From: Avi Kivity <avi@redhat.com>
Date: Mon, 29 Dec 2008 15:32:28 +0000 (+0200)
Subject: KVM: Fallback support for MSR_VM_HSAVE_PA
X-Git-Tag: firefly_0821_release~15239^2~80
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=61a6bd672bda3b9468bf5895c1be085c4e481138;p=firefly-linux-kernel-4.4.55.git

KVM: Fallback support for MSR_VM_HSAVE_PA

Since we advertise MSR_VM_HSAVE_PA, userspace will attempt to read it
even on Intel.  Implement fake support for this MSR to avoid the
warnings.

Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2a4f3a697343..c3fbe8c55c13 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -742,6 +742,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
 		break;
 	case MSR_IA32_UCODE_REV:
 	case MSR_IA32_UCODE_WRITE:
+	case MSR_VM_HSAVE_PA:
 		break;
 	case 0x200 ... 0x2ff:
 		return set_msr_mtrr(vcpu, msr, data);
@@ -863,6 +864,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
 	case MSR_IA32_LASTBRANCHTOIP:
 	case MSR_IA32_LASTINTFROMIP:
 	case MSR_IA32_LASTINTTOIP:
+	case MSR_VM_HSAVE_PA:
 		data = 0;
 		break;
 	case MSR_MTRRcap: