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| author |  Vincenzo Frascino <vincenzo.frascino@arm.com>
| 2021-10-06 16:47:50 +0100 |
|---|---|---|
| committer |  Will Deacon <will@kernel.org>
| 2021-10-07 09:30:24 +0100 |
| commit | ec0288369f0cc6d85837a18f1c4c65451c94477b (patch) | |
| tree | 7f102511697c947cd6e96c1438f7e50ad05e6d13 /Documentation/dev-tools | |
| parent | arm64: mte: CPU feature detection for Asymm MTE (diff) | |
| download | linux-ec0288369f0cc6d85837a18f1c4c65451c94477b.tar.gz linux-ec0288369f0cc6d85837a18f1c4c65451c94477b.tar.bz2 linux-ec0288369f0cc6d85837a18f1c4c65451c94477b.zip | |
arm64: mte: Add asymmetric mode support
MTE provides an asymmetric mode for detecting tag exceptions. 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.
Add support for MTE asymmetric mode.
Note: If the CPU does not support MTE asymmetric mode the kernel falls
back on synchronous mode which is the default for kasan=on.
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Andrey Konovalov <andreyknvl@gmail.com>
Link: https://lore.kernel.org/r/20211006154751.4463-5-vincenzo.frascino@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'Documentation/dev-tools')
0 files changed, 0 insertions, 0 deletions