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

From: Herbert Xu
Date: Thu Apr 30 2020 - 01:30:48 EST


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.
> ---
> drivers/crypto/ccp/sev-dev.c | 43 ++++++++++++++++++++++++++++++++++++
> include/linux/psp-sev.h | 2 ++
> include/uapi/linux/psp-sev.h | 2 ++
> 3 files changed, 47 insertions(+)

Patch applied. Thanks.
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt