iommu/vt-d: Convert to hotplug state machine

	}

}

static int intel_iommu_cpu_notifier(struct notifier_block *nfb,

				    unsigned long action, void *v)

static int intel_iommu_cpu_dead(unsigned int cpu)

{

	unsigned int cpu = (unsigned long)v;

	switch (action) {

	case CPU_DEAD:

	case CPU_DEAD_FROZEN:

	free_all_cpu_cached_iovas(cpu);

	flush_unmaps_timeout(cpu);

		break;

	}

	return NOTIFY_OK;

	return 0;

}

static struct notifier_block intel_iommu_cpu_nb = {

	.notifier_call = intel_iommu_cpu_notifier,

};

static ssize_t intel_iommu_show_version(struct device *dev,

					struct device_attribute *attr,

					char *buf)

	bus_register_notifier(&pci_bus_type, &device_nb);

	if (si_domain && !hw_pass_through)

		register_memory_notifier(&intel_iommu_memory_nb);

	register_hotcpu_notifier(&intel_iommu_cpu_nb);

	cpuhp_setup_state(CPUHP_IOMMU_INTEL_DEAD, "iommu/intel:dead", NULL,

			  intel_iommu_cpu_dead);

	intel_iommu_enabled = 1;

	return 0;

	CPUHP_PAGE_ALLOC_DEAD,

	CPUHP_NET_DEV_DEAD,

	CPUHP_PCI_XGENE_DEAD,

	CPUHP_IOMMU_INTEL_DEAD,

	CPUHP_WORKQUEUE_PREP,

	CPUHP_POWER_NUMA_PREPARE,

	CPUHP_HRTIMERS_PREPARE,