LKML Archive on lore.kernel.org
 help / color / Atom feed
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
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.)

  reply index

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-09 18:41 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
2020-07-11 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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200712193944.GA81641@localhost \
    --to=josh@joshtriplett.org \
    --cc=alex.gaynor@gmail.com \
    --cc=bunk@kernel.org \
    --cc=clang-built-linux@googlegroups.com \
    --cc=geofft@ldpreload.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=jbaublitz@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=masahiroy@kernel.org \
    --cc=miguel.ojeda.sandonis@gmail.com \
    --cc=ndesaulniers@google.com \
    --cc=rostedt@goodmis.org \
    --cc=torvalds@linux-foundation.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

LKML Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/lkml/0 lkml/git/0.git
	git clone --mirror https://lore.kernel.org/lkml/1 lkml/git/1.git
	git clone --mirror https://lore.kernel.org/lkml/2 lkml/git/2.git
	git clone --mirror https://lore.kernel.org/lkml/3 lkml/git/3.git
	git clone --mirror https://lore.kernel.org/lkml/4 lkml/git/4.git
	git clone --mirror https://lore.kernel.org/lkml/5 lkml/git/5.git
	git clone --mirror https://lore.kernel.org/lkml/6 lkml/git/6.git
	git clone --mirror https://lore.kernel.org/lkml/7 lkml/git/7.git
	git clone --mirror https://lore.kernel.org/lkml/8 lkml/git/8.git
	git clone --mirror https://lore.kernel.org/lkml/9 lkml/git/9.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 lkml lkml/ https://lore.kernel.org/lkml \
		linux-kernel@vger.kernel.org
	public-inbox-index lkml

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kernel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git