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    did you 'unbind' the device from the host OS driver?<br>
    <br>
    On 05/01/2011 01:38 AM, guan qin wrote:
    <blockquote
      cite="mid:BANLkTi=2_EHWtVc-+WL1Mp9v=ErYtRNotA@mail.gmail.com"
      type="cite">Hi,<br>
      <br>
      I encounter a problem that the eth can't be up in the VM by using
      VT-d.<br>
      I boot the VM using "virsh create vt_d.xml".<br>
      The VM could recongize the NIC which was assigned .then I do in VM
      as follows:<br>
      #cat /sys/class/net/eth0/operstate<br>
      down<br>
      #ifconfig eth0 up<br>
      #cat /sys/class/net/eth0/operstate<br>
      down<br>
      #ficonfig eth 10.100.0.5<br>
      #cat /sys/class/net/eth0/operstate<br>
      down<br>
      more system information is attached.(uname ¡¢ifconfig
      ¡¢lspci¡¢cmdline...)<br>
      <br>
      I can't figure out the reason why the eth is still down? can
      anyone help me ?<br>
      <br>
      best regards,<br>
      qinguan<br>
      <br>
      <br>
      <br>
      vt_d.xml:<br>
      <domain type='kvm'><br>
          <name>test</name><br>
          <description>just test using sriov!</description><br>
          <os><br>
              <type>hvm</type><br>
              <boot dev='hd'/><br>
          </os><br>
          <memory>524288</memory><br>
          <currentMemory>524288</currentMemory><br>
          <on_poweroff>destroy</on_poweroff><br>
          <on_reboot>restart</on_reboot><br>
          <on_crash>restart</on_crash><br>
        <br>
         
      <features><pae/><acpi/><apic/></features><br>
          <clock offset='utc'/><br>
          <devices><br>
              <input type='mouse' bus='usb'/>      <br>
              <disk type='file' device='disk'><br>
                  <source file='/home/qinguan/exp/ubuntu_1.img'/><br>
                  <target dev='hda' bus='virtio'/><br>
              </disk>    <br>
              <emulator>/usr/bin/kvm</emulator><br>
              <graphics type='vnc' port='-1'/>      <br>
              <hostdev mode='subsystem' type='pci' managed='yes'><br>
                  <source><br>
                      <address bus='0x0' slot='0x19'
      function='0x0'/><br>
                  </source><br>
              </hostdev>     <br>
          </devices><br>
      </domain><br>
      <br>
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