| OPAL_RETURN_CPU |
| =============== |
| :: |
| |
| int64_t opal_return_cpu(void); |
| |
| When OPAL first starts the host, all secondary CPUs are spinning in OPAL. |
| To start them, one must call OPAL_START_CPU (you may want to OPAL_REINIT_CPUS |
| to set the HILE bit first). |
| |
| In cases where you need OPAL to do something for you across all CPUs, such |
| as OPAL_REINIT_CPUS, (on some platforms) a firmware update or get the machine |
| back into a similar state as to when the host OS was started (e.g. for kexec) |
| you may also need to return control of the CPU to OPAL. |
| |
| |
| Returns |
| ------- |
| This call does **not return**. You need to OPAL_START_CPU. |
