PVO_WHERE
PVO_WHERE(victim_pvo, SPILL_UNSET);
PVO_WHERE(source_pvo, SPILL_SET);
PVO_WHERE(pvo, ENTER_INSERT);
PVO_WHERE(pvo, REMOVE);
PVO_WHERE(pvo, PMAP_PROTECT);
PVO_WHERE(pvo, PMAP_PAGE_PROTECT);
PVO_WHERE(pvo, SPILL_INSERT);