CONFIG_ARCH_NO_VIRT_TO_BUS is not available for thedefaultarchitecture x86.
Result is shown for architecture sh

CONFIG_ARCH_NO_VIRT_TO_BUS (not configurable)

configname: CONFIG_ARCH_NO_VIRT_TO_BUS

Linux Kernel Configuration
└─>ARCH_NO_VIRT_TO_BUS
In linux kernel since version 2.6.23 (release Date: 2007-10-09)