[Bug 108700] 2x Media CPU power usage, or 15% perf drop when CPU bound GPU use-case is TDP limited

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108700

--- Comment #8 from Eero Tamminen <eero.t.tamminen at intel.com> ---
STIBP fixes in drm-tip v4.20-rc5 fix the CPU bound 3D cases performance
(test-case 1).

However, those fixes, nor disabling Spectre mitigation completely from kernel
command line (checked by David), do NOT have any impact on the Media
performance regression (test-case 2).

David will try to bisect the Media perf regression.

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