[PATCH] vdpa/mlx5: workaround queue stop with traffic
Matan Azrad
matan at nvidia.com
Mon Nov 22 14:12:35 CET 2021
When the event thread polls traffic and a virtq is stopping, the FW loses
synchronization in the virtq indexes.
It causes LM failure on synchronization between the HOST indexes to
the GUEST indexes.
Unset the event thread before the queue stop in the LM process.
Fixes: 31b9c29c86af ("vdpa/mlx5: support close and config operations")
Cc: stable at dpdk.org
Signed-off-by: Matan Azrad <matan at nvidia.com>
Acked-by: Xueming Li <xuemingl at nvidia.com>
---
drivers/vdpa/mlx5/mlx5_vdpa.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.c b/drivers/vdpa/mlx5/mlx5_vdpa.c
index b9e84dd9bf..8dfaba791d 100644
--- a/drivers/vdpa/mlx5/mlx5_vdpa.c
+++ b/drivers/vdpa/mlx5/mlx5_vdpa.c
@@ -250,10 +250,10 @@ mlx5_vdpa_dev_close(int vid)
DRV_LOG(ERR, "Invalid vDPA device: %s.", vdev->device->name);
return -1;
}
- if (priv->configured)
- ret |= mlx5_vdpa_lm_log(priv);
mlx5_vdpa_err_event_unset(priv);
mlx5_vdpa_cqe_event_unset(priv);
+ if (priv->configured)
+ ret |= mlx5_vdpa_lm_log(priv);
mlx5_vdpa_steer_unset(priv);
mlx5_vdpa_virtqs_release(priv);
mlx5_vdpa_event_qp_global_release(priv);
--
2.25.1
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