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-rw-r--r--arch/arm/Kconfig4
-rw-r--r--arch/arm/boot/dts/Makefile4
-rw-r--r--arch/arm/boot/dts/xenvm-4.2.dts13
-rw-r--r--arch/arm/include/asm/xen/hypercall.h1
-rw-r--r--arch/arm/mach-msm/last_radio_log.c2
-rw-r--r--arch/arm/mach-omap2/dma.c4
-rw-r--r--arch/arm/mach-omap2/timer.c4
-rw-r--r--arch/arm/mach-pxa/Kconfig1
-rw-r--r--arch/arm/mach-vexpress/v2m.c1
-rw-r--r--arch/arm/mach-virt/virt.c1
-rw-r--r--arch/arm/plat-orion/Makefile2
-rw-r--r--arch/arm/plat-orion/gpio.c2
-rw-r--r--arch/arm/xen/enlighten.c74
-rw-r--r--arch/arm/xen/hypercall.S1
14 files changed, 97 insertions, 17 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 34ef016626ff..46e2b5228606 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -109,9 +109,6 @@ config MIGHT_HAVE_PCI
config SYS_SUPPORTS_APM_EMULATION
bool
-config GENERIC_GPIO
- bool
-
config HAVE_TCM
bool
select GENERIC_ALLOCATOR
@@ -1794,6 +1791,7 @@ config XEN
depends on ARM && AEABI && OF
depends on CPU_V7 && !CPU_V6
depends on !GENERIC_ATOMIC64
+ select ARM_PSCI
help
Say Y if you want to run Linux in a Virtual Machine on Xen on ARM.
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 8562af4fe8fd..b9f7121e6ecf 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -200,8 +200,8 @@ dtb-$(CONFIG_ARCH_VERSATILE) += versatile-ab.dtb \
dtb-$(CONFIG_ARCH_VEXPRESS) += vexpress-v2p-ca5s.dtb \
vexpress-v2p-ca9.dtb \
vexpress-v2p-ca15-tc1.dtb \
- vexpress-v2p-ca15_a7.dtb \
- xenvm-4.2.dtb
+ vexpress-v2p-ca15_a7.dtb
+dtb-$(CONFIG_ARCH_VIRT) += xenvm-4.2.dtb
dtb-$(CONFIG_ARCH_VT8500) += vt8500-bv07.dtb \
wm8505-ref.dtb \
wm8650-mid.dtb \
diff --git a/arch/arm/boot/dts/xenvm-4.2.dts b/arch/arm/boot/dts/xenvm-4.2.dts
index ec3f9528e180..336915151398 100644
--- a/arch/arm/boot/dts/xenvm-4.2.dts
+++ b/arch/arm/boot/dts/xenvm-4.2.dts
@@ -29,6 +29,19 @@
compatible = "arm,cortex-a15";
reg = <0>;
};
+
+ cpu@1 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a15";
+ reg = <1>;
+ };
+ };
+
+ psci {
+ compatible = "arm,psci";
+ method = "hvc";
+ cpu_off = <1>;
+ cpu_on = <2>;
};
memory@80000000 {
diff --git a/arch/arm/include/asm/xen/hypercall.h b/arch/arm/include/asm/xen/hypercall.h
index 8a823253d775..799f42ecca63 100644
--- a/arch/arm/include/asm/xen/hypercall.h
+++ b/arch/arm/include/asm/xen/hypercall.h
@@ -46,6 +46,7 @@ int HYPERVISOR_event_channel_op(int cmd, void *arg);
unsigned long HYPERVISOR_hvm_op(int op, void *arg);
int HYPERVISOR_memory_op(unsigned int cmd, void *arg);
int HYPERVISOR_physdev_op(int cmd, void *arg);
+int HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args);
static inline void
MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
diff --git a/arch/arm/mach-msm/last_radio_log.c b/arch/arm/mach-msm/last_radio_log.c
index 7777767ee89a..9c392a29fc7e 100644
--- a/arch/arm/mach-msm/last_radio_log.c
+++ b/arch/arm/mach-msm/last_radio_log.c
@@ -66,6 +66,6 @@ void msm_init_last_radio_log(struct module *owner)
pr_err("%s: last radio log is %d bytes long\n", __func__,
radio_log_size);
last_radio_log_fops.owner = owner;
- entry->size = radio_log_size;
+ proc_set_size(entry, radio_log_size);
}
EXPORT_SYMBOL(msm_init_last_radio_log);
diff --git a/arch/arm/mach-omap2/dma.c b/arch/arm/mach-omap2/dma.c
index dab9fc014b97..49fd0d501c9b 100644
--- a/arch/arm/mach-omap2/dma.c
+++ b/arch/arm/mach-omap2/dma.c
@@ -28,6 +28,7 @@
#include <linux/init.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
+#include <linux/of.h>
#include <linux/omap-dma.h>
#include "soc.h"
@@ -304,6 +305,9 @@ static int __init omap2_system_dma_init(void)
if (res)
return res;
+ if (of_have_populated_dt())
+ return res;
+
pdev = platform_device_register_full(&omap_dma_dev_info);
if (IS_ERR(pdev))
return PTR_ERR(pdev);
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 05481490a508..f8b23b8040d9 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -553,6 +553,8 @@ static inline void __init realtime_counter_init(void)
clksrc_nr, clksrc_src, clksrc_prop) \
void __init omap##name##_gptimer_timer_init(void) \
{ \
+ if (omap_clk_init) \
+ omap_clk_init(); \
omap_dmtimer_init(); \
omap2_gp_clockevent_init((clkev_nr), clkev_src, clkev_prop); \
omap2_gptimer_clocksource_init((clksrc_nr), clksrc_src, \
@@ -563,6 +565,8 @@ void __init omap##name##_gptimer_timer_init(void) \
clksrc_nr, clksrc_src, clksrc_prop) \
void __init omap##name##_sync32k_timer_init(void) \
{ \
+ if (omap_clk_init) \
+ omap_clk_init(); \
omap_dmtimer_init(); \
omap2_gp_clockevent_init((clkev_nr), clkev_src, clkev_prop); \
/* Enable the use of clocksource="gp_timer" kernel parameter */ \
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 9075461999c1..96100dbf5a2e 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -162,7 +162,6 @@ config MACH_XCEP
select MTD
select MTD_CFI
select MTD_CFI_INTELEXT
- select MTD_CHAR
select MTD_PHYSMAP
select PXA25x
select SMC91X
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index b6083bb1eb8c..8802030df98d 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -450,7 +450,6 @@ static void __init v2m_dt_init(void)
static const char * const v2m_dt_match[] __initconst = {
"arm,vexpress",
- "xen,xenvm",
NULL,
};
diff --git a/arch/arm/mach-virt/virt.c b/arch/arm/mach-virt/virt.c
index adc0945255ae..061f283f579e 100644
--- a/arch/arm/mach-virt/virt.c
+++ b/arch/arm/mach-virt/virt.c
@@ -32,6 +32,7 @@ static void __init virt_init(void)
static const char *virt_dt_match[] = {
"linux,dummy-virt",
+ "xen,xenvm",
NULL
};
diff --git a/arch/arm/plat-orion/Makefile b/arch/arm/plat-orion/Makefile
index 2eca54b65906..9433605cd290 100644
--- a/arch/arm/plat-orion/Makefile
+++ b/arch/arm/plat-orion/Makefile
@@ -3,6 +3,6 @@
#
ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include
-orion-gpio-$(CONFIG_GENERIC_GPIO) += gpio.o
+orion-gpio-$(CONFIG_GPIOLIB) += gpio.o
obj-$(CONFIG_PLAT_ORION_LEGACY) += irq.o pcie.o time.o common.o mpp.o
obj-$(CONFIG_PLAT_ORION_LEGACY) += $(orion-gpio-y)
diff --git a/arch/arm/plat-orion/gpio.c b/arch/arm/plat-orion/gpio.c
index e39c2ba6e2fb..249fe6333e18 100644
--- a/arch/arm/plat-orion/gpio.c
+++ b/arch/arm/plat-orion/gpio.c
@@ -150,7 +150,7 @@ err_out:
}
/*
- * GENERIC_GPIO primitives.
+ * GPIO primitives.
*/
static int orion_gpio_request(struct gpio_chip *chip, unsigned pin)
{
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 8dc0605a9ce9..d30042e39974 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -2,6 +2,7 @@
#include <xen/events.h>
#include <xen/grant_table.h>
#include <xen/hvm.h>
+#include <xen/interface/vcpu.h>
#include <xen/interface/xen.h>
#include <xen/interface/memory.h>
#include <xen/interface/hvm/params.h>
@@ -9,9 +10,11 @@
#include <xen/platform_pci.h>
#include <xen/xenbus.h>
#include <xen/page.h>
+#include <xen/interface/sched.h>
#include <xen/xen-ops.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/hypercall.h>
+#include <asm/system_misc.h>
#include <linux/interrupt.h>
#include <linux/irqreturn.h>
#include <linux/module.h>
@@ -32,6 +35,7 @@ struct shared_info xen_dummy_shared_info;
struct shared_info *HYPERVISOR_shared_info = (void *)&xen_dummy_shared_info;
DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
+static struct vcpu_info __percpu *xen_vcpu_info;
/* These are unused until we support booting "pre-ballooned" */
unsigned long xen_released_pages;
@@ -148,6 +152,47 @@ int xen_unmap_domain_mfn_range(struct vm_area_struct *vma,
}
EXPORT_SYMBOL_GPL(xen_unmap_domain_mfn_range);
+static int __init xen_secondary_init(unsigned int cpu)
+{
+ struct vcpu_register_vcpu_info info;
+ struct vcpu_info *vcpup;
+ int err;
+
+ pr_info("Xen: initializing cpu%d\n", cpu);
+ vcpup = per_cpu_ptr(xen_vcpu_info, cpu);
+
+ info.mfn = __pa(vcpup) >> PAGE_SHIFT;
+ info.offset = offset_in_page(vcpup);
+
+ err = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_info, cpu, &info);
+ if (err) {
+ pr_debug("register_vcpu_info failed: err=%d\n", err);
+ } else {
+ /* This cpu is using the registered vcpu info, even if
+ later ones fail to. */
+ per_cpu(xen_vcpu, cpu) = vcpup;
+ }
+ return 0;
+}
+
+static void xen_restart(char str, const char *cmd)
+{
+ struct sched_shutdown r = { .reason = SHUTDOWN_reboot };
+ int rc;
+ rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
+ if (rc)
+ BUG();
+}
+
+static void xen_power_off(void)
+{
+ struct sched_shutdown r = { .reason = SHUTDOWN_poweroff };
+ int rc;
+ rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
+ if (rc)
+ BUG();
+}
+
/*
* see Documentation/devicetree/bindings/arm/xen.txt for the
* documentation of the Xen Device Tree format.
@@ -163,6 +208,7 @@ static int __init xen_guest_init(void)
const char *version = NULL;
const char *xen_prefix = "xen,xen-";
struct resource res;
+ int i;
node = of_find_compatible_node(NULL, NULL, "xen,xen");
if (!node) {
@@ -209,18 +255,26 @@ static int __init xen_guest_init(void)
/* xen_vcpu is a pointer to the vcpu_info struct in the shared_info
* page, we use it in the event channel upcall and in some pvclock
- * related functions. We don't need the vcpu_info placement
- * optimizations because we don't use any pv_mmu or pv_irq op on
- * HVM.
+ * related functions.
* The shared info contains exactly 1 CPU (the boot CPU). The guest
* is required to use VCPUOP_register_vcpu_info to place vcpu info
- * for secondary CPUs as they are brought up. */
- per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0];
+ * for secondary CPUs as they are brought up.
+ * For uniformity we use VCPUOP_register_vcpu_info even on cpu0.
+ */
+ xen_vcpu_info = __alloc_percpu(sizeof(struct vcpu_info),
+ sizeof(struct vcpu_info));
+ if (xen_vcpu_info == NULL)
+ return -ENOMEM;
+ for_each_online_cpu(i)
+ xen_secondary_init(i);
gnttab_init();
if (!xen_initial_domain())
xenbus_probe(NULL);
+ pm_power_off = xen_power_off;
+ arm_pm_restart = xen_restart;
+
return 0;
}
core_initcall(xen_guest_init);
@@ -231,6 +285,11 @@ static irqreturn_t xen_arm_callback(int irq, void *arg)
return IRQ_HANDLED;
}
+static __init void xen_percpu_enable_events(void *unused)
+{
+ enable_percpu_irq(xen_events_irq, 0);
+}
+
static int __init xen_init_events(void)
{
if (!xen_domain() || xen_events_irq < 0)
@@ -239,12 +298,12 @@ static int __init xen_init_events(void)
xen_init_IRQ();
if (request_percpu_irq(xen_events_irq, xen_arm_callback,
- "events", xen_vcpu)) {
+ "events", &xen_vcpu)) {
pr_err("Error requesting IRQ %d\n", xen_events_irq);
return -EINVAL;
}
- enable_percpu_irq(xen_events_irq, 0);
+ on_each_cpu(xen_percpu_enable_events, NULL, 0);
return 0;
}
@@ -259,4 +318,5 @@ EXPORT_SYMBOL_GPL(HYPERVISOR_sched_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_hvm_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_memory_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_physdev_op);
+EXPORT_SYMBOL_GPL(HYPERVISOR_vcpu_op);
EXPORT_SYMBOL_GPL(privcmd_call);
diff --git a/arch/arm/xen/hypercall.S b/arch/arm/xen/hypercall.S
index 71f723984cbd..199cb2da7663 100644
--- a/arch/arm/xen/hypercall.S
+++ b/arch/arm/xen/hypercall.S
@@ -87,6 +87,7 @@ HYPERCALL2(event_channel_op);
HYPERCALL2(hvm_op);
HYPERCALL2(memory_op);
HYPERCALL2(physdev_op);
+HYPERCALL3(vcpu_op);
ENTRY(privcmd_call)
stmdb sp!, {r4}
generated by cgit v1.2.3 (git 2.0.4) at 2025-05-04 21:57:26 +0000