diff options
| author | Andrey Konovalov <andreyknvl@google.com> | 2023-03-11 00:43:32 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-05 19:42:43 -0700 |
| commit | 0d3c9468bef98f703c369ced4ec61b0d4a5210ee (patch) | |
| tree | 8318f85e88ebd3b1eb5e0fa8dd92b1cb657ef051 /mm/kasan | |
| parent | 2cc029a08493b08581a2f12a584b9e0ef6d7891e (diff) | |
kasan, arm64: add arch_suppress_tag_checks_start/stop
Add two new tagging-related routines arch_suppress_tag_checks_start/stop
that suppress MTE tag checking via the TCO register.
These rouines are used in the next patch.
[andreyknvl@google.com: drop __ from mte_disable/enable_tco names]
Link: https://lkml.kernel.org/r/7ad5e5a9db79e3aba08d8f43aca24350b04080f6.1680114854.git.andreyknvl@google.com
Link: https://lkml.kernel.org/r/75a362551c3c54b70ae59a3492cabb51c105fa6b.1678491668.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Weizhao Ouyang <ouyangweizhao@zeku.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/kasan')
| -rw-r--r-- | mm/kasan/kasan.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index a1613f5d7608..f5e4f5f2ba20 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -398,6 +398,8 @@ static inline const void *arch_kasan_set_tag(const void *addr, u8 tag) #define hw_enable_tag_checks_sync() arch_enable_tag_checks_sync() #define hw_enable_tag_checks_async() arch_enable_tag_checks_async() #define hw_enable_tag_checks_asymm() arch_enable_tag_checks_asymm() +#define hw_suppress_tag_checks_start() arch_suppress_tag_checks_start() +#define hw_suppress_tag_checks_stop() arch_suppress_tag_checks_stop() #define hw_force_async_tag_fault() arch_force_async_tag_fault() #define hw_get_random_tag() arch_get_random_tag() #define hw_get_mem_tag(addr) arch_get_mem_tag(addr) |