diff --git a/arch/sparc/include/asm/processor_64.h b/arch/sparc/include/asm/processor_64.h
index 137a6bd72fc805f9ddfd4f4a12acd3fdf7199c78..59fcebb8f4405917ef60858251c5f81fd11c6b35 100644
--- a/arch/sparc/include/asm/processor_64.h
+++ b/arch/sparc/include/asm/processor_64.h
@@ -36,10 +36,10 @@
 #define VPTE_SIZE	(1 << (VA_BITS - PAGE_SHIFT + 3))
 #endif
 
-#define TASK_SIZE	((unsigned long)-VPTE_SIZE)
 #define TASK_SIZE_OF(tsk) \
 	(test_tsk_thread_flag(tsk,TIF_32BIT) ? \
-	 (1UL << 32UL) : TASK_SIZE)
+	 (1UL << 32UL) : ((unsigned long)-VPTE_SIZE))
+#define TASK_SIZE	TASK_SIZE_OF(current)
 #ifdef __KERNEL__
 
 #define STACK_TOP32	((1UL << 32UL) - PAGE_SIZE)