Re: [vhost-user] Expectations around reconnection

[Philippe Mathieu-Daudé]

Cc'ing few developers

On 5/11/21 3:33 PM, Boeuf, Sebastien wrote:
> Hi All,
> 
> In the context of vhost-user, I was wondering how a reconnection should
> be handled from the VMM perspective?
> 
> In particular, I'm looking at the OVS-DPDK use case using the client 
> mode (meaning QEMU acts as the server), and I'd like to understand what 
> QEMU does to handle this. Upon disconnection from the backend, does QEMU
>  reset the virtio device (meaning the guest
> is notified about it)? And upon the new connection from the backend, 
> does QEMU go through the whole vhost-user initialization once again 
> (feature acknowledgement, setup of vrings, etc...), or does it simply 
> assume the backend will have saved all these information?
> 
> Thanks for your time,
> Sebastien