From 6927ee91a4ffee37d757777351b5eca81440b2ee Mon Sep 17 00:00:00 2001
From: "Jan Alexander Steffens (heftig)" <jan.steffens@gmail.com>
Date: Thu, 11 Sep 2014 23:06:46 +0200
Subject: [PATCH] Also enable the TSX workaround for i386 (Linux)

* include/private/gcconfig.h (GLIBC_2_19_TSX_BUG): Define for
LINUX/I386 (if __GLIBC__).
---
 include/private/gcconfig.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
index 72bef854..aa80d532 100644
--- a/include/private/gcconfig.h
+++ b/include/private/gcconfig.h
@@ -1375,6 +1375,11 @@
 #         define PREFETCH_FOR_WRITE(x) \
             __asm__ __volatile__ ("prefetchw %0" : : "m"(*(char *)(x)))
 #       endif
+#       if defined(__GLIBC__)
+          /* Workaround lock elision implementation for some glibc.     */
+#         define GLIBC_2_19_TSX_BUG
+#         include <gnu/libc-version.h> /* for gnu_get_libc_version() */
+#       endif
 #   endif
 #   ifdef CYGWIN32
 #       define OS_TYPE "CYGWIN32"
-- 
2.40.0