RE: [PATCH v4 11/13] iommu/vt-d: Add set_dev_pasid callback for nested domain

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Liu, Yi L <yi.l.liu@xxxxxxxxx>
> Sent: Monday, November 4, 2024 9:19 PM
> 
> +
> +	dev_pasid = domain_add_dev_pasid(domain, dev, pasid);
> +	if (IS_ERR(dev_pasid))
> +		return PTR_ERR(dev_pasid);
> +
> +	ret = domain_setup_nested(iommu, dmar_domain, dev, pasid, old);
> +	if (ret)
> +		goto out_remove_dev_pasid;
> +
> +	domain_remove_dev_pasid(old, dev, pasid);
> +

forgot one thing. Why not required to create a debugfs entry for
nested dev_pasid?