Revision: 14806
http://sourceforge.net/p/edk2/code/14806
Author: jljusten
Date: 2013-10-29 06:02:46 +0000 (Tue, 29 Oct 2013)
Log Message:
-----------
OvmfPkg/PlatformPei: emulated NV storage must be EfiRuntimeServicesData
SVN r14770 ("OvmfPkg/PlatformPei: correctly align emulated NV storage")
made sure the emulated NV storage was allocated with correct alignment.
However, the AllocateRuntimePool() -> AllocateAlignedPages() change
flipped the memory type from EfiRuntimeServicesData to
EfiBootServicesData. This causes variable services to access freed storage
at runtime. It crashes Windows 2008 R2 early at boot, for example.
Keep the alignment, but restore the memory type to EfiRuntimeServicesData,
by calling AllocateAlignedRuntimePages().
These helper functions are implemeted and documented in
"MdePkg/Library/PeiMemoryAllocationLib/MemoryAllocationLib.c".
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <[email protected]>
Reviewed-by: Jordan Justen <[email protected]>
Revision Links:
--------------
http://sourceforge.net/p/edk2/code/14770
http://sourceforge.net/p/edk2/code/2
Modified Paths:
--------------
trunk/edk2/OvmfPkg/PlatformPei/Platform.c
Modified: trunk/edk2/OvmfPkg/PlatformPei/Platform.c
===================================================================
--- trunk/edk2/OvmfPkg/PlatformPei/Platform.c 2013-10-29 01:31:02 UTC (rev
14805)
+++ trunk/edk2/OvmfPkg/PlatformPei/Platform.c 2013-10-29 06:02:46 UTC (rev
14806)
@@ -287,7 +287,7 @@
//
VariableStore =
(EFI_PHYSICAL_ADDRESS)(UINTN)
- AllocateAlignedPages (
+ AllocateAlignedRuntimePages (
EFI_SIZE_TO_PAGES (2 * PcdGet32 (PcdFlashNvStorageFtwSpareSize)),
PcdGet32 (PcdFlashNvStorageFtwSpareSize)
);
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