From: Alice Ryhl <aliceryhl@google.com>
To: Deborah Brouwer <deborah.brouwer@collabora.com>
Cc: "Joerg Roedel (AMD)" <joro@8bytes.org>,
"Will Deacon" <will@kernel.org>,
"Robin Murphy" <robin.murphy@arm.com>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Boqun Feng" <boqun@kernel.org>, "Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Trevor Gross" <tmgross@umich.edu>,
"Danilo Krummrich" <dakr@kernel.org>,
iommu@lists.linux.dev, rust-for-linux@vger.kernel.org,
linux-kernel@vger.kernel.org, samitolvanen@google.com,
laura.nao@collabora.com, boris.brezillon@collabora.com,
daniel.almeida@collabora.com
Subject: Re: [PATCH v3] rust: iommu: add device lifetime to IoPageTable
Date: Mon, 6 Jul 2026 07:07:32 +0000 [thread overview]
Message-ID: <aktUNAUerQ7rHN1F@google.com> (raw)
In-Reply-To: <20260703-pgtable_lt_b4-v3-1-e738e1f513a4@collabora.com>
On Fri, Jul 03, 2026 at 05:28:44PM -0700, Deborah Brouwer wrote:
> Currently, using a raw IoPageTable is unsafe because the returned
> IoPageTable is not tied to the device driver binding lifetime.
>
> Since device drivers now receive a lifetime parameter <'bound>
> representing the interval during which a device driver is bound to its bus
> device, add a lifetime parameter to IoPageTable. This ensures that
> the returned IoPageTable cannot outlive the bus device binding.
>
> Also remove the option to create a page table as a device resource since
> currently Devres is not compatible with resources that have a lifetime
> parameter. This option can be restored once the lifetime-aware
> wrapper for devres is available and if a use-case appears for it.
>
> Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
> Signed-off-by: Deborah Brouwer <deborah.brouwer@collabora.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
next prev parent reply other threads:[~2026-07-06 7:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-04 0:28 [PATCH v3] rust: iommu: add device lifetime to IoPageTable Deborah Brouwer
2026-07-06 7:07 ` Alice Ryhl [this message]
2026-07-09 15:00 ` Danilo Krummrich
2026-07-09 15:46 ` Alice Ryhl
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