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MdePkg/UefiRuntimeLib: Do not allow to be linked by DXE driver 

When UefiRuntimeLib links to a DXE driver, its constructor
still registers a Virtual Address Change event. The event callback
will get called when RT.SetVirtualAddressMap() is called from OS.
But when the driver is a DXE driver, the memory occupied by the
callback function might be zeroed or used by OS since the BS type
memory is free memory when entering to RT phase.

The patch reverts commit 97511979b4
"MdePkg/UefiRuntimeLib: Support more module types."
It makes sure that DXE driver cannot link to this library.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This commit is contained in:
Ruiyu Ni 2018-06-01 15:18:02 +08:00
parent 0b6457efab
commit f6406f94dc
1 changed files with 2 additions and 2 deletions
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4
MdePkg/Library/UefiRuntimeLib/UefiRuntimeLib.inf
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@ -5,7 +5,7 @@
# EVT_SIGNAL_EXIT_BOOT_SERVICES event, to provide runtime services.
# This instance also supports SAL drivers for better performance.
#
# Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
@ -24,7 +24,7 @@
FILE_GUID = b1ee6c28-54aa-4d17-b705-3e28ccb27b2e
MODULE_TYPE = DXE_RUNTIME_DRIVER
VERSION_STRING = 1.0
LIBRARY_CLASS = UefiRuntimeLib|DXE_RUNTIME_DRIVER DXE_SAL_DRIVER DXE_CORE DXE_DRIVER DXE_SMM_DRIVER
LIBRARY_CLASS = UefiRuntimeLib|DXE_RUNTIME_DRIVER DXE_SAL_DRIVER
CONSTRUCTOR = RuntimeDriverLibConstruct
DESTRUCTOR = RuntimeDriverLibDeconstruct