Building s390:defconfig ... failed Building s390:allmodconfig ... failed Building s390:performance_defconfig ... failed -------------- Error log: arch/s390/kernel/smp.c: In function 'cpu_configure_store': arch/s390/kernel/smp.c:1009:8: error: implicit declaration of function 'smp_get_base_cpu' The problem affects v4.4.y and v4.9.y stable queues. Guenter