kvm_assign_ioeventfd_idx  934 virt/kvm/eventfd.c 	ret = kvm_assign_ioeventfd_idx(kvm, bus_idx, args);
kvm_assign_ioeventfd_idx  942 virt/kvm/eventfd.c 		ret = kvm_assign_ioeventfd_idx(kvm, KVM_FAST_MMIO_BUS, args);