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Message-ID: <000001d999dd$f5166cd0$df434670$@samsung.com>
Date:   Thu, 8 Jun 2023 16:50:55 +0900
From:   "Kwanghoon Son" <k.son@...sung.com>
To:     "'Conor Dooley'" <conor.dooley@...rochip.com>,
        <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>
Subject: RE: [PATCH v1 0/2] RISC-V: enable rust

> Hey Kwang,
> 
> > 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.

No rush! I was just curious.
Thank you for the explanation!

> 
> Cheers,
> Conor.

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