Create a tool that changes kconfig options according to the recommendations about kernel-hardening-checker

[a13xp0p0v]

This feature is implemented as a part of the kconfig-hardened-check tool.

With the -g argument, the tool generates a Kconfig fragment with the security hardening options for the selected microarchitecture.

This Kconfig fragment can be merged with the existing Linux kernel config:

$ ./bin/kconfig-hardened-check -g X86_64 > /tmp/fragment
$ cd ~/linux-src/
$ ./scripts/kconfig/merge_config.sh .config /tmp/fragment
Using .config as base
Merging /tmp/fragment
Value of CONFIG_BUG_ON_DATA_CORRUPTION is redefined by fragment /tmp/fragment:
Previous value: # CONFIG_BUG_ON_DATA_CORRUPTION is not set
New value: CONFIG_BUG_ON_DATA_CORRUPTION=y
 ...

[a13xp0p0v]

See https://pypi.org/project/kconfiglib/

[a13xp0p0v]

That tool would also help to filter out the kconfig options that can't be enabled for the given kernel version.