linux-kernel - Re: linux-next: build failure after merge of the tip tree

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

Message-ID: <20251124163315.GL4068168@noisy.programming.kicks-ass.net>
Date: Mon, 24 Nov 2025 17:33:15 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc: Boqun Feng <boqun.feng@...il.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Next Mailing List <linux-next@...r.kernel.org>,
	ojeda@...nel.org, Danilo Krummrich <dakr@...nel.org>,
	Alexandre Courbot <acourbot@...dia.com>,
	nouveau@...ts.freedesktop.org, Alice Ryhl <aliceryhl@...gle.com>
Subject: Re: linux-next: build failure after merge of the tip tree

On Mon, Nov 24, 2025 at 03:55:44PM +0100, Peter Zijlstra wrote:
> On Mon, Nov 24, 2025 at 03:51:46PM +0100, Miguel Ojeda wrote:
> > On Mon, Nov 24, 2025 at 3:47 PM Peter Zijlstra <peterz@...radead.org> wrote:
> 
> > By the way, I have had this patch around for RANDSTRUCT a long time:
> > 
> >     https://lore.kernel.org/rust-for-linux/20241119185747.862544-1-ojeda@kernel.org/
> > 
> > More than glad if someone confirms it works for them...
> 
> /me mumbles something about using clang to inject C IR into the Rust
> thing and kicking bindgen to the curb :-)

FWIW it might be relatively simple to abuse precompiled headers for
this. Generate the pch files using clang and the normal linux build
flags, then let rust do something like:

  unsafe extern "C" include "header.h.pch"

or whatever fits the syntax best -- some day I'll get around to learning
this thing.

That way you can fairly trivially inject AST/IR from another language --
including all the inline functions and inline asm bits.