diff options
Diffstat (limited to 'arch/s390/kernel/signal.c')
| -rw-r--r-- | arch/s390/kernel/signal.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index 058e372bada1..0e905cb7604a 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -157,7 +157,7 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs) current->thread.fp_regs.fpc &= FPC_VALID_MASK; restore_fp_regs(¤t->thread.fp_regs); - regs->svc_code = 0; /* disable syscall checks */ + clear_thread_flag(TIF_SYSCALL); /* No longer in a system call */ return 0; } @@ -426,13 +426,14 @@ void do_signal(struct pt_regs *regs) * the debugger may change all our registers, including the system * call information. */ - current_thread_info()->system_call = regs->svc_code; + current_thread_info()->system_call = + test_thread_flag(TIF_SYSCALL) ? regs->svc_code : 0; signr = get_signal_to_deliver(&info, &ka, regs, NULL); - regs->svc_code = current_thread_info()->system_call; if (signr > 0) { /* Whee! Actually deliver the signal. */ - if (regs->svc_code > 0) { + if (current_thread_info()->system_call) { + regs->svc_code = current_thread_info()->system_call; /* Check for system call restarting. */ switch (regs->gprs[2]) { case -ERESTART_RESTARTBLOCK: @@ -453,7 +454,7 @@ void do_signal(struct pt_regs *regs) break; } /* No longer in a system call */ - regs->svc_code = 0; + clear_thread_flag(TIF_SYSCALL); } if ((is_compat_task() ? @@ -478,7 +479,8 @@ void do_signal(struct pt_regs *regs) } /* No handlers present - check for system call restart */ - if (regs->svc_code > 0) { + if (current_thread_info()->system_call) { + regs->svc_code = current_thread_info()->system_call; switch (regs->gprs[2]) { case -ERESTART_RESTARTBLOCK: /* Restart with sys_restart_syscall */ @@ -489,7 +491,10 @@ void do_signal(struct pt_regs *regs) case -ERESTARTNOINTR: /* Restart system call with magic TIF bit. */ regs->gprs[2] = regs->orig_gpr2; - set_thread_flag(TIF_RESTART_SVC); + set_thread_flag(TIF_SYSCALL); + break; + default: + clear_thread_flag(TIF_SYSCALL); break; } } |