static DEFINE_SPINLOCK(device_domain_lock);
 static LIST_HEAD(device_domain_list);
 
+static struct iommu_ops intel_iommu_ops;
+
 static int __init intel_iommu_setup(char *str)
 {
        if (!str)
        init_timer(&unmap_timer);
        force_iommu = 1;
        dma_ops = &intel_dma_ops;
+
+       register_iommu(&intel_iommu_ops);
+
        return 0;
 }
 
 
        return phys;
 }
+
+static struct iommu_ops intel_iommu_ops = {
+       .domain_init    = intel_iommu_domain_init,
+       .domain_destroy = intel_iommu_domain_destroy,
+       .attach_dev     = intel_iommu_attach_device,
+       .detach_dev     = intel_iommu_detach_device,
+       .map            = intel_iommu_map_range,
+       .unmap          = intel_iommu_unmap_range,
+       .iova_to_phys   = intel_iommu_iova_to_phys,
+};