Re: [Xen-devel] [Qemu-devel] [PATCH v4] igd-passthrough-i440FX: convert to realize()

["Michael S. Tsirkin" <mst@xxxxxxxxxx>]

OK - it's possible that this patch
        commit 349a3b1cc9023f67f8fa336cb3c4a8f21a4aaaf3
        Author: Cao jin <caoj.fnst@xxxxxxxxxxxxxx>
        Date:   Sat Jan 2 16:02:20 2016 +0800

            igd-passthrough: fix use of host_pci_config_read

is required for older guests.
This patch just went it - could you test latest master please?

On Tue, Jan 12, 2016 at 08:41:13AM +0000, Hao, Xudong wrote:
> Yes, Linux VM update to a 3.18 kernel.
> The RHEL7.2 default kernel (should be 3.10) VM don't boot up with IGD 
> pass-through, and Windows can't boot up either.
> 
> Thanks,
> -Xudong
> 
> 
> > -----Original Message-----
> > From: Gerd Hoffmann [mailto:kraxel@xxxxxxxxxx]
> > Sent: Monday, January 11, 2016 6:32 PM
> > To: Hao, Xudong <xudong.hao@xxxxxxxxx>
> > Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>; Lars Kurth
> > <lars.kurth@xxxxxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxx; Michael S. Tsirkin
> > <mst@xxxxxxxxxx>; Lars Kurth <lars.kurth.xen@xxxxxxxxx>; qemu-
> > devel@xxxxxxxxxx; Cao jin <caoj.fnst@xxxxxxxxxxxxxx>; Stefano Stabellini
> > <Stefano.Stabellini@xxxxxxxxxx>
> > Subject: Re: [Qemu-devel] [Xen-devel] [PATCH v4] igd-passthrough-i440FX:
> > convert to realize()
> > 
> >   Hi,
> > 
> > > I can boot up Linux VM with IGD pass-through with latest qemu (without
> > > any additional patch), guest run 3D "nexuiz" and get 180fps.
> > 
> > That is a pretty recent linux guest I assume?
> > Tried older kernels too, possibly even the old userspace xorg driver?
> > Do windows guest work as well?
> > 
> > cheers,
> >   Gerd
> 

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