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Thu, 27 Aug 2026 05:18:44 -0700 From: Zhi Wang To: , , CC: , , , , , , , , , , , , , , , , , , , , , , , Zhi Wang , , , , Subject: [PATCH v9 0/1] Rust PCI capability infrastructure and SR-IOV support Date: Thu, 27 Aug 2026 15:18:39 +0300 Message-ID: X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF000044A5:EE_|DM4PR12MB5794:EE_ X-MS-Office365-Filtering-Correlation-Id: 2a2877d4-1f4f-4a06-0e00-08df04356953 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|82310400026|36860700016|1800799024|23010399003|13003099007|10067099003|56012099006|11063799006|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(7416014)(376014)(82310400026)(36860700016)(1800799024)(23010399003)(13003099007)(10067099003)(56012099006)(11063799006)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: /3Qiap0OjZY4bqhAoAmBKTbBabLIAiAMUAB52I+0W3gLmVOIBCM62L0dwjK47VQs49V90M72phYJt2tO4bkBIHAEDdrkGTIhdXWS8j+XlhvYbY27R5W+rS7lVjdoVc1V51Wo/hQuWcfc7MXmrFw6nnCjCFLF6Em9xvcZ40SkC8R1UMcbcCxvhzheqXgm4AppYRzU7WCJD21bQo02VrvaMGoAfW3V4AuNIef++zSsprGHDTIMzr17RF+8pQlvg2CKVAL3MA3T64X3gkW0tukZdYUWwwXZDM22YiXbkV9ZjfQqHZLUbOlrbI62PSHoopAOcTqUURo22qFD4SYAsI1oiwr2L5cu80A7ffhemfMS/l9SYo6BCmu+BUTUlMuxxhXs8RR0i4QXGcIjsJGfe/qOghSTB+Yrh8UirKbJyFoCYbLPba9diKbNNkND4XHWMwCc X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Aug 2026 12:19:15.4795 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2a2877d4-1f4f-4a06-0e00-08df04356953 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF000044A5.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5794 This is a follow-up to v8 [1]. The patch adds typed PCIe extended-capability lookup to the Rust PCI abstraction and an SR-IOV layout used by the nova-core vGPU boot work. This series is based on current mainline. That base provides the existing num::casts helpers but not const_as!, so the const narrowing call uses the temporary turbofish form discussed during review. It can be converted as part of the subsequent const_as! migration before the old helper is removed. Changes since v8: - Made all raw ExtSriovRegs fields private. (Danilo) - Added a read-only first_vf_offset() accessor for the GSP ABI and documented why pci_iov_virtfn_devfn() cannot replace it. (Danilo, Zhi) - Simplified VF BAR decoding using a slot iterator and removed ExtSriovVfBars. (Alexandre, Danilo) - Explained why I/O-space VF BAR encodings are rejected. (Alexandre) - Clarified that decoded BAR addresses are PCI bus addresses. (Zhi) - Removed unused ExtCapId::new() and kept as_raw() private. (Danilo) - Replaced documented integer casts with the num::casts helpers available in current mainline. (Alexandre) - Rebased onto current mainline. [1] https://lore.kernel.org/rust-for-linux/20260818084633.1673214-1-zhiw@nvidia.com/ Zhi Wang (1): rust: pci: add extended capability and SR-IOV support rust/helpers/pci.c | 5 + rust/kernel/pci.rs | 8 ++ rust/kernel/pci/cap.rs | 290 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 303 insertions(+) create mode 100644 rust/kernel/pci/cap.rs base-commit: 45c13f3f9e3bb15fd89ff2864c6f627a3b4b4229 -- 2.53.0