Xen devel - Oct 2007 - Problem with Xen-SmartIO IB setup for multiple VMs

Hi,

I tweaked the xen-smartio (http://wiki.xensource.com/xenwiki/XenSmartIO)
code to enable support for setting up IB in multiple VMs. I can load the
ib_gmthca module in two VMs but not more than that! It is kind of strange
why this would be observed as in general if the code works for two, it
should work for 3 or more as well subject to the limit specified in the
program.

Is there anything inherent in the way the socket communication is used to
setup communication between dom0 and domu that prevents more than 2 VMs from
using IB simultaneously on the same physical machine (I''ve set the
number of
threads and devices to 16)? I can''t get any debug traces as well after
the
second VM''s IB module has been setup. The dom0 module just seems to
freeze
and be non-responsive thereafter.

Any help would be appreciated.

Thanks,

Mukil


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