2015-04-13 08:58+0200, Jan Kiszka: > 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: Jan Kiszka <[email protected]> > --- > > RFC because it is only compile-tested. > > diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c > @@ -3245,6 +3245,15 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct > msr_data *msr) > case MSR_VM_IGNNE: > vcpu_unimpl(vcpu, "unimplemented wrmsr: 0x%x data 0x%llx\n", > ecx, data); > break; > + case MSR_IA32_CR_PAT: > + if (npt_enabled) { > + if (!kvm_mtrr_valid(vcpu, MSR_IA32_CR_PAT, data)) > + return 1; > + svm->vmcb->save.g_pat = data; > + vcpu->arch.pat = data;
Disregarding my Reviewed-by, the code is missing: mark_dirty(svm->vmcb, VMCB_NPT); Also, Tested-by: Radim Krčmář <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
