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Wed, 30 Sep 2026 07:36:59 -0700 From: Simon Song To: , CC: , , , , , , , , , , , , , , , , , , , Simon Song Subject: [PATCH v2 0/1] vfio/pci: Give drivers control of PCI driver_data Date: Wed, 30 Sep 2026 07:36:40 -0700 Message-ID: <20260930143641.4160785-1-xinmengs@nvidia.com> X-Mailer: git-send-email 2.43.7 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: rnnvmail202.nvidia.com (10.129.68.7) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN3PEPF00022BC2:EE_|PH7PR12MB7305:EE_ X-MS-Office365-Filtering-Correlation-Id: 8a630f6d-300f-4773-16e2-08df1f005aa9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|23010399003|376014|36860700016|82310400026|10067099003|11063799006|56012099006|6133799003|18002099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: tv8WlCmgpVqb+uJzITOT43kIa7K6/2ptVkdnZb7HiqmwSfIokzXfpwb96XTkckuP5MNXTBHxDk8EwETn+TLgKd+gfyaYZ+DswZHROcVfeaZaXj9YEE/dCtgPf9INUHUvgXSPRNqbXVkAaWfVf/Agsh0Emsps/gfFewqsfjOqDpWclOtQEAuK0H3oVFX0LJKobNDBnVZ7Z+oSmcKk/RCWDbNue3Hvajd/I2be/kmYk+dpP14DNtegCIt4UlFzyeVwU5aOlAmPU48uZ5zhKztkJ8jbIBnyiasYiLLyfy732mLTOF39hmBxer9I107S0wk2rq8EgrDTt4nfTE4RDN1IuonFsM9S/418/oEMdrPp7/03wEbb4T3Zg82hQMDVttK12jb/+qCLBu2O3AQsvVtADw3JUV0jz9wFWBo61tEULr3qgIOGDZNvhsC92x6v7lAP X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Sep 2026 14:37:28.9449 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8a630f6d-300f-4773-16e2-08df1f005aa9 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN3PEPF00022BC2.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7305 Hi All, During the discussion of the proposed Rust NVIDIA vGPU VFIO variant driver [1], Danilo mentioned that vfio-pci-core requires pci driver_data to point to vfio_pci_core_device, this conflicts with driver data managed by proposed nvidia vfio variant driver. This patch moves the responsibility for interpreting driver_data to the pci driver, the vfio core functions (PM, AER, VGA) takes an explicit vfio_pci_core_device pointer and no longer depend on pci driver_data VFIO_PCI_CORE_DEFINE_CALLBACK marcos generate the wrappers for existing vfio variant drivers, each driver also assigns its own PM ops table to replace the operation done by vfio-pci-core during registration. For VGA, drivers provide its decode callback to vfio_pci_core_register_device, VGA setup/teardown remains inside vfio core registration/unregistration, this preserves vga initialize sequence and also remove the core dependacy on driver data. [1] https://lore.kernel.org/all/DLFD2ZDSK9YQ.3A4R66G8UJMD8@kernel.org/ Simon Song (1): vfio/pci: Remove the core dependency on driver data .../vfio/pci/hisilicon/hisi_acc_vfio_pci.c | 27 ++++----- drivers/vfio/pci/ism/main.c | 19 +++--- drivers/vfio/pci/mlx5/main.c | 13 ++-- drivers/vfio/pci/nvgrace-gpu/main.c | 19 +++--- drivers/vfio/pci/pds/pci_drv.c | 8 ++- drivers/vfio/pci/pds/vfio_dev.c | 5 +- drivers/vfio/pci/qat/main.c | 12 ++-- drivers/vfio/pci/vfio_pci.c | 33 +++++++++- drivers/vfio/pci/vfio_pci_core.c | 60 +++++++------------ drivers/vfio/pci/virtio/main.c | 8 ++- drivers/vfio/pci/xe/main.c | 8 ++- include/linux/vfio_pci_core.h | 42 ++++++++++++- 12 files changed, 160 insertions(+), 94 deletions(-) -- 2.43.7