--- a/hotspot/src/cpu/x86/vm/vm_version_x86.cpp	Tue Jan 22 15:34:16 2013 -0800
+++ b/hotspot/src/cpu/x86/vm/vm_version_x86.cpp	Wed Jan 23 15:11:03 2013 -0800
@@ -661,6 +661,14 @@
       }
     }
   }
+#if defined(COMPILER2) && defined(_ALLBSD_SOURCE)
+    if (MaxVectorSize > 16) {
+      // Limit vectors size to 16 bytes on BSD until it fixes
+      // restoring upper 128bit of YMM registers on return
+      // from signal handler.
+      FLAG_SET_DEFAULT(MaxVectorSize, 16);
+    }
+#endif // COMPILER2
 
   // Use population count instruction if available.
   if (supports_popcnt()) {