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-rw-r--r--arch/s390/include/asm/pgtable.h2
-rw-r--r--arch/s390/include/asm/ptrace.h4
-rw-r--r--arch/s390/include/asm/syscall.h28
3 files changed, 17 insertions, 17 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 7fc76133b3e4..5caddd4f7bed 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -679,8 +679,6 @@ static inline void pmd_clear(pmd_t *pmd)
679 679
680static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) 680static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
681{ 681{
682 if (mm->context.has_pgste)
683 ptep_rcp_copy(ptep);
684 pte_val(*ptep) = _PAGE_TYPE_EMPTY; 682 pte_val(*ptep) = _PAGE_TYPE_EMPTY;
685 if (mm->context.noexec) 683 if (mm->context.noexec)
686 pte_val(ptep[PTRS_PER_PTE]) = _PAGE_TYPE_EMPTY; 684 pte_val(ptep[PTRS_PER_PTE]) = _PAGE_TYPE_EMPTY;
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index a7226f8143fb..5396f9f12263 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -321,8 +321,8 @@ struct pt_regs
321 psw_t psw; 321 psw_t psw;
322 unsigned long gprs[NUM_GPRS]; 322 unsigned long gprs[NUM_GPRS];
323 unsigned long orig_gpr2; 323 unsigned long orig_gpr2;
324 unsigned short svcnr;
324 unsigned short ilc; 325 unsigned short ilc;
325 unsigned short trap;
326}; 326};
327#endif 327#endif
328 328
@@ -486,8 +486,6 @@ struct task_struct;
486extern void user_enable_single_step(struct task_struct *); 486extern void user_enable_single_step(struct task_struct *);
487extern void user_disable_single_step(struct task_struct *); 487extern void user_disable_single_step(struct task_struct *);
488 488
489#define __ARCH_WANT_COMPAT_SYS_PTRACE
490
491#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) 489#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
492#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN) 490#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
493#define user_stack_pointer(regs)((regs)->gprs[15]) 491#define user_stack_pointer(regs)((regs)->gprs[15])
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index 6e623971fbb9..2429b87eb28d 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -17,9 +17,7 @@
17static inline long syscall_get_nr(struct task_struct *task, 17static inline long syscall_get_nr(struct task_struct *task,
18 struct pt_regs *regs) 18 struct pt_regs *regs)
19{ 19{
20 if (regs->trap != __LC_SVC_OLD_PSW) 20 return regs->svcnr ? regs->svcnr : -1;
21 return -1;
22 return regs->gprs[2];
23} 21}
24 22
25static inline void syscall_rollback(struct task_struct *task, 23static inline void syscall_rollback(struct task_struct *task,
@@ -52,18 +50,20 @@ static inline void syscall_get_arguments(struct task_struct *task,
52 unsigned int i, unsigned int n, 50 unsigned int i, unsigned int n,
53 unsigned long *args) 51 unsigned long *args)
54{ 52{
53 unsigned long mask = -1UL;
54
55 BUG_ON(i + n > 6); 55 BUG_ON(i + n > 6);
56#ifdef CONFIG_COMPAT 56#ifdef CONFIG_COMPAT
57 if (test_tsk_thread_flag(task, TIF_31BIT)) { 57 if (test_tsk_thread_flag(task, TIF_31BIT))
58 if (i + n == 6) 58 mask = 0xffffffff;
59 args[--n] = (u32) regs->args[0];
60 while (n-- > 0)
61 args[n] = (u32) regs->gprs[2 + i + n];
62 }
63#endif 59#endif
64 if (i + n == 6) 60 if (i + n == 6)
65 args[--n] = regs->args[0]; 61 args[--n] = regs->args[0] & mask;
66 memcpy(args, &regs->gprs[2 + i], n * sizeof(args[0])); 62 while (n-- > 0)
63 if (i + n > 0)
64 args[n] = regs->gprs[2 + i + n] & mask;
65 if (i == 0)
66 args[0] = regs->orig_gpr2 & mask;
67} 67}
68 68
69static inline void syscall_set_arguments(struct task_struct *task, 69static inline void syscall_set_arguments(struct task_struct *task,
@@ -74,7 +74,11 @@ static inline void syscall_set_arguments(struct task_struct *task,
74 BUG_ON(i + n > 6); 74 BUG_ON(i + n > 6);
75 if (i + n == 6) 75 if (i + n == 6)
76 regs->args[0] = args[--n]; 76 regs->args[0] = args[--n];
77 memcpy(&regs->gprs[2 + i], args, n * sizeof(args[0])); 77 while (n-- > 0)
78 if (i + n > 0)
79 regs->gprs[2 + i + n] = args[n];
80 if (i == 0)
81 regs->orig_gpr2 = args[0];
78} 82}
79 83
80#endif /* _ASM_SYSCALL_H */ 84#endif /* _ASM_SYSCALL_H */