Re: [edk2-devel] [PATCH v3 15/24] Ovmfpkg/AmdSvsmLib: Create AmdSvsmLib to handle SVSM related services

["Gerd Hoffmann" <kraxel@redhat.com>]

On Fri, Mar 08, 2024 at 09:29:43AM -0600, Tom Lendacky wrote:
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4654
> 
> Add initial support for the new AmdSvsmLib library to OvmfPkg. The initial
> implementation fully implements the library interfaces.
> 
> The SVSM presence check, AmdSvsmIsSvsmPresent(), determines the presence
> of an SVSM by checking if an SVSM has been advertised in the SEV-SNP
> Secrets Page.
> 
> The VMPL API, AmdSvsmSnpGetVmpl(), returns the VMPL level at which OVMF is
> currently running.
> 
> The CAA API, AmdSvsmSnpGetCaa(), returns the Calling Area Address when an
> SVSM is present, 0 otherwise.
> 
> The PVALIDATE API, AmdSvsmSnpPvalidate(), copies the PVALIDATE logic from
> the BaseMemEncryptSevLib library for the initial implementation. The
> BaseMemEncryptSevLib library will be changed to use this new API so that
> the decision as to whether the SVSM is needed to perform the operation
> can be isolated to this library.
> 
> The VMSA API, AmdSvsmSnpVmsaRmpAdjust(), copies the RMPUPDATE logic from
> the MpInitLib library for the initial implementation. The MpInitLib
> library will be changed to use this new API so that the decision as to
> whether the SVSM is needed to perform the operation can be isolated to
> this library.
> 
> Cc: Anatol Belski <anbelski@linux.microsoft.com>
> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
> Cc: Erdem Aktas <erdemaktas@google.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: Jianyong Wu <jianyong.wu@arm.com>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Laszlo Ersek <lersek@redhat.com>
> Cc: Michael Roth <michael.roth@amd.com>
> Cc: Min Xu <min.m.xu@intel.com>
> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>

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



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