Re: [Qemu-devel] [PATCH V3] vhost_net: start/stop guest notifiers properly

[Zhangjie (HZ)]

On 2014/8/19 12:56, Jason Wang wrote:
> commit a9f98bb5ebe6fb1869321dcc58e72041ae626ad8 vhost: multiqueue
 call it before setting
> Zhang Jie, please test this patch to see if it fixes the issue.

> +static void vhost_net_set_vq_index(struct vhost_net *net, int vq_index)
> +{
> +    net->dev.vq_index = vq_index;
> +}
                          int vq_index)
> ...
Because of vhost_net_set_vq_index, VM can be start successfully.
But, after about 80 times of migration under my environment, virtual nic became 
unreachable again.
When I use jprobe to notify tap, the virtual nic becomes reachable again. This 
shows that interrupts missing causes
the problem.
-- 
Best Wishes!
Zhang Jie