On Thu, Jun 5, 2025 at 2:48 AM Dragos Tatulea <[email protected]> wrote:
>
> needs_teardown is a device flag that indicates when virtual queues need
> to be recreated. This happens for certain configuration changes: queue
> size and some specific features.
>
> Currently, the needs_teardown state can be incorrectly reset by
> subsequent .set_vq_num() calls. For example, for 1 rx VQ with size 512
> and 1 tx VQ with size 256:
>
> .set_vq_num(0, 512) -> sets needs_teardown to true (rx queue has a
>                        non-default size)
> .set_vq_num(1, 256) -> sets needs_teardown to false (tx queue has a
>                        default size)
>
> This change takes into account the previous value of the needs_teardown
> flag when re-calculating it during VQ size configuration.
>
> Fixes: 0fe963d6fc16 ("vdpa/mlx5: Re-create HW VQs under certain conditions")
> Signed-off-by: Dragos Tatulea <[email protected]>
> Reviewed-by: Shahar Shitrit <[email protected]>
> Reviewed-by: Si-Wei Liu <[email protected]>
> Tested-by: Si-Wei Liu<[email protected]>
> ---

Acked-by: Jason Wang <[email protected]>

Thanks


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