GIC_CPU_CTRL_AckCtl_SHIFT   30 include/linux/irqchip/arm-gic.h #define GIC_CPU_CTRL_AckCtl		(1 << GIC_CPU_CTRL_AckCtl_SHIFT)
GIC_CPU_CTRL_AckCtl_SHIFT  276 virt/kvm/arm/vgic/vgic-mmio-v2.c 		val |= vmcr.ackctl << GIC_CPU_CTRL_AckCtl_SHIFT;