lkml.org 
[lkml]   [2020]   [Jul]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Linux kernel in-tree Rust support
On Sun, Jul 12, 2020 at 03:31:51PM +0300, Adrian Bunk wrote:
> On Thu, Jul 09, 2020 at 11:41:47AM -0700, Nick Desaulniers wrote:
> >...
> > but also a larger question of "should we do
> > this?" or "how might we place limits on where this can be used?"
> >...
>
> I won't attend, but I do have a topic that should be covered:
>
> Firefox always depends on recent Rust, which forces distributions to
> update Rust in stable releases.
>
> As an example:
> Ubuntu LTS releases upgrade to a new Rust version every 1-2 months.
> Ubuntu 16.04 started with Rust 1.7.0 and is now at Rust 1.41.0.
>
> It would not sound good to me if security updates of distribution
> kernels might additionally end up using a different version of the
> Rust compiler - the toolchain for the kernel should be stable.
>
> Would Rust usage in the kernel require distributions to ship
> a "Rust for Firefox" and a "Rust for the kernel"?

Rust has hard stability guarantees when upgrading from one stable
version to the next. If code compiles with a given stable version of
Rust, it'll compile with a newer stable version of Rust. Given that, a
stable distribution will just need a single sufficiently up-to-date Rust
that meets the minimum version requirements of both Firefox and Linux.

(That would not apply if the kernel used nightly Rust, since
nightly-only features are allowed to change before becoming stable;
that's one reason why we should use stable Rust, and try to get Firefox
to stick to stable Rust.)

\
 
 \ /
  Last update: 2020-07-12 21:40    [W:0.224 / U:2.992 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site