Index: kernel/generic/include/mm/as.h
===================================================================
--- kernel/generic/include/mm/as.h	(revision 46e886fb215db4c5bd1015c2bfd2c6d661dd93bd)
+++ kernel/generic/include/mm/as.h	(revision 1b1be5f1a71e1f658889ccb441f5fe8ad9bc216f)
@@ -59,4 +59,10 @@
 #define KERNEL_ADDRESS_SPACE_SHADOWED  KERNEL_ADDRESS_SPACE_SHADOWED_ARCH
 
+/**
+ * Defined to be true if user address space and kernel address space do not
+ * share the same page table.
+ */
+#define KERNEL_SEPARATE_PTL0 KERNEL_SEPARATE_PTL0_ARCH
+
 #define KERNEL_ADDRESS_SPACE_START  KERNEL_ADDRESS_SPACE_START_ARCH
 #define KERNEL_ADDRESS_SPACE_END    KERNEL_ADDRESS_SPACE_END_ARCH