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 49f05fb..60f5c7f 100644
--- a/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c
+++ b/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c
@@ -55,6 +55,10 @@
}
}
+ if (CacheLineSize < 32) {
+ CacheLineSize = 32;
+ }
+
return CacheLineSize;
}
