Received-SPF: pass (google.com: domain of linux-kernel+bounces-62342-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1;
Precedence: bulk
MIME-Version: 1.0
References: <20240117-swiftly-parasail-618d62972d6e@spud> <CANiq72mVKCOAuK4Qe+8AHmpkFwyJsVfx8AqB7ccGi3DYpSSWcw@mail.gmail.com>
 <20240118-implode-delirium-eefdd86e170e@spud> <CANiq72nx1s_nyvPW86jL7eiOxROr18LfOJqNtw8L42CP+gkhRg@mail.gmail.com>
 <20240125-bucked-payroll-47f82077b262@wendy> <CANiq72k7n0aZrifRRU08N8qLkNe+2EZwijZy5sM7M56n2xYHgQ@mail.gmail.com>
 <20240125-lazy-thrower-744aacc6632a@wendy> <CANiq72kb+_utZrYHtoKZQtQazikmkjpVUHpTBcaANizduMF5QQ@mail.gmail.com>
 <20240126-eccentric-jaywalker-3560e2151a92@spud> <CANiq72nu2NXUWYanHZd5EXgX4P_v673EWn6SCRW60Es9naraQQ@mail.gmail.com>
 <20240209-rage-keg-1b2982cd17d9@spud> <CALNs47sRqAbE=u3=_ciO2oge7Afz-6GBBhW+BwcLRET-TsuxTg@mail.gmail.com>
 <CAOcBZOSfN8Yefez_Gy_T3_QTAd4HcLzmMCOoR37K2agWD_U_PQ@mail.gmail.com>
In-Reply-To: <CAOcBZOSfN8Yefez_Gy_T3_QTAd4HcLzmMCOoR37K2agWD_U_PQ@mail.gmail.com>
From: Sami Tolvanen <samitolvanen@google.com>
Date: Mon, 12 Feb 2024 12:36:15 -0800
Message-ID: <CABCJKueFuDkmUmXWbtA3DveQ719vdZx5kBQE1bZ1f6oD5zYNzA@mail.gmail.com>
Subject: Re: [PATCH v1 0/2] RISC-V: enable rust
To: Ramon de C Valle <rcvalle@google.com>
Cc: Trevor Gross <tmgross@umich.edu>, Conor Dooley <conor@kernel.org>, 
	Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>, Conor Dooley <conor.dooley@microchip.com>, 
	linux-riscv@lists.infradead.org, Miguel Ojeda <ojeda@kernel.org>, 
	Alex Gaynor <alex.gaynor@gmail.com>, Wedson Almeida Filho <wedsonaf@gmail.com>, 
	Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>, 
	=?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= <bjorn3_gh@protonmail.com>, 
	Jonathan Corbet <corbet@lwn.net>, Paul Walmsley <paul.walmsley@sifive.com>, 
	Palmer Dabbelt <palmer@dabbelt.com>, Nathan Chancellor <nathan@kernel.org>, 
	Nick Desaulniers <ndesaulniers@google.com>, Tom Rix <trix@redhat.com>, 
	rust-for-linux@vger.kernel.org, linux-doc@vger.kernel.org, 
	linux-kernel@vger.kernel.org, llvm@lists.linux.dev, 
	Matthew Maurer <mmaurer@google.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

On Mon, Feb 12, 2024 at 11:04=E2=80=AFAM Ramon de C Valle <rcvalle@google.c=
om> wrote:
>
> Sorry for the late reply. Sami might be the best person to answer
> this, but KCFI (not CFI) tests are lowered by passes that are
> architecture specific (see https://reviews.llvm.org/D119296), so we'd
> need to add support for RISC-V. There is no additional work required
> in the Rust compiler besides enabling it for the new target.

LLVM 17 added KCFI support for RISC-V. Sounds like it's just a
question of whether rustc uses a new enough version of LLVM then?

Sami