diff options
| author | Ni, Ray <ray.ni@intel.com> | 2019-08-01 17:58:24 +0800 |
|---|---|---|
| committer | Eric Dong <eric.dong@intel.com> | 2019-08-09 08:52:08 +0800 |
| commit | 09f69a877b1b499ff4b6bd6450dc531a19d7ed72 (patch) | |
| tree | 402b3452df4065df3b765412c9fdabd07a6079a8 /UefiCpuPkg/Library/MpInitLib/MpLib.h | |
| parent | 1ab7d72651bb254fa9bcb20fd3da2685fc142ea1 (diff) | |
| download | edk2-09f69a877b1b499ff4b6bd6450dc531a19d7ed72.tar.gz edk2-09f69a877b1b499ff4b6bd6450dc531a19d7ed72.tar.bz2 edk2-09f69a877b1b499ff4b6bd6450dc531a19d7ed72.zip | |
UefiCpuPkg/MpInitLib: Enable 5-level paging for AP when BSP's enabled
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2008
MpInitLib is the library that's responsible to wake up APs to provide
MP PPI and Protocol services.
The patch synchronizes BSP's CR4.LA57 to each AP's CR4.LA57.
Without this change, AP may enter to GP fault when BSP's 5-level page
table is set to AP during AP wakes up.
Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Eric Dong <eric.dong@intel.com>
Diffstat (limited to 'UefiCpuPkg/Library/MpInitLib/MpLib.h')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/MpLib.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.h b/UefiCpuPkg/Library/MpInitLib/MpLib.h index effa235778..4b12f91d47 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.h +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.h @@ -185,6 +185,10 @@ typedef struct { UINT16 ModeTransitionSegment;
UINT32 ModeHighMemory;
UINT16 ModeHighSegment;
+ //
+ // Enable5LevelPaging indicates whether 5-level paging is enabled in long mode.
+ //
+ BOOLEAN Enable5LevelPaging;
} MP_CPU_EXCHANGE_INFO;
#pragma pack()
|