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Fri, 20 Dec 2024 04:04:22 -0600 From: Honglei Huang To: Huang Rui , , , Dmitry Osipenko , , David Airlie , "Gerd Hoffmann" , Gurchetan Singh , Chia-I Wu , Daniel Vetter , Akihiko Odaki CC: Lingshan Zhu , Demi Marie Obenour , Honglei Huang Subject: [RFC PATCH 1/3] virtio-gpu api: add blob userptr resource Date: Fri, 20 Dec 2024 18:04:07 +0800 Message-ID: <20241220100409.4007346-1-honglei1.huang@amd.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0F9:EE_|BY5PR12MB4307:EE_ X-MS-Office365-Filtering-Correlation-Id: 1d9f759d-acd5-4652-9bb4-08dd20ddaf9a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|82310400026|36860700013|921020; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Dec 2024 10:04:26.1859 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1d9f759d-acd5-4652-9bb4-08dd20ddaf9a X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0F9.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB4307 From: Honglei Huang Add a new resource for blob resource, called userptr, used for let host access guest user space memory, to acquire a simple SVM features in virtio GPU. - The capset VIRTIO_GPU_CAPSET_HSAKMT used for context init, in this series patches only HSAKMT context can use the userptr feature. HSAKMT is a GPU compute library in HSA stack, like the role libdrm in mesa stack. - New flag VIRTIO_GPU_BLOB_FLAG_USE_USERPTR used in blob create to indicate the blob create ioctl is used for create a userptr blob resource. Signed-off-by: Honglei Huang --- include/uapi/linux/virtio_gpu.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gpu.h index b9a9783f0b14..0a6b56acbc13 100644 --- a/include/uapi/linux/virtio_gpu.h +++ b/include/uapi/linux/virtio_gpu.h @@ -323,6 +323,7 @@ struct virtio_gpu_cmd_submit { #define VIRTIO_GPU_CAPSET_VIRGL 1 #define VIRTIO_GPU_CAPSET_VIRGL2 2 +#define VIRTIO_GPU_CAPSET_HSAKMT 7 /* VIRTIO_GPU_CMD_GET_CAPSET_INFO */ struct virtio_gpu_get_capset_info { @@ -415,6 +416,7 @@ struct virtio_gpu_resource_create_blob { #define VIRTIO_GPU_BLOB_FLAG_USE_MAPPABLE 0x0001 #define VIRTIO_GPU_BLOB_FLAG_USE_SHAREABLE 0x0002 #define VIRTIO_GPU_BLOB_FLAG_USE_CROSS_DEVICE 0x0004 +#define VIRTIO_GPU_BLOB_FLAG_USE_USERPTR 0x0008 /* zero is invalid blob mem */ __le32 blob_mem; __le32 blob_flags; -- 2.34.1