✗ Xe.CI.Full: failure for drm/i915/cmtg: Disable the CMTG (rev8)

[Gustavo Sousa]

Quoting Patchwork (2025-01-25 00:03:21-03:00)
>== Series Details ==
>
>Series: drm/i915/cmtg: Disable the CMTG (rev8)
>URL   : https://patchwork.freedesktop.org/series/142946/
>State : failure
>
>== Summary ==
>
>CI Bug Log - changes from xe-2549-b36df02c99e3246ba2a90e951c71797327374db7_full -> xe-pw-142946v8_full
>====================================================
>
>Summary
>-------
>
>  **FAILURE**
>
>  Serious unknown changes coming with xe-pw-142946v8_full absolutely need to be
>  verified manually.
>  
>  If you think the reported changes have nothing to do with the changes
>  introduced in xe-pw-142946v8_full, please notify your bug team (I915-ci-infra at lists.freedesktop.org) to allow them
>  to document this new failure mode, which will reduce false positives in CI.
>
>  
>
>Participating hosts (4 -> 4)
>------------------------------
>
>  No changes in participating hosts
>
>Possible new issues
>-------------------
>
>  Here are the unknown changes that may have been introduced in xe-pw-142946v8_full:
>
>### IGT changes ###
>
>#### Possible regressions ####
>
>  * igt at kms_ccs@crc-primary-basic-4-tiled-lnl-ccs at pipe-a-edp-1:
>    - shard-lnl:          [PASS][1] -> [INCOMPLETE][2] +1 other test incomplete
>   [1]: https://intel-gfx-ci.01.org/tree/intel-xe/xe-2549-b36df02c99e3246ba2a90e951c71797327374db7/shard-lnl-3/igt@kms_ccs@crc-primary-basic-4-tiled-lnl-ccs@pipe-a-edp-1.html
>   [2]: https://intel-gfx-ci.01.org/tree/intel-xe/xe-pw-142946v8/shard-lnl-1/igt@kms_ccs@crc-primary-basic-4-tiled-lnl-ccs@pipe-a-edp-1.html

Not sure how this test could be related to the CMTG getting disabled at
module load. I would expect more issues to pop up for LNL if disabling
the CMTG would cause problems.

>
>  * igt at kms_color@deep-color:
>    - shard-bmg:          NOTRUN -> [INCOMPLETE][3] +1 other test incomplete
>   [3]: https://intel-gfx-ci.01.org/tree/intel-xe/xe-pw-142946v8/shard-bmg-1/igt@kms_color@deep-color.html

If we look at
https://intel-gfx-ci.01.org/tree/intel-xe/xe-pw-142946v8/shard-bmg-1/boot12.txt,
we will see that CMTG was not being used, so this patch did not cause
any functional change to the hardware state. So this incomplete should
be related to this.

>
>  * igt at kms_flip@flip-vs-blocking-wf-vblank at c-hdmi-a1:
>    - shard-adlp:         NOTRUN -> [INCOMPLETE][4] +1 other test incomplete
>   [4]: https://intel-gfx-ci.01.org/tree/intel-xe/xe-pw-142946v8/shard-adlp-3/igt@kms_flip@flip-vs-blocking-wf-vblank@c-hdmi-a1.html

We only read the CMTG state for ADL, but we do not disable it. This
incomplete should not be related to this patch.

>
>  * igt at kms_force_connector_basic@force-edid:
>    - shard-adlp:         [PASS][5] -> [DMESG-WARN][6] +5 other tests dmesg-warn
>   [5]: https://intel-gfx-ci.01.org/tree/intel-xe/xe-2549-b36df02c99e3246ba2a90e951c71797327374db7/shard-adlp-6/igt@kms_force_connector_basic@force-edid.html
>   [6]: https://intel-gfx-ci.01.org/tree/intel-xe/xe-pw-142946v8/shard-adlp-3/igt@kms_force_connector_basic@force-edid.html

Possibly related to
https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2953 .

>
>  * igt at kms_pm_rpm@basic-pci-d3-state:
>    - shard-bmg:          [PASS][7] -> [FAIL][8] +2 other tests fail
>   [7]: https://intel-gfx-ci.01.org/tree/intel-xe/xe-2549-b36df02c99e3246ba2a90e951c71797327374db7/shard-bmg-7/igt@kms_pm_rpm@basic-pci-d3-state.html
>   [8]: https://intel-gfx-ci.01.org/tree/intel-xe/xe-pw-142946v8/shard-bmg-4/igt@kms_pm_rpm@basic-pci-d3-state.html

This seems to have already happened before:

   https://intel-gfx-ci.01.org/tree/intel-xe/IGT_8193/shard-bmg-4/igt@kms_pm_rpm@basic-pci-d3-state.html

This does not seem related to this patch.

--
Gustavo Sousa