func: static void vfio_unmap_bar(VFIODevice *vdev, int nr)
  
  {
  
      VFIOBAR *bar = &vdev->bars[nr];
  
  
  
      if (!bar->size) {
  
          return;
  
      }
  
  
  
      vfio_bar_quirk_teardown(vdev, nr);
  
  
  
      memory_region_del_subregion(&bar->mem, &bar->mmap_mem);
  
      munmap(bar->mmap, memory_region_size(&bar->mmap_mem));
  
  
  
  
      if (vdev->msix && vdev->msix->table_bar == nr) {
  
          memory_region_del_subregion(&bar->mem, &vdev->msix->mmap_mem);
  
          munmap(vdev->msix->mmap, memory_region_size(&vdev->msix->mmap_mem));
  
  
      }
  
  
  
      memory_region_destroy(&bar->mem);
  
  }