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QEMU 2.12 introduced a new type of display for mediated devices using vfio-pci backend which allows a mediated device to be used as a VGA compatible device as an alternative to an emulated video device. QEMU exposes this feature via a vfio device property 'display' with supported values 'on/off/auto' (libvirt will default to 'off'). This patch adds the necessary bits to domain config handling in order to expose this feature. Since there's no convenient way for libvirt to come up with usable defaults for the display setting, simply because libvirt is not able to figure out which of the display implementations - dma-buf which requires OpenGL support vs vfio regions which doesn't need OpenGL (works with OpenGL enabled too) - the underlying mdev uses. Reviewed-by: Ján Tomko <jtomko@redhat.com> Signed-off-by: Erik Skultety <eskultet@redhat.com>
48 lines
1.7 KiB
XML
48 lines
1.7 KiB
XML
<domain type='qemu'>
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<name>QEMUGuest2</name>
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<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
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<memory unit='KiB'>219136</memory>
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<currentMemory unit='KiB'>219136</currentMemory>
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<vcpu placement='static'>1</vcpu>
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<os>
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<type arch='i686' machine='pc'>hvm</type>
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<boot dev='hd'/>
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</os>
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<clock offset='utc'/>
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<on_poweroff>destroy</on_poweroff>
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<on_reboot>restart</on_reboot>
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<on_crash>destroy</on_crash>
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<devices>
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<emulator>/usr/bin/qemu-system-i686</emulator>
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<disk type='block' device='disk'>
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<driver name='qemu' type='raw'/>
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<source dev='/dev/HostVG/QEMUGuest2'/>
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<target dev='hda' bus='ide'/>
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<address type='drive' controller='0' bus='0' target='0' unit='0'/>
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</disk>
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<controller type='usb' index='0'>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
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</controller>
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<controller type='pci' index='0' model='pci-root'/>
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<controller type='ide' index='0'>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
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</controller>
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<input type='mouse' bus='ps2'/>
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<input type='keyboard' bus='ps2'/>
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<graphics type='vnc' port='-1' autoport='yes'>
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<listen type='address'/>
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</graphics>
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<video>
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<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
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</video>
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<hostdev mode='subsystem' type='mdev' managed='no' model='vfio-pci' display='on'>
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<source>
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<address uuid='53764d0e-85a0-42b4-af5c-2046b460b1dc'/>
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</source>
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<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
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</hostdev>
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<memballoon model='none'/>
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</devices>
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</domain>
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