| Date | Tue, 15 Sep 2020 23:16:12 +0200 | Subject | [PATCH v2 30/37] kasan: define KASAN_GRANULE_SIZE for HW_TAGS | From | Andrey Konovalov <> |
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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@google.com> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> --- Change-Id: I5d1117e6a991cbca00d2cfb4ba66e8ae2d8f513a --- mm/kasan/kasan.h | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 8b43fc163ed1..ba63d8a62968 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-helpers.h> +#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 */ -- 2.28.0.618.gf4bc123cb7-goog
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