52 	struct kvm *kvm = irqfd->kvm;  in irqfd_inject()  local
55 		kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, irqfd->gsi, 1,  in irqfd_inject()
57 		kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, irqfd->gsi, 0,  in irqfd_inject()
60 		kvm_set_irq(kvm, KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,  in irqfd_inject()
73 	struct kvm *kvm;  in irqfd_resampler_ack()  local
79 	kvm = resampler->kvm;  in irqfd_resampler_ack()
81 	kvm_set_irq(kvm, KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,  in irqfd_resampler_ack()
84 	idx = srcu_read_lock(&kvm->irq_srcu);  in irqfd_resampler_ack()
89 	srcu_read_unlock(&kvm->irq_srcu, idx);  in irqfd_resampler_ack()
96 	struct kvm *kvm = resampler->kvm;  in irqfd_resampler_shutdown()  local
98 	mutex_lock(&kvm->irqfds.resampler_lock);  in irqfd_resampler_shutdown()
101 	synchronize_srcu(&kvm->irq_srcu);  in irqfd_resampler_shutdown()
105 		kvm_unregister_irq_ack_notifier(kvm, &resampler->notifier);  in irqfd_resampler_shutdown()
106 		kvm_set_irq(kvm, KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,  in irqfd_resampler_shutdown()
111 	mutex_unlock(&kvm->irqfds.resampler_lock);  in irqfd_resampler_shutdown()
176 				struct kvm *kvm, int irq_source_id,  in kvm_arch_set_irq_inatomic()  argument
193 	struct kvm *kvm = irqfd->kvm;  in irqfd_wakeup()  local
198 		idx = srcu_read_lock(&kvm->irq_srcu);  in irqfd_wakeup()
204 		if (kvm_arch_set_irq_inatomic(&irq, kvm,  in irqfd_wakeup()
208 		srcu_read_unlock(&kvm->irq_srcu, idx);  in irqfd_wakeup()
215 		spin_lock_irqsave(&kvm->irqfds.lock, flags);  in irqfd_wakeup()
229 		spin_unlock_irqrestore(&kvm->irqfds.lock, flags);  in irqfd_wakeup()
245 static void irqfd_update(struct kvm *kvm, struct kvm_kernel_irqfd *irqfd)  in irqfd_update()  argument
251 	n_entries = kvm_irq_map_gsi(kvm, entries, irqfd->gsi);  in irqfd_update()
276 				struct kvm *kvm, unsigned int host_irq,  in kvm_arch_update_irqfd_routing()  argument
284 kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd_assign()  argument
293 	if (!kvm_arch_intc_initialized(kvm))  in kvm_irqfd_assign()
300 	irqfd->kvm = kvm;  in kvm_irqfd_assign()
333 		mutex_lock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
336 				    &kvm->irqfds.resampler_list, link) {  in kvm_irqfd_assign()
347 				mutex_unlock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
351 			resampler->kvm = kvm;  in kvm_irqfd_assign()
357 			list_add(&resampler->link, &kvm->irqfds.resampler_list);  in kvm_irqfd_assign()
358 			kvm_register_irq_ack_notifier(kvm,  in kvm_irqfd_assign()
364 		synchronize_srcu(&kvm->irq_srcu);  in kvm_irqfd_assign()
366 		mutex_unlock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
376 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
379 	list_for_each_entry(tmp, &kvm->irqfds.items, list) {  in kvm_irqfd_assign()
384 		spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
388 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_irqfd_assign()
389 	irqfd_update(kvm, irqfd);  in kvm_irqfd_assign()
390 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irqfd_assign()
392 	list_add_tail(&irqfd->list, &kvm->irqfds.items);  in kvm_irqfd_assign()
394 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
441 bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)  in kvm_irq_has_notifier()  argument
446 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_irq_has_notifier()
447 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);  in kvm_irq_has_notifier()
449 		hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,  in kvm_irq_has_notifier()
452 				srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irq_has_notifier()
456 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irq_has_notifier()
462 void kvm_notify_acked_gsi(struct kvm *kvm, int gsi)  in kvm_notify_acked_gsi()  argument
466 	hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,  in kvm_notify_acked_gsi()
472 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)  in kvm_notify_acked_irq()  argument
478 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_notify_acked_irq()
479 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);  in kvm_notify_acked_irq()
481 		kvm_notify_acked_gsi(kvm, gsi);  in kvm_notify_acked_irq()
482 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_notify_acked_irq()
485 void kvm_register_irq_ack_notifier(struct kvm *kvm,  in kvm_register_irq_ack_notifier()  argument
488 	mutex_lock(&kvm->irq_lock);  in kvm_register_irq_ack_notifier()
489 	hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list);  in kvm_register_irq_ack_notifier()
490 	mutex_unlock(&kvm->irq_lock);  in kvm_register_irq_ack_notifier()
491 	kvm_vcpu_request_scan_ioapic(kvm);  in kvm_register_irq_ack_notifier()
494 void kvm_unregister_irq_ack_notifier(struct kvm *kvm,  in kvm_unregister_irq_ack_notifier()  argument
497 	mutex_lock(&kvm->irq_lock);  in kvm_unregister_irq_ack_notifier()
499 	mutex_unlock(&kvm->irq_lock);  in kvm_unregister_irq_ack_notifier()
500 	synchronize_srcu(&kvm->irq_srcu);  in kvm_unregister_irq_ack_notifier()
501 	kvm_vcpu_request_scan_ioapic(kvm);  in kvm_unregister_irq_ack_notifier()
506 kvm_eventfd_init(struct kvm *kvm)  in kvm_eventfd_init()  argument
509 	spin_lock_init(&kvm->irqfds.lock);  in kvm_eventfd_init()
510 	INIT_LIST_HEAD(&kvm->irqfds.items);  in kvm_eventfd_init()
511 	INIT_LIST_HEAD(&kvm->irqfds.resampler_list);  in kvm_eventfd_init()
512 	mutex_init(&kvm->irqfds.resampler_lock);  in kvm_eventfd_init()
514 	INIT_LIST_HEAD(&kvm->ioeventfds);  in kvm_eventfd_init()
522 kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd_deassign()  argument
531 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_deassign()
533 	list_for_each_entry_safe(irqfd, tmp, &kvm->irqfds.items, list) {  in kvm_irqfd_deassign()
548 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_deassign()
562 kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd()  argument
568 		return kvm_irqfd_deassign(kvm, args);  in kvm_irqfd()
570 	return kvm_irqfd_assign(kvm, args);  in kvm_irqfd()
578 kvm_irqfd_release(struct kvm *kvm)  in kvm_irqfd_release()  argument
582 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_release()
584 	list_for_each_entry_safe(irqfd, tmp, &kvm->irqfds.items, list)  in kvm_irqfd_release()
587 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_release()
601 void kvm_irq_routing_update(struct kvm *kvm)  in kvm_irq_routing_update()  argument
605 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irq_routing_update()
607 	list_for_each_entry(irqfd, &kvm->irqfds.items, list) {  in kvm_irq_routing_update()
608 		irqfd_update(kvm, irqfd);  in kvm_irq_routing_update()
613 					irqfd->kvm, irqfd->producer->irq,  in kvm_irq_routing_update()
620 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irq_routing_update()
755 ioeventfd_check_collision(struct kvm *kvm, struct _ioeventfd *p)  in ioeventfd_check_collision()  argument
759 	list_for_each_entry(_p, &kvm->ioeventfds, list)  in ioeventfd_check_collision()
780 static int kvm_assign_ioeventfd_idx(struct kvm *kvm,  in kvm_assign_ioeventfd_idx()  argument
811 	mutex_lock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
814 	if (ioeventfd_check_collision(kvm, p)) {  in kvm_assign_ioeventfd_idx()
821 	ret = kvm_io_bus_register_dev(kvm, bus_idx, p->addr, p->length,  in kvm_assign_ioeventfd_idx()
826 	kvm->buses[bus_idx]->ioeventfd_count++;  in kvm_assign_ioeventfd_idx()
827 	list_add_tail(&p->list, &kvm->ioeventfds);  in kvm_assign_ioeventfd_idx()
829 	mutex_unlock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
834 	mutex_unlock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
844 kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx,  in kvm_deassign_ioeventfd_idx()  argument
855 	mutex_lock(&kvm->slots_lock);  in kvm_deassign_ioeventfd_idx()
857 	list_for_each_entry_safe(p, tmp, &kvm->ioeventfds, list) {  in kvm_deassign_ioeventfd_idx()
870 		kvm_io_bus_unregister_dev(kvm, bus_idx, &p->dev);  in kvm_deassign_ioeventfd_idx()
871 		kvm->buses[bus_idx]->ioeventfd_count--;  in kvm_deassign_ioeventfd_idx()
877 	mutex_unlock(&kvm->slots_lock);  in kvm_deassign_ioeventfd_idx()
884 static int kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_deassign_ioeventfd()  argument
887 	int ret = kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_deassign_ioeventfd()
890 		kvm_deassign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);  in kvm_deassign_ioeventfd()
896 kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_assign_ioeventfd()  argument
926 	ret = kvm_assign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_assign_ioeventfd()
934 		ret = kvm_assign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);  in kvm_assign_ioeventfd()
942 	kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_assign_ioeventfd()
948 kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_ioeventfd()  argument
951 		return kvm_deassign_ioeventfd(kvm, args);  in kvm_ioeventfd()
953 	return kvm_assign_ioeventfd(kvm, args);  in kvm_ioeventfd()