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()
67 	struct kvm *kvm;  in irqfd_resampler_ack()  local
73 	kvm = resampler->kvm;  in irqfd_resampler_ack()
75 	kvm_set_irq(kvm, KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,  in irqfd_resampler_ack()
78 	idx = srcu_read_lock(&kvm->irq_srcu);  in irqfd_resampler_ack()
81 	    srcu_read_lock_held(&kvm->irq_srcu))  in irqfd_resampler_ack()
84 	srcu_read_unlock(&kvm->irq_srcu, idx);  in irqfd_resampler_ack()
91 	struct kvm *kvm = resampler->kvm;  in irqfd_resampler_shutdown()  local
93 	mutex_lock(&kvm->irqfds.resampler_lock);  in irqfd_resampler_shutdown()
96 	synchronize_srcu(&kvm->irq_srcu);  in irqfd_resampler_shutdown()
100 		kvm_unregister_irq_ack_notifier(kvm, &resampler->notifier);  in irqfd_resampler_shutdown()
101 		kvm_set_irq(kvm, KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,  in irqfd_resampler_shutdown()
106 	mutex_unlock(&kvm->irqfds.resampler_lock);  in irqfd_resampler_shutdown()
117 	struct kvm *kvm = irqfd->kvm;  in irqfd_shutdown()  local
121 	synchronize_srcu(&kvm->irq_srcu);  in irqfd_shutdown()
175 				struct kvm *kvm, int irq_source_id,  in kvm_arch_set_irq_inatomic()  argument
192 	struct kvm *kvm = irqfd->kvm;  in irqfd_wakeup()  local
201 		idx = srcu_read_lock(&kvm->irq_srcu);  in irqfd_wakeup()
207 		if (kvm_arch_set_irq_inatomic(&irq, kvm,  in irqfd_wakeup()
211 		srcu_read_unlock(&kvm->irq_srcu, idx);  in irqfd_wakeup()
219 		spin_lock_irqsave(&kvm->irqfds.lock, iflags);  in irqfd_wakeup()
233 		spin_unlock_irqrestore(&kvm->irqfds.lock, iflags);  in irqfd_wakeup()
249 static void irqfd_update(struct kvm *kvm, struct kvm_kernel_irqfd *irqfd)  in irqfd_update()  argument
255 	n_entries = kvm_irq_map_gsi(kvm, entries, irqfd->gsi);  in irqfd_update()
280 				struct kvm *kvm, unsigned int host_irq,  in kvm_arch_update_irqfd_routing()  argument
295 kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd_assign()  argument
304 	if (!kvm_arch_intc_initialized(kvm))  in kvm_irqfd_assign()
307 	if (!kvm_arch_irqfd_allowed(kvm, args))  in kvm_irqfd_assign()
314 	irqfd->kvm = kvm;  in kvm_irqfd_assign()
319 	seqcount_spinlock_init(&irqfd->irq_entry_sc, &kvm->irqfds.lock);  in kvm_irqfd_assign()
347 		mutex_lock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
350 				    &kvm->irqfds.resampler_list, link) {  in kvm_irqfd_assign()
362 				mutex_unlock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
366 			resampler->kvm = kvm;  in kvm_irqfd_assign()
372 			list_add(&resampler->link, &kvm->irqfds.resampler_list);  in kvm_irqfd_assign()
373 			kvm_register_irq_ack_notifier(kvm,  in kvm_irqfd_assign()
379 		synchronize_srcu(&kvm->irq_srcu);  in kvm_irqfd_assign()
381 		mutex_unlock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
391 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
394 	list_for_each_entry(tmp, &kvm->irqfds.items, list) {  in kvm_irqfd_assign()
399 		spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
403 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_irqfd_assign()
404 	irqfd_update(kvm, irqfd);  in kvm_irqfd_assign()
406 	list_add_tail(&irqfd->list, &kvm->irqfds.items);  in kvm_irqfd_assign()
408 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
433 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irqfd_assign()
459 bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)  in kvm_irq_has_notifier()  argument
464 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_irq_has_notifier()
465 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);  in kvm_irq_has_notifier()
467 		hlist_for_each_entry_srcu(kian, &kvm->irq_ack_notifier_list,  in kvm_irq_has_notifier()
468 					  link, srcu_read_lock_held(&kvm->irq_srcu))  in kvm_irq_has_notifier()
470 				srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irq_has_notifier()
474 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irq_has_notifier()
480 void kvm_notify_acked_gsi(struct kvm *kvm, int gsi)  in kvm_notify_acked_gsi()  argument
484 	hlist_for_each_entry_srcu(kian, &kvm->irq_ack_notifier_list,  in kvm_notify_acked_gsi()
485 				  link, srcu_read_lock_held(&kvm->irq_srcu))  in kvm_notify_acked_gsi()
490 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)  in kvm_notify_acked_irq()  argument
496 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_notify_acked_irq()
497 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);  in kvm_notify_acked_irq()
499 		kvm_notify_acked_gsi(kvm, gsi);  in kvm_notify_acked_irq()
500 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_notify_acked_irq()
503 void kvm_register_irq_ack_notifier(struct kvm *kvm,  in kvm_register_irq_ack_notifier()  argument
506 	mutex_lock(&kvm->irq_lock);  in kvm_register_irq_ack_notifier()
507 	hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list);  in kvm_register_irq_ack_notifier()
508 	mutex_unlock(&kvm->irq_lock);  in kvm_register_irq_ack_notifier()
509 	kvm_arch_post_irq_ack_notifier_list_update(kvm);  in kvm_register_irq_ack_notifier()
512 void kvm_unregister_irq_ack_notifier(struct kvm *kvm,  in kvm_unregister_irq_ack_notifier()  argument
515 	mutex_lock(&kvm->irq_lock);  in kvm_unregister_irq_ack_notifier()
517 	mutex_unlock(&kvm->irq_lock);  in kvm_unregister_irq_ack_notifier()
518 	synchronize_srcu(&kvm->irq_srcu);  in kvm_unregister_irq_ack_notifier()
519 	kvm_arch_post_irq_ack_notifier_list_update(kvm);  in kvm_unregister_irq_ack_notifier()
524 kvm_eventfd_init(struct kvm *kvm)  in kvm_eventfd_init()  argument
527 	spin_lock_init(&kvm->irqfds.lock);  in kvm_eventfd_init()
528 	INIT_LIST_HEAD(&kvm->irqfds.items);  in kvm_eventfd_init()
529 	INIT_LIST_HEAD(&kvm->irqfds.resampler_list);  in kvm_eventfd_init()
530 	mutex_init(&kvm->irqfds.resampler_lock);  in kvm_eventfd_init()
532 	INIT_LIST_HEAD(&kvm->ioeventfds);  in kvm_eventfd_init()
540 kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd_deassign()  argument
549 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_deassign()
551 	list_for_each_entry_safe(irqfd, tmp, &kvm->irqfds.items, list) {  in kvm_irqfd_deassign()
566 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_deassign()
580 kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd()  argument
586 		return kvm_irqfd_deassign(kvm, args);  in kvm_irqfd()
588 	return kvm_irqfd_assign(kvm, args);  in kvm_irqfd()
596 kvm_irqfd_release(struct kvm *kvm)  in kvm_irqfd_release()  argument
600 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_release()
602 	list_for_each_entry_safe(irqfd, tmp, &kvm->irqfds.items, list)  in kvm_irqfd_release()
605 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_release()
619 void kvm_irq_routing_update(struct kvm *kvm)  in kvm_irq_routing_update()  argument
623 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irq_routing_update()
625 	list_for_each_entry(irqfd, &kvm->irqfds.items, list) {  in kvm_irq_routing_update()
631 		irqfd_update(kvm, irqfd);  in kvm_irq_routing_update()
637 					irqfd->kvm, irqfd->producer->irq,  in kvm_irq_routing_update()
644 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irq_routing_update()
779 ioeventfd_check_collision(struct kvm *kvm, struct _ioeventfd *p)  in ioeventfd_check_collision()  argument
783 	list_for_each_entry(_p, &kvm->ioeventfds, list)  in ioeventfd_check_collision()
804 static int kvm_assign_ioeventfd_idx(struct kvm *kvm,  in kvm_assign_ioeventfd_idx()  argument
835 	mutex_lock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
838 	if (ioeventfd_check_collision(kvm, p)) {  in kvm_assign_ioeventfd_idx()
845 	ret = kvm_io_bus_register_dev(kvm, bus_idx, p->addr, p->length,  in kvm_assign_ioeventfd_idx()
850 	kvm_get_bus(kvm, bus_idx)->ioeventfd_count++;  in kvm_assign_ioeventfd_idx()
851 	list_add_tail(&p->list, &kvm->ioeventfds);  in kvm_assign_ioeventfd_idx()
853 	mutex_unlock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
858 	mutex_unlock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
868 kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx,  in kvm_deassign_ioeventfd_idx()  argument
883 	mutex_lock(&kvm->slots_lock);  in kvm_deassign_ioeventfd_idx()
885 	list_for_each_entry_safe(p, tmp, &kvm->ioeventfds, list) {  in kvm_deassign_ioeventfd_idx()
897 		kvm_io_bus_unregister_dev(kvm, bus_idx, &p->dev);  in kvm_deassign_ioeventfd_idx()
898 		bus = kvm_get_bus(kvm, bus_idx);  in kvm_deassign_ioeventfd_idx()
906 	mutex_unlock(&kvm->slots_lock);  in kvm_deassign_ioeventfd_idx()
913 static int kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_deassign_ioeventfd()  argument
916 	int ret = kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_deassign_ioeventfd()
919 		kvm_deassign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);  in kvm_deassign_ioeventfd()
925 kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_assign_ioeventfd()  argument
955 	ret = kvm_assign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_assign_ioeventfd()
963 		ret = kvm_assign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);  in kvm_assign_ioeventfd()
971 	kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_assign_ioeventfd()
977 kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_ioeventfd()  argument
980 		return kvm_deassign_ioeventfd(kvm, args);  in kvm_ioeventfd()
982 	return kvm_assign_ioeventfd(kvm, args);  in kvm_ioeventfd()