From: Leon Romanovsky <leon@kernel.org>
To: Linus Walleij <linus.walleij@linaro.org>,
"a. Miguel Ojeda" <miguel.ojeda.sandonis@gmail.com>
Cc: ksummit@lists.linux.dev
Subject: Re: [TECH TOPIC] Rust for Linux
Date: Tue, 6 Jul 2021 07:30:28 +0300 [thread overview]
Message-ID: <YOPcZE+WjlwNueTa@unreal> (raw)
In-Reply-To: <CACRpkdbbPEnNTLYSP-YP+hTnqhUGQ8FjJLNY_fpSNWWd8tCFTQ@mail.gmail.com>
On Tue, Jul 06, 2021 at 01:51:11AM +0200, Linus Walleij wrote:
> On Sat, Jun 26, 2021 at 12:09 AM Miguel Ojeda
> <miguel.ojeda.sandonis@gmail.com> wrote:
>
> > The Rust for Linux project is adding support for the Rust language to
> > the Linux kernel. This talk describes the work done so far and also
> > serves as an introduction for other kernel developers interested in
> > using Rust in the kernel.
>
> I think this is a good tech topic.
<...>
> Demonstrate how the Rust code now elegantly avoid
> ever seeing problems A,B,C again.
>
> From this it is very easy for the kernel community to deduce that
> introducing Rust as an implementation language is worth it.
I don't know about advantages of Rust, but from what I see there are
some disadvantages that no one talks about them.
1. The addition of another language to the mix will hurt a lot our
ability to refactor code for cross-subsystem changes.
Just as an example, there are many changes in DMA/SG areas that are
applicable for many drivers. Even simple grep->replace pattern will
be harder and longer if it is needed for the drivers that are written
in different languages.
2. Testing matrix will be duplicated, both in compilation tests and in
verification coverage. Even now, there are some kernel subsystems that
so much in-love with CONFIG_* options that their combination is slightly
tested or not tested at all. So imagine, we will need to recompile
everything with Rust too and execute same coverage tests again.
And yes, proper testing costs a lot of money, which IMHO better to
invest in improving coverage/fixing bugs/tooling instead of adding
new language to the pack.
Thanks
>
> Yours,
> Linus Walleij
>
next prev parent reply other threads:[~2021-07-06 4:30 UTC|newest]
Thread overview: 201+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-25 22:09 [TECH TOPIC] Rust for Linux Miguel Ojeda
2021-07-05 23:51 ` Linus Walleij
2021-07-06 4:30 ` Leon Romanovsky [this message]
2021-07-06 9:55 ` Linus Walleij
2021-07-06 10:16 ` Geert Uytterhoeven
2021-07-06 17:59 ` Linus Walleij
2021-07-06 18:36 ` Miguel Ojeda
2021-07-06 19:12 ` Linus Walleij
2021-07-06 21:32 ` Miguel Ojeda
2021-07-07 14:10 ` Arnd Bergmann
2021-07-07 15:28 ` Miguel Ojeda
2021-07-07 15:50 ` Andrew Lunn
2021-07-07 16:34 ` Miguel Ojeda
2021-07-07 16:55 ` Arnd Bergmann
2021-07-07 17:54 ` Miguel Ojeda
2021-07-06 10:22 ` Leon Romanovsky
2021-07-06 14:30 ` Miguel Ojeda
2021-07-06 14:32 ` Miguel Ojeda
2021-07-06 15:03 ` Sasha Levin
2021-07-06 15:33 ` Miguel Ojeda
2021-07-06 15:42 ` Laurent Pinchart
2021-07-06 16:09 ` Mike Rapoport
2021-07-06 18:29 ` Miguel Ojeda
2021-07-06 18:38 ` Laurent Pinchart
2021-07-06 19:45 ` Steven Rostedt
2021-07-06 19:59 ` Miguel Ojeda
2021-07-06 18:53 ` Sasha Levin
2021-07-06 21:50 ` Miguel Ojeda
2021-07-07 4:57 ` Leon Romanovsky
2021-07-07 13:39 ` Alexandre Belloni
2021-07-07 13:50 ` Miguel Ojeda
2021-07-06 18:26 ` Linus Walleij
2021-07-06 19:11 ` Miguel Ojeda
2021-07-06 19:13 ` Johannes Berg
2021-07-06 19:43 ` Miguel Ojeda
2021-07-06 10:20 ` James Bottomley
2021-07-06 14:55 ` Miguel Ojeda
2021-07-06 15:01 ` Sasha Levin
2021-07-06 15:36 ` Miguel Ojeda
2021-07-09 10:02 ` Marco Elver
2021-07-09 16:02 ` Miguel Ojeda
2021-07-06 18:09 ` Linus Walleij
2021-07-06 14:24 ` Miguel Ojeda
2021-07-06 14:33 ` Laurent Pinchart
2021-07-06 14:56 ` Leon Romanovsky
2021-07-06 15:29 ` Miguel Ojeda
2021-07-07 4:38 ` Leon Romanovsky
2021-07-06 20:00 ` Roland Dreier
2021-07-06 20:36 ` Linus Walleij
2021-07-06 22:00 ` Laurent Pinchart
2021-07-07 7:27 ` Julia Lawall
2021-07-07 7:45 ` Greg KH
2021-07-07 7:52 ` James Bottomley
2021-07-07 13:49 ` Miguel Ojeda
2021-07-07 14:08 ` James Bottomley
2021-07-07 15:15 ` Miguel Ojeda
2021-07-07 15:44 ` Greg KH
2021-07-07 17:01 ` Wedson Almeida Filho
2021-07-07 17:20 ` Greg KH
2021-07-07 19:19 ` Wedson Almeida Filho
2021-07-07 20:38 ` Jan Kara
2021-07-07 23:09 ` Wedson Almeida Filho
2021-07-08 6:11 ` Greg KH
2021-07-08 13:36 ` Wedson Almeida Filho
2021-07-08 18:51 ` Greg KH
2021-07-08 19:31 ` Andy Lutomirski
2021-07-08 19:35 ` Geert Uytterhoeven
2021-07-08 21:56 ` Andy Lutomirski
2021-07-08 19:49 ` Linus Walleij
2021-07-08 20:34 ` Miguel Ojeda
2021-07-08 22:13 ` Linus Walleij
2021-07-09 7:24 ` Geert Uytterhoeven
2021-07-19 12:24 ` Wedson Almeida Filho
2021-07-19 13:15 ` Wedson Almeida Filho
2021-07-19 14:02 ` Arnd Bergmann
2021-07-19 14:13 ` Linus Walleij
2021-07-19 21:32 ` Arnd Bergmann
2021-07-19 21:33 ` Arnd Bergmann
2021-07-20 1:46 ` Miguel Ojeda
2021-07-20 6:43 ` Johannes Berg
2021-07-19 14:43 ` Geert Uytterhoeven
2021-07-19 18:24 ` Miguel Ojeda
2021-07-19 18:47 ` Steven Rostedt
2021-07-19 14:54 ` Miguel Ojeda
2021-07-19 17:32 ` Wedson Almeida Filho
2021-07-19 21:31 ` Arnd Bergmann
2021-07-19 17:37 ` Miguel Ojeda
2021-07-19 16:02 ` Vegard Nossum
2021-07-19 17:45 ` Miguel Ojeda
2021-07-19 17:54 ` Miguel Ojeda
2021-07-19 18:06 ` Wedson Almeida Filho
2021-07-19 19:37 ` Laurent Pinchart
2021-07-19 21:09 ` Wedson Almeida Filho
2021-07-20 23:54 ` Laurent Pinchart
2021-07-21 1:33 ` Andy Lutomirski
2021-07-21 1:42 ` Laurent Pinchart
2021-07-21 13:54 ` Linus Walleij
2021-07-21 14:13 ` Wedson Almeida Filho
2021-07-21 14:19 ` Linus Walleij
2021-07-22 11:33 ` Wedson Almeida Filho
2021-07-23 0:45 ` Linus Walleij
2021-07-21 4:39 ` Wedson Almeida Filho
2021-07-23 1:04 ` Laurent Pinchart
2021-07-21 4:23 ` Wedson Almeida Filho
2021-07-23 1:13 ` Laurent Pinchart
2021-07-19 22:57 ` Alexandre Belloni
2021-07-20 7:15 ` Miguel Ojeda
2021-07-20 9:39 ` Alexandre Belloni
2021-07-20 12:10 ` Miguel Ojeda
2021-07-19 13:53 ` Linus Walleij
2021-07-19 14:42 ` Wedson Almeida Filho
2021-07-19 22:16 ` Linus Walleij
2021-07-20 1:20 ` Wedson Almeida Filho
2021-07-20 13:21 ` Andrew Lunn
2021-07-20 13:38 ` Miguel Ojeda
2021-07-20 14:04 ` Andrew Lunn
2021-07-20 13:55 ` Greg KH
2021-07-20 1:21 ` Miguel Ojeda
2021-07-20 16:00 ` Mark Brown
2021-07-20 22:42 ` Linus Walleij
2021-07-19 14:43 ` Miguel Ojeda
2021-07-19 15:15 ` Andrew Lunn
2021-07-19 15:43 ` Miguel Ojeda
2021-07-09 7:03 ` Viresh Kumar
2021-07-09 17:06 ` Mark Brown
2021-07-09 17:43 ` Miguel Ojeda
2021-07-10 9:53 ` Jonathan Cameron
2021-07-10 20:09 ` Kees Cook
2021-07-08 13:55 ` Miguel Ojeda
2021-07-08 14:58 ` Greg KH
2021-07-08 15:02 ` Mark Brown
2021-07-08 16:38 ` Andy Lutomirski
2021-07-08 18:01 ` Greg KH
2021-07-08 18:00 ` Miguel Ojeda
2021-07-08 18:44 ` Greg KH
2021-07-08 23:09 ` Miguel Ojeda
2021-07-08 7:20 ` Geert Uytterhoeven
2021-07-08 13:41 ` Wedson Almeida Filho
2021-07-08 13:43 ` Geert Uytterhoeven
2021-07-08 13:54 ` Wedson Almeida Filho
2021-07-08 14:16 ` Geert Uytterhoeven
2021-07-08 14:24 ` Wedson Almeida Filho
2021-07-09 7:04 ` Jerome Glisse
2021-07-08 14:04 ` Miguel Ojeda
2021-07-08 14:18 ` Geert Uytterhoeven
2021-07-08 14:28 ` Miguel Ojeda
2021-07-08 14:33 ` Geert Uytterhoeven
2021-07-08 14:35 ` Miguel Ojeda
2021-07-09 11:55 ` Geert Uytterhoeven
2021-07-08 16:07 ` Andy Lutomirski
2021-07-07 20:58 ` Miguel Ojeda
2021-07-07 21:47 ` Laurent Pinchart
2021-07-07 22:44 ` Miguel Ojeda
2021-07-07 17:01 ` Miguel Ojeda
2021-07-07 10:50 ` Mark Brown
2021-07-07 10:56 ` Julia Lawall
2021-07-07 11:27 ` James Bottomley
2021-07-07 11:34 ` James Bottomley
2021-07-07 12:20 ` Greg KH
2021-07-07 12:38 ` James Bottomley
2021-07-07 12:45 ` Greg KH
2021-07-07 17:17 ` Laurent Pinchart
2021-07-08 6:49 ` cdev/devm_* issues (was Re: [TECH TOPIC] Rust for Linux) Greg KH
2021-07-08 8:23 ` Laurent Pinchart
2021-07-08 23:06 ` Linus Walleij
2021-07-09 0:02 ` Dan Williams
2021-07-09 16:53 ` Wedson Almeida Filho
2021-07-13 8:59 ` Linus Walleij
[not found] ` <CAHp75VfW7PxAyU=eYPNWFU_oUY=aStz-4W5gX87KSo402YhMXQ@mail.gmail.com>
2021-07-21 13:46 ` Linus Walleij
2021-07-21 15:49 ` Andy Shevchenko
2021-07-10 7:09 ` Dan Carpenter
2021-07-12 13:42 ` Jason Gunthorpe
2021-07-15 9:54 ` Daniel Vetter
2021-07-21 9:08 ` Dan Carpenter
2021-07-22 9:56 ` Daniel Vetter
2021-07-22 10:09 ` Dan Carpenter
2021-07-08 9:08 ` [TECH TOPIC] Rust for Linux Mauro Carvalho Chehab
2021-07-10 16:42 ` Laurent Pinchart
2021-07-10 17:18 ` Andy Lutomirski
2021-07-07 15:17 ` Mark Brown
2021-07-06 21:45 ` Bart Van Assche
2021-07-06 23:08 ` Stephen Hemminger
2021-07-07 2:41 ` Bart Van Assche
2021-07-07 18:57 ` Linus Torvalds
2021-07-07 20:32 ` Bart Van Assche
2021-07-07 20:39 ` Linus Torvalds
2021-07-07 21:40 ` Laurent Pinchart
2021-07-08 7:22 ` Geert Uytterhoeven
2021-07-07 21:02 ` Laurent Pinchart
2021-07-07 22:11 ` Miguel Ojeda
2021-07-07 22:43 ` Laurent Pinchart
2021-07-07 23:21 ` Miguel Ojeda
2021-07-07 23:40 ` Laurent Pinchart
2021-07-08 0:27 ` Miguel Ojeda
2021-07-08 0:56 ` Laurent Pinchart
2021-07-08 6:26 ` Alexey Dobriyan
2021-07-06 19:05 ` Bart Van Assche
2021-07-06 19:27 ` Miguel Ojeda
2021-07-07 15:48 ` Steven Rostedt
2021-07-07 16:44 ` Miguel Ojeda
2023-08-07 10:03 Miguel Ojeda
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=YOPcZE+WjlwNueTa@unreal \
--to=leon@kernel.org \
--cc=ksummit@lists.linux.dev \
--cc=linus.walleij@linaro.org \
--cc=miguel.ojeda.sandonis@gmail.com \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).