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UefiCpuPkg/MpInitLib: Enable 5-level paging for AP when BSP's enabled

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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>
This commit is contained in:
Ni, Ray
2019-08-01 17:58:24 +08:00
committed by Eric Dong
parent 1ab7d72651
commit 09f69a877b
4 changed files with 32 additions and 2 deletions
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4
UefiCpuPkg/Library/MpInitLib/MpLib.h
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@@ -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()