Re: [PATCH 6.12] raid6: add missing vzeroupper to AVX-512 code

[sashiko-bot@kernel.org]

Thank you for your contribution! Sashiko AI review found 1 potential
issue to consider:
- [Low] raid6: missing Fixes trailer for AVX-512 xor_syndrome commit
  694dda62d286
--

commit 369a70502fe6ce19affa3189f8d493476e955e10
Author: Eric Biggers <ebiggers@kernel.org>

> raid6: add missing vzeroupper to AVX-512 code
>
> commit b82cf9e49c1be7cf1fd8e1bd806b0cdd25ab8127 upstream.
>
> Since the AVX-512 optimized RAID6 code uses ZMM registers, execute
> vzeroupper before returning from it.  This is needed to avoid degrading
> the performance of any later SSE code that may happen to be executed.
>
> Link: https://lore.kernel.org/20260831212316.213896-1-ebiggers@kernel.org
> Fixes: e0a491c12968 ("lib/raid6: Add AVX512 optimized gen_syndrome functions")
> Fixes: 13c520b2993c ("lib/raid6: Add AVX512 optimized recovery functions")
> Signed-off-by: Eric Biggers <ebiggers@kernel.org>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> Cc: Christoph Hellwig <hch@lst.de>
> Cc: <stable@vger.kernel.org>

[Severity: Low]
In addition to the gen_syndrome and recovery functions, this patch adds
vzeroupper to raid6_avx5121_xor_syndrome(), raid6_avx5122_xor_syndrome(),
and raid6_avx5124_xor_syndrome().  Should this also include:

  Fixes: 694dda62d286 ("lib/raid6: Add AVX512 optimized xor_syndrome functions")

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261107200913.103158-1-ebiggers@kernel.org?part=1