Hao Wu bce776a5b6 MdeModulePkg/DxeMain: Fix BSP interrupts reenabled in ExitBootServices
Within function CoreExitBootServices(), this commit will move the call
of:

MemoryProtectionExitBootServicesCallback();

before:

SaveAndSetDebugTimerInterrupt (FALSE);
and
gCpu->DisableInterrupt (gCpu);

The reason is that, within MemoryProtectionExitBootServicesCallback(),
APIs like RaiseTpl and RestoreTpl maybe called. An example will be:

DebugLib (using PeiDxeDebugLibReportStatusCode instance)
 |
 v
ReportStatusCodeLib (using DxeReportStatusCodeLib instance)
 |
 v
Raise/RestoreTpl

The call of Raise/RestoreTpl APIs will re-enable BSP interrupts. Hence,
this commit refine the calling sequence to ensure BSP interrupts before
leaving CoreExitBootServices().

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
2018-03-20 15:54:15 +08:00

EDK II Project

A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org.

Contributions to the EDK II open source project are covered by the TianoCore Contribution Agreement 1.1

The majority of the content in the EDK II open source project uses a BSD 2-Clause License. The EDK II open source project contains the following components that are covered by additional licenses:

The EDK II Project is composed of packages. The maintainers for each package are listed in Maintainers.txt.

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