tree 3dbaea84599808a2bea0fb24439dcfe350a56ef7
parent bc0df9ec4c014dac85c0358f56be4223bf0f3334
author Nishanth Aravamudan <nacc@us.ibm.com> 1285932378 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1286947162 +1100

powerpc/pseries/xics: Use cpu_possible_mask rather than cpu_all_mask

Current firmware only allows us to send IRQs to the first processor or
all processors. We currently check to see if the passed in mask is equal
to the all_mask, but the firmware is only considering whether the
request is for the equivalent of the possible_mask. Thus, we think the
request is for some subset of CPUs and only assign IRQs to the first CPU
(on systems without irqbalance running) as evidenced by
/proc/interrupts. By using possible_mask instead, we account for this
and proper interleaving of interrupts occurs.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>