[PATCH 4.19 80/80] Makefile: disallow data races on gcc-10 as well

From: Greg Kroah-Hartman
Date: Mon May 18 2020 - 14:20:01 EST


From: Sergei Trofimovich <slyfox@xxxxxxxxxx>

commit b1112139a103b4b1101d0d2d72931f2d33d8c978 upstream.

gcc-10 will rename --param=allow-store-data-races=0
to -fno-allow-store-data-races.

The flag change happened at https://gcc.gnu.org/PR92046.

Signed-off-by: Sergei Trofimovich <slyfox@xxxxxxxxxx>
Acked-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Cc: Thomas Backlund <tmb@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
Makefile | 1 +
1 file changed, 1 insertion(+)

--- a/Makefile
+++ b/Makefile
@@ -664,6 +664,7 @@ endif

# Tell gcc to never replace conditional load with a non-conditional one
KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0)
+KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races)

include scripts/Makefile.kcov
include scripts/Makefile.gcc-plugins