My Enviroment:
OS: Ubuntu 18.04
Kernel: 4.15.0-51-generic
SeaBIOS: 1.10.2-1ubuntu1
I have successfully run an Win7 libvirt instance on Intel i3-7130U Ubuntu
18.04 host with IGD card passthrough by VFIO in legacy mode.
Aslo I need to passthrough the USB mouse and keyboard to the Windows VM. I
tried passthrough only mouse/keyboard device with:
<hostdev mode='subsystem' type='usb' managed='yes'>
<source>
<vendor id='0x1c4f'/>
<product id='0x0002'/>
<address bus='1' device='3'/>
</source>
<alias name='hostdev5'/>
<address type='usb' bus='0' port='1'/>
</hostdev>
<hostdev mode='subsystem' type='usb' managed='yes'>
<source>
<vendor id='0x093a'/>
<product id='0x2521'/>
<address bus='1' device='2'/>
</source>
<alias name='hostdev6'/>
<address type='usb' bus='0' port='2'/>
</hostdev>
And also tried to passthrough whole xhci usb controller to Windows VM with:
<hostdev mode='subsystem' type='pci' managed='no'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x00' slot='0x14' function='0x0'/>
</source>
<alias name='hostdev5'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0b'
function='0x0'/>
</hostdev>
<hostdev mode='subsystem' type='pci' managed='no'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x00' slot='0x14' function='0x2'/>
</source>
<alias name='hostdev6'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x0c'
function='0x0'/>
</hostdev>
But there're same problems that after Windows powered on with mouse cursor
displayed on the screen, I need to wait for 5~10 seconds to move the mouse
cursor and use the keyboard shortcut keys.
It seems that USB mouse/keyboard only can be used after USB mouse/keyboard
drivers are loaded in Windows VM? Or the qemu SeaBIOS does not support USB
mouse/keyboard?
The qemu commandline part of my libvirt.xml:
<qemu:commandline>
<qemu:arg value='-set'/>
<qemu:arg value='device.hostdev0.x-igd-opregion=on'/>
<qemu:arg value='-set'/>
<qemu:arg value='device.hostdev0.x-igd-gms=1'/>
<qemu:arg value='-bios'/>
<qemu:arg value='/usr/share/seabios/bios.bin'/>
<qemu:arg value='-chardev'/>
<qemu:arg value='file,id=seabios,path=/tmp/bios.log'/>
<qemu:arg value='-device'/>
<qemu:arg value='isa-debugcon,iobase=0x402,chardev=seabios'/>
</qemu:commandline>
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