perf bench mem: Prepare the x86-64 build for upstream memcpy_mcsafe() changes
The following upcoming upstream commit: 92b0729c ("x86/mm, x86/mce: Add memcpy_mcsafe()") Adds _ASM_EXTABLE_FAULT(), which is not available in user-space and breaks the build. We don't really need _ASM_EXTABLE_FAULT() in user-space, so simply wrap it to nothing. Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: NIngo Molnar <mingo@kernel.org>
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