iommu/vt-d: Use device numa domain if RHSA is missing

	return fls(mask);

}

static int domain_update_device_node(struct dmar_domain *domain)

{

	struct device_domain_info *info;

	int nid = NUMA_NO_NODE;

	assert_spin_locked(&device_domain_lock);

	if (list_empty(&domain->devices))

		return NUMA_NO_NODE;

	list_for_each_entry(info, &domain->devices, link) {

		if (!info->dev)

			continue;

		/*

		 * There could possibly be multiple device numa nodes as devices

		 * within the same domain may sit behind different IOMMUs. There

		 * isn't perfect answer in such situation, so we select first

		 * come first served policy.

		 */

		nid = dev_to_node(info->dev);

		if (nid != NUMA_NO_NODE)

			break;

	}

	return nid;

}

/* Some capabilities may be different across iommus */

static void domain_update_iommu_cap(struct dmar_domain *domain)

{

	domain_update_iommu_coherency(domain);

	domain->iommu_snooping = domain_update_iommu_snooping(NULL);

	domain->iommu_superpage = domain_update_iommu_superpage(domain, NULL);

	/*

	 * If RHSA is missing, we should default to the device numa domain

	 * as fall back.

	 */

	if (domain->nid == NUMA_NO_NODE)

		domain->nid = domain_update_device_node(domain);

}

struct context_entry *iommu_context_addr(struct intel_iommu *iommu, u8 bus,

		if (type == IOMMU_DOMAIN_DMA)

			intel_init_iova_domain(dmar_domain);

		domain_update_iommu_cap(dmar_domain);

		domain = &dmar_domain->domain;

		domain->geometry.aperture_start = 0;

		domain->geometry.aperture_end   =