Re: [edk2-devel] [PATCH v3 17/24] OvmfPkg/BaseMemEncryptSevLib: Use AmdSvsmSnpPvalidate() to validate pages

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

On Fri, Mar 08, 2024 at 09:29:45AM -0600, Tom Lendacky wrote:
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4654
> 
> The PVALIDATE instruction is used to change the SNP validation of a page,
> but that can only be done when running at VMPL0. To prepare for running at
> a less priviledged VMPL, use the AmdSvsmLib library API to perform the
> PVALIDATE. The AmdSvsmLib library will perform the proper operation on
> behalf of the caller.
> 
> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
> Cc: Erdem Aktas <erdemaktas@google.com>
> Cc: Gerd Hoffmann <kraxel@redhat.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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