[pve-devel] qemu-server : cpu hotplug rework

[Dietmar Maurer]

> > > maybe do you don't have define vcpus ?
> > 
> > vcpus is not set when you create a VM using the GUI.
> > 
> > This leads to the situation that CPU hotplug is disabled by default.
> > 
> > Any ideas how to improve that situation?
> 
> Can we simply use topology from host on create?
> 
> # qm create 100 --vcpus 3
> 
> Above command use socket/cores from host, so the resulting config is
> 
> vcpus: 3
> sockets: 2
> cores: 4
> 
> What do you think?

Or should we simply assume 'vcpus' is the switch to enable hotplug?
We could do the same for memory hotplug, and disable it if 'dimm_memory' is
not defined inside config?