On Mon, Feb 07, 2022 at 03:20:52PM +0000, Mark Brown wrote:
The ZA array can be read and written with the NT_ARM_ZA. Similarly to our interface for the SVE vector registers the regset consists of a header with information on the current vector length followed by an optional register data payload, represented as for signals as a series of horizontal vectors from 0 to VL/8 in the endianness independent format used for vectors.
On get if ZA is enabled then register data will be provided, otherwise it will be omitted. On set if register data is provided then ZA is enabled and initialized using the provided data, otherwise it is disabled.
Signed-off-by: Mark Brown broonie@kernel.org
The patch looks fine to be but I'd like Luis to look at the ptrace ABI in this series.
Reviewed-by: Catalin Marinas catalin.marinas@arm.com