--- a/src/share/vm/runtime/arguments.cpp	Wed Dec 11 12:28:09 2013 +0100
+++ b/src/share/vm/runtime/arguments.cpp	Thu Dec 12 11:05:39 2013 -0800
@@ -2281,18 +2281,6 @@
   status = status && verify_percentage(MarkSweepDeadRatio, "MarkSweepDeadRatio");
 
   status = status && verify_min_value(MarkSweepAlwaysCompactCount, 1, "MarkSweepAlwaysCompactCount");
-#ifdef SPARC
-  if (UseConcMarkSweepGC || UseG1GC) {
-    // Issue a stern warning if the user has explicitly set
-    // UseMemSetInBOT (it is known to cause issues), but allow
-    // use for experimentation and debugging.
-    if (VM_Version::is_sun4v() && UseMemSetInBOT) {
-      assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error");
-      warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability"
-          " on sun4v; please understand that you are using at your own risk!");
-    }
-  }
-#endif // SPARC
 
   if (PrintNMTStatistics) {
 #if INCLUDE_NMT