[PATCH 4/6] Implement Hyper-V MSRs

[Alexander Graf <agraf@suse.de>]

Hyper-V uses some MSRs, some of which are actually reserved for BIOS usage.

But let's be nice today and have it its way, because otherwise it fails
terribly.

For MSRs where I could find a name I used the name, otherwise they're just
added in their hex form for now.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 arch/x86/kvm/svm.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index ef43a18..30e6b43 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1932,6 +1932,7 @@ static int svm_get_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 *data)
 		*data = svm->hsave_msr;
 		break;
 	case MSR_VM_CR:
+	case 0x40000081:
 		*data = 0;
 		break;
 	case MSR_IA32_UCODE_REV:
@@ -2034,6 +2035,10 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, unsigned ecx, u64 data)
 	case MSR_VM_HSAVE_PA:
 		svm->hsave_msr = data;
 		break;
+	case MSR_VM_CR:
+	case MSR_VM_IGNNE:
+	case MSR_K8_HWCR:
+		break;
 	default:
 		return kvm_set_msr_common(vcpu, ecx, data);
 	}
-- 
1.6.0.2