[Xen-users] Problem with delegated hardware (Realtek Network driver 8139too)

[Luciano Coutinho Barcellos <luciano@xxxxxxxxxxxxxxxxx>]

Dear friends,

  I've googled a lot before giving up and come here to ask for some 
help. All I've found about my problem was a pretty old single message 
with no reply since it was post on Jul 19th, 2007.
  I hope to have better luck and find some light to solve the problem. 
I want to configure a domU, with 3 nics (identified as having the 
Realtek 8139D chip) delegated to it. Everything works almost great 
except for the message shown when I try to ifconfig any card:
       SIOCSIFFLAGS: Cannot allocate memory.

  Considering the following:

      - The cards work fine on dom0;
      - Delegating a card with chipset Via works on domU;
      - Everything is fine with passthrough, card detection and module 
loading in domU.
   What could be the problem?
   I've read something about an old b44 driver which suffered from a 
limitation about memory allocation. It needed memory from the first 
physical 16MB. Could it be a similar problem?
   My configuration is the folowing:

      - dom0 kernel command line includes:  
pciback.hide=(00:08.0)(00:09.0)(00:0a.0)
      - domU configuration file has: pci = [ '00:08.0', '00:09.0', 
'00:0a.0' ]
      - xen hypervisor: 3.2.1-i386 from Debian Lenny repositories
      - linux kernel for both dom0 and domU: 2.6.26-2-xen-686 from 
Debian Lenny repositories
      - kernel module used for the nics: 8139too

   Hope to get some help.

   Thank you very much.
   Luciano.

luciano.vcf
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