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audk/OvmfPkg/Library/AmdSvsmLib
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Tom Lendacky 28fecae8a3 OvmfPkg/AmdSvsmLib: Add support for the SVSM create/delete vCPU calls 
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4654

The RMPADJUST instruction is used to alter the VMSA attribute of a page,
but the VMSA attribute can only be changed when running at VMPL0. When
an SVSM is present, use the SVSM_CORE_CREATE_VCPU and SVSM_CORE_DELTE_VCPU
calls to add or remove the VMSA attribute on a page instead of issuing
the RMPADJUST instruction directly.

Implement the AmdSvsmSnpVmsaRmpAdjust() API to perform the proper operation
to update the VMSA attribute.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
 		2024-04-17 20:04:41 +00:00
..
AmdSvsmLib.c OvmfPkg/AmdSvsmLib: Add support for the SVSM create/delete vCPU calls 2024-04-17 20:04:41 +00:00
AmdSvsmLib.inf
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