On Thu, 03 Aug 2023 00:46:39 +0100, Mark Brown wrote:
> When setting SME vector lengths we clear TIF_SME to reenable SME traps,
> doing a reallocation of the backing storage on next use. We do this using
> clear_thread_flag() which operates on the current thread, meaning that when
> setting the vector length via ptrace we may both not force traps for the
> target task and force a spurious flush of any SME state that the tracing
> task may have.
>
> [...]
Applied to arm64 (for-next/fixes), thanks!
[1/1] arm64/fpsimd: Clear SME state in the target task when setting the VL
https://git.kernel.org/arm64/c/c9bb40b7f786
--
Catalin
