diff options
| author | Vincenzo Frascino <vincenzo.frascino@arm.com> | 2019-08-21 17:47:29 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-08-22 12:32:26 +0100 |
| commit | e1b832503e8f29ea6e20c30db9c3176576c0fc78 (patch) | |
| tree | 73323efe1749217bc201471c52b957ea3777c830 /lib/crc8.c | |
| parent | 413235fcedc7f61e925fe9818bc3f5eff8ad2494 (diff) | |
arm64: Define Documentation/arm64/tagged-address-abi.rst
On AArch64 the TCR_EL1.TBI0 bit is set by default, allowing userspace
(EL0) to perform memory accesses through 64-bit pointers with a non-zero
top byte. Introduce the document describing the relaxation of the
syscall ABI that allows userspace to pass certain tagged pointers to
kernel syscalls.
Cc: Will Deacon <will.deacon@arm.com>
Cc: Szabolcs Nagy <szabolcs.nagy@arm.com>
Acked-by: Kevin Brodsky <kevin.brodsky@arm.com>
Acked-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Co-developed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'lib/crc8.c')
0 files changed, 0 insertions, 0 deletions