linux-kernel - Re: [PATCH V4 2/3] rust: Add PowerPC support

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Message-ID: <CANiq72nqH=H4a_Yo17KPmku5pPRMVRBADgj8j+=TcR=3r0vOdQ@mail.gmail.com>
Date: Mon, 9 Feb 2026 13:02:20 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: "Mukesh Kumar Chaurasiya (IBM)" <mkchauras@...il.com>
Cc: linkmauve@...kmauve.fr, ojeda@...nel.org, boqun.feng@...il.com, 
	gary@...yguo.net, bjorn3_gh@...tonmail.com, lossin@...nel.org, 
	a.hindborg@...nel.org, aliceryhl@...gle.com, tmgross@...ch.edu, 
	dakr@...nel.org, corbet@....net, maddy@...ux.ibm.com, mpe@...erman.id.au, 
	npiggin@...il.com, chleroy@...nel.org, peterz@...radead.org, 
	jpoimboe@...nel.org, jbaron@...mai.com, rostedt@...dmis.org, ardb@...nel.org, 
	rust-for-linux@...r.kernel.org, linux-doc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH V4 2/3] rust: Add PowerPC support

On Mon, Feb 9, 2026 at 11:55 AM Mukesh Kumar Chaurasiya (IBM)
<mkchauras@...il.com> wrote:
>
> These changes aren’t the only ones required to get the kernel to compile
> and link on PowerPC

Is this patch not complete, then? It is up to the PowerPC maintainers
what they want to merge, of course, but I don't think we should add
the line in `Documentation/` if it does not work yet.

By the way, regarding that:

> +``powerpc``    Experimental      32-bit Big Endian only.

These levels are mapped to `MAINTAINERS` ones:

    Below is a general summary of architectures that currently work. Level of
    support corresponds to ``S`` values in the ``MAINTAINERS`` file.

But there is no "Experimental" level there. The idea is to know if
there is someone being paid to work on this, or not, etc.

This should also be changed in the other patch that adds ppc64le --
e.g. Mukesh, is IBM supporting this?

I guess it may be simpler to not add this line here until it works
properly, and only add the ppc64le one in the next patch, with a fixed
level to one of the `MAINTAINERS` ones.

Thanks!

Cheers,
Miguel