[edk2-devel] [PATCH v7 09/31] OvmfPkg/SecMain: register GHCB gpa for the SEV-SNP guest

[Gerd Hoffmann]

  Hi,

> Good point, there is no reason to read and restore the old GHCB, I will
> remove it in next version. The function does not set this as a GHCB address,
> it send request to hypervisor saying that it would like to use this address.
> If hypervisor is not okay with the address then it may recommend something
> else. We don't support working with the hypervisor preferred address.
> Setting the GHCB address code is common between Snp and Es but checking with
> hypervisor whether its okay to use is new in the GHCBv2 and is SNP specific.

A comment explaining those GHCBv1 vs. GHCBv2 differences would be great.

thanks,
  Gerd



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