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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
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<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT]igt@i915_selftest@live_workarounds - dmesg-fail - *ERROR* REF workaround lost on before reset!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111754">bug 111754</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT]igt@i915_selftest@live_workarounds - dmesg-fail - *ERROR* REF workaround lost on before reset!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111754#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT]igt@i915_selftest@live_workarounds - dmesg-fail - *ERROR* REF workaround lost on before reset!"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111754">bug 111754</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>commit e5de91e68c5ccaf4ef3e5aa265b469e186ebfa65 (HEAD -> drm-intel-next-queued,
drm-intel/drm-intel-next-queued)
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Fri Sep 20 09:12:54 2019 +0100
Revert "drm/i915/tgl: Implement Wa_1406941453"
Our sanitychecks indicate that while this register is context
saved/restore, the HW does not preserve this bit within the register --
it likely doesn't exist, or one of those mythical bits that the
architects insist does something despite all appearances to the
contrary.
For reference, SAMPLER_MODE is already in i915_reg.h as
GEN10_SAMPLER_MODE and is being setup in icl_ctx_workarounds_init() as
opposed to the chosen location here of rcs_engine_wa_init).
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT]igt@i915_selftest@live_workarounds - dmesg-fail - *ERROR* REF workaround lost on before reset!"
href="show_bug.cgi?id=111754">https://bugs.freedesktop.org/show_bug.cgi?id=111754</a>
Fixes: 7f0cc34b5349 ("drm/i915/tgl: Implement Wa_1406941453")
Testcase: igt/i915_selftest/live_workarounds
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Cc: Lucas De Marchi <<a href="mailto:lucas.demarchi@intel.com">lucas.demarchi@intel.com</a>>
Cc: Stuart Summers <<a href="mailto:stuart.summers@intel.com">stuart.summers@intel.com</a>>
Cc: Radhakrishna Sripada <<a href="mailto:radhakrishna.sripada@intel.com">radhakrishna.sripada@intel.com</a>>
Cc: Jani Nikula <<a href="mailto:jani.nikula@linux.intel.com">jani.nikula@linux.intel.com</a>>
Cc: Joonas Lahtinen <<a href="mailto:joonas.lahtinen@linux.intel.com">joonas.lahtinen@linux.intel.com</a>>
Acked-by: Lucas De Marchi <<a href="mailto:lucas.demarchi@intel.com">lucas.demarchi@intel.com</a>>
Link:
<a href="https://patchwork.freedesktop.org/patch/msgid/20190920081254.18389-1-chris@chris-wilson.co.uk">https://patchwork.freedesktop.org/patch/msgid/20190920081254.18389-1-chris@chris-wilson.co.uk</a></pre>
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