diff options
Diffstat (limited to 'arch/arm/xen/enlighten.c')
| -rw-r--r-- | arch/arm/xen/enlighten.c | 69 |
1 files changed, 62 insertions, 7 deletions
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 8dc0605a9ce9..13609e01f4b7 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 +152,44 @@ int xen_unmap_domain_mfn_range(struct vm_area_struct *vma, } EXPORT_SYMBOL_GPL(xen_unmap_domain_mfn_range); +static void __init xen_percpu_init(void *unused) +{ + struct vcpu_register_vcpu_info info; + struct vcpu_info *vcpup; + int err; + int cpu = get_cpu(); + + 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); + BUG_ON(err); + per_cpu(xen_vcpu, cpu) = vcpup; + + enable_percpu_irq(xen_events_irq, 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. @@ -209,13 +251,16 @@ 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; gnttab_init(); if (!xen_initial_domain()) @@ -225,6 +270,15 @@ static int __init xen_guest_init(void) } core_initcall(xen_guest_init); +static int __init xen_pm_init(void) +{ + pm_power_off = xen_power_off; + arm_pm_restart = xen_restart; + + return 0; +} +subsys_initcall(xen_pm_init); + static irqreturn_t xen_arm_callback(int irq, void *arg) { xen_hvm_evtchn_do_upcall(); @@ -239,12 +293,12 @@ 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_init, NULL, 0); return 0; } @@ -259,4 +313,5 @@ 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); |