diff options
Diffstat (limited to 'hw/virtio.c')
| -rw-r--r-- | hw/virtio.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/hw/virtio.c b/hw/virtio.c index 07dbf868fd..31bd9e32dc 100644 --- a/hw/virtio.c +++ b/hw/virtio.c @@ -575,11 +575,19 @@ int virtio_queue_get_num(VirtIODevice *vdev, int n) return vdev->vq[n].vring.num; } +void virtio_queue_notify_vq(VirtQueue *vq) +{ + if (vq->vring.desc) { + VirtIODevice *vdev = vq->vdev; + trace_virtio_queue_notify(vdev, vq - vdev->vq, vq); + vq->handle_output(vdev, vq); + } +} + void virtio_queue_notify(VirtIODevice *vdev, int n) { - if (n < VIRTIO_PCI_QUEUE_MAX && vdev->vq[n].vring.desc) { - trace_virtio_queue_notify(vdev, n, &vdev->vq[n]); - vdev->vq[n].handle_output(vdev, &vdev->vq[n]); + if (n < VIRTIO_PCI_QUEUE_MAX) { + virtio_queue_notify_vq(&vdev->vq[n]); } } @@ -743,11 +751,31 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f) void virtio_cleanup(VirtIODevice *vdev) { + qemu_del_vm_change_state_handler(vdev->vmstate); if (vdev->config) qemu_free(vdev->config); qemu_free(vdev->vq); } +static void virtio_vmstate_change(void *opaque, int running, int reason) +{ + VirtIODevice *vdev = opaque; + bool backend_run = running && (vdev->status & VIRTIO_CONFIG_S_DRIVER_OK); + vdev->vm_running = running; + + if (backend_run) { + virtio_set_status(vdev, vdev->status); + } + + if (vdev->binding->vmstate_change) { + vdev->binding->vmstate_change(vdev->binding_opaque, backend_run); + } + + if (!backend_run) { + virtio_set_status(vdev, vdev->status); + } +} + VirtIODevice *virtio_common_init(const char *name, uint16_t device_id, size_t config_size, size_t struct_size) { @@ -774,6 +802,8 @@ VirtIODevice *virtio_common_init(const char *name, uint16_t device_id, else vdev->config = NULL; + vdev->vmstate = qemu_add_vm_change_state_handler(virtio_vmstate_change, vdev); + return vdev; } |