On 02/24/2012 02:30 PM, Andreas Färber wrote: > SysBus is supposed to go away in Anthony's upcoming 4th QOM series, so > I'd rather not base a new series on that.
Not sure about that. I haven't understood well the scope of the series, but I think it only converted buses to QOM, it didn't kill them. Perhaps SysBus was special, in which case it would become automatically hotpluggable: just create a new QOM object. > The issue with TYPE_DEVICE is that we don't want to leak that into the > user emulators (would break the build), and any infrastructure only > available to qdev should gradually be made accessible to all objects > (Paolo has done some work in that direction wrt properties). I haven't, but it would be next on the list of things to do. > So the main remaining difference between Object and Device is the > GPIO IRQ support. Anthony wanted to introduce Pin objects to replace > qemu_irq. Aiming at "replacing" is a bad idea unless you can do it fast and painlessly. Adding gpio_in and gpio_out property types would be more useful and would let you expose qemu_irq as QOM. You can then change the existing qdev.c functions to operate on those new property types. Paolo
