unsigned int s390_cpu_set_state(uint8_t cpu_state, S390CPU *cpu) { trace_cpu_set_state(CPU(cpu)->cpu_index, cpu_state); switch (cpu_state) { case CPU_STATE_STOPPED: case CPU_STATE_CHECK_STOP: /* halt the cpu for common infrastructure */ s390_cpu_halt(cpu); break; case CPU_STATE_OPERATING: case CPU_STATE_LOAD: /* unhalt the cpu for common infrastructure */ s390_cpu_unhalt(cpu); break; default: error_report("Requested CPU state is not a valid S390 CPU state: %u", cpu_state); exit(1); cpu->env.cpu_state = cpu_state; return s390_count_running_cpus();