1 files changed, 7 insertions, 8 deletions

diff --git a/mm/Kconfig b/mm/Kconfig
index c070ec0c15bf..9ef97417a0b9 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -112,18 +112,17 @@ config SPARSEMEM_EXTREME
         def_bool y
         depends on SPARSEMEM && !SPARSEMEM_STATIC
 
-#
-# SPARSEMEM_VMEMMAP uses a virtually mapped mem_map to optimise pfn_to_page
-# and page_to_pfn.  The most efficient option where kernel virtual space is
-# not under pressure.
-#
 config SPARSEMEM_VMEMMAP_ENABLE
         def_bool n
 
 config SPARSEMEM_VMEMMAP
-        bool
-        depends on SPARSEMEM
-        default y if (SPARSEMEM_VMEMMAP_ENABLE)
+        bool "Sparse Memory virtual memmap"
+        depends on SPARSEMEM && SPARSEMEM_VMEMMAP_ENABLE
+        default y
+        help
+         SPARSEMEM_VMEMMAP uses a virtually mapped memmap to optimise
+         pfn_to_page and page_to_pfn operations.  This is the most
+         efficient option when sufficient kernel resources are available.
 
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG