audk/MdeModulePkg/Core
Jian J Wang 2af2988f3a MdeModulePkg/DxeIpl: disable paging before creating new page table
PEI Stack Guard needs to enable paging before DxeIpl. This might cause
#GP in the transition from 32-bit PEI to 64-bit DXE due to the code
trying to write CR3 register with PML4 page table while the processor
is enabled with PAE paging.

Simply disabling paging before updating CR3 can solve this conflict.
There's no such issue for 64-bit PEI so this change applies only to
32-bit code.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: "Ware, Ryan R" <ryan.r.ware@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
2018-09-10 09:28:26 +08:00
..
Dxe MdeModulePkg: Removing ipf which is no longer supported from edk2. 2018-09-06 15:25:16 +08:00
DxeIplPeim MdeModulePkg/DxeIpl: disable paging before creating new page table 2018-09-10 09:28:26 +08:00
Pei MdeModulePkg PeiCore: Always use PeiImageRead() function to load PEI image 2018-09-07 21:39:26 +08:00
PiSmmCore MdeModulePkg/PiSmmCore: Check valid memory range. 2018-08-28 10:24:25 +08:00
RuntimeDxe MdeModulePkg: Removing ipf which is no longer supported from edk2. 2018-09-06 15:25:16 +08:00