diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/hyperv/hv_init.c | 15 | ||||
| -rw-r--r-- | arch/x86/include/asm/mshyperv.h | 1 |
2 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index 50ff030d9224..caaf4dce99bf 100644 --- a/arch/x86/hyperv/hv_init.c +++ b/arch/x86/hyperv/hv_init.c @@ -7,6 +7,7 @@ * Author : K. Y. Srinivasan <kys@microsoft.com> */ +#include <linux/acpi.h> #include <linux/efi.h> #include <linux/types.h> #include <asm/apic.h> @@ -45,6 +46,14 @@ void *hv_alloc_hyperv_page(void) } EXPORT_SYMBOL_GPL(hv_alloc_hyperv_page); +void *hv_alloc_hyperv_zeroed_page(void) +{ + BUILD_BUG_ON(PAGE_SIZE != HV_HYP_PAGE_SIZE); + + return (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO); +} +EXPORT_SYMBOL_GPL(hv_alloc_hyperv_zeroed_page); + void hv_free_hyperv_page(unsigned long addr) { free_page(addr); @@ -437,3 +446,9 @@ bool hv_is_hyperv_initialized(void) return hypercall_msr.enable; } EXPORT_SYMBOL_GPL(hv_is_hyperv_initialized); + +bool hv_is_hibernation_supported(void) +{ + return acpi_sleep_state_supported(ACPI_STATE_S4); +} +EXPORT_SYMBOL_GPL(hv_is_hibernation_supported); diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h index f4138aeb4280..6b79515abb82 100644 --- a/arch/x86/include/asm/mshyperv.h +++ b/arch/x86/include/asm/mshyperv.h @@ -219,6 +219,7 @@ static inline struct hv_vp_assist_page *hv_get_vp_assist_page(unsigned int cpu) void __init hyperv_init(void); void hyperv_setup_mmu_ops(void); void *hv_alloc_hyperv_page(void); +void *hv_alloc_hyperv_zeroed_page(void); void hv_free_hyperv_page(unsigned long addr); void hyperv_reenlightenment_intr(struct pt_regs *regs); void set_hv_tscchange_cb(void (*cb)(void)); |