1 files changed, 6 insertions, 0 deletions

diff --git a/mm/Kconfig b/mm/Kconfig
index a9cb80ae6409..bd80460360db 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -137,5 +137,11 @@ config SPLIT_PTLOCK_CPUS
 # support for page migration
 #
 config MIGRATION
+        bool "Page migration"
         def_bool y if NUMA || SPARSEMEM || DISCONTIGMEM
         depends on SWAP
+        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.