diff options
| -rw-r--r-- | hw/virtio/vhost.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 60747a6f93..bc899fc60e 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -131,6 +131,11 @@ static int vhost_sync_dirty_bitmap(struct vhost_dev *dev, } for (i = 0; i < dev->nvqs; ++i) { struct vhost_virtqueue *vq = dev->vqs + i; + + if (!vq->used_phys && !vq->used_size) { + continue; + } + vhost_dev_sync_region(dev, section, start_addr, end_addr, vq->used_phys, range_get_last(vq->used_phys, vq->used_size)); } @@ -168,6 +173,11 @@ static uint64_t vhost_get_log_size(struct vhost_dev *dev) } for (i = 0; i < dev->nvqs; ++i) { struct vhost_virtqueue *vq = dev->vqs + i; + + if (!vq->used_phys && !vq->used_size) { + continue; + } + uint64_t last = vq->used_phys + vq->used_size - 1; log_size = MAX(log_size, last / VHOST_LOG_CHUNK + 1); } |