diff options
Diffstat (limited to 'arch/x86/hyperv/hv_apic.c')
| -rw-r--r-- | arch/x86/hyperv/hv_apic.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c index 3e0de61f1a7c..192b6ad6a361 100644 --- a/arch/x86/hyperv/hv_apic.c +++ b/arch/x86/hyperv/hv_apic.c @@ -93,6 +93,40 @@ static void hv_apic_eoi_write(u32 reg, u32 val) /* * IPI implementation on Hyper-V. */ +static bool __send_ipi_mask_ex(const struct cpumask *mask, int vector) +{ + struct ipi_arg_ex **arg; + struct ipi_arg_ex *ipi_arg; + unsigned long flags; + int nr_bank = 0; + int ret = 1; + + local_irq_save(flags); + arg = (struct ipi_arg_ex **)this_cpu_ptr(hyperv_pcpu_input_arg); + + ipi_arg = *arg; + if (unlikely(!ipi_arg)) + goto ipi_mask_ex_done; + + ipi_arg->vector = vector; + ipi_arg->reserved = 0; + ipi_arg->vp_set.valid_bank_mask = 0; + + if (!cpumask_equal(mask, cpu_present_mask)) { + ipi_arg->vp_set.format = HV_GENERIC_SET_SPARSE_4K; + nr_bank = cpumask_to_vpset(&(ipi_arg->vp_set), mask); + } + if (!nr_bank) + ipi_arg->vp_set.format = HV_GENERIC_SET_ALL; + + ret = hv_do_rep_hypercall(HVCALL_SEND_IPI_EX, 0, nr_bank, + ipi_arg, NULL); + +ipi_mask_ex_done: + local_irq_restore(flags); + return ((ret == 0) ? true : false); +} + static bool __send_ipi_mask(const struct cpumask *mask, int vector) { int cur_cpu, vcpu; @@ -110,6 +144,9 @@ static bool __send_ipi_mask(const struct cpumask *mask, int vector) if ((vector < HV_IPI_LOW_VECTOR) || (vector > HV_IPI_HIGH_VECTOR)) return false; + if ((ms_hyperv.hints & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) + return __send_ipi_mask_ex(mask, vector); + local_irq_save(flags); arg = (struct ipi_arg_non_ex **)this_cpu_ptr(hyperv_pcpu_input_arg); @@ -193,7 +230,10 @@ static void hv_send_ipi_self(int vector) void __init hv_apic_init(void) { if (ms_hyperv.hints & HV_X64_CLUSTER_IPI_RECOMMENDED) { - pr_info("Hyper-V: Using IPI hypercalls\n"); + if ((ms_hyperv.hints & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) + pr_info("Hyper-V: Using ext hypercalls for IPI\n"); + else + pr_info("Hyper-V: Using IPI hypercalls\n"); /* * Set the IPI entry points. */ |