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authorJeff Fan <jeff.fan@intel.com>2016-07-12 11:10:27 +0800
committerJeff Fan <jeff.fan@intel.com>2016-07-14 09:52:39 +0800
commit52f5bd2669916c54845eda8829b2f129b6088896 (patch)
tree24a6ab5459e0feb1784264c63033fbd04c8aea00 /MdePkg/Library/BaseSynchronizationLib
parent01beffa7e9bb47adfeeb9868058311a478698b72 (diff)
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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>
Diffstat (limited to 'MdePkg/Library/BaseSynchronizationLib')
-rw-r--r--MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c b/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c
index 49f05fb18a..60f5c7f36b 100644
--- a/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c
+++ b/MdePkg/Library/BaseSynchronizationLib/Ia32/InternalGetSpinLockProperties.c
@@ -55,6 +55,10 @@ InternalGetSpinLockProperties (
}
}
+ if (CacheLineSize < 32) {
+ CacheLineSize = 32;
+ }
+
return CacheLineSize;
}