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Commit f33143d8 authored by Andrey Smetanin's avatar Andrey Smetanin Committed by Paolo Bonzini
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kvm/irqchip: allow only multiple irqchip routes per GSI 



Any other irq routing types (MSI, S390_ADAPTER, upcoming Hyper-V
SynIC) map one-to-one to GSI.

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 c9a5ecca

virt/kvm/irqchip.c

+3 −3
Original line number Diff line number Diff line
@@ -144,11 +144,11 @@ static int setup_routing_entry(struct kvm_irq_routing_table *rt, 


	/*

	 * Do not allow GSI to be mapped to the same irqchip more than once.

	 * Allow only one to one mapping between GSI and MSI.

	 * Allow only one to one mapping between GSI and non-irqchip routing.

	 */

	hlist_for_each_entry(ei, &rt->map[ue->gsi], link)

		if (ei->type == KVM_IRQ_ROUTING_MSI ||

		    ue->type == KVM_IRQ_ROUTING_MSI ||

		if (ei->type != KVM_IRQ_ROUTING_IRQCHIP ||

		    ue->type != KVM_IRQ_ROUTING_IRQCHIP ||

		    ue->u.irqchip.irqchip == ei->irqchip.irqchip)

			return r;