linux-kernel - Re: [PATCH v2] rust: irq: add &Device<Bound> argument to irq callbacks

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: <19D30F1F-BA10-4C38-A0A8-1C0072516B55@collabora.com>
Date: Mon, 11 Aug 2025 09:38:41 -0300
From: Daniel Almeida <daniel.almeida@...labora.com>
To: Alice Ryhl <aliceryhl@...gle.com>
Cc: Miguel Ojeda <ojeda@...nel.org>,
 Boqun Feng <boqun.feng@...il.com>,
 Gary Guo <gary@...yguo.net>,
 Björn Roy Baron <bjorn3_gh@...tonmail.com>,
 Andreas Hindborg <a.hindborg@...nel.org>,
 Trevor Gross <tmgross@...ch.edu>,
 Danilo Krummrich <dakr@...nel.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>,
 Thomas Gleixner <tglx@...utronix.de>,
 Bjorn Helgaas <bhelgaas@...gle.com>,
 Krzysztof Wilczyński <kwilczynski@...nel.org>,
 Benno Lossin <lossin@...nel.org>,
 Dirk Behme <dirk.behme@...il.com>,
 linux-kernel@...r.kernel.org,
 rust-for-linux@...r.kernel.org,
 linux-pci@...r.kernel.org
Subject: Re: [PATCH v2] rust: irq: add &Device<Bound> argument to irq
 callbacks

> On 11 Aug 2025, at 09:33, Alice Ryhl <aliceryhl@...gle.com> wrote:
> 
> When working with a bus device, many operations are only possible while
> the device is still bound. The &Device<Bound> type represents a proof in
> the type system that you are in a scope where the device is guaranteed
> to still be bound. Since we deregister irq callbacks when unbinding a
> device, if an irq callback is running, that implies that the device has
> not yet been unbound.
> 
> To allow drivers to take advantage of that, add an additional argument
> to irq callbacks.
> 
> Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>
> ---
> This patch is a follow-up to Daniel's irq series [1] that adds a
> &Device<Bound> argument to all irq callbacks. This allows you to use
> operations that are only safe on a bound device inside an irq callback.
> 
> [1]: https://lore.kernel.org/all/20250810-topics-tyr-request_irq2-v8-0-8163f4c4c3a6@collabora.com/
> ---
> Changes in v2:
> - Rebase on v8 of [1] (and hence v6.17-rc1).
> 

Thanks, I’ll apply on top of the series as a convenience to the maintainers.

— Daniel