5 This is a small set of sanity tests for the kernel livepatching.
7 The test suite loads and unloads several test kernel modules to verify
8 livepatch behavior. Debug information is logged to the kernel's message
9 buffer and parsed for expected messages. (Note: the tests will compare
10 the message buffer for only the duration of each individual test.)
16 Set these config options and their prerequisites:
19 CONFIG_TEST_LIVEPATCH=m
25 Test kernel modules are built as part of lib/ (make modules) and need to
26 be installed (make modules_install) as the test scripts will modprobe
29 To run the livepatch selftests, from the top of the kernel source tree:
31 % make -C tools/testing/selftests TARGETS=livepatch run_tests
37 See the common functions.sh file for the existing collection of utility
38 functions, most importantly setup_config(), start_test() and
39 check_result(). The latter function greps the kernel's ring buffer for
40 "livepatch:" and "test_klp" strings, so tests be sure to include one of
41 those strings for result comparison. Other utility functions include
42 general module loading and livepatch loading helpers (waiting for patch
43 transitions, sysfs entries, etc.)