Commit eb25de27 authored Jul 03, 2020 by Arnaldo Carvalho de Melo

tools arch: Update arch/x86/lib/memcpy_64.S copy used in 'perf bench mem memcpy'



To bring in the change made in this cset:

  e3a9e681 ("x86/entry: Fixup bad_iret vs noinstr")

This doesn't cause any functional changes to tooling, just a rebuild.

Addresses this perf build warning:

  Warning: Kernel ABI header at 'tools/arch/x86/lib/memcpy_64.S' differs from latest version at 'arch/x86/lib/memcpy_64.S'
  diff -u tools/arch/x86/lib/memcpy_64.S arch/x86/lib/memcpy_64.S

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 9434628f

tools/arch/x86/lib/memcpy_64.S

+4 −0

Original line number	Diff line number	Diff line
		@@ -8,6 +8,8 @@
		#include <asm/alternative-asm.h>
		#include <asm/export.h>

		.pushsection .noinstr.text, "ax"

		/*
		* We build a jump to memcpy_orig by default which gets NOPped out on
		* the majority of x86 CPUs which set REP_GOOD. In addition, CPUs which
		@@ -184,6 +186,8 @@ SYM_FUNC_START(memcpy_orig)
		retq
		SYM_FUNC_END(memcpy_orig)

		.popsection

		#ifndef CONFIG_UML

		MCSAFE_TEST_CTL

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