Topdown support is enumerated via IA32_PERF_CAPABILITIES[bit 15]. Enable this bit for guest when the feature is available on host. Co-developed-by: Yang Weijiang <weijiang.yang@xxxxxxxxx> Signed-off-by: Yang Weijiang <weijiang.yang@xxxxxxxxx> Signed-off-by: Dapeng Mi <dapeng1.mi@xxxxxxxxxxxxxxx> --- arch/x86/kvm/vmx/pmu_intel.c | 3 +++ arch/x86/kvm/vmx/vmx.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/arch/x86/kvm/vmx/pmu_intel.c b/arch/x86/kvm/vmx/pmu_intel.c index 04ccb8c6f7e4..5783cde00054 100644 --- a/arch/x86/kvm/vmx/pmu_intel.c +++ b/arch/x86/kvm/vmx/pmu_intel.c @@ -614,6 +614,9 @@ static void intel_pmu_refresh(struct kvm_vcpu *vcpu) (((1ull << pmu->nr_arch_fixed_counters) - 1) << INTEL_PMC_IDX_FIXED)); pmu->global_ctrl_mask = counter_mask; + if (intel_pmu_metrics_is_enabled(vcpu)) + pmu->global_ctrl_mask &= ~(1ULL << GLOBAL_CTRL_EN_PERF_METRICS); + /* * GLOBAL_STATUS and GLOBAL_OVF_CONTROL (a.k.a. GLOBAL_STATUS_RESET) * share reserved bit definitions. The kernel just happens to use diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 72e3943f3693..5686a74c14bb 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7850,6 +7850,8 @@ static u64 vmx_get_perf_capabilities(void) perf_cap &= ~PERF_CAP_PEBS_BASELINE; } + perf_cap |= host_perf_cap & PMU_CAP_PERF_METRICS; + return perf_cap; } -- 2.34.1
