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<body><span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span> changed
<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [BAT][GDG] igt@gem_mmap_gtt@basic-small-bo-tiledx - fail - Failed assertion: memcmp(ptr , tiled_pattern, PAGE_SIZE) == 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102575">bug 102575</a>
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<table border="1" cellspacing="0" cellpadding="8">
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Resolution</td>
<td>FIXED
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<td>---
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<td style="text-align:right;">Status</td>
<td>RESOLVED
</td>
<td>REOPENED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [BAT][GDG] igt@gem_mmap_gtt@basic-small-bo-tiledx - fail - Failed assertion: memcmp(ptr , tiled_pattern, PAGE_SIZE) == 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102575#c17">Comment # 17</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [BAT][GDG] igt@gem_mmap_gtt@basic-small-bo-tiledx - fail - Failed assertion: memcmp(ptr , tiled_pattern, PAGE_SIZE) == 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102575">bug 102575</a>
from <span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span></b>
<pre>(In reply to Chris Wilson from <a href="show_bug.cgi?id=102575#c16">comment #16</a>)
<span class="quote">> So I thought this was a cpu issue, turns out to be unknown swizzling instead:
>
> commit a0f2d23b7d3d4226a0a7637a9240bfa86f08c1d3 (HEAD, upstream/master)
> Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Date: Fri Jun 8 17:29:46 2018 +0100
>
> igt/gem_mmap_gtt: Checking tiling pattern requires known swizzling
>
> As the swizzling is baked into the tiling pattern, the swizzling has to
> be consistent across the entire GTT mmap for our tests to work. However,
> under L-shaped memory configurations on older architectures, the
> swizzling varied depending on which region the page found itself in --
> invalidating our assumptions and ability to predict the tiling pattern.
>
> Reported-by: Adric Blake <<a href="mailto:promarbler14@gmail.com">promarbler14@gmail.com</a>>
> Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [GM45] igt@gem_mmap_gtt@basic-small-bo-tiledx - fail - Failed assertion: memcmp(ptr , tiled_pattern, PAGE_SIZE) == 0 (edit)"
href="show_bug.cgi?id=106848">https://bugs.freedesktop.org/show_bug.cgi?id=106848</a>
> Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
> Reviewed-by: Tvrtko Ursulin <<a href="mailto:tvrtko.ursulin@intel.com">tvrtko.ursulin@intel.com</a>>
>
> Some gdg oddities still remain. Hopefully this will throw some light on to
> them as well.</span >
Still happening, unless the following errors should be in a separate bug:
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_62/fi-gdg-551/igt@gem_tiled_partial_pwrite_pread@writes-after-reads.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_62/fi-gdg-551/igt@gem_tiled_partial_pwrite_pread@writes-after-reads.html</a>
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_62/fi-gdg-551/igt@gem_tiled_pread_pwrite.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_62/fi-gdg-551/igt@gem_tiled_pread_pwrite.html</a>
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_62/fi-gdg-551/igt@gem_tiled_partial_pwrite_pread@writes.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_62/fi-gdg-551/igt@gem_tiled_partial_pwrite_pread@writes.html</a>
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_62/fi-gdg-551/igt@gem_set_tiling_vs_pwrite.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_62/fi-gdg-551/igt@gem_set_tiling_vs_pwrite.html</a></pre>
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