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-rw-r--r--arch/arm64/boot/dts/mediatek/Makefile55
-rw-r--r--arch/arm64/include/asm/simd.h9
-rw-r--r--arch/arm64/kernel/fpsimd.c130
-rw-r--r--arch/arm64/kernel/process.c1
-rw-r--r--arch/arm64/mm/mmu.c33
-rw-r--r--arch/arm64/net/bpf_jit_comp.c2
-rw-r--r--arch/mips/alchemy/common/setup.c3
-rw-r--r--arch/mips/sgi-ip22/ip22-gio.c3
-rw-r--r--arch/s390/include/uapi/asm/ipl.h1
-rw-r--r--arch/s390/kernel/ipl.c48
-rw-r--r--arch/s390/kernel/stacktrace.c18
-rw-r--r--arch/s390/pci/pci.c7
-rw-r--r--arch/s390/pci/pci_bus.c98
-rw-r--r--arch/s390/pci/pci_bus.h15
-rw-r--r--arch/x86/include/asm/irqflags.h2
-rw-r--r--arch/x86/kernel/unwind_orc.c39
-rw-r--r--arch/x86/kvm/cpuid.c11
-rw-r--r--arch/x86/kvm/svm/nested.c4
-rw-r--r--arch/x86/kvm/svm/svm.c2
-rw-r--r--arch/x86/kvm/svm/svm.h7
-rw-r--r--arch/x86/kvm/vmx/nested.c3
-rw-r--r--arch/x86/kvm/vmx/vmx.c9
-rw-r--r--arch/x86/kvm/x86.c7
-rw-r--r--arch/x86/net/bpf_jit_comp.c12
-rw-r--r--arch/x86/xen/enlighten_pv.c2
25 files changed, 301 insertions, 220 deletions
diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index c5fd6191a925..3f76d9ce9879 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -19,6 +19,27 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-nand.dtbo
dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-nor.dtbo
dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-sata.dtbo
dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-sd.dtbo
+mt7986a-bananapi-bpi-r3-emmc-nand-dtbs := \
+ mt7986a-bananapi-bpi-r3.dtb \
+ mt7986a-bananapi-bpi-r3-emmc.dtbo \
+ mt7986a-bananapi-bpi-r3-nand.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-emmc-nand.dtb
+mt7986a-bananapi-bpi-r3-emmc-nor-dtbs := \
+ mt7986a-bananapi-bpi-r3.dtb \
+ mt7986a-bananapi-bpi-r3-emmc.dtbo \
+ mt7986a-bananapi-bpi-r3-nor.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-emmc-nor.dtb
+mt7986a-bananapi-bpi-r3-sd-nand-dtbs := \
+ mt7986a-bananapi-bpi-r3.dtb \
+ mt7986a-bananapi-bpi-r3-sd.dtbo \
+ mt7986a-bananapi-bpi-r3-nand.dtbo \
+ mt7986a-bananapi-bpi-r3-sata.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-sd-nand.dtb
+mt7986a-bananapi-bpi-r3-sd-nor-dtbs := \
+ mt7986a-bananapi-bpi-r3.dtb \
+ mt7986a-bananapi-bpi-r3-sd.dtbo \
+ mt7986a-bananapi-bpi-r3-nor.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-bananapi-bpi-r3-sd-nor.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4.dtb
@@ -31,6 +52,38 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-pro-cn18.dtbo
dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-pro-emmc.dtbo
dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-pro-sd.dtbo
dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-sd.dtbo
+mt7988a-bananapi-bpi-r4-emmc-dtbs := \
+ mt7988a-bananapi-bpi-r4.dtb \
+ mt7988a-bananapi-bpi-r4-emmc.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-emmc.dtb
+mt7988a-bananapi-bpi-r4-sd-dtbs := \
+ mt7988a-bananapi-bpi-r4.dtb \
+ mt7988a-bananapi-bpi-r4-sd.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-sd.dtb
+mt7988a-bananapi-bpi-r4-2g5-emmc-dtbs := \
+ mt7988a-bananapi-bpi-r4-2g5.dtb \
+ mt7988a-bananapi-bpi-r4-emmc.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-2g5-emmc.dtb
+mt7988a-bananapi-bpi-r4-2g5-sd-dtbs := \
+ mt7988a-bananapi-bpi-r4-2g5.dtb \
+ mt7988a-bananapi-bpi-r4-sd.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-2g5-sd.dtb
+mt7988a-bananapi-bpi-r4-pro-8x-emmc-dtbs := \
+ mt7988a-bananapi-bpi-r4-pro-8x.dtb \
+ mt7988a-bananapi-bpi-r4-pro-emmc.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-pro-8x-emmc.dtb
+mt7988a-bananapi-bpi-r4-pro-8x-sd-dtbs := \
+ mt7988a-bananapi-bpi-r4-pro-8x.dtb \
+ mt7988a-bananapi-bpi-r4-pro-sd.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-pro-8x-sd.dtb
+mt7988a-bananapi-bpi-r4-pro-8x-sd-cn15-dtbs := \
+ mt7988a-bananapi-bpi-r4-pro-8x-sd.dtb \
+ mt7988a-bananapi-bpi-r4-pro-cn15.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-pro-8x-sd-cn15.dtb
+mt7988a-bananapi-bpi-r4-pro-8x-sd-cn18-dtbs := \
+ mt7988a-bananapi-bpi-r4-pro-8x-sd.dtb \
+ mt7988a-bananapi-bpi-r4-pro-cn18.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7988a-bananapi-bpi-r4-pro-8x-sd-cn18.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
@@ -113,6 +166,8 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt8390-grinn-genio-700-sbc.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt8395-kontron-3-5-sbc-i1200.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt8395-radxa-nio-12l.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt8395-radxa-nio-12l-8-hd-panel.dtbo
+mt8395-radxa-nio-12l-8-hd-panel-dtbs := mt8395-radxa-nio-12l.dtb mt8395-radxa-nio-12l-8-hd-panel.dtbo
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt8395-radxa-nio-12l-8-hd-panel.dtb
dtb-$(CONFIG_ARCH_MEDIATEK) += mt8516-pumpkin.dtb
# Device tree overlays support
diff --git a/arch/arm64/include/asm/simd.h b/arch/arm64/include/asm/simd.h
index 0941f6f58a14..69ecbd69ca8c 100644
--- a/arch/arm64/include/asm/simd.h
+++ b/arch/arm64/include/asm/simd.h
@@ -48,6 +48,13 @@ DEFINE_LOCK_GUARD_1(ksimd,
kernel_neon_begin(_T->lock),
kernel_neon_end(_T->lock))
-#define scoped_ksimd() scoped_guard(ksimd, &(struct user_fpsimd_state){})
+#define __scoped_ksimd(_label) \
+ for (struct user_fpsimd_state __uninitialized __st; \
+ true; ({ goto _label; })) \
+ if (0) { \
+_label: break; \
+ } else scoped_guard(ksimd, &__st)
+
+#define scoped_ksimd() __scoped_ksimd(__UNIQUE_ID(label))
#endif
diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c
index c154f72634e0..9de1d8a604cb 100644
--- a/arch/arm64/kernel/fpsimd.c
+++ b/arch/arm64/kernel/fpsimd.c
@@ -180,13 +180,6 @@ static inline void set_sve_default_vl(int val)
set_default_vl(ARM64_VEC_SVE, val);
}
-static u8 *efi_sve_state;
-
-#else /* ! CONFIG_ARM64_SVE */
-
-/* Dummy declaration for code that will be optimised out: */
-extern u8 *efi_sve_state;
-
#endif /* ! CONFIG_ARM64_SVE */
#ifdef CONFIG_ARM64_SME
@@ -1095,36 +1088,6 @@ int vec_verify_vq_map(enum vec_type type)
return 0;
}
-static void __init sve_efi_setup(void)
-{
- int max_vl = 0;
- int i;
-
- if (!IS_ENABLED(CONFIG_EFI))
- return;
-
- for (i = 0; i < ARRAY_SIZE(vl_info); i++)
- max_vl = max(vl_info[i].max_vl, max_vl);
-
- /*
- * alloc_percpu() warns and prints a backtrace if this goes wrong.
- * This is evidence of a crippled system and we are returning void,
- * so no attempt is made to handle this situation here.
- */
- if (!sve_vl_valid(max_vl))
- goto fail;
-
- efi_sve_state = kmalloc(SVE_SIG_REGS_SIZE(sve_vq_from_vl(max_vl)),
- GFP_KERNEL);
- if (!efi_sve_state)
- goto fail;
-
- return;
-
-fail:
- panic("Cannot allocate memory for EFI SVE save/restore");
-}
-
void cpu_enable_sve(const struct arm64_cpu_capabilities *__always_unused p)
{
write_sysreg(read_sysreg(CPACR_EL1) | CPACR_EL1_ZEN_EL1EN, CPACR_EL1);
@@ -1185,8 +1148,6 @@ void __init sve_setup(void)
if (sve_max_virtualisable_vl() < sve_max_vl())
pr_warn("%s: unvirtualisable vector lengths present\n",
info->name);
-
- sve_efi_setup();
}
/*
@@ -1947,9 +1908,6 @@ EXPORT_SYMBOL_GPL(kernel_neon_end);
#ifdef CONFIG_EFI
static struct user_fpsimd_state efi_fpsimd_state;
-static bool efi_fpsimd_state_used;
-static bool efi_sve_state_used;
-static bool efi_sm_state;
/*
* EFI runtime services support functions
@@ -1976,43 +1934,26 @@ void __efi_fpsimd_begin(void)
if (may_use_simd()) {
kernel_neon_begin(&efi_fpsimd_state);
} else {
- WARN_ON(preemptible());
-
/*
- * If !efi_sve_state, SVE can't be in use yet and doesn't need
- * preserving:
+ * We are running in hardirq or NMI context, and the only
+ * legitimate case where this might happen is when EFI pstore
+ * is attempting to record the system's dying gasps into EFI
+ * variables. This could be due to an oops, a panic or a call
+ * to emergency_restart(), and in none of those cases, we can
+ * expect the current task to ever return to user space again,
+ * or for the kernel to resume any normal execution, for that
+ * matter (an oops in hardirq context triggers a panic too).
+ *
+ * Therefore, there is no point in attempting to preserve any
+ * SVE/SME state here. On the off chance that we might have
+ * ended up here for a different reason inadvertently, kill the
+ * task and preserve/restore the base FP/SIMD state, which
+ * might belong to kernel mode FP/SIMD.
*/
- if (system_supports_sve() && efi_sve_state != NULL) {
- bool ffr = true;
- u64 svcr;
-
- efi_sve_state_used = true;
-
- if (system_supports_sme()) {
- svcr = read_sysreg_s(SYS_SVCR);
-
- efi_sm_state = svcr & SVCR_SM_MASK;
-
- /*
- * Unless we have FA64 FFR does not
- * exist in streaming mode.
- */
- if (!system_supports_fa64())
- ffr = !(svcr & SVCR_SM_MASK);
- }
-
- sve_save_state(efi_sve_state + sve_ffr_offset(sve_max_vl()),
- &efi_fpsimd_state.fpsr, ffr);
-
- if (system_supports_sme())
- sysreg_clear_set_s(SYS_SVCR,
- SVCR_SM_MASK, 0);
-
- } else {
- fpsimd_save_state(&efi_fpsimd_state);
- }
-
- efi_fpsimd_state_used = true;
+ pr_warn_ratelimited("Calling EFI runtime from %s context\n",
+ in_nmi() ? "NMI" : "hardirq");
+ force_signal_inject(SIGKILL, SI_KERNEL, 0, 0);
+ fpsimd_save_state(&efi_fpsimd_state);
}
}
@@ -2024,41 +1965,10 @@ void __efi_fpsimd_end(void)
if (!system_supports_fpsimd())
return;
- if (!efi_fpsimd_state_used) {
+ if (may_use_simd()) {
kernel_neon_end(&efi_fpsimd_state);
} else {
- if (system_supports_sve() && efi_sve_state_used) {
- bool ffr = true;
-
- /*
- * Restore streaming mode; EFI calls are
- * normal function calls so should not return in
- * streaming mode.
- */
- if (system_supports_sme()) {
- if (efi_sm_state) {
- sysreg_clear_set_s(SYS_SVCR,
- 0,
- SVCR_SM_MASK);
-
- /*
- * Unless we have FA64 FFR does not
- * exist in streaming mode.
- */
- if (!system_supports_fa64())
- ffr = false;
- }
- }
-
- sve_load_state(efi_sve_state + sve_ffr_offset(sve_max_vl()),
- &efi_fpsimd_state.fpsr, ffr);
-
- efi_sve_state_used = false;
- } else {
- fpsimd_load_state(&efi_fpsimd_state);
- }
-
- efi_fpsimd_state_used = false;
+ fpsimd_load_state(&efi_fpsimd_state);
}
}
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index fba7ca102a8c..489554931231 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -292,6 +292,7 @@ static void flush_gcs(void)
current->thread.gcs_base = 0;
current->thread.gcs_size = 0;
current->thread.gcs_el0_mode = 0;
+ current->thread.gcs_el0_locked = 0;
write_sysreg_s(GCSCRE0_EL1_nTR, SYS_GCSCRE0_EL1);
write_sysreg_s(0, SYS_GCSPR_EL0);
}
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 9ae7ce00a7ef..8e1d80a7033e 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -767,18 +767,6 @@ static inline bool force_pte_mapping(void)
return rodata_full || arm64_kfence_can_set_direct_map() || is_realm_world();
}
-static inline bool split_leaf_mapping_possible(void)
-{
- /*
- * !BBML2_NOABORT systems should never run into scenarios where we would
- * have to split. So exit early and let calling code detect it and raise
- * a warning.
- */
- if (!system_supports_bbml2_noabort())
- return false;
- return !force_pte_mapping();
-}
-
static DEFINE_MUTEX(pgtable_split_lock);
int split_kernel_leaf_mapping(unsigned long start, unsigned long end)
@@ -786,11 +774,22 @@ int split_kernel_leaf_mapping(unsigned long start, unsigned long end)
int ret;
/*
- * Exit early if the region is within a pte-mapped area or if we can't
- * split. For the latter case, the permission change code will raise a
- * warning if not already pte-mapped.
+ * !BBML2_NOABORT systems should not be trying to change permissions on
+ * anything that is not pte-mapped in the first place. Just return early
+ * and let the permission change code raise a warning if not already
+ * pte-mapped.
*/
- if (!split_leaf_mapping_possible() || is_kfence_address((void *)start))
+ if (!system_supports_bbml2_noabort())
+ return 0;
+
+ /*
+ * If the region is within a pte-mapped area, there is no need to try to
+ * split. Additionally, CONFIG_DEBUG_PAGEALLOC and CONFIG_KFENCE may
+ * change permissions from atomic context so for those cases (which are
+ * always pte-mapped), we must not go any further because taking the
+ * mutex below may sleep.
+ */
+ if (force_pte_mapping() || is_kfence_address((void *)start))
return 0;
/*
@@ -1089,7 +1088,7 @@ bool arch_kfence_init_pool(void)
int ret;
/* Exit early if we know the linear map is already pte-mapped. */
- if (!split_leaf_mapping_possible())
+ if (force_pte_mapping())
return true;
/* Kfence pool is already pte-mapped for the early init case. */
diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c
index 74dd29816f36..b6eb7a465ad2 100644
--- a/arch/arm64/net/bpf_jit_comp.c
+++ b/arch/arm64/net/bpf_jit_comp.c
@@ -1004,7 +1004,7 @@ static void __maybe_unused build_bhb_mitigation(struct jit_ctx *ctx)
arm64_get_spectre_v2_state() == SPECTRE_VULNERABLE)
return;
- if (capable(CAP_SYS_ADMIN))
+ if (ns_capable_noaudit(&init_user_ns, CAP_SYS_ADMIN))
return;
if (supports_clearbhb(SCOPE_SYSTEM)) {
diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c
index c35b4f809d51..992134a8c23a 100644
--- a/arch/mips/alchemy/common/setup.c
+++ b/arch/mips/alchemy/common/setup.c
@@ -94,8 +94,7 @@ phys_addr_t fixup_bigphys_addr(phys_addr_t phys_addr, phys_addr_t size)
return phys_addr;
}
-static inline unsigned long io_remap_pfn_range_pfn(unsigned long pfn,
- unsigned long size)
+unsigned long io_remap_pfn_range_pfn(unsigned long pfn, unsigned long size)
{
phys_addr_t phys_addr = fixup_bigphys_addr(pfn << PAGE_SHIFT, size);
diff --git a/arch/mips/sgi-ip22/ip22-gio.c b/arch/mips/sgi-ip22/ip22-gio.c
index 5893ea4e382c..19b70928d6dc 100644
--- a/arch/mips/sgi-ip22/ip22-gio.c
+++ b/arch/mips/sgi-ip22/ip22-gio.c
@@ -372,7 +372,8 @@ static void ip22_check_gio(int slotno, unsigned long addr, int irq)
gio_dev->resource.flags = IORESOURCE_MEM;
gio_dev->irq = irq;
dev_set_name(&gio_dev->dev, "%d", slotno);
- gio_device_register(gio_dev);
+ if (gio_device_register(gio_dev))
+ gio_dev_put(gio_dev);
} else
printk(KERN_INFO "GIO: slot %d : Empty\n", slotno);
}
diff --git a/arch/s390/include/uapi/asm/ipl.h b/arch/s390/include/uapi/asm/ipl.h
index 2cd28af50dd4..3d64a2251699 100644
--- a/arch/s390/include/uapi/asm/ipl.h
+++ b/arch/s390/include/uapi/asm/ipl.h
@@ -15,6 +15,7 @@ struct ipl_pl_hdr {
#define IPL_PL_FLAG_IPLPS 0x80
#define IPL_PL_FLAG_SIPL 0x40
#define IPL_PL_FLAG_IPLSR 0x20
+#define IPL_PL_FLAG_SBP 0x10
/* IPL Parameter Block header */
struct ipl_pb_hdr {
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 961a3d60a4dd..dcdc7e274848 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -262,6 +262,24 @@ static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
sys_##_prefix##_##_name##_show, \
sys_##_prefix##_##_name##_store)
+#define DEFINE_IPL_ATTR_BOOTPROG_RW(_prefix, _name, _fmt_out, _fmt_in, _hdr, _value) \
+ IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \
+static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
+ struct kobj_attribute *attr, \
+ const char *buf, size_t len) \
+{ \
+ unsigned long long value; \
+ if (sscanf(buf, _fmt_in, &value) != 1) \
+ return -EINVAL; \
+ (_value) = value; \
+ (_hdr).flags &= ~IPL_PL_FLAG_SBP; \
+ return len; \
+} \
+static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
+ __ATTR(_name, 0644, \
+ sys_##_prefix##_##_name##_show, \
+ sys_##_prefix##_##_name##_store)
+
#define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\
IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \
static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
@@ -818,12 +836,13 @@ DEFINE_IPL_ATTR_RW(reipl_fcp, wwpn, "0x%016llx\n", "%llx\n",
reipl_block_fcp->fcp.wwpn);
DEFINE_IPL_ATTR_RW(reipl_fcp, lun, "0x%016llx\n", "%llx\n",
reipl_block_fcp->fcp.lun);
-DEFINE_IPL_ATTR_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
- reipl_block_fcp->fcp.bootprog);
DEFINE_IPL_ATTR_RW(reipl_fcp, br_lba, "%lld\n", "%lld\n",
reipl_block_fcp->fcp.br_lba);
DEFINE_IPL_ATTR_RW(reipl_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
reipl_block_fcp->fcp.devno);
+DEFINE_IPL_ATTR_BOOTPROG_RW(reipl_fcp, bootprog, "%lld\n", "%lld\n",
+ reipl_block_fcp->hdr,
+ reipl_block_fcp->fcp.bootprog);
static void reipl_get_ascii_loadparm(char *loadparm,
struct ipl_parameter_block *ibp)
@@ -942,10 +961,11 @@ DEFINE_IPL_ATTR_RW(reipl_nvme, fid, "0x%08llx\n", "%llx\n",
reipl_block_nvme->nvme.fid);
DEFINE_IPL_ATTR_RW(reipl_nvme, nsid, "0x%08llx\n", "%llx\n",
reipl_block_nvme->nvme.nsid);
-DEFINE_IPL_ATTR_RW(reipl_nvme, bootprog, "%lld\n", "%lld\n",
- reipl_block_nvme->nvme.bootprog);
DEFINE_IPL_ATTR_RW(reipl_nvme, br_lba, "%lld\n", "%lld\n",
reipl_block_nvme->nvme.br_lba);
+DEFINE_IPL_ATTR_BOOTPROG_RW(reipl_nvme, bootprog, "%lld\n", "%lld\n",
+ reipl_block_nvme->hdr,
+ reipl_block_nvme->nvme.bootprog);
static struct attribute *reipl_nvme_attrs[] = {
&sys_reipl_nvme_fid_attr.attr,
@@ -1038,8 +1058,9 @@ static const struct bin_attribute *const reipl_eckd_bin_attrs[] = {
};
DEFINE_IPL_CCW_ATTR_RW(reipl_eckd, device, reipl_block_eckd->eckd);
-DEFINE_IPL_ATTR_RW(reipl_eckd, bootprog, "%lld\n", "%lld\n",
- reipl_block_eckd->eckd.bootprog);
+DEFINE_IPL_ATTR_BOOTPROG_RW(reipl_eckd, bootprog, "%lld\n", "%lld\n",
+ reipl_block_eckd->hdr,
+ reipl_block_eckd->eckd.bootprog);
static struct attribute *reipl_eckd_attrs[] = {
&sys_reipl_eckd_device_attr.attr,
@@ -1567,12 +1588,13 @@ DEFINE_IPL_ATTR_RW(dump_fcp, wwpn, "0x%016llx\n", "%llx\n",
dump_block_fcp->fcp.wwpn);
DEFINE_IPL_ATTR_RW(dump_fcp, lun, "0x%016llx\n", "%llx\n",
dump_block_fcp->fcp.lun);
-DEFINE_IPL_ATTR_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
- dump_block_fcp->fcp.bootprog);
DEFINE_IPL_ATTR_RW(dump_fcp, br_lba, "%lld\n", "%lld\n",
dump_block_fcp->fcp.br_lba);
DEFINE_IPL_ATTR_RW(dump_fcp, device, "0.0.%04llx\n", "0.0.%llx\n",
dump_block_fcp->fcp.devno);
+DEFINE_IPL_ATTR_BOOTPROG_RW(dump_fcp, bootprog, "%lld\n", "%lld\n",
+ dump_block_fcp->hdr,
+ dump_block_fcp->fcp.bootprog);
DEFINE_IPL_ATTR_SCP_DATA_RW(dump_fcp, dump_block_fcp->hdr,
dump_block_fcp->fcp,
@@ -1604,10 +1626,11 @@ DEFINE_IPL_ATTR_RW(dump_nvme, fid, "0x%08llx\n", "%llx\n",
dump_block_nvme->nvme.fid);
DEFINE_IPL_ATTR_RW(dump_nvme, nsid, "0x%08llx\n", "%llx\n",
dump_block_nvme->nvme.nsid);
-DEFINE_IPL_ATTR_RW(dump_nvme, bootprog, "%lld\n", "%llx\n",
- dump_block_nvme->nvme.bootprog);
DEFINE_IPL_ATTR_RW(dump_nvme, br_lba, "%lld\n", "%llx\n",
dump_block_nvme->nvme.br_lba);
+DEFINE_IPL_ATTR_BOOTPROG_RW(dump_nvme, bootprog, "%lld\n", "%llx\n",
+ dump_block_nvme->hdr,
+ dump_block_nvme->nvme.bootprog);
DEFINE_IPL_ATTR_SCP_DATA_RW(dump_nvme, dump_block_nvme->hdr,
dump_block_nvme->nvme,
@@ -1635,8 +1658,9 @@ static const struct attribute_group dump_nvme_attr_group = {
/* ECKD dump device attributes */
DEFINE_IPL_CCW_ATTR_RW(dump_eckd, device, dump_block_eckd->eckd);
-DEFINE_IPL_ATTR_RW(dump_eckd, bootprog, "%lld\n", "%llx\n",
- dump_block_eckd->eckd.bootprog);
+DEFINE_IPL_ATTR_BOOTPROG_RW(dump_eckd, bootprog, "%lld\n", "%llx\n",
+ dump_block_eckd->hdr,
+ dump_block_eckd->eckd.bootprog);
IPL_ATTR_BR_CHR_SHOW_FN(dump, dump_block_eckd->eckd);
IPL_ATTR_BR_CHR_STORE_FN(dump, dump_block_eckd->eckd);
diff --git a/arch/s390/kernel/stacktrace.c b/arch/s390/kernel/stacktrace.c
index 3aae7f70e6ab..18520d333058 100644
--- a/arch/s390/kernel/stacktrace.c
+++ b/arch/s390/kernel/stacktrace.c
@@ -104,7 +104,6 @@ void arch_stack_walk_user_common(stack_trace_consume_fn consume_entry, void *coo
struct stack_frame_vdso_wrapper __user *sf_vdso;
struct stack_frame_user __user *sf;
unsigned long ip, sp;
- bool first = true;
if (!current->mm)
return;
@@ -133,24 +132,11 @@ void arch_stack_walk_user_common(stack_trace_consume_fn consume_entry, void *coo
if (__get_user(ip, &sf->gprs[8]))
break;
}
- /* Sanity check: ABI requires SP to be 8 byte aligned. */
- if (sp & 0x7)
+ /* Validate SP and RA (ABI requires SP to be 8 byte aligned). */
+ if (sp & 0x7 || ip_invalid(ip))
break;
- if (ip_invalid(ip)) {
- /*
- * If the instruction address is invalid, and this
- * is the first stack frame, assume r14 has not
- * been written to the stack yet. Otherwise exit.
- */
- if (!first)
- break;
- ip = regs->gprs[14];
- if (ip_invalid(ip))
- break;
- }
if (!store_ip(consume_entry, cookie, entry, perf, ip))
break;
- first = false;
}
pagefault_enable();
}
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 5a6ace9d875a..57f3980b98a9 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -961,6 +961,7 @@ void zpci_device_reserved(struct zpci_dev *zdev)
}
void zpci_release_device(struct kref *kref)
+ __releases(&zpci_list_lock)
{
struct zpci_dev *zdev = container_of(kref, struct zpci_dev, kref);
@@ -1148,6 +1149,7 @@ static void zpci_add_devices(struct list_head *scan_list)
int zpci_scan_devices(void)
{
+ struct zpci_bus *zbus;
LIST_HEAD(scan_list);
int rc;
@@ -1156,7 +1158,10 @@ int zpci_scan_devices(void)
return rc;
zpci_add_devices(&scan_list);
- zpci_bus_scan_busses();
+ zpci_bus_for_each(zbus) {
+ zpci_bus_scan_bus(zbus);
+ cond_resched();
+ }
return 0;
}
diff --git a/arch/s390/pci/pci_bus.c b/arch/s390/pci/pci_bus.c
index 66c4bd888b29..42a13e451f64 100644
--- a/arch/s390/pci/pci_bus.c
+++ b/arch/s390/pci/pci_bus.c
@@ -153,23 +153,6 @@ int zpci_bus_scan_bus(struct zpci_bus *zbus)
return ret;
}
-/* zpci_bus_scan_busses - Scan all registered busses
- *
- * Scan all available zbusses
- *
- */
-void zpci_bus_scan_busses(void)
-{
- struct zpci_bus *zbus = NULL;
-
- mutex_lock(&zbus_list_lock);
- list_for_each_entry(zbus, &zbus_list, bus_next) {
- zpci_bus_scan_bus(zbus);
- cond_resched();
- }
- mutex_unlock(&zbus_list_lock);
-}
-
static bool zpci_bus_is_multifunction_root(struct zpci_dev *zdev)
{
return !s390_pci_no_rid && zdev->rid_available &&
@@ -222,10 +205,29 @@ out_free_domain:
return -ENOMEM;
}
-static void zpci_bus_release(struct kref *kref)
+/**
+ * zpci_bus_release - Un-initialize resources associated with the zbus and
+ * free memory
+ * @kref: refcount * that is part of struct zpci_bus
+ *
+ * MUST be called with `zbus_list_lock` held, but the lock is released during
+ * run of the function.
+ */
+static inline void zpci_bus_release(struct kref *kref)
+ __releases(&zbus_list_lock)
{
struct zpci_bus *zbus = container_of(kref, struct zpci_bus, kref);
+ lockdep_assert_held(&zbus_list_lock);
+
+ list_del(&zbus->bus_next);
+ mutex_unlock(&zbus_list_lock);
+
+ /*
+ * At this point no-one should see this object, or be able to get a new
+ * reference to it.
+ */
+
if (zbus->bus) {
pci_lock_rescan_remove();
pci_stop_root_bus(zbus->bus);
@@ -237,16 +239,19 @@ static void zpci_bus_release(struct kref *kref)
pci_unlock_rescan_remove();
}
- mutex_lock(&zbus_list_lock);
- list_del(&zbus->bus_next);
- mutex_unlock(&zbus_list_lock);
zpci_remove_parent_msi_domain(zbus);
kfree(zbus);
}
-static void zpci_bus_put(struct zpci_bus *zbus)
+static inline void __zpci_bus_get(struct zpci_bus *zbus)
+{
+ lockdep_assert_held(&zbus_list_lock);
+ kref_get(&zbus->kref);
+}
+
+static inline void zpci_bus_put(struct zpci_bus *zbus)
{
- kref_put(&zbus->kref, zpci_bus_release);
+ kref_put_mutex(&zbus->kref, zpci_bus_release, &zbus_list_lock);
}
static struct zpci_bus *zpci_bus_get(int topo, bool topo_is_tid)
@@ -258,7 +263,7 @@ static struct zpci_bus *zpci_bus_get(int topo, bool topo_is_tid)
if (!zbus->multifunction)
continue;
if (topo_is_tid == zbus->topo_is_tid && topo == zbus->topo) {
- kref_get(&zbus->kref);
+ __zpci_bus_get(zbus);
goto out_unlock;
}
}
@@ -268,6 +273,44 @@ out_unlock:
return zbus;
}
+/**
+ * zpci_bus_get_next - get the next zbus object from given position in the list
+ * @pos: current position/cursor in the global zbus list
+ *
+ * Acquires and releases references as the cursor iterates (might also free/
+ * release the cursor). Is tolerant of concurrent operations on the list.
+ *
+ * To begin the iteration, set *@pos to %NULL before calling the function.
+ *
+ * *@pos is set to %NULL in cases where either the list is empty, or *@pos is
+ * the last element in the list.
+ *
+ * Context: Process context. May sleep.
+ */
+void zpci_bus_get_next(struct zpci_bus **pos)
+{
+ struct zpci_bus *curp = *pos, *next = NULL;
+
+ mutex_lock(&zbus_list_lock);
+ if (curp)
+ next = list_next_entry(curp, bus_next);
+ else
+ next = list_first_entry(&zbus_list, typeof(*curp), bus_next);
+
+ if (list_entry_is_head(next, &zbus_list, bus_next))
+ next = NULL;
+
+ if (next)
+ __zpci_bus_get(next);
+
+ *pos = next;
+ mutex_unlock(&zbus_list_lock);
+
+ /* zpci_bus_put() might drop refcount to 0 and locks zbus_list_lock */
+ if (curp)
+ zpci_bus_put(curp);
+}
+
static struct zpci_bus *zpci_bus_alloc(int topo, bool topo_is_tid)
{
struct zpci_bus *zbus;
@@ -279,9 +322,6 @@ static struct zpci_bus *zpci_bus_alloc(int topo, bool topo_is_tid)
zbus->topo = topo;
zbus->topo_is_tid = topo_is_tid;
INIT_LIST_HEAD(&zbus->bus_next);
- mutex_lock(&zbus_list_lock);
- list_add_tail(&zbus->bus_next, &zbus_list);
- mutex_unlock(&zbus_list_lock);
kref_init(&zbus->kref);
INIT_LIST_HEAD(&zbus->resources);
@@ -291,6 +331,10 @@ static struct zpci_bus *zpci_bus_alloc(int topo, bool topo_is_tid)
zbus->bus_resource.flags = IORESOURCE_BUS;
pci_add_resource(&zbus->resources, &zbus->bus_resource);
+ mutex_lock(&zbus_list_lock);
+ list_add_tail(&zbus->bus_next, &zbus_list);
+ mutex_unlock(&zbus_list_lock);
+
return zbus;
}
diff --git a/arch/s390/pci/pci_bus.h b/arch/s390/pci/pci_bus.h
index ae3d7a9159bd..e440742e3145 100644
--- a/arch/s390/pci/pci_bus.h
+++ b/arch/s390/pci/pci_bus.h
@@ -15,7 +15,20 @@ int zpci_bus_device_register(struct zpci_dev *zdev, struct pci_ops *ops);
void zpci_bus_device_unregister(struct zpci_dev *zdev);
int zpci_bus_scan_bus(struct zpci_bus *zbus);
-void zpci_bus_scan_busses(void);
+void zpci_bus_get_next(struct zpci_bus **pos);
+
+/**
+ * zpci_bus_for_each - iterate over all the registered zbus objects
+ * @pos: a struct zpci_bus * as cursor
+ *
+ * Acquires and releases references as the cursor iterates over the registered
+ * objects. Is tolerant against concurrent removals of objects.
+ *
+ * Context: Process context. May sleep.
+ */
+#define zpci_bus_for_each(pos) \
+ for ((pos) = NULL, zpci_bus_get_next(&(pos)); (pos) != NULL; \
+ zpci_bus_get_next(&(pos)))
int zpci_bus_scan_device(struct zpci_dev *zdev);
void zpci_bus_remove_device(struct zpci_dev *zdev, bool set_error);
diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
index b30e5474c18e..a1193e9d65f2 100644
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -25,7 +25,7 @@ extern __always_inline unsigned long native_save_fl(void)
*/
asm volatile("# __raw_save_flags\n\t"
"pushf ; pop %0"
- : "=rm" (flags)
+ : ASM_OUTPUT_RM (flags)
: /* no input */
: "memory");
diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c
index 977ee75e047c..f610fde2d5c4 100644
--- a/arch/x86/kernel/unwind_orc.c
+++ b/arch/x86/kernel/unwind_orc.c
@@ -2,6 +2,7 @@
#include <linux/objtool.h>
#include <linux/module.h>
#include <linux/sort.h>
+#include <linux/bpf.h>
#include <asm/ptrace.h>
#include <asm/stacktrace.h>
#include <asm/unwind.h>
@@ -172,6 +173,25 @@ static struct orc_entry *orc_ftrace_find(unsigned long ip)
}
#endif
+/* Fake frame pointer entry -- used as a fallback for generated code */
+static struct orc_entry orc_fp_entry = {
+ .type = ORC_TYPE_CALL,
+ .sp_reg = ORC_REG_BP,
+ .sp_offset = 16,
+ .bp_reg = ORC_REG_PREV_SP,
+ .bp_offset = -16,
+};
+
+static struct orc_entry *orc_bpf_find(unsigned long ip)
+{
+#ifdef CONFIG_BPF_JIT
+ if (bpf_has_frame_pointer(ip))
+ return &orc_fp_entry;
+#endif
+
+ return NULL;
+}
+
/*
* If we crash with IP==0, the last successfully executed instruction
* was probably an indirect function call with a NULL function pointer,
@@ -186,15 +206,6 @@ static struct orc_entry null_orc_entry = {
.type = ORC_TYPE_CALL
};
-/* Fake frame pointer entry -- used as a fallback for generated code */
-static struct orc_entry orc_fp_entry = {
- .type = ORC_TYPE_CALL,
- .sp_reg = ORC_REG_BP,
- .sp_offset = 16,
- .bp_reg = ORC_REG_PREV_SP,
- .bp_offset = -16,
-};
-
static struct orc_entry *orc_find(unsigned long ip)
{
static struct orc_entry *orc;
@@ -238,6 +249,11 @@ static struct orc_entry *orc_find(unsigned long ip)
if (orc)
return orc;
+ /* BPF lookup: */
+ orc = orc_bpf_find(ip);
+ if (orc)
+ return orc;
+
return orc_ftrace_find(ip);
}
@@ -495,9 +511,8 @@ bool unwind_next_frame(struct unwind_state *state)
if (!orc) {
/*
* As a fallback, try to assume this code uses a frame pointer.
- * This is useful for generated code, like BPF, which ORC
- * doesn't know about. This is just a guess, so the rest of
- * the unwind is no longer considered reliable.
+ * This is just a guess, so the rest of the unwind is no longer
+ * considered reliable.
*/
orc = &orc_fp_entry;
state->error = true;
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index d563a948318b..88a5426674a1 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -510,10 +510,17 @@ static int kvm_set_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid_entry2 *e2,
int r;
/*
+ * Apply pending runtime CPUID updates to the current CPUID entries to
+ * avoid false positives due to mismatches on KVM-owned feature flags.
+ */
+ if (vcpu->arch.cpuid_dynamic_bits_dirty)
+ kvm_update_cpuid_runtime(vcpu);
+
+ /*
* Swap the existing (old) entries with the incoming (new) entries in
* order to massage the new entries, e.g. to account for dynamic bits
- * that KVM controls, without clobbering the current guest CPUID, which
- * KVM needs to preserve in order to unwind on failure.
+ * that KVM controls, without losing the current guest CPUID, which KVM
+ * needs to preserve in order to unwind on failure.
*
* Similarly, save the vCPU's current cpu_caps so that the capabilities
* can be updated alongside the CPUID entries when performing runtime
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index c81005b24522..ba0f11c68372 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -985,7 +985,7 @@ int nested_svm_vmrun(struct kvm_vcpu *vcpu)
if (!nested_vmcb_check_save(vcpu) ||
!nested_vmcb_check_controls(vcpu)) {
vmcb12->control.exit_code = SVM_EXIT_ERR;
- vmcb12->control.exit_code_hi = 0;
+ vmcb12->control.exit_code_hi = -1u;
vmcb12->control.exit_info_1 = 0;
vmcb12->control.exit_info_2 = 0;
goto out;
@@ -1018,7 +1018,7 @@ out_exit_err:
svm->soft_int_injected = false;
svm->vmcb->control.exit_code = SVM_EXIT_ERR;
- svm->vmcb->control.exit_code_hi = 0;
+ svm->vmcb->control.exit_code_hi = -1u;
svm->vmcb->control.exit_info_1 = 0;
svm->vmcb->control.exit_info_2 = 0;
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index f56c2d895011..24d59ccfa40d 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -2443,6 +2443,7 @@ static bool check_selective_cr0_intercepted(struct kvm_vcpu *vcpu,
if (cr0 ^ val) {
svm->vmcb->control.exit_code = SVM_EXIT_CR0_SEL_WRITE;
+ svm->vmcb->control.exit_code_hi = 0;
ret = (nested_svm_exit_handled(svm) == NESTED_EXIT_DONE);
}
@@ -4617,6 +4618,7 @@ static int svm_check_intercept(struct kvm_vcpu *vcpu,
if (static_cpu_has(X86_FEATURE_NRIPS))
vmcb->control.next_rip = info->next_rip;
vmcb->control.exit_code = icpt_info.exit_code;
+ vmcb->control.exit_code_hi = 0;
vmexit = nested_svm_exit_handled(svm);
ret = (vmexit == NESTED_EXIT_DONE) ? X86EMUL_INTERCEPTED
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 9e151dbdef25..01be93a53d07 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -761,9 +761,10 @@ int nested_svm_vmexit(struct vcpu_svm *svm);
static inline int nested_svm_simple_vmexit(struct vcpu_svm *svm, u32 exit_code)
{
- svm->vmcb->control.exit_code = exit_code;
- svm->vmcb->control.exit_info_1 = 0;
- svm->vmcb->control.exit_info_2 = 0;
+ svm->vmcb->control.exit_code = exit_code;
+ svm->vmcb->control.exit_code_hi = 0;
+ svm->vmcb->control.exit_info_1 = 0;
+ svm->vmcb->control.exit_info_2 = 0;
return nested_svm_vmexit(svm);
}
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index 40777278eabb..6137e5307d0f 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -19,6 +19,7 @@
#include "trace.h"
#include "vmx.h"
#include "smm.h"
+#include "x86_ops.h"
static bool __read_mostly enable_shadow_vmcs = 1;
module_param_named(enable_shadow_vmcs, enable_shadow_vmcs, bool, S_IRUGO);
@@ -5165,7 +5166,7 @@ void __nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 vm_exit_reason,
if (vmx->nested.update_vmcs01_apicv_status) {
vmx->nested.update_vmcs01_apicv_status = false;
- kvm_make_request(KVM_REQ_APICV_UPDATE, vcpu);
+ vmx_refresh_apicv_exec_ctrl(vcpu);
}
if (vmx->nested.update_vmcs01_hwapic_isr) {
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 4cbe8c84b636..6b96f7aea20b 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6937,15 +6937,6 @@ void vmx_hwapic_isr_update(struct kvm_vcpu *vcpu, int max_isr)
* VM-Exit, otherwise L1 with run with a stale SVI.
*/
if (is_guest_mode(vcpu)) {
- /*
- * KVM is supposed to forward intercepted L2 EOIs to L1 if VID
- * is enabled in vmcs12; as above, the EOIs affect L2's vAPIC.
- * Note, userspace can stuff state while L2 is active; assert
- * that VID is disabled if and only if the vCPU is in KVM_RUN
- * to avoid false positives if userspace is setting APIC state.
- */
- WARN_ON_ONCE(vcpu->wants_to_run &&
- nested_cpu_has_vid(get_vmcs12(vcpu)));
to_vmx(vcpu)->nested.update_vmcs01_hwapic_isr = true;
return;
}
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0c6d899d53dd..ff8812f3a129 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -10886,9 +10886,16 @@ void __kvm_vcpu_update_apicv(struct kvm_vcpu *vcpu)
* pending. At the same time, KVM_REQ_EVENT may not be set as APICv was
* still active when the interrupt got accepted. Make sure
* kvm_check_and_inject_events() is called to check for that.
+ *
+ * Update SVI when APICv gets enabled, otherwise SVI won't reflect the
+ * highest bit in vISR and the next accelerated EOI in the guest won't
+ * be virtualized correctly (the CPU uses SVI to determine which vISR
+ * vector to clear).
*/
if (!apic->apicv_active)
kvm_make_request(KVM_REQ_EVENT, vcpu);
+ else
+ kvm_apic_update_hwapic_isr(vcpu);
out:
preempt_enable();
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index b69dc7194e2c..b0bac2a66eff 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -1678,6 +1678,9 @@ static int do_jit(struct bpf_prog *bpf_prog, int *addrs, u8 *image, u8 *rw_image
emit_prologue(&prog, image, stack_depth,
bpf_prog_was_classic(bpf_prog), tail_call_reachable,
bpf_is_subprog(bpf_prog), bpf_prog->aux->exception_cb);
+
+ bpf_prog->aux->ksym.fp_start = prog - temp;
+
/* Exception callback will clobber callee regs for its own use, and
* restore the original callee regs from main prog's stack frame.
*/
@@ -2736,6 +2739,8 @@ emit_jmp:
pop_r12(&prog);
}
EMIT1(0xC9); /* leave */
+ bpf_prog->aux->ksym.fp_end = prog - temp;
+
emit_return(&prog, image + addrs[i - 1] + (prog - temp));
break;
@@ -3325,6 +3330,9 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *rw_im
}
EMIT1(0x55); /* push rbp */
EMIT3(0x48, 0x89, 0xE5); /* mov rbp, rsp */
+ if (im)
+ im->ksym.fp_start = prog - (u8 *)rw_image;
+
if (!is_imm8(stack_size)) {
/* sub rsp, stack_size */
EMIT3_off32(0x48, 0x81, 0xEC, stack_size);
@@ -3462,7 +3470,11 @@ static int __arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *rw_im
emit_ldx(&prog, BPF_DW, BPF_REG_0, BPF_REG_FP, -8);
emit_ldx(&prog, BPF_DW, BPF_REG_6, BPF_REG_FP, -rbx_off);
+
EMIT1(0xC9); /* leave */
+ if (im)
+ im->ksym.fp_end = prog - (u8 *)rw_image;
+
if (flags & BPF_TRAMP_F_SKIP_FRAME) {
/* skip our return address and return to parent */
EMIT4(0x48, 0x83, 0xC4, 8); /* add rsp, 8 */
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index 4806cc28d7ca..b74ff8bc7f2a 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -108,7 +108,7 @@ static int xen_cpu_dead_pv(unsigned int cpu);
* calls.
*/
DEFINE_PER_CPU(bool, xen_in_preemptible_hcall);
-EXPORT_SYMBOL_GPL(xen_in_preemptible_hcall);
+EXPORT_PER_CPU_SYMBOL_GPL(xen_in_preemptible_hcall);
/*
* In case of scheduling the flag must be cleared and restored after
generated by cgit v1.2.3 (git 2.0.4) at 2025-12-21 04:04:55 +0000