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Diffstat (limited to 'roms/skiboot/doc/opal-api/opal-int-set-mfrr-125.rst')
| -rw-r--r-- | roms/skiboot/doc/opal-api/opal-int-set-mfrr-125.rst | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/roms/skiboot/doc/opal-api/opal-int-set-mfrr-125.rst b/roms/skiboot/doc/opal-api/opal-int-set-mfrr-125.rst new file mode 100644 index 000000000..8e0f18530 --- /dev/null +++ b/roms/skiboot/doc/opal-api/opal-int-set-mfrr-125.rst @@ -0,0 +1,20 @@ +.. _OPAL_INT_SET_MFRR: + +OPAL_INT_SET_MFRR +================= + +.. code-block:: c + + #define OPAL_INT_SET_MFRR 125 + + static int64_t opal_int_set_mfrr(uint32_t cpu, uint8_t mfrr); + + +Modelled on the ``H_IPI`` PAPR call. + +For P9 and above systems where host doesn't know about interrupt controller. +An OS can instead make OPAL calls for XICS emulation. + +For an OS to use this OPAL call, an ``ibm,opal-intc`` compatible device must +exist in the device tree (see :ref:`xive-device-tree`). If OPAL does not create +such a device, the host OS MUST NOT use this call. |