static void virtio_balloon_free_page_done(VirtIOBalloon *s)
{
VirtIODevice *vdev = VIRTIO_DEVICE(s);
s->free_page_report_status = FREE_PAGE_REPORT_S_DONE;
virtio_notify_config(vdev);
}
static void virtio_blk_change_cb(void *opaque, int reason)
{
VirtIOBlock *s = opaque;
if (reason & CHANGE_SIZE) {
virtio_notify_config(&s->vdev);
}
}
static void virtio_balloon_to_target(void *opaque, ram_addr_t target)
{
VirtIOBalloon *dev = opaque;
if (target > ram_size) {
target = ram_size;
}
if (target) {
dev->num_pages = (ram_size - target) >> VIRTIO_BALLOON_PFN_SHIFT;
virtio_notify_config(&dev->vdev);
}
}
static void virtio_net_set_link_status(VLANClientState *nc)
{
VirtIONet *n = DO_UPCAST(NICState, nc, nc)->opaque;
uint16_t old_status = n->status;
if (nc->link_down)
n->status &= ~VIRTIO_NET_S_LINK_UP;
else
n->status |= VIRTIO_NET_S_LINK_UP;
if (n->status != old_status)
virtio_notify_config(&n->vdev);
}
static void virtio_balloon_to_target(void *opaque, ram_addr_t target)
{
VirtIOBalloon *dev = VIRTIO_BALLOON(opaque);
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
ram_addr_t vm_ram_size = get_current_ram_size();
if (target > vm_ram_size) {
target = vm_ram_size;
}
if (target) {
dev->num_pages = (vm_ram_size - target) >> VIRTIO_BALLOON_PFN_SHIFT;
virtio_notify_config(vdev);
}
trace_virtio_balloon_to_target(target, dev->num_pages);
}
static void virtio_balloon_to_target(void *opaque, ram_addr_t target,
MonitorCompletion cb, void *cb_data)
{
VirtIOBalloon *dev = opaque;
if (target > ram_size)
target = ram_size;
if (target) {
dev->num_pages = (ram_size - target) >> VIRTIO_BALLOON_PFN_SHIFT;
virtio_notify_config(&dev->vdev);
} else {
/* For now, only allow one request at a time. This restriction can be
* removed later by queueing callback and data pairs.
*/
if (dev->stats_callback != NULL) {
static void virtio_balloon_free_page_start(VirtIOBalloon *s)
{
VirtIODevice *vdev = VIRTIO_DEVICE(s);
/* For the stop and copy phase, we don't need to start the optimization */
if (!vdev->vm_running) {
return;
}
if (s->free_page_report_cmd_id == UINT_MAX) {
s->free_page_report_cmd_id =
VIRTIO_BALLOON_FREE_PAGE_REPORT_CMD_ID_MIN;
} else {
s->free_page_report_cmd_id++;
}
s->free_page_report_status = FREE_PAGE_REPORT_S_REQUESTED;
virtio_notify_config(vdev);
}
static void virtio_balloon_free_page_stop(VirtIOBalloon *s)
{
VirtIODevice *vdev = VIRTIO_DEVICE(s);
if (s->free_page_report_status != FREE_PAGE_REPORT_S_STOP) {
/*
* The lock also guarantees us that the
* virtio_ballloon_get_free_page_hints exits after the
* free_page_report_status is set to S_STOP.
*/
qemu_mutex_lock(&s->free_page_lock);
/*
* The guest hasn't done the reporting, so host sends a notification
* to the guest to actively stop the reporting.
*/
s->free_page_report_status = FREE_PAGE_REPORT_S_STOP;
qemu_mutex_unlock(&s->free_page_lock);
virtio_notify_config(vdev);
}
}
static void virtio_blk_resize(void *opaque)
{
VirtIODevice *vdev = VIRTIO_DEVICE(opaque);
virtio_notify_config(vdev);
}
static void virtio_blk_resize(void *opaque)
{
VirtIOBlock *s = opaque;
virtio_notify_config(&s->vdev);
}
