linux-kernel - RISC-V: Re-enable GCC+Rust builds

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <68496eed-b5a4-4739-8d84-dcc428a08e20@gmail.com>
Date: Sat, 30 Aug 2025 13:00:56 +0800
From: Asuna Yang <spriteovo@...il.com>
To: Conor Dooley <conor@...nel.org>, Jason Montleon <jmontleo@...hat.com>,
 Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>,
 Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
 Björn Roy Baron <bjorn3_gh@...tonmail.com>,
 Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>,
 Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
 Danilo Krummrich <dakr@...nel.org>, Paul Walmsley
 <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>,
 Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-riscv@...ts.infradead.org, Asuna Yang <SpriteOvO@...il.com>
Subject: RISC-V: Re-enable GCC+Rust builds

I noticed that GCC+Rust builds for RISC-V were disabled about a year 
ago, as discussed in
https://lore.kernel.org/all/20240917000848.720765-1-jmontleo@redhat.com/

I'm a bit lost here. What are the main obstacles to re-enabling GCC 
builds now?

Conor said:
 > Okay. Short term then is deny gcc + rust, longer term is allow it 
with the same caveats as the aforementioned mixed stuff.
"the same caveats" means detecting what specifically?

We have a RISC-V PWM driver being written in Rust. Currently, GCC being 
disabled for building the kernel with Rust for RISC-V is the primary 
blocker for including these drivers in RISC-V distros. Therefore, I'd 
like to push forward and contribute to the re-enabling of GCC builds. Is 
there a more detailed direction on what I can do here?

Thanks.