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authorArnaldo Carvalho de Melo <acme@redhat.com>2020-07-03 08:11:16 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2020-07-03 08:11:16 -0300
commiteb25de276505c664c6ee838e60c6e5ad1837f55e (patch)
tree50ce242ceee14e4e013bf6371ebb38921573fc35 /tools
parent9434628fcee63b1f3c6a6881b70e8f69a1f68e88 (diff)
downloadlinux-eb25de276505c664c6ee838e60c6e5ad1837f55e.tar.bz2
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: e3a9e681adb7 ("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>
Diffstat (limited to 'tools')
-rw-r--r--tools/arch/x86/lib/memcpy_64.S4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/arch/x86/lib/memcpy_64.S b/tools/arch/x86/lib/memcpy_64.S
index df767afc690f..45f8e1b02241 100644
--- a/tools/arch/x86/lib/memcpy_64.S
+++ b/tools/arch/x86/lib/memcpy_64.S
@@ -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