vfio_pin_pages
ret = vfio_pin_pages(&vgpu->vfio_device, cur_iova, 1,
ret = vfio_pin_pages(vdev, *first, npage,
ret = vfio_pin_pages(&q->matrix_mdev->vdev, nib, 1,
EXPORT_SYMBOL(vfio_pin_pages);
int vfio_pin_pages(struct vfio_device *device, dma_addr_t iova,