f6bf37c171
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>
57 lines
1.2 KiB
INI
57 lines
1.2 KiB
INI
## @file
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# Library provides the helper functions for SEV guest
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#
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# Copyright (c) 2020 - 2024, Advanced Micro Devices. All rights reserved.<BR>
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#
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# SPDX-License-Identifier: BSD-2-Clause-Patent
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#
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#
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##
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[Defines]
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INF_VERSION = 1.25
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BASE_NAME = SecMemEncryptSevLib
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FILE_GUID = 046388b4-430e-4e61-88f6-51ea21db2632
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MODULE_TYPE = BASE
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VERSION_STRING = 1.0
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LIBRARY_CLASS = MemEncryptSevLib|SEC
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#
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# The following information is for reference only and not required by the build
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# tools.
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#
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# VALID_ARCHITECTURES = IA32 X64
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#
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[Packages]
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MdeModulePkg/MdeModulePkg.dec
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MdePkg/MdePkg.dec
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OvmfPkg/OvmfPkg.dec
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UefiCpuPkg/UefiCpuPkg.dec
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[Sources]
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SecMemEncryptSevLibInternal.c
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[Sources.X64]
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X64/MemEncryptSevLib.c
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X64/SecVirtualMemory.c
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X64/SecSnpSystemRamValidate.c
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X64/SnpPageStateChangeInternal.c
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X64/VirtualMemory.c
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X64/VirtualMemory.h
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[Sources.IA32]
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Ia32/MemEncryptSevLib.c
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[LibraryClasses]
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BaseLib
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CpuLib
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DebugLib
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PcdLib
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CcExitLib
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AmdSvsmLib
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[FixedPcd]
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gUefiCpuPkgTokenSpaceGuid.PcdSevEsWorkAreaBase
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gUefiOvmfPkgTokenSpaceGuid.PcdOvmfWorkAreaBase
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