| OPAL_REINIT_CPUS |
| ================ |
| :: |
| |
| static int64_t opal_reinit_cpus(uint64_t flags); |
| |
| This OPAL call reinitializes some bit of CPU state across *ALL* CPUs. |
| Consequently, all CPUs must be in OPAL for this call to succeed (either |
| at boot time or after OPAL_RETURN_CPU is called) |
| |
| Arguments |
| --------- |
| Currently, possible flags are: :: |
| |
| enum { |
| OPAL_REINIT_CPUS_HILE_BE = (1 << 0), |
| OPAL_REINIT_CPUS_HILE_LE = (1 << 1), |
| OPAL_REINIT_CPUS_MMU_HASH = (1 << 2), |
| OPAL_REINIT_CPUS_MMU_RADIX = (1 << 3), |
| OPAL_REINIT_CPUS_TM_SUSPEND_DISABLED = (1 << 4), |
| }; |
| |
| Extra flags may be added in the future, so other bits *must* be 0. |
| |
| On POWER7 CPUs, only OPAL_REINIT_CPUS_HILE_BE is supported. All other |
| flags will return OPAL_UNSUPPORTED. |
| |
| On POWER8 CPUs, only OPAL_REINIT_CPUS_HILE_BE and OPAL_REINIT_CPUS_HILE_LE |
| are support and other bits *MUST NOT* be set. |
| |
| On POWER9 CPUs, all options including OPAL_REINIT_CPUS_MMU_HASH and |
| OPAL_REINIT_CPUS_MMU_RADIX. |
| |
| OPAL_REINIT_CPUS_TM_SUSPEND_DISABLED |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| |
| This flag requests that CPUs be configured with TM (Transactional Memory) |
| suspend mode disabled. This may only be supported on some CPU versions. |
| |
| |
| Returns |
| ------- |
| |
| ``OPAL_SUCCESS`` |
| Success! |
| |
| ``OPAL_UNSUPPORTED`` |
| Processor does not suport reinit flags. |
