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

[thibaut noah]

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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