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>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a816a93..3f3faaa 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -197,15 +197,21 @@
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"