[vfio-users] IGD Passthrough - does not work with intel kabylake

[Alex Williamson]

On Fri, 17 Feb 2017 18:31:55 +0100
nicolas prochazka <prochazka.nicolas at gmail.com> wrote:

> Ok,
> however, it works with linux , so it"s a windows drivel issue ?

Linux working would seem to be yet more indication that Intel has
broken their Windows driver, or at least hint that the virtualization
stack is working.  Have you tried all versions of the driver that
support this hardware?  Thanks,

Alex

> 2017-02-17 16:32 GMT+01:00 Alex Williamson <alex.williamson at redhat.com>:
> 
> > On Fri, 17 Feb 2017 10:43:57 +0100
> > nicolas prochazka <prochazka.nicolas at gmail.com> wrote:
> >  
> > > hello again,
> > > How can help you to try to analyse this failure ?  some debug option ?  
> >
> > A Code 43 is the Intel driver finding some error or configuration that
> > it doesn't like.  This is unexpected for IGD and I have no recipe for
> > debugging it.  Theoretically anything Broadwell or newer should be
> > supported in UPT mode (see docs/igd-assign.txt).  This involves running
> > the assigned IGD device as secondary to a primary emulated graphics in
> > the VM.  KVMGT, aka vGPUs, should also work with Broadwell and newer,
> > it's possible Intel has broken some aspect of direct assignment in
> > enabling this new functionality.  Thanks,
> >
> > Alex
> >