kernelconfig_penguin
CONFIG_64BIT_PHYS_ADDR is not available for the default architecture x86.
Result is shown for architecture mips
default or selected kernelversion does not have config value CONFIG_64BIT_PHYS_ADDR.
Result is shown for kernelversion 5.9.9

CONFIG_64BIT_PHYS_ADDR (not configurable)

configname: CONFIG_64BIT_PHYS_ADDR

Linux Kernel Configuration
└─> Kernel type
└─> 64BIT_PHYS_ADDR