linux-kernel - Re: [PATCH 0/3] Miscdevices in Rust

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Message-ID: <2024092647-subgroup-aqueduct-ec24@gregkh>
Date: Thu, 26 Sep 2024 17:05:36 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Alice Ryhl <aliceryhl@...gle.com>
Cc: Arnd Bergmann <arnd@...db.de>, Miguel Ojeda <ojeda@...nel.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Trevor Gross <tmgross@...ch.edu>, rust-for-linux@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] Miscdevices in Rust

On Thu, Sep 26, 2024 at 02:58:54PM +0000, Alice Ryhl wrote:
> A misc device is generally the best place to start with your first Rust
> driver, so having abstractions for miscdevice in Rust will be important
> for our ability to teach Rust to kernel developers.
> 
> I intend to add a sample driver using these abstractions, and I also
> intend to use it in Rust Binder to handle the case where binderfs is
> turned off.
> 
> I know that the patchset is still a bit rough. It could use some work on
> the file position aspect. But I'm sending this out now to get feedback
> on the overall approach.

Very cool!

> This patchset depends on files [1] and vma [2].
>
> Link: https://lore.kernel.org/all/20240915-alice-file-v10-0-88484f7a3dcf@google.com/ [1]
> Link: https://lore.kernel.org/all/20240806-vma-v5-1-04018f05de2b@google.com/ [2]
> Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>

Does it really need all of those dependencies?  I know your development
stack is deep here, but maybe I can unwind a bit of the file stuff to
get this in for the next merge window (6.13-rc1) if those two aren't
going to be planned for there.

I'll look into this some more next week, thanks!

greg k-h