[S390] Add four level page tables for CONFIG_64BIT=y.

[linux-2.6-omap-h63xx.git] / include / asm-s390 / processor.h

diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index e8785634cbdbf99540d8fca6a843a016904178e8..5a21f457d58380ffae6eb195f3b320721d5d49e4 100644 (file)
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -64,24 +64,28 @@ extern int get_cpu_capability(unsigned int *);
  */
 #ifndef __s390x__
 
-# define TASK_SIZE             (0x80000000UL)
-# define TASK_UNMAPPED_BASE    (TASK_SIZE / 2)
-# define DEFAULT_TASK_SIZE     (0x80000000UL)
+#define TASK_SIZE              (1UL << 31)
+#define TASK_UNMAPPED_BASE     (1UL << 30)
 
 #else /* __s390x__ */
 
-# define TASK_SIZE_OF(tsk)     (test_tsk_thread_flag(tsk, TIF_31BIT) ? \
-                                       (0x80000000UL) : (0x40000000000UL))
-# define TASK_SIZE             TASK_SIZE_OF(current)
-# define TASK_UNMAPPED_BASE    (TASK_SIZE / 2)
-# define DEFAULT_TASK_SIZE     (0x40000000000UL)
+#define TASK_SIZE_OF(tsk)      (test_tsk_thread_flag(tsk,TIF_31BIT) ? \
+                                       (1UL << 31) : (1UL << 53))
+#define TASK_UNMAPPED_BASE     (test_thread_flag(TIF_31BIT) ? \
+                                       (1UL << 30) : (1UL << 41))
+#define TASK_SIZE              TASK_SIZE_OF(current)
 
 #endif /* __s390x__ */
 
 #ifdef __KERNEL__
 
-#define STACK_TOP              TASK_SIZE
-#define STACK_TOP_MAX          DEFAULT_TASK_SIZE
+#ifndef __s390x__
+#define STACK_TOP              (1UL << 31)
+#else /* __s390x__ */
+#define STACK_TOP              (1UL << (test_thread_flag(TIF_31BIT) ? 31:53))
+#endif /* __s390x__ */
+
+#define STACK_TOP_MAX          STACK_TOP
 
 #endif