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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-30 11:07:16 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-30 11:07:16 -0800 |
commit | f1ba3bc7b97ad0cc5886e5dadf4defba68f37819 (patch) | |
tree | 733ec0fb6ab2f15732eb96b1fdd0e027ee3d4b92 /arch/s390/include | |
parent | 95c5e1f1e6e1788cc8b9acbe9379ae395ef64958 (diff) | |
parent | abd942194dcba2fa9d24d547b8acd4ef052eaf73 (diff) | |
download | blackbird-obmc-linux-f1ba3bc7b97ad0cc5886e5dadf4defba68f37819.tar.gz blackbird-obmc-linux-f1ba3bc7b97ad0cc5886e5dadf4defba68f37819.zip |
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[S390] Update default configuration.
[S390] Fix alignment of initial kernel stack.
[S390] pgtable.h: Fix oops in unmap_vmas for KVM processes
[S390] fix/cleanup sched_clock
[S390] fix system call parameter functions.
Diffstat (limited to 'arch/s390/include')
-rw-r--r-- | arch/s390/include/asm/pgtable.h | 2 | ||||
-rw-r--r-- | arch/s390/include/asm/ptrace.h | 2 | ||||
-rw-r--r-- | arch/s390/include/asm/syscall.h | 28 |
3 files changed, 17 insertions, 15 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) static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { - if (mm->context.has_pgste) - ptep_rcp_copy(ptep); pte_val(*ptep) = _PAGE_TYPE_EMPTY; if (mm->context.noexec) 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 560ce8561dfd..5396f9f12263 100644 --- a/arch/s390/include/asm/ptrace.h +++ b/arch/s390/include/asm/ptrace.h @@ -321,8 +321,8 @@ struct pt_regs psw_t psw; unsigned long gprs[NUM_GPRS]; unsigned long orig_gpr2; + unsigned short svcnr; unsigned short ilc; - unsigned short trap; }; #endif 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 @@ static inline long syscall_get_nr(struct task_struct *task, struct pt_regs *regs) { - if (regs->trap != __LC_SVC_OLD_PSW) - return -1; - return regs->gprs[2]; + return regs->svcnr ? regs->svcnr : -1; } static inline void syscall_rollback(struct task_struct *task, @@ -52,18 +50,20 @@ static inline void syscall_get_arguments(struct task_struct *task, unsigned int i, unsigned int n, unsigned long *args) { + unsigned long mask = -1UL; + BUG_ON(i + n > 6); #ifdef CONFIG_COMPAT - if (test_tsk_thread_flag(task, TIF_31BIT)) { - if (i + n == 6) - args[--n] = (u32) regs->args[0]; - while (n-- > 0) - args[n] = (u32) regs->gprs[2 + i + n]; - } + if (test_tsk_thread_flag(task, TIF_31BIT)) + mask = 0xffffffff; #endif if (i + n == 6) - args[--n] = regs->args[0]; - memcpy(args, ®s->gprs[2 + i], n * sizeof(args[0])); + args[--n] = regs->args[0] & mask; + while (n-- > 0) + if (i + n > 0) + args[n] = regs->gprs[2 + i + n] & mask; + if (i == 0) + args[0] = regs->orig_gpr2 & mask; } static inline void syscall_set_arguments(struct task_struct *task, @@ -74,7 +74,11 @@ static inline void syscall_set_arguments(struct task_struct *task, BUG_ON(i + n > 6); if (i + n == 6) regs->args[0] = args[--n]; - memcpy(®s->gprs[2 + i], args, n * sizeof(args[0])); + while (n-- > 0) + if (i + n > 0) + regs->gprs[2 + i + n] = args[n]; + if (i == 0) + regs->orig_gpr2 = args[0]; } #endif /* _ASM_SYSCALL_H */ |