| .. _OPAL_INT_EOI: |
| |
| OPAL_INT_EOI |
| ============ |
| |
| .. code-block:: c |
| |
| #define OPAL_INT_EOI 124 |
| |
| static int64_t opal_int_eoi(uint32_t xirr); |
| |
| Modelled on the ``H_EOI`` PAPR call. |
| |
| This can return a positive value, which means more interrupts |
| are queued for that CPU/priority and must be fetched as the XIVE is not |
| guaranteed to assert the CPU external interrupt line again until the |
| pending queue for the current priority has been emptied. |
| |
| 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. |
