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authorAndre Przywara <andre.przywara@amd.com>2009-06-24 12:44:34 +0200
committerAvi Kivity <avi@redhat.com>2009-09-10 08:33:03 +0300
commit1fdbd48c242db996107f72ae4140ffe8163e26a8 (patch)
tree39180cfe8ba8268d7c67713446d78f1e19dfd5b0
parent8f1589d95e5eab1ed287f217a33656e922cdbdd0 (diff)
downloadop-kernel-dev-1fdbd48c242db996107f72ae4140ffe8163e26a8.zip
op-kernel-dev-1fdbd48c242db996107f72ae4140ffe8163e26a8.tar.gz
KVM: ignore reads from AMDs C1E enabled MSR
If the Linux kernel detects an C1E capable AMD processor (K8 RevF and higher), it will access a certain MSR on every attempt to go to halt. Explicitly handle this read and return 0 to let KVM run a Linux guest with the native AMD host CPU propagated to the guest. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
-rw-r--r--arch/x86/kvm/x86.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index cae5b12..6aace61 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1038,6 +1038,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
case MSR_P6_EVNTSEL0:
case MSR_P6_EVNTSEL1:
case MSR_K7_EVNTSEL0:
+ case MSR_K8_INT_PENDING_MSG:
data = 0;
break;
case MSR_MTRRcap:
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