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UefiCpuPkg/CpuPageTableLib: Enhance function header for PageTableMap() 

PageTableMap() only modifies the PageTable root pointer when creating from zero.
Explicitly explain it in function header.

Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
This commit is contained in:
Zhiguang Liu 2024-01-17 11:16:34 +08:00 committed by mergify[bot]
parent 2ca8d55974
commit 2f4b07b668
2 changed files with 2 additions and 0 deletions
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1
UefiCpuPkg/Include/Library/CpuPageTableLib.h
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@ -67,6 +67,7 @@ typedef enum {
Create or update page table to map [LinearAddress, LinearAddress + Length) with specified attribute.
@param[in, out] PageTable The pointer to the page table to update, or pointer to NULL if a new page table is to be created.
If not pointer to NULL, the value it points to won't be changed in this function.
@param[in] PagingMode The paging mode.
@param[in] Buffer The free buffer to be used for page table creation/updating.
@param[in, out] BufferSize The buffer size.

1
UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c
View File

@ -640,6 +640,7 @@ PageTableLibMapInLevel (
Create or update page table to map [LinearAddress, LinearAddress + Length) with specified attribute.
@param[in, out] PageTable The pointer to the page table to update, or pointer to NULL if a new page table is to be created.
If not pointer to NULL, the value it points to won't be changed in this function.
@param[in] PagingMode The paging mode.
@param[in] Buffer The free buffer to be used for page table creation/updating.
@param[in, out] BufferSize The buffer size.