Received-SPF: pass (google.com: domain of linux-crypto-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Wed, 29 Apr 2020 13:23:15 +0200
From:   Joerg Roedel <joro@8bytes.org>
To:     Tom Lendacky <thomas.lendacky@amd.com>
Cc:     linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
        Herbert Xu <herbert@gondor.apana.org.au>,
        David Miller <davem@davemloft.net>,
        Borislav Petkov <bp@alien8.de>,
        Brijesh Singh <brijesh.singh@amd.com>
Subject: Re: [PATCH v2] crypto: ccp: Add support for SEV-ES to the PSP driver
Message-ID: <20200429112315.GO21900@8bytes.org>
References: <9530369b1f0be211ae2512a1ab9f54281a4420d9.1587491088.git.thomas.lendacky@amd.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <9530369b1f0be211ae2512a1ab9f54281a4420d9.1587491088.git.thomas.lendacky@amd.com>
User-Agent: Mutt/1.10.1 (2018-07-13)
Sender: linux-crypto-owner@vger.kernel.org
Precedence: bulk

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@amd.com>
> 
> ---
> 
> 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@suse.de>