[IA64] save and restore cpus_allowed in cpu_idle_wait
Save and Restore the task's cpus_allowed mask, across the set_cpus_allowed() in cpu_idle_wait(). Without this, we will endup corrupting task's cpu affinity. Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: NTony Luck <tony.luck@intel.com>
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