diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index e88b62e..d5680cd 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -231,6 +231,9 @@
 
 extern int pnpacpi_disabled;
 
+#define PXM_INVAL	(-1)
+#define NID_INVAL	(-1)
+
 #else	/* CONFIG_ACPI */
 
 static inline int acpi_boot_init(void)