Re: [kvm-devel] [PATCH] Make virtio devices multi-function

[Marcelo T. <mto...@re...>]

On Tue, Apr 22, 2008 at 05:32:45PM +0300, Avi Kivity wrote:
> Anthony Liguori wrote:
> > This patch changes virtio devices to be multi-function devices whenever
> > possible.  This increases the number of virtio devices we can support now by
> > a factor of 8.
> >
> > With this patch, I've been able to launch a guest with either 220 disks or 220
> > network adapters.
> >
> >   
> 
> Does this play well with hotplug?  Perhaps we need to allocate a new 
> device on hotplug.
> 
> (certainly if we have a device with one function, which then gets 
> converted to a multifunction device)

Would have to change the hotplug code to handle functions...

It sounds less hacky to just extend the PCI slots instead of (ab)using
multiple functions per-slot.