10:40 a.m.
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'>
<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.
9:27 a.m.
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.
_______________________________________________
libvirt-users mailing list
libvirt-users(a)redhat.com
https://www.redhat.com/mailman/listinfo/libvirt-users
3:58 p.m.
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(a)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.
>
>
>
>
>
>
>
>
>
> _______________________________________________
> libvirt-users mailing list
> libvirt-users(a)redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users
>
11:21 a.m.
(Please don't top-post your replies on this list. Post them inline with
the text you are responding to)
On 01/05/2018 02:58 AM, Rogue S.T wrote:
Yes, I can use guest with this way, But when i hot-add my graphics
card
, Guest will reboot.
It's very .... "ambitious" to expect hot-plug of a vfio-assigned
graphics card to work properly. I doubt that has been tested much, if at
all - vfio and QEMU might handle it properly, but it's very likely that
the guest OS would not.
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?
I didn't say there is no <hostdev>, I said that the <hostdev> element
has no attribute called "xvga".
QEMU itself *does* have a commandline option called "xvga" though, and
that can be set using libvirt's "QEMU commandline passthrough",
following the directions on the page that I linked in my original
response. Of course, QEMU commandline passthrough can't be used when
hot-plugging devices - maybe that's what you're trying to point out; if
that's really your problem, then there is no solution (other than to not
hot-plug the GPU).
At 2018-01-04 23:27:52, "Laine Stump" <laine(a)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.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> libvirt-users mailing list
>> libvirt-users(a)redhat.com
>> https://www.redhat.com/mailman/listinfo/libvirt-users
>>
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participants (2)
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Laine Stump -
Rogue S.T