1 files changed, 6 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a750c1425c3a..1c5021002fe4 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1693,6 +1693,12 @@ config HIGHMEM
 config HIGHPTE
         bool "Allocate 2nd-level pagetables from highmem"
         depends on HIGHMEM
+        help
+          The VM uses one page of physical memory for each page table.
+          For systems with a lot of processes, this can use a lot of
+          precious low memory, eventually leading to low memory being
+          consumed by page tables.  Setting this option will allow
+          user-space 2nd level page tables to reside in high memory.
 
 config HW_PERF_EVENTS
         bool "Enable hardware performance counter support for perf events"