diff options
| -rw-r--r-- | arch/x86/xen/enlighten.c | 24 | ||||
| -rw-r--r-- | arch/x86/xen/suspend.c | 6 | ||||
| -rw-r--r-- | arch/x86/xen/xen-ops.h | 1 | ||||
| -rw-r--r-- | drivers/xen/manage.c | 45 | ||||
| -rw-r--r-- | drivers/xen/platform-pci.c | 22 | ||||
| -rw-r--r-- | include/xen/xen-ops.h | 3 |
6 files changed, 90 insertions, 11 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index b211a04..127c95c 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1262,13 +1262,15 @@ static int init_hvm_pv_info(int *major, int *minor) return 0; } -static void __init init_shared_info(void) +void xen_hvm_init_shared_info(void) { + int cpu; struct xen_add_to_physmap xatp; - struct shared_info *shared_info_page; + static struct shared_info *shared_info_page = 0; - shared_info_page = (struct shared_info *) - extend_brk(PAGE_SIZE, PAGE_SIZE); + if (!shared_info_page) + shared_info_page = (struct shared_info *) + extend_brk(PAGE_SIZE, PAGE_SIZE); xatp.domid = DOMID_SELF; xatp.idx = 0; xatp.space = XENMAPSPACE_shared_info; @@ -1278,7 +1280,17 @@ static void __init init_shared_info(void) HYPERVISOR_shared_info = (struct shared_info *)shared_info_page; - per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0]; + /* 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. + * When xen_hvm_init_shared_info is run at boot time only vcpu 0 is + * online but xen_hvm_init_shared_info is run at resume time too and + * in that case multiple vcpus might be online. */ + for_each_online_cpu(cpu) { + per_cpu(xen_vcpu, cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu]; + } } static int __cpuinit xen_hvm_cpu_notify(struct notifier_block *self, @@ -1308,7 +1320,7 @@ static void __init xen_hvm_guest_init(void) if (r < 0) return; - init_shared_info(); + xen_hvm_init_shared_info(); if (xen_feature(XENFEAT_hvm_callback_vector)) xen_have_vector_callback = 1; diff --git a/arch/x86/xen/suspend.c b/arch/x86/xen/suspend.c index a9c6611..d07479c 100644 --- a/arch/x86/xen/suspend.c +++ b/arch/x86/xen/suspend.c @@ -26,6 +26,12 @@ void xen_pre_suspend(void) BUG(); } +void xen_hvm_post_suspend(int suspend_cancelled) +{ + xen_hvm_init_shared_info(); + xen_callback_vector(); +} + void xen_post_suspend(int suspend_cancelled) { xen_build_mfn_list_list(); diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h index 0d0e0e6..01c9dd3 100644 --- a/arch/x86/xen/xen-ops.h +++ b/arch/x86/xen/xen-ops.h @@ -39,6 +39,7 @@ void xen_enable_syscall(void); void xen_vcpu_restore(void); void xen_callback_vector(void); +void xen_hvm_init_shared_info(void); void __init xen_build_dynamic_phys_to_machine(void); diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c index af9c559..1799bd8 100644 --- a/drivers/xen/manage.c +++ b/drivers/xen/manage.c @@ -9,6 +9,7 @@ #include <linux/stop_machine.h> #include <linux/freezer.h> +#include <xen/xen.h> #include <xen/xenbus.h> #include <xen/grant_table.h> #include <xen/events.h> @@ -17,6 +18,7 @@ #include <asm/xen/hypercall.h> #include <asm/xen/page.h> +#include <asm/xen/hypervisor.h> enum shutdown_state { SHUTDOWN_INVALID = -1, @@ -33,10 +35,30 @@ enum shutdown_state { static enum shutdown_state shutting_down = SHUTDOWN_INVALID; #ifdef CONFIG_PM_SLEEP -static int xen_suspend(void *data) +static int xen_hvm_suspend(void *data) { + struct sched_shutdown r = { .reason = SHUTDOWN_suspend }; int *cancelled = data; + + BUG_ON(!irqs_disabled()); + + *cancelled = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r); + + xen_hvm_post_suspend(*cancelled); + gnttab_resume(); + + if (!*cancelled) { + xen_irq_resume(); + xen_timer_resume(); + } + + return 0; +} + +static int xen_suspend(void *data) +{ int err; + int *cancelled = data; BUG_ON(!irqs_disabled()); @@ -106,7 +128,10 @@ static void do_suspend(void) goto out_resume; } - err = stop_machine(xen_suspend, &cancelled, cpumask_of(0)); + if (xen_hvm_domain()) + err = stop_machine(xen_hvm_suspend, &cancelled, cpumask_of(0)); + else + err = stop_machine(xen_suspend, &cancelled, cpumask_of(0)); dpm_resume_noirq(PMSG_RESUME); @@ -255,7 +280,19 @@ static int shutdown_event(struct notifier_block *notifier, return NOTIFY_DONE; } -static int __init setup_shutdown_event(void) +static int __init __setup_shutdown_event(void) +{ + /* Delay initialization in the PV on HVM case */ + if (xen_hvm_domain()) + return 0; + + if (!xen_pv_domain()) + return -ENODEV; + + return xen_setup_shutdown_event(); +} + +int xen_setup_shutdown_event(void) { static struct notifier_block xenstore_notifier = { .notifier_call = shutdown_event @@ -266,4 +303,4 @@ static int __init setup_shutdown_event(void) } EXPORT_SYMBOL_GPL(xen_setup_shutdown_event); -subsys_initcall(setup_shutdown_event); +subsys_initcall(__setup_shutdown_event); diff --git a/drivers/xen/platform-pci.c b/drivers/xen/platform-pci.c index a0ee5d0..bdb44f2 100644 --- a/drivers/xen/platform-pci.c +++ b/drivers/xen/platform-pci.c @@ -31,6 +31,7 @@ #include <xen/xenbus.h> #include <xen/events.h> #include <xen/hvm.h> +#include <xen/xen-ops.h> #define DRV_NAME "xen-platform-pci" @@ -41,6 +42,7 @@ MODULE_LICENSE("GPL"); static unsigned long platform_mmio; static unsigned long platform_mmio_alloc; static unsigned long platform_mmiolen; +static uint64_t callback_via; unsigned long alloc_xen_mmio(unsigned long len) { @@ -85,13 +87,25 @@ static int xen_allocate_irq(struct pci_dev *pdev) "xen-platform-pci", pdev); } +static int platform_pci_resume(struct pci_dev *pdev) +{ + int err; + if (xen_have_vector_callback) + return 0; + err = xen_set_callback_via(callback_via); + if (err) { + dev_err(&pdev->dev, "platform_pci_resume failure!\n"); + return err; + } + return 0; +} + static int __devinit platform_pci_init(struct pci_dev *pdev, const struct pci_device_id *ent) { int i, ret; long ioaddr, iolen; long mmio_addr, mmio_len; - uint64_t callback_via; unsigned int max_nr_gframes; i = pci_enable_device(pdev); @@ -148,6 +162,9 @@ static int __devinit platform_pci_init(struct pci_dev *pdev, if (ret) goto out; xenbus_probe(NULL); + ret = xen_setup_shutdown_event(); + if (ret) + goto out; return 0; out: @@ -171,6 +188,9 @@ static struct pci_driver platform_driver = { .name = DRV_NAME, .probe = platform_pci_init, .id_table = platform_pci_tbl, +#ifdef CONFIG_PM + .resume_early = platform_pci_resume, +#endif }; static int __init platform_pci_module_init(void) diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h index 883a21b..46bc81e 100644 --- a/include/xen/xen-ops.h +++ b/include/xen/xen-ops.h @@ -7,6 +7,7 @@ DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu); void xen_pre_suspend(void); void xen_post_suspend(int suspend_cancelled); +void xen_hvm_post_suspend(int suspend_cancelled); void xen_mm_pin_all(void); void xen_mm_unpin_all(void); @@ -14,4 +15,6 @@ void xen_mm_unpin_all(void); void xen_timer_resume(void); void xen_arch_resume(void); +int xen_setup_shutdown_event(void); + #endif /* INCLUDE_XEN_OPS_H */ |
