CONFIG_RISCV_PROBE_UNALIGNED_ACCESS is not available for thedefaultarchitecture x86.
Result is shown for architecture riscv
default or selected kernelversion does not have config value CONFIG_RISCV_PROBE_UNALIGNED_ACCESS.
Result is shown for kernelversion 6.9-rc3

Probe for hardware unaligned access support

modulename: copy-unaligned.ko

configname: CONFIG_RISCV_PROBE_UNALIGNED_ACCESS

Unaligned Accesses Support
└─>Probe for hardware unaligned access support
During boot, the kernel will run a series of tests to determine the
speed of unaligned accesses. This probing will dynamically determine
the speed of unaligned accesses on the underlying system. If unaligned
memory accesses trap into the kernel as they are not supported by the
system, the kernel will emulate the unaligned accesses to preserve the
UABI.

source code: