linux-kernel - Re: [PATCH 3/3] rust: Enable for MIPS

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Message-ID: <CANiq72=z1yJm-B_ie=GfueOF1qksaSD9txgFU1YQo2tZx0qQPg@mail.gmail.com>
Date: Tue, 3 Sep 2024 19:44:08 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Jiaxun Yang <jiaxun.yang@...goat.com>
Cc: Masahiro Yamada <masahiroy@...nel.org>, Nathan Chancellor <nathan@...nel.org>, 
	Nicolas Schier <nicolas@...sle.eu>, Richard Weinberger <richard@....at>, 
	Anton Ivanov <anton.ivanov@...bridgegreys.com>, Johannes Berg <johannes@...solutions.net>, 
	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"H. Peter Anvin" <hpa@...or.com>, Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Wedson Almeida Filho <wedsonaf@...il.com>, 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>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
	Steven Rostedt <rostedt@...dmis.org>, Masami Hiramatsu <mhiramat@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, Jonathan Corbet <corbet@....net>, Alex Shi <alexs@...nel.org>, 
	Yanteng Si <siyanteng@...ngson.cn>, Nick Desaulniers <ndesaulniers@...gle.com>, 
	Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-um@...ts.infradead.org, 
	rust-for-linux@...r.kernel.org, linux-mips@...r.kernel.org, 
	linux-trace-kernel@...r.kernel.org, linux-doc@...r.kernel.org, 
	llvm@...ts.linux.dev
Subject: Re: [PATCH 3/3] rust: Enable for MIPS

On Tue, Sep 3, 2024 at 7:15 PM Jiaxun Yang <jiaxun.yang@...goat.com> 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