From: Kan Liang kan.liang@linux.intel.com
Apply the PERF_PMU_CAP_MEDIATED_VPMU for Intel core PMU. It only indicates that the perf side of core PMU is ready to support the passthrough vPMU. Besides the capability, the hypervisor should still need to check the PMU version and other capabilities to decide whether to enable the mediated vPMU.
Signed-off-by: Kan Liang kan.liang@linux.intel.com Signed-off-by: Mingwei Zhang mizhang@google.com --- arch/x86/events/intel/core.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index e86333eee266..ab74fdfa6a66 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -4943,6 +4943,8 @@ static void intel_pmu_check_hybrid_pmus(struct x86_hybrid_pmu *pmu) else pmu->intel_ctrl &= ~(1ULL << GLOBAL_CTRL_EN_PERF_METRICS);
+ pmu->pmu.capabilities |= PERF_PMU_CAP_MEDIATED_VPMU; + intel_pmu_check_event_constraints(pmu->event_constraints, pmu->cntr_mask64, pmu->fixed_cntr_mask64, @@ -6535,6 +6537,9 @@ __init int intel_pmu_init(void) pr_cont(" AnyThread deprecated, "); }
+ /* The perf side of core PMU is ready to support the mediated vPMU. */ + x86_get_pmu(smp_processor_id())->capabilities |= PERF_PMU_CAP_MEDIATED_VPMU; + /* * Install the hw-cache-events table: */