--- old/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	2014-09-04 11:21:59.461340856 +0400
+++ new/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	2014-09-04 11:21:59.365338057 +0400
@@ -930,3 +930,8 @@
   // keep the page mapped so CS limit isn't reduced.
 #endif
 }
+
+int os::extra_bang_size_in_bytes() {
+  // JDK-8050147 requires the full cache line bang for x86.
+  return VM_Version::L1_line_size();
+}