SCCB_EVENT_PENDING
fi->srv_signal.ext_params |= inti->ext.ext_params & SCCB_EVENT_PENDING;
if (fi->srv_signal.ext_params & SCCB_EVENT_PENDING)
fi->srv_signal.ext_params &= ~SCCB_EVENT_PENDING;
return write_sclp(vcpu, ext.ext_params & SCCB_EVENT_PENDING);