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GET /api/patches/2225773/?format=api
{ "id": 2225773, "url": "http://patchwork.ozlabs.org/api/patches/2225773/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260421-io_projection-v2-4-4c251c692ef4@garyguo.net/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260421-io_projection-v2-4-4c251c692ef4@garyguo.net>", "list_archive_url": null, "date": "2026-04-21T14:56:15", "name": "[v2,04/11] rust: io: add missing safety requirement in `IoCapable` methods", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ebf4fe468b9f15e790beda5caa48c1c618889a75", "submitter": { "id": 76823, "url": "http://patchwork.ozlabs.org/api/people/76823/?format=api", "name": "Gary Guo", "email": "gary@garyguo.net" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260421-io_projection-v2-4-4c251c692ef4@garyguo.net/mbox/", "series": [ { "id": 500833, "url": "http://patchwork.ozlabs.org/api/series/500833/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=500833", "date": "2026-04-21T14:56:19", "name": "rust: I/O type generalization and projection", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/500833/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225773/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225773/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-52844-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=garyguo.net header.i=@garyguo.net header.a=rsa-sha256\n header.s=selector1 header.b=vQPuSpRS;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c15:e001:75::12fc:5321; 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Wysocki\" <rafael@kernel.org>, Danilo Krummrich <dakr@kernel.org>,\n Miguel Ojeda <ojeda@kernel.org>, Boqun Feng <boqun@kernel.org>,\n Gary Guo <gary@garyguo.net>,\n =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= <bjorn3_gh@protonmail.com>,\n Benno Lossin <lossin@kernel.org>, Andreas Hindborg <a.hindborg@kernel.org>,\n Alice Ryhl <aliceryhl@google.com>, Trevor Gross <tmgross@umich.edu>,\n Daniel Almeida <daniel.almeida@collabora.com>,\n Bjorn Helgaas <bhelgaas@google.com>,\n =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= <kwilczynski@kernel.org>,\n Abdiel Janulgue <abdiel.janulgue@gmail.com>,\n Robin Murphy <robin.murphy@arm.com>,\n Alexandre Courbot <acourbot@nvidia.com>, David Airlie <airlied@gmail.com>,\n Simona Vetter <simona@ffwll.ch>", "Cc": "driver-core@lists.linux.dev, rust-for-linux@vger.kernel.org,\n linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,\n nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org", "X-Mailer": "b4 0.15.1", "X-Developer-Signature": "v=1; a=ed25519-sha256; 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"X-OriginatorOrg": "garyguo.net", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 5da74dcf-26b1-4093-b139-08de9fb62adc", "X-MS-Exchange-CrossTenant-AuthSource": "LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "21 Apr 2026 14:56:28.6164\n (UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "bbc898ad-b10f-4e10-8552-d9377b823d45", "X-MS-Exchange-CrossTenant-MailboxType": "HOSTED", "X-MS-Exchange-CrossTenant-UserPrincipalName": "\n gLXfx8rZGrWT0EWSYtOynl1DHW37qRUxvgjE/i46PJW8T4le/tpK2mJrushn6xQM+xjyhIFXWjllTkEMREJReg==", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "CWLP265MB5523" }, "content": "The current safety comment on `io_read`/`io_write` does not cover the topic\nabout alignment, although this is guaranteed by checks in `Io`. Add it so\nit can be relied on by implementor of `IoCapable`.\n\nSigned-off-by: Gary Guo <gary@garyguo.net>\n---\n rust/kernel/io.rs | 6 ++++--\n 1 file changed, 4 insertions(+), 2 deletions(-)", "diff": "diff --git a/rust/kernel/io.rs b/rust/kernel/io.rs\nindex 1682f2a0d20d..c6d30c5b4e10 100644\n--- a/rust/kernel/io.rs\n+++ b/rust/kernel/io.rs\n@@ -216,14 +216,16 @@ pub trait IoCapable<T> {\n ///\n /// # Safety\n ///\n- /// The range `[address..address + size_of::<T>()]` must be within the bounds of `Self`.\n+ /// - The range `[address..address + size_of::<T>()]` must be within the bounds of `Self`.\n+ /// - `address` must be aligned.\n unsafe fn io_read(&self, address: *mut T) -> T;\n \n /// Performs an I/O write of `value` at `address`.\n ///\n /// # Safety\n ///\n- /// The range `[address..address + size_of::<T>()]` must be within the bounds of `Self`.\n+ /// - The range `[address..address + size_of::<T>()]` must be within the bounds of `Self`.\n+ /// - `address` must be aligned.\n unsafe fn io_write(&self, value: T, address: *mut T);\n }\n \n", "prefixes": [ "v2", "04/11" ] }