Index: sys/arm/include/pcb.h
===================================================================
--- sys/arm/include/pcb.h
+++ sys/arm/include/pcb.h
@@ -52,8 +52,18 @@
 #define	PCB_OWNFPU	0x00000001
 #define PCB_NOALIGNFLT	0x00000002
 	caddr_t	pcb_onfault;			/* On fault handler */
+
+/*
+ * This structure must be binary compatible regardless of PMAP
+ * version being used. Create reserved section for NEW_PMAP to
+ * make other variables be placed exactly in the same memory
+ * addresses.
+ */
 #ifdef  ARM_NEW_PMAP
 	uint32_t	pcb_pagedir;		/* TTB0 value */
+	uint32_t	*__pcb_rsvd_1;
+	uint32_t	__pcb_rsvd_2;
+	u_int		__pcb_rsvd_3;
 #else
 	vm_offset_t	pcb_pagedir;		/* PT hooks */
 	uint32_t *pcb_pl1vec;			/* PTR to vector_base L1 entry*/