[XENBUS PATCH 2/2] Remove barriers in Acquire/ReleaseHighLock

[Tu Dinh <ngoc-tu.dinh@xxxxxxxxxx>]

InterlockedCompareExchange/InterlockedExchange are already full
barriers.

Signed-off-by: Tu Dinh <ngoc-tu.dinh@xxxxxxxxxx>
---
 src/common/high.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/src/common/high.h b/src/common/high.h
index 4e21f5b..bdebc7f 100644
--- a/src/common/high.h
+++ b/src/common/high.h
@@ -57,8 +57,6 @@ __AcquireHighLock(
     while (InterlockedCompareExchange(Lock, LOCK_MAGIC, 0) != 0)
         _mm_pause();
 
-    KeMemoryBarrier();
-
     return Irql;
 }
 
@@ -75,8 +73,6 @@ ReleaseHighLock(
     _In_  _IRQL_restores_ KIRQL     Irql
     )
 {
-    KeMemoryBarrier();
-
     InterlockedExchange(Lock, 0);
     KeLowerIrql(Irql);
 }
-- 
2.54.0.windows.1



--
Ngoc Tu Dinh | Vates XCP-ng Developer

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