CONFIG_CPU_SA1100 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_CPU_SA1100 (not configurable)

modulename: copypage-v4mc.ko

and/or

proc-sa1100.ko

configname: CONFIG_CPU_SA1100

Linux Kernel Configuration
└─>CPU_SA1100
In linux kernel since version 2.6.12  
source code:
arch/arm/mm/copypage-v4mc.c