linux-kernel - Re: [PATCH v2 2/3] scripts: generate_rust

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Date: Tue, 27 Feb 2024 13:12:51 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Conor Dooley <conor.dooley@...rochip.com>
Cc: Conor Dooley <conor@...nel.org>, linux-riscv@...ts.infradead.org, 
	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>, 
	Jonathan Corbet <corbet@....net>, Paul Walmsley <paul.walmsley@...ive.com>, 
	Palmer Dabbelt <palmer@...belt.com>, Nathan Chancellor <nathan@...nel.org>, 
	Nick Desaulniers <ndesaulniers@...gle.com>, Tom Rix <trix@...hat.com>, 
	rust-for-linux@...r.kernel.org, linux-doc@...r.kernel.org, 
	linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH v2 2/3] scripts: generate_rust_target: enable building on RISC-V

On Tue, Feb 27, 2024 at 12:05 PM Conor Dooley
<conor.dooley@...rochip.com> wrote:
>
> My point though was more
> that either this was acceptable for v6.9 or would be v6.10 material
> with the same mechanism as arm64. Rebasing after v6.9-rc1 but not
> adapting to that way of doing things is what seemed silly to me, since
> if a resend is required then the other improvements should be carried
> out at the same time.

If avoiding the `target.json` is possible, definitely.

I didn't want to assume it is, though -- e.g. the native integer
widths you have is 64 but the built-in targets use 32:64 (perhaps
there is a way to tweak it with an LLVM param via `-Cllvm-args`, but I
don't see any obvious way from a quick look; `opt` does have it,
though).

(That is why we supported `target.json`, since it gives the most
freedom in the beginning.)

Cheers,
Miguel