linux

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Vincenzo Frascino 2d27e58514 kasan: Extend KASAN mode kernel parameter

Architectures supported by KASAN_HW_TAGS can provide an asymmetric mode
of execution. On an MTE enabled arm64 hw for example this can be
identified with the asymmetric tagging mode of execution. In particular,
when such a mode is present, the CPU triggers a fault on a tag mismatch
during a load operation and asynchronously updates a register when a tag
mismatch is detected during a store operation.

Extend the KASAN HW execution mode kernel command line parameter to
support asymmetric mode.

Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Link: https://lore.kernel.org/r/20211006154751.4463-6-vincenzo.frascino@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

2021-10-07 09:30:24 +01:00

common.c

Merge branch 'akpm' (patches from Andrew)

2021-06-29 17:29:11 -07:00

generic.c

kasan: allow architectures to provide an outline readiness check

2021-06-29 10:53:53 -07:00

hw_tags.c

kasan: Extend KASAN mode kernel parameter

2021-10-07 09:30:24 +01:00

init.c

kasan: use MAX_PTRS_PER_* for early shadow tables