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Re: [Xen-devel] Re: Xen 3.4 multi-function pass-through tree, isn't wor

To: Simon Horman <horms@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: Xen 3.4 multi-function pass-through tree, isn't working...
From: Tom Rotenberg <tom.rotenberg@xxxxxxxxx>
Date: Mon, 27 Jul 2009 11:03:19 +0300
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Thanks for investing the time to solve the bugs i'm reporting.

I must say, that the second problem i reported (the complete machine
freeze), is much important in my opinion, so i also hope, that someone
from the community, will give it a look, it's certainly blocking me,
and i don't know from where to start on this issue. Anyway, i'm
waiting for your inputs about the second problem.


On Mon, Jul 27, 2009 at 4:58 AM, Simon Horman<horms@xxxxxxxxxxxx> wrote:
> On Sun, Jul 26, 2009 at 01:01:02PM +0300, Tom Rotenberg wrote:
>> Simon,
>> (BTW - Did you see my other mail, about a problem, which causes the
>> machine to freeze? i suspect that this might be due to the multi-fn
>> pass-through code. Can u please give your opinion about it?)
> Its quite likely that the problem that you are seeing is caused by
> multi-function.  Especially as a) you are probably the only person to
> exercise the code in this way so far and b) the PCI pass-through code is
> in my opinion very fragile.
> I haven't looked closely into the problem yet - I was kind of hoping
> someone else would while I was tracking down the cause of the
> other problems that you have reported.
>> Here is the resulting log:
> [snip]
>> [2009-07-26 05:59:12 4286] INFO (XendDomainInfo:2146) Created PCI device 
>> 0000:00:1a.0 at index 0 with state None
>> [2009-07-26 05:59:12 4286] INFO (XendDomainInfo:2146) Created PCI device 
>> 0000:00:1d.0 at index 1 with state None
> Thanks, that is very interesting. It looks like 0000:00:1a.0 is
> being inserted into xenstore twice, which is invalid. I'll hunt
> further to see if I can work out why that is occurring.

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