GICD_IIDR_VARIANT_SHIFT   68 include/linux/irqchip/arm-gic-v3.h #define GICD_IIDR_VARIANT_SHIFT		16
GICD_IIDR_VARIANT_SHIFT   70 include/linux/irqchip/arm-gic.h #define GICD_IIDR_VARIANT_SHIFT		16