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UefiCpuPkg/AmdSvsmLib: Create the AmdSvsmLib library to support an SVSM

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BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4654

In order to support an SEV-SNP guest running under an SVSM at VMPL1 or
lower, a new library must be created.

This library includes an interface to detect if running under an SVSM, an
interface to return the current VMPL, an interface to perform memory
validation and an interface to set or clear the attribute that allows a
page to be used as a VMSA.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Acked-by: Ray Ni <ray.ni@intel.com>
This commit is contained in:
Tom Lendacky
2024-03-08 07:31:32 -08:00
committed by mergify[bot]
parent c0bf953fe8
commit 30d274e354
6 changed files with 255 additions and 1 deletions
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UefiCpuPkg/UefiCpuPkg.dec
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@@ -53,6 +53,9 @@
## @libraryclass Provides function to support CcExit processing.
CcExitLib|Include/Library/CcExitLib.h
## @libraryclass Provides function to support AmdSvsm processing.
AmdSvsmLib|Include/Library/AmdSvsmLib.h
## @libraryclass Provides function to get CPU cache information.
CpuCacheInfoLib|Include/Library/CpuCacheInfoLib.h