From: Martin Schwidefsky <schwidefsky@de.ibm.com>
From: Ulrich Weigand <uweigand@de.ibm.com>

s390 core changes:
 - Remove defines for kernel_stack_size and async_stack_size.
 - Reserve system call number for kexec.
 - Add cc-option check for new gcc option packed-stack.
 - Fix race on no_hz_cpu_mask in stop_hz_timer.
 - Fix ptrace to make it send a SIGTRAP before the first instruction
   of a single stepped signal handler is executed.
 - Use force_sig_info with a full siginfo structure for illegal operation.
 - Remove verbatim copy of si_codes from asm-s390/siginfo.h. Use the
   generic definitions.
 - Regenerate default configuration.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>