Re: [Xen-devel] [Qemu-devel] [RFC][PATCH 1/1] libxl: add one machine property to support IGD GFX passthrough

["Xu, Quan" <quan.xu@xxxxxxxxx>]

> -----Original Message-----
> From: Wei Liu [mailto:wei.liu2@xxxxxxxxxx]
> Sent: Saturday, January 31, 2015 10:33 PM
> To: Xu, Quan
> Cc: Wei Liu; Chen, Tiejun; ian.campbell@xxxxxxxxxx; mst@xxxxxxxxxx; Ian 
> Jackson;
> qemu-devel@xxxxxxxxxx; xen-devel@xxxxxxxxxxxxx; Gerd Hoffmann
> Subject: Re: [Xen-devel] [Qemu-devel] [RFC][PATCH 1/1] libxl: add one machine
> property to support IGD GFX passthrough
> 
> On Sat, Jan 31, 2015 at 07:07:16AM +0000, Xu, Quan wrote:
> >
> >
> > > -----Original Message-----
> > > From: xen-devel-bounces@xxxxxxxxxxxxx
> > > [mailto:xen-devel-bounces@xxxxxxxxxxxxx] On Behalf Of Wei Liu
> > > Sent: Friday, January 30, 2015 8:26 PM
> > > To: Chen, Tiejun
> > > Cc: Wei Liu; ian.campbell@xxxxxxxxxx; mst@xxxxxxxxxx; Ian Jackson;
> > > qemu-devel@xxxxxxxxxx; xen-devel@xxxxxxxxxxxxx; Gerd Hoffmann
> > > Subject: Re: [Xen-devel] [Qemu-devel] [RFC][PATCH 1/1] libxl: add
> > > one machine property to support IGD GFX passthrough
> > >
> > > On Fri, Jan 30, 2015 at 08:56:48AM +0800, Chen, Tiejun wrote:
> > > [...]
> > > > >>>
> > > > >>>Just remember to handle old option in libxl if your old option
> > > > >>>is already released by some older version of QEMUs.
> > > > >>
> > > > >>I just drop that old option, -gfx_passthru, if we're under qemu
> > > > >>upstream circumstance, like this,
> > > > >>
> > > > >
> > > > >The question is, is there any version of qemu upstream that has
> > > > >been released that has the old option (-gfx-passthru)?
> > > >
> > > > No. Just now we're starting to support IGD passthrough in qemu upstream.
> > > >
> > >
> > > Right, as of QEMU 2.2.0 there's no support of IGD passthrough in
> > > QMEU upstream.
> > >
> >
> > Just a question:
> >    Now what features do vt-d support? Thanks.
> >
> 
> I don't know whether vt-d is supported in qemu upstream.
> 
> But if there is support in upstream and you want to change some options, the
> same principle in my previous email still applies.
> 
> Wei.

Thanks.  -Quan

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