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

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To bring in the change made in this cset:

  e3a9e681ad ("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>
This commit is contained in:
Arnaldo Carvalho de Melo 2020-07-03 08:11:16 -03:00
parent 9434628fce
commit eb25de2765
1 changed files with 4 additions and 0 deletions
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4
tools/arch/x86/lib/memcpy_64.S
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@ -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