GICR_IPRIORITYR
n = (reg - GICR_IPRIORITYR(0)) / 4;
irq_base = (reg - GICR_IPRIORITYR(0)) + offset;
VGIC_REGISTER_RANGE(GICR_IPRIORITYR(0), GICR_IPRIORITYR(32), 4,