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Advertise gsi routing and set up irqchip routing entries for GIC SPIs. This is not mandated as long as MSI routing is not used (because the kernel sets a default irqchip routing table). However once MSI routing gets used (for VIRTIO-PCI vhost for example), the first call to KVM_SET_GSI_ROUTING overrides the kernel default irqchip table. If no routing entry exists for the GSI, any IRQFD signaling for this GSI will fail. Signed-off-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1474616617-366-2-git-send-email-eric.auger@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>