[libvirt] PCI Passthrough

[Aaron Clausen]

I'm having a heck of a time trying to figure out how to do PCI
passthrough for a PCI SCSI controller.  I need, if at all possible, to
access it so that I can use a SCSI tape drive with a Windows Server
2000 guest.  This is xml config I have:

<domain type='kvm'>
  <name>testserver</name>
  <uuid>f75a2f63-e1bd-72a5-6134-3fcafbcdb970</uuid>
  <memory>524288</memory>
  <currentMemory>524288</currentMemory>
  <vcpu>1</vcpu>
  <os>
    <type arch='x86_64' machine='pc'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <pae/>
  </features>
  <clock offset='localtime'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/bin/kvm</emulator>
    <disk type='file' device='disk'>
      <source file='/var/lib/libvirt/images/testserver.img'/>
      <target dev='hda' bus='ide'/>
    </disk>
    <disk type='block' device='cdrom'>
      <source dev='/dev/cdrom'/>
      <target dev='hdc' bus='ide'/>
      <readonly/>
    </disk>
    <interface type='bridge'>
      <mac address='54:52:00:50:03:08'/>
      <source bridge='br0'/>
      <target dev='vnet2'/>
    </interface>
    <serial type='pty'>
      <source path='/dev/pts/7'/>
      <target port='0'/>
    </serial>
    <console type='pty' tty='/dev/pts/7'>
      <source path='/dev/pts/7'/>
      <target port='0'/>
    </console>
    <input type='tablet' bus='usb'/>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' keymap='en-us'/>
  </devices>
</domain>


-- 
Aaron Clausen
mightymartianca at gmail.com