Possible bug in kernel 2.6.37
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Hello,
I'm not sure this is neither the right place, nor the right way to
introduce my problem, but I've only small kernel knowledge. Please
excuse me if I'm wrong.
I'm using 2 Debian Squeeze Xen Dom0 servers. Those 2 servers provide PCI
passthrough for a network card.
The idea is to filter network trafic inside dedicated domU instead of
having dom0 directly connected on the network.
For my tests, I choose Debian Squeeze with 2.6.37 kernel from
experimental. Here are the results:
- - Debian Squeeze 32bits + 32bits 2.6.37 kernel: incoming packets larger
than 128 bytes are blocked "somewhere".
- - Debian Squeeze 32bits + 64bits 2.6.37 kernel: everything works fine.
- - Debian Squeeze 64bits + 64bits 2.6.37 kernel: everything works fine.
My first thought was I discovered a bug in Xen PCI passthrough code.
I exchange some mails on xen-devel mailing list about it, mostly with
Konrad Rzeszutek Wilk.
He asked me to do many tests which did not help to diagnose the problem.
Then he suggest me to change memory allocated to domU from 256mb to 512mb.
That solved my problem.
Now, I don't know exactly what I shall do.
Any help will be appreciated,
Regards,
Jean Baptiste Favre
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