doc/release-notes/skiboot-4.1.html


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  <div class="section" id="skiboot-4-1">
<span id="id1"></span><h1>skiboot 4.1<a class="headerlink" href="#skiboot-4-1" title="Permalink to this headline">¶</a></h1>
<p>Skiboot 4.1 was released 10th December 2014. It was a release where more
development transitioned to the open source mailing list rather than internal
mailing lists.</p>
<p>Changes include:</p>
<blockquote>
<div><ul class="simple">
<li>We now build with -fstack-protector and -Werror</li>
<li>Stack checking extensions when built with STACK_CHECK=1</li>
<li>Reduced stack usage in some areas, -Wstack-usage=1024 now.<ul>
<li>Some functions could use 2kb stack, now all are &lt;1kb</li>
</ul>
</li>
<li>Unsafe libc functions such as sprintf() have been removed</li>
<li>Symbolic backtraces</li>
<li>expose skiboot symbol map to OS (via device-tree)</li>
<li>removed machine check interrupt patching in OPAL</li>
<li>occ/hbrt: Call stopOCC() for implementing reset OCC command from FSP</li>
<li>occ: Fix the low level ACK message sent to FSP on receiving {RESET/LOAD}_OCC</li>
<li>hardening to errors of various FSP code<ul>
<li>fsp: Avoid NULL dereference in case of invalid class_resp bits-
abort if device tree parsing fails</li>
<li>FSP: Validate fsp_msg in fsp_queue_msg</li>
<li>fsp-elog: Add various NULL checks</li>
</ul>
</li>
<li>Finessing of when to use error log vs prerror()</li>
<li>More i2c work</li>
<li>Can now run under Mambo simulator (see external/mambo/skiboot.tcl)
(commonly known as “POWER8 Functional Simulator”)</li>
<li>Document skiboot versioning scheme</li>
<li>opal: Handle more TFAC errors.<ul>
<li>TB_RESIDUE_ERR, FW_CONTROL_ERR and CHIP_TOD_PARITY_ERR</li>
</ul>
</li>
<li>ipmi: populate FRU data</li>
<li>rtc: Add a generic rtc cache</li>
<li>ipmi/rtc: use generic cache</li>
<li>Error Logging backend for bmc based machines</li>
<li>PSI: Drive link down on HIR</li>
<li>occ: Fix clearing of OCC interrupt on remote fix</li>
</ul>
</div></blockquote>
</div>


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