Re: VFIO Migration

[Gerd Hoffmann]

  Hi,

> > > The hardware interface together with the device state representation is 
> > > called
> > > a *device model*. Device models can be assigned URIs such as
> > > https://qemu.org/devices/e1000e to uniquely identify them.
> > 
> > Is that something that needs to be put together for every device where we
> > want to support migration? How do you create the URI?
> 
> Yes. If you are creating a custom device that no one else needs to
> emulate then you can simply pick a unique URL:
> 
>   https://vendor.com/my-dev
> 
> There doesn't need to be anything at the URL. It's just a unique string
> that no one else will use and therefore web URLs are handy because no
> one else will accidentally pick your string.

If this is just a string I think it would be better to use the reverse
domain name scheme (as used by virtio-serial too), i.e.

 - org.qemu.devices.e1000e
 - com.vendor.my-dev

take care,
  Gerd