linux-kernel - Re: [RFC PATCH 00/11] [RFC] Device / Driver and PCI Rust abstractions

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Message-ID: <2024052029-unbridle-wildcard-fbf8@gregkh>
Date: Mon, 20 May 2024 20:14:57 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Danilo Krummrich <dakr@...hat.com>
Cc: rafael@...nel.org, bhelgaas@...gle.com, ojeda@...nel.org,
	alex.gaynor@...il.com, wedsonaf@...il.com, boqun.feng@...il.com,
	gary@...yguo.net, bjorn3_gh@...tonmail.com, benno.lossin@...ton.me,
	a.hindborg@...sung.com, aliceryhl@...gle.com, airlied@...il.com,
	fujita.tomonori@...il.com, lina@...hilina.net, pstanner@...hat.com,
	ajanulgu@...hat.com, lyude@...hat.com,
	rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: Re: [RFC PATCH 00/11] [RFC] Device / Driver and PCI Rust abstractions

On Mon, May 20, 2024 at 07:25:37PM +0200, Danilo Krummrich wrote:
> This patch sereis implements basic generic device / driver Rust abstractions,
> as well as some basic PCI abstractions.
> 
> This patch series is sent in the context of [1], and the corresponding patch
> series [2], which contains some basic DRM Rust abstractions and a stub
> implementation of the Nova GPU driver.
> 
> Nova is intended to be developed upstream, starting out with just a stub driver
> to lift some initial required infrastructure upstream. A more detailed
> explanation can be found in [1].
> 
> Some patches, which implement the generic device / driver Rust abstractions have
> been sent a couple of weeks ago already [3]. For those patches the following
> changes have been made since then:
> 
> - remove RawDevice::name()
> - remove rust helper for dev_name() and dev_get_drvdata()
> - use AlwaysRefCounted for struct Device
> - drop trait RawDevice entirely in favor of AsRef and provide
>   Device::from_raw(), Device::as_raw() and Device::as_ref() instead
> - implement RevocableGuard
> - device::Data, remove resources and replace it with a Devres abstraction
> - implement Devres abstraction for resources
> 
> As mentioned above, a driver serving as example on how these abstractions are
> used within a (DRM) driver can be found in [2].
> 
> Additionally, the device / driver bits can also be found in [3], all
> abstractions required for Nova in [4] and Nova in [5].
> 
> [1] https://lore.kernel.org/dri-devel/Zfsj0_tb-0-tNrJy@cassiopeiae/T/#u
> [2] https://lore.kernel.org/dri-devel/20240520172059.181256-1-dakr@redhat.com/
> [3] https://github.com/Rust-for-Linux/linux/tree/staging/rust-device
> [4] https://github.com/Rust-for-Linux/linux/tree/staging/dev
> [5] https://gitlab.freedesktop.org/drm/nova/-/tree/nova-next
> 
> Danilo Krummrich (2):
>   rust: add abstraction for struct device
>   rust: add devres abstraction
> 
> FUJITA Tomonori (1):
>   rust: add basic PCI driver abstractions
> 
> Philipp Stanner (2):
>   rust: add basic abstractions for iomem operations
>   rust: PCI: add BAR request and ioremap
> 
> Wedson Almeida Filho (6):
>   rust: add driver abstraction
>   rust: add rcu abstraction
>   rust: add revocable mutex
>   rust: add revocable objects
>   rust: add device::Data
>   rust: add `dev_*` print macros.

No list of the changes made since the last time this was submitted?

No versioning of this submission?

Why not?

thanks,

greg k-h