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Date: Thu, 14 Oct 2021 09:09:25 +0200
From: "Gerd Hoffmann" <kraxel@redhat.com>
To: Brijesh Singh <brijesh.singh@amd.com>
Cc: devel@edk2.groups.io, James Bottomley <jejb@linux.ibm.com>,
	Min Xu <min.m.xu@intel.com>, Jiewen Yao <jiewen.yao@intel.com>,
	Tom Lendacky <thomas.lendacky@amd.com>,
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	Ard Biesheuvel <ardb+tianocore@kernel.org>,
	Erdem Aktas <erdemaktas@google.com>,
	Michael Roth <Michael.Roth@amd.com>
Subject: Re: [PATCH v9 05/32] OvmfPkg: reserve SNP secrets page
Message-ID: <20211014070925.o7n6ovcwwtjepeh4@sirius.home.kraxel.org>
References: <20211013165713.727815-1-brijesh.singh@amd.com>
 <20211013165713.727815-6-brijesh.singh@amd.com>
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On Wed, Oct 13, 2021 at 11:56:46AM -0500, Brijesh Singh wrote:
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275
> 
> During the SNP guest launch sequence, a special secrets page needs to be
> inserted by the VMM. The PSP will populate the page; it will contain the
> VM Platform Communication Key (VMPCKs) used by the guest to send and
> receive secure messages to the PSP.
> 
> The purpose of the secrets page in the SEV-SNP is different from the one
> used in SEV guests. In SEV, the secrets page contains the guest owner's
> private data after the remote attestation.

Acked-by: Gerd Hoffmann <kraxel@redhat.com>