Commit e098223b authored by Jan Kiszka's avatar Jan Kiszka Committed by Paolo Bonzini

KVM: SVM: Sync g_pat with guest-written PAT value

When hardware supports the g_pat VMCB field, we can use it for emulating
the PAT configuration that the guest configures by writing to the
corresponding MSR.
Signed-off-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
Tested-by: default avatarJoerg Roedel <jroedel@suse.de>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 3c2e7f7d
...@@ -3350,6 +3350,16 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr) ...@@ -3350,6 +3350,16 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr)
case MSR_VM_IGNNE: case MSR_VM_IGNNE:
vcpu_unimpl(vcpu, "unimplemented wrmsr: 0x%x data 0x%llx\n", ecx, data); vcpu_unimpl(vcpu, "unimplemented wrmsr: 0x%x data 0x%llx\n", ecx, data);
break; break;
case MSR_IA32_CR_PAT:
if (npt_enabled) {
if (!kvm_mtrr_valid(vcpu, MSR_IA32_CR_PAT, data))
return 1;
vcpu->arch.pat = data;
svm_set_guest_pat(svm, &svm->vmcb->save.g_pat);
mark_dirty(svm->vmcb, VMCB_NPT);
break;
}
/* fall through */
default: default:
return kvm_set_msr_common(vcpu, msr); return kvm_set_msr_common(vcpu, msr);
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment