[vfio-users] Virtual GPU support in Kernel 4.10

[Patrick O'Callaghan]

On Mon, 2017-02-20 at 09:17 -0700, Alex Williamson wrote:
> > Nevertheless it could be appropriate for certain use cases. I'm
> > thinking DirectX games that are not too demanding but won't run under
> > the KVM emulated GPU, assuming such things exist. It would presumably
> > also be a lot easier to set up. I for one am still looking at VFIO with
> > a certain amount of trepidation.
> 
> The vGPU infrastructure in v4.10 is effectively just a software
> extension of VFIO to expose software constructed devices to the user
> rather than physical devices.  You're relying far more on a well
> crafted and robust vendor driver with mediated device based vGPUs than
> the hardware exposure and isolation of physical devices with VFIO.  If
> you think physical IGD assignment is trepidatious, perhaps you want to
> stand clear of KVMGT for a while...

I'm sure you're right, and I don't think my current system (i7-3770K)
would support KVMGT anyway, however I'm encouraged by the prospect that
somewhere down the line all this could become more end-user friendly
than it currently is.

poc