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()
83 	srcu_read_unlock(&kvm->irq_srcu, idx);  in irqfd_resampler_ack()
90 	struct kvm *kvm = resampler->kvm;  in irqfd_resampler_shutdown()  local
92 	mutex_lock(&kvm->irqfds.resampler_lock);  in irqfd_resampler_shutdown()
95 	synchronize_srcu(&kvm->irq_srcu);  in irqfd_resampler_shutdown()
99 		kvm_unregister_irq_ack_notifier(kvm, &resampler->notifier);  in irqfd_resampler_shutdown()
100 		kvm_set_irq(kvm, KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,  in irqfd_resampler_shutdown()
105 	mutex_unlock(&kvm->irqfds.resampler_lock);  in irqfd_resampler_shutdown()
116 	struct kvm *kvm = irqfd->kvm;  in irqfd_shutdown()  local
120 	synchronize_srcu(&kvm->irq_srcu);  in irqfd_shutdown()
174 				struct kvm *kvm, int irq_source_id,  in kvm_arch_set_irq_inatomic()  argument
191 	struct kvm *kvm = irqfd->kvm;  in irqfd_wakeup()  local
196 		idx = srcu_read_lock(&kvm->irq_srcu);  in irqfd_wakeup()
202 		if (kvm_arch_set_irq_inatomic(&irq, kvm,  in irqfd_wakeup()
206 		srcu_read_unlock(&kvm->irq_srcu, idx);  in irqfd_wakeup()
213 		spin_lock_irqsave(&kvm->irqfds.lock, iflags);  in irqfd_wakeup()
227 		spin_unlock_irqrestore(&kvm->irqfds.lock, iflags);  in irqfd_wakeup()
243 static void irqfd_update(struct kvm *kvm, struct kvm_kernel_irqfd *irqfd)  in irqfd_update()  argument
249 	n_entries = kvm_irq_map_gsi(kvm, entries, irqfd->gsi);  in irqfd_update()
274 				struct kvm *kvm, unsigned int host_irq,  in kvm_arch_update_irqfd_routing()  argument
282 kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd_assign()  argument
291 	if (!kvm_arch_intc_initialized(kvm))  in kvm_irqfd_assign()
294 	if (!kvm_arch_irqfd_allowed(kvm, args))  in kvm_irqfd_assign()
301 	irqfd->kvm = kvm;  in kvm_irqfd_assign()
334 		mutex_lock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
337 				    &kvm->irqfds.resampler_list, link) {  in kvm_irqfd_assign()
349 				mutex_unlock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
353 			resampler->kvm = kvm;  in kvm_irqfd_assign()
359 			list_add(&resampler->link, &kvm->irqfds.resampler_list);  in kvm_irqfd_assign()
360 			kvm_register_irq_ack_notifier(kvm,  in kvm_irqfd_assign()
366 		synchronize_srcu(&kvm->irq_srcu);  in kvm_irqfd_assign()
368 		mutex_unlock(&kvm->irqfds.resampler_lock);  in kvm_irqfd_assign()
378 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
381 	list_for_each_entry(tmp, &kvm->irqfds.items, list) {  in kvm_irqfd_assign()
386 		spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
390 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_irqfd_assign()
391 	irqfd_update(kvm, irqfd);  in kvm_irqfd_assign()
393 	list_add_tail(&irqfd->list, &kvm->irqfds.items);  in kvm_irqfd_assign()
395 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_assign()
420 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irqfd_assign()
446 bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)  in kvm_irq_has_notifier()  argument
451 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_irq_has_notifier()
452 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);  in kvm_irq_has_notifier()
454 		hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,  in kvm_irq_has_notifier()
457 				srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irq_has_notifier()
461 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_irq_has_notifier()
467 void kvm_notify_acked_gsi(struct kvm *kvm, int gsi)  in kvm_notify_acked_gsi()  argument
471 	hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,  in kvm_notify_acked_gsi()
477 void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)  in kvm_notify_acked_irq()  argument
483 	idx = srcu_read_lock(&kvm->irq_srcu);  in kvm_notify_acked_irq()
484 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);  in kvm_notify_acked_irq()
486 		kvm_notify_acked_gsi(kvm, gsi);  in kvm_notify_acked_irq()
487 	srcu_read_unlock(&kvm->irq_srcu, idx);  in kvm_notify_acked_irq()
490 void kvm_register_irq_ack_notifier(struct kvm *kvm,  in kvm_register_irq_ack_notifier()  argument
493 	mutex_lock(&kvm->irq_lock);  in kvm_register_irq_ack_notifier()
494 	hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list);  in kvm_register_irq_ack_notifier()
495 	mutex_unlock(&kvm->irq_lock);  in kvm_register_irq_ack_notifier()
496 	kvm_arch_post_irq_ack_notifier_list_update(kvm);  in kvm_register_irq_ack_notifier()
499 void kvm_unregister_irq_ack_notifier(struct kvm *kvm,  in kvm_unregister_irq_ack_notifier()  argument
502 	mutex_lock(&kvm->irq_lock);  in kvm_unregister_irq_ack_notifier()
504 	mutex_unlock(&kvm->irq_lock);  in kvm_unregister_irq_ack_notifier()
505 	synchronize_srcu(&kvm->irq_srcu);  in kvm_unregister_irq_ack_notifier()
506 	kvm_arch_post_irq_ack_notifier_list_update(kvm);  in kvm_unregister_irq_ack_notifier()
511 kvm_eventfd_init(struct kvm *kvm)  in kvm_eventfd_init()  argument
514 	spin_lock_init(&kvm->irqfds.lock);  in kvm_eventfd_init()
515 	INIT_LIST_HEAD(&kvm->irqfds.items);  in kvm_eventfd_init()
516 	INIT_LIST_HEAD(&kvm->irqfds.resampler_list);  in kvm_eventfd_init()
517 	mutex_init(&kvm->irqfds.resampler_lock);  in kvm_eventfd_init()
519 	INIT_LIST_HEAD(&kvm->ioeventfds);  in kvm_eventfd_init()
527 kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd_deassign()  argument
536 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_deassign()
538 	list_for_each_entry_safe(irqfd, tmp, &kvm->irqfds.items, list) {  in kvm_irqfd_deassign()
553 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_deassign()
567 kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args)  in kvm_irqfd()  argument
573 		return kvm_irqfd_deassign(kvm, args);  in kvm_irqfd()
575 	return kvm_irqfd_assign(kvm, args);  in kvm_irqfd()
583 kvm_irqfd_release(struct kvm *kvm)  in kvm_irqfd_release()  argument
587 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irqfd_release()
589 	list_for_each_entry_safe(irqfd, tmp, &kvm->irqfds.items, list)  in kvm_irqfd_release()
592 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irqfd_release()
606 void kvm_irq_routing_update(struct kvm *kvm)  in kvm_irq_routing_update()  argument
610 	spin_lock_irq(&kvm->irqfds.lock);  in kvm_irq_routing_update()
612 	list_for_each_entry(irqfd, &kvm->irqfds.items, list) {  in kvm_irq_routing_update()
613 		irqfd_update(kvm, irqfd);  in kvm_irq_routing_update()
618 					irqfd->kvm, irqfd->producer->irq,  in kvm_irq_routing_update()
625 	spin_unlock_irq(&kvm->irqfds.lock);  in kvm_irq_routing_update()
760 ioeventfd_check_collision(struct kvm *kvm, struct _ioeventfd *p)  in ioeventfd_check_collision()  argument
764 	list_for_each_entry(_p, &kvm->ioeventfds, list)  in ioeventfd_check_collision()
785 static int kvm_assign_ioeventfd_idx(struct kvm *kvm,  in kvm_assign_ioeventfd_idx()  argument
816 	mutex_lock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
819 	if (ioeventfd_check_collision(kvm, p)) {  in kvm_assign_ioeventfd_idx()
826 	ret = kvm_io_bus_register_dev(kvm, bus_idx, p->addr, p->length,  in kvm_assign_ioeventfd_idx()
831 	kvm_get_bus(kvm, bus_idx)->ioeventfd_count++;  in kvm_assign_ioeventfd_idx()
832 	list_add_tail(&p->list, &kvm->ioeventfds);  in kvm_assign_ioeventfd_idx()
834 	mutex_unlock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
839 	mutex_unlock(&kvm->slots_lock);  in kvm_assign_ioeventfd_idx()
849 kvm_deassign_ioeventfd_idx(struct kvm *kvm, enum kvm_bus bus_idx,  in kvm_deassign_ioeventfd_idx()  argument
861 	mutex_lock(&kvm->slots_lock);  in kvm_deassign_ioeventfd_idx()
863 	list_for_each_entry_safe(p, tmp, &kvm->ioeventfds, list) {  in kvm_deassign_ioeventfd_idx()
876 		kvm_io_bus_unregister_dev(kvm, bus_idx, &p->dev);  in kvm_deassign_ioeventfd_idx()
877 		bus = kvm_get_bus(kvm, bus_idx);  in kvm_deassign_ioeventfd_idx()
885 	mutex_unlock(&kvm->slots_lock);  in kvm_deassign_ioeventfd_idx()
892 static int kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_deassign_ioeventfd()  argument
895 	int ret = kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_deassign_ioeventfd()
898 		kvm_deassign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);  in kvm_deassign_ioeventfd()
904 kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_assign_ioeventfd()  argument
934 	ret = kvm_assign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_assign_ioeventfd()
942 		ret = kvm_assign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);  in kvm_assign_ioeventfd()
950 	kvm_deassign_ioeventfd_idx(kvm, bus_idx, args);  in kvm_assign_ioeventfd()
956 kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)  in kvm_ioeventfd()  argument
959 		return kvm_deassign_ioeventfd(kvm, args);  in kvm_ioeventfd()
961 	return kvm_assign_ioeventfd(kvm, args);  in kvm_ioeventfd()