ppc64: mask top 4 bytes of si_code

arch/ppc64/kernel/signal.c

@@ -455,7 +455,7 @@ handle_signal(unsigned long sig, siginfo_t *info, sigset_t *oldset,
 		    || __put_user(&rt_sf->info, &rt_sf->pinfo)
 		    || __put_user(&rt_sf->uc, &rt_sf->puc)
 		    /* Put the siginfo */
-		    || __copy_to_user(&rt_sf->info, info, sizeof(*info))
+		    || copy_siginfo_to_user(&rt_sf->info, info)
 		    /* Create the ucontext */
 		    || __put_user(0, &rt_sf->uc.uc_flags)
 		    || __put_user(0, &rt_sf->uc.uc_link)

arch/ppc64/kernel/signal32.c

@@ -773,7 +773,8 @@ siginfo64to32(siginfo_t32 *d, siginfo_t *s)
 	memset (d, 0, sizeof(siginfo_t32));
 	d->si_signo = s->si_signo;
 	d->si_errno = s->si_errno;
-	d->si_code = s->si_code;
+	/* XXX why dont we just implement copy_siginfo_to_user32? - Anton */
+	d->si_code = s->si_code & 0xffff;
 	if (s->si_signo >= SIGRTMIN) {
 		d->si_pid = s->si_pid;
 		d->si_uid = s->si_uid;