Re: [RFC PATCH v3 00/37] Upstream kvx Linux port

Arnd Bergmann
2024-07-24T07:59:56Z

On Mon, Jul 22, 2024, at 11:41, ysionneau@kalrayinc.com wrote:
> From: Yann Sionneau <ysionneau@kalrayinc.com>
>
> This patch series adds support for the kv3-1 CPU architecture of the kvx family
> found in the Coolidge (aka MPPA3-80) SoC of Kalray.

Thanks for posting it again. I tried to read through it
and point out a few things I noticed. It's been a while
since v2, so I may have forgotten things we already discussed.

I did not see any major issues here, the main things that
take work to implement (better atomics, vmemmap, also vmap_stack
which I did not mention) are just there to make your code
better, but are not required to get it merged.

> This is an RFC, since kvx support is not yet upstreamed into gcc,
> therefore this patch series cannot be merged into Linux for now.

Do you have a timeline for upstream compiler support? I see that
your github trees contain both llvm and gcc forks on an older
baseline (gcc-12.2 and llvm-15, respectively), but I don't know
how much you have already submitting for inclusion in a newer
release.

Arnd