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<p class="MsoNormal"><span lang="DE">Dear updates maintainers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
<p class="MsoNormal">21u is stable in OpenJDK for more than one year, and the next LTS, 25,<o:p></o:p></p>
<p class="MsoNormal">is already coming up in less than a year. Thus I want to remind<o:p></o:p></p>
<p class="MsoNormal">maintainers of the rules for eligible changes to 17. I will be more
<o:p></o:p></p>
<p class="MsoNormal">strict on approving changes to 17 in future. As this was very well written<o:p></o:p></p>
<p class="MsoNormal">by Andrew Haley, I want to cite the mail of him addressing the topic<o:p></o:p></p>
<p class="MsoNormal">for jdk11:<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">---------------------------------------------------------------------------<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">In general, new features and performance improvements from later JDK<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">releases will not be accepted. There may be exceptions in some cases,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">but they will be very unusual, perhaps in cases of gross performance<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">problems on some systems. We'll address these as they arise.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">Any reasonable bug fix that improves the stability, security, or performance<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">of JDK 11u
</span>(here: 17u) <span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">
in a significant way should be considered.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">Bugs fitting into one or more of the following categories will usually<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">be accepted for approval:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"> CPU fix merges (i.e. critical security bugs)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"> TZData updates<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"> Test fixes (and extra tests - more testing is always welcome!)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"> Changes to root CACerts<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"> Changes to the build number<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"> Fixes specific to downstream builders' projects<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"> i18n / l10n changes<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none">In addition this list, we will consider<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"> Build system improvements, particularly for stability and reproducibility<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"> Changes necessary to make 11u work on new operating systems and hardware.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:black;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal">See also <a href="https://mail.openjdk.org/pipermail/jdk-updates-dev/2021-October/009521.html">
https://mail.openjdk.org/pipermail/jdk-updates-dev/2021-October/009521.html</a>.<o:p></o:p></p>
<p class="MsoNormal">If you depend on a change not eligible to be backported to 17, look
<o:p></o:p></p>
<p class="MsoNormal">into moving to 21 or later!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best regards, <o:p></o:p></p>
<p class="MsoNormal"> Goetz<o:p></o:p></p>
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