CONFIG_ALIGNMENT_TRAP is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_ALIGNMENT_TRAP (not configurable)

modulename: alignment.ko


Linux Kernel Configuration
└─>Kernel Features
In linux kernel since version 2.6.12  
ARM processors cannot fetch/store information which is not
naturally aligned on the bus, i.e., a 4 byte fetch must start at an
address divisible by 4. On 32-bit ARM processors, these non-aligned
fetch/store instructions will be emulated in software if you say
here, which has a severe performance impact. This is necessary for
correct operation of some network protocols. With an IP-only
configuration it is safe to say N, otherwise say Y.

source code: