1 files changed, 12 insertions, 0 deletions

diff --git a/include/asm-sparc64/processor.h b/include/asm-sparc64/processor.h
index 66dd2fa0e319..48e74965c6e5 100644
--- a/include/asm-sparc64/processor.h
+++ b/include/asm-sparc64/processor.h
@@ -36,7 +36,19 @@
 #else
 #define VPTE_SIZE       (1 << (VA_BITS - PAGE_SHIFT + 3))
 #endif
+
 #define TASK_SIZE       ((unsigned long)-VPTE_SIZE)
+#ifdef __KERNEL__
+
+#define STACK_TOP32     ((1UL << 32UL) - PAGE_SIZE)
+#define STACK_TOP64     (0x0000080000000000UL - (1UL << 32UL))
+
+#define STACK_TOP       (test_thread_flag(TIF_32BIT) ? \
+                         STACK_TOP32 : STACK_TOP64)
+
+#define STACK_TOP_MAX   STACK_TOP64
+
+#endif
 
 #ifndef __ASSEMBLY__