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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Kernel unaligned access at TPC[105d9fb4] nvkm_instobj_wr32+0x14/0x20 [nouveau]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96836">96836</a>
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<th>Summary</th>
<td>Kernel unaligned access at TPC[105d9fb4] nvkm_instobj_wr32+0x14/0x20 [nouveau]
</td>
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<th>Product</th>
<td>xorg
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>SPARC
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Driver/nouveau
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<th>Assignee</th>
<td>nouveau@lists.freedesktop.org
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<th>Reporter</th>
<td>ciaran.gillespie@gmail.com
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<th>QA Contact</th>
<td>xorg-team@lists.x.org
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<p>
<div>
<pre>When attempting to use Nouveau driver with Xorg on my SunBlade 2500 running the
latested build from Debian-9.0 Sid SPARC64 CPU 0 runs up to 100% and then
eventually the Xorg session shuts down. It appears that it's timing out on a
GPU lock. A bunch of messages appears in the Xorg.0.log indicating fifo:
CACH_ERROR also with in the messages log there are several repeating errors.
log_unaligned: 598 callbacks suppressed
Kernel unaligned access at TPC[105d9fb4] nvkm_instobj_wr32+0x14/0x20 [nouveau]
Eventually the Xorg session gives up and times out.
I'll try and attach some more logs but it appears to have something to do with
the iowrite32_native macro on SPARC V9 systems.</pre>
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