I'm keeping you busy ;-) In my previous mail I reported that 2.6.29-rc7 booted OK too after applying the same reverts as needed for .27 and .28 for Hercules, but I did run into a new issue. Initially I had CONFIG_HVC_IUCV set to y, and with that the boot stopped after: hvc_iucv: The z/VM IUCV HVC device driver cannot be used without z/VM Looks like the system got into a loop with one processor at 100%. After disabling the option the boot was successful. As I assume this option should be enabled for generic distro kernels, I guess this is a bug. I've not done any further investigation yet. Hoping you have some ideas. Cheers, FJP -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html