CONFIG_PPC_XIVE is not available for thedefaultarchitecture x86.
Result is shown for architecture powerpc

CONFIG_PPC_XIVE (not configurable)

configname: CONFIG_PPC_XIVE

Linux Kernel Configuration
└─>PPC_XIVE
In linux kernel since version 4.2 (release Date: 2015-08-30)  
selects
CONFIG_PPC_SMP_MUXED_IPI
CONFIG_HARDIRQS_SW_RESEND
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is depended by
CONFIG_PPC_XIVE_NATIVE
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