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<section id="skiboot-6-0-17">
<span id="id1"></span><h1>skiboot-6.0.17<a class="headerlink" href="#skiboot-6-0-17" title="Permalink to this headline">¶</a></h1>
<p>skiboot 6.0.17 was released on Wednesday February 20th, 2019. It replaces
<a class="reference internal" href="skiboot-6.0.16.html#skiboot-6-0-16"><span class="std std-ref">skiboot-6.0.16</span></a> as the current stable release in the 6.0.x series.</p>
<p>It is recommended that 6.0.17 be used instead of any previous 6.0.x version
due to the bug fixes it contains.</p>
<p>Bug fixes included in this release are:</p>
<ul>
<li><p>core/opal: Print PIR value in exit path, which is useful for debugging.</p></li>
<li><p>core/ipmi: Improve error message</p></li>
<li><p>hdata: Fix dtc warnings</p>
<p>Fix dtc warnings related to mcbist node</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="ne">Warning</span> <span class="p">(</span><span class="n">reg_format</span><span class="p">):</span> <span class="s2">"reg"</span> <span class="nb">property</span> <span class="ow">in</span> <span class="o">/</span><span class="n">xscom</span><span class="o">@</span><span class="mi">623</span><span class="n">fc00000000</span><span class="o">/</span><span class="n">mcbist</span><span class="o">@</span><span class="mi">1</span> <span class="n">has</span> <span class="n">invalid</span> <span class="n">length</span> <span class="p">(</span><span class="mi">4</span> <span class="nb">bytes</span><span class="p">)</span> <span class="p">(</span><span class="c1">#address-cells == 1, #size-cells == 1)</span>
<span class="ne">Warning</span> <span class="p">(</span><span class="n">reg_format</span><span class="p">):</span> <span class="s2">"reg"</span> <span class="nb">property</span> <span class="ow">in</span> <span class="o">/</span><span class="n">xscom</span><span class="o">@</span><span class="mi">623</span><span class="n">fc00000000</span><span class="o">/</span><span class="n">mcbist</span><span class="o">@</span><span class="mi">2</span> <span class="n">has</span> <span class="n">invalid</span> <span class="n">length</span> <span class="p">(</span><span class="mi">4</span> <span class="nb">bytes</span><span class="p">)</span> <span class="p">(</span><span class="c1">#address-cells == 1, #size-cells == 1)</span>
<span class="ne">Warning</span> <span class="p">(</span><span class="n">reg_format</span><span class="p">):</span> <span class="s2">"reg"</span> <span class="nb">property</span> <span class="ow">in</span> <span class="o">/</span><span class="n">xscom</span><span class="o">@</span><span class="mi">603</span><span class="n">fc00000000</span><span class="o">/</span><span class="n">mcbist</span><span class="o">@</span><span class="mi">1</span> <span class="n">has</span> <span class="n">invalid</span> <span class="n">length</span> <span class="p">(</span><span class="mi">4</span> <span class="nb">bytes</span><span class="p">)</span> <span class="p">(</span><span class="c1">#address-cells == 1, #size-cells == 1)</span>
<span class="ne">Warning</span> <span class="p">(</span><span class="n">reg_format</span><span class="p">):</span> <span class="s2">"reg"</span> <span class="nb">property</span> <span class="ow">in</span> <span class="o">/</span><span class="n">xscom</span><span class="o">@</span><span class="mi">603</span><span class="n">fc00000000</span><span class="o">/</span><span class="n">mcbist</span><span class="o">@</span><span class="mi">2</span> <span class="n">has</span> <span class="n">invalid</span> <span class="n">length</span> <span class="p">(</span><span class="mi">4</span> <span class="nb">bytes</span><span class="p">)</span> <span class="p">(</span><span class="c1">#address-cells == 1, #size-cells == 1)</span>
</pre></div>
</div>
<p>Ideally we should add proper xscom range here… but we are not getting that
information in HDAT today. Lets fix warning until we get proper data in HDAT.</p>
</li>
<li><p>hdata/test: workaround dtc bugs</p>
<p>In dtc v1.4.5 to at least v1.4.7 there have been a few bugs introduced
that change the layout of what’s produced in the dts. In order to be
immune from them, we should use the (provided) dtdiff utility, but we
also need to run the dts we’re diffing against through a dtb cycle in
order to ensure we get the same format as what the hdat_to_dt to dts
conversion will.</p>
<p>This fixes a bunch of unit test failures on the version of dtc shipped
with recent Linux distros such as Fedora 29.</p>
</li>
<li><p>firmware-versions: Add test case for parsing VERSION</p>
<p>Also make it possible to use with afl-lop/afl-fuzz just to help make
<em>sure</em> we’re all good.</p>
<p>Additionally, if we hit a entry in VERSION that is larger than our
buffer size, we skip over it gracefully rather than overwriting the
stack. This is only a problem if VERSION isn’t trusted, which as of
4b8cc05a94513816d43fb8bd6178896b430af08f it is verified as part of
Secure Boot.</p>
</li>
<li><p>core/cpu: HID update race</p>
<p>If the per-core HID register is updated concurrently by multiple
threads, updates can get lost. This has been observed during fast
reboot where the HILE bit does not get cleared on all cores, which
can cause machine check exception interrupts to crash.</p>
<p>Fix this by only updating HID on thread0.</p>
</li>
<li><p>cpufeatures: Always advertise POWER8NVL as DD2</p>
<p>Despite the major version of PVR being 1 (0x004c0100) for POWER8NVL,
these chips are functionally equalent to P8/P8E DD2 levels.</p>
<p>This advertises POWER8NVL as DD2. As the result, skiboot adds
ibm,powerpc-cpu-features/processor-control-facility for such CPUs and
the linux kernel can use hypervisor doorbell messages to wake secondary
threads; otherwise “KVM: CPU %d seems to be stuck” would appear because
of missing LPCR_PECEDH.</p>
</li>
</ul>
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