From: Amit Shah <amit.shah@redhat.com>
Date: Mon, 3 Aug 2009 17:57:56 +0000 (-0300)
Subject: KVM: Ignore reads to K7 EVNTSEL MSRs
X-Git-Tag: v2.6.30.6~46
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=424db486d8dd65c6ddc8b9e05dbe0a87eb5c8a87;p=thirdparty%2Fkernel%2Fstable.git

KVM: Ignore reads to K7 EVNTSEL MSRs

(cherry picked from commit 9e6996240afcbe61682eab8eeaeb65c34333164d)

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 3877da1d0e619..607779f776a85 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -900,6 +900,7 @@ 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: