diff --git a/drivers/iommu/iommu-debug.c b/drivers/iommu/iommu-debug.c
index 2141782cd07c..0323a85bc9dd 100644
--- a/drivers/iommu/iommu-debug.c
+++ b/drivers/iommu/iommu-debug.c
@@ -84,6 +84,8 @@ static const char *iommu_debug_attr_to_string(enum iommu_attr attr)
 		return "DOMAIN_ATTR_EARLY_MAP";
 	case DOMAIN_ATTR_CB_STALL_DISABLE:
 		return "DOMAIN_ATTR_CB_STALL_DISABLE";
+	case DOMAIN_ATTR_SPLIT_TABLES:
+		return "DOMAIN_ATTR_SPLIT_TABLES";
 	default:
 		return "Unknown attr!";
 	}
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 58f950374c74..868a8f398971 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -189,7 +189,8 @@ enum iommu_attr {
 #define DOMAIN_ATTR_CB_STALL_DISABLE		(EXTENDED_ATTR_BASE + 17)
 #define DOMAIN_ATTR_USE_LLC_NWA			(EXTENDED_ATTR_BASE + 18)
 #define DOMAIN_ATTR_NO_CFRE			(EXTENDED_ATTR_BASE + 19)
-#define DOMAIN_ATTR_EXTENDED_MAX		(EXTENDED_ATTR_BASE + 20)
+#define DOMAIN_ATTR_SPLIT_TABLES		(EXTENDED_ATTR_BASE + 20)
+#define DOMAIN_ATTR_EXTENDED_MAX		(EXTENDED_ATTR_BASE + 21)
 
 /* These are the possible reserved region types */
 enum iommu_resv_type {