src/os_cpu/windows_x86/vm/os_windows_x86.cpp

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*** 637,641 ****
--- 637,646 ----
  #ifdef AMD64
    assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment");
  #endif
  }
  #endif
+ 
+ int os::extra_bang_size_in_bytes() {
+   // JDK-8050147 requires the full cache line bang for x86.
+   return VM_Version::L1_line_size();
+ }