Messages in this thread | | | Subject | Re: [PATCH v11 09/13] powerpc: disable KASAN instrumentation on early/critical files. | From | Christophe Leroy <> | Date | Fri, 3 May 2019 09:38:06 +0200 |
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Le 26/04/2019 à 18:23, Christophe Leroy a écrit : > All files containing functions run before kasan_early_init() is called > must have KASAN instrumentation disabled. > > For those file, branch profiling also have to be disabled otherwise > each if () generates a call to ftrace_likely_update(). > > Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> > --- > arch/powerpc/kernel/Makefile | 12 ++++++++++++ > arch/powerpc/lib/Makefile | 8 ++++++++ > arch/powerpc/mm/Makefile | 6 ++++++ > arch/powerpc/platforms/powermac/Makefile | 6 ++++++ > arch/powerpc/purgatory/Makefile | 3 +++ > arch/powerpc/xmon/Makefile | 1 + > 6 files changed, 36 insertions(+) >
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> diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile > index 3c1bd9fa23cd..dd945ca869b2 100644 > --- a/arch/powerpc/mm/Makefile > +++ b/arch/powerpc/mm/Makefile > @@ -7,6 +7,12 @@ ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC) > > CFLAGS_REMOVE_slb.o = $(CC_FLAGS_FTRACE) > > +KASAN_SANITIZE_ppc_mmu_32.o := n > + > +ifdef CONFIG_KASAN > +CFLAGS_ppc_mmu_32.o += -DDISABLE_BRANCH_PROFILING > +endif > +
The above is missing in powerpc/next (should now be in arch/powerpc/mm/book3s32/Makefile )
Christophe
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