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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>
hifive-unleashed-5.1
Andre Przywara 2009-06-24 12:44:34 +02:00 committed by Avi Kivity
parent 8f1589d95e
commit 1fdbd48c24
1 changed files with 1 additions and 0 deletions
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arch/x86/kvm/x86.c
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@ -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: