Index: kernel/arch/sparc64/src/sun4u/asm.S
===================================================================
--- kernel/arch/sparc64/src/sun4u/asm.S	(revision be6cef1be0dc2c677a0cbe6a56cde9c7cbca71c9)
+++ kernel/arch/sparc64/src/sun4u/asm.S	(revision 34bf3d57b654a7c5ea18d1c73a769dbf49c8eee4)
@@ -67,4 +67,8 @@
 	WRITE_ALTERNATE_REGISTER %g6, PSTATE_IG_BIT
 
+.global read_from_ag_g6
+read_from_ag_g6:
+	READ_ALTERNATE_REGISTER %g6, PSTATE_AG_BIT
+
 .global read_from_ag_g7
 read_from_ag_g7: