diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-12 10:02:42 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-05-12 10:02:42 +0100 |
| commit | 111e9a5ce66e64cbf9cf33a60982f29fd7e224da (patch) | |
| tree | 386682015a1454dd61b27b8fb0965211f5214d0f /arch/arm/Kconfig | |
| parent | e8db89a242f46820b622be48d65951879575efd1 (diff) | |
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>
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 14 |
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" |