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

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.


On Sat, Mar 31, 2012 at 11:11 AM, Pasi Kärkkäinen <pasik@xxxxxx> 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@xxxxxx>
>    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@xxxxxx

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