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Commit ba1aefcd authored by Andrey Smetanin's avatar Andrey Smetanin Committed by Paolo Bonzini
Browse files

kvm/eventfd: factor out kvm_notify_acked_gsi() 



Factor out kvm_notify_acked_gsi() helper to iterate over EOI listeners
and notify those matching the given gsi.

It will be reused in the upcoming Hyper-V SynIC implementation.

Signed-off-by: default avatarAndrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: default avatarRoman Kagan <rkagan@virtuozzo.com>
Signed-off-by: default avatarDenis V. Lunev <den@openvz.org>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
CC: "K. Y. Srinivasan" <kys@microsoft.com>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 351dc647

include/linux/kvm_host.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -829,6 +829,7 @@ int kvm_set_irq_inatomic(struct kvm *kvm, int irq_source_id, u32 irq, int level) 
int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,

int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,

		int irq_source_id, int level, bool line_status);

		int irq_source_id, int level, bool line_status);

bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin);

bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin);

void kvm_notify_acked_gsi(struct kvm *kvm, int gsi);

void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);

void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);

void kvm_register_irq_ack_notifier(struct kvm *kvm,

void kvm_register_irq_ack_notifier(struct kvm *kvm,

				   struct kvm_irq_ack_notifier *kian);

				   struct kvm_irq_ack_notifier *kian);

virt/kvm/eventfd.c

+11 −5
Original line number Original line Diff line number Diff line
@@ -451,9 +451,18 @@ bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin) 
}

}

EXPORT_SYMBOL_GPL(kvm_irq_has_notifier);

EXPORT_SYMBOL_GPL(kvm_irq_has_notifier);





void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)

void kvm_notify_acked_gsi(struct kvm *kvm, int gsi)

{

{

	struct kvm_irq_ack_notifier *kian;

	struct kvm_irq_ack_notifier *kian;



	hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,

				 link)

		if (kian->gsi == gsi)

			kian->irq_acked(kian);

}



void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)

{

	int gsi, idx;

	int gsi, idx;





	trace_kvm_ack_irq(irqchip, pin);

	trace_kvm_ack_irq(irqchip, pin);
@@ -461,10 +470,7 @@ void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin) 
	idx = srcu_read_lock(&kvm->irq_srcu);

	idx = srcu_read_lock(&kvm->irq_srcu);

	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);

	gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);

	if (gsi != -1)

	if (gsi != -1)

		hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,

		kvm_notify_acked_gsi(kvm, gsi);

					 link)

			if (kian->gsi == gsi)

				kian->irq_acked(kian);

	srcu_read_unlock(&kvm->irq_srcu, idx);

	srcu_read_unlock(&kvm->irq_srcu, idx);

}

}