From: Josh Triplett <josh@joshtriplett.org>
To: Adrian Bunk <bunk@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>,
alex.gaynor@gmail.com, geofft@ldpreload.com,
jbaublitz@redhat.com, Masahiro Yamada <masahiroy@kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Greg KH <gregkh@linuxfoundation.org>,
Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
LKML <linux-kernel@vger.kernel.org>,
clang-built-linux <clang-built-linux@googlegroups.com>
Subject: Re: Linux kernel in-tree Rust support
Date: Sun, 12 Jul 2020 12:39:44 -0700 [thread overview]
Message-ID: <20200712193944.GA81641@localhost> (raw)
In-Reply-To: <20200712123151.GB25970@localhost>
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.)
next prev parent reply other threads:[~2020-07-12 19:40 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-09 18:41 Linux kernel in-tree Rust support Nick Desaulniers
2020-07-09 20:52 ` Miguel Ojeda
2020-07-10 5:36 ` Josh Triplett
2020-07-10 6:28 ` Greg KH
2020-07-10 12:50 ` Christian Brauner
2020-07-10 16:10 ` Kees Cook
[not found] ` <CAFRnB2WNo45J8h3-ncopLKENvcO0rf7J3xsy_eRKwFSpDD-5sQ@mail.gmail.com>
2020-07-10 23:05 ` Kees Cook
2020-07-10 22:59 ` Josh Triplett
2020-07-10 23:54 ` Linus Torvalds
2020-07-11 21:03 ` Josh Triplett
2020-07-28 20:40 ` Pavel Machek
2020-07-29 6:34 ` Josh Triplett
2020-12-17 21:45 ` Pavel Machek
2020-12-18 3:31 ` Miguel Ojeda
2020-07-11 17:13 ` Geoffrey Thomas
2020-07-12 12:31 ` Adrian Bunk
2020-07-12 19:39 ` Josh Triplett [this message]
2020-07-12 20:33 ` Linus Torvalds
2020-07-12 20:45 ` Adrian Bunk
2020-07-14 8:27 ` David Laight
2020-07-16 13:06 ` Arnd Bergmann
2020-07-16 23:12 ` Josh Triplett
2020-07-19 18:19 ` Adrian Bunk
2020-07-20 14:46 ` David Laight
2020-08-23 21:02 ` Adrian Bunk
2020-08-23 21:54 ` Geoffrey Thomas
2020-07-13 18:11 ` Eric W. Biederman
2020-07-13 21:33 ` Josh Triplett
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