CONFIG_AP is not available for thedefaultarchitecture x86.
Result is shown for architecture s390
default or selected kernelversion does not have config value CONFIG_AP.
Result is shown for kernelversion 6.9.8

Support for Adjunct Processors (ap)

modulename: ap.ko

configname: CONFIG_AP

Linux Kernel Configuration
└─>I/O subsystem
└─>Support for Adjunct Processors (ap)
In linux kernel since version 4.19.318 (release Date: 2024-07-18)  
This driver allows usage to Adjunct Processor (AP) devices via
the ap bus, cards and queues. Supported Adjunct Processors are
the CryptoExpress Cards (CEX).

To compile this driver as a module, choose M here: the
module will be called ap.

If unsure, say Y (default).

source code: