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

["Hao, Xudong" <xudong.hao@xxxxxxxxx>]

With latest qemu 7b8a354d4716, RHEL7.2 (with default kernel) VM still can't 
boot up with IGD.

Thanks,
-Xudong


> -----Original Message-----
> From: Michael S. Tsirkin [mailto:mst@xxxxxxxxxx]
> Sent: Tuesday, January 12, 2016 4:48 PM
> To: Hao, Xudong <xudong.hao@xxxxxxxxx>
> Cc: Gerd Hoffmann <kraxel@xxxxxxxxxx>; Stefano Stabellini
> <stefano.stabellini@xxxxxxxxxxxxx>; Lars Kurth <lars.kurth@xxxxxxxxxx>; xen-
> devel@xxxxxxxxxxxxxxxxxxx; 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()
> 
> 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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