linux-kernel - Re: [PATCH v2 1/3] rust: make mutually exclusive with CFI

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Message-ID: <CANiq72=geBobqM0Dc2yv=NjAc3MWXhOrDHfuJ84TgQ+XVxBo0w@mail.gmail.com>
Date: Tue, 27 Feb 2024 13:34:14 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Conor Dooley <conor.dooley@...rochip.com>, Nathan Chancellor <nathan@...nel.org>
Cc: Conor Dooley <conor@...nel.org>, Matthew Maurer <mmaurer@...gle.com>, 
	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>, 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, stable@...r.kernel.org, 
	Sami Tolvanen <samitolvanen@...gle.com>, Ramon de C Valle <rcvalle@...gle.com>
Subject: Re: [PATCH v2 1/3] rust: make mutually exclusive with CFI_CLANG

On Tue, Feb 27, 2024 at 11:54 AM Conor Dooley
<conor.dooley@...rochip.com> wrote:
>
> I did try to test it but I ran into too many toolchain issues - my
> older copies of LLVM (pre 17) are not multiarch as I built them by hand
> with PGO for x86 and RISC-V. My LLVM 17 is from kernel.org and has no
> libclang. And then the copy of LLVM 18 on kernel.org apparently does not
> support kcfi at all. I gave up there, but I don't see how this would not

I asked Nathan to add libclang a few days ago, and he very quickly did
it for LLVM 18 -- though I don't know the plan for the others. I just
pinged in that thread.

Cheers,
Miguel