--- a/src/hotspot/os_cpu/linux_ppc/os_linux_ppc.cpp	Thu Nov 08 11:22:28 2018 -0800
+++ b/src/hotspot/os_cpu/linux_ppc/os_linux_ppc.cpp	Thu Nov 08 11:45:13 2018 -0800
@@ -477,20 +477,6 @@
         return true;
       }
     }
-
-    // Check to see if we caught the safepoint code in the
-    // process of write protecting the memory serialization page.
-    // It write enables the page immediately after protecting it
-    // so we can just return to retry the write.
-    if ((sig == SIGSEGV) &&
-        // Si_addr may not be valid due to a bug in the linux-ppc64 kernel (see comment above).
-        // Use is_memory_serialization instead of si_addr.
-        ((NativeInstruction*)pc)->is_memory_serialization(thread, ucVoid)) {
-      // Synchronization problem in the pseudo memory barrier code (bug id 6546278)
-      // Block current thread until the memory serialize page permission restored.
-      os::block_on_serialize_page_trap();
-      return true;
-    }
   }
 
   if (stub != NULL) {