Re: [Qemu-devel] [libvirt] [PATCH v7 0/4] Add Mediated device support

[John Ferlan]

>>> After creating the vGPU, if required by the host driver, all the other
>>> type ids would disappear from "virsh nodedev-dumpxml pci_0000_86_00_0" too.
>>
>> Not wanting to make assumptions, but this reads as if I create one type
>> 11 vGPU, then I can create no others on the host.  Maybe I'm reading it
>> wrong - it's been a long week.
> 
> Correct, at least for NVIDIA.
> 

OK, but so what am I missing vis-a-vis the groups conversation?  Sounds
like multiple vGPU's are being combined, but if only one can be created.
I think this is where I got confused while reading...

>> PCI devices have the "managed='yes|no'" attribute as well. That's what
>> determines whether the device is to be detached from the host or not.
>> That's been something very painful to manage for vfio and well libvirt!
> 
> mdevs do not exist on the host (they do not have a driver on the host
> because they are not PCI devices) so they do need any management.  At
> least I hope that's good news. :)
> 

Laine was more eloquent than I on this...

John