default or selected kernelversion does not have config value CONFIG_ARCH_PHYS_ADDR_T_64BIT.
Result is shown for kernelversion 6.7-rc3

CONFIG_ARCH_PHYS_ADDR_T_64BIT (not configurable)

configname: CONFIG_ARCH_PHYS_ADDR_T_64BIT

Linux Kernel Configuration
└─>Processor type and features
└─>ARCH_PHYS_ADDR_T_64BIT
In linux kernel since version 2.6.28 (release Date: 2008-12-24)