Re: [Xen-users] VGA/PCI Passthrough of Secondary Graphics Adapter

[Gordan Bobic <gordan@xxxxxxxxxx>]

Does the FirePro exhibit the same issue? Or does it "just work"?


On Wed, 1 May 2013 10:10:05 +0200, Andreas Falck 
<falck.andreas.lists@xxxxxxxxx> wrote:
> Ok, I just started testing a radeon 7790 with my setup, and it seems 
> I
> get reset issues after reboot now with xm. No BSOD but the card shows
> up as unusable (yellow exlamation mark) after reboot of domU. I'll
> update as testing progresses.
>
> Regards,
> Andreas
>
> 2013/5/1 Gordan Bobic
>
> On 05/01/2013 08:42 AM, Andreas Falck wrote:
>   Â>If only ATI provided a method to contact them for such support,
>  considering they claim that they "tested" 4850/4870 cards to work
> with
>  Xen and VGA >passthrough. If they've tested it, it'd be nice if they
>  documented it. Personally I've not seen any evidence of the sort of
>  stability you'd rightfully expect when >the manufacturer vouches 
> that
>  something works.
>
>  Which toolstack are you using? I have had better success with xm 
> than
>  with xl for passing through a 6850 to a windows 7 domU. Namely, I
>  experienced the performance degradation on reboot of domU with xl,
> but
>  not with xm.
>
>  I am using the xm stack.
>
>   Though I could solve it also under xl by the eject trick
>  after reboot of domU - but if this is a general reset related issue
> it
>  might be different symptoms for different radeon models. This was in
> xen
>  4.1.x under gentoo and ubuntu (haven't tested xen 4.2+). Relying on 
> a
>  deprecated toolstack is not future-proof of course, but it has 
> worked
>  for me so far, and ubuntu 12.10 still uses xen 4.1 which provides xm
> as
>  the default.
>
>  It might be that AMD got their tested cards working with xen 4.1 and
> xm,
>  and never tried any more after that.
>
>  I'm taking the claims of AMD having "tested" things with a bucket of
> salt until I see the detailed documentation of the process they used
> (exact Xen version, dom0 OS stack, domU version and patch level, and
> the exact tests carried out in domU). Thus far I have seen no such
> documentation, which makes the claims that it was tested pure 
> hearsay.
>  Gordan
>
>  _______________________________________________
>  Xen-users mailing list
>  Xen-users@xxxxxxxxxxxxx [2]
>  http://lists.xen.org/xen-users [3]
>
>
>
> Links:
> ------
> [1] mailto:gordan@xxxxxxxxxx
> [2] mailto:Xen-users@xxxxxxxxxxxxx
> [3] http://lists.xen.org/xen-users

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxx
http://lists.xen.org/xen-users