[libvirt-users] Cannot Write xvga=yes in xml file
Rogue S.T
15700157322 at 163.com
Fri Jan 5 07:58:37 UTC 2018
Yes, I can use guest with this way, But when i hot-add my graphics card , Guest will reboot.
So i want to try it with <hostdev>. Somehow , If i use "hostdev" without xvga , my screen will be black.
If we have no hostdev, do you have other methods can help me to use hot-plug my graphics card?
At 2018-01-04 23:27:52, "Laine Stump" <laine at redhat.com> wrote:
>On 12/20/2017 09:40 PM, Rogue S.T wrote:
>> Hello,my system info:
>> virsh verison
>> Compiled against library: libvirt 3.9.0
>> Using library: libvirt 3.9.0
>> Using API: QEMU 3.9.0
>> Running hypervisor: QEMU 2.10.90
>> And i want to pass through my gpu to my window 7 guest with <hostdev>,
>> next line is comand i use:
>> <hostdev mode='subsystem' type='pci' managed='yes' xvga='yes'>
>
>
>I'm not sure where you got the idea that libvirt's <hostdev> element had
>an attribute called "xvga", but it doesn't.
>
>If your GPU needs to have QEMU's xvga setting turned on, this posting
>from ALex's blog explains how to do it using libvirt's QEMU commandline
>passthrough:
>
>http://vfio.blogspot.com/2016/09/passing-qemu-command-line-options.html
>
>I would recommend reading all the other postings in his blog as well, as
>they are very informative.
>
>> <source>
>> <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
>> </source>
>> <rom bar='on' file='/root/gpu.dump'/>
>> <address type='pci' domain='0x0000' bus='0x00' slot='0x07'
>> function='0x0'/>
>> </hostdev>
>> But i get this error:
>> XML document failed to validate against schema: Unable to
>> validate doc against /ocl/share/libvirt/schemas/domain.rng
>> Extra element devices in interleave
>> Element domain failed to validate content
>> If i delete xvga='yes',it's ok, but i get a other question, my display
>> is not light.
>>
>>
>>
>>
>>
>>
>>
>>
>>
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>>
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