Re: [PATCH 3/3] rust: Enable for MIPS

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To: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
Subject: Re: [PATCH 3/3] rust: Enable for MIPS
From: Miguel Ojeda <miguel.ojeda.sandonis@xxxxxxxxx>
Date: Tue, 3 Sep 2024 19:44:08 +0200
Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx>, Nathan Chancellor <nathan@xxxxxxxxxx>, Nicolas Schier <nicolas@xxxxxxxxx>, Richard Weinberger <richard@xxxxxx>, Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx>, Johannes Berg <johannes@xxxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Miguel Ojeda <ojeda@xxxxxxxxxx>, Alex Gaynor <alex.gaynor@xxxxxxxxx>, Wedson Almeida Filho <wedsonaf@xxxxxxxxx>, Boqun Feng <boqun.feng@xxxxxxxxx>, Gary Guo <gary@xxxxxxxxxxx>, Björn Roy Baron <bjorn3_gh@xxxxxxxxxxxxxx>, Benno Lossin <benno.lossin@xxxxxxxxx>, Andreas Hindborg <a.hindborg@xxxxxxxxxxx>, Alice Ryhl <aliceryhl@xxxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Alex Shi <alexs@xxxxxxxxxx>, Yanteng Si <siyanteng@xxxxxxxxxxx>, Nick Desaulniers <ndesaulniers@xxxxxxxxxx>, Bill Wendling <morbo@xxxxxxxxxx>, Justin Stitt <justinstitt@xxxxxxxxxx>, linux-kbuild@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-um@xxxxxxxxxxxxxxxxxxx, rust-for-linux@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linux-trace-kernel@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, llvm@xxxxxxxxxxxxxxx
In-reply-to: <20240903-mips-rust-v1-3-0fdf0b2fd58f@flygoat.com>
References: <20240903-mips-rust-v1-0-0fdf0b2fd58f@flygoat.com> <20240903-mips-rust-v1-3-0fdf0b2fd58f@flygoat.com>

On Tue, Sep 3, 2024 at 7:15 PM Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> wrote:
>
> We don't use builtin target as there is no sutiable baremetal
> target for us that can cover all ISA variants supported by kernel.

Since we should try to go away from using `target.json`: what was not
possible to enable via e.g. `-Ctarget-features` or other flags? i.e. I
see the `+mips*` features there in the supported list, and from a
quick test the data layout also seems to match, but I assume I missed
something.

If it is not possible, then we should definitely ping upstream Rust about it. :)

Cheers,
Miguel

Follow-Ups:
- Re: [PATCH 3/3] rust: Enable for MIPS
  - From: Jiaxun Yang

References:
- [PATCH 0/3] rust: Initial MIPS support
  - From: Jiaxun Yang
- [PATCH 3/3] rust: Enable for MIPS
  - From: Jiaxun Yang

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