The `-Xmaxjitcodesize` flag currently serves as an alias for `-XX:ReservedCodeCacheSize`, setting the reserved code cache size in bytes (i.e., the maximum size for the JIT-compiled code cache). It has been long overdue for deprecation, being obsoleted on Solaris as far back as 2002 (JDK 1.4.0). To simplify JVM configuration and ease flag discovery for users, this redundant flag has now been marked as deprecated, with the intent to be removed in future releases.

Current users of `-Xmaxjitcodesize` should instead use `-XX:ReservedCodeCacheSize`.