sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

UefiPayloadPkg/PayloadEntry: Inherit 4/5-level paging from bootloader

Browse Source 
The patch removes the dep on PcdUse5LevelPageTable.
Now the payload inherits the 5-level paging setting from
bootloader in IA-32e mode and uses 4-level paging in
legacy protected mode.

This fix the potential issue when bootloader enables 5-level paging
but 64bit payload sets 4-level page table to CR3 resulting CPU
exception because PcdUse5LevelPageTable is FALSE.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Reviewed-by: Maurice Ma <maurice.ma@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
This commit is contained in:
Ni, Ray
2021-08-06 16:16:26 +08:00
committed by mergify[bot]
parent 1832eb15aa
commit ca78281c25
3 changed files with 39 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
UefiPayloadPkg/UefiPayloadEntry/UniversalPayloadEntry.inf
View File

@@ -85,7 +85,6 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdNullPointerDetectionPropertyMask ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdHeapGuardPropertyMask ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdUse5LevelPageTable ## SOMETIMES_CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdGhcbBase ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdGhcbSize ## CONSUMES