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-rw-r--r--Documentation/dev-tools/kselftest.rst5
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diff --git a/Documentation/dev-tools/kselftest.rst b/Documentation/dev-tools/kselftest.rst
index e80850eefe13..3bf371a938d0 100644
--- a/Documentation/dev-tools/kselftest.rst
+++ b/Documentation/dev-tools/kselftest.rst
@@ -151,6 +151,11 @@ Contributing new tests (details)
TEST_FILES, TEST_GEN_FILES mean it is the file which is used by
test.
+ * First use the headers inside the kernel source and/or git repo, and then the
+ system headers. Headers for the kernel release as opposed to headers
+ installed by the distro on the system should be the primary focus to be able
+ to find regressions.
+
Test Harness
============