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<body><span class="vcard"><a class="email" href="mailto:kevin.strasser@linux.intel.com" title="Kevin Strasser <kevin.strasser@linux.intel.com>"> <span class="fn">Kevin Strasser</span></a>
</span> changed
<a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [HSW BSW SKL]igt/gem_mmap_gtt/big-copy fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90412">bug 90412</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEW
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<td>ASSIGNED
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<td style="text-align:right;">QA Contact</td>
<td>intel-gfx-bugs@lists.freedesktop.org
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<td>kevin.strasser@linux.intel.com
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<b><a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [HSW BSW SKL]igt/gem_mmap_gtt/big-copy fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90412#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - [HSW BSW SKL]igt/gem_mmap_gtt/big-copy fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=90412">bug 90412</a>
from <span class="vcard"><a class="email" href="mailto:kevin.strasser@linux.intel.com" title="Kevin Strasser <kevin.strasser@linux.intel.com>"> <span class="fn">Kevin Strasser</span></a>
</span></b>
<pre>This test is mapping 2 blocks of memory which seem to be corrupting one
another. That is, if I write a page of data to index 0 of block b, I can see
the same page at index 2304 of block a, followed by 255 pages of cleared
memory. I would have to assume that this chunk of memory is associated with a
cache line. In any case, given that smaller object sizes are working there
appears to be some limit with how much memory we can map without overlap. I'll
continue investigating.</pre>
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