Re: [PATCH] arm64/fpsimd: Clear SME state in the target task when setting the VL

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.

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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