Re: PCI passthrough issue

[Jean Baptiste Favre <xen-devel@jbfavre.org>]

Strange,
Just noticed some message I missed before:
When starting domain:
[175004.836398] pciback 0000:04:00.0: device has been assigned to
another domain! Over-writting the ownership, but beware.

and
(XEN) traps.c:2302:d44 Domain attempted WRMSR 00000000c0010004 from
0000c827:4e390408 to 00000000:0000abcd.


The first one is very strange as I'm absolutely sure device is NOT
assigned to any domain (the only domU I have on this dom0 is my OpenWRT).
The second one... well, I don't know what it's talking about :-/

Regards,
JB


Le 12/01/2011 21:07, Jean Baptiste Favre a écrit :
> Le 12/01/2011 19:32, Konrad Rzeszutek Wilk a écrit :
>>>
>>> Finally, I think that my setup shall not be responsible for the fact
>>> that ping works, small DNS answers are received but not bigger ones
>>
>> Aah, somehow I missed that fact.
> 
> Seems yes :)
> 
>>> (limit seems to be around 100 bytes).
>>
>> What does wireshark or tcpdump tell you when you send the larger packets?
> 
> That's one of my problem: nothing special :(
> 
> I can only run tcpdump on my gateway (no SSH available on my OpenWRT
> domU and only xm console access is available).
> I see DNS requests comming in, I see DNS answers going out.
> ARP requests are fine.
> 
> As an example:
> dig free.fr works
> dig jbfavre.org works
> dig amazon.fr works
> dig amazon.com works (quite long, but works)
> dig google.fr fails
> dig google.com fails
> 
>>From another machine in the same LAN, all requests work fine.
> 
> Thought this was due to some ARP restriction setted up by default in
> OpenWRT, but in this case, I can not explain why some DNS lookup do work
> and some don't.
> 
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