Index: sys/arm64/arm64/nexus.c
===================================================================
--- sys/arm64/arm64/nexus.c
+++ sys/arm64/arm64/nexus.c
@@ -168,10 +168,10 @@
 	    rman_manage_region(&mem_rman, 0, mem_rman.rm_end))
 		panic("nexus_attach mem_rman");
 	irq_rman.rm_start = 0;
-	irq_rman.rm_end = ~0;
+	irq_rman.rm_end = INTR_IRQ_INVALID - 1;
 	irq_rman.rm_type = RMAN_ARRAY;
 	irq_rman.rm_descr = "Interrupts";
-	if (rman_init(&irq_rman) || rman_manage_region(&irq_rman, 0, ~0))
+	if (rman_init(&irq_rman) || rman_manage_region(&irq_rman, 0, irq_rman.rm_end))
 		panic("nexus_attach irq_rman");
 
 	bus_generic_probe(dev);