From 270c6c79f4e15e599f47174ecedad932463af7a2 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Thu, 16 Feb 2012 14:44:11 +0200 Subject: [PATCH] KVM: x86 emulator: correctly mask pmc index bits in RDPMC instruction emulation Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity --- arch/x86/kvm/pmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c index 7aad544..3e48c1d 100644 --- a/arch/x86/kvm/pmu.c +++ b/arch/x86/kvm/pmu.c @@ -413,7 +413,7 @@ int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data) struct kvm_pmc *counters; u64 ctr; - pmc &= (3u << 30) - 1; + pmc &= ~(3u << 30); if (!fixed && pmc >= pmu->nr_arch_gp_counters) return 1; if (fixed && pmc >= pmu->nr_arch_fixed_counters) -- 2.7.4