Index: sys/dev/arcmsr/arcmsr.c
===================================================================
--- sys/dev/arcmsr/arcmsr.c	(revision 215280)
+++ sys/dev/arcmsr/arcmsr.c	(working copy)
@@ -2470,15 +2470,11 @@ static void arcmsr_action(struct cam_sim * psim, u
 						splx(s);
 					}
 					else {		/* Buffer is physical */
-#ifdef	PAE
-						panic("arcmsr: CAM_DATA_PHYS not supported");
-#else
 						struct bus_dma_segment seg;
 						
-						seg.ds_addr = (bus_addr_t)pccb->csio.data_ptr;
+						seg.ds_addr = (bus_addr_t)(vm_offset_t)pccb->csio.data_ptr;
 						seg.ds_len = pccb->csio.dxfer_len;
 						arcmsr_execute_srb(srb, &seg, 1, 0);
-#endif
 					}
 				} else { 
 					/* Scatter/gather list */
@@ -3421,7 +3417,11 @@ static u_int32_t arcmsr_initialize(device_t dev)
 	if(bus_dma_tag_create(  /*parent_dmat*/	acb->parent_dmat,
 							/*alignment*/	1,
 							/*boundary*/	0,
-							/*lowaddr*/		BUS_SPACE_MAXADDR,
+#ifdef PAE
+							/*lowaddr*/	BUS_SPACE_MAXADDR_32BIT,
+#else
+							/*lowaddr*/	BUS_SPACE_MAXADDR,
+#endif
 							/*highaddr*/	BUS_SPACE_MAXADDR,
 							/*filter*/		NULL,
 							/*filterarg*/	NULL,