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| H A D | prom_init.c | diff efec959f63de850fbd2442189f7dfc9c38efe251 Thu Feb 04 04:33:54 CET 2010 Benjamin Herrenschmidt <benh@kernel.crashing.org> powerpc/pseries: Pass more accurate number of supported cores to firmware
Updated variant of a patch by Joel Schopp.
The field containing the number of supported cores which we pass to
firmware via the ibm,client-architecture call was set by a previous
patch statically as high as is possible (NR_CPUS).
However, that value isn't quite right for a system that supports
multiple threads per core, thus permitting the firmware to assign
more cores to a Linux partition than it can really cope with.
This patch improves it by using the device-tree to determine the
number of threads supported by the processors in order to adjust
the value passed to firmware.
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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