From: Mingwei Zhang <mizhang@google.com>

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>
---
 arch/x86/events/core.c            | 1 +
 arch/x86/include/asm/perf_event.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index b8583a6962f1..d58aa316b65a 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -3130,6 +3130,7 @@ 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_GPL(perf_get_x86_pmu_capability);
 
diff --git a/arch/x86/include/asm/perf_event.h b/arch/x86/include/asm/perf_event.h
index 70d1d94aca7e..74db361a53d3 100644
--- a/arch/x86/include/asm/perf_event.h
+++ b/arch/x86/include/asm/perf_event.h
@@ -292,6 +292,7 @@ struct x86_pmu_capability {
 	unsigned int	events_mask;
 	int		events_mask_len;
 	unsigned int	pebs_ept	:1;
+	unsigned int	mediated	:1;
 };
 
 /*
-- 
2.50.1.565.gc32cd1483b-goog