[Bug 111754] [CI][BAT]igt at i915_selftest@live_workarounds - dmesg-fail - *ERROR* REF workaround lost on before reset!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111754

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #4 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit e5de91e68c5ccaf4ef3e5aa265b469e186ebfa65 (HEAD -> drm-intel-next-queued,
drm-intel/drm-intel-next-queued)
Author: Chris Wilson <chris at chris-wilson.co.uk>
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: https://bugs.freedesktop.org/show_bug.cgi?id=111754
    Fixes: 7f0cc34b5349 ("drm/i915/tgl: Implement Wa_1406941453")
    Testcase: igt/i915_selftest/live_workarounds
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Lucas De Marchi <lucas.demarchi at intel.com>
    Cc: Stuart Summers <stuart.summers at intel.com>
    Cc: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
    Cc: Jani Nikula <jani.nikula at linux.intel.com>
    Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
    Acked-by: Lucas De Marchi <lucas.demarchi at intel.com>
    Link:
https://patchwork.freedesktop.org/patch/msgid/20190920081254.18389-1-chris@chris-wilson.co.uk

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