--- a/hotspot/src/os_cpu/solaris_x86/vm/orderAccess_solaris_x86.inline.hpp Tue Mar 24 15:09:52 2009 -0700
+++ b/hotspot/src/os_cpu/solaris_x86/vm/orderAccess_solaris_x86.inline.hpp Thu Mar 26 14:31:45 2009 -0700
@@ -61,11 +61,8 @@
#endif // AMD64
}
inline void _OrderAccess_fence() {
-#ifdef AMD64
- __asm__ __volatile__ ("mfence":::"memory");
-#else
+ // Always use locked addl since mfence is sometimes expensive
__asm__ volatile ("lock; addl $0,0(%%esp)" : : : "cc", "memory");
-#endif // AMD64
}
}