sorry for missing some information. I checkd the device that : # readlink /sys/bus/pci/devices/0000\:00\:19.0/driver ../../../bus/pci/drivers/pci-stub
the device has been already claimed by pci-stub and under the control of pci_stub. so the reason that can't up the eth in VM maybe has nothing to do with the libvirt version. After doing the first three steps:How_to_assign_devices_with_VT-d_in_KVM<http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM> ( *1. Modifying kernel config **2. build kernel **3. reboot and verify that your system has IOMMU support* ), I use "virsh create vt_d.xml" instead of the ubind/bind and assign device. (the kvm and kvm_intel has already been loaded) should I do something others to use the VT_d? best regards, qinguan 在 2011年5月4日 下午2:31，guan qin <[email protected]>写道： > Hi，the libvirt version is 0.8.3, I just used "apt-get install libvirt-bin" > to install it under debian6.0.1a. > Is it necessary to install 0.8.4 or higher version ? > > Best regards, > qinguan > > > 在 2011年5月3日 下午4:28，Osier Yang <[email protected]>写道： > >> 于 2011年05月03日 15:38, guan qin 写道: >> >> > Thanks a lot for your reply sincerely! >> > Actually ,if I do as what >> > http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVMsaid,: >> > " >> > # echo "8086 10b9" > /sys/bus/pci/drivers/pci-stub/new_id >> > # echo 0000:01:00.0 > /sys/bus/pci/devices/0000:01:00.0/driver/unbind >> > # echo 0000:01:00.0 > /sys/bus/pci/drivers/pci-stub/bind >> > " >> > Then I can assign a NIC to the VM ,and the VM also can use the NIC to >> > access the network. >> > But , according the libvirt guide that >> > http://libvirt.org/formatdomain.html#elementsUSB shows: >> > " >> > When |managed| is "yes" for a PCI device, it is detached from the host >> > before being passed on to the guest. >> > " >> > So should I still "unbind " the device from the host OS driver first ? >> > If that ,What's the "detached" meaning ? thanks. >> > best regards, >> > qinguan >> >> libvirt trys to detach the PCI device from host as preparation when >> starting up the domain, and it also binds the device to pci_stub >> driver, so it's strange that you need to do it manually? what's >> your libvirt version? >> >> > 在 2011年5月3日 上午8:47，David White <[email protected] >> > <mailto:[email protected]>>写道： >> > >> > >> > did you 'unbind' the device from the host OS driver? >> > >> > >> > On 05/01/2011 01:38 AM, guan qin wrote: >> >> Hi, >> >> >> >> I encounter a problem that the eth can't be up in the VM by using >> >> VT-d. >> >> I boot the VM using "virsh create vt_d.xml". >> >> The VM could recongize the NIC which was assigned .then I do in VM >> >> as follows: >> >> #cat /sys/class/net/eth0/operstate >> >> down >> >> #ifconfig eth0 up >> >> #cat /sys/class/net/eth0/operstate >> >> down >> >> #ficonfig eth 10.100.0.5 >> >> #cat /sys/class/net/eth0/operstate >> >> down >> >> more system information is attached.(uname 、ifconfig 、lspci、 >> >> cmdline...) >> >> >> >> I can't figure out the reason why the eth is still down? can >> >> anyone help me ? >> >> >> >> best regards, >> >> qinguan >> >> >> >> >> >> >> >> vt_d.xml: >> >> <domain type='kvm'> >> >> <name>test</name> >> >> <description>just test using sriov!</description> >> >> <os> >> >> <type>hvm</type> >> >> <boot dev='hd'/> >> >> </os> >> >> <memory>524288</memory> >> >> <currentMemory>524288</currentMemory> >> >> <on_poweroff>destroy</on_poweroff> >> >> <on_reboot>restart</on_reboot> >> >> <on_crash>restart</on_crash> >> >> >> >> <features><pae/><acpi/><apic/></features> >> >> <clock offset='utc'/> >> >> <devices> >> >> <input type='mouse' bus='usb'/> >> >> <disk type='file' device='disk'> >> >> <source file='/home/qinguan/exp/ubuntu_1.img'/> >> >> <target dev='hda' bus='virtio'/> >> >> </disk> >> >> <emulator>/usr/bin/kvm</emulator> >> >> <graphics type='vnc' port='-1'/> >> >> <hostdev mode='subsystem' type='pci' managed='yes'> >> >> <source> >> >> <address bus='0x0' slot='0x19' function='0x0'/> >> >> </source> >> >> </hostdev> >> >> </devices> >> >> </domain> >> >> >> >> >> >> _______________________________________________ >> >> libvirt-users mailing list >> >> [email protected] <mailto:[email protected]> >> >> https://www.redhat.com/mailman/listinfo/libvirt-users >> > >> > >> > >> > >> > _______________________________________________ >> > libvirt-users mailing list >> > [email protected] >> > https://www.redhat.com/mailman/listinfo/libvirt-users >> >> >
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