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

Yann Sionneau
2024-07-25T10:07:50Z

Hello Arnd,

Le 7/24/24 à 09:59, Arnd Bergmann a écrit :
> 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.
Thanks a lot for your reviews, as always it's much appreciated.
>> 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.
We are still willing to contribute our kvx support into upstream gcc,
but we cannot commit to a deadline yet because

of some code cleanup that is needed and we don't have a date for it yet.

We also do have public gcc 13.2.0 support
(https://github.com/kalray/gcc/blob/coolidge/ChangeLog) and llvm 15.0.7

We regularly (every 3 months) push on our github repos updated toolchains.

As said in the cover letter binutils kvx support is now upstream.

Regards,

--

Yann