default or selected kernelversion does not have config value CONFIG_HAVE_LIVEPATCH.
Result is shown for kernelversion 6.9-rc5
CONFIG_HAVE_LIVEPATCH (not configurable)
configname: CONFIG_HAVE_LIVEPATCH
Linux Kernel Configuration
└─>Processor type and features
└─>HAVE_LIVEPATCH
In linux kernel since version 4.2 (release Date: 2015-08-30)
Arch supports kernel live patching