Hi Janusz,
Enable the CCS_FLUSH bit 13 in the control pipe for render and compute engines in platforms starting from Meteor Lake (BSPEC 43904 and 47112).
Fixes: 972282c4cf24 ("drm/i915/gen12: Add aux table invalidate for all engines")
I'm not sure why you think that your change fixes that commit. Can you please explain?
Hardware folks have provided a new sequence for performing the quiescing of the engines... that's how it is :)
Thanks, Andi