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Mon, 8 Jul 2024 05:01:27 -0700 From: Dragos Tatulea Date: Mon, 8 Jul 2024 15:00:32 +0300 Subject: [PATCH vhost v3 08/24] vdpa/mlx5: Clear and reinitialize software VQ data on reset Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20240708-stage-vdpa-vq-precreate-v3-8-afe3c766e393@nvidia.com> References: <20240708-stage-vdpa-vq-precreate-v3-0-afe3c766e393@nvidia.com> In-Reply-To: <20240708-stage-vdpa-vq-precreate-v3-0-afe3c766e393@nvidia.com> To: "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Saeed Mahameed , Leon Romanovsky , Tariq Toukan , Si-Wei Liu CC: , , , , Cosmin Ratiu , Dragos Tatulea X-Mailer: b4 0.13.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF0001AB73:EE_|DS0PR12MB8368:EE_ X-MS-Office365-Filtering-Correlation-Id: d98d9366-b098-4650-649a-08dc9f45c055 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|376014|7416014|36860700013; X-Microsoft-Antispam-Message-Info: =?utf-8?q?H/di6i53ieVbfnY9xDwMmdTF86kW/mm?= =?utf-8?q?JCxl/Ou48kZquj8yJrTubPS5fNeWiLeEEAW4UolY2dyttxW/HL0AtqhZXG78ZEpYo?= =?utf-8?q?mmApYvqKAMzPoVipuk820C+u4UZxj4bScQLAqvkwCsRsGfhVNNUQPocJImvGKB6jk?= =?utf-8?q?DH3PDKOVIiBQRMssCUJKcrMn7EQi6Urha2drAJ93ZNmBMwiJdXfhi/tXetidHiOQZ?= =?utf-8?q?Rz1HswyodZ2+l1IIyEwjtPfWG4TDbn3BdJCYImk/SEHflh/2+ciVK/NBEO7Qt5Xk4?= =?utf-8?q?oel7dh1cPzY+xxtMBkE6PUlrlheB5WGx6ORRehnP0spFC+UPtKuR4Tt+McQ2UTaXo?= =?utf-8?q?fZk8LLDObjXxcOeWsMsQIhy8YdZDMW1WQUNGpyGtJv/s8wLksbEtnW0domjxoNlGi?= =?utf-8?q?S8L/9HVqtwf263xUiLUHGykaChL3hROPGIpeCGtTY49YCQWK9kwdO4xMBxextlnvg?= =?utf-8?q?PssibWcJNli2PpG6f1gxxZhHhenU85/qdXue0C4udiyPIBRTroXTyxfeSvCDXUkNA?= =?utf-8?q?HcakM7rMJh8emaIQAhqYkWlQ2LNs3YnSmiCjDa1APLIyaMN9K5llKq0b6euN40wcF?= =?utf-8?q?OcZNVfEYBZERHPdmIXffG/7FBeK7L0xbfq407TLvxXDKUbVqF/PgF+0BtK8UIq/+/?= =?utf-8?q?B865gMRKPw7O0+DxOHJwDYPiktXE/KC1Mynnyf9YRk4tFsPz5+CyyrXYuzHlAWsi0?= =?utf-8?q?f/pXuI6PYunhiEeVBfmtB70dgECVqKfRAEj9vn2eq5Q3GsOuvotGBnQE2LeeVidh5?= =?utf-8?q?wHqgdVXUjp63nzez9c8uxGYCRZL5VusFmPu9usX7QBVpS/NBRQynXofOksR/QYaKK?= =?utf-8?q?HVoZZSBu+tF/99uaoOWYGR4JBwfVg9FV7QJO5DfQ85f9Im7wWKZybY7Fzy/KBa9gm?= =?utf-8?q?gQlf/7yzb3U6z2ta1mzsutPXzL+dmC44QpulkoknsSmeWhCuTTlkToYUkuLnH5E3y?= =?utf-8?q?6tlBcrOzZ4lf5DYeYnlQuvZxVMTFIAGzHhQVafPlrXCzzfeMOuLKTebfnJA2Vlr5m?= =?utf-8?q?WFSWEpw7kpuUtf6AXWVBhJ5FYtO2q4mXDdKZUYnLfcXi1OjWvarVTCII83/tQmn2C?= =?utf-8?q?O/yw0M58l8jx51vIhaDQYSbsYgs5l0zslbiohgGXzz82S2BLgZBD7mwy1pEK6gvpZ?= =?utf-8?q?RBBpCtw5KeW/ZDckyv4X67EOV8te+PAb1emsDA8mcnko0JJESbJMN9BLMYbIFURSo?= =?utf-8?q?Paam90sFUvTEfh0LJAbqBcKcxQQYjQ57TGx7hQtO0jsnCvSIvFgL92Z6uXOU5PSV6?= =?utf-8?q?2Lx/0/OzWF6rikLB76HtqVplbCDSGGL8lIhGP7yZNLt6KPE1V9CvijdXQ2IflX+lh?= =?utf-8?q?fUpOFxqpyZDlQ77YzTSE5NOFa70hGgsFNlaSpH6r+XufqvAC0fmfuRHXhwZTi1Ba+?= =?utf-8?q?upsNniPGam+?= 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)(82310400026)(1800799024)(376014)(7416014)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jul 2024 12:01:50.6899 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d98d9366-b098-4650-649a-08dc9f45c055 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: BL6PEPF0001AB73.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB8368 The hardware VQ configuration is mirrored by data in struct mlx5_vdpa_virtqueue . Instead of clearing just a few fields at reset, fully clear the struct and initialize with the appropriate default values. As clear_vqs_ready() is used only during reset, get rid of it. Reviewed-by: Cosmin Ratiu Acked-by: Eugenio Pérez Signed-off-by: Dragos Tatulea --- drivers/vdpa/mlx5/net/mlx5_vnet.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c index c8b5c87f001d..de013b5a2815 100644 --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c @@ -2941,18 +2941,6 @@ static void teardown_vq_resources(struct mlx5_vdpa_net *ndev) ndev->setup = false; } -static void clear_vqs_ready(struct mlx5_vdpa_net *ndev) -{ - int i; - - for (i = 0; i < ndev->mvdev.max_vqs; i++) { - ndev->vqs[i].ready = false; - ndev->vqs[i].modified_fields = 0; - } - - ndev->mvdev.cvq.ready = false; -} - static int setup_cvq_vring(struct mlx5_vdpa_dev *mvdev) { struct mlx5_control_vq *cvq = &mvdev->cvq; @@ -3035,12 +3023,14 @@ static int mlx5_vdpa_compat_reset(struct vdpa_device *vdev, u32 flags) down_write(&ndev->reslock); unregister_link_notifier(ndev); teardown_vq_resources(ndev); - clear_vqs_ready(ndev); + init_mvqs(ndev); + if (flags & VDPA_RESET_F_CLEAN_MAP) mlx5_vdpa_destroy_mr_resources(&ndev->mvdev); ndev->mvdev.status = 0; ndev->mvdev.suspended = false; ndev->cur_num_vqs = MLX5V_DEFAULT_VQ_COUNT; + ndev->mvdev.cvq.ready = false; ndev->mvdev.cvq.received_desc = 0; ndev->mvdev.cvq.completed_desc = 0; memset(ndev->event_cbs, 0, sizeof(*ndev->event_cbs) * (mvdev->max_vqs + 1));