powerpc: Linux cannot run with 0 cores

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If we configure with CONFIG_SMP=n or set NR_CPUS less than the number of
SMT threads we will set the max cores property to 0 in the
ibm,client-architecture-support structure. On new versions of firmware that
understand this property it obliges and terminates our partition.

Use DIV_ROUND_UP so we handle not only the CONFIG_SMP=n case but also the
case where NR_CPUS isn't a multiple of the number of SMT threads.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Anton Blanchard 2010-06-17 14:33:06 +00:00 • committed by Benjamin Herrenschmidt

parent 3880ecb05b

commit 33ad5e4b6c

1 changed files with 1 additions and 1 deletions

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arch/powerpc/kernel/prom_init.c

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