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From: WANG Rui <wangrui@loongson.cn>
Date: Mon, 8 Jan 2024 11:21:43 +0800
Message-ID: <CAHirt9hd4W25p1kVNYXbEXrLj6NgT5r=EPWsoOmHZzS1qGR-yA@mail.gmail.com>
Subject: Re: [PATCH] LoongArch: Enable initial Rust support
To: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Miguel Ojeda <ojeda@kernel.org>, Alex Gaynor <alex.gaynor@gmail.com>, 
	Wedson Almeida Filho <wedsonaf@gmail.com>, Huacai Chen <chenhuacai@kernel.org>, 
	Jonathan Corbet <corbet@lwn.net>, Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>, 
	=?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= <bjorn3_gh@protonmail.com>, 
	Benno Lossin <benno.lossin@proton.me>, Andreas Hindborg <a.hindborg@samsung.com>, 
	Alice Ryhl <aliceryhl@google.com>, WANG Xuerui <kernel@xen0n.name>, rust-for-linux@vger.kernel.org, 
	linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, 
	linux-doc@vger.kernel.org, loongson-kernel@lists.loongnix.cn
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Hello,

On Sun, Jan 7, 2024 at 10:29=E2=80=AFPM Miguel Ojeda
<miguel.ojeda.sandonis@gmail.com> wrote:
>
> On Sat, Jan 6, 2024 at 8:04=E2=80=AFAM WANG Rui <wangrui@loongson.cn> wro=
te:
> >
> >  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
> >  Architecture  Level of support  Constraints
> >  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
> > +``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.Cun=
liffe@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
>

--=20
Rui