Author: nwhitehorn
Date: Thu May 24 22:14:39 2012
New Revision: 235943
URL: http://svn.freebsd.org/changeset/base/235943
Log:
Atomic operation acquire barriers also need to be isync on 64-bit systems.
Modified:
head/sys/powerpc/include/atomic.h
Modified: head/sys/powerpc/include/atomic.h
==============================================================================
--- head/sys/powerpc/include/atomic.h Thu May 24 22:06:00 2012
(r235942)
+++ head/sys/powerpc/include/atomic.h Thu May 24 22:14:39 2012
(r235943)
@@ -52,7 +52,7 @@
#define rmb() __asm __volatile("lwsync" : : : "memory")
#define wmb() __asm __volatile("lwsync" : : : "memory")
#define __ATOMIC_REL() __asm __volatile("lwsync" : : : "memory")
-#define __ATOMIC_ACQ() __asm __volatile("lwsync" : : : "memory")
+#define __ATOMIC_ACQ() __asm __volatile("isync" : : : "memory")
#else
#define mb() __asm __volatile("sync" : : : "memory")
#define rmb() __asm __volatile("sync" : : : "memory")
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