diff options
Diffstat (limited to 'arch/x86/hyperv')
| -rw-r--r-- | arch/x86/hyperv/hv_apic.c | 16 | ||||
| -rw-r--r-- | arch/x86/hyperv/hv_init.c | 21 |
2 files changed, 34 insertions, 3 deletions
diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c index e01078e93dd3..40e0e322161d 100644 --- a/arch/x86/hyperv/hv_apic.c +++ b/arch/x86/hyperv/hv_apic.c @@ -194,10 +194,20 @@ do_ex_hypercall: static bool __send_ipi_one(int cpu, int vector) { - struct cpumask mask = CPU_MASK_NONE; + int vp = hv_cpu_number_to_vp_number(cpu); - cpumask_set_cpu(cpu, &mask); - return __send_ipi_mask(&mask, vector); + trace_hyperv_send_ipi_one(cpu, vector); + + if (!hv_hypercall_pg || (vp == VP_INVAL)) + return false; + + if ((vector < HV_IPI_LOW_VECTOR) || (vector > HV_IPI_HIGH_VECTOR)) + return false; + + if (vp >= 64) + return __send_ipi_mask_ex(cpumask_of(cpu), vector); + + return !hv_do_fast_hypercall16(HVCALL_SEND_IPI, vector, BIT_ULL(vp)); } static void hv_send_ipi(int cpu, int vector) diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c index 2db3972c0e0f..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); @@ -311,6 +320,12 @@ void __init hyperv_init(void) hypercall_msr.guest_physical_address = vmalloc_to_pfn(hv_hypercall_pg); wrmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64); + /* + * Ignore any errors in setting up stimer clockevents + * as we can run with the LAPIC timer as a fallback. + */ + (void)hv_stimer_alloc(); + hv_apic_init(); x86_init.pci.arch_init = hv_pci_init; @@ -431,3 +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); |