Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 14c9ba1a2ca64137de148968823dc20988dcaa4c
https://github.com/tianocore/edk2/commit/14c9ba1a2ca64137de148968823dc20988dcaa4c
Author: Zhiguang Liu <zhiguang....@intel.com>
Date: 2024-09-11 (Wed, 11 Sep 2024)
Changed paths:
M IntelFsp2Pkg/FspSecCore/Fsp24SecCoreM.inf
M IntelFsp2Pkg/FspSecCore/FspSecCoreM.inf
M IntelFsp2Pkg/FspSecCore/Ia32/Fsp24ApiEntryM.nasm
M IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryM.nasm
M IntelFsp2Pkg/FspSecCore/X64/Fsp24ApiEntryM.nasm
M IntelFsp2Pkg/FspSecCore/X64/FspApiEntryM.nasm
M IntelFsp2Pkg/IntelFsp2Pkg.dec
M IntelFsp2Pkg/Library/BaseFspCommonLib/FspCommonLib.c
M IntelFsp2Pkg/Library/BaseFspSwitchStackLib/BaseFspSwitchStackLib.inf
M IntelFsp2Pkg/Library/BaseFspSwitchStackLib/Ia32/Stack.nasm
M IntelFsp2Pkg/Library/BaseFspSwitchStackLib/X64/Stack.nasm
Log Message:
-----------
IntelFsp2Pkg: Support FSP API to save and restore page table
A potential issue may happen when FSP creates/changes page table while
bootloader doesn't expect page table being changed in FSP.
Current, FSP API support to save/restore stack, IDT and general purpose
registers. Following the same pattern, add save/restore page table
support to solve this issue.
Note that this feature only impacts FSP API mode, and is controlled
by PCD PcdFspSaveRestorePageTableEnable. For compatibility, the PCD
default value is set as FALSE.
Signed-off-by: Zhiguang Liu <zhiguang....@intel.com>
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