From: Deborah Brouwer <deborah.brouwer@collabora.com>
To: Alice Ryhl <aliceryhl@google.com>
Cc: "Miguel Ojeda" <ojeda@kernel.org>,
"Will Deacon" <will@kernel.org>,
"Daniel Almeida" <daniel.almeida@collabora.com>,
"Boris Brezillon" <boris.brezillon@collabora.com>,
"Robin Murphy" <robin.murphy@arm.com>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Boqun Feng" <boqun.feng@gmail.com>,
"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>,
"Joerg Roedel" <joro@8bytes.org>,
"Lorenzo Stoakes" <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
"Asahi Lina" <lina+kernel@asahilina.net>,
linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org,
iommu@lists.linux.dev, linux-mm@kvack.org
Subject: Re: [PATCH v5] io: add io_pgtable abstraction
Date: Tue, 13 Jan 2026 13:50:33 -0800 [thread overview]
Message-ID: <aWa-KVC8CVvn8GGs@um790> (raw)
In-Reply-To: <20260113-io-pgtable-v5-1-7ed771bc3d8d@google.com>
On Tue, Jan 13, 2026 at 08:49:27AM +0000, Alice Ryhl wrote:
> From: Asahi Lina <lina+kernel@asahilina.net>
>
> This will be used by the Tyr driver to create and modify the page table
> of each address space on the GPU. Each time a mapping gets created or
> removed by userspace, Tyr will call into GPUVM, which will figure out
> which calls to map_pages and unmap_pages are required to map the data in
> question in the page table so that the GPU may access those pages when
> using that address space.
>
> The Rust type wraps the struct using a raw pointer rather than the usual
> Opaque+ARef approach because Opaque+ARef requires the target type to be
> refcounted.
>
> Signed-off-by: Asahi Lina <lina+kernel@asahilina.net>
> Acked-by: Boris Brezillon <boris.brezillon@collabora.com>
> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
> Co-developed-by: Alice Ryhl <aliceryhl@google.com>
> Signed-off-by: Alice Ryhl <aliceryhl@google.com>
> ---
>
As part of the wip for booting Tyr firmware, I have been using this
io_pgtable abstraction including v5.
Built and tested on arm64 with rustc 1.91.0 and bindgen 0.72.1.
Tested-by: Deborah Brouwer <deborah.brouwer@collabora.com>
prev parent reply other threads:[~2026-01-13 21:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-13 8:49 Alice Ryhl
2026-01-13 9:25 ` Danilo Krummrich
2026-01-13 21:50 ` Deborah Brouwer [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=aWa-KVC8CVvn8GGs@um790 \
--to=deborah.brouwer@collabora.com \
--cc=Liam.Howlett@oracle.com \
--cc=a.hindborg@kernel.org \
--cc=aliceryhl@google.com \
--cc=bjorn3_gh@protonmail.com \
--cc=boqun.feng@gmail.com \
--cc=boris.brezillon@collabora.com \
--cc=dakr@kernel.org \
--cc=daniel.almeida@collabora.com \
--cc=gary@garyguo.net \
--cc=iommu@lists.linux.dev \
--cc=jgg@ziepe.ca \
--cc=joro@8bytes.org \
--cc=lina+kernel@asahilina.net \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=lossin@kernel.org \
--cc=ojeda@kernel.org \
--cc=robin.murphy@arm.com \
--cc=rust-for-linux@vger.kernel.org \
--cc=tmgross@umich.edu \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox