linux-kernel - Re: [PATCH v1 0/2] RISC-V: enable rust

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Date:   Thu, 8 Jun 2023 08:10:21 +0100
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     <linux-riscv@...ts.infradead.org>
CC:     <conor@...nel.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>, <k.son@...sung.com>
Subject: Re: [PATCH v1 0/2] RISC-V: enable rust

Whoops, actually to Kwang this time...

On Thu, Jun 08, 2023 at 08:01:16AM +0100, Conor Dooley wrote:
> Hey Kwang,
> 
> On 08/06/2023 05:46, 손광훈/Tizen Platform Lab(SR)/삼성전자 wrote:
> > Hi,
> > Recently I'm trying to put a rust patch on the risc-v board.
> > I saw a patch [1] and looked through it roughly.
> > Only if llvm(not gcc) is allowed, it looks good with no major problems.
> > 
> > > I'll revisit this when my thoughts have settled down.
> > 
> > If you let me know the problematic part, may I try the patch?
> > 
> > [1] https://lore.kernel.org/linux-riscv/20230405-itinerary-handgrip-
> > a5ffba368148@...d/
> 
> Yeah, you can definitely try this or the downstream rust-for-linux
> project - both should work well on RISC-V.
> The problematic part is figuring out what ISA extensions are supported
> by the rust compiler being used (and by bindgen), and deciding what to
> put in -march as a result.
> 
> I think it is unlikely to matter for you, unless you're aggressively
> mixing versions for different parts of your toolchain.
> 
> I do intend revisting this, probably after the min. version for rust
> gets bumped, I've just been really busy with other work the last weeks.
> 
> Cheers,
> Conor.



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