[v1] MdeModulePkg/PiSmmCore: Pad POOL_HEADER to be 8-byte aligned

[edk2] [PATCH] MdeModulePkg/PiSmmCore: Pad POOL_HEADER to be 8-byte aligned

Hao Wu posted 1 patch 7 years, 8 months ago

Diff against v2
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MdeModulePkg/Core/PiSmmCore/PiSmmCore.h | 1 +
1 file changed, 1 insertion(+)

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[edk2] [PATCH] MdeModulePkg/PiSmmCore: Pad POOL_HEADER to be 8-byte aligned

Posted by Hao Wu 7 years, 8 months ago

According to the PI spec (Vol 4, Section 3.2 SmmAllocatePool()):
The SmmAllocatePool() function ... All allocations are eight-byte aligned.

The commit adds a padding field in structure 'POOL_HEADER' to ensure the
above requirement is met.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
---
 MdeModulePkg/Core/PiSmmCore/PiSmmCore.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
index c12805a2dd..a8aa017add 100644
--- a/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
+++ b/MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
@@ -1200,6 +1200,7 @@ typedef struct {
   UINTN           Size;
   BOOLEAN         Available;
   EFI_MEMORY_TYPE Type;
+  UINT32          Padding;
 } POOL_HEADER;
 
 typedef struct {
-- 
2.12.0.windows.1

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