Re: cleanup the RAID6 P/Q library v3

"H. Peter Anvin" <[email protected]>
Newsgroups org.kernel.vger.linux-raid,dev.linux.lists.loongarch,org.infradead.lists.linux-arm-kernel,org.infradead.lists.linux-riscv,org.kernel.vger.linux-arch,org.kernel.vger.linux-btrfs,org.kernel.vger.linux-crypto,org.kernel.vger.linux-kernel,org.kernel.vger.linux-s390,org.ozlabs.lists.linuxppc-dev
Message-ID <[email protected]> 
On 2026-05-19 01:24, Christoph Hellwig wrote:
> 
> raid6: rework registration of optimized algorithms
> 
>  - avx2 instead of avx512 is probably the right thing for no
>    benchmarking, but if it was intentional (it wasn't), that should
>    be document.  So I'll just switch back to the previous version to
>    keep the state of the art

It is unlikely to be the right thing *going forward*, though.

The very unfortunate performance inversion is likely model-specific. It is one
of those things where you largely would have to have a list of quirks :(

	-hpa
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