Bug 111327

The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* ICL: igt@gem_ctx_shared@exec-single-timeline-bsd2 - fail - Failed assertion: nop_sync(i915, ctx, engine, (1000*(1000*(1000)))) == 0
  - https://intel-gfx-ci.01.org/tree/drm-tip/Trybot_4676/shard-iclb1/igt@gem_ctx_shared@exec-single-timeline-bsd2.html
  - https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6647/shard-iclb4/igt@gem_ctx_shared@exec-single-timeline-bsd2.html
  - https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13902/shard-iclb1/igt@gem_ctx_shared@exec-single-timeline-bsd2.html
  - https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6649/shard-iclb4/igt@gem_ctx_shared@exec-single-timeline-bsd2.html
  - https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_3324/shard-iclb2/igt@gem_ctx_shared@exec-single-timeline-bsd2.html
  - https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_13906/shard-iclb1/igt@gem_ctx_shared@exec-single-timeline-bsd2.html

I think the issue here is related to

commit f1c4d157ab9b13c1228f3b8ad7747126785460d0 (HEAD -> drm-intel-next-queued, drm-intel/for-linux-next, drm-intel/drm-intel-next-queued)
Author: Chris Wilson <chris@chris-wilson.co.uk>
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: https://bugs.freedesktop.org/show_bug.cgi?id=111328
    Fixes: 2edda80db3d0 ("drm/i915: Rename engines to match their user interface")
    Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
    Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
    Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> #v1
    Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
    Link: https://patchwork.freedesktop.org/patch/msgid/20190808110612.23539-2-chris@chris-wilson.co.uk

but I'm not sure, as my understanding for the bug is that we oversubscribed to an engine and blocked ourselves.

A CI Bug Log filter associated to this bug has been updated:

{- ICL: igt@gem_ctx_shared@exec-single-timeline-bsd2 - fail - Failed assertion: nop_sync(i915, ctx, engine, (1000*(1000*(1000)))) == 0 -}
{+ ICL: igt@gem_ctx_shared@exec-single-timeline-bsd2 - fail - Failed assertion: nop_sync(i915, ctx, engine, (1000*(1000*(1000)))) == 0 +}

New failures caught by the filter:

  * https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6654/shard-iclb2/igt@gem_ctx_shared@exec-single-timeline-bsd1.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6655/shard-iclb1/igt@gem_ctx_shared@exec-single-timeline-bsd1.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_338/fi-icl-dsi/igt@gem_ctx_shared@exec-single-timeline-bsd1.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_338/fi-icl-guc/igt@gem_ctx_shared@exec-single-timeline-bsd1.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_338/fi-icl-u2/igt@gem_ctx_shared@exec-single-timeline-bsd1.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_338/fi-icl-u3/igt@gem_ctx_shared@exec-single-timeline-bsd1.html
  * https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_338/fi-icl-u4/igt@gem_ctx_shared@exec-single-timeline-bsd1.html

commit d5b2a3a4f85ad135123db8fc97ccdbf893546330
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Fri Aug 9 13:31:53 2019 +0100

    drm/i915: Check for a second VCS engine more carefully