[PATCH] SPARSEMEM EXTREME

[firefly-linux-kernel-4.4.55.git] / mm / Kconfig

diff --git a/mm/Kconfig b/mm/Kconfig
index cd379936cac663eb1c4f1a730460ceda4216c477..fc644c5c065d2b5a2b05864b23b8e78385f6753b 100644 (file)
--- 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