Re: [PATCH 1/2] KVM: SEV: Pin guest memory for write for RECEIVE_UPDATE_DATA

[Brijesh Singh]

On 9/14/21 4:09 PM, Sean Christopherson wrote:
> Require the target guest page to be writable when pinning memory for
> RECEIVE_UPDATE_DATA.  Per the SEV API, the PSP writes to guest memory:
>
>    The result is then encrypted with GCTX.VEK and written to the memory
>    pointed to by GUEST_PADDR field.
>
> Fixes: 15fb7de1a7f5 ("KVM: SVM: Add KVM_SEV_RECEIVE_UPDATE_DATA command")
> Cc: stable@xxxxxxxxxxxxxxx
> Cc: Peter Gonda <pgonda@xxxxxxxxxx>
> Cc: Marc Orr <marcorr@xxxxxxxxxx>
> Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
> Cc: Brijesh Singh <brijesh.singh@xxxxxxx>
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>

Reviewed-by: Brijesh Singh <brijesh.singh@xxxxxxx>

thanks