linux-kernel - Re: [PATCH v10 2/5] rust: io: separate generic I/O helpers from MMIO implementation

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Message-Id: <DFTJPCU9NQQ5.1J4RRDVZH3SX@kernel.org>
Date: Tue, 20 Jan 2026 17:09:13 +0100
From: "Danilo Krummrich" <dakr@...nel.org>
To: "Gary Guo" <gary@...yguo.net>
Cc: "Alice Ryhl" <aliceryhl@...gle.com>, "Zhi Wang" <zhiw@...dia.com>,
 <rust-for-linux@...r.kernel.org>, <linux-pci@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>, <bhelgaas@...gle.com>,
 <kwilczynski@...nel.org>, <ojeda@...nel.org>, <alex.gaynor@...il.com>,
 <boqun.feng@...il.com>, <bjorn3_gh@...tonmail.com>, <lossin@...nel.org>,
 <a.hindborg@...nel.org>, <tmgross@...ch.edu>, <markus.probst@...teo.de>,
 <helgaas@...nel.org>, <cjia@...dia.com>, <smitra@...dia.com>,
 <ankita@...dia.com>, <aniketa@...dia.com>, <kwankhede@...dia.com>,
 <targupta@...dia.com>, <acourbot@...dia.com>, <joelagnelf@...dia.com>,
 <jhubbard@...dia.com>, <zhiwang@...nel.org>, <daniel.almeida@...labora.com>
Subject: Re: [PATCH v10 2/5] rust: io: separate generic I/O helpers from
 MMIO implementation

On Tue Jan 20, 2026 at 4:59 PM CET, Gary Guo wrote:
> I think whether there's a runtime bound checking and whether a IO size is
> supported are two orthogonal things, I would rather we have a single series of
> `IoCapable<T>` to just indiate the latter and still keep the `IoKnownSize`.

I like this idea, it seems like a very reasonable compromise to me.