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.przyw...@amd.com>
---
arch/x86/kvm/x86.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index c5a0d37..a148f4c 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1001,6 +1001,7 @@ 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:
--
1.6.1.3
--
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