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Subject[PATCH] KVM: x86/pmu: Add '.exclude_hv = 1' for guest perf_event
Date
To emulate PMC counter for guest, KVM would create an
event on the host with 'exclude_guest=0, exclude_hv=0'
which simply makes no sense and is utterly broken.

To keep perf semantics consistent, any event created by
pmc_reprogram_counter() should both set exclude_hv and
exclude_host in the KVM context.

Message-ID: <20200811084548.GW3982@worktop.programming.kicks-ass.net>
Signed-off-by: Like Xu <like.xu@linux.intel.com>
---
arch/x86/kvm/pmu.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index 67741d2a0308..6a30763a10d7 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -108,6 +108,7 @@ static void pmc_reprogram_counter(struct kvm_pmc *pmc, u32 type,
.exclude_host = 1,
.exclude_user = exclude_user,
.exclude_kernel = exclude_kernel,
+ .exclude_hv = 1,
.config = config,
};

--
2.21.3
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