Hi gurus on the list, I'm trying to bring up a Linux with virtio vhost backend. My system is running on kernel 2.6.34-rc7, libvirt 0.8.0.
Two questions regarding to vhost: 1) XML format for vhost I didn't find any documents on libvirt.org description the XML or QMU argument format for vhost. According to http://www.linux-kvm.org/page/VhostNet#vhost-net_driver_projects, I tried *domxml-from-native* to convert following qemu argument to XML qemu-system-x86_64 -m 1G disk-c.qcow2 \ -net nic,model=virtio,netdev=foo \ -netdev tap,id=foo,ifname=msttap0,script=/home/mst/ifup,downscript=no,vhost=on But the output clearly ignore the network. <domain type='qemu'> <name>unnamed</name> <uuid>9cc877c1-7ac2-463d-3d3f-fa8f8918fe23</uuid> <memory>1048576</memory> <currentMemory>1048576</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64'>hvm</type> </os> <features> <acpi/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>qemu-system-x86_64</emulator> <input type='mouse' bus='ps2'/> <graphics type='sdl'/> <video> <model type='cirrus' vram='9216' heads='1'/> </video> </devices> </domain> What's the problem here? 2) Virtio driver. It's said that vhost require guest kernel version > 2.6.31 because vhost requires MSI-X. How about frontend of virtio driver? Say I'm running a Windows 2008 (with MSI-X support) + virtio NIC, is it necessary to upgrade frontend driver too? Regards, HUANG, Zhiteng -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
