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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI][SHARDS] igt@gem_ctx_isolation@vcs1-nonpriv - fail - igt@gem_ctx_isolation@vcs1-nonpriv - fail - Failed assertion: num_errors == 0, registers mistached between nonpriv read/writes"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111329#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI][SHARDS] igt@gem_ctx_isolation@vcs1-nonpriv - fail - igt@gem_ctx_isolation@vcs1-nonpriv - fail - Failed assertion: num_errors == 0, registers mistached between nonpriv read/writes"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111329">bug 111329</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>Related fix in commit f1c4d157ab9b13c1228f3b8ad7747126785460d0 (HEAD ->
drm-intel-next-queued, drm-intel/for-linux-next,
drm-intel/drm-intel-next-queued)
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Thu Aug 8 12:06:12 2019 +0100
drm/i915: Fix up the inverse mapping for default ctx->engines[]
The order in which we store the engines inside default_engines() for the
legacy ctx->engines[] has to match the legacy I915_EXEC_RING selector
mapping in execbuf::user_map. If we present VCS2 as being the second
instance of the video engine, legacy userspace calls that I915_EXEC_BSD2
and so we need to insert it into the second video slot.
v2: Record the legacy mapping (hopefully we can remove this need in the
future)
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][SHARDS]igt@gem_exec_params@invalid-bsd-ring - fail - Failed assertion: __gem_execbuf(fd, &execbuf) == -22"
href="show_bug.cgi?id=111328">https://bugs.freedesktop.org/show_bug.cgi?id=111328</a>
Fixes: 2edda80db3d0 ("drm/i915: Rename engines to match their user
interface")
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Cc: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>>
Reviewed-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>> #v1
Reviewed-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>>
Link:
<a href="https://patchwork.freedesktop.org/patch/msgid/20190808110612.23539-2-chris@chris-wilson.co.uk">https://patchwork.freedesktop.org/patch/msgid/20190808110612.23539-2-chris@chris-wilson.co.uk</a></pre>
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