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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20200430052953.GB11738@gondor.apana.org.au>
Date:   Thu, 30 Apr 2020 15:29:53 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Tom Lendacky <thomas.lendacky@....com>
Cc:     linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
        David Miller <davem@...emloft.net>,
        Joerg Roedel <joro@...tes.org>, Borislav Petkov <bp@...en8.de>,
        Brijesh Singh <brijesh.singh@....com>
Subject: Re: [PATCH v2] crypto: ccp: Add support for SEV-ES to the PSP driver

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@....com>
> 
> ---
> 
> 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@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt