On Fri, Sep 18, 2020 at 3:00 PM Marco Elver <elver@xxxxxxxxxx> wrote: > > On Tue, Sep 15, 2020 at 11:16PM +0200, 'Andrey Konovalov' via kasan-dev wrote: > > This patch add a set of arch_*() memory tagging helpers currently only > > defined for arm64 when hardware tag-based KASAN is enabled. These helpers > > will be used by KASAN runtime to implement the hardware tag-based mode. > > > > The arch-level indirection level is introduced to simplify adding hardware > > tag-based KASAN support for other architectures in the future by defining > > the appropriate arch_*() macros. > > > > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > > Co-developed-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > > Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> > > --- > > Change-Id: I42b0795a28067872f8308e00c6f0195bca435c2a > > --- > > arch/arm64/include/asm/memory.h | 8 ++++++++ > > mm/kasan/kasan.h | 19 +++++++++++++++++++ > > 2 files changed, 27 insertions(+) > > > > diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h > > index e424fc3a68cb..268a3b6cebd2 100644 > > --- a/arch/arm64/include/asm/memory.h > > +++ b/arch/arm64/include/asm/memory.h > > @@ -231,6 +231,14 @@ static inline const void *__tag_set(const void *addr, u8 tag) > > return (const void *)(__addr | __tag_shifted(tag)); > > } > > > > +#ifdef CONFIG_KASAN_HW_TAGS > > +#define arch_init_tags(max_tag) mte_init_tags(max_tag) > > +#define arch_get_random_tag() mte_get_random_tag() > > +#define arch_get_mem_tag(addr) mte_get_mem_tag(addr) > > +#define arch_set_mem_tag_range(addr, size, tag) \ > > + mte_set_mem_tag_range((addr), (size), (tag)) > > Suggested edit below, assuming you're fine with checkpatch.pl's new > 100col limit: > > -#define set_mem_tag_range(addr, size, tag) \ > - arch_set_mem_tag_range((addr), (size), (tag)) > +#define set_mem_tag_range(addr, size, tag) arch_set_mem_tag_range((addr), (size), (tag)) Will do in v3, thanks!
