MdePkg/BaseSynchronizationLib: spin lock alignment is 32 at least

Some processor may return small cache line size, we should return 32 bytes at
least for spin lock alignment.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

diff --git a/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c b/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c
index 49f05fb18a1ef47ea17ecb912fb920c8ca2a46cb..60f5c7f36bc22628b8ce834a377a4d69949544cb 100644 (file)
--- a/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c
+++ b/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c
@@ -55,6 +55,10 @@ InternalGetSpinLockProperties (
     }\r
   }\r
 \r
+  if (CacheLineSize < 32) {\r
+    CacheLineSize = 32;\r
+  }\r
+\r
   return CacheLineSize;\r
 }\r
 \r