CONFIG_PPC_XIVE is not available for the selected architecture 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

is depended by
CONFIG_PPC_XIVE_NATIVE