Sebastian Andrzej Siewior [off-list ref] writes:
One nit:
quoted hunk ↗ jump to hunk
diff --git a/Documentation/core-api/real-time/differences.rst b/Documentation/core-api/real-time/differences.rst
new file mode 100644
index 0000000000000..50d994a31e11c
--- /dev/null
+++ b/Documentation/core-api/real-time/differences.rst
@@ -0,0 +1,242 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+========================
+Significant differences
+========================
That heading text will appear in various places, including in the
rendering of your new index.rst file. In such a setting, "significant
differences" doesn't give a lot of information. Something like "How
realtime kernels differ" would be better, IMO.
Otherwise, this all looks good to me. Did you want me to pick it up, or
did you have another path in mind for this work?
Thanks,
jon