CONFIG_VMSPLIT_2_25G is not available for thedefaultarchitecture x86.
Result is shown for architecture tile
default or selected kernelversion does not have config value CONFIG_VMSPLIT_2_25G.
Result is shown for kernelversion 6.7-rc3

2.25G/1.75G user/kernel split

configname: CONFIG_VMSPLIT_2_25G

Memory split
└─>2.25G/1.75G user/kernel split
In linux kernel since version 2.6.39 (release Date: 2011-05-18)