ARM: P2V: extend to 16-bit translation offsets

MSM's memory is aligned to 2MB, which is more than we can do with our
existing method as we're limited to the upper 8 bits.  Extend this by
using two instructions to 16 bits, automatically selected when MSM is
enabled.

Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4147f76e7988..b357c29e7dfc 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -195,7 +195,6 @@ config ARM_PATCH_PHYS_VIRT
         bool "Patch physical to virtual translations at runtime (EXPERIMENTAL)"
         depends on EXPERIMENTAL
         depends on !XIP_KERNEL && !THUMB2_KERNEL && MMU
-        depends on !ARCH_MSM
         depends on !ARCH_REALVIEW || !SPARSEMEM
         help
           Patch phys-to-virt translation functions at runtime according to
@@ -204,6 +203,10 @@ config ARM_PATCH_PHYS_VIRT
           This can only be used with non-XIP, non-Thumb2, MMU kernels where
           the base of physical memory is at a 16MB boundary.
 
+config ARM_PATCH_PHYS_VIRT_16BIT
+        def_bool y
+        depends on ARM_PATCH_PHYS_VIRT && ARCH_MSM
+
 source "init/Kconfig"
 
 source "kernel/Kconfig.freezer"