CONFIG_KERNEL_IMAGE_BASE is not available for thedefaultarchitecture x86.
Result is shown for architecture s390

Kernel image base address

configname: CONFIG_KERNEL_IMAGE_BASE

Linux Kernel Configuration
└─>Processor type and features
└─>Kernel image base address
In linux kernel since version 4.19.318 (release Date: 2024-07-18)  
This is the address at which the kernel image is loaded in case
Kernel Address Space Layout Randomization (KASLR) is disabled.

In case the Protected virtualization guest support is enabled the
Ultravisor imposes a virtual address limit. If the value of this
option leads to the kernel image exceeding the Ultravisor limit,
this option is ignored and the image is loaded below the limit.

If the value of this option leads to the kernel image overlapping
the virtual memory where other data structures are located, this
option is ignored and the image is loaded above the structures.