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  <section id="skiboot-5-10-4">
<span id="id1"></span><h1>skiboot-5.10.4<a class="headerlink" href="#skiboot-5-10-4" title="Permalink to this headline">¶</a></h1>
<p>skiboot 5.10.4 was released on Wednesday April 4th, 2018. It replaces
<a class="reference internal" href="skiboot-5.10.3.html#skiboot-5-10-3"><span class="std std-ref">skiboot-5.10.3</span></a> as the current stable release in the 5.10.x series.</p>
<p>It is recommended that 5.10.3 be used instead of any previous 5.10.x version
due to the bug fixes and debugging enhancements in it.</p>
<p>Over <a class="reference internal" href="skiboot-5.10.3.html#skiboot-5-10-3"><span class="std std-ref">skiboot-5.10.3</span></a>, we have one bug fix:</p>
<ul>
<li><p>xive: disable store EOI support</p>
<p>Hardware has limitations which would require to put a sync after each
store EOI to make sure the MMIO operations that change the ESB state
are ordered. This is a killer for performance and the PHBs do not
support the sync. So remove the store EOI for the moment, until
hardware is improved.</p>
<p>Also, while we are at changing the XIVE source flags, let’s fix the
settings for the PHB4s which should follow these rules :</p>
<ul class="simple">
<li><p>SHIFT_BUG    for DD10</p></li>
<li><p>STORE_EOI    for DD20 and if enabled</p></li>
<li><p>TRIGGER_PAGE for DDx0 and if not STORE_EOI</p></li>
</ul>
</li>
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