1common-obj-y += virtio-rng.o 2common-obj-$(CONFIG_VIRTIO_PCI) += virtio-pci.o 3common-obj-y += virtio-bus.o 4common-obj-y += virtio-mmio.o 5 6obj-y += virtio.o virtio-balloon.o 7obj-$(CONFIG_LINUX) += vhost.o vhost-backend.o vhost-user.o 8