CONFIG_PPC_BOOK3E is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc
default or selected kernelversion does not have config value CONFIG_PPC_BOOK3E.
Result is shown for kernelversion 6.9.9

CONFIG_PPC_BOOK3E (not configurable)

configname: CONFIG_PPC_BOOK3E

Linux Kernel Configuration
└─>Processor support
└─>PPC_BOOK3E
In linux kernel since version 2.6.32 (release Date: 2009-12-02)