KVM: Ignore reads to K7 EVNTSEL MSRs

In commit 7fe29e0faacb650d31b9e9f538203a157bec821d we ignored the
reads to the P6 EVNTSEL MSRs. That fixed crashes on Intel machines.

Ignore the reads to K7 EVNTSEL MSRs as well to fix this on AMD
hosts.

This fixes Kaspersky antivirus crashing Windows guests on AMD hosts.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 249540f985132f79922736a8dd49f8febeb71bdf..fe5474aec41a0c399711f978aeeccab9a970ac13 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -898,6 +898,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
        case MSR_VM_HSAVE_PA:
        case MSR_P6_EVNTSEL0:
        case MSR_P6_EVNTSEL1:
+       case MSR_K7_EVNTSEL0:
                data = 0;
                break;
        case MSR_MTRRcap: