linux-kernel - Re: [PATCH] LoongArch: Enable initial Rust support

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Message-ID: <CAHirt9hd4W25p1kVNYXbEXrLj6NgT5r=EPWsoOmHZzS1qGR-yA@mail.gmail.com>
Date: Mon, 8 Jan 2024 11:21:43 +0800
From: WANG Rui <wangrui@...ngson.cn>
To: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Wedson Almeida Filho <wedsonaf@...il.com>, Huacai Chen <chenhuacai@...nel.org>, 
	Jonathan Corbet <corbet@....net>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...sung.com>, 
	Alice Ryhl <aliceryhl@...gle.com>, WANG Xuerui <kernel@...0n.name>, rust-for-linux@...r.kernel.org, 
	linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev, 
	linux-doc@...r.kernel.org, loongson-kernel@...ts.loongnix.cn
Subject: Re: [PATCH] LoongArch: Enable initial Rust support

Hello,

On Sun, Jan 7, 2024 at 10:29 PM Miguel Ojeda
<miguel.ojeda.sandonis@...il.com> wrote:
>
> On Sat, Jan 6, 2024 at 8:04 AM WANG Rui <wangrui@...ngson.cn> wrote:
> >
> >  ============  ================  ==============================================
> >  Architecture  Level of support  Constraints
> >  ============  ================  ==============================================
> > +``loongarch`` Maintained
>
> On top of what Huacai said, it would be nice to add another character
> and realign the table so that `loongarch` it doesn't overflow (perhaps
> best done in an additional, previous patch).

Thanks Huacai, Miguel.

>
> > +    } else if cfg.has("LOONGARCH") {
>
> Would it be possible to do it without a custom target in
> `scripts/generate_rust_target.rs`? If it is not possible (e.g. there
> is something that you cannot tweak otherwise on top of a built-in
> target via the CLI flags), it is fine to use a custom target for the
> moment.
>
> For instance, this is how ARM is doing it:
> https://lore.kernel.org/rust-for-linux/20231020155056.3495121-1-Jamie.Cunliffe@arm.com/
>

Thanks for your comments. I noticed that the refactoring of the build
system to support the use of Rust built-in targets is still ongoing.
Could this take some time? In the meantime, let's proceed with the
generation method.

> Thanks!
>
> Cheers,
> Miguel
>

-- 
Rui