36 kvm_arch_irqfd_allowed(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_arch_irqfd_allowed()  argument
46 	struct kvm *kvm = irqfd->kvm;  in irqfd_inject()  local
49 		kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, irqfd->gsi, 1,  in irqfd_inject()
51 		kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, irqfd->gsi, 0,  in irqfd_inject()
54 		kvm_set_irq(kvm, KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,  in irqfd_inject()
63 				 srcu_read_lock_held(&resampler->kvm->irq_srcu))  in irqfd_resampler_notify()
76 	struct kvm *kvm;  in irqfd_resampler_ack()  local
81 	kvm = resampler->kvm;  in irqfd_resampler_ack()
83 	kvm_set_irq(kvm, KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,  in irqfd_resampler_ack()
86 	idx = srcu_read_lock(&kvm->irq_srcu);  in irqfd_resampler_ack()
88 	srcu_read_unlock(&kvm->irq_srcu, idx);  in irqfd_resampler_ack()
95 	struct kvm *kvm = resampler->kvm;  in irqfd_resampler_shutdown()  local
97 	mutex_lock(&kvm->irqfds.resampler_lock);  in irqfd_resampler_shutdown()
100 	synchronize_srcu(&kvm->irq_srcu);  in irqfd_resampler_shutdown()
104 		kvm_unregister_irq_ack_notifier(kvm, &resampler->notifier);  in irqfd_resampler_shutdown()
109 		kvm_set_irq(kvm, KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,  in irqfd_resampler_shutdown()
114 	mutex_unlock(&kvm->irqfds.resampler_lock);  in irqfd_resampler_shutdown()
125 	struct kvm *kvm = irqfd->kvm;  in irqfd_shutdown()  local
129 	synchronize_srcu(&kvm->irq_srcu);  in irqfd_shutdown()
183 				struct kvm *kvm, int irq_source_id,  in kvm_arch_set_irq_inatomic()  argument
200 	struct kvm *kvm = irqfd->kvm;  in irqfd_wakeup()  local
209 		idx = srcu_read_lock(&kvm->irq_srcu);  in irqfd_wakeup()
215 		if (kvm_arch_set_irq_inatomic(&irq, kvm,  in irqfd_wakeup()
219 		srcu_read_unlock(&kvm->irq_srcu, idx);  in irqfd_wakeup()
227 		spin_lock_irqsave(&kvm->irqfds.lock, iflags);  in irqfd_wakeup()
241 		spin_unlock_irqrestore(&kvm->irqfds.lock, iflags);  in irqfd_wakeup()
257 static void irqfd_update(struct kvm *kvm, struct kvm_kernel_irqfd *irqfd)  in irqfd_update()  argument
263 	n_entries = kvm_irq_map_gsi(kvm, entries, irqfd->gsi);  in irqfd_update()
288 				struct kvm *kvm, unsigned int host_irq,  in kvm_arch_update_irqfd_routing()  argument
303 kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd_assign()  argument
312 	if (!kvm_arch_intc_initialized(kvm))  in kvm_irqfd_assign()
315 	if (!kvm_arch_irqfd_allowed(kvm, args))  in kvm_irqfd_assign()
322 	irqfd->kvm = kvm;  in kvm_irqfd_assign()
327 	seqcount_spinlock_init(&irqfd->irq_entry_sc, &kvm->irqfds.lock);  in kvm_irqfd_assign()
355 		mutex_lock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
358 				    &kvm->irqfds.resampler_list, link) {  in kvm_irqfd_assign()
370 				mutex_unlock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
374 			resampler->kvm = kvm;  in kvm_irqfd_assign()
380 			list_add_rcu(&resampler->link, &kvm->irqfds.resampler_list);  in kvm_irqfd_assign()
381 			kvm_register_irq_ack_notifier(kvm,  in kvm_irqfd_assign()
387 		synchronize_srcu(&kvm->irq_srcu);  in kvm_irqfd_assign()
389 		mutex_unlock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
399 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
402 	list_for_each_entry(tmp, &kvm->irqfds.items, list) {  in kvm_irqfd_assign()
407 		spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
411 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_irqfd_assign()
412 	irqfd_update(kvm, irqfd);  in kvm_irqfd_assign()
414 	list_add_tail(&irqfd->list, &kvm->irqfds.items);  in kvm_irqfd_assign()
416 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
441 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irqfd_assign()
467 bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)  in kvm_irq_has_notifier()  argument
472 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_irq_has_notifier()
473 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);  in kvm_irq_has_notifier()
475 		hlist_for_each_entry_srcu(kian, &kvm->irq_ack_notifier_list,  in kvm_irq_has_notifier()
476 					  link, srcu_read_lock_held(&kvm->irq_srcu))  in kvm_irq_has_notifier()
478 				srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irq_has_notifier()
482 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irq_has_notifier()
488 void kvm_notify_acked_gsi(struct kvm *kvm, int gsi)  in kvm_notify_acked_gsi()  argument
492 	hlist_for_each_entry_srcu(kian, &kvm->irq_ack_notifier_list,  in kvm_notify_acked_gsi()
493 				  link, srcu_read_lock_held(&kvm->irq_srcu))  in kvm_notify_acked_gsi()
498 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)  in kvm_notify_acked_irq()  argument
504 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_notify_acked_irq()
505 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);  in kvm_notify_acked_irq()
507 		kvm_notify_acked_gsi(kvm, gsi);  in kvm_notify_acked_irq()
508 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_notify_acked_irq()
511 void kvm_register_irq_ack_notifier(struct kvm *kvm,  in kvm_register_irq_ack_notifier()  argument
514 	mutex_lock(&kvm->irq_lock);  in kvm_register_irq_ack_notifier()
515 	hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list);  in kvm_register_irq_ack_notifier()
516 	mutex_unlock(&kvm->irq_lock);  in kvm_register_irq_ack_notifier()
517 	kvm_arch_post_irq_ack_notifier_list_update(kvm);  in kvm_register_irq_ack_notifier()
520 void kvm_unregister_irq_ack_notifier(struct kvm *kvm,  in kvm_unregister_irq_ack_notifier()  argument
523 	mutex_lock(&kvm->irq_lock);  in kvm_unregister_irq_ack_notifier()
525 	mutex_unlock(&kvm->irq_lock);  in kvm_unregister_irq_ack_notifier()
526 	synchronize_srcu(&kvm->irq_srcu);  in kvm_unregister_irq_ack_notifier()
527 	kvm_arch_post_irq_ack_notifier_list_update(kvm);  in kvm_unregister_irq_ack_notifier()
532 kvm_eventfd_init(struct kvm *kvm)  in kvm_eventfd_init()  argument
535 	spin_lock_init(&kvm->irqfds.lock);  in kvm_eventfd_init()
536 	INIT_LIST_HEAD(&kvm->irqfds.items);  in kvm_eventfd_init()
537 	INIT_LIST_HEAD(&kvm->irqfds.resampler_list);  in kvm_eventfd_init()
538 	mutex_init(&kvm->irqfds.resampler_lock);  in kvm_eventfd_init()
540 	INIT_LIST_HEAD(&kvm->ioeventfds);  in kvm_eventfd_init()
548 kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd_deassign()  argument
557 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_deassign()
559 	list_for_each_entry_safe(irqfd, tmp, &kvm->irqfds.items, list) {  in kvm_irqfd_deassign()
574 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_deassign()
588 kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd()  argument
594 		return kvm_irqfd_deassign(kvm, args);  in kvm_irqfd()
596 	return kvm_irqfd_assign(kvm, args);  in kvm_irqfd()
604 kvm_irqfd_release(struct kvm *kvm)  in kvm_irqfd_release()  argument
608 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_release()
610 	list_for_each_entry_safe(irqfd, tmp, &kvm->irqfds.items, list)  in kvm_irqfd_release()
613 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_release()
627 void kvm_irq_routing_update(struct kvm *kvm)  in kvm_irq_routing_update()  argument
631 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irq_routing_update()
633 	list_for_each_entry(irqfd, &kvm->irqfds.items, list) {  in kvm_irq_routing_update()
639 		irqfd_update(kvm, irqfd);  in kvm_irq_routing_update()
645 					irqfd->kvm, irqfd->producer->irq,  in kvm_irq_routing_update()
652 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irq_routing_update()
655 bool kvm_notify_irqfd_resampler(struct kvm *kvm,  in kvm_notify_irqfd_resampler()  argument
662 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_notify_irqfd_resampler()
663 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);  in kvm_notify_irqfd_resampler()
666 					 &kvm->irqfds.resampler_list, link,  in kvm_notify_irqfd_resampler()
667 					 srcu_read_lock_held(&kvm->irq_srcu)) {  in kvm_notify_irqfd_resampler()
670 				srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_notify_irqfd_resampler()
675 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_notify_irqfd_resampler()
812 ioeventfd_check_collision(struct kvm *kvm, struct _ioeventfd *p)  in ioeventfd_check_collision()  argument
816 	list_for_each_entry(_p, &kvm->ioeventfds, list)  in ioeventfd_check_collision()
837 static int kvm_assign_ioeventfd_idx(struct kvm *kvm,  in kvm_assign_ioeventfd_idx()  argument
868 	mutex_lock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
871 	if (ioeventfd_check_collision(kvm, p)) {  in kvm_assign_ioeventfd_idx()
878 	ret = kvm_io_bus_register_dev(kvm, bus_idx, p->addr, p->length,  in kvm_assign_ioeventfd_idx()
883 	kvm_get_bus(kvm, bus_idx)->ioeventfd_count++;  in kvm_assign_ioeventfd_idx()
884 	list_add_tail(&p->list, &kvm->ioeventfds);  in kvm_assign_ioeventfd_idx()
886 	mutex_unlock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
891 	mutex_unlock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
901 kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx,  in kvm_deassign_ioeventfd_idx()  argument
916 	mutex_lock(&kvm->slots_lock);  in kvm_deassign_ioeventfd_idx()
918 	list_for_each_entry(p, &kvm->ioeventfds, list) {  in kvm_deassign_ioeventfd_idx()
929 		kvm_io_bus_unregister_dev(kvm, bus_idx, &p->dev);  in kvm_deassign_ioeventfd_idx()
930 		bus = kvm_get_bus(kvm, bus_idx);  in kvm_deassign_ioeventfd_idx()
937 	mutex_unlock(&kvm->slots_lock);  in kvm_deassign_ioeventfd_idx()
944 static int kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_deassign_ioeventfd()  argument
947 	int ret = kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_deassign_ioeventfd()
950 		kvm_deassign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);  in kvm_deassign_ioeventfd()
956 kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_assign_ioeventfd()  argument
986 	ret = kvm_assign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_assign_ioeventfd()
994 		ret = kvm_assign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);  in kvm_assign_ioeventfd()
1002 	kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_assign_ioeventfd()
1008 kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_ioeventfd()  argument
1011 		return kvm_deassign_ioeventfd(kvm, args);  in kvm_ioeventfd()
1013 	return kvm_assign_ioeventfd(kvm, args);  in kvm_ioeventfd()