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+config SELECT_MEMORY_MODEL
+        def_bool y
+        depends on EXPERIMENTAL || ARCH_SELECT_MEMORY_MODEL
+
+choice
+        prompt "Memory model"
+        depends on SELECT_MEMORY_MODEL
+        default DISCONTIGMEM_MANUAL if ARCH_DISCONTIGMEM_DEFAULT
+        default SPARSEMEM_MANUAL if ARCH_SPARSEMEM_DEFAULT
+        default FLATMEM_MANUAL
+
+config FLATMEM_MANUAL
+        bool "Flat Memory"
+        depends on !ARCH_DISCONTIGMEM_ENABLE || ARCH_FLATMEM_ENABLE
+        help
+          This option allows you to change some of the ways that
+          Linux manages its memory internally.  Most users will
+          only have one option here: FLATMEM.  This is normal
+          and a correct option.
+
+          Some users of more advanced features like NUMA and
+          memory hotplug may have different options here.
+          DISCONTIGMEM is an more mature, better tested system,
+          but is incompatible with memory hotplug and may suffer
+          decreased performance over SPARSEMEM.  If unsure between
+          "Sparse Memory" and "Discontiguous Memory", choose
+          "Discontiguous Memory".
+
+          If unsure, choose this option (Flat Memory) over any other.
+
+config DISCONTIGMEM_MANUAL
+        bool "Discontigious Memory"
+        depends on ARCH_DISCONTIGMEM_ENABLE
+        help
+          This option provides enhanced support for discontiguous
+          memory systems, over FLATMEM.  These systems have holes
+          in their physical address spaces, and this option provides
+          more efficient handling of these holes.  However, the vast
+          majority of hardware has quite flat address spaces, and
+          can have degraded performance from extra overhead that
+          this option imposes.
+
+          Many NUMA configurations will have this as the only option.
+
+          If unsure, choose "Flat Memory" over this option.
+
+config SPARSEMEM_MANUAL
+        bool "Sparse Memory"
+        depends on ARCH_SPARSEMEM_ENABLE
+        help
+          This will be the only option for some systems, including
+          memory hotplug systems.  This is normal.
+
+          For many other systems, this will be an alternative to
+          "Discontigious Memory".  This option provides some potential
+          performance benefits, along with decreased code complexity,
+          but it is newer, and more experimental.
+
+          If unsure, choose "Discontiguous Memory" or "Flat Memory"
+          over this option.
+
+endchoice
+
+config DISCONTIGMEM
+        def_bool y
+        depends on (!SELECT_MEMORY_MODEL && ARCH_DISCONTIGMEM_ENABLE) || DISCONTIGMEM_MANUAL
+
+config SPARSEMEM
+        def_bool y
+        depends on SPARSEMEM_MANUAL
+
+config FLATMEM
+        def_bool y
+        depends on (!DISCONTIGMEM && !SPARSEMEM) || FLATMEM_MANUAL
+
+config FLAT_NODE_MEM_MAP
+        def_bool y
+        depends on !SPARSEMEM
+
+#
+# Both the NUMA code and DISCONTIGMEM use arrays of pg_data_t's
+# to represent different areas of memory.  This variable allows
+# those dependencies to exist individually.
+#
+config NEED_MULTIPLE_NODES
+        def_bool y
+        depends on DISCONTIGMEM || NUMA
+
+config HAVE_MEMORY_PRESENT
+        def_bool y
+        depends on ARCH_HAVE_MEMORY_PRESENT || SPARSEMEM