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UefiCpuPkg: Simplify the code to set smm page table as RO

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Simplify the code to set memory used by smm page table as RO.
Since memory used by smm page table are in PageTablePool list,
we only need to set all PageTablePool as ReadOnly in smm page
table itself. Also, we only need to flush tlb once after
setting all page table pool as Read Only.

Signed-off-by: Dun Tan <dun.tan@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
This commit is contained in:
Tan, Dun
2022-12-21 12:21:56 +08:00
committed by mergify[bot]
parent 0426115b67
commit 72a9386f67
4 changed files with 136 additions and 259 deletions
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UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h
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@@ -260,7 +260,6 @@ extern UINTN mNumberOfCpus;
extern EFI_SMM_CPU_PROTOCOL mSmmCpu;
extern EFI_MM_MP_PROTOCOL mSmmMp;
extern BOOLEAN m5LevelPagingNeeded;
extern BOOLEAN mIsReadOnlyPageTable;
///
/// The mode of the CPU at the time an SMI occurs