Index: kernel/arch/sparc64/src/smp/sun4v/smp.c
===================================================================
--- kernel/arch/sparc64/src/smp/sun4v/smp.c	(revision d99c1d2ba8c7b2c687d430f2e9fd237046606545)
+++ kernel/arch/sparc64/src/smp/sun4v/smp.c	(revision 626f9079bcffdfbce27d2e92f138ae9ce8e4c650)
@@ -54,4 +54,5 @@
 #include <arch/smp/sun4v/smp.h>
 #include <str.h>
+#include <errno.h>
 
 /** hypervisor code of the "running" state of the CPU */