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-rw-r--r--mm/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index cd37993..fc644c5 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -89,3 +89,12 @@ config NEED_MULTIPLE_NODES
config HAVE_MEMORY_PRESENT
def_bool y
depends on ARCH_HAVE_MEMORY_PRESENT || SPARSEMEM
+
+#
+# Architectecture platforms which require a two level mem_section in SPARSEMEM
+# must select this option. This is usually for architecture platforms with
+# an extremely sparse physical address space.
+#
+config ARCH_SPARSEMEM_EXTREME
+ def_bool n
+ depends on SPARSEMEM && 64BIT