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

[Alex Williamson]

On Thu, 2 Feb 2017 15:50:54 +0100
nicolas prochazka <prochazka.nicolas at gmail.com> wrote:

> So :
> - Host is now in 4.11 with patch , linux guest always in 4.4.
> -> nothing seems to be change  
> screen is divide into 3.
> 
> - Then after :
> https://lists.nongnu.org/archive/html/qemu-devel/2016-12/msg01600.html
> 
> Screen is now as simple screen, so it's better but :
> - IGD does not work,
> under win10 => driver intel HD620 is under error.

What is the error?  Are you using the driver from Intel or the one that
ships with Windows?

> under linux => as windows, screen is not divide anymore :) , but igd is not
> using ( /dev/dri/card0 does not exist )

Can you provide guest dmesg?

FWIW, Intel seems to change their graphics hardware on every chip
revision.  This is all too common of a problem.  Unfortunately the
newest hardware I have access to is Broadwell.  Thanks,

Alex

> 2017-02-02 15:25 GMT+01:00 Manuel Ullmann <ullman.alias at posteo.de>:
> 
> > Oops. Forgot, that it was a qemu patch against non-released
> > qemu-2.9. Sometimes it is helpful to have a developer correcting the bad
> > memory segments of mailing list subscribers. ;) So that one might
> > actually also help. Is the Kabylake kernel fix irrelevant in this case?
> > Thanks,
> > Manuel  
> > > On Thu, Feb 2, 2017 at 5:54 AM, nicolas prochazka
> > > <prochazka.nicolas at gmail.com> wrote:
> > >
> > >     Hello,
> > >     We are using vfio igd passthrough :
> > >     Win10 | Linux ubuntu : broadwell IGD / skylake IGD ( intel nuc
> > >     plateforme )
> > >     without problem, igd is working well .
> > >
> > >
> > >     Now with the new intel nuc ( kabylake / nuc7i) ,
> > >     Neither windows nor linux recognize intel graphic card.
> > >     Under windows, drivers is on error, and screen is divide into 3
> > >     screens ,
> > >     as under Linux.
> > >
> > >
> > >
> > > Try this:
> > >
> > > https://lists.nongnu.org/archive/html/qemu-devel/2016-12/msg01600.html
> > >
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> >