Re: [Xen-users] [REQUEST] Request for Xen Users to Attempt Jean David Techer's Xen 4.2-unstable VGA Passthrough Documentation

[Casey DeLorme <cdelorme@gmail.com>]

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Hi Pasi,

I can confirm that their GPU Passthrough works with consumer models, they
visited my college and presented a 30 minute demonstration video where they
acknowledged this.

Wei stated that XenClient ahs a "customized ATI component", and I am quite
certain he is aware our discussion is about consumer models.


XenClient comes with XenDesktop, they market to the on-the-go businessman
so it was designed with laptops in mind, but I am quite sure it would run
on a tower.

~Casey

On Sat, Mar 31, 2012 at 11:11 AM, Pasi Kärkkäinen <pasik@iki.fi> wrote:

> On Sat, Mar 31, 2012 at 04:35:32PM +0200, Kristijan Le??nik wrote:
> >    Hi,
> >    does such patch exists?Â
> >    i am working on this for quite some time now, and didn't came across
> any
> >    ATI patch, only for nvidia
> >
>
> Yes it's available on the xen-devel mailinglist archives,
> and iirc also on the xen vga passthru wiki page.
>
> I think the link/url was already posted to this thread once.
>
>
> >    as i understand that ATI should work out of the box or am i
> mistaking?Â
> >
>
> Some ATI cards work as *secondary* without extra patches,
> but passing them as *primary* requires a patch to make the
> ATI specific VBIOS stuff work properly.
>
> -- Pasi
>
> >    Best Regards,
> >    Kristijan LeÄ*nik
> >
> >    On Sat, Mar 31, 2012 at 1:19 PM, Pasi KÀrkkÀinen <[1]pasik@iki.fi>
> >    wrote:
> >
> >      On Sat, Mar 31, 2012 at 01:06:37PM +0200, Kristijan Le??nik wrote:
> >      > Â  Â Hi,
> >      > Â  Â i was looking hard to get this thing working, and i somehow
> >      manage to get
> >      > Â  Â two ATI graphic card working under Windows 7 and Debian 6
> DomU,
> >      > Â  Â what i learn from all this trying, that the most important
> thing
> >      is the
> >      > Â  Â motherboard!
> >      > Â  Â i had i7 860 with VT-D, but it was hard to find working VT-D
> >      motherboard,
> >      > Â  Â i try gigabyte P55-USB3 with beta bios from gigabyte and i
> got
> >      working 3D
> >      > Â  Â drivers for a few minutes and then the DomU would crash,
> >      > Â  Â then i wanted to try asus, but they said that P55 chipset
> doesnt
> >      support
> >      > Â  Â VT-D functions, then i look what David uses and get a MSI
> >      motherboard and
> >      > Â  Â its default bios has got VT-D to enable/disable
> >      > Â  Â currenty i have:
> >      > Â  Â i7 860
> >      > Â  Â MSI P55 GD85
> >      > Â  Â ATI H6670 - working 3D
> >      > Â  Â ATI H5830 - working 3D
> >      > Â  Â Debian 6.0, custom kernel 3.1
> >      > Â  Â Xen 4.2 unstable ( from repo 2. march? )
> >      > Â  Â Windows 7 64bit - virtual
> >      > Â  Â no extra patches
> >      > Â  Â but how i get it to work is strange, if i enable
> #gfx_passthru=1
> >      then
> >      > Â  Â virtual machine wont start
> >      >
> >
> >      gfx_passthru=1 makes the passthru gfx card primary in the VM,
> >      so you need the additional ATI gfx passthru patch so that the VBIOS
> >      passthru works.
> >
> >      without gfx_passthru=1 the virtual emulated gfx is primary.
> >      -- Pasi
> >
> > References
> >
> >    Visible links
> >    1. mailto:pasik@iki.fi
>

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