Re: [PATCH v2] virtio_balloon: prime stats vq after virtio_device_ready()

[David Hildenbrand (Arm)]

>>> -		virtqueue_kick(vb->stats_vq);
>>> +		disable_work(&vb->update_balloon_stats_work);
>>
>> That's to stop the stats queue triggering stats_request() I assume?
> 
> Yes.
> 
>> Is that
>> valid before we actually added+kicked ourselves?
> 
> Why not?

I was wondering whether the spec would state something about that.

> 
>> Also, can't we simply handle that in stats_request(), just ignoring it there?
> 
> Then we'd need to maintain a special flag and I dislike that.

I was hoping that we could use the device-ready indication, but there would be a
small race window indeed.

-- 
Cheers,

David