linux-kernel - Re: [PATCH v15 09/11] rust: dma: use `dma::Device` in `CoherentAllocation`

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Message-ID: <87bjr5588f.fsf@kernel.org>
Date: Tue, 03 Jun 2025 14:18:24 +0200
From: Andreas Hindborg <a.hindborg@...nel.org>
To: "Abdiel Janulgue" <abdiel.janulgue@...il.com>
Cc: <rust-for-linux@...r.kernel.org>,  <daniel.almeida@...labora.com>,
  <dakr@...nel.org>,  <robin.murphy@....com>,  <aliceryhl@...gle.com>,
  "Miguel Ojeda" <ojeda@...nel.org>,  "Alex Gaynor"
 <alex.gaynor@...il.com>,  "Boqun Feng" <boqun.feng@...il.com>,  "Gary Guo"
 <gary@...yguo.net>,  Björn Roy Baron
 <bjorn3_gh@...tonmail.com>,  "Benno
 Lossin" <benno.lossin@...ton.me>,  "Trevor Gross" <tmgross@...ch.edu>,
  "Valentin Obst" <kernel@...entinobst.de>,
  <linux-kernel@...r.kernel.org>,  "Christoph Hellwig" <hch@....de>,
  "Marek Szyprowski" <m.szyprowski@...sung.com>,  <airlied@...hat.com>,
  <iommu@...ts.linux.dev>
Subject: Re: [PATCH v15 09/11] rust: dma: use `dma::Device` in
 `CoherentAllocation`

Hi Abdiel,

"Abdiel Janulgue" <abdiel.janulgue@...il.com> writes:

> From: Danilo Krummrich <dakr@...nel.org>
>
> Require a `&dyn dma::Device` in `CoherentAllocation`, such that DMA
> memory can only be allocated with devices on potentially DMA capable
> busses.
>
> Signed-off-by: Danilo Krummrich <dakr@...nel.org>
> Signed-off-by: Abdiel Janulgue <abdiel.janulgue@...il.com>

Did you see my comment on v14 [1]?

Best regards,
Andreas Hindborg


[1] https://lore.kernel.org/lkml/87y0x2igjz.fsf@kernel.org/