Re: [Xen-users] VGA Passthrough

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Sun, Dec 26, 2010 at 01:45:06PM +0100, Rome Pierce wrote:
> Hello,
> 
> i think it has something to do with this:
> 
> (XEN) [VT-D]iommu.c:821: iommu_fault_status: Fault Overflow
> (XEN) [VT-D]iommu.c:824: iommu_fault_status: Primary Pending Fault
> (XEN) [VT-D]iommu.c:799: DMAR:[DMA Write] Request device [00:02.0] fault addr 
> ffffff000, iommu reg = ffff82c3fff56000
> (XEN) DMAR:[fault reason 05h] PTE Write access is not set
> (XEN) print_vtd_entries: iommu = ffff830137cf8950 bdf = 0:2.0 gmfn = ffffff
> (XEN)     root_entry = ffff830137c3b000
> (XEN)     root_entry[0] = 7737001
> (XEN)     context = ffff830007737000
> (XEN)     context[10] = 1_80fe001
> (XEN)     l3 = ffff8300080fe000
> (XEN)     l3_index = 3f
> (XEN)     l3[3f] = 0
> (XEN)     l3[3f] not present
> 
> 
> VT-d is supported and enabled in bios. Kernel Parameter are vtd=1 and 
> intel_iommu=on
> 

vtd=1 is an old option, and it's ignored by new Xen versions.
You should have iommu=verbose parameter set for *Xen* hypervisor (xen.gz).

But yeah, the above looks like the problem..

Did you modify Xen sources manually? Many VGA cards require manual 
tuning and won't work out-of-the-box ..

-- Pasi


> Merry X-max
> Romep
> 
> 
> -------- Original-Nachricht --------
> > Datum: Tue, 21 Dec 2010 10:55:26 +0100
> > Von: "Rome Pierce" <romep@xxxxxx>
> > An: "Pasi Kärkkäinen" <pasik@xxxxxx>, tknchris@xxxxxxxxx
> > CC: xen-users@xxxxxxxxxxxxxxxxxxx
> > Betreff: Re: [Xen-users] VGA Passthrough
> 
> > Well, i don't comment on these answers .. I solved it on my own now.
> > 
> > 
> > My Windows 7 Pro virtual machine installs but when Windows installs all
> > the updates (Intel HD graphics driver) i can't start the machine again. I 
> > got
> > a clarkdale cpu with integrated gpu and the Intel gpu's should work?
> > 
> > 
> > 
> > 
> > -------- Original-Nachricht --------
> > > Datum: Mon, 20 Dec 2010 22:24:21 +0200
> > > Von: "Pasi Kärkkäinen" <pasik@xxxxxx>
> > > An: chris <tknchris@xxxxxxxxx>
> > > CC: Rome Pierce <romep@xxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
> > > Betreff: Re: [Xen-users] VGA Passthrough
> > 
> > > On Mon, Dec 20, 2010 at 02:10:44PM -0500, chris wrote:
> > > > http://wiki.xensource.com/xenwiki/XenVGAPassthrough
> > > > 
> > > 
> > > And this one, also linked on the wiki page above:
> > > http://wiki.xensource.com/xenwiki/XenPCIpassthrough
> > > 
> > > -- Pasi
> > > 
> > > > On Mon, Dec 20, 2010 at 1:20 PM, Rome Pierce <romep@xxxxxx> wrote:
> > > > > Hello,
> > > > >
> > > > > i just installed Debian Squeeze and the Xen 4.0.1 debian packages. I
> > > want to passthrough vga to a Windows 7 virtual machine. But i always get
> > an
> > > error (Error: pci: PCI Backend and pci-stub don't own device
> > 0000:00:02.0).
> > > What am i doing wrong? My config file looks like this:
> > > > >
> > > > > name = 'win7'
> > > > > kernel = '/usr/lib/xen/boot/hvmloader'
> > > > > builder = 'hvm'
> > > > > device_model = '/usr/lib64/xen/bin/qemu-dm'
> > > > > memory = 1024
> > > > > acpi=1
> > > > > apic=1
> > > > >
> > > > > vif = [ 'bridge=eth0' ]
> > > > >
> > > > > disk = [ 'file:/path/to/win7.img,hda,w',
> > > 'file:/path/to/win7.iso,hdc:cdrom,r' ]
> > > > >
> > > > > boot='dc'
> > > > > usbdevice='tablet'
> > > > >
> > > > > vnc=1
> > > > > vnclisten = '0.0.0.0'
> > > > > vncpasswd=''
> > > > > sdl=0
> > > > >
> > > > > stdvga=0
> > > > > serial='pty'
> > > > >
> > > > > gfx_passthru=0
> > > > > pci=[ '00:02.0' ]
> > > > > --
> > > > > GMX DSL Doppel-Flat ab 19,99 Euro/mtl.! Jetzt auch mit
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> > > > >
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> > > > >
> > > > 
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