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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [BDW Regression]igt/gem_seqno_wrap fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78891#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - [BDW Regression]igt/gem_seqno_wrap fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78891">bug 78891</a>
from <span class="vcard"><a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> <span class="fn">Guo Jinxian</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=99460" name="attach_99460" title="dmesg">attachment 99460</a> <a href="attachment.cgi?id=99460&action=edit" title="dmesg">[details]</a></span>
dmesg
(In reply to <a href="show_bug.cgi?id=78891#c3">comment #3</a>)
<span class="quote">> (In reply to <a href="show_bug.cgi?id=78891#c2">comment #2</a>)
> > This is due to rendercopy failing straight from init. And gem_seqno_wrap
> > is leaning on that. So i expect gem_render_copy to fail also.
> >
> > I noticed that if I force gpu to reset itself, then after successful reset
> > the rendercopy works as expected.
>
> Please test gem_render_copy after this gem_seqno_wrap failing.
>
> The gpu reset doesn't always fix the situation. It seems that PDPs get left
> sometimes to zero after init/reset.</span >
[root@x-bdw09 tests]# ./gem_seqno_wrap
IGT-Version: 1.6-g737d248 (x86_64) (Linux:
3.15.0-rc3_drm-intel-nightly_0791a3_20140520+ x86_64)
Test assertion failure function cmp_bo, file gem_seqno_wrap.c:115:
Last errno: 0, Success
Failed assertion: *vaddr++ == val
1: 0xfffffffc differs from assumed 0x0
seqno_before_test 0x1, approximated seqno on test fail 0x1
[root@x-bdw09 tests]# ./gem_render_copy
IGT-Version: 1.6-g737d248 (x86_64) (Linux:
3.15.0-rc3_drm-intel-nightly_0791a3_20140520+ x86_64)
Test assertion failure function scratch_buf_check, file gem_render_copy.c:117:
Last errno: 0, Success
Failed assertion: val == color
Expected 0xffff00ff, found 0xfff0ff00 at (502,502)
[root@x-bdw09 tests]# cat /proc/cmdline</pre>
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