A couple of patches from Chris which implement pipelined migration and clears by atomically writing the PTEs in place before performing the actual blit.
Some ww utilities mainly for the accompanying selftests added by Thomas, as well as modified the above patches for ww locking- and lmem support.
The actual hook up to the i915 ttm backend is being worked on and not included yet, so this is considered to be an early review opportunity.
Chris Wilson (6): drm/i915/gt: Add an insert_entry for gen8_ppgtt drm/i915/gt: Add a routine to iterate over the pagetables of a GTT drm/i915/gt: Export the pinned context constructor drm/i915/gt: Pipelined page migration drm/i915/gt: Pipelined clear drm/i915/gt: Setup a default migration context on the GT
Thomas Hellström (3): drm/i915: Reference objects on the ww object list drm/i915: Break out dma_resv ww locking utilities to separate files drm/i915: Introduce a ww transaction helper
drivers/gpu/drm/i915/Makefile | 2 + drivers/gpu/drm/i915/gem/i915_gem_object.h | 9 +- drivers/gpu/drm/i915/gt/gen8_ppgtt.c | 68 ++ drivers/gpu/drm/i915/gt/intel_engine.h | 10 + drivers/gpu/drm/i915/gt/intel_engine_cs.c | 21 +- drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 2 + drivers/gpu/drm/i915/gt/intel_gt.c | 4 + drivers/gpu/drm/i915/gt/intel_gt_types.h | 3 + drivers/gpu/drm/i915/gt/intel_gtt.h | 7 + drivers/gpu/drm/i915/gt/intel_migrate.c | 684 ++++++++++++++++++ drivers/gpu/drm/i915/gt/intel_migrate.h | 65 ++ drivers/gpu/drm/i915/gt/intel_migrate_types.h | 15 + drivers/gpu/drm/i915/gt/intel_renderstate.h | 1 + drivers/gpu/drm/i915/gt/intel_ring.h | 1 + drivers/gpu/drm/i915/gt/selftest_migrate.c | 671 +++++++++++++++++ drivers/gpu/drm/i915/i915_gem.c | 52 -- drivers/gpu/drm/i915/i915_gem.h | 12 - drivers/gpu/drm/i915/i915_gem_ww.c | 63 ++ drivers/gpu/drm/i915/i915_gem_ww.h | 50 ++ .../drm/i915/selftests/i915_live_selftests.h | 1 + .../drm/i915/selftests/i915_perf_selftests.h | 1 + 21 files changed, 1669 insertions(+), 73 deletions(-) create mode 100644 drivers/gpu/drm/i915/gt/intel_migrate.c create mode 100644 drivers/gpu/drm/i915/gt/intel_migrate.h create mode 100644 drivers/gpu/drm/i915/gt/intel_migrate_types.h create mode 100644 drivers/gpu/drm/i915/gt/selftest_migrate.c create mode 100644 drivers/gpu/drm/i915/i915_gem_ww.c create mode 100644 drivers/gpu/drm/i915/i915_gem_ww.h