All of lore.kernel.org
 help / color / mirror / Atom feed
From: Finn Behrens <finn@kloenk.dev>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Wedson Almeida Filho <wedsonaf@google.com>,
	Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
	Christoph Hellwig <hch@infradead.org>,
	Miguel Ojeda <ojeda@kernel.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	rust-for-linux <rust-for-linux@vger.kernel.org>,
	Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
	Linux Doc Mailing List <linux-doc@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 00/17] Rust support
Date: Wed, 7 Jul 2021 22:56:57 +0200	[thread overview]
Message-ID: <BFD5298D-00CD-4FEF-AE77-61E69AF78604@kloenk.dev> (raw)
In-Reply-To: <YOXB7FRqldZik2Xn@kroah.com>



> On 7. Jul 2021, at 17:02, Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
> 
> On Wed, Jul 07, 2021 at 03:07:50PM +0100, Wedson Almeida Filho wrote:
>>> Last I looked at this thing, it was not
>>> feature-complete compared to the in-kernel binder code, has that been
>>> resolved and the needed filesystem changes added?
>> 
>> It is not feature-complete in comparison to the C one just yet, it is missing a
>> few things but not for any fundamental reason -- we were mostly focusing on the
>> kernel crate and tests.
> 
> I love it how you call "binderfs is missing" a "few things" :)
> 
>> Miguel's point is that it does implement the vast majority of binder features
>> and is non-trivial, so it could be used as evidence that useful kernel drivers
>> can be built with Rust; not just "transpiled" from C, but written with the Rust
>> safety guarantees.
> 
> As Christoph said, and I and others have said before, binder is in no
> way shape or form anything that resembles any sort of "driver" at all.
> It is a crazy IPC mechanism that is tacked onto the side of the kernel.
> Not to say that it doesn't have its usages, but the interactions between
> binder and the rest of the kernel are very small and specific.
> Something that almost no one else will ever write again.
> 
> Please work on a real driver to help prove, or disprove, that this all
> is going to be able to work properly.  There are huge unanswered
> questions that need to be resolved that you will run into when you do
> such a thing.
> 

There is a more general use driver (network dummy) still in the making, It is fully operational, just the documentation of the rust bindings are not finished yet, so it is not merged into the rust tree yet, also I have to rebase it.
I testet the network dummy (dummyrs) driver and for stupid tests like Iperf3 or ping it performed slightly better that the C version. See https://github.com/Kloenk/linux/blob/rust-netdevice/drivers/net/dummy_rs.rs for the actually driver.

Yes this driver is still only virtually, but the network apis are probably more general usage than the binder apis.

> Good luck!
> 
> greg k-h

CU,
Finn


  reply	other threads:[~2021-07-07 21:03 UTC|newest]

Thread overview: 73+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-04 20:27 [PATCH 00/17] Rust support ojeda
2021-07-04 20:27 ` [PATCH 01/17] kallsyms: support big kernel symbols (2-byte lengths) ojeda
2021-07-04 20:52   ` Linus Torvalds
2021-07-04 21:15     ` Miguel Ojeda
2021-07-04 21:28       ` Linus Torvalds
2021-07-04 21:04   ` Matthew Wilcox
2021-07-04 21:17     ` Miguel Ojeda
2021-07-04 21:33       ` Matthew Wilcox
2021-07-04 21:49         ` Matthew Wilcox
2021-07-04 22:07           ` Miguel Ojeda
2021-07-04 22:20         ` Gary Guo
2021-07-04 22:42           ` Matthew Wilcox
2021-07-04 23:14             ` Gary Guo
2021-07-13 18:02             ` Kent Overstreet
2021-07-04 21:20     ` Gary Guo
2021-07-05  4:35       ` Willy Tarreau
2021-07-04 20:27 ` [PATCH 02/17] kallsyms: increase maximum kernel symbol length to 512 ojeda
2021-07-14 18:20   ` Nick Desaulniers
2021-07-14 19:04     ` Linus Torvalds
2021-07-14 20:09       ` Eric W. Biederman
2021-07-14 20:21         ` Linus Torvalds
2021-07-14 20:48           ` Eric W. Biederman
2021-07-14 22:40             ` Linus Torvalds
2021-07-14 20:19     ` Miguel Ojeda
2021-07-04 20:27 ` [PATCH 03/17] Makefile: generate `CLANG_FLAGS` even in GCC builds ojeda
2021-07-14 18:13   ` Nick Desaulniers
2021-07-14 18:16     ` Nick Desaulniers
2021-07-14 20:31     ` Miguel Ojeda
2021-07-04 20:27 ` [PATCH 04/17] vsprintf: add new `%pA` format specifier ojeda
2021-07-07 20:31   ` Nick Desaulniers
2021-07-07 22:33     ` Miguel Ojeda
2021-07-04 20:27 ` [PATCH 05/17] rust: add C helpers ojeda
2021-07-07 10:19   ` Marco Elver
2021-07-09 10:31     ` Marco Elver
2021-07-09 14:32     ` Miguel Ojeda
2021-07-04 20:27 ` [PATCH 06/17] rust: add `compiler_builtins` crate ojeda
2021-07-04 20:27 ` [PATCH 07/17] rust: add `alloc` crate ojeda
2021-07-04 20:27 ` [PATCH 08/17] rust: add `build_error` crate ojeda
2021-07-04 20:27 ` [PATCH 09/17] rust: add `macros` crate ojeda
2021-07-04 20:27 ` [PATCH 10/17] rust: add `kernel` crate ojeda
2021-07-04 20:27 ` [PATCH 11/17] rust: export generated symbols ojeda
2021-07-04 20:27 ` [PATCH 12/17] Kbuild: add Rust support ojeda
2021-07-04 20:27 ` [PATCH 13/17] docs: add Rust documentation ojeda
2021-07-05  5:02   ` Willy Tarreau
2021-07-06  0:06     ` Miguel Ojeda
2021-07-06  2:09       ` Willy Tarreau
2021-07-14 18:37   ` Nick Desaulniers
2021-07-14 19:55     ` Miguel Ojeda
2021-07-04 20:27 ` [PATCH 14/17] samples: add Rust examples ojeda
2021-07-04 20:27 ` [PATCH 15/17] scripts: add `generate_rust_analyzer.py` ojeda
2021-07-05  5:05   ` Willy Tarreau
2021-07-05 23:41     ` Miguel Ojeda
2021-07-04 20:27 ` [PATCH 16/17] MAINTAINERS: Rust ojeda
2021-07-06  0:26   ` Pedro Tammela
2021-07-06 22:14     ` Miguel Ojeda
2021-07-04 20:27 ` [RFC PATCH 17/17] Android: Binder IPC in Rust (WIP) ojeda
2021-07-04 23:11 ` [PATCH 00/17] Rust support Miguel Ojeda
2021-07-07  6:43 ` Christoph Hellwig
2021-07-07 12:33   ` Miguel Ojeda
2021-07-07 12:50     ` Greg Kroah-Hartman
2021-07-07 14:07       ` Wedson Almeida Filho
2021-07-07 14:12         ` Christoph Hellwig
2021-07-07 15:02         ` Greg Kroah-Hartman
2021-07-07 20:56           ` Finn Behrens [this message]
2021-07-08  0:58             ` Matthew Wilcox
2021-07-08  6:39               ` [PATCH 00/17] Rust support, NVMe Geert Stappers
2021-07-08  8:29                 ` Finn Behrens
2021-07-22 22:55               ` [PATCH 00/17] Rust support Wedson Almeida Filho
2021-07-23  1:17                 ` Matthew Wilcox
2021-07-23 11:33                   ` [PATCH 00/17] Rust support, GPIO driver Geert Stappers
2021-07-23 15:08                 ` [PATCH 00/17] Rust support Keith Busch
2021-07-07 10:51 ` Marco Elver
2021-07-07 11:28   ` 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=BFD5298D-00CD-4FEF-AE77-61E69AF78604@kloenk.dev \
    --to=finn@kloenk.dev \
    --cc=gregkh@linuxfoundation.org \
    --cc=hch@infradead.org \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kbuild@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=miguel.ojeda.sandonis@gmail.com \
    --cc=ojeda@kernel.org \
    --cc=rust-for-linux@vger.kernel.org \
    --cc=torvalds@linux-foundation.org \
    --cc=wedsonaf@google.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.