Re: [Xen-devel] Video Presentation on PCI Express x16 VGA Pass Through to Xen-based Windows XP Home Edition HVM Virtual Machine

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

On 09/11/09 19:52, Mr. Teo En Ming (Zhang Enming) wrote:
> Hi,
>
> I have tried pvops dom 0 kernel 2.6.31 final from Jeremy's tree.
>
> But it gave me a USB host controller died error.
>
> Please refer to the error output here:
>
> http://teo-en-ming-aka-zhang-enming.blogspot.com/2009/09/error-with-pv-ops-dom-0-kernel-2631.html
>

Do you have CONFIG_SWIOTLB enabled?  I'm presuming you must because Xen
always configures it, but these crashes look like something is amiss
with it.

Also, try a new kernel - as of today - because I just fixed a pretty
serious bug.  However it should only affect reliability when doing guest
IO, not just normal bootup.  (It may have some bearing on your
performance regression.)

    J

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