> +const struct dma_map_ops virtio_direct_dma_ops; This belongs into a header if it is non-static. If you only use it in this file anyway please mark it static and avoid a forward declaration. > + > int virtio_finalize_features(struct virtio_device *dev) > { > int ret = dev->config->finalize_features(dev); > @@ -174,6 +176,9 @@ int virtio_finalize_features(struct virtio_device *dev) > if (ret) > return ret; > > + if (virtio_has_iommu_quirk(dev)) > + set_dma_ops(dev->dev.parent, &virtio_direct_dma_ops); This needs a big fat comment explaining what is going on here. Also not new, but I find the existance of virtio_has_iommu_quirk and its name horribly confusing. It might be better to open code it here once only a single caller is left. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization