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Mon, 21 Oct 2024 17:20:32 -0700 From: Nicolin Chen To: , , CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH v4 04/14] iommu/viommu: Add cache_invalidate to iommufd_viommu_ops Date: Mon, 21 Oct 2024 17:20:13 -0700 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A101:EE_|SN7PR12MB7836:EE_ X-MS-Office365-Filtering-Correlation-Id: 12973697-3588-41c1-3f97-08dcf22f61c6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700013|376014|7416014|82310400026|1800799024; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc6edge1.nvidia.com; CAT:NONE; SFS:(13230040)(36860700013)(376014)(7416014)(82310400026)(1800799024); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Oct 2024 00:20:49.5503 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 12973697-3588-41c1-3f97-08dcf22f61c6 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: BL02EPF0001A101.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7836 This per-vIOMMU cache_invalidate op is like the cache_invalidate_user op in struct iommu_domain_ops, but wider, supporting device cache (e.g. PCI ATC invaldiations). Reviewed-by: Jason Gunthorpe Signed-off-by: Nicolin Chen --- include/linux/iommufd.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/iommufd.h b/include/linux/iommufd.h index 821816e3b1fd..559f274a26ea 100644 --- a/include/linux/iommufd.h +++ b/include/linux/iommufd.h @@ -15,6 +15,7 @@ struct device; struct file; struct iommu_group; struct iommu_user_data; +struct iommu_user_data_array; struct iommufd_access; struct iommufd_ctx; struct iommufd_device; @@ -121,6 +122,13 @@ struct iommufd_vdevice { * @vdevice_free: Free a driver-managed iommufd_vdevice to de-init its structure * or HW procedure. The memory of the vdevice will be free-ed by * iommufd core. + * @cache_invalidate: Flush hardware cache used by a vIOMMU. It can be used for + * any IOMMU hardware specific cache: TLB and device cache. + * The @array passes in the cache invalidation requests, in + * form of a driver data structure. A driver must update the + * array->entry_num to report the number of handled requests. + * The data structure of the array entry must be defined in + * include/uapi/linux/iommufd.h */ struct iommufd_viommu_ops { void (*free)(struct iommufd_viommu *viommu); @@ -130,6 +138,8 @@ struct iommufd_viommu_ops { struct iommufd_vdevice *(*vdevice_alloc)(struct iommufd_viommu *viommu, struct device *dev, u64 id); void (*vdevice_free)(struct iommufd_vdevice *vdev); + int (*cache_invalidate)(struct iommufd_viommu *viommu, + struct iommu_user_data_array *array); }; #if IS_ENABLED(CONFIG_IOMMUFD)