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Re: [Xen-devel] Possible bug with pass-through hot-plug?

  • To: Simon Horman <horms@xxxxxxxxxxxx>
  • From: Tom Rotenberg <tom.rotenberg@xxxxxxxxx>
  • Date: Fri, 9 Oct 2009 16:29:38 +0200
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 09 Oct 2009 07:30:04 -0700
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So, first try to reproduce my problem with a Windows VM, and if it
dosn't reproduce - instruct me on which tests to do to check your

On Fri, Oct 9, 2009 at 2:09 PM, Simon Horman <horms@xxxxxxxxxxxx> wrote:
> On Fri, Oct 09, 2009 at 01:49:49PM +0200, Tom Rotenberg wrote:
>> OK, great.
>> I will be very surprised if it will work for u on a Windows VM...
>> BTW - do u use the (small) patch i wrote for "forcing" the device to
>> be on the 00:1b.0 slot?
> I haven't needed your patch when testing with Linux guests.
> The thing is, during my testing I have observed that devfn
> is set correctly without your patch. I was able to observe this
> using the debugging patch that I posted. I am suspecting that during
> your testing devfn is being set to an incorrect value - which your
> patch forcibly corrects. I strongly suspect that is due to some
> behaviour in xm or xend that isn't related to which OS the
> guest is running.

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