CONFIG_ETRAX_PA_CHANGEABLE_DIR is not available for thedefaultarchitecture x86.
Result is shown for architecture cris
default or selected kernelversion does not have config value CONFIG_ETRAX_PA_CHANGEABLE_DIR.
Result is shown for kernelversion 6.7-rc3

PA user changeable dir mask


Linux Kernel Configuration
└─>PA user changeable dir mask
In linux kernel since version 2.6.12  
This is a bitmask with information of what bits in PA that a user
can change direction on using ioctl's.
Bit set = changeable.
You probably want 00 here.