ia64: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index 680b737..3637e03 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -39,14 +39,6 @@
# define GET_SIGSET(k,u) __get_user((k)->sig[0], &(u)->sig[0])
#endif
-asmlinkage long
-sys_sigaltstack (const stack_t __user *uss, stack_t __user *uoss, long arg2,
- long arg3, long arg4, long arg5, long arg6, long arg7,
- struct pt_regs regs)
-{
- return do_sigaltstack(uss, uoss, regs.r12);
-}
-
static long
restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr)
{
@@ -208,11 +200,8 @@
printk("SIG return (%s:%d): sp=%lx ip=%lx\n",
current->comm, current->pid, scr->pt.r12, scr->pt.cr_iip);
#endif
- /*
- * It is more difficult to avoid calling this function than to
- * call it and ignore errors.
- */
- do_sigaltstack(&sc->sc_stack, NULL, scr->pt.r12);
+ if (restore_altstack(&sc->sc_stack))
+ goto give_sigsegv;
return retval;
give_sigsegv:
@@ -376,9 +365,7 @@
err |= copy_siginfo_to_user(&frame->info, info);
- err |= __put_user(current->sas_ss_sp, &frame->sc.sc_stack.ss_sp);
- err |= __put_user(current->sas_ss_size, &frame->sc.sc_stack.ss_size);
- err |= __put_user(sas_ss_flags(scr->pt.r12), &frame->sc.sc_stack.ss_flags);
+ err |= __save_altstack(&frame->sc.sc_stack, scr->pt.r12);
err |= setup_sigcontext(&frame->sc, set, scr);
if (unlikely(err))