[PATCH 0/3] Clean up some CI failures for GuC submission

[Matthew Brost]

Address CI failure related to reset [1]. In addition to the public CI
failure we also fix several issues uncovered recenting in our internal
CI related to resets. Patch #1 address all of these issues.

Workaround an existing memory corruption, in gt_lrc selftest, exposed by
enabling GuC submission [2].

Lastly, add a selftest to give us confidence in some of the reset code
that is rather hard / intermittent to exercise via IGTs.

Signed-off-by: Matthew Brost <matthew.brost at intel.com>

[1] https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_10456/fi-rkl-guc/igt@i915_selftest@live@workarounds.html
[2] https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_20772/fi-rkl-guc/igt@i915_selftest@live@gt_lrc.html

Matthew Brost (3):
  drm/i915/guc: Fix several issues related to resets / request
    cancelation
  drm/i915/selftests: Fix memory corruption in live_lrc_isolation
  drm/i915/selftests: Add initial GuC selftest for scrubbing lost G2H

 drivers/gpu/drm/i915/gt/intel_context_types.h |   4 +
 drivers/gpu/drm/i915/gt/selftest_lrc.c        |  29 +++-
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c |  61 ++++++---
 drivers/gpu/drm/i915/gt/uc/selftest_guc.c     | 126 ++++++++++++++++++
 .../drm/i915/selftests/i915_live_selftests.h  |   1 +
 .../i915/selftests/intel_scheduler_helpers.c  |  12 ++
 .../i915/selftests/intel_scheduler_helpers.h  |   2 +
 7 files changed, 218 insertions(+), 17 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/gt/uc/selftest_guc.c

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2.28.0