virtio: move vmstate change tracking to core

Move tracking vmstate change from virtio-net to virtio.c
as it is going to be used by virito-blk and virtio-pci
for the ioeventfd support.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/hw/virtio.h b/hw/virtio.h
index 02fa312d3e..bd5274225e 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -95,6 +95,7 @@ typedef struct {
     unsigned (*get_features)(void * opaque);
     int (*set_guest_notifiers)(void * opaque, bool assigned);
     int (*set_host_notifier)(void * opaque, int n, bool assigned);
+    void (*vmstate_change)(void * opaque, bool running);
 } VirtIOBindings;
 
 #define VIRTIO_PCI_QUEUE_MAX 64
@@ -123,6 +124,8 @@ struct VirtIODevice
     const VirtIOBindings *binding;
     void *binding_opaque;
     uint16_t device_id;
+    bool vm_running;
+    VMChangeStateEntry *vmstate;
 };
 
 static inline void virtio_set_status(VirtIODevice *vdev, uint8_t val)