From 7fe29e0faacb650d31b9e9f538203a157bec821d Mon Sep 17 00:00:00 2001 From: Amit Shah <amit.shah@redhat.com> Date: Fri, 20 Mar 2009 12:39:00 +0530 Subject: [PATCH] KVM: x86: Ignore reads to EVNTSEL MSRs We ignore writes to the performance counters and performance event selector registers already. Kaspersky antivirus reads the eventsel MSR causing it to crash with the current behaviour. Return 0 as data when the eventsel registers are read to stop the crash. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> --- arch/x86/kvm/x86.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 41123fc8613e..c0ae5e6cba9b 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -895,6 +895,8 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) case MSR_IA32_LASTINTFROMIP: case MSR_IA32_LASTINTTOIP: case MSR_VM_HSAVE_PA: + case MSR_P6_EVNTSEL0: + case MSR_P6_EVNTSEL1: data = 0; break; case MSR_MTRRcap: -- 2.34.1