On Thu, Feb 05, 2026 at 09:12:01PM +0530, Mukesh Kumar Chaurasiya wrote:
[...]
> use rust version nightly-2026-01-28
>
> the latest one has some issue. I just raised a bug for the rustc
> here[1].
>
> [1] https://github.com/rust-lang/rust/issues/152177
Another reason to use a nightly version is that Rust inline assembly for
PowerPC will only be stabilized[1] in version 1.94, so current release
versions fail like this (tested with 1.91.1):
error[E0658]: inline assembly is not stable yet on this architecture
--> ../rust/kernel/sync/barrier.rs:19:14
|
19 | unsafe { core::arch::asm!("") };
| ^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #93335
<https://github.com/rust-lang/rust/issues/93335> for more information
= help: add `#![feature(asm_experimental_arch)]` to the crate attributes
to enable
= note: this compiler was built on 2025-11-07; consider upgrading it if
it is out of date
This is somewhat at odds with Documentation/process/changes.rst which
only requires Rust 1.78. I wonder if the rust version requirement should
generally be bumped, or if there should be arch-specific requirements
somewhere in changes.rst or rust/arch-support.rst.
Best regards,
J. Neuschäfer
[1]: https://github.com/rust-lang/rust/pull/147996
