CONFIG_HAVE_ARCH_SOFT_DIRTY (not configurable)

configname: CONFIG_HAVE_ARCH_SOFT_DIRTY

Linux Kernel Configuration
└─>General architecture-dependent options
└─>HAVE_ARCH_SOFT_DIRTY
In linux kernel since version 3.10 (release Date: 2013-06-30)  
is selected by
CONFIG_MEM_SOFT_DIRTY