CONFIG_VIRT_TIMER is not available for thedefaultarchitecture x86.
Result is shown for architecture s390
default or selected kernelversion does not have config value CONFIG_VIRT_TIMER.
Result is shown for kernelversion 5.4.123

Virtual CPU timer support

modulename: vtime.ko

configname: CONFIG_VIRT_TIMER

Linux Kernel Configuration
└─>Base setup
└─>Virtual CPU timer support
In linux kernel since version 2.6.12  
This provides a kernel interface for virtual CPU timers.
Default is disabled.

source code: