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| author | Dragos Tatulea <dtatulea@nvidia.com> | 2023-10-18 20:14:54 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-11-01 09:19:57 -0400 |
| commit | cf6e024cf7683551ae218ce9af56b82e68a0ef06 (patch) | |
| tree | 5a213c04b9cfb016e6a35ad6b20fdfb0b41110f7 | |
| parent | 03dd63c8fae4599439a30e0dde91061789260dbe (diff) | |
| download | lwn-cf6e024cf7683551ae218ce9af56b82e68a0ef06.tar.gz lwn-cf6e024cf7683551ae218ce9af56b82e68a0ef06.zip | |
vdpa/mlx5: Make iotlb helper functions more generic
They will be used in a follow-up patch.
For dup_iotlb, avoid the src == dst case. This is an error.
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Message-Id: <20231018171456.1624030-17-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
Tested-by: Si-Wei Liu <si-wei.liu@oracle.com>
Tested-by: Lei Yang <leiyang@redhat.com>
| -rw-r--r-- | drivers/vdpa/mlx5/core/mr.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/vdpa/mlx5/core/mr.c b/drivers/vdpa/mlx5/core/mr.c index 3dee6d9bed6b..4a3df865df40 100644 --- a/drivers/vdpa/mlx5/core/mr.c +++ b/drivers/vdpa/mlx5/core/mr.c @@ -454,20 +454,23 @@ static void destroy_dma_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_mr *mr) mlx5_vdpa_destroy_mkey(mvdev, mr->mkey); } -static int dup_iotlb(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *src) +static int dup_iotlb(struct vhost_iotlb *dst, struct vhost_iotlb *src) { struct vhost_iotlb_map *map; u64 start = 0, last = ULLONG_MAX; int err; + if (dst == src) + return -EINVAL; + if (!src) { - err = vhost_iotlb_add_range(mvdev->cvq.iotlb, start, last, start, VHOST_ACCESS_RW); + err = vhost_iotlb_add_range(dst, start, last, start, VHOST_ACCESS_RW); return err; } for (map = vhost_iotlb_itree_first(src, start, last); map; map = vhost_iotlb_itree_next(map, start, last)) { - err = vhost_iotlb_add_range(mvdev->cvq.iotlb, map->start, map->last, + err = vhost_iotlb_add_range(dst, map->start, map->last, map->addr, map->perm); if (err) return err; @@ -475,9 +478,9 @@ static int dup_iotlb(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *src) return 0; } -static void prune_iotlb(struct mlx5_vdpa_dev *mvdev) +static void prune_iotlb(struct vhost_iotlb *iotlb) { - vhost_iotlb_del_range(mvdev->cvq.iotlb, 0, ULLONG_MAX); + vhost_iotlb_del_range(iotlb, 0, ULLONG_MAX); } static void destroy_user_mr(struct mlx5_vdpa_dev *mvdev, struct mlx5_vdpa_mr *mr) @@ -544,7 +547,7 @@ void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev *mvdev) for (int i = 0; i < MLX5_VDPA_NUM_AS; i++) mlx5_vdpa_destroy_mr(mvdev, mvdev->mr[i]); - prune_iotlb(mvdev); + prune_iotlb(mvdev->cvq.iotlb); } static int _mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev, @@ -596,8 +599,8 @@ int mlx5_vdpa_update_cvq_iotlb(struct mlx5_vdpa_dev *mvdev, spin_lock(&mvdev->cvq.iommu_lock); - prune_iotlb(mvdev); - err = dup_iotlb(mvdev, iotlb); + prune_iotlb(mvdev->cvq.iotlb); + err = dup_iotlb(mvdev->cvq.iotlb, iotlb); spin_unlock(&mvdev->cvq.iommu_lock); |