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

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Message-ID: <CANiq72=M5TrUL+9Z0nqKKcD=KHwyDA79fNYHgU2EJ+7u6Ct8qw@mail.gmail.com>
Date: Sun, 7 Jan 2024 15:29:20 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: WANG Rui <wangrui@...ngson.cn>
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

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).

> +    } 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!

Cheers,
Miguel