The Kconfig file at the root of the kernel source tree is used to fill in the initial screen of the menuconfig UI. Take a look at it if you wish. It works by sourcing various other Kconfig files in different folders of the kernel source tree. The following table summarizes the more important Kconfig* files and which menu they serve in the kbuild UI:
| Menu | Kconfig file location for it |
| The main menu, the initial screen | Kconfig |
| General setup + Enable loadable module support | init/Kconfig |
| Processor types and features | arch/<arch>/Kconfig |
| Power management | kernel/power/Kconfig |
| Firmware drivers | drivers/firmware/Kconfig |
| Virtualization | arch/<arch>/kvm/Kconfig |
| General architecture-dependent options | arch/Kconfig |
| Enable the block layer | block/Kconfig |
| Executable... |
