Re: [Xen-devel] Re : Re : Re : Re : Re : Re : Re : Re: Patches for VGA-Passthrough XEN 4.2 unstable

[Tobias Geiger <tobias.geiger@xxxxxxxxx>]

Hi James 

You can either remove the "pci =  [ '01:00.0' ]" (btw what are the * in your 
config?!) until you are ready to install the Driver for the passed through 
card, or you can fiddle around with gfx_passthru=1/0 , 0 meaning the pci-card 
will be there as a secondary card within domU, 1 meaning the cirrus gets 
disabled and the pci-card passed through will be the only card within domu. 

Personaly i prefer the first one.

Greetings
Tobias

P.S.: This usage question would better suit to xen-users, but...

Am Donnerstag, 16. Februar 2012, 14:38:57 schrieb Jamesffs:
> Hello, I'm trying vga-passthrough with an nVIDIA card.
> I am at the end of the way, I have applied the patches without problems. I
> have configured my winxp DomU as follow:
> 
> kernel = '/usr/lib/xen/boot/hvmloader'
> builder = 'hvm'
> memory = '512'
> device_model='/usr/lib/xen/bin/qemu-dm'
> 
> #Number of CPUâs
> vcpus = 1
> 
> # Disks
> disk = [ 'file:/xen/domains/win01/disk.img,ioemu:hda,w',
> 'file:/home/WindowsXP-SP2/image.iso,ioemu:hdc:cdrom,r' ]
> 
> # Hostname
> name = 'win01'
> 
> # Networking
> vif = ['type=ioemu, bridge=xenbr0']
> 
> #Passthrough
> *gfx_passthru=1
> pci  = [ '01:00.0' ]*
> 
> boot='cd'
> *vnc=1
> vncviewer=1*
> acpi = 1
> sdl=0
> serial='pty'
> on_poweroff = 'destroy'
> on_reboot = 'restart'
> on_crash = 'restart'
> 
> I have read that it is not possible to use VNC if I passed-through-VGA
> Card, as Tobias says here:
> 
> 
> 
> Tobias Geiger wrote
> 
> > Hi Sythrar,
> > 
> > you can't see the output of the passed-through-VGA Card in VNC. At least
> > not
> > in the qemu-vnc server; The output to that emulated (Cirrus?) Card stops
> > as
> > soon as  the Driver for the passed-through-VGA Card is loaded within the
> > DomU.
> > From that moment on the you can only see the output on a Monitor attached
> > to
> > the passed-through-VGA Card. VNC is of course possible with the DomU
> > facilities, i.e. install a VNC Server within DomU and attach a vncviewer
> > to it
> > - but its not really practical regarding 3D- or Movie Output (at least
> > not without optimizations to the VNC Server/Client)
> > 
> > Greetings
> > Tobias
> 
> So I have two probems,
> I don't know how to attach a Monitor to the passed-through-VGA Card,
> how can I do this in the cfg file?
> Should I use another option to disable the cirrus emulated card in the cfg
> file?
> 
> Could anyone with an nVIDIA card passed-throughed post his config file
> here? Thanks you very much to everyone in advance
> 
> James.
> 
> 
> --
> View this message in context:
> http://xen.1045712.n5.nabble.com/Patches-for-VGA-Passthrough-XEN-4-2-unsta
> ble-tp4406265p5489530.html Sent from the Xen - Dev mailing list archive at
> Nabble.com.
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel


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