Re: [Xen-devel] Intel HD Graphics 4600 Xen VGA Passthrough to Windows 7 Ultimate HVM domU

["Ren, Yongjie" <yongjie.ren@xxxxxxxxx>]

> -----Original Message-----
> From: Gordan Bobic [mailto:gordan@xxxxxxxxxx]
> Sent: Thursday, July 25, 2013 5:21 PM
> To: Pasi KÃrkkÃinen
> Cc: Ren, Yongjie; xen-users@xxxxxxxxxxxxx;
> singapore.mr.teo.en.ming@xxxxxxxxx; Zhang, Xiantao;
> xen-devel@xxxxxxxxxxxxx
> Subject: Re: [Xen-devel] Intel HD Graphics 4600 Xen VGA Passthrough to
> Windows 7 Ultimate HVM domU
> 
>  On Thu, 25 Jul 2013 12:07:25 +0300, Pasi KÃrkkÃinen <pasik@xxxxxx>
>  wrote:
> > On Thu, Jul 25, 2013 at 08:58:58AM +0000, Ren, Yongjie wrote:
> >> > > N.B. I didn't use the latest traditional qemu because of the
> >> following bug:
> >> > >
> >>
> http://bugzilla-archived.xenproject.org//bugzilla/show_bug.cgi?id=1865
> >> > >
> >> >
> >> > Hmm.. isn't that bug affecting qemu-traditional in general, not
> >> PCI/GPU
> >> > passthru specifically?
> >> > Or is it *only* PCI/GPU passthru that it breaks for you?
> >> >
> >> It's a general device assignment issue.
> >> Any PCI device can't be assigned to a HVM guest with the latest
> >> qemu-traditional.
> >>
> >
> > Ok. Is there already a separate thread on xen-devel about the
> > qemu-traditional PCI assignment issue?
> > If not, we should create one.
> 
>  FWIW, I'm using qemu-dm (i.e. traditional) in 4.3 and am successfully
>  passing USB, audio, GPU PCI devices using it (as long as I stay under
>  the 2GB domU RAM limit). So whatever the issue is it isn't generic.
> 
Hi Gordan,
Can you give me the commit of the traditional-qemu with which you can
successfully pass through USB/GPU to a guest ?
If your commit is before that culprit commit in that bugzilla, it should be
certainly successful for you to do device passthrough.

Best Regards,
     Yongjie (Jay)

>  That bug report doesn't include the domU config file, and IIRC
>  I saw a similar error when device_model/device_model_override and
>  device_model_version don't match or are unavailable in the build
>  (e.g. building without upstream and specifying traditional or
>  vice versa). More info needed to verify, I think.
> 
>  Gordan
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