--- arch/arm/Kconfig

+++ arch/arm/Kconfig

@@ -1780,6 +1780,16 @@ config ALIGNMENT_TRAP

correct operation of some network protocols. With an IP-only

configuration it is safe to say N, otherwise say Y.

+config ALLOW_CPU_ALIGNMENT

+ bool "Allow CPU-based alignment handling"

+ default y if ARCH_MSM_SCORPION || ARCH_MSM_SCORPIONMP

+ help

+ Advanced ARM processors, such as the Cortex series and ARMv7-based

+ CPUS are capable of performing unaligned accesses for many types of

+ memory accesses. Typically, using a cpu-based alignment fixup is

+ faster than doing such a fixup in software. For best performance

+ on advanced CPUs, say Y here.

+

config UACCESS_WITH_MEMCPY

bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"

depends on MMU && EXPERIMENTAL