TELCODOCS-2127: RN for kernelpagesize API

Author: rohennes

release_notes/ocp-4-19-release-notes.adoc

@@ -480,6 +480,11 @@ We will have details here when {product-title} {product-version} is released.
 [id="ocp-release-notes-scalability-and-performance_{context}"]
 === Scalability and performance
 
+[id="ocp-release-notes-scalability-and-performance_kernelpagesize_{context}"]
+==== Performance profile kernel page size configuration
+
+With this update, you can specify larger kernel page sizes to improve performance for memory-intensive, high-performance workloads on ARM infrastructure nodes with the realtime kernel disabled. For more information, see xref:../scalability_and_performance/cnf-tuning-low-latency-nodes-with-perf-profile.adoc#cnf-configuring-kernal-page-size_cnf-low-latency-perf-profile[Configuring kernel page sizes].
+
 [id="ocp-release-notes-etcd-certificates_{context}"]
 === Security