diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index 22b02c6..5779565 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -348,6 +348,26 @@
 }
 #endif
 
+static int __init
+dmar_parse_one_rhsa(struct acpi_dmar_header *header)
+{
+	struct acpi_dmar_rhsa *rhsa;
+	struct dmar_drhd_unit *drhd;
+
+	rhsa = (struct acpi_dmar_rhsa *)header;
+	for_each_drhd_unit(drhd)
+		if (drhd->reg_base_addr == rhsa->base_address) {
+			int node = acpi_map_pxm_to_node(rhsa->proximity_domain);
+
+			if (!node_online(node))
+				node = -1;
+			drhd->iommu->node = node;
+		return 0;
+	}
+
+	return -ENODEV;
+}
+
 static void __init
 dmar_table_print_dmar_entry(struct acpi_dmar_header *header)
 {
@@ -467,7 +487,7 @@
 #endif
 			break;
 		case ACPI_DMAR_HARDWARE_AFFINITY:
-			/* We don't do anything with RHSA (yet?) */
+			ret = dmar_parse_one_rhsa(entry_header);
 			break;
 		default:
 			printk(KERN_WARNING PREFIX
@@ -677,6 +697,8 @@
 	iommu->agaw = agaw;
 	iommu->msagaw = msagaw;
 
+	iommu->node = -1;
+
 	/* the registers might be more than one page */
 	map_size = max_t(int, ecap_max_iotlb_offset(iommu->ecap),
 		cap_max_fault_reg_offset(iommu->cap));
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 4f0a72a..9310c69 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -332,6 +332,7 @@
 #ifdef CONFIG_INTR_REMAP
 	struct ir_table *ir_table;	/* Interrupt remapping info */
 #endif
+	int		node;
 };
 
 static inline void __iommu_flush_cache(