CONFIG_PPC_HAVE_PREFIXED_SUPPORT is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc
CONFIG_PPC_HAVE_PREFIXED_SUPPORT (not configurable)
configname: CONFIG_PPC_HAVE_PREFIXED_SUPPORT
Linux Kernel Configuration
└─>Processor support
└─>PPC_HAVE_PREFIXED_SUPPORT