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Date: Tue, 14 Feb 2023 10:12:17 +0100
From: "Gerd Hoffmann" <kraxel@redhat.com>
To: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: "Gupta, Pankaj" <pankaj.gupta@amd.com>, devel@edk2.groups.io,
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	"Michael D. Kinney" <michael.d.kinney@intel.com>,
	Oliver Steffen <osteffen@redhat.com>
Subject: Re: [edk2-devel] [PATCH v10 1/4] OvmfPkg: Add memory acceptance event in AmdSevDxe
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  Hi,

> A recent import found incompatibilities with measured boot only in
> SEV-SNP that we have disabled, but that's related to NVdata, which we
> deal with differently in GCE due to the cloud IVARS service and our
> allergy to SMM emulation. Should be unrelated.

Do you have any pointers on the IVARS service?  Documentation, guest
code, host code?

Background:  When moving to a SVSM-based setup where the svsm (with
vtpm emulation) runs in vmpl0 and the edk2 firmware in vmpl1 we might
likewise add a efi variable service to the svsm.

If something usable already exists we don't need to reinvent the wheel.

thanks & take care,
  Gerd