Re: [PATCH v9 36/44] kasan: define KASAN_GRANULE_SIZE for HW_TAGS
From: Alexander Potapenko <glider@google.com>
Date: 2020-11-11 16:13:35
Also in:
linux-mm, lkml
On Tue, Nov 10, 2020 at 11:12 PM Andrey Konovalov [off-list ref] 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 <redacted> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
quoted hunk ↗ jump to hunk
--- 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 ae7def3b725b..d745a78745dd 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-kasan.h> +#define KASAN_GRANULE_SIZE MTE_GRANULE_SIZE +#endif + #define KASAN_GRANULE_MASK (KASAN_GRANULE_SIZE - 1) #define KASAN_GRANULE_PAGE (KASAN_GRANULE_SIZE << PAGE_SHIFT) --2.29.2.222.g5d2a92d10f8-goog
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