[dpdk-dev] [PATCH v2 3/5] vhost: handle memory hotplug with vDPA devices

[Maxime Coquelin]

On 6/25/20 3:38 PM, Matan Azrad wrote:
> Some vDPA drivers' basic configurations should be updated when the
> guest memory is hotplugged.
> 
> Close vDPA device before hotplug operation and recreate it after the
> hotplug operation is done.
> 
> Signed-off-by: Matan Azrad <matan at mellanox.com>
> ---
>  lib/librte_vhost/vhost_user.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
> index b90fc78..f690fdb 100644
> --- a/lib/librte_vhost/vhost_user.c
> +++ b/lib/librte_vhost/vhost_user.c
> @@ -1073,6 +1073,15 @@
>  	}
>  
>  	if (dev->mem) {
> +		if (dev->flags & VIRTIO_DEV_VDPA_CONFIGURED) {
> +			int did = dev->vdpa_dev_id;
> +			struct rte_vdpa_device *vdpa_dev =
> +						rte_vdpa_get_device(did);
> +
> +			if (vdpa_dev && vdpa_dev->ops->dev_close)
> +				vdpa_dev->ops->dev_close(dev->vid);
> +			dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
> +		}
>  		free_mem_region(dev);
>  		rte_free(dev->mem);
>  		dev->mem = NULL;
> 

Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>

Thanks,
Maxime