CONFIG_PPC_INDIRECT_IO is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc
default or selected kernelversion does not have config value CONFIG_PPC_INDIRECT_IO.
Result is shown for kernelversion 6.2.5

CONFIG_PPC_INDIRECT_IO (not configurable)

configname: CONFIG_PPC_INDIRECT_IO

Linux Kernel Configuration
└─>Platform support
└─>PPC_INDIRECT_IO
In linux kernel since version 2.6.20 (release Date: 2007-02-04)