From: Danilo Krummrich <dakr@kernel.org>
To: Tamir Duberstein <tamird@gmail.com>
Cc: "Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <benno.lossin@proton.me>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
"Matthew Wilcox" <willy@infradead.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
"FUJITA Tomonori" <fujita.tomonori@gmail.com>,
"Rob Herring (Arm)" <robh@kernel.org>,
"Maíra Canal" <mcanal@igalia.com>,
"Asahi Lina" <lina@asahilina.net>,
rust-for-linux@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org
Subject: Re: [PATCH v17 1/3] rust: types: add `ForeignOwnable::PointedTo`
Date: Tue, 18 Feb 2025 16:24:33 +0100 [thread overview]
Message-ID: <Z7SmMdl5Hl_CRAzs@pollux> (raw)
In-Reply-To: <20250218-rust-xarray-bindings-v17-1-f3a99196e538@gmail.com>
On Tue, Feb 18, 2025 at 09:37:43AM -0500, Tamir Duberstein wrote:
> Allow implementors to specify the foreign pointer type; this exposes
> information about the pointed-to type such as its alignment.
>
> This requires the trait to be `unsafe` since it is now possible for
> implementors to break soundness by returning a misaligned pointer.
>
> Encoding the pointer type in the trait (and avoiding pointer casts)
> allows the compiler to check that implementors return the correct
> pointer type. This is preferable to directly encoding the alignment in
> the trait using a constant as the compiler would be unable to check it.
>
> Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
next prev parent reply other threads:[~2025-02-18 15:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-18 14:37 [PATCH v17 0/3] rust: xarray: Add a minimal abstraction for XArray Tamir Duberstein
2025-02-18 14:37 ` [PATCH v17 1/3] rust: types: add `ForeignOwnable::PointedTo` Tamir Duberstein
2025-02-18 15:24 ` Danilo Krummrich [this message]
2025-02-18 14:37 ` [PATCH v17 2/3] rust: xarray: Add an abstraction for XArray Tamir Duberstein
2025-02-21 16:14 ` Danilo Krummrich
2025-02-21 17:32 ` Tamir Duberstein
2025-02-18 14:37 ` [PATCH v17 3/3] MAINTAINERS: add entry for Rust XArray API Tamir Duberstein
2025-02-18 15:21 ` [PATCH v17 0/3] rust: xarray: Add a minimal abstraction for XArray Danilo Krummrich
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