Re: [PATCH v2 7/9] KVM: SVM: keep DR6 synchronized with vcpu->arch.dr6

[Peter Xu]

On Thu, May 07, 2020 at 07:50:09AM -0400, Paolo Bonzini wrote:
> @@ -267,7 +268,7 @@ void enter_svm_guest_mode(struct vcpu_svm *svm, u64 vmcb_gpa,
>  	svm->vmcb->save.rsp = nested_vmcb->save.rsp;
>  	svm->vmcb->save.rip = nested_vmcb->save.rip;
>  	svm->vmcb->save.dr7 = nested_vmcb->save.dr7;
> -	svm->vmcb->save.dr6 = nested_vmcb->save.dr6;
> +	svm->vcpu.arch.dr6  = nested_vmcb->save.dr6;

The rest looks very sane to me, but here I failed to figure out how arch.dr6
finally applied to save.dr6.  I saw it is applied in svm_vcpu_run() in the next
patch, but if that's the case then iiuc this commit may break bisection. Thanks,

-- 
Peter Xu