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+.. SPDX-License-Identifier: GPL-2.0
+
+============================
+Run Tests without kunit_tool
+============================
+
+If we do not want to use kunit_tool (For example: we want to integrate
+with other systems, or run tests on real hardware), we can
+include KUnit in any kernel, read out results, and parse manually.
+
+.. note:: KUnit is not designed for use in a production system. It is
+          possible that tests may reduce the stability or security of
+          the system.
+
+Configure the Kernel
+====================
+
+KUnit tests can run without kunit_tool. This can be useful, if:
+
+- We have an existing kernel configuration to test.
+- Need to run on real hardware (or using an emulator/VM kunit_tool
+  does not support).
+- Wish to integrate with some existing testing systems.
+
+KUnit is configured with the ``CONFIG_KUNIT`` option, and individual
+tests can also be built by enabling their config options in our
+``.config``. KUnit tests usually (but don't always) have config options
+ending in ``_KUNIT_TEST``. Most tests can either be built as a module,
+or be built into the kernel.
+
+.. note ::
+
+	We can enable the ``KUNIT_ALL_TESTS`` config option to
+	automatically enable all tests with satisfied dependencies. This is
+	a good way of quickly testing everything applicable to the current
+	config.
+
+Once we have built our kernel (and/or modules), it is simple to run
+the tests. If the tests are built-in, they will run automatically on the
+kernel boot. The results will be written to the kernel log (``dmesg``)
+in TAP format.
+
+If the tests are built as modules, they will run when the module is
+loaded.
+
+.. code-block :: bash
+
+	# modprobe example-test
+
+The results will appear in TAP format in ``dmesg``.
+
+.. note ::
+
+	If ``CONFIG_KUNIT_DEBUGFS`` is enabled, KUnit test results will
+	be accessible from the ``debugfs`` filesystem (if mounted).
+	They will be in ``/sys/kernel/debug/kunit/<test_suite>/results``, in
+	TAP format.