# support for page migration
#
config MIGRATION
- def_bool y if NUMA || SPARSEMEM || DISCONTIGMEM
- depends on SWAP
+ bool "Page migration"
+ def_bool y if NUMA
+ depends on SWAP && NUMA
+ help
+ Allows the migration of the physical location of pages of processes
+ while the virtual addresses are not changed. This is useful for
+ example on NUMA systems to put pages nearer to the processors accessing
+ the page.