We ignore writes to the perfctr msrs. Ignore reads as well. Kaspersky antivirus crashes Windows guests if it can't read these MSRs. Signed-off-by: Amit Shah <amit.shah@xxxxxxxxxx> --- arch/x86/kvm/x86.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index af53f64..f358bb6 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1045,9 +1045,12 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) case MSR_K8_SYSCFG: case MSR_K7_HWCR: case MSR_VM_HSAVE_PA: + case MSR_P6_PERFCTR0: + case MSR_P6_PERFCTR1: case MSR_P6_EVNTSEL0: case MSR_P6_EVNTSEL1: case MSR_K7_EVNTSEL0: + case MSR_K7_PERFCTR0: case MSR_K8_INT_PENDING_MSG: data = 0; break; -- 1.6.2.5 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html