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Wed, 26 Jun 2024 03:27:16 -0700 From: Dragos Tatulea Date: Wed, 26 Jun 2024 13:26:44 +0300 Subject: [PATCH vhost v2 08/24] vdpa/mlx5: Clear and reinitialize software VQ data on reset Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-ID: <20240626-stage-vdpa-vq-precreate-v2-8-560c491078df@nvidia.com> References: <20240626-stage-vdpa-vq-precreate-v2-0-560c491078df@nvidia.com> In-Reply-To: <20240626-stage-vdpa-vq-precreate-v2-0-560c491078df@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: SJ5PEPF000001CE:EE_|CH3PR12MB9099:EE_ X-MS-Office365-Filtering-Correlation-Id: b2199088-bf62-4827-23c7-08dc95ca99d4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230038|36860700011|376012|7416012|1800799022|82310400024; X-Microsoft-Antispam-Message-Info: =?utf-8?B?WVhRY2IwN1NWeGV0SXFNZ2hnbjVNcGpyZXdGcG5hRkphbFQzRFJiR1hpdWdD?= =?utf-8?B?NXNHcG51NXJRM1hzTkt5NjVRNmU3RE1KK2FHamRhelZpK3RGeUJWUGtiLys2?= =?utf-8?B?UHZPOURMS0l1K2lwV25FL1BPNUJ3VGhFaUdzbVh1YlVERjZLZExJU3RXVnU0?= =?utf-8?B?YXpDV1I0aE1oZ1Q1K1JaSzRmdFVlK2wyKzJULzdhY05RdkMrZ3Rzai8yRWpD?= =?utf-8?B?dnVBN1kwT3FHQXFaNTVDQ2ZkcjRORFRlV0plWmxqTXZpYXFsemQrVFFMWHdK?= =?utf-8?B?MzRzNWtQdXF1OG52THN3eUJsOUQ5ano5V1NuTVFwYTlOcEhQTXFxUmxxVUJm?= =?utf-8?B?M29pbFB2Wm1yUHJUMXIzd09UenJ3UUpJTHQ2U1dlSFI2ZTVZenY4TzE2OGtj?= =?utf-8?B?WFZ6RWk1SzIwWm1PM3h1bHAwTDdYWnp0d1YrOHFZeHJOWlBqQ29wcUJ6WXhY?= =?utf-8?B?dXBnRW9hWndZTTlHbVNmZWpxQy9oN3hvRll5MzIyV0t1aUp0cnZNZmtTbWNW?= =?utf-8?B?Y3JETnZwNWNDd0ZXK0NSMjZZeGNDWTQ1ZnU1L1FvMExoREFrQUx0a1VmQ0cr?= =?utf-8?B?MnY2dEhhYmgzZVVidmNPYUsrd05raWhBZFR6NGxpZ1RhRElWYTdlZW5aSU5G?= =?utf-8?B?eE9Uc2ZJMW5uR3JNMXI0RW9mLzdJQytoaWZjZ3V6eFdrWXI3bW11RERRaVJX?= =?utf-8?B?VS92cHFhTlBOWlVYRU8ySjhvcktBNVNndEp2NllIekw0eVFUTTFMMnpVSkRM?= =?utf-8?B?SFVXKzNscU1kQmlUdTdFZytKVUkzMzZPZ0JqWG9vMW5vWFl2UTV2QmFVQnZE?= =?utf-8?B?Q2NzMzRFS0orL0FlbXh3dHBlZ0JPL05BWGJvWXpoemgyWWJDRGhGVXdMWmc2?= =?utf-8?B?ZGdGMW9SL08zSFlWOEdZQUk3UWI4MGNHcUZPOS9peFJObjFXeG1BSExtZkts?= =?utf-8?B?UVZ5dEpNREF2MnYrZm9JZXZDZmdXN24vWS9VTEdvVEVFMG8vQ0orcHRZT2tB?= =?utf-8?B?TE4zY1hLYXlCbDV4eCsxUGJOeEZrMDBtTy9xbjdkQ3lTL0NRM1M3TUx6aTBm?= =?utf-8?B?NEFudFR1Y1NBNXRidVZGSU9CM3Y5cXFCbHA2YmJaRk55TlF4QjBkTFh3Zm1I?= =?utf-8?B?ZlJBMHN3S0FSMWRQQ0hEUGFnNVlBRUVWWXg0MW8zNysva1FWc1JySWtRSGNK?= =?utf-8?B?SHA5bnFKeHpzNWhsbENNNXJDTnc0WjdRUVRvaERMUWp1aHNSOTczUjNSK2Iy?= =?utf-8?B?NHZ6dEU4dUZyWFZJOEU5aXRTOFVDNVRzV1dnbXcvTXRHWk90RkJwQ2pBeDZm?= =?utf-8?B?b1VaMmFrb0h1aTQ3MkFqODE1RkFxZDF0SzkrbDN5Q2J6eFhybmc1UU5IY0tr?= =?utf-8?B?elEveTJmR2pJdzRpcnVJUkZ3dlhYK05VMnFzMzlTdFdZWXV2azY0QVlCU0lF?= =?utf-8?B?dTV1ZjQwUnIzKy9DVmI4dXZqYzhGaEZ2blZOZUpiZVZQekxLVDZudFlhaWVO?= =?utf-8?B?M01tdXdkVTRuYzZhL3lGNFhJRTZoVVU4Z0o4WS9zYUdmaUZNSUVUTlVrQS9w?= =?utf-8?B?T3BHMFJ4d2xHWDI1OVZUQWp4TFJnSThMK3FHb0xINTgzeGFDVDBlcXVVcCs3?= =?utf-8?B?Y3BrU1ExbFY5TzhsRkV2R2xxQTBIUThyejF1RGVmNm5hNUlxVU0raysxK1Vp?= =?utf-8?B?OUJMQzJ3SktJL3ZUTVR3WnpHbS9yeHd5NUhWaGZRYnZDVmJjdUUxQnp3WURa?= =?utf-8?B?a0VtQjl3WmhYby9pcDFjdnY3SDdZOXFxYkNUMTNsemdkclFEays3VUZFdk14?= =?utf-8?B?WG9CVGtIaEJzMDZTR2lMNnFwSjV3enVuU0lSazY1UHhHcGRkbnFBOUcyUnF6?= =?utf-8?B?NXpCUjE2QVJHYyttMG1rY0FjV1hUQktQaXpWR0xyYTlIMmc9PQ==?= 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:(13230038)(36860700011)(376012)(7416012)(1800799022)(82310400024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Jun 2024 10:27:37.5267 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b2199088-bf62-4827-23c7-08dc95ca99d4 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: SJ5PEPF000001CE.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB9099 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 P=C3=A9rez 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_n= et *ndev) ndev->setup =3D false; } =20 -static void clear_vqs_ready(struct mlx5_vdpa_net *ndev) -{ - int i; - - for (i =3D 0; i < ndev->mvdev.max_vqs; i++) { - ndev->vqs[i].ready =3D false; - ndev->vqs[i].modified_fields =3D 0; - } - - ndev->mvdev.cvq.ready =3D false; -} - static int setup_cvq_vring(struct mlx5_vdpa_dev *mvdev) { struct mlx5_control_vq *cvq =3D &mvdev->cvq; @@ -3035,12 +3023,14 @@ static int mlx5_vdpa_compat_reset(struct vdpa_devic= e *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 =3D 0; ndev->mvdev.suspended =3D false; ndev->cur_num_vqs =3D MLX5V_DEFAULT_VQ_COUNT; + ndev->mvdev.cvq.ready =3D false; ndev->mvdev.cvq.received_desc =3D 0; ndev->mvdev.cvq.completed_desc =3D 0; memset(ndev->event_cbs, 0, sizeof(*ndev->event_cbs) * (mvdev->max_vqs + 1= )); --=20 2.45.1