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@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Like Xu <like.xu@xxxxxxxxxxxxxxx> --- 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
