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vdpa/mlx5: Clear and reinitialize software VQ data on reset
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 <cratiu@nvidia.com> Acked-by: Eugenio Pérez <eperezma@redhat.com> Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com> Message-Id: <20240626-stage-vdpa-vq-precreate-v2-8-560c491078df@nvidia.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -2941,18 +2941,6 @@ static void teardown_vq_resources(struct mlx5_vdpa_net *ndev)
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ndev->setup = false;
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}
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static void clear_vqs_ready(struct mlx5_vdpa_net *ndev)
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{
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int i;
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for (i = 0; i < ndev->mvdev.max_vqs; i++) {
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ndev->vqs[i].ready = false;
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ndev->vqs[i].modified_fields = 0;
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}
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ndev->mvdev.cvq.ready = false;
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}
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static int setup_cvq_vring(struct mlx5_vdpa_dev *mvdev)
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{
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struct mlx5_control_vq *cvq = &mvdev->cvq;
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@ -3035,12 +3023,14 @@ static int mlx5_vdpa_compat_reset(struct vdpa_device *vdev, u32 flags)
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down_write(&ndev->reslock);
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unregister_link_notifier(ndev);
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teardown_vq_resources(ndev);
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clear_vqs_ready(ndev);
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init_mvqs(ndev);
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if (flags & VDPA_RESET_F_CLEAN_MAP)
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mlx5_vdpa_destroy_mr_resources(&ndev->mvdev);
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ndev->mvdev.status = 0;
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ndev->mvdev.suspended = false;
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ndev->cur_num_vqs = MLX5V_DEFAULT_VQ_COUNT;
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ndev->mvdev.cvq.ready = false;
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ndev->mvdev.cvq.received_desc = 0;
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ndev->mvdev.cvq.completed_desc = 0;
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memset(ndev->event_cbs, 0, sizeof(*ndev->event_cbs) * (mvdev->max_vqs + 1));
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