void empty_slot_init(target_phys_addr_t addr, uint64_t slot_size) { if (slot_size > 0) { /* Only empty slots larger than 0 byte need handling. */ DeviceState *dev; SysBusDevice *s; EmptySlot *e; dev = qdev_create(NULL, "empty_slot"); s = sysbus_from_qdev(dev); e = FROM_SYSBUS(EmptySlot, s); e->size = slot_size; qdev_init_nofail(dev); sysbus_mmio_map(s, 0, addr); } }