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

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Sat, Mar 31, 2012 at 04:35:32PM +0200, Kristijan Le??nik wrote:
>    Hi,
>    does such patch exists?Ã
>    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?Ã
>

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 LeÃ*nik
> 
>    On Sat, Mar 31, 2012 at 1:19 PM, Pasi KÃârkkÃâinen <[1]pasik@xxxxxx>
>    wrote:
> 
>      On Sat, Mar 31, 2012 at 01:06:37PM +0200, Kristijan Le??nik wrote:
>      > Ã  Ã Hi,
>      > Ã  Ã i was looking hard to get this thing working, and i somehow
>      manage to get
>      > Ã  Ã two ATI graphic card working under Windows 7 and Debian 6 DomU,
>      > Ã  Ã what i learn from all this trying, that the most important thing
>      is the
>      > Ã  Ã motherboard!
>      > Ã  Ã i had i7 860 with VT-D, but it was hard to find working VT-D
>      motherboard,
>      > Ã  Ã i try gigabyte P55-USB3 with beta bios from gigabyte and i got
>      working 3D
>      > Ã  Ã drivers for a few minutes and then the DomU would crash,
>      > Ã  Ã then i wanted to try asus, but they said that P55 chipset doesnt
>      support
>      > Ã  Ã VT-D functions, then i look what David uses and get a MSI
>      motherboard and
>      > Ã  Ã its default bios has got VT-D to enable/disable
>      > Ã  Ã currenty i have:
>      > Ã  Ã i7 860
>      > Ã  Ã MSI P55 GD85
>      > Ã  Ã ATI H6670 - working 3D
>      > Ã  Ã ATI H5830 - working 3D
>      > Ã  Ã Debian 6.0, custom kernel 3.1
>      > Ã  Ã Xen 4.2 unstable ( from repo 2. march? )
>      > Ã  Ã Windows 7 64bit - virtual
>      > Ã  Ã no extra patches
>      > Ã  Ã but how i get it to work is strange, if i enable #gfx_passthru=1
>      then
>      > Ã  Ã 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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