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From: "Gary Guo" <gary@garyguo.net>
To: "Daniel Almeida" <daniel.almeida@collabora.com>,
	"Gary Guo" <gary@garyguo.net>
Cc: "Alice Ryhl" <aliceryhl@google.com>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Boqun Feng" <boqun@kernel.org>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <lossin@kernel.org>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Trevor Gross" <tmgross@umich.edu>,
	"Tamir Duberstein" <tamird@kernel.org>,
	"Onur Özkan" <work@onurozkan.dev>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
	"Abdiel Janulgue" <abdiel.janulgue@gmail.com>,
	"Robin Murphy" <robin.murphy@arm.com>,
	"Alexandre Courbot" <acourbot@nvidia.com>,
	"David Airlie" <airlied@gmail.com>,
	"Simona Vetter" <simona@ffwll.ch>,
	"Michal Wilczynski" <m.wilczynski@samsung.com>,
	"Uwe Kleine-König" <ukleinek@kernel.org>,
	"Danilo Krummrich" <dakr@kernel.org>,
	driver-core@lists.linux.dev, rust-for-linux@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
	nova-gpu@lists.linux.dev, dri-devel@lists.freedesktop.org,
	linux-pwm@vger.kernel.org
Subject: Re: [PATCH v6 04/20] rust: io: implement `Io` on reference types instead
Date: Wed, 08 Jul 2026 13:05:38 +0100	[thread overview]
Message-ID: <DJT6CXCU2PRC.1ZUZFVVEDR6L7@garyguo.net> (raw)
In-Reply-To: <88183651-927C-4A64-A3C9-BC5C4FE6C831@collabora.com>

On Wed Jul 8, 2026 at 12:58 PM BST, Daniel Almeida wrote:
>
>> On 6 Jul 2026, at 09:44, Gary Guo <gary@garyguo.net> wrote:
>> 
>> Currently, `Io` is implemented on owned I/O objects (e.g. `Bar`). This is
>> going to change with I/O projections, as then `Io` needs to work both for
>> owned objects and views of them. Views are themselves reference-like
>> (however they obviously cannot be references, because they belong to a
>> different address space).
>> 
>> To facilitate the change, change `Io` to be implemented on reference types
>> for the owned I/O objects, and make methods take `self` instead of `&self`.
>> When I/O views are implemented, we can then naturally implement `Io` for
>> these objects.
>> 
>> Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
>> Signed-off-by: Gary Guo <gary@garyguo.net>
>> ---
>> rust/kernel/io.rs     | 82 ++++++++++++++++++++++++++-------------------------
>> rust/kernel/pci/io.rs | 12 ++++----
>> 2 files changed, 48 insertions(+), 46 deletions(-)
>> 
>
> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>

Hi Daniel,

Thanks for reviewing, however, it would be helpful if you can trim messages in
replies.

Thanks,
Gary


  reply	other threads:[~2026-07-08 12:05 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-06 12:44 [PATCH v6 00/20] rust: I/O type generalization and projection Gary Guo
2026-07-06 12:44 ` [PATCH v6 01/20] rust: io: add dynamically-sized `Region` type Gary Guo
2026-07-06 12:54   ` sashiko-bot
2026-07-07 17:14   ` Daniel Almeida
2026-07-07 20:02     ` Gary Guo
2026-07-08 10:34       ` Miguel Ojeda
2026-07-06 12:44 ` [PATCH v6 02/20] rust: io: add missing safety requirement in `IoCapable` methods Gary Guo
2026-07-06 13:00   ` sashiko-bot
2026-07-07 18:40   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 03/20] rust: io: restrict untyped IO access and `register!` to `Region` Gary Guo
2026-07-06 13:03   ` sashiko-bot
2026-07-08  0:23   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 04/20] rust: io: implement `Io` on reference types instead Gary Guo
2026-07-06 12:53   ` sashiko-bot
2026-07-08 11:58   ` Daniel Almeida
2026-07-08 12:05     ` Gary Guo [this message]
2026-07-06 12:44 ` [PATCH v6 05/20] rust: io: generalize `MmioRaw` to pointer to arbitrary type Gary Guo
2026-07-06 12:56   ` sashiko-bot
2026-07-08 12:22   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 06/20] rust: io: rename `Mmio` to `MmioOwned` Gary Guo
2026-07-06 12:57   ` sashiko-bot
2026-07-08 12:26   ` Daniel Almeida
2026-07-08 12:35   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 07/20] rust: io: implement `Mmio` as view type Gary Guo
2026-07-06 12:59   ` sashiko-bot
2026-07-08 13:10   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 08/20] rust: pci: io: make `ConfigSpace` a view Gary Guo
2026-07-06 12:51   ` sashiko-bot
2026-07-08 13:28   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 09/20] rust: io: use view types instead of addresses for `Io` Gary Guo
2026-07-06 12:57   ` sashiko-bot
2026-07-08 14:36   ` Daniel Almeida
2026-07-08 15:25     ` Miguel Ojeda
2026-07-06 12:44 ` [PATCH v6 10/20] pwm: th1520: remove unnecessary `deref` Gary Guo
2026-07-06 12:48   ` sashiko-bot
2026-07-08 14:37   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 11/20] rust: io: remove `MmioOwned` Gary Guo
2026-07-06 12:54   ` sashiko-bot
2026-07-08 14:48   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 12/20] rust: io: move `Io` methods to extension trait Gary Guo
2026-07-06 12:51   ` sashiko-bot
2026-07-08 15:15   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 13/20] rust: io: add projection macro and methods Gary Guo
2026-07-06 12:58   ` sashiko-bot
2026-07-08 17:58   ` Daniel Almeida
2026-07-06 12:44 ` [PATCH v6 14/20] rust: io: add I/O backend for system memory with volatile access Gary Guo
2026-07-06 13:01   ` sashiko-bot
2026-07-06 12:44 ` [PATCH v6 15/20] rust: io: implement a view type for `Coherent` Gary Guo
2026-07-06 13:03   ` sashiko-bot
2026-07-06 12:44 ` [PATCH v6 16/20] rust: io: add `read_val` and `write_val` functions on `Io` Gary Guo
2026-07-06 12:59   ` sashiko-bot
2026-07-06 12:44 ` [PATCH v6 17/20] gpu: nova-core: use I/O projection for cleaner encapsulation Gary Guo
2026-07-06 13:07   ` sashiko-bot
2026-07-06 12:44 ` [PATCH v6 18/20] rust: dma: drop `dma_read!` and `dma_write!` API Gary Guo
2026-07-06 13:10   ` sashiko-bot
2026-07-06 12:44 ` [PATCH v6 19/20] rust: io: add copying methods Gary Guo
2026-07-06 13:09   ` sashiko-bot
2026-07-07 12:17   ` Alexandre Courbot
2026-07-06 12:44 ` [PATCH v6 20/20] rust: io: implement `IoSysMap` Gary Guo
2026-07-06 12:59   ` sashiko-bot

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