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diff --git a/mm/Kconfig b/mm/Kconfig
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+choice
+        prompt "Memory model"
+        default FLATMEM
+        default SPARSEMEM if ARCH_SPARSEMEM_DEFAULT
+        default DISCONTIGMEM if ARCH_DISCONTIGMEM_DEFAULT
+
+config FLATMEM
+        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.
+
+          If unsure, choose this option over any other.
+
+config DISCONTIGMEM
+        bool "Discontigious Memory"
+        depends on ARCH_DISCONTIGMEM_ENABLE
+        help
+          If unsure, choose "Flat Memory" over this option.
+
+endchoice
+