[Qemu-devel] pvpanic device should not be automatically included as an internal device

[Marcel Apfelbaum]

Hi,

The problem with pvpanic being an internal device is that VMs running
operating systems without a driver for this device will have problems
when qemu will be upgraded (from qemu without this pvpanic).

The outcome may be, for example: in Windows(let's say XP) the Device manager
will open a "new device" wizard and the device will appear as an unrecognized 
device.
Now what will happen on a cluster with hundreds of such VMs? If that cluster 
has a health
monitoring service it may show all the VMs in a "not healthy" state.

My point is that a device that requires a driver that is not "inbox", should not
be present by default.
One possible solution is to add it manually with -device from command line.

Any thoughts?
Marcel