ACPI: bind workqueues to CPU 0 to avoid SMI corruption

	return AE_OK;

}

static void bind_to_cpu0(struct work_struct *work)

{

	set_cpus_allowed(current, cpumask_of_cpu(0));

	kfree(work);

}

static void bind_workqueue(struct workqueue_struct *wq)

{

	struct work_struct *work;

	work = kzalloc(sizeof(struct work_struct), GFP_KERNEL);

	INIT_WORK(work, bind_to_cpu0);

	queue_work(wq, work);

}

acpi_status acpi_os_initialize1(void)

{

	/*

	 * On some machines, a software-initiated SMI causes corruption unless

	 * the SMI runs on CPU 0.  An SMI can be initiated by any AML, but

	 * typically it's done in GPE-related methods that are run via

	 * workqueues, so we can avoid the known corruption cases by binding

	 * the workqueues to CPU 0.

	 */

	kacpid_wq = create_singlethread_workqueue("kacpid");

	bind_workqueue(kacpid_wq);

	kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");

	bind_workqueue(kacpi_notify_wq);

	kacpi_hotplug_wq = create_singlethread_workqueue("kacpi_hotplug");

	bind_workqueue(kacpi_hotplug_wq);

	BUG_ON(!kacpid_wq);

	BUG_ON(!kacpi_notify_wq);

	BUG_ON(!kacpi_hotplug_wq);