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Commit c7ac679c authored by Joerg Roedel's avatar Joerg Roedel Committed by Avi Kivity
Browse files

KVM: emulate access to MSR_IA32_MCG_CTL 



Injecting an GP when accessing this MSR lets Windows crash when running some
stress test tools in KVM.  So this patch emulates access to this MSR.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarMarkus Rechberger <markus.rechberger@amd.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 674eea0f

arch/x86/kvm/x86.c

+5 −0
Original line number Diff line number Diff line
@@ -487,6 +487,10 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data) 
		pr_unimpl(vcpu, "%s: MSR_IA32_MCG_STATUS 0x%llx, nop\n",

			__FUNCTION__, data);

		break;

	case MSR_IA32_MCG_CTL:

		pr_unimpl(vcpu, "%s: MSR_IA32_MCG_CTL 0x%llx, nop\n",

			__FUNCTION__, data);

		break;

	case MSR_IA32_UCODE_REV:

	case MSR_IA32_UCODE_WRITE:

	case 0x200 ... 0x2ff: /* MTRRs */
@@ -529,6 +533,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) 
	case MSR_IA32_MC0_CTL:

	case MSR_IA32_MCG_STATUS:

	case MSR_IA32_MCG_CAP:

	case MSR_IA32_MCG_CTL:

	case MSR_IA32_MC0_MISC:

	case MSR_IA32_MC0_MISC+4:

	case MSR_IA32_MC0_MISC+8: