iommu/vt-d: Include ACPI devices in iommu=pt

	return 1;

}

static int __init dev_prepare_static_identity_mapping(struct device *dev, int hw)

{

	int ret;

	if (!iommu_should_identity_map(dev, 1))

		return 0;

	ret = domain_add_dev_info(si_domain, dev,

				  hw ? CONTEXT_TT_PASS_THROUGH :

				       CONTEXT_TT_MULTI_LEVEL);

	if (!ret)

		pr_info("IOMMU: %s identity mapping for device %s\n",

			hw ? "hardware" : "software", dev_name(dev));

	else if (ret == -ENODEV)

		/* device not associated with an iommu */

		ret = 0;

	return ret;

}

static int __init iommu_prepare_static_identity_mapping(int hw)

{

	struct pci_dev *pdev = NULL;

	int ret;

	struct dmar_drhd_unit *drhd;

	struct intel_iommu *iommu;

	struct device *dev;

	int i;

	int ret = 0;

	ret = si_domain_init(hw);

	if (ret)

		return -EFAULT;

	for_each_pci_dev(pdev) {

		if (iommu_should_identity_map(&pdev->dev, 1)) {

			ret = domain_add_dev_info(si_domain, &pdev->dev,

					     hw ? CONTEXT_TT_PASS_THROUGH :

						  CONTEXT_TT_MULTI_LEVEL);

			if (ret) {

				/* device not associated with an iommu */

				if (ret == -ENODEV)

					continue;

		ret = dev_prepare_static_identity_mapping(&pdev->dev, hw);

		if (ret)

			return ret;

	}

			pr_info("IOMMU: %s identity mapping for device %s\n",

				hw ? "hardware" : "software", pci_name(pdev));

	for_each_active_iommu(iommu, drhd)

		for_each_active_dev_scope(drhd->devices, drhd->devices_cnt, i, dev) {

			struct acpi_device_physical_node *pn;

			struct acpi_device *adev;

			if (dev->bus != &acpi_bus_type)

				continue;

			adev= to_acpi_device(dev);

			mutex_lock(&adev->physical_node_lock);

			list_for_each_entry(pn, &adev->physical_node_list, node) {

				ret = dev_prepare_static_identity_mapping(pn->dev, hw);

				if (ret)

					break;

			}

			mutex_unlock(&adev->physical_node_lock);

			if (ret)

				return ret;

		}

	return 0;