Re: [Xen-devel] VGA passthough still not working

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Fri, Jan 20, 2012 at 05:49:20PM +0100, Sandi Romih wrote:
>    Pasi,
> 
>    I have that enabled in my BIOS, VT-d for the chipset and VT-x for the CPU.
>

Ok. And Xen enables IOMMU? Did you verify from Xen's dmesg ? 

http://wiki.xen.org/xenwiki/XenCommonProblems.html#head-2f76ed2d3c282003418d37fbbcda510cac266f89


 
>    Have you managed to pass your gpu through to the domU?
> 

No, I haven't tried that yet. I've been planning to, but I haven't had time for 
it yet.

There are many people who are using Xen VGA passthru with Intel, AMD/ATI and 
Nvidia graphics cards.
Currently it needs a lot of understanding and some custom patching, but you can 
make it work.

There are even businesses using Xen VGA passthru in production :)

-- Pasi

> 
>    Sandi
> 
>    On Jan 20, 2012 4:47 PM, "Pasi Kärkkäinen" <[1]pasik@xxxxxx> wrote:
> 
>      On Fri, Jan 20, 2012 at 02:05:43PM +0100, Sandi Romih wrote:
>      >    Hello,
>      >    I have spent a lot of time trying to get gfx passthru working on my
>      system
>      >    without success.
>      >    I looked onto my hardware capabilities again to make sure that it
>      does
>      >    support VT-d and I am not too sure that it does fully.
>      >    My hardware is as follows:
>      >    - Supermicro X8DTH-6F motherboard (5520 chipset which supports
>      VT-d)
>      >    - single Xeon X5650 CPU (which is listed as supporting VT-x, no
>      mention of
>      >    VT-d at [1][2]ark.intel.com)
>      >    Now, according to the [2]VTdHowTo, the motherboard BIOS, chipset
>      AND CPU
>      >    need to support VT-d.
>      >    What confuses me is, why is the 55x0 chipset listed there if none
>      of the
>      >    CPU's supported, that I know of, dont have the VT-d feature option,
>      only
>      >    VT-x.
>      >
> 
>      I've been using VT-d with Xen with Intel 5500 series chipset, and Xeon
>      5600 series CPU.
>      VT-d needs to be enabled in the BIOS.
> 
>      -- Pasi
> 
> References
> 
>    Visible links
>    1. mailto:pasik@xxxxxx
>    2. http://ark.intel.com/

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