+static void domain_update_iommu_snooping(struct dmar_domain *domain)
+{
+ int i;
+
+ domain->iommu_snooping = 1;
+
+ i = find_first_bit(&domain->iommu_bmp, g_num_of_iommus);
+ for (; i < g_num_of_iommus; ) {
+ if (!ecap_sc_support(g_iommus[i]->ecap)) {
+ domain->iommu_snooping = 0;
+ break;
+ }
+ i = find_next_bit(&domain->iommu_bmp, g_num_of_iommus, i+1);
+ }
+}
+
+/* Some capabilities may be different across iommus */
+static void domain_update_iommu_cap(struct dmar_domain *domain)
+{
+ domain_update_iommu_coherency(domain);
+ domain_update_iommu_snooping(domain);
+}
+