x86/kvm/irq_comm.c

18 #include <trace/events/kvm.h>
31 			   struct kvm *kvm, int irq_source_id, int level,
34 	struct kvm_pic *pic = kvm->arch.vpic;
39 			      struct kvm *kvm, int irq_source_id, int level,
42 	struct kvm_ioapic *ioapic = kvm->arch.vioapic;
47 int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
55 	if (kvm_irq_delivery_to_apic_fast(kvm, src, irq, &r, dest_map))
66 	kvm_for_each_vcpu(i, vcpu, kvm) {
95 		lowest = kvm_get_vcpu(kvm, idx);
104 void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
111 	trace_kvm_msi_set_irq(msg.address_lo | (kvm->arch.x2apic_format ?
114 	irq->dest_id = x86_msi_msg_get_destid(&msg, kvm->arch.x2apic_format);
125 static inline bool kvm_msi_route_invalid(struct kvm *kvm,
128 	return kvm->arch.x2apic_format && (e->msi.address_hi & 0xff);
132 		struct kvm *kvm, int irq_source_id, int level, bool line_status)
136 	if (kvm_msi_route_invalid(kvm, e))
142 	kvm_set_msi_irq(kvm, e, &irq);
144 	return kvm_irq_delivery_to_apic(kvm, NULL, &irq, NULL);
149 		    struct kvm *kvm, int irq_source_id, int level,
155 	return kvm_hv_synic_set_irq(kvm, e->hv_sint.vcpu, e->hv_sint.sint);
160 			      struct kvm *kvm, int irq_source_id, int level,
169 		return kvm_hv_set_sint(e, kvm, irq_source_id, level,
174 		if (kvm_msi_route_invalid(kvm, e))
177 		kvm_set_msi_irq(kvm, e, &irq);
179 		if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r, NULL))
188 		return kvm_xen_set_evtchn_fast(&e->xen_evtchn, kvm);
197 int kvm_request_irq_source_id(struct kvm *kvm)
199 	unsigned long *bitmap = &kvm->arch.irq_sources_bitmap;
202 	mutex_lock(&kvm->irq_lock);
215 	mutex_unlock(&kvm->irq_lock);
220 void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id)
225 	mutex_lock(&kvm->irq_lock);
231 	clear_bit(irq_source_id, &kvm->arch.irq_sources_bitmap);
232 	if (!irqchip_kernel(kvm))
235 	kvm_ioapic_clear_all(kvm->arch.vioapic, irq_source_id);
236 	kvm_pic_clear_all(kvm->arch.vpic, irq_source_id);
238 	mutex_unlock(&kvm->irq_lock);
241 void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
244 	mutex_lock(&kvm->irq_lock);
246 	hlist_add_head_rcu(&kimn->link, &kvm->arch.mask_notifier_list);
247 	mutex_unlock(&kvm->irq_lock);
250 void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
253 	mutex_lock(&kvm->irq_lock);
255 	mutex_unlock(&kvm->irq_lock);
256 	synchronize_srcu(&kvm->irq_srcu);
259 void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
265 	idx = srcu_read_lock(&kvm->irq_srcu);
266 	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);
268 		hlist_for_each_entry_rcu(kimn, &kvm->arch.mask_notifier_list, link)
271 	srcu_read_unlock(&kvm->irq_srcu, idx);
274 bool kvm_arch_can_set_irq_routing(struct kvm *kvm)
276 	return irqchip_in_kernel(kvm);
279 int kvm_set_routing_entry(struct kvm *kvm,
289 		if (irqchip_split(kvm))
317 		if (kvm_msi_route_invalid(kvm, e))
329 		return kvm_xen_setup_evtchn(kvm, e, ue);
338 bool kvm_intr_is_single_vcpu(struct kvm *kvm, struct kvm_lapic_irq *irq,
345 	if (kvm_intr_is_single_vcpu_fast(kvm, irq, dest_vcpu))
348 	kvm_for_each_vcpu(i, vcpu, kvm) {
392 int kvm_setup_default_irq_routing(struct kvm *kvm)
394 	return kvm_set_irq_routing(kvm, default_routing,
400 int kvm_setup_empty_irq_routing(struct kvm *kvm)
402 	return kvm_set_irq_routing(kvm, empty_routing, 0, 0);
405 void kvm_arch_post_irq_routing_update(struct kvm *kvm)
407 	if (!irqchip_split(kvm))
409 	kvm_make_scan_ioapic_request(kvm);
415 	struct kvm *kvm = vcpu->kvm;
421 	idx = srcu_read_lock(&kvm->irq_srcu);
422 	table = srcu_dereference(kvm->irq_routing, &kvm->irq_srcu);
424 			       kvm->arch.nr_reserved_ioapic_pins);
432 			kvm_set_msi_irq(vcpu->kvm, entry, &irq);
441 	srcu_read_unlock(&kvm->irq_srcu, idx);
444 void kvm_arch_irq_routing_update(struct kvm *kvm)
447 	kvm_hv_irq_routing_update(kvm);