Public bug reported:

The kernel is still a bit unstable, according to upstream this should
fix my recent hangs:

drm/i915/execlists: Always force a context reload when rewinding
RING_TAIL

https://gitlab.freedesktop.org/drm/intel/issues/1164
https://gitlab.freedesktop.org/drm/intel/issues/1150


Also there are some more crash patches in 5.6-rc1 that could be cherry-
picked back:

76f9764cc3d5 ("drm/i915: Introduce a vma.kref")
bbca083de291 ("drm/i915: Serialise i915_active_acquire() with 
__active_retire()")

from https://gitlab.freedesktop.org/drm/intel/issues/1201

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

** Description changed:

  The kernel is still a bit unstable, according to upstream this should
  fix my recent hangs:
  
  drm/i915/execlists: Always force a context reload when rewinding
  RING_TAIL
  
  https://gitlab.freedesktop.org/drm/intel/issues/1164
+ https://gitlab.freedesktop.org/drm/intel/issues/1150
+ 
  
  Also there are some more crash patches in 5.6-rc1 that could be cherry-
  picked back:
  
  76f9764cc3d5 ("drm/i915: Introduce a vma.kref")
  bbca083de291 ("drm/i915: Serialise i915_active_acquire() with 
__active_retire()")
  
  from https://gitlab.freedesktop.org/drm/intel/issues/1201

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https://bugs.launchpad.net/bugs/1863898

Title:
  More i915 fixes to cherry-pick

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