Re: [PATCH v2] crypto: ccp: Add support for SEV-ES to the PSP driver

[Joerg Roedel]

On Tue, Apr 21, 2020 at 12:44:49PM -0500, Tom Lendacky wrote:
> To provide support for SEV-ES, the hypervisor must provide an area of
> memory to the PSP. Once this Trusted Memory Region (TMR) is provided to
> the PSP, the contents of this area of memory are no longer available to
> the x86.
> 
> Update the PSP driver to allocate a 1MB region for the TMR that is 1MB
> aligned and then provide it to the PSP through the SEV INIT command.
> 
> Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
> 
> ---
> 
> Changes since v1:
> - No need to over-allocate the memory area to obtain the required
>   alignment when using the page allocator.

Reviewed-by: Joerg Roedel <jroedel@xxxxxxx>