1 files changed, 5 insertions, 1 deletions

diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
index c71b39a677aa..ef79ed25aecd 100644
--- a/arch/um/Kconfig.i386
+++ b/arch/um/Kconfig.i386
@@ -22,13 +22,17 @@ config TOP_ADDR
         default 0x80000000 if HOST_2G_2G
 
 config 3_LEVEL_PGTABLES
-        bool "Three-level pagetables"
+        bool "Three-level pagetables (EXPERIMENTAL)"
         default n
+        depends on EXPERIMENTAL
         help
         Three-level pagetables will let UML have more than 4G of physical
         memory.  All the memory that can't be mapped directly will be treated
         as high memory.
 
+        However, this it experimental on 32-bit architectures, so if unsure say
+        N (on x86-64 it's automatically enabled, instead, as it's safe there).
+
 config STUB_CODE
         hex
         default 0xbfffe000