hw/virtio/virtio-bus.h

42     void (*notify)(DeviceState *d, uint16_t vector);
43     void (*save_config)(DeviceState *d, QEMUFile *f);
44     void (*save_queue)(DeviceState *d, int n, QEMUFile *f);
45     void (*save_extra_state)(DeviceState *d, QEMUFile *f);
46     int (*load_config)(DeviceState *d, QEMUFile *f);
47     int (*load_queue)(DeviceState *d, int n, QEMUFile *f);
48     int (*load_done)(DeviceState *d, QEMUFile *f);
49     int (*load_extra_state)(DeviceState *d, QEMUFile *f);
50     bool (*has_extra_state)(DeviceState *d);
51     bool (*query_guest_notifiers)(DeviceState *d);
52     int (*set_guest_notifiers)(DeviceState *d, int nvqs, bool assign);
53     int (*set_host_notifier_mr)(DeviceState *d, int n,
55     void (*vmstate_change)(DeviceState *d, bool running);
60     void (*pre_plugged)(DeviceState *d, Error **errp);
65     void (*device_plugged)(DeviceState *d, Error **errp);
70     void (*device_unplugged)(DeviceState *d);
71     int (*query_nvectors)(DeviceState *d);
77     bool (*ioeventfd_enabled)(DeviceState *d);
83     int (*ioeventfd_assign)(DeviceState *d, EventNotifier *notifier,
88     bool (*queue_enabled)(DeviceState *d, int n);
95     AddressSpace *(*get_dma_as)(DeviceState *d);
96     bool (*iommu_enabled)(DeviceState *d);
136     DeviceState *qdev = kid ? kid->child : NULL;  in virtio_bus_get_device()