diff mbox series

[vfio,4/5] vfio/mlx5: Block incremental query upon migf state error

Message ID 20240130170227.153464-5-yishaih@nvidia.com (mailing list archive)
State New, archived
Headers show
Series Improve mlx5 driver to better handle some error cases | expand

Commit Message

Yishai Hadas Jan. 30, 2024, 5:02 p.m. UTC 
Block incremental query which is state-dependent once the migration file
was previously marked with state error.

This may prevent redundant calls to firmware upon PRE_COPY which will
end-up with a failure and a syndrome printed in dmesg.

Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
---
 drivers/vfio/pci/mlx5/cmd.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/vfio/pci/mlx5/cmd.c b/drivers/vfio/pci/mlx5/cmd.c
index bed1ba9f1bf5..65135c614b5e 100644
--- a/drivers/vfio/pci/mlx5/cmd.c
+++ b/drivers/vfio/pci/mlx5/cmd.c
@@ -121,6 +121,11 @@  int mlx5vf_cmd_query_vhca_migration_state(struct mlx5vf_pci_core_device *mvdev,
 			}
 			query_flags &= ~MLX5VF_QUERY_INC;
 		}
+		/* Block incremental query which is state-dependent */
+		if (mvdev->saving_migf->state == MLX5_MIGF_STATE_ERROR) {
+			complete(&mvdev->saving_migf->save_comp);
+			return -ENODEV;
+		}
 	}
 
 	MLX5_SET(query_vhca_migration_state_in, in, opcode,