diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 199afc2cd122c..387fc821703a8 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -403,6 +403,8 @@ struct acpi_cdat_dsmas {
 /* Flags for subtable above */
 
 #define ACPI_CDAT_DSMAS_NON_VOLATILE        (1 << 2)
+#define ACPI_CDAT_DSMAS_SHAREABLE           (1 << 3)
+#define ACPI_CDAT_DSMAS_READ_ONLY           (1 << 6)
 
 /* Subtable 1: Device scoped Latency and Bandwidth Information Structure (DSLBIS) */