linux-kernel - Re: [RFC PATCH 0/5] Rust block device driver API and null block driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZfHu48NGktOx_uhG@boqun-archlinux>
Date: Wed, 13 Mar 2024 11:22:27 -0700
From: Boqun Feng <boqun.feng@...il.com>
To: Bart Van Assche <bvanassche@....org>
Cc: Andreas Hindborg <nmi@...aspace.dk>, Jens Axboe <axboe@...nel.dk>,
	Christoph Hellwig <hch@....de>, Keith Busch <kbusch@...nel.org>,
	Damien Le Moal <Damien.LeMoal@....com>,	Hannes Reinecke <hare@...e.de>,
	"linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
	Andreas Hindborg <a.hindborg@...sung.com>,
	Niklas Cassel <Niklas.Cassel@....com>,
	Greg KH <gregkh@...uxfoundation.org>,
	Matthew Wilcox <willy@...radead.org>,	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Wedson Almeida Filho <wedsonaf@...il.com>,	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,	Alice Ryhl <aliceryhl@...gle.com>,
	Chaitanya Kulkarni <chaitanyak@...dia.com>,
	Luis Chamberlain <mcgrof@...nel.org>,
	Yexuan Yang <1182282462@...t.edu.cn>,
	Sergio González Collado <sergio.collado@...il.com>,
	Joel Granados <j.granados@...sung.com>,
	"Pankaj Raghav (Samsung)" <kernel@...kajraghav.com>,
	Daniel Gomez <da.gomez@...sung.com>,
	open list <linux-kernel@...r.kernel.org>,
	"rust-for-linux@...r.kernel.org" <rust-for-linux@...r.kernel.org>,
	"lsf-pc@...ts.linux-foundation.org" <lsf-pc@...ts.linux-foundation.org>,
	"gost.dev@...sung.com" <gost.dev@...sung.com>
Subject: Re: [RFC PATCH 0/5] Rust block device driver API and null block
 driver

On Wed, Mar 13, 2024 at 11:02:23AM -0700, Bart Van Assche wrote:
> On 3/13/24 04:05, Andreas Hindborg wrote:
> > This is the second version of the Rust block device driver API and the Rust null
> > block driver. The context and motivation can be seen in cover letter of the RFC
> > v1 [1]. If more context is required, a talk about this effort was recorded at
> > LPC [2]. I hope to be able to discuss this series at LSF this year [3].
> 
> Memory safety may land in C++ in the near future (see also
> https://herbsutter.com/2024/03/). If memory-safe C++ or memory-safe C
> would be adopted in the kernel, it would allow writing memory-safe
> drivers without having to add complicated bindings between existing C

I honestly doubt it, memory-safe is not free, basically you will still
want unsafe part for the performance reason (or interacting with
hardware), and provide a safe API for driver development. I don't think
that part will be gone with a memory-safe C++. So the complication still
exists. But I'm happy to be proved wrong ;-)

Regards,
Boqun

> code and new Rust code. Please do not take this as personal criticism -
> I appreciate the effort that has been spent on coming up with great
> Rust bindings for the Linux kernel block layer.
> 
> Thanks,
> 
> Bart.
>