Xen devel - Jan 2010 - [PATCH] xend: NUMA: fix division by zero on unpopulated nodes

Hi,

nodes without memory will currently be disabled by also moving the 
physical cores connected to them to other nodes. This leads to nodes 
without CPUs and thus to a division by zero in the node allocation 
algorithm.
Attached patch fixes this by checking for 0 before the division. This 
fixes domain creation on boxes with memory-less nodes.
The resulting domain distribution is still not correct, I will send 
another patch after more testing.

Regards,
Andre.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>

-- 
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 488-3567-12
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Advanced Micro Devices GmbH
Karl-Hammerschmidt-Str. 34, 85609 Dornach b. Muenchen
Geschaeftsfuehrer: Andrew Bowd; Thomas M. McCoy; Giuliano Meroni
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