-[0000:00]-+-00.0  Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller
           +-01.0-[01]--+-00.0  Red Hat, Inc. Virtio memory balloon
           |            +-00.1  Red Hat, Inc. Virtio RNG
           |            +-00.2  Red Hat, Inc. Virtio input
           |            +-00.3  Red Hat, Inc. Virtio input
           |            +-00.4  Red Hat, Inc. Virtio socket
           |            +-00.5  Red Hat, Inc. Virtio console
           |            \-00.6  Red Hat, Inc. QEMU XHCI Host Controller
           +-01.1-[02]----00.0  Red Hat, Inc. Virtio SCSI
           +-01.2-[03]--+-00.0  Red Hat, Inc. Virtio filesystem
           |            \-00.1  Red Hat, Inc. Virtio file system
           +-01.3-[04]----00.0  Red Hat, Inc. Virtio GPU
           +-01.4-[05]----00.0  Red Hat, Inc. Virtio network device
           +-01.5-[06]----00.0  Red Hat, Inc. Virtio network device
           +-01.6-[07]----00.0  Red Hat, Inc. Virtio network device
           +-01.7-[08]--
           +-02.0-[09]--
           +-02.1-[0a]--
           +-02.2-[0b]--
           +-1f.0  Intel Corporation 82801IB (ICH9) LPC Interface Controller
           +-1f.2  Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA Controller [AHCI mode]
           \-1f.3  Intel Corporation 82801I (ICH9 Family) SMBus Controller