[Bug 110331] [CI][SHARDS] igt@* - incomplete - NMI backtrace for cpu \d skipped: idling at acpi_processor_ffh_cstate_enter

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110331

--- Comment #3 from Martin Peres <martin.peres at free.fr> ---
Let's monitor the failure rate now that the following commit has landed:

https://cgit.freedesktop.org/drm/drm-intel/commit/?h=topic/core-for-CI&id=b573fba52f339dc4fadef7282af4a9413fd6173d

CL HACK: Disable ACPI idle drivertopic/core-for-CI
There were few system hung observed while running i915_pm_rpm igt test.
FDO https://bugs.freedesktop.org/show_bug.cgi?id=108840
Root cause is believed to due to page fault in ACPI idle driver.
(FDO comment 18).
It has been suggested by Daniel Vetter to disable ACPI idle
driver for Core-for-CI, only for ICL.

This hacky patch is only for ICL processor and for Core-for-CI branch.

v2: Fixed compilation errors raised by lkp.
    commit message improvement.

Cc: martin.peres at intel.com
Cc: daniel.vetter at intel.com

Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Link:
https://patchwork.freedesktop.org/patch/msgid/1554791361-27684-1-git-send-email-anshuman.gupta@intel.com

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