On Thu, Aug 27, 2020 at 1:05 PM Vincenzo Frascino <vincenzo.frascino@xxxxxxx> wrote: > > > > On 8/27/20 11:41 AM, Catalin Marinas wrote: > > On Fri, Aug 14, 2020 at 07:27:10PM +0200, Andrey Konovalov wrote: > >> Hardware tag-based KASAN has granules of MTE_GRANULE_SIZE. Define > >> KASAN_GRANULE_SIZE to MTE_GRANULE_SIZE for CONFIG_KASAN_HW_TAGS. > >> > >> Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > >> --- > >> mm/kasan/kasan.h | 6 ++++++ > >> 1 file changed, 6 insertions(+) > >> > >> diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h > >> index 1d3c7c6ce771..4d8e229f8e01 100644 > >> --- a/mm/kasan/kasan.h > >> +++ b/mm/kasan/kasan.h > >> @@ -5,7 +5,13 @@ > >> #include <linux/kasan.h> > >> #include <linux/stackdepot.h> > >> > >> +#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) > >> #define KASAN_GRANULE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) > >> +#else > >> +#include <asm/mte.h> > > > > You could only include the new asm/mte-def.h file (currently mte_asm.h). > > > > Agreed, we should only include asm/mte-def.h here since after the suggested > modification will be sufficient for the purpose. Will do in v2. > > >> +#define KASAN_GRANULE_SIZE (MTE_GRANULE_SIZE) > >> +#endif > >> + > >> #define KASAN_GRANULE_MASK (KASAN_GRANULE_SIZE - 1) > >> > >> #define KASAN_TAG_KERNEL 0xFF /* native kernel pointers tag */ > >> -- > >> 2.28.0.220.ged08abb693-goog > >> > > > > -- > Regards, > Vincenzo
