default or selected kernelversion does not have config value CONFIG_KVM_CLOCK.
Result is shown for kernelversion 6.2.5

KVM paravirtualized clock

modulename: kvmclock.ko

configname: CONFIG_KVM_CLOCK

Linux Kernel Configuration
└─>Processor type and features
└─>Paravirtualized guest support
└─>KVM paravirtualized clock
In linux kernel since version 2.6.26 (release Date: 2008-07-13)  
Turning on this option will allow you to run a paravirtualized clock
when running over the KVM hypervisor. Instead of relying on a PIT
(or probably other) emulation by the underlying device model, the host
provides the guest with timing infrastructure such as time of day, and
system time

source code: