35 lines
943 B
ReStructuredText
35 lines
943 B
ReStructuredText
.. _OPAL_QUERY_CPU_STATUS:
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OPAL_QUERY_CPU_STATUS
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=====================
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.. code-block:: c
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#define OPAL_QUERY_CPU_STATUS 42
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enum OpalThreadStatus {
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OPAL_THREAD_INACTIVE = 0x0,
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OPAL_THREAD_STARTED = 0x1,
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OPAL_THREAD_UNAVAILABLE = 0x2 /* opal-v3 */
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};
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int64_t opal_query_cpu_status(uint64_t server_no, uint8_t *thread_status);
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Sets `thread_status` to be the state of the `server_no` CPU thread. CPU threads
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can be owned by OPAL or the OS. Ownership changes based on :ref:`OPAL_START_CPU`
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and :ref:`OPAL_RETURN_CPU`.
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``OPAL_THREAD_INACTIVE``
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Active in skiboot, not in OS. Skiboot owns the CPU thread.
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``OPAL_THREAD_STARTED``
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CPU has been started by OS, not owned by OPAL.
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``OPAL_THREAD_UNAVAILABLE``
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CPU is unavailable. e.g. is guarded out.
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Returns
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-------
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:ref:`OPAL_PARAMETER`
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Invalid address for `thread_status`, invalid CPU, or CPU not in OPAL or OS.
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:ref:`OPAL_SUCCESS`
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Successfully retreived status.
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