[vfio-users] passthrough usb controler pci-e card ?

[thibaut noah]

Hum, the card doesn't need linux support right? Since it will only be use
by the vm

2016-01-15 11:41 GMT+01:00 Quentin Deldycke <quentindeldycke at gmail.com>:

> Don't know if these things are affected by pci reset.
>
> I did not encounter such problems.
>
> --
> Deldycke Quentin
>
>
> On 15 January 2016 at 11:40, thibaut noah <thibaut.noah at gmail.com> wrote:
>
>> Seems that i cannot boot the vm with the card attached through the xml
>> file in libvirt, i stay on the loading screen (tianocore whathever).
>> Anybody knows this issue?
>>
>> 2016-01-15 10:59 GMT+01:00 thibaut noah <thibaut.noah at gmail.com>:
>>
>>> thanks for the help, the output after launching the script is totally
>>> weird :
>>> new_id invalid argument
>>> bind no such device
>>>
>>> But the kernel in use is vfio-pci, gonna try the vm asap, thanks for the
>>> help :)
>>>
>>> 2016-01-15 10:50 GMT+01:00 Quentin Deldycke <quentindeldycke at gmail.com>:
>>>
>>>> Ah no, sorry -_-'
>>>>
>>>> This is the vendor id / product id of the pci device.
>>>>
>>>> This part could be ommited, but not sure. I let it in the script so
>>>> better that it stay there =)
>>>>
>>>> --
>>>> Deldycke Quentin
>>>>
>>>>
>>>> On 15 January 2016 at 10:48, thibaut noah <thibaut.noah at gmail.com>
>>>> wrote:
>>>>
>>>>> Just so we're clear when you do echo "1b21 0612" | sudo tee -a
>>>>> /sys/bus/pci/drivers/vfio-pci/new_id
>>>>> you're creating a new id for the device in vfio-pci right? This number
>>>>> can be totally random?
>>>>>
>>>>> 2016-01-15 10:44 GMT+01:00 Quentin Deldycke <quentindeldycke at gmail.com
>>>>> >:
>>>>>
>>>>>> To do this dynamically, i use scripts which in sum do:
>>>>>>
>>>>>> Unbinding:
>>>>>> echo 0000:0a:00.0 | sudo tee
>>>>>> /sys/bus/pci/devices/0000:0a:00.0/driver/unbind
>>>>>> It means => on the driver actually used by 0000:0a:00.0, unbind the
>>>>>> device 0000:0a:00.0
>>>>>>
>>>>>> Binding to vfio:
>>>>>> echo "1b21 0612" | sudo tee -a /sys/bus/pci/drivers/vfio-pci/new_id
>>>>>> echo "0000:0a:00:0" | sudo tee -a /sys/bus/pci/drivers/vfio-pci/bind
>>>>>>
>>>>>>
>>>>>> I use them for:
>>>>>>  - nvme device
>>>>>>  - sata controller
>>>>>>
>>>>>> You could do same for GPU. But actually, it break dpm, so you have
>>>>>> shitty performance.
>>>>>> It is usefull for me to bind back to host as the nvme device seems to
>>>>>> be lost with vfio-pci and host sleep. (can be recovered with loading nvme)
>>>>>>
>>>>>> --
>>>>>> Deldycke Quentin
>>>>>>
>>>>>>
>>>>>> On 15 January 2016 at 10:37, thibaut noah <thibaut.noah at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> I actually have no clue about how to unbind the device from xhci
>>>>>>> driver and bind it to vfio.
>>>>>>> It was explain in some tutorials for graphic cards but not for other
>>>>>>> devices so i'm totally lost.
>>>>>>>
>>>>>>>
>>>>>>> 2016-01-15 10:35 GMT+01:00 Quentin Deldycke <
>>>>>>> quentindeldycke at gmail.com>:
>>>>>>>
>>>>>>>> There is no difference.
>>>>>>>>
>>>>>>>> lspci to find your card, you bind it to vfio-pci and use
>>>>>>>> virt-manager to add the card.
>>>>>>>>
>>>>>>>> Should work out of the box. Juste take care that this device is
>>>>>>>> unbind from your xhci driver on host. then binded to vfio-pci.
>>>>>>>>
>>>>>>>> Take care of the iommu groups like the graphic card.
>>>>>>>>
>>>>>>>> --
>>>>>>>> Deldycke Quentin
>>>>>>>>
>>>>>>>>
>>>>>>>> On 15 January 2016 at 10:32, thibaut noah <thibaut.noah at gmail.com>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> Hello, i'm currently trying to passthrough an usb card controler
>>>>>>>>> to solve my usb issues (like audio glitches on headset and allow plug and
>>>>>>>>> play), problem is it seems that no one did tutorials for this and i'm a bit
>>>>>>>>> lost, only tutorial i found was to passthrough an internal usb controler.
>>>>>>>>> Anybody got some documentation to share?
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> vfio-users mailing list
>>>>>>>>> vfio-users at redhat.com
>>>>>>>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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