diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2020-12-22 12:00:24 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-22 12:55:06 -0800 |
| commit | 1f600626b3a9b77001b3ef90a79bf68c9f7e4cda (patch) | |
| tree | ed3e56b8b1dab6dffe3bdf4258fcbb2b6f140595 /mm/kasan/kasan.h | |
| parent | cebd0eb29acdfc2f5e44e5f356ffcd0c44f16b4a (diff) | |
kasan: rename KASAN_SHADOW_* to KASAN_GRANULE_*
This is a preparatory commit for the upcoming addition of a new hardware
tag-based (MTE-based) KASAN mode.
The new mode won't be using shadow memory, but will still use the concept
of memory granules. Each memory granule maps to a single metadata entry:
8 bytes per one shadow byte for generic mode, 16 bytes per one shadow byte
for software tag-based mode, and 16 bytes per one allocation tag for
hardware tag-based mode.
Rename KASAN_SHADOW_SCALE_SIZE to KASAN_GRANULE_SIZE, and
KASAN_SHADOW_MASK to KASAN_GRANULE_MASK.
Also use MASK when used as a mask, otherwise use SIZE.
No functional changes.
Link: https://lkml.kernel.org/r/939b5754e47f528a6e6a6f28ffc5815d8d128033.1606161801.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Branislav Rankov <Branislav.Rankov@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kasan/kasan.h')
| -rw-r--r-- | mm/kasan/kasan.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 42ab02c61331..53b095f56f28 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -5,8 +5,8 @@ #include <linux/kasan.h> #include <linux/stackdepot.h> -#define KASAN_SHADOW_SCALE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) -#define KASAN_SHADOW_MASK (KASAN_SHADOW_SCALE_SIZE - 1) +#define KASAN_GRANULE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) +#define KASAN_GRANULE_MASK (KASAN_GRANULE_SIZE - 1) #define KASAN_TAG_KERNEL 0xFF /* native kernel pointers tag */ #define KASAN_TAG_INVALID 0xFE /* inaccessible memory tag */ |