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Date: Fri, 7 Mar 2025 12:12:41 +0100
From: Danilo Krummrich <dakr@kernel.org>
To: Abdiel Janulgue <abdiel.janulgue@gmail.com>
Cc: rust-for-linux@vger.kernel.org, daniel.almeida@collabora.com,
	robin.murphy@arm.com, aliceryhl@google.com,
	Miguel Ojeda <ojeda@kernel.org>,
	Alex Gaynor <alex.gaynor@gmail.com>,
	Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>,
	=?iso-8859-1?Q?Bj=F6rn?= Roy Baron <bjorn3_gh@protonmail.com>,
	Benno Lossin <benno.lossin@proton.me>,
	Andreas Hindborg <a.hindborg@kernel.org>,
	Trevor Gross <tmgross@umich.edu>,
	Valentin Obst <kernel@valentinobst.de>,
	open list <linux-kernel@vger.kernel.org>,
	Christoph Hellwig <hch@lst.de>,
	Marek Szyprowski <m.szyprowski@samsung.com>, airlied@redhat.com,
	"open list:DMA MAPPING HELPERS" <iommu@lists.linux.dev>
Subject: Re: [PATCH v13 0/7] rust: add dma coherent allocator abstraction
Message-ID: <Z8rUqc1N2K37Xkzf@cassiopeiae>
References: <20250307110821.1703422-1-abdiel.janulgue@gmail.com>
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In-Reply-To: <20250307110821.1703422-1-abdiel.janulgue@gmail.com>

On Fri, Mar 07, 2025 at 01:06:17PM +0200, Abdiel Janulgue wrote:
> This series adds the rust bindings for the dma coherent allocator which
> is needed for nova-core[0]. For v13, the biggest change is to move out
> the as_slice and write helpers for later discussion. The object is also
> now wrapped in Devres to explicitly tie it to the lifetime of the
> device[1].

Just to clarify:

What is meant here is that a CoherentAllocation can't out-live driver unbind.
This is not equivalent to the lifetime of the corresponding struct device.