If vpm_xvcpus is greater than or equal to zero, processor folding is enabled. Otherwise, if it is equal to -1, folding is disabled

Use below command to enable folding

labserver:/ # schedo -o vpm_xvcpus=0
Setting vpm_xvcpus to 0

Note: By default processor folding enabled in AIX

Important: Folding is available for both dedicated and shared mode partitions. On AIX 7.1,
folding is disabled for dedicated-mode partitions and enabled for shared-mode