Sheng Yang wrote:
The function is used to dispatch MSI to lapic according to MSI message address and message data.+ + deliver_bitmask = kvm_ioapic_get_delivery_bitmask(ioapic, + dest_id, dest_mode); + switch (delivery_mode) { + case MSI_DATA_DELIVERY_LOWPRI: + vcpu = kvm_get_lowest_prio_vcpu(ioapic->kvm, vector, + deliver_bitmask); + if (vcpu != NULL) + kvm_apic_set_irq(vcpu, vector, trig_mode); + else + printk(KERN_INFO "kvm: null lowest priority vcpu!\n"); + break; + case MSI_DATA_DELIVERY_FIXED: + for (vcpu_id = 0; deliver_bitmask != 0; vcpu_id++) { + if (!(deliver_bitmask & (1 << vcpu_id))) + continue; + deliver_bitmask &= ~(1 << vcpu_id); + vcpu = ioapic->kvm->vcpus[vcpu_id]; + if (vcpu) + kvm_apic_set_irq(vcpu, vector, trig_mode); + } + break; + default:
This duplicates the ioapic code. That's fine for now, but eventually we'll want to refactor this.
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