Messages in this thread | | | Date | Fri, 22 May 2020 12:26:31 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH -tip v3 03/11] kcsan: Support distinguishing volatile accesses |
| |
On Thu, May 21, 2020 at 04:20:39PM +0200, Marco Elver wrote: > diff --git a/scripts/Makefile.kcsan b/scripts/Makefile.kcsan > index 20337a7ecf54..75d2942b9437 100644 > --- a/scripts/Makefile.kcsan > +++ b/scripts/Makefile.kcsan > @@ -9,7 +9,10 @@ else > cc-param = --param -$(1) > endif > > +# Keep most options here optional, to allow enabling more compilers if absence > +# of some options does not break KCSAN nor causes false positive reports. > CFLAGS_KCSAN := -fsanitize=thread \ > - $(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) > + $(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) \ > + $(call cc-param,tsan-distinguish-volatile=1)
gcc 9 doesn't like this:
cc1: error: invalid --param name ‘-tsan-distinguish-volatile’ make[1]: *** [scripts/Makefile.build:100: scripts/mod/devicetable-offsets.s] Error 1 make[1]: *** Waiting for unfinished jobs.... cc1: error: invalid --param name ‘-tsan-distinguish-volatile’ make[1]: *** [scripts/Makefile.build:267: scripts/mod/empty.o] Error 1 make: *** [Makefile:1141: prepare0] Error 2 make: *** Waiting for unfinished jobs....
git grep "tsan-distinguish-volatile" in gcc's git doesn't give anything.
Hmm.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
| |