Resets are notoriously hard to get fully working and notoriously racey,
especially with selftests / IGTs that do all sorts of wild things that
would be near impossible to hit during normal use cases. Even though
likely impossible to hit, anything selftests / IGTs uncover needs to be
fixed. This series addresses 7 such issues, adds a workaround to a
selftest, and add another selftest to prove scrubbing of G2H during a
reset works.
v2:
(Daniel Vetter)
- Split fixes into individual patches
- A kernel doc
- A VLK ref for selftest workaround
(Checkpatch)
- Fix warnings
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Matthew Brost (9):
drm/i915/guc: Fix blocked context accounting
drm/i915/guc: outstanding G2H accounting
drm/i915/guc: Unwind context requests in reverse order
drm/i915/guc: Don't drop ce->guc_active.lock when unwinding context
drm/i915/guc: Flush the work queue for GuC generated G2H
drm/i915/guc: Do not clear enable during reset in an enable is
inflight
drm/i915/guc: Don't enable scheduling on a banned context
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 | 18 +++
drivers/gpu/drm/i915/gt/selftest_lrc.c | 29 +++-
.../gpu/drm/i915/gt/uc/intel_guc_submission.c | 69 +++++++---
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, 239 insertions(+), 18 deletions(-)
create mode 100644 drivers/gpu/drm/i915/gt/uc/selftest_guc.c
--
2.32.0
