diff --git a/[refs] b/[refs]
index 5d07ea0dc6e1..7991c1d24457 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1cb44eb837eafadb7c91c7c8b2aba81cc3e9fe44
+refs/heads/master: b774cc5cb6b3b53b276bb7d968e3579afc2922c5
diff --git a/trunk/arch/s390/Kconfig b/trunk/arch/s390/Kconfig
index bcdcf31fa672..b5ea38c25647 100644
--- a/trunk/arch/s390/Kconfig
+++ b/trunk/arch/s390/Kconfig
@@ -140,13 +140,6 @@ config S390
 	select HAVE_MOD_ARCH_SPECIFIC
 	select MODULES_USE_ELF_RELA
 	select CLONE_BACKWARDS2
-	select GENERIC_SIGALTSTACK
-	select GENERIC_COMPAT_RT_SIGACTION
-	select GENERIC_COMPAT_RT_SIGQUEUEINFO
-	select GENERIC_COMPAT_RT_SIGPROCMASK
-	select GENERIC_COMPAT_RT_SIGPENDING
-	select OLD_SIGSUSPEND3
-	select OLD_SIGACTION
 
 config SCHED_OMIT_FRAME_POINTER
 	def_bool y
@@ -256,7 +249,6 @@ config COMPAT
 	depends on 64BIT
 	select COMPAT_BINFMT_ELF if BINFMT_ELF
 	select ARCH_WANT_OLD_COMPAT_IPC
-	select COMPAT_OLD_SIGACTION
 	help
 	  Select this option if you want to enable your system kernel to
 	  handle system-calls from ELF binaries for 31 bit ESA.  This option
diff --git a/trunk/arch/s390/include/asm/signal.h b/trunk/arch/s390/include/asm/signal.h
index abf9e5735943..d26e30e31656 100644
--- a/trunk/arch/s390/include/asm/signal.h
+++ b/trunk/arch/s390/include/asm/signal.h
@@ -21,5 +21,12 @@ typedef struct {
         unsigned long sig[_NSIG_WORDS];
 } sigset_t;
 
+struct old_sigaction {
+        __sighandler_t sa_handler;
+        old_sigset_t sa_mask;
+        unsigned long sa_flags;
+        void (*sa_restorer)(void);
+};
+
 #define __ARCH_HAS_SA_RESTORER
 #endif
diff --git a/trunk/arch/s390/kernel/compat_linux.c b/trunk/arch/s390/kernel/compat_linux.c
index 19f26de27fae..65cca95843e1 100644
--- a/trunk/arch/s390/kernel/compat_linux.c
+++ b/trunk/arch/s390/kernel/compat_linux.c
@@ -352,6 +352,86 @@ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned
 		return sys_ftruncate(fd, (high << 32) | low);
 }
 
+asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid,
+				struct compat_timespec __user *interval)
+{
+	struct timespec t;
+	int ret;
+	mm_segment_t old_fs = get_fs ();
+	
+	set_fs (KERNEL_DS);
+	ret = sys_sched_rr_get_interval(pid,
+					(struct timespec __force __user *) &t);
+	set_fs (old_fs);
+	if (put_compat_timespec(&t, interval))
+		return -EFAULT;
+	return ret;
+}
+
+asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
+			compat_sigset_t __user *oset, size_t sigsetsize)
+{
+	sigset_t s;
+	compat_sigset_t s32;
+	int ret;
+	mm_segment_t old_fs = get_fs();
+	
+	if (set) {
+		if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
+			return -EFAULT;
+		s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
+	}
+	set_fs (KERNEL_DS);
+	ret = sys_rt_sigprocmask(how,
+				 set ? (sigset_t __force __user *) &s : NULL,
+				 oset ? (sigset_t __force __user *) &s : NULL,
+				 sigsetsize);
+	set_fs (old_fs);
+	if (ret) return ret;
+	if (oset) {
+		s32.sig[1] = (s.sig[0] >> 32);
+		s32.sig[0] = s.sig[0];
+		if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
+			return -EFAULT;
+	}
+	return 0;
+}
+
+asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
+				size_t sigsetsize)
+{
+	sigset_t s;
+	compat_sigset_t s32;
+	int ret;
+	mm_segment_t old_fs = get_fs();
+		
+	set_fs (KERNEL_DS);
+	ret = sys_rt_sigpending((sigset_t __force __user *) &s, sigsetsize);
+	set_fs (old_fs);
+	if (!ret) {
+		s32.sig[1] = (s.sig[0] >> 32);
+		s32.sig[0] = s.sig[0];
+		if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
+			return -EFAULT;
+	}
+	return ret;
+}
+
+asmlinkage long
+sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
+{
+	siginfo_t info;
+	int ret;
+	mm_segment_t old_fs = get_fs();
+	
+	if (copy_siginfo_from_user32(&info, uinfo))
+		return -EFAULT;
+	set_fs (KERNEL_DS);
+	ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __force __user *) &info);
+	set_fs (old_fs);
+	return ret;
+}
+
 asmlinkage long sys32_pread64(unsigned int fd, char __user *ubuf,
 				size_t count, u32 poshi, u32 poslo)
 {
diff --git a/trunk/arch/s390/kernel/compat_linux.h b/trunk/arch/s390/kernel/compat_linux.h
index 00d92a5a6f6c..d4d0239970ac 100644
--- a/trunk/arch/s390/kernel/compat_linux.h
+++ b/trunk/arch/s390/kernel/compat_linux.h
@@ -17,6 +17,13 @@ struct ipc_kludge_32 {
         __s32   msgtyp;
 };
 
+struct old_sigaction32 {
+       __u32			sa_handler;	/* Really a pointer, but need to deal with 32 bits */
+       compat_old_sigset_t	sa_mask;	/* A 32 bit mask */
+       __u32			sa_flags;
+       __u32			sa_restorer;	/* Another 32 bit pointer */
+};
+
 /* asm/sigcontext.h */
 typedef union
 {
@@ -61,12 +68,24 @@ struct sigcontext32
 };
 
 /* asm/signal.h */
+struct sigaction32 {
+	__u32		sa_handler;		/* pointer */
+	__u32		sa_flags;
+        __u32		sa_restorer;		/* pointer */
+	compat_sigset_t	sa_mask;        /* mask last for extensibility */
+};
+
+typedef struct {
+	__u32			ss_sp;		/* pointer */
+	int			ss_flags;
+	compat_size_t		ss_size;
+} stack_t32;
 
 /* asm/ucontext.h */
 struct ucontext32 {
 	__u32			uc_flags;
 	__u32			uc_link;	/* pointer */	
-	compat_stack_t		uc_stack;
+	stack_t32		uc_stack;
 	_sigregs32		uc_mcontext;
 	compat_sigset_t		uc_sigmask;	/* mask last for extensibility */
 };
@@ -74,6 +93,8 @@ struct ucontext32 {
 struct stat64_emu31;
 struct mmap_arg_struct_emu31;
 struct fadvise64_64_args;
+struct old_sigaction32;
+struct old_sigaction32;
 
 long sys32_chown16(const char __user * filename, u16 user, u16 group);
 long sys32_lchown16(const char __user * filename, u16 user, u16 group);
@@ -98,6 +119,12 @@ long sys32_ipc(u32 call, int first, int second, int third, u32 ptr);
 long sys32_truncate64(const char __user * path, unsigned long high,
 		      unsigned long low);
 long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low);
+long sys32_sched_rr_get_interval(compat_pid_t pid,
+				 struct compat_timespec __user *interval);
+long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
+			  compat_sigset_t __user *oset, size_t sigsetsize);
+long sys32_rt_sigpending(compat_sigset_t __user *set, size_t sigsetsize);
+long sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo);
 long sys32_init_module(void __user *umod, unsigned long len,
 		       const char __user *uargs);
 long sys32_delete_module(const char __user *name_user, unsigned int flags);
@@ -122,4 +149,9 @@ long sys32_read(unsigned int fd, char __user * buf, size_t count);
 long sys32_write(unsigned int fd, const char __user * buf, size_t count);
 long sys32_fadvise64(int fd, loff_t offset, size_t len, int advise);
 long sys32_fadvise64_64(struct fadvise64_64_args __user *args);
+long sys32_sigaction(int sig, const struct old_sigaction32 __user *act,
+		     struct old_sigaction32 __user *oact);
+long sys32_rt_sigaction(int sig, const struct sigaction32 __user *act,
+			struct sigaction32 __user *oact, size_t sigsetsize);
+long sys32_sigaltstack(const stack_t32 __user *uss, stack_t32 __user *uoss);
 #endif /* _ASM_S390X_S390_H */
diff --git a/trunk/arch/s390/kernel/compat_signal.c b/trunk/arch/s390/kernel/compat_signal.c
index 3e71194c1902..593fcc9253fc 100644
--- a/trunk/arch/s390/kernel/compat_signal.c
+++ b/trunk/arch/s390/kernel/compat_signal.c
@@ -157,6 +157,122 @@ int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
 	return err;
 }
 
+asmlinkage long
+sys32_sigaction(int sig, const struct old_sigaction32 __user *act,
+		 struct old_sigaction32 __user *oact)
+{
+        struct k_sigaction new_ka, old_ka;
+	unsigned long sa_handler, sa_restorer;
+        int ret;
+
+        if (act) {
+		compat_old_sigset_t mask;
+		if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+		    __get_user(sa_handler, &act->sa_handler) ||
+		    __get_user(sa_restorer, &act->sa_restorer) ||
+		    __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+		    __get_user(mask, &act->sa_mask))
+			return -EFAULT;
+		new_ka.sa.sa_handler = (__sighandler_t) sa_handler;
+		new_ka.sa.sa_restorer = (void (*)(void)) sa_restorer;
+		siginitset(&new_ka.sa.sa_mask, mask);
+        }
+
+        ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+	if (!ret && oact) {
+		sa_handler = (unsigned long) old_ka.sa.sa_handler;
+		sa_restorer = (unsigned long) old_ka.sa.sa_restorer;
+		if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+		    __put_user(sa_handler, &oact->sa_handler) ||
+		    __put_user(sa_restorer, &oact->sa_restorer) ||
+		    __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
+		    __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
+			return -EFAULT;
+        }
+
+	return ret;
+}
+
+asmlinkage long
+sys32_rt_sigaction(int sig, const struct sigaction32 __user *act,
+	   struct sigaction32 __user *oact,  size_t sigsetsize)
+{
+	struct k_sigaction new_ka, old_ka;
+	unsigned long sa_handler;
+	int ret;
+	compat_sigset_t set32;
+
+	/* XXX: Don't preclude handling different sized sigset_t's.  */
+	if (sigsetsize != sizeof(compat_sigset_t))
+		return -EINVAL;
+
+	if (act) {
+		ret = get_user(sa_handler, &act->sa_handler);
+		ret |= __copy_from_user(&set32, &act->sa_mask,
+					sizeof(compat_sigset_t));
+		new_ka.sa.sa_mask.sig[0] =
+			set32.sig[0] | (((long)set32.sig[1]) << 32);
+		ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
+		
+		if (ret)
+			return -EFAULT;
+		new_ka.sa.sa_handler = (__sighandler_t) sa_handler;
+	}
+
+	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+	if (!ret && oact) {
+		set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32);
+		set32.sig[0] = old_ka.sa.sa_mask.sig[0];
+		ret = put_user((unsigned long)old_ka.sa.sa_handler, &oact->sa_handler);
+		ret |= __copy_to_user(&oact->sa_mask, &set32,
+				      sizeof(compat_sigset_t));
+		ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
+	}
+
+	return ret;
+}
+
+asmlinkage long
+sys32_sigaltstack(const stack_t32 __user *uss, stack_t32 __user *uoss)
+{
+	struct pt_regs *regs = task_pt_regs(current);
+	stack_t kss, koss;
+	unsigned long ss_sp;
+	int ret, err = 0;
+	mm_segment_t old_fs = get_fs();
+
+	if (uss) {
+		if (!access_ok(VERIFY_READ, uss, sizeof(*uss)))
+			return -EFAULT;
+		err |= __get_user(ss_sp, &uss->ss_sp);
+		err |= __get_user(kss.ss_size, &uss->ss_size);
+		err |= __get_user(kss.ss_flags, &uss->ss_flags);
+		if (err)
+			return -EFAULT;
+		kss.ss_sp = (void __user *) ss_sp;
+	}
+
+	set_fs (KERNEL_DS);
+	ret = do_sigaltstack((stack_t __force __user *) (uss ? &kss : NULL),
+			     (stack_t __force __user *) (uoss ? &koss : NULL),
+			     regs->gprs[15]);
+	set_fs (old_fs);
+
+	if (!ret && uoss) {
+		if (!access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)))
+			return -EFAULT;
+		ss_sp = (unsigned long) koss.ss_sp;
+		err |= __put_user(ss_sp, &uoss->ss_sp);
+		err |= __put_user(koss.ss_size, &uoss->ss_size);
+		err |= __put_user(koss.ss_flags, &uoss->ss_flags);
+		if (err)
+			return -EFAULT;
+	}
+	return ret;
+}
+
 static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs)
 {
 	_s390_regs_common32 regs32;
@@ -264,6 +380,10 @@ asmlinkage long sys32_rt_sigreturn(void)
 	struct pt_regs *regs = task_pt_regs(current);
 	rt_sigframe32 __user *frame = (rt_sigframe32 __user *)regs->gprs[15];
 	sigset_t set;
+	stack_t st;
+	__u32 ss_sp;
+	int err;
+	mm_segment_t old_fs = get_fs();
 
 	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
 		goto badframe;
@@ -274,8 +394,15 @@ asmlinkage long sys32_rt_sigreturn(void)
 		goto badframe;
 	if (restore_sigregs_gprs_high(regs, frame->gprs_high))
 		goto badframe;
-	if (compat_restore_altstack(&frame->uc.uc_stack))
+	err = __get_user(ss_sp, &frame->uc.uc_stack.ss_sp);
+	st.ss_sp = compat_ptr(ss_sp);
+	err |= __get_user(st.ss_size, &frame->uc.uc_stack.ss_size);
+	err |= __get_user(st.ss_flags, &frame->uc.uc_stack.ss_flags);
+	if (err)
 		goto badframe; 
+	set_fs (KERNEL_DS);
+	do_sigaltstack((stack_t __force __user *)&st, NULL, regs->gprs[15]);
+	set_fs (old_fs);
 	return regs->gprs[2];
 badframe:
 	force_sig(SIGSEGV, current);
@@ -403,7 +530,10 @@ static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info,
 	/* Create the ucontext.  */
 	err |= __put_user(UC_EXTENDED, &frame->uc.uc_flags);
 	err |= __put_user(0, &frame->uc.uc_link);
-	err |= __compat_save_altstack(&frame->uc.uc_stack, regs->gprs[15]);
+	err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
+	err |= __put_user(sas_ss_flags(regs->gprs[15]),
+	                  &frame->uc.uc_stack.ss_flags);
+	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
 	err |= save_sigregs32(regs, &frame->uc.uc_mcontext);
 	err |= save_sigregs_gprs_high(regs, frame->gprs_high);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
diff --git a/trunk/arch/s390/kernel/compat_wrapper.S b/trunk/arch/s390/kernel/compat_wrapper.S
index c14faf39ae36..9b9a805656b5 100644
--- a/trunk/arch/s390/kernel/compat_wrapper.S
+++ b/trunk/arch/s390/kernel/compat_wrapper.S
@@ -24,6 +24,12 @@ ENTRY(sys32_write_wrapper)
 	llgfr	%r4,%r4			# size_t
 	jg	sys32_write		# branch to system call
 
+ENTRY(sys32_open_wrapper)
+	llgtr	%r2,%r2			# const char *
+	lgfr	%r3,%r3			# int
+	lgfr	%r4,%r4			# int
+	jg	compat_sys_open		# branch to system call
+
 ENTRY(sys32_close_wrapper)
 	llgfr	%r2,%r2			# unsigned int
 	jg	sys_close		# branch to system call
@@ -220,6 +226,12 @@ ENTRY(sys32_dup2_wrapper)
 
 #sys32_setsid_wrapper			# void
 
+ENTRY(sys32_sigaction_wrapper)
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# const struct old_sigaction *
+	llgtr	%r4,%r4			# struct old_sigaction32 *
+	jg	sys32_sigaction		# branch to system call
+
 ENTRY(sys32_setreuid16_wrapper)
 	llgfr	%r2,%r2			# __kernel_old_uid_emu31_t
 	llgfr	%r3,%r3			# __kernel_old_uid_emu31_t
@@ -384,6 +396,17 @@ ENTRY(sys32_syslog_wrapper)
 	lgfr	%r4,%r4			# int
 	jg	sys_syslog		# branch to system call
 
+ENTRY(compat_sys_setitimer_wrapper)
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# struct itimerval_emu31 *
+	llgtr	%r4,%r4			# struct itimerval_emu31 *
+	jg	compat_sys_setitimer	# branch to system call
+
+ENTRY(compat_sys_getitimer_wrapper)
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# struct itimerval_emu31 *
+	jg	compat_sys_getitimer	# branch to system call
+
 ENTRY(compat_sys_newstat_wrapper)
 	llgtr	%r2,%r2			# char *
 	llgtr	%r3,%r3			# struct stat_emu31 *
@@ -401,6 +424,13 @@ ENTRY(compat_sys_newfstat_wrapper)
 
 #sys32_vhangup_wrapper			# void
 
+ENTRY(compat_sys_wait4_wrapper)
+	lgfr	%r2,%r2			# pid_t
+	llgtr	%r3,%r3			# unsigned int *
+	lgfr	%r4,%r4			# int
+	llgtr	%r5,%r5			# struct rusage *
+	jg	compat_sys_wait4	# branch to system call
+
 ENTRY(sys32_swapoff_wrapper)
 	llgtr	%r2,%r2			# const char *
 	jg	sys_swapoff		# branch to system call
@@ -444,6 +474,12 @@ ENTRY(sys32_mprotect_wrapper)
 	llgfr	%r4,%r4			# unsigned long
 	jg	sys_mprotect		# branch to system call
 
+ENTRY(compat_sys_sigprocmask_wrapper)
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# compat_old_sigset_t *
+	llgtr	%r4,%r4			# compat_old_sigset_t *
+	jg	compat_sys_sigprocmask		# branch to system call
+
 ENTRY(sys_init_module_wrapper)
 	llgtr	%r2,%r2			# void *
 	llgfr	%r3,%r3			# unsigned long
@@ -592,6 +628,11 @@ ENTRY(sys32_sched_get_priority_min_wrapper)
 	lgfr	%r2,%r2			# int
 	jg	sys_sched_get_priority_min	# branch to system call
 
+ENTRY(sys32_sched_rr_get_interval_wrapper)
+	lgfr	%r2,%r2			# pid_t
+	llgtr	%r3,%r3			# struct compat_timespec *
+	jg	sys32_sched_rr_get_interval	# branch to system call
+
 ENTRY(compat_sys_nanosleep_wrapper)
 	llgtr	%r2,%r2			# struct compat_timespec *
 	llgtr	%r3,%r3			# struct compat_timespec *
@@ -645,6 +686,43 @@ ENTRY(sys32_prctl_wrapper)
 
 #sys32_rt_sigreturn_wrapper		# done in rt_sigreturn_glue
 
+ENTRY(sys32_rt_sigaction_wrapper)
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# const struct sigaction_emu31 *
+	llgtr	%r4,%r4			# const struct sigaction_emu31 *
+	llgfr	%r5,%r5			# size_t
+	jg	sys32_rt_sigaction	# branch to system call
+
+ENTRY(sys32_rt_sigprocmask_wrapper)
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# old_sigset_emu31 *
+	llgtr	%r4,%r4			# old_sigset_emu31 *
+	llgfr	%r5,%r5			# size_t
+	jg	sys32_rt_sigprocmask	# branch to system call
+
+ENTRY(sys32_rt_sigpending_wrapper)
+	llgtr	%r2,%r2			# sigset_emu31 *
+	llgfr	%r3,%r3			# size_t
+	jg	sys32_rt_sigpending	# branch to system call
+
+ENTRY(compat_sys_rt_sigtimedwait_wrapper)
+	llgtr	%r2,%r2			# const sigset_emu31_t *
+	llgtr	%r3,%r3			# siginfo_emu31_t *
+	llgtr	%r4,%r4			# const struct compat_timespec *
+	llgfr	%r5,%r5			# size_t
+	jg	compat_sys_rt_sigtimedwait	# branch to system call
+
+ENTRY(sys32_rt_sigqueueinfo_wrapper)
+	lgfr	%r2,%r2			# int
+	lgfr	%r3,%r3			# int
+	llgtr	%r4,%r4			# siginfo_emu31_t *
+	jg	sys32_rt_sigqueueinfo	# branch to system call
+
+ENTRY(compat_sys_rt_sigsuspend_wrapper)
+	llgtr	%r2,%r2			# compat_sigset_t *
+	llgfr	%r3,%r3			# compat_size_t
+	jg	compat_sys_rt_sigsuspend
+
 ENTRY(sys32_pread64_wrapper)
 	llgfr	%r2,%r2			# unsigned int
 	llgtr	%r3,%r3			# char *
@@ -682,6 +760,11 @@ ENTRY(sys32_capset_wrapper)
 	llgtr	%r3,%r3			# const cap_user_data_t
 	jg	sys_capset		# branch to system call
 
+ENTRY(sys32_sigaltstack_wrapper)
+	llgtr	%r2,%r2			# const stack_emu31_t *
+	llgtr	%r3,%r3			# stack_emu31_t *
+	jg	sys32_sigaltstack
+
 ENTRY(sys32_sendfile_wrapper)
 	lgfr	%r2,%r2			# int
 	lgfr	%r3,%r3			# int
@@ -838,6 +921,16 @@ ENTRY(sys32_fstat64_wrapper)
 	llgtr	%r3,%r3			# struct stat64 *
 	jg	sys32_fstat64		# branch to system call
 
+ENTRY(compat_sys_futex_wrapper)
+	llgtr	%r2,%r2			# u32 *
+	lgfr	%r3,%r3			# int
+	lgfr	%r4,%r4			# int
+	llgtr	%r5,%r5			# struct compat_timespec *
+	llgtr	%r6,%r6			# u32 *
+	lgf	%r0,164(%r15)		# int
+	stg	%r0,160(%r15)
+	jg	compat_sys_futex	# branch to system call
+
 ENTRY(sys32_setxattr_wrapper)
 	llgtr	%r2,%r2			# char *
 	llgtr	%r3,%r3			# char *
@@ -1123,6 +1216,14 @@ ENTRY(sys32_remap_file_pages_wrapper)
 	llgfr	%r6,%r6			# unsigned long
 	jg	sys_remap_file_pages
 
+ENTRY(compat_sys_waitid_wrapper)
+	lgfr	%r2,%r2			# int
+	lgfr	%r3,%r3			# pid_t
+	llgtr	%r4,%r4			# siginfo_emu31_t *
+	lgfr	%r5,%r5			# int
+	llgtr	%r6,%r6			# struct rusage_emu31 *
+	jg	compat_sys_waitid
+
 ENTRY(compat_sys_kexec_load_wrapper)
 	llgfr	%r2,%r2			# unsigned long
 	llgfr	%r3,%r3			# unsigned long
@@ -1152,6 +1253,13 @@ ENTRY(sys_inotify_rm_watch_wrapper)
 	llgfr	%r3,%r3			# u32
 	jg	sys_inotify_rm_watch
 
+ENTRY(compat_sys_openat_wrapper)
+	llgfr	%r2,%r2			# unsigned int
+	llgtr	%r3,%r3			# const char *
+	lgfr	%r4,%r4			# int
+	lgfr	%r5,%r5			# int
+	jg	compat_sys_openat
+
 ENTRY(sys_mkdirat_wrapper)
 	lgfr	%r2,%r2			# int
 	llgtr	%r3,%r3			# const char *
@@ -1254,6 +1362,17 @@ ENTRY(sys_unshare_wrapper)
 	llgfr	%r2,%r2			# unsigned long
 	jg	sys_unshare
 
+ENTRY(compat_sys_set_robust_list_wrapper)
+	llgtr	%r2,%r2			# struct compat_robust_list_head *
+	llgfr	%r3,%r3			# size_t
+	jg	compat_sys_set_robust_list
+
+ENTRY(compat_sys_get_robust_list_wrapper)
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# compat_uptr_t_t *
+	llgtr	%r4,%r4			# compat_size_t *
+	jg	compat_sys_get_robust_list
+
 ENTRY(sys_splice_wrapper)
 	lgfr	%r2,%r2			# int
 	llgtr	%r3,%r3			# loff_t *
@@ -1339,6 +1458,18 @@ ENTRY(sys_timerfd_create_wrapper)
 	lgfr	%r3,%r3			# int
 	jg	sys_timerfd_create
 
+ENTRY(compat_sys_timerfd_settime_wrapper)
+	lgfr	%r2,%r2			# int
+	lgfr	%r3,%r3			# int
+	llgtr	%r4,%r4			# struct compat_itimerspec *
+	llgtr	%r5,%r5			# struct compat_itimerspec *
+	jg	compat_sys_timerfd_settime
+
+ENTRY(compat_sys_timerfd_gettime_wrapper)
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# struct compat_itimerspec *
+	jg	compat_sys_timerfd_gettime
+
 ENTRY(compat_sys_signalfd4_wrapper)
 	lgfr	%r2,%r2			# int
 	llgtr	%r3,%r3			# compat_sigset_t *
@@ -1419,6 +1550,13 @@ ENTRY(compat_sys_pwritev_wrapper)
 	llgfr	%r6,%r6			# u32
 	jg	compat_sys_pwritev	# branch to system call
 
+ENTRY(compat_sys_rt_tgsigqueueinfo_wrapper)
+	lgfr	%r2,%r2			# compat_pid_t
+	lgfr	%r3,%r3			# compat_pid_t
+	lgfr	%r4,%r4			# int
+	llgtr	%r5,%r5			# struct compat_siginfo *
+	jg	compat_sys_rt_tgsigqueueinfo_wrapper # branch to system call
+
 ENTRY(sys_perf_event_open_wrapper)
 	llgtr	%r2,%r2			# const struct perf_event_attr *
 	lgfr	%r3,%r3			# pid_t
@@ -1469,6 +1607,12 @@ ENTRY(sys_name_to_handle_at_wrapper)
 	lgfr	%r6,%r6			# int
 	jg	sys_name_to_handle_at
 
+ENTRY(compat_sys_open_by_handle_at_wrapper)
+	lgfr	%r2,%r2			# int
+	llgtr	%r3,%r3			# struct file_handle __user *
+	lgfr	%r4,%r4			# int
+	jg	compat_sys_open_by_handle_at
+
 ENTRY(compat_sys_clock_adjtime_wrapper)
 	lgfr	%r2,%r2			# clockid_t (int)
 	llgtr	%r3,%r3			# struct compat_timex __user *
diff --git a/trunk/arch/s390/kernel/entry.h b/trunk/arch/s390/kernel/entry.h
index c3a736a3ed44..2711936fe706 100644
--- a/trunk/arch/s390/kernel/entry.h
+++ b/trunk/arch/s390/kernel/entry.h
@@ -73,6 +73,10 @@ long sys_s390_fadvise64(int fd, u32 offset_high, u32 offset_low,
 long sys_s390_fadvise64_64(struct fadvise64_64_args __user *args);
 long sys_s390_fallocate(int fd, int mode, loff_t offset, u32 len_high,
 			u32 len_low);
+long sys_sigsuspend(int history0, int history1, old_sigset_t mask);
+long sys_sigaction(int sig, const struct old_sigaction __user *act,
+		   struct old_sigaction __user *oact);
+long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss);
 long sys_sigreturn(void);
 long sys_rt_sigreturn(void);
 long sys32_sigreturn(void);
diff --git a/trunk/arch/s390/kernel/signal.c b/trunk/arch/s390/kernel/signal.c
index 9c6e747a5e1e..c3ff70a7b247 100644
--- a/trunk/arch/s390/kernel/signal.c
+++ b/trunk/arch/s390/kernel/signal.c
@@ -48,6 +48,54 @@ typedef struct
 	struct ucontext uc;
 } rt_sigframe;
 
+/*
+ * Atomically swap in the new signal mask, and wait for a signal.
+ */
+SYSCALL_DEFINE3(sigsuspend, int, history0, int, history1, old_sigset_t, mask)
+{
+	sigset_t blocked;
+	siginitset(&blocked, mask);
+	return sigsuspend(&blocked);
+}
+
+SYSCALL_DEFINE3(sigaction, int, sig, const struct old_sigaction __user *, act,
+		struct old_sigaction __user *, oact)
+{
+	struct k_sigaction new_ka, old_ka;
+	int ret;
+
+	if (act) {
+		old_sigset_t mask;
+		if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+		    __get_user(new_ka.sa.sa_handler, &act->sa_handler) ||
+		    __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) ||
+		    __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+		    __get_user(mask, &act->sa_mask))
+			return -EFAULT;
+		siginitset(&new_ka.sa.sa_mask, mask);
+	}
+
+	ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+	if (!ret && oact) {
+		if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+		    __put_user(old_ka.sa.sa_handler, &oact->sa_handler) ||
+		    __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) ||
+		    __put_user(old_ka.sa.sa_flags, &oact->sa_flags) ||
+		    __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask))
+			return -EFAULT;
+	}
+
+	return ret;
+}
+
+SYSCALL_DEFINE2(sigaltstack, const stack_t __user *, uss,
+		stack_t __user *, uoss)
+{
+	struct pt_regs *regs = task_pt_regs(current);
+	return do_sigaltstack(uss, uoss, regs->gprs[15]);
+}
+
 /* Returns non-zero on fault. */
 static int save_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
 {
@@ -142,7 +190,8 @@ SYSCALL_DEFINE0(rt_sigreturn)
 	set_current_blocked(&set);
 	if (restore_sigregs(regs, &frame->uc.uc_mcontext))
 		goto badframe;
-	if (restore_altstack(&frame->uc.uc_stack))
+	if (do_sigaltstack(&frame->uc.uc_stack, NULL,
+			   regs->gprs[15]) == -EFAULT)
 		goto badframe;
 	return regs->gprs[2];
 badframe:
@@ -276,7 +325,10 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	/* Create the ucontext.  */
 	err |= __put_user(0, &frame->uc.uc_flags);
 	err |= __put_user(NULL, &frame->uc.uc_link);
-	err |= __save_altstack(&frame->uc.uc_stack, regs->gprs[15]);
+	err |= __put_user((void __user *)current->sas_ss_sp, &frame->uc.uc_stack.ss_sp);
+	err |= __put_user(sas_ss_flags(regs->gprs[15]),
+			  &frame->uc.uc_stack.ss_flags);
+	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
 	err |= save_sigregs(regs, &frame->uc.uc_mcontext);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 	if (err)
diff --git a/trunk/arch/s390/kernel/syscalls.S b/trunk/arch/s390/kernel/syscalls.S
index aaac708aa110..6a6c61f94dd3 100644
--- a/trunk/arch/s390/kernel/syscalls.S
+++ b/trunk/arch/s390/kernel/syscalls.S
@@ -13,7 +13,7 @@ SYSCALL(sys_exit,sys_exit,sys32_exit_wrapper)
 SYSCALL(sys_fork,sys_fork,sys_fork)
 SYSCALL(sys_read,sys_read,sys32_read_wrapper)
 SYSCALL(sys_write,sys_write,sys32_write_wrapper)
-SYSCALL(sys_open,sys_open,compat_sys_open)			/* 5 */
+SYSCALL(sys_open,sys_open,sys32_open_wrapper)			/* 5 */
 SYSCALL(sys_close,sys_close,sys32_close_wrapper)
 SYSCALL(sys_restart_syscall,sys_restart_syscall,sys_restart_syscall)
 SYSCALL(sys_creat,sys_creat,sys32_creat_wrapper)
@@ -75,7 +75,7 @@ SYSCALL(sys_dup2,sys_dup2,sys32_dup2_wrapper)
 SYSCALL(sys_getppid,sys_getppid,sys_getppid)
 SYSCALL(sys_getpgrp,sys_getpgrp,sys_getpgrp)			/* 65 */
 SYSCALL(sys_setsid,sys_setsid,sys_setsid)
-SYSCALL(sys_sigaction,sys_sigaction,compat_sys_sigaction)
+SYSCALL(sys_sigaction,sys_sigaction,sys32_sigaction_wrapper)
 NI_SYSCALL							/* old sgetmask syscall*/
 NI_SYSCALL							/* old ssetmask syscall*/
 SYSCALL(sys_setreuid16,sys_ni_syscall,sys32_setreuid16_wrapper)	/* old setreuid16 syscall */
@@ -112,8 +112,8 @@ SYSCALL(sys_fstatfs,sys_fstatfs,compat_sys_fstatfs_wrapper)	/* 100 */
 NI_SYSCALL							/* ioperm for i386 */
 SYSCALL(sys_socketcall,sys_socketcall,compat_sys_socketcall_wrapper)
 SYSCALL(sys_syslog,sys_syslog,sys32_syslog_wrapper)
-SYSCALL(sys_setitimer,sys_setitimer,compat_sys_setitimer)
-SYSCALL(sys_getitimer,sys_getitimer,compat_sys_getitimer)	/* 105 */
+SYSCALL(sys_setitimer,sys_setitimer,compat_sys_setitimer_wrapper)
+SYSCALL(sys_getitimer,sys_getitimer,compat_sys_getitimer_wrapper)	/* 105 */
 SYSCALL(sys_newstat,sys_newstat,compat_sys_newstat_wrapper)
 SYSCALL(sys_newlstat,sys_newlstat,compat_sys_newlstat_wrapper)
 SYSCALL(sys_newfstat,sys_newfstat,compat_sys_newfstat_wrapper)
@@ -122,7 +122,7 @@ SYSCALL(sys_lookup_dcookie,sys_lookup_dcookie,sys32_lookup_dcookie_wrapper)	/* 1
 SYSCALL(sys_vhangup,sys_vhangup,sys_vhangup)
 NI_SYSCALL							/* old "idle" system call */
 NI_SYSCALL							/* vm86old for i386 */
-SYSCALL(sys_wait4,sys_wait4,compat_sys_wait4)
+SYSCALL(sys_wait4,sys_wait4,compat_sys_wait4_wrapper)
 SYSCALL(sys_swapoff,sys_swapoff,sys32_swapoff_wrapper)		/* 115 */
 SYSCALL(sys_sysinfo,sys_sysinfo,compat_sys_sysinfo_wrapper)
 SYSCALL(sys_s390_ipc,sys_s390_ipc,sys32_ipc_wrapper)
@@ -134,7 +134,7 @@ SYSCALL(sys_newuname,sys_newuname,sys32_newuname_wrapper)
 NI_SYSCALL							/* modify_ldt for i386 */
 SYSCALL(sys_adjtimex,sys_adjtimex,compat_sys_adjtimex_wrapper)
 SYSCALL(sys_mprotect,sys_mprotect,sys32_mprotect_wrapper)	/* 125 */
-SYSCALL(sys_sigprocmask,sys_sigprocmask,compat_sys_sigprocmask)
+SYSCALL(sys_sigprocmask,sys_sigprocmask,compat_sys_sigprocmask_wrapper)
 NI_SYSCALL							/* old "create module" */
 SYSCALL(sys_init_module,sys_init_module,sys_init_module_wrapper)
 SYSCALL(sys_delete_module,sys_delete_module,sys_delete_module_wrapper)
@@ -169,7 +169,7 @@ SYSCALL(sys_sched_getscheduler,sys_sched_getscheduler,sys32_sched_getscheduler_w
 SYSCALL(sys_sched_yield,sys_sched_yield,sys_sched_yield)
 SYSCALL(sys_sched_get_priority_max,sys_sched_get_priority_max,sys32_sched_get_priority_max_wrapper)
 SYSCALL(sys_sched_get_priority_min,sys_sched_get_priority_min,sys32_sched_get_priority_min_wrapper)	/* 160 */
-SYSCALL(sys_sched_rr_get_interval,sys_sched_rr_get_interval,compat_sys_sched_rr_get_interval)
+SYSCALL(sys_sched_rr_get_interval,sys_sched_rr_get_interval,sys32_sched_rr_get_interval_wrapper)
 SYSCALL(sys_nanosleep,sys_nanosleep,compat_sys_nanosleep_wrapper)
 SYSCALL(sys_mremap,sys_mremap,sys32_mremap_wrapper)
 SYSCALL(sys_setresuid16,sys_ni_syscall,sys32_setresuid16_wrapper)	/* old setresuid16 syscall */
@@ -182,19 +182,19 @@ SYSCALL(sys_setresgid16,sys_ni_syscall,sys32_setresgid16_wrapper)	/* 170 old set
 SYSCALL(sys_getresgid16,sys_ni_syscall,sys32_getresgid16_wrapper)	/* old getresgid16 syscall */
 SYSCALL(sys_prctl,sys_prctl,sys32_prctl_wrapper)
 SYSCALL(sys_rt_sigreturn,sys_rt_sigreturn,sys32_rt_sigreturn)
-SYSCALL(sys_rt_sigaction,sys_rt_sigaction,compat_sys_rt_sigaction)
-SYSCALL(sys_rt_sigprocmask,sys_rt_sigprocmask,compat_sys_rt_sigprocmask) /* 175 */
-SYSCALL(sys_rt_sigpending,sys_rt_sigpending,compat_sys_rt_sigpending)
-SYSCALL(sys_rt_sigtimedwait,sys_rt_sigtimedwait,compat_sys_rt_sigtimedwait)
-SYSCALL(sys_rt_sigqueueinfo,sys_rt_sigqueueinfo,compat_sys_rt_sigqueueinfo)
-SYSCALL(sys_rt_sigsuspend,sys_rt_sigsuspend,compat_sys_rt_sigsuspend)
+SYSCALL(sys_rt_sigaction,sys_rt_sigaction,sys32_rt_sigaction_wrapper)
+SYSCALL(sys_rt_sigprocmask,sys_rt_sigprocmask,sys32_rt_sigprocmask_wrapper)	/* 175 */
+SYSCALL(sys_rt_sigpending,sys_rt_sigpending,sys32_rt_sigpending_wrapper)
+SYSCALL(sys_rt_sigtimedwait,sys_rt_sigtimedwait,compat_sys_rt_sigtimedwait_wrapper)
+SYSCALL(sys_rt_sigqueueinfo,sys_rt_sigqueueinfo,sys32_rt_sigqueueinfo_wrapper)
+SYSCALL(sys_rt_sigsuspend,sys_rt_sigsuspend,compat_sys_rt_sigsuspend_wrapper)
 SYSCALL(sys_pread64,sys_pread64,sys32_pread64_wrapper)		/* 180 */
 SYSCALL(sys_pwrite64,sys_pwrite64,sys32_pwrite64_wrapper)
 SYSCALL(sys_chown16,sys_ni_syscall,sys32_chown16_wrapper)	/* old chown16 syscall */
 SYSCALL(sys_getcwd,sys_getcwd,sys32_getcwd_wrapper)
 SYSCALL(sys_capget,sys_capget,sys32_capget_wrapper)
 SYSCALL(sys_capset,sys_capset,sys32_capset_wrapper)		/* 185 */
-SYSCALL(sys_sigaltstack,sys_sigaltstack,compat_sys_sigaltstack)
+SYSCALL(sys_sigaltstack,sys_sigaltstack,sys32_sigaltstack_wrapper)
 SYSCALL(sys_sendfile,sys_sendfile64,sys32_sendfile_wrapper)
 NI_SYSCALL							/* streams1 */
 NI_SYSCALL							/* streams2 */
@@ -246,7 +246,7 @@ SYSCALL(sys_lremovexattr,sys_lremovexattr,sys32_lremovexattr_wrapper)
 SYSCALL(sys_fremovexattr,sys_fremovexattr,sys32_fremovexattr_wrapper)	/* 235 */
 SYSCALL(sys_gettid,sys_gettid,sys_gettid)
 SYSCALL(sys_tkill,sys_tkill,sys_tkill_wrapper)
-SYSCALL(sys_futex,sys_futex,compat_sys_futex)
+SYSCALL(sys_futex,sys_futex,compat_sys_futex_wrapper)
 SYSCALL(sys_sched_setaffinity,sys_sched_setaffinity,sys32_sched_setaffinity_wrapper)
 SYSCALL(sys_sched_getaffinity,sys_sched_getaffinity,sys32_sched_getaffinity_wrapper)	/* 240 */
 SYSCALL(sys_tgkill,sys_tgkill,sys_tgkill_wrapper)
@@ -289,14 +289,14 @@ SYSCALL(sys_kexec_load,sys_kexec_load,compat_sys_kexec_load_wrapper)
 SYSCALL(sys_add_key,sys_add_key,compat_sys_add_key_wrapper)
 SYSCALL(sys_request_key,sys_request_key,compat_sys_request_key_wrapper)
 SYSCALL(sys_keyctl,sys_keyctl,compat_sys_keyctl_wrapper)		/* 280 */
-SYSCALL(sys_waitid,sys_waitid,compat_sys_waitid)
+SYSCALL(sys_waitid,sys_waitid,compat_sys_waitid_wrapper)
 SYSCALL(sys_ioprio_set,sys_ioprio_set,sys_ioprio_set_wrapper)
 SYSCALL(sys_ioprio_get,sys_ioprio_get,sys_ioprio_get_wrapper)
 SYSCALL(sys_inotify_init,sys_inotify_init,sys_inotify_init)
 SYSCALL(sys_inotify_add_watch,sys_inotify_add_watch,sys_inotify_add_watch_wrapper)	/* 285 */
 SYSCALL(sys_inotify_rm_watch,sys_inotify_rm_watch,sys_inotify_rm_watch_wrapper)
 NI_SYSCALL							/* 287 sys_migrate_pages */
-SYSCALL(sys_openat,sys_openat,compat_sys_openat)
+SYSCALL(sys_openat,sys_openat,compat_sys_openat_wrapper)
 SYSCALL(sys_mkdirat,sys_mkdirat,sys_mkdirat_wrapper)
 SYSCALL(sys_mknodat,sys_mknodat,sys_mknodat_wrapper)	/* 290 */
 SYSCALL(sys_fchownat,sys_fchownat,sys_fchownat_wrapper)
@@ -312,8 +312,8 @@ SYSCALL(sys_faccessat,sys_faccessat,sys_faccessat_wrapper)	/* 300 */
 SYSCALL(sys_pselect6,sys_pselect6,compat_sys_pselect6_wrapper)
 SYSCALL(sys_ppoll,sys_ppoll,compat_sys_ppoll_wrapper)
 SYSCALL(sys_unshare,sys_unshare,sys_unshare_wrapper)
-SYSCALL(sys_set_robust_list,sys_set_robust_list,compat_sys_set_robust_list)
-SYSCALL(sys_get_robust_list,sys_get_robust_list,compat_sys_get_robust_list)
+SYSCALL(sys_set_robust_list,sys_set_robust_list,compat_sys_set_robust_list_wrapper)
+SYSCALL(sys_get_robust_list,sys_get_robust_list,compat_sys_get_robust_list_wrapper)
 SYSCALL(sys_splice,sys_splice,sys_splice_wrapper)
 SYSCALL(sys_sync_file_range,sys_sync_file_range,sys_sync_file_range_wrapper)
 SYSCALL(sys_tee,sys_tee,sys_tee_wrapper)
@@ -328,8 +328,8 @@ SYSCALL(sys_signalfd,sys_signalfd,compat_sys_signalfd_wrapper)
 NI_SYSCALL						/* 317 old sys_timer_fd */
 SYSCALL(sys_eventfd,sys_eventfd,sys_eventfd_wrapper)
 SYSCALL(sys_timerfd_create,sys_timerfd_create,sys_timerfd_create_wrapper)
-SYSCALL(sys_timerfd_settime,sys_timerfd_settime,compat_sys_timerfd_settime) /* 320 */
-SYSCALL(sys_timerfd_gettime,sys_timerfd_gettime,compat_sys_timerfd_gettime)
+SYSCALL(sys_timerfd_settime,sys_timerfd_settime,compat_sys_timerfd_settime_wrapper) /* 320 */
+SYSCALL(sys_timerfd_gettime,sys_timerfd_gettime,compat_sys_timerfd_gettime_wrapper)
 SYSCALL(sys_signalfd4,sys_signalfd4,compat_sys_signalfd4_wrapper)
 SYSCALL(sys_eventfd2,sys_eventfd2,sys_eventfd2_wrapper)
 SYSCALL(sys_inotify_init1,sys_inotify_init1,sys_inotify_init1_wrapper)
@@ -338,13 +338,13 @@ SYSCALL(sys_dup3,sys_dup3,sys_dup3_wrapper)
 SYSCALL(sys_epoll_create1,sys_epoll_create1,sys_epoll_create1_wrapper)
 SYSCALL(sys_preadv,sys_preadv,compat_sys_preadv_wrapper)
 SYSCALL(sys_pwritev,sys_pwritev,compat_sys_pwritev_wrapper)
-SYSCALL(sys_rt_tgsigqueueinfo,sys_rt_tgsigqueueinfo,compat_sys_rt_tgsigqueueinfo) /* 330 */
+SYSCALL(sys_rt_tgsigqueueinfo,sys_rt_tgsigqueueinfo,compat_sys_rt_tgsigqueueinfo_wrapper) /* 330 */
 SYSCALL(sys_perf_event_open,sys_perf_event_open,sys_perf_event_open_wrapper)
 SYSCALL(sys_fanotify_init,sys_fanotify_init,sys_fanotify_init_wrapper)
 SYSCALL(sys_fanotify_mark,sys_fanotify_mark,sys_fanotify_mark_wrapper)
 SYSCALL(sys_prlimit64,sys_prlimit64,sys_prlimit64_wrapper)
 SYSCALL(sys_name_to_handle_at,sys_name_to_handle_at,sys_name_to_handle_at_wrapper) /* 335 */
-SYSCALL(sys_open_by_handle_at,sys_open_by_handle_at,compat_sys_open_by_handle_at)
+SYSCALL(sys_open_by_handle_at,sys_open_by_handle_at,compat_sys_open_by_handle_at_wrapper)
 SYSCALL(sys_clock_adjtime,sys_clock_adjtime,compat_sys_clock_adjtime_wrapper)
 SYSCALL(sys_syncfs,sys_syncfs,sys_syncfs_wrapper)
 SYSCALL(sys_setns,sys_setns,sys_setns_wrapper)
diff --git a/trunk/arch/score/Kconfig b/trunk/arch/score/Kconfig
index 3b1482e7afac..a125d7207bcc 100644
--- a/trunk/arch/score/Kconfig
+++ b/trunk/arch/score/Kconfig
@@ -14,6 +14,7 @@ config SCORE
        select HAVE_MOD_ARCH_SPECIFIC
 	select MODULES_USE_ELF_REL
 	select CLONE_BACKWARDS
+	select GENERIC_SIGALTSTACK
 
 choice
 	prompt "System type"
diff --git a/trunk/arch/score/include/asm/syscalls.h b/trunk/arch/score/include/asm/syscalls.h
index acaeed680956..98d1df92fbd1 100644
--- a/trunk/arch/score/include/asm/syscalls.h
+++ b/trunk/arch/score/include/asm/syscalls.h
@@ -1,7 +1,6 @@
 #ifndef _ASM_SCORE_SYSCALLS_H
 #define _ASM_SCORE_SYSCALLS_H
 
-asmlinkage long score_sigaltstack(struct pt_regs *regs);
 asmlinkage long score_rt_sigreturn(struct pt_regs *regs);
 
 #include <asm-generic/syscalls.h>
diff --git a/trunk/arch/score/kernel/entry.S b/trunk/arch/score/kernel/entry.S
index 1557ca1a2951..7234ed09b7b7 100644
--- a/trunk/arch/score/kernel/entry.S
+++ b/trunk/arch/score/kernel/entry.S
@@ -491,8 +491,3 @@ ENTRY(sys_rt_sigreturn)
 	mv	r4, r0
 	la	r8, score_rt_sigreturn
 	br	r8
-
-ENTRY(sys_sigaltstack)
-	mv	r4, r0
-	la	r8, score_sigaltstack
-	br	r8
diff --git a/trunk/arch/score/kernel/signal.c b/trunk/arch/score/kernel/signal.c
index 02353bde92d8..a00fba32b0eb 100644
--- a/trunk/arch/score/kernel/signal.c
+++ b/trunk/arch/score/kernel/signal.c
@@ -133,16 +133,6 @@ static void __user *get_sigframe(struct k_sigaction *ka,
 	return (void __user*)((sp - frame_size) & ~7);
 }
 
-asmlinkage long
-score_sigaltstack(struct pt_regs *regs)
-{
-	const stack_t __user *uss = (const stack_t __user *) regs->regs[4];
-	stack_t __user *uoss = (stack_t __user *) regs->regs[5];
-	unsigned long usp = regs->regs[0];
-
-	return do_sigaltstack(uss, uoss, usp);
-}
-
 asmlinkage long
 score_rt_sigreturn(struct pt_regs *regs)
 {
@@ -167,9 +157,7 @@ score_rt_sigreturn(struct pt_regs *regs)
 	else if (sig)
 		force_sig(sig, current);
 
-	/* It is more difficult to avoid calling this function than to
-	   call it and ignore errors.  */
-	if (do_sigaltstack(&frame->rs_uc.uc_stack, NULL, regs->regs[0]) == -EFAULT)
+	if (restore_altstack(&frame->rs_uc.uc_stack))
 		goto badframe;
 	regs->is_syscall = 0;
 
@@ -209,12 +197,7 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
 	err |= copy_siginfo_to_user(&frame->rs_info, info);
 	err |= __put_user(0, &frame->rs_uc.uc_flags);
 	err |= __put_user(NULL, &frame->rs_uc.uc_link);
-	err |= __put_user((void __user *)current->sas_ss_sp,
-				&frame->rs_uc.uc_stack.ss_sp);
-	err |= __put_user(sas_ss_flags(regs->regs[0]),
-				&frame->rs_uc.uc_stack.ss_flags);
-	err |= __put_user(current->sas_ss_size,
-				&frame->rs_uc.uc_stack.ss_size);
+	err |= __save_altstack(&frame->rs_uc.uc_stack, regs->regs[0]);
 	err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext);
 	err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));