From: Matthew Wilcox <willy@infradead.org>
To: Wedson Almeida Filho <wedsonaf@google.com>
Cc: Finn Behrens <finn@kloenk.dev>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
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: Fri, 23 Jul 2021 02:17:58 +0100 [thread overview]
Message-ID: <YPoYxiq63QcfUXg+@casper.infradead.org> (raw)
In-Reply-To: <YPn3fgDX8uNkF8Vp@google.com>
On Thu, Jul 22, 2021 at 11:55:58PM +0100, Wedson Almeida Filho wrote:
> Hey Matthew,
>
> On Thu, Jul 08, 2021 at 01:58:32AM +0100, Matthew Wilcox wrote:
> > Why are you so resistant to writing a real driver that deals with actual
> > hardware?
>
> I don't think it was so much resistance but rather a prioritisation thing. Have
> you by any chance seen the gpio driver I posted a couple of days ago?
I haven't seen it, no ...
> > A simple NVMe driver is less than a thousand lines of C.
> > I know the one in the kernel now is ridiculously complicated and has
> > been thoroughly messed up with abstractions to support NVMeoF instead
> > of having a separate driver, but it's really a simple interface at heart.
>
> The latest NVMe spec is 452 pages long, which seems to contradict your claim
> that it's simple.
As I said, they've put all kinds of crap into NVMe these days.
If you look at the 1.0e spec, it's 127 pages.
> In any case, translating less than 1K lines of C shouldn't be
> too hard (after I've built the abstractions, of course). Would you mind sharing
> the simple driver you mention above?
Unfortunately, most of the early versions were lost during the
kernel.org breakin. If you check out commit 5da273fe3fd1 and look at
drivers/block/nvme.c, you'll see a driver that's about 2000 lines.
next prev parent reply other threads:[~2021-07-23 1:18 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
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 [this message]
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
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