A nit but
+The bulk of kernel tests are written using either the :doc:`kselftest +<kselftest>` or :doc:`KUnit <kunit/index>` frameworks. These both provide +infrastructure to help make running tests and groups of tests easier, as well +as providing helpers to aid in writing new tests.
If you just mention the relevant file, the docs build will make links for you...so just "Documentation/dev-tools/kselftest.rst" rather than the :doc: directive. That helps to improve the readability of the plain-text documentation as well.
+`KUnit` tests therefore are best written against small, self-contained parts +of the kernel, which can be tested in isolation. This aligns well with the +concept of Unit testing.
If you want literal text, you need a double backtick: ``KUnit``. Otherwise I'd just use normal quotes.
Thanks,
jon