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perf/x86/core: Plumb mediated PMU capability from x86_pmu to x86_pmu_cap

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Plumb mediated PMU capability to x86_pmu_cap in order to let any kernel
entity such as KVM know that host PMU support mediated PMU mode and has
the implementation.

Signed-off-by: Mingwei Zhang <mizhang@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Xudong Hao <xudong.hao@intel.com>
Link: https://patch.msgid.link/20251206001720.468579-12-seanjc@google.com
This commit is contained in:
Mingwei Zhang 2025-12-05 16:16:47 -08:00 committed by Peter Zijlstra
parent b456a6ba57
commit c8824a95d9
2 changed files with 2 additions and 0 deletions
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1
arch/x86/events/core.c
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@ -3110,6 +3110,7 @@ void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap)
cap->events_mask = (unsigned int)x86_pmu.events_maskl;
cap->events_mask_len = x86_pmu.events_mask_len;
cap->pebs_ept = x86_pmu.pebs_ept;
cap->mediated = !!(pmu.capabilities & PERF_PMU_CAP_MEDIATED_VPMU);
}
EXPORT_SYMBOL_FOR_KVM(perf_get_x86_pmu_capability);

1
arch/x86/include/asm/perf_event.h
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@ -301,6 +301,7 @@ struct x86_pmu_capability {
unsigned int events_mask;
int events_mask_len;
unsigned int pebs_ept :1;
unsigned int mediated :1;
};
/*