Re: [PATCH] KVM: SVM: Dump Virtual Machine Save Area (VMSA) to klog

[Paolo Bonzini]

On 7/28/22 07:09, Jarkko Sakkinen wrote:
> As Virtual Machine Save Area (VMSA) is essential in troubleshooting
> attestation, dump it to the klog with the KERN_DEBUG level of priority.
>
> Cc: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
> Suggested-by: Harald Hoyer <harald@xxxxxxxxxxx>
> Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxxx>
> ---
>   arch/x86/kvm/svm/sev.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
> index 0c240ed04f96..6d44aaba321a 100644
> --- a/arch/x86/kvm/svm/sev.c
> +++ b/arch/x86/kvm/svm/sev.c
> @@ -603,6 +603,9 @@ static int sev_es_sync_vmsa(struct vcpu_svm *svm)
>   	save->xss  = svm->vcpu.arch.ia32_xss;
>   	save->dr6  = svm->vcpu.arch.dr6;
>   
> +	pr_debug("Virtual Machine Save Area (VMSA):\n");
> +	print_hex_dump(KERN_CONT, "", DUMP_PREFIX_NONE, 16, 1, save, sizeof(*save), false);
> +
>   	return 0;
>   }
>   

Queued, thanks.

Paolo