1 files changed, 90 insertions, 73 deletions

diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index c5cbc4bd8414..cbbedc63ba25 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -13,7 +13,6 @@
 #ifndef __ASM_S390_PROCESSOR_H
 #define __ASM_S390_PROCESSOR_H
 
-#include <asm/page.h>
 #include <asm/ptrace.h>
 
 #ifdef __KERNEL__
@@ -21,7 +20,7 @@
  * Default implementation of macro that returns current
  * instruction pointer ("program counter").
  */
-#define current_text_addr() ({ void *pc; __asm__("basr %0,0":"=a"(pc)); pc; })
+#define current_text_addr() ({ void *pc; asm("basr %0,0" : "=a" (pc)); pc; })
 
 /*
  *  CPU type and hardware bug flags. Kept separately for each CPU.
@@ -199,15 +198,13 @@ unsigned long get_wchan(struct task_struct *p);
 /*
  * Give up the time slice of the virtual PU.
  */
-#ifndef __s390x__
-# define cpu_relax()    asm volatile ("diag 0,0,68" : : : "memory")
-#else /* __s390x__ */
-# define cpu_relax() \
-        do { \
-                if (MACHINE_HAS_DIAG44) \
-                        asm volatile ("diag 0,0,68" : : : "memory"); \
-        } while (0)
-#endif /* __s390x__ */
+static inline void cpu_relax(void)
+{
+        if (MACHINE_HAS_DIAG44)
+                asm volatile("diag 0,0,68" : : : "memory");
+        else
+                barrier();
+}
 
 /*
  * Set PSW to specified value.
@@ -215,9 +212,9 @@ unsigned long get_wchan(struct task_struct *p);
 static inline void __load_psw(psw_t psw)
 {
 #ifndef __s390x__
-        asm volatile ("lpsw  0(%0)" : : "a" (&psw), "m" (psw) : "cc" );
+        asm volatile("lpsw  0(%0)" : : "a" (&psw), "m" (psw) : "cc");
 #else
-        asm volatile ("lpswe 0(%0)" : : "a" (&psw), "m" (psw) : "cc" );
+        asm volatile("lpswe 0(%0)" : : "a" (&psw), "m" (psw) : "cc");
 #endif
 }
 
@@ -234,20 +231,20 @@ static inline void __load_psw_mask (unsigned long mask)
         psw.mask = mask;
 
 #ifndef __s390x__
-        asm volatile (
-                "    basr %0,0\n"
-                "0:  ahi  %0,1f-0b\n"
-                "    st   %0,4(%1)\n"
-                "    lpsw 0(%1)\n"
+        asm volatile(
+                "       basr    %0,0\n"
+                "0:     ahi     %0,1f-0b\n"
+                "       st      %0,4(%1)\n"
+                "       lpsw    0(%1)\n"
                 "1:"
-                : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc" );
+                : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc");
 #else /* __s390x__ */
-        asm volatile (
-                "    larl  %0,1f\n"
-                "    stg   %0,8(%1)\n"
-                "    lpswe 0(%1)\n"
+        asm volatile(
+                "       larl    %0,1f\n"
+                "       stg     %0,8(%1)\n"
+                "       lpswe   0(%1)\n"
                 "1:"
-                : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc" );
+                : "=&d" (addr) : "a" (&psw), "m" (psw) : "memory", "cc");
 #endif /* __s390x__ */
 }
  
@@ -276,56 +273,57 @@ static inline void disabled_wait(unsigned long code)
          * the processor is dead afterwards
          */
 #ifndef __s390x__
-        asm volatile ("    stctl 0,0,0(%2)\n"
-                      "    ni    0(%2),0xef\n" /* switch off protection */
-                      "    lctl  0,0,0(%2)\n"
-                      "    stpt  0xd8\n"       /* store timer */
-                      "    stckc 0xe0\n"       /* store clock comparator */
-                      "    stpx  0x108\n"      /* store prefix register */
-                      "    stam  0,15,0x120\n" /* store access registers */
-                      "    std   0,0x160\n"    /* store f0 */
-                      "    std   2,0x168\n"    /* store f2 */
-                      "    std   4,0x170\n"    /* store f4 */
-                      "    std   6,0x178\n"    /* store f6 */
-                      "    stm   0,15,0x180\n" /* store general registers */
-                      "    stctl 0,15,0x1c0\n" /* store control registers */
-                      "    oi    0x1c0,0x10\n" /* fake protection bit */
-                      "    lpsw 0(%1)"
-                      : "=m" (ctl_buf)
-                      : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc" );
+        asm volatile(
+                "       stctl   0,0,0(%2)\n"
+                "       ni      0(%2),0xef\n"   /* switch off protection */
+                "       lctl    0,0,0(%2)\n"
+                "       stpt    0xd8\n"         /* store timer */
+                "       stckc   0xe0\n"         /* store clock comparator */
+                "       stpx    0x108\n"        /* store prefix register */
+                "       stam    0,15,0x120\n"   /* store access registers */
+                "       std     0,0x160\n"      /* store f0 */
+                "       std     2,0x168\n"      /* store f2 */
+                "       std     4,0x170\n"      /* store f4 */
+                "       std     6,0x178\n"      /* store f6 */
+                "       stm     0,15,0x180\n"   /* store general registers */
+                "       stctl   0,15,0x1c0\n"   /* store control registers */
+                "       oi      0x1c0,0x10\n"   /* fake protection bit */
+                "       lpsw    0(%1)"
+                : "=m" (ctl_buf)
+                : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc");
 #else /* __s390x__ */
-        asm volatile ("    stctg 0,0,0(%2)\n"
-                      "    ni    4(%2),0xef\n" /* switch off protection */
-                      "    lctlg 0,0,0(%2)\n"
-                      "    lghi  1,0x1000\n"
-                      "    stpt  0x328(1)\n"      /* store timer */
-                      "    stckc 0x330(1)\n"      /* store clock comparator */
-                      "    stpx  0x318(1)\n"      /* store prefix register */
-                      "    stam  0,15,0x340(1)\n" /* store access registers */
-                      "    stfpc 0x31c(1)\n"      /* store fpu control */
-                      "    std   0,0x200(1)\n"    /* store f0 */
-                      "    std   1,0x208(1)\n"    /* store f1 */
-                      "    std   2,0x210(1)\n"    /* store f2 */
-                      "    std   3,0x218(1)\n"    /* store f3 */
-                      "    std   4,0x220(1)\n"    /* store f4 */
-                      "    std   5,0x228(1)\n"    /* store f5 */
-                      "    std   6,0x230(1)\n"    /* store f6 */
-                      "    std   7,0x238(1)\n"    /* store f7 */
-                      "    std   8,0x240(1)\n"    /* store f8 */
-                      "    std   9,0x248(1)\n"    /* store f9 */
-                      "    std   10,0x250(1)\n"   /* store f10 */
-                      "    std   11,0x258(1)\n"   /* store f11 */
-                      "    std   12,0x260(1)\n"   /* store f12 */
-                      "    std   13,0x268(1)\n"   /* store f13 */
-                      "    std   14,0x270(1)\n"   /* store f14 */
-                      "    std   15,0x278(1)\n"   /* store f15 */
-                      "    stmg  0,15,0x280(1)\n" /* store general registers */
-                      "    stctg 0,15,0x380(1)\n" /* store control registers */
-                      "    oi    0x384(1),0x10\n" /* fake protection bit */
-                      "    lpswe 0(%1)"
-                      : "=m" (ctl_buf)
-                      : "a" (&dw_psw), "a" (&ctl_buf),
-                        "m" (dw_psw) : "cc", "0", "1");
+        asm volatile(
+                "       stctg   0,0,0(%2)\n"
+                "       ni      4(%2),0xef\n"   /* switch off protection */
+                "       lctlg   0,0,0(%2)\n"
+                "       lghi    1,0x1000\n"
+                "       stpt    0x328(1)\n"     /* store timer */
+                "       stckc   0x330(1)\n"     /* store clock comparator */
+                "       stpx    0x318(1)\n"     /* store prefix register */
+                "       stam    0,15,0x340(1)\n"/* store access registers */
+                "       stfpc   0x31c(1)\n"     /* store fpu control */
+                "       std     0,0x200(1)\n"   /* store f0 */
+                "       std     1,0x208(1)\n"   /* store f1 */
+                "       std     2,0x210(1)\n"   /* store f2 */
+                "       std     3,0x218(1)\n"   /* store f3 */
+                "       std     4,0x220(1)\n"   /* store f4 */
+                "       std     5,0x228(1)\n"   /* store f5 */
+                "       std     6,0x230(1)\n"   /* store f6 */
+                "       std     7,0x238(1)\n"   /* store f7 */
+                "       std     8,0x240(1)\n"   /* store f8 */
+                "       std     9,0x248(1)\n"   /* store f9 */
+                "       std     10,0x250(1)\n"  /* store f10 */
+                "       std     11,0x258(1)\n"  /* store f11 */
+                "       std     12,0x260(1)\n"  /* store f12 */
+                "       std     13,0x268(1)\n"  /* store f13 */
+                "       std     14,0x270(1)\n"  /* store f14 */
+                "       std     15,0x278(1)\n"  /* store f15 */
+                "       stmg    0,15,0x280(1)\n"/* store general registers */
+                "       stctg   0,15,0x380(1)\n"/* store control registers */
+                "       oi      0x384(1),0x10\n"/* fake protection bit */
+                "       lpswe   0(%1)"
+                : "=m" (ctl_buf)
+                : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0");
 #endif /* __s390x__ */
 }
 
@@ -339,6 +337,25 @@ struct notifier_block;
 int register_idle_notifier(struct notifier_block *nb);
 int unregister_idle_notifier(struct notifier_block *nb);
 
+#define ARCH_LOW_ADDRESS_LIMIT  0x7fffffffUL
+
+#endif
+
+/*
+ * Helper macro for exception table entries
+ */
+#ifndef __s390x__
+#define EX_TABLE(_fault,_target)                        \
+        ".section __ex_table,\"a\"\n"                   \
+        "       .align 4\n"                             \
+        "       .long  " #_fault "," #_target "\n"      \
+        ".previous\n"
+#else
+#define EX_TABLE(_fault,_target)                        \
+        ".section __ex_table,\"a\"\n"                   \
+        "       .align 8\n"                             \
+        "       .quad  " #_fault "," #_target "\n"      \
+        ".previous\n"
 #endif
 
 #endif                                 /* __ASM_S390_PROCESSOR_H           */