ARM: phys-to-virt: improve Kconfig help texts

Improve the Kconfig help texts for the phys-to-virt patching feature.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 10 insertions, 4 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a816a93e1993..3f3faaa55d81 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -197,15 +197,21 @@ config ARM_PATCH_PHYS_VIRT
         depends on !XIP_KERNEL && MMU
         depends on !ARCH_REALVIEW || !SPARSEMEM
         help
-          Patch phys-to-virt translation functions at runtime according to
-          the position of the kernel in system memory.
+          Patch phys-to-virt and virt-to-phys translation functions at
+          boot and module load time according to the position of the
+          kernel in system memory.
 
-          This can only be used with non-XIP with MMU kernels where
-          the base of physical memory is at a 16MB boundary.
+          This can only be used with non-XIP MMU kernels where the base
+          of physical memory is at a 16MB boundary, or theoretically 64K
+          for the MSM machine class.
 
 config ARM_PATCH_PHYS_VIRT_16BIT
         def_bool y
         depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM
+        help
+          This option extends the physical to virtual translation patching
+          to allow physical memory down to a theoretical minimum of 64K
+          boundaries.
 
 source "init/Kconfig"