#define OPAL_INT_GET_XIRR                    122

int64_t opal_int_get_xirr(uint32_t *out_xirr, bool just_poll);

Modelled on the 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 I - Device-tree updates). If OPAL does not create such a device, the host OS MUST NOT use this call.