[S390] dynamic page tables.

[pandora-kernel.git] / include / asm-s390 / processor.h

diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index 3b972d4..51d8891 100644 (file)
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -59,27 +59,37 @@ extern void s390_adjust_jiffies(void);
 extern void print_cpu_info(struct cpuinfo_S390 *);
 extern int get_cpu_capability(unsigned int *);
 
-/* Lazy FPU handling on uni-processor */
-extern struct task_struct *last_task_used_math;
-
 /*
  * User space process size: 2GB for 31 bit, 4TB for 64 bit.
  */
 #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             (test_thread_flag(TIF_31BIT) ? \
-                                       (0x80000000UL) : (0x40000000000UL))
-# 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__
 
+#ifndef __s390x__
+#define STACK_TOP              (1UL << 31)
+#define STACK_TOP_MAX          (1UL << 31)
+#else /* __s390x__ */
+#define STACK_TOP              (1UL << (test_thread_flag(TIF_31BIT) ? 31:42))
+#define STACK_TOP_MAX          (1UL << 42)
 #endif /* __s390x__ */
 
+
+#endif
+
 #define HAVE_ARCH_PICK_MMAP_LAYOUT
 
 typedef struct {
@@ -93,10 +103,8 @@ struct thread_struct {
        s390_fp_regs fp_regs;
        unsigned int  acrs[NUM_ACRS];
         unsigned long ksp;              /* kernel stack pointer             */
-        unsigned long user_seg;         /* HSTD                             */
        mm_segment_t mm_segment;
         unsigned long prot_addr;        /* address of protection-excep.     */
-        unsigned int error_code;        /* error-code of last prog-excep.   */
         unsigned int trap_no;
         per_struct per_info;
        /* Used to give failing instruction back to user for ieee exceptions */
@@ -128,28 +136,13 @@ struct stack_frame {
 
 #define ARCH_MIN_TASKALIGN     8
 
-#ifndef __s390x__
-# define __SWAPPER_PG_DIR __pa(&swapper_pg_dir[0]) + _SEGMENT_TABLE
-#else /* __s390x__ */
-# define __SWAPPER_PG_DIR __pa(&swapper_pg_dir[0]) + _REGION_TABLE
-#endif /* __s390x__ */
-
-#define INIT_THREAD {{0,{{0},{0},{0},{0},{0},{0},{0},{0},{0},{0},             \
-                           {0},{0},{0},{0},{0},{0}}},                         \
-                    {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},         \
-                    sizeof(init_stack) + (unsigned long) &init_stack,         \
-                    __SWAPPER_PG_DIR,                                         \
-                    {0},                                                      \
-                    0,0,0,                                                    \
-                    (per_struct) {{{{0,}}},0,0,0,0,{{0,}}},                   \
-                    0, 0                                                      \
-} 
+#define INIT_THREAD {                                                  \
+       .ksp = sizeof(init_stack) + (unsigned long) &init_stack,        \
+}
 
 /*
  * Do necessary setup to start up a new thread.
  */
-#ifndef __s390x__
-
 #define start_thread(regs, new_psw, new_stackp) do {            \
        set_fs(USER_DS);                                        \
        regs->psw.mask  = psw_user_bits;                        \
@@ -157,27 +150,10 @@ struct stack_frame {
         regs->gprs[15]  = new_stackp ;                          \
 } while (0)
 
-#else /* __s390x__ */
-
-#define start_thread(regs, new_psw, new_stackp) do {            \
-       set_fs(USER_DS);                                        \
-       regs->psw.mask  = psw_user_bits;                        \
-        regs->psw.addr  = new_psw;                              \
-        regs->gprs[15]  = new_stackp;                           \
-} while (0)
-
-#define start_thread31(regs, new_psw, new_stackp) do {          \
-       set_fs(USER_DS);                                        \
-       regs->psw.mask  = psw_user32_bits;                      \
-        regs->psw.addr  = new_psw;                              \
-        regs->gprs[15]  = new_stackp;                           \
-} while (0)
-
-#endif /* __s390x__ */
-
 /* Forward declaration, a strange C thing */
 struct task_struct;
 struct mm_struct;
+struct seq_file;
 
 /* Free all resources held by a thread. */
 extern void release_thread(struct task_struct *);
@@ -194,7 +170,7 @@ extern unsigned long thread_saved_pc(struct task_struct *t);
 /*
  * Print register of task into buffer. Used in fs/proc/array.c.
  */
-extern char *task_show_regs(struct task_struct *task, char *buffer);
+extern void task_show_regs(struct seq_file *m, struct task_struct *task);
 
 extern void show_registers(struct pt_regs *regs);
 extern void show_code(struct pt_regs *regs);