static void drop_user_return_notifiers(void)
{
	unsigned int cpu = smp_processor_id();
	struct kvm_user_return_msrs *msrs = per_cpu_ptr(user_return_msrs, cpu);

	if (msrs->registered)
		kvm_on_user_return(&msrs->urn);
}
static void drop_user_return_notifiers(void)
{
	unsigned int cpu = smp_processor_id();
	struct kvm_user_return_msrs *msrs = per_cpu_ptr(user_return_msrs, cpu);

	if (msrs->registered)
		kvm_on_user_return(&msrs->urn);
}