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Re: [Xen-users] AMD cards - VGA passthrough no more possible with newer Xen / kernel releases

  • To: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
  • From: "H. Sieger" <powerhouse.linux@xxxxxxxxx>
  • Date: Wed, 9 Apr 2014 23:44:33 -0700 (PDT)
  • Cc: "xen-users@xxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxx>
  • Delivery-date: Thu, 10 Apr 2014 06:45:57 +0000
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  • List-id: Xen user discussion <xen-users.lists.xen.org>

Thanks for the contact details and suggestions. Before turning to xen-devel, I will give Xen 4.4 a spin and see how that works. I believe the new Ubuntu 14.04 comes with Xen 4.4 in which case I won't even have to build it.

One more thing: All my testing was done on Linux Mint / Ubuntu and I can't really tell if this is a Ubuntu specific issue. If others have used the AMD 7770 or AMD 6450 cards for VGA passthrough and had more success with Xen 4.2 or Xen 4.3, I would be interested to hear.

On Wednesday, April 9, 2014 2:08 PM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
On Wed, 2014-04-09 at 03:40 -0700, H. Sieger wrote:
> I'd be glad to be brought in touch with the AMD people to get this
> resolved, and I'm willing to help out where I can (time permitted).

I think your best bet is to start a thread on xen-devel about the issues
you are having and take it from there. Kelly.Zytaruk@xxxxxxx is the one
working on this so probably CC him too.

It would probably be best to try at least Xen 4.4 if not the development
branch since things will need to be fixed there and then considered for

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