict() :
+ * This function is deprecated, and is equivalent to:
+ *     ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only);
+ *     ZSTD_CCtx_setParameter(zcs, ZSTD_c_compressionLevel, compressionLevel);
+ *     ZSTD_CCtx_loadDictionary(zcs, dict, dictSize);
+ *
+ * Creates of an internal CDict (incompatible with static CCtx), except if
+ * dict == NULL or dictSize < 8, in which case no dict is used.
+ * Note: dict is loaded with ZSTD_dct_auto (treated as a full zstd dictionary if
+ * it begins with ZSTD_MAGIC_DICTIONARY, else as raw content) and ZSTD_dlm_byCopy.
+ * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
+ */
+ZSTDLIB_API size_t
+ZSTD_initCStream_usingDict(ZSTD_CStream* zcs,
+                     const void* dict, size_t dictSize,
+                           int compressionLevel);
+
+/*! ZSTD_initCStream_advanced() :
+ * This function is deprecated, and is approximately equivalent to:
+ *     ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only);
+ *     // Pseudocode: Set each zstd parameter and leave the rest as-is.
+ *     for ((param, value) : params) {
+ *         ZSTD_CCtx_setParameter(zcs, param, value);
+ *     }
+ *     ZSTD_CCtx_setPledgedSrcSize(zcs, pledgedSrcSize);
+ *     ZSTD_CCtx_loadDictionary(zcs, dict, dictSize);
+ *
+ * dict is loaded with ZSTD_dct_auto and ZSTD_dlm_byCopy.
+ * pledgedSrcSize must be correct.
+ * If srcSize is not known at init time, use value ZSTD_CONTENTSIZE_UNKNOWN.
+ * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
+ */
+ZSTDLIB_API size_t
+ZSTD_initCStream_advanced(ZSTD_CStream* zcs,
+                    const void* dict, size_t dictSize,
+                          ZSTD_parameters params,
+                          unsigned long long pledgedSrcSize);
+
+/*! ZSTD_initCStream_usingCDict() :
+ * This function is deprecated, and equivalent to:
+ *     ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only);
+ *     ZSTD_CCtx_refCDict(zcs, cdict);
+ *
+ * note : cdict will just be referenced, and must outlive compression session
+ * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
+ */
+ZSTDLIB_API size_t ZSTD_initCStream_usingCDict(ZSTD_CStream* zcs, const ZSTD_CDict* cdict);
+
+/*! ZSTD_initCStream_usingCDict_advanced() :
+ *   This function is DEPRECATED, and is approximately equivalent to:
+ *     ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only);
+ *     // Pseudocode: Set each zstd frame parameter and leave the rest as-is.
+ *     for ((fParam, value) : fParams) {
+ *         ZSTD_CCtx_setParameter(zcs, fParam, value);
+ *     }
+ *     ZSTD_CCtx_setPledgedSrcSize(zcs, pledgedSrcSize);
+ *     ZSTD_CCtx_refCDict(zcs, cdict);
+ *
+ * same as ZSTD_initCStream_usingCDict(), with control over frame parameters.
+ * pledgedSrcSize must be correct. If srcSize is not known at init time, use
+ * value ZSTD_CONTENTSIZE_UNKNOWN.
+ * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
+ */
+ZSTDLIB_API size_t
+ZSTD_initCStream_usingCDict_advanced(ZSTD_CStream* zcs,
+                               const ZSTD_CDict* cdict,
+                                     ZSTD_frameParameters fParams,
+                                     unsigned long long pledgedSrcSize);
+
+/*! ZSTD_resetCStream() :
+ * This function is deprecated, and is equivalent to:
+ *     ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only);
+ *     ZSTD_CCtx_setPledgedSrcSize(zcs, pledgedSrcSize);
+ *
+ *  start a new frame, using same parameters from previous frame.
+ *  This is typically useful to skip dictionary loading stage, since it will re-use it in-place.
+ *  Note that zcs must be init at least once before using ZSTD_resetCStream().
+ *  If pledgedSrcSize is not known at reset time, use macro ZSTD_CONTENTSIZE_UNKNOWN.
+ *  If pledgedSrcSize > 0, its value must be correct, as it will be written in header, and controlled at the end.
+ *  For the time being, pledgedSrcSize==0 is interpreted as "srcSize unknown" for compatibility with older programs,
+ *  but it will change to mean "empty" in future version, so use macro ZSTD_CONTENTSIZE_UNKNOWN instead.
+ * @return : 0, or an error code (which can be tested using ZSTD_isError())
+ *  Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
+ */
+ZSTDLIB_API size_t ZSTD_resetCStream(ZSTD_CStream* zcs, unsigned long long pledgedSrcSize);
+
+
+typedef struct {
+    unsigned long long ingested;   /* nb input bytes read and buffered */
+    unsigned long long consumed;   /* nb input bytes actually compressed */
+    unsigned long long produced;   /* nb of compressed bytes generated and buffered */
+    unsigned long long flushed;    /* nb of compressed bytes flushed : not provided; can be tracked from caller side */
+    unsigned currentJobID;         /* MT only : latest started job nb */
+    unsigned nbActiveWorkers;      /* MT only : nb of workers actively compressing at probe time */
+} ZSTD_frameProgression;
+
+/* ZSTD_getFrameProgression() :
+ * tells how much data has been ingested (read from input)
+ * consumed (input actually compressed) and produced (output) for current frame.
+ * Note : (ingested - consumed) is amount of input data buffered internally, not yet compressed.
+ * Aggregates progression inside active worker threads.
+ */
+ZSTDLIB_API ZSTD_frameProgression ZSTD_getFrameProgression(const ZSTD_CCtx* cctx);
+
+/*! ZSTD_toFlushNow() :
+ *  Tell how many bytes are ready to be flushed immediately.
+ *  Useful for multithreading scenarios (nbWorkers >= 1).
+ *  Probe the oldest active job, defined as oldest job not yet entirely flushed,
+ *  and check its output buffer.
+ * @return : amount of data stored in oldest job and ready to be flushed immediately.
+ *  if @return == 0, it means either :
+ *  + there is no active job (could be checked with ZSTD_frameProgression()), or
+ *  + oldest job is still actively compressing data,
+ *    but everything it has produced has also been flushed so far,
+ *    therefore flush speed is limited by production speed of oldest job
+ *    irrespective of the speed of concurrent (and newer) jobs.
+ */
+ZSTDLIB_API size_t ZSTD_toFlushNow(ZSTD_CCtx* cctx);
+
+
+/*=====   Advanced Streaming decompression functions  =====*/
+
+/*!
+ * This function is deprecated, and is equivalent to:
+ *
+ *     ZSTD_DCtx_reset(zds, ZSTD_reset_session_only);
+ *     ZSTD_DCtx_loadDictionary(zds, dict, dictSize);
+ *
+ * note: no dictionary will be used if dict == NULL or dictSize < 8
+ * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
+ */
+ZSTDLIB_API size_t ZSTD_initDStream_usingDict(ZSTD_DStream* zds, const void* dict, size_t dictSize);
+
+/*!
+ * This function is deprecated, and is equivalent to:
+ *
+ *     ZSTD_DCtx_reset(zds, ZSTD_reset_session_only);
+ *     ZSTD_DCtx_refDDict(zds, ddict);
+ *
+ * note : ddict is referenced, it must outlive decompression session
+ * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
+ */
+ZSTDLIB_API size_t ZSTD_initDStream_usingDDict(ZSTD_DStream* zds, const ZSTD_DDict* ddict);
+
+/*!
+ * This function is deprecated, and is equivalent to:
+ *
+ *     ZSTD_DCtx_reset(zds, ZSTD_reset_session_only);
+ *
+ * re-use decompression parameters from previous init; saves dictionary loading
+ * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x
+ */
+ZSTDLIB_API size_t ZSTD_resetDStream(ZSTD_DStream* zds);
+
+
+/* *******************************************************************
+*  Buffer-less and synchronous inner streaming functions
+*
+*  This is an advanced API, giving full control over buffer management, for users which need direct control over memory.
+*  But it's also a complex one, with several restrictions, documented below.
+*  Prefer normal streaming API for an easier experience.
+********************************************************************* */
+
+/*
+  Buffer-less streaming compression (synchronous mode)
+
+  A ZSTD_CCtx object is required to track streaming operations.
+  Use ZSTD_createCCtx() / ZSTD_freeCCtx() to manage resource.
+  ZSTD_CCtx object can be re-used multiple times within successive compression operations.
+
+  Start by initializing a context.
+  Use ZSTD_compressBegin(), or ZSTD_compressBegin_usingDict() for dictionary compression,
+  or ZSTD_compressBegin_advanced(), for finer parameter control.
+  It's also possible to duplicate a reference context which has already been initialized, using ZSTD_copyCCtx()
+
+  Then, consume your input using ZSTD_compressContinue().
+  There are some important considerations to keep in mind when using this advanced function :
+  - ZSTD_compressContinue() has no internal buffer. It uses externally provided buffers only.
+  - Interface is synchronous : input is consumed entirely and produces 1+ compressed blocks.
+  - Caller must ensure there is enough space in `dst` to store compressed data under worst case scenario.
+    Worst case evaluation is provided by ZSTD_compressBound().
+    ZSTD_compressContinue() doesn't guarantee recover after a failed compression.
+  - ZSTD_compressContinue() presumes prior input ***is still accessible and unmodified*** (up to maximum distance size, see WindowLog).
+    It remembers all previous contiguous blocks, plus one separated memory segment (which can itself consists of multiple contiguous blocks)
+  - ZSTD_compressContinue() detects that prior input has been overwritten when `src` buffer overlaps.
+    In which case, it will "discard" the relevant memory section from its history.
+
+  Finish a frame with ZSTD_compressEnd(), which will write the last block(s) and optional checksum.
+  It's possible to use srcSize==0, in which case, it will write a final empty block to end the frame.
+  Without last block mark, frames are considered unfinished (hence corrupted) by compliant decoders.
+
+  `ZSTD_CCtx` object can be re-used (ZSTD_compressBegin()) to compress again.
+*/
+
+/*=====   Buffer-less streaming compression functions  =====*/
+ZSTDLIB_API size_t ZSTD_compressBegin(ZSTD_CCtx* cctx, int compressionLevel);
+ZSTDLIB_API size_t ZSTD_compressBegin_usingDict(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, int compressionLevel);
+ZSTDLIB_API size_t ZSTD_compressBegin_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_parameters params, unsigned long long pledgedSrcSize); /*< pledgedSrcSize : If srcSize is not known at init time, use ZSTD_CONTENTSIZE_UNKNOWN */
+ZSTDLIB_API size_t ZSTD_compressBegin_usingCDict(ZSTD_CCtx* cctx, const ZSTD_CDict* cdict); /*< note: fails if cdict==NULL */
+ZSTDLIB_API size_t ZSTD_compressBegin_usingCDict_advanced(ZSTD_CCtx* const cctx, const ZSTD_CDict* const cdict, ZSTD_frameParameters const fParams, unsigned long long const pledgedSrcSize);   /* compression parameters are already set within cdict. pledgedSrcSize must be correct. If srcSize is not known, use macro ZSTD_CONTENTSIZE_UNKNOWN */
+ZSTDLIB_API size_t ZSTD_copyCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx* preparedCCtx, unsigned long long pledgedSrcSize); /*<  note: if pledgedSrcSize is not known, use ZSTD_CONTENTSIZE_UNKNOWN */
+
+ZSTDLIB_API size_t ZSTD_compressContinue(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
+ZSTDLIB_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
+
+
+/*
+  Buffer-less streaming decompression (synchronous mode)
+
+  A ZSTD_DCtx object is required to track streaming operations.
+  Use ZSTD_createDCtx() / ZSTD_freeDCtx() to manage it.
+  A ZSTD_DCtx object can be re-used multiple times.
+
+  First typical operation is to retrieve frame parameters, using ZSTD_getFrameHeader().
+  Frame header is extracted from the beginning of compressed frame, so providing only the frame's beginning is enough.
+  Data fragment must be large enough to ensure successful decoding.
+ `ZSTD_frameHeaderSize_max` bytes is guaranteed to always be large enough.
+  @result : 0 : successful decoding, the `ZSTD_frameHeader` structure is correctly filled.
+           >0 : `srcSize` is too small, please provide at least @result bytes on next attempt.
+           errorCode, which can be tested using ZSTD_isError().
+
+  It fills a ZSTD_frameHeader structure with important information to correctly decode the frame,
+  such as the dictionary ID, content size, or maximum back-reference distance (`windowSize`).
+  Note that these values could be wrong, either because of data corruption, or because a 3rd party deliberately spoofs false information.
+  As a consequence, check that values remain within valid application range.
+  For example, do not allocate memory blindly, check that `windowSize` is within expectation.
+  Each application can set its own limits, depending on local restrictions.
+  For extended interoperability, it is recommended to support `windowSize` of at least 8 MB.
+
+  ZSTD_decompressContinue() needs previous data blocks during decompression, up to `windowSize` bytes.
+  ZSTD_decompressContinue() is very sensitive to contiguity,
+  if 2 blocks don't follow each other, make sure that either the compressor breaks contiguity at the same place,
+  or that previous contiguous segment is large enough to properly handle maximum back-reference distance.
+  There are multiple ways to guarantee this condition.
+
+  The most memory efficient way is to use a round buffer of sufficient size.
+  Sufficient size is determined by invoking ZSTD_decodingBufferSize_min(),
+  which can @return an error code if required value is too large for current system (in 32-bits mode).
+  In a round buffer methodology, ZSTD_decompressContinue() decompresses each block next to previous one,
+  up to the moment there is not enough room left in the buffer to guarantee decoding another full block,
+  which maximum size is provided in `ZSTD_frameHeader` structure, field `blockSizeMax`.
+  At which point, decoding can resume from the beginning of the buffer.
+  Note that already decoded data stored in the buffer should be flushed before being overwritten.
+
+  There are alternatives possible, for example using two or more buffers of size `windowSize` each, though they consume more memory.
+
+  Finally, if you control the compression process, you can also ignore all buffer size rules,
+  as long as the encoder and decoder progress in "lock-step",
+  aka use exactly the same buffer sizes, break contiguity at the same place, etc.
+
+  Once buffers are setup, start decompression, with ZSTD_decompressBegin().
+  If decompression requires a dictionary, use ZSTD_decompressBegin_usingDict() or ZSTD_decompressBegin_usingDDict().
+
+  Then use ZSTD_nextSrcSizeToDecompress() and ZSTD_decompressContinue() alternatively.
+  ZSTD_nextSrcSizeToDecompress() tells how many bytes to provide as 'srcSize' to ZSTD_decompressContinue().
+  ZSTD_decompressContinue() requires this _exact_ amount of bytes, or it will fail.
+
+ @result of ZSTD_decompressContinue() is the number of bytes regenerated within 'dst' (necessarily <= dstCapacity).
+  It can be zero : it just means ZSTD_decompressContinue() has decoded some metadata item.
+  It can also be an error code, which can be tested with ZSTD_isError().
+
+  A frame is fully decoded when ZSTD_nextSrcSizeToDecompress() returns zero.
+  Context can then be reset to start a new decompression.
+
+  Note : it's possible to know if next input to present is a header or a block, using ZSTD_nextInputType().
+  This information is not required to properly decode a frame.
+
+  == Special case : skippable frames ==
+
+  Skippable frames allow integration of user-defined data into a flow of concatenated frames.
+  Skippable frames will be ignored (skipped) by decompressor.
+  The format of skippable frames is as follows :
+  a) Skippable frame ID - 4 Bytes, Little endian format, any value from 0x184D2A50 to 0x184D2A5F
+  b) Frame Size - 4 Bytes, Little endian format, unsigned 32-bits
+  c) Frame Content - any content (User Data) of length equal to Frame Size
+  For skippable frames ZSTD_getFrameHeader() returns zfhPtr->frameType==ZSTD_skippableFrame.
+  For skippable frames ZSTD_decompressContinue() always returns 0 : it only skips the content.
+*/
+
+/*=====   Buffer-less streaming decompression functions  =====*/
+typedef enum { ZSTD_frame, ZSTD_skippableFrame } ZSTD_frameType_e;
+typedef struct {
+    unsigned long long frameContentSize; /* if == ZSTD_CONTENTSIZE_UNKNOWN, it means this field is not available. 0 means "empty" */
+    unsigned long long windowSize;       /* can be very large, up to <= frameContentSize */
+    unsigned blockSizeMax;
+    ZSTD_frameType_e frameType;          /* if == ZSTD_skippableFrame, frameContentSize is the size of skippable content */
+    unsigned headerSize;
+    unsigned dictID;
+    unsigned checksumFlag;
+} ZSTD_frameHeader;
+
+/*! ZSTD_getFrameHeader() :
+ *  decode Frame Header, or requires larger `srcSize`.
+ * @return : 0, `zfhPtr` is correctly filled,
+ *          >0, `srcSize` is too small, value is wanted `srcSize` amount,
+ *           or an error code, which can be tested using ZSTD_isError() */
+ZSTDLIB_API size_t ZSTD_getFrameHeader(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize);   /*< doesn't consume input */
+/*! ZSTD_getFrameHeader_advanced() :
+ *  same as ZSTD_getFrameHeader(),
+ *  with added capability to select a format (like ZSTD_f_zstd1_magicless) */
+ZSTDLIB_API size_t ZSTD_getFrameHeader_advanced(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize, ZSTD_format_e format);
+ZSTDLIB_API size_t ZSTD_decodingBufferSize_min(unsigned long long windowSize, unsigned long long frameContentSize);  /*< when frame content size is not known, pass in frameContentSize == ZSTD_CONTENTSIZE_UNKNOWN */
+
+ZSTDLIB_API size_t ZSTD_decompressBegin(ZSTD_DCtx* dctx);
+ZSTDLIB_API size_t ZSTD_decompressBegin_usingDict(ZSTD_DCtx* dctx, const void* dict, size_t dictSize);
+ZSTDLIB_API size_t ZSTD_decompressBegin_usingDDict(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict);
+
+ZSTDLIB_API size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx* dctx);
+ZSTDLIB_API size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
+
+/* misc */
+ZSTDLIB_API void   ZSTD_copyDCtx(ZSTD_DCtx* dctx, const ZSTD_DCtx* preparedDCtx);
+typedef enum { ZSTDnit_frameHeader, ZSTDnit_blockHeader, ZSTDnit_block, ZSTDnit_lastBlock, ZSTDnit_checksum, ZSTDnit_skippableFrame } ZSTD_nextInputType_e;
+ZSTDLIB_API ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx);
+
+
+
+
+/* ============================ */
+/*       Block level API       */
+/* ============================ */
+
+/*!
+    Block functions produce and decode raw zstd blocks, without frame metadata.
+    Frame metadata cost is typically ~12 bytes, which can be non-negligible for very small blocks (< 100 bytes).
+    But users will have to take in charge needed metadata to regenerate data, such as compressed and content sizes.
+
+    A few rules to respect :
+    - Compressing and decompressing require a context structure
+      + Use ZSTD_createCCtx() and ZSTD_createDCtx()
+    - It is necessary to init context before starting
+      + compression : any ZSTD_compressBegin*() variant, including with dictionary
+      + decompression : any ZSTD_decompressBegin*() variant, including with dictionary
+      + copyCCtx() and copyDCtx() can be used too
+    - Block size is limited, it must be <= ZSTD_getBlockSize() <= ZSTD_BLOCKSIZE_MAX == 128 KB
+      + If input is larger than a block size, it's necessary to split input data into multiple blocks
+      + For inputs larger than a single block, consider using regular ZSTD_compress() instead.
+        Frame metadata is not that costly, and quickly becomes negligible as source size grows larger than a block.
+    - When a block is considered not compressible enough, ZSTD_compressBlock() result will be 0 (zero) !
+      ===> In which case, nothing is produced into `dst` !
+      + User __must__ test for such outcome and deal directly with uncompressed data
+      + A block cannot be declared incompressible if ZSTD_compressBlock() return value was != 0.
+        Doing so would mess up with statistics history, leading to potential data corruption.
+      + ZSTD_decompressBlock() _doesn't accept uncompressed data as input_ !!
+      + In case of multiple successive blocks, should some of them be uncompressed,
+        decoder must be informed of their existence in order to follow proper history.
+        Use ZSTD_insertBlock() for such a case.
+*/
+
+/*=====   Raw zstd block functions  =====*/
+ZSTDLIB_API size_t ZSTD_getBlockSize   (const ZSTD_CCtx* cctx);
+ZSTDLIB_API size_t ZSTD_compressBlock  (ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
+ZSTDLIB_API size_t ZSTD_decompressBlock(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize);
+ZSTDLIB_API size_t ZSTD_insertBlock    (ZSTD_DCtx* dctx, const void* blockStart, size_t blockSize);  /*< insert uncompressed block into `dctx` history. Useful for multi-blocks decompression. */
+
+
+#endif   /* ZSTD_H_ZSTD_STATIC_LINKING_ONLY */
+