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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.

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