Todd, Well, the kernel SRPM is in better shape than the kernel-source RPM, but there is still a problem. It looks like it's in the S/390 support for TUX, though. In the include/linux/smp.h header file is this: #ifdef CONFIG_SMP #include <asm/smp.h> For the other architectures, there is an include/asm-archtype/smp.h file that defines cpu_online_map. There isn't one for S/390. If CONFIG_SMP is _not_ defined, then this define happens: #define cpu_online_map 1 So, you could fudge it if you want to try that, or turn off SMP support. But, you'll need SMP support if you use the IBM OCO drivers. (Can't imagine Cisco doing that, but you never know... :) ) Hope this helps. Mark Post