[Bug 111329] [CI][SHARDS] igt at gem_ctx_isolation@vcs1-nonpriv - fail - igt at gem_ctx_isolation@vcs1-nonpriv - fail - Failed assertion: num_errors == 0, registers mistached between nonpriv read/writes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111329

--- Comment #3 from Chris Wilson <chris at chris-wilson.co.uk> ---
Related fix in commit f1c4d157ab9b13c1228f3b8ad7747126785460d0 (HEAD ->
drm-intel-next-queued, drm-intel/for-linux-next,
drm-intel/drm-intel-next-queued)
Author: Chris Wilson <chris at 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 at chris-wilson.co.uk>
    Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com> #v1
    Reviewed-by: Mika Kuoppala <mika.kuoppala at linux.intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20190808110612.23539-2-chris@chris-wilson.co.uk

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