[PATCH 0/8] ttm for stolen

[Robert Beckett]

This series refactors i915's stolen memory region to use ttm.

v2:	handle disabled stolen similar to legacy version.
	relying on ttm to fail allocs works fine, but is dmesg noisy and causes testing
	dmesg warning regressions.

v3:	rebase to latest drm-tip.
	fix v2 code refactor which could leave a buffer pinned.
	locally passes fftl again now.

v4:	- Allow memory regions creators to do allocation. Allows stolen region to track
	  it's own reservations.
	- Pre-reserve first page of stolen mem (add back WaSkipStolenMemoryFirstPage:bdw+)
	- Improve commit descritpion for "drm/i915: sanitize mem_flags for stolen buffers"
	- replace i915_gem_object_pin_pages_unlocked() call with manual locking and pinning.
	  this avoids ww ctx class reuse during context creation -> ring vma obj alloc.

v5:	- detect both types of stolen as stolen buffers in
	  "drm/i915: sanitize mem_flags for stolen buffers"
	- in stolen_object_init limit page size to mem region minimum.
	  The range allocator expects the page_size to define the
	  alignment

Robert Beckett (8):
  drm/i915: instantiate ttm ranger manager for stolen memory
  drm/i915: sanitize mem_flags for stolen buffers
  drm/i915: ttm move/clear logic fix
  drm/i915: ttm backend dont provide mmap_offset for kernel buffers
  drm/i915: allow memory region creators to alloc and free the region
  drm/i915: stolen memory use ttm backend
  [TEST] fix lockdep possible circular locking issue
  [TEST] use ttm pin for stolen object lifetime

 drivers/gpu/drm/i915/display/intel_fbc.c      |  78 ++--
 .../gpu/drm/i915/gem/i915_gem_object_types.h  |   2 -
 drivers/gpu/drm/i915/gem/i915_gem_stolen.c    | 440 +++++++-----------
 drivers/gpu/drm/i915/gem/i915_gem_stolen.h    |  21 +-
 drivers/gpu/drm/i915/gem/i915_gem_ttm.c       |  44 +-
 drivers/gpu/drm/i915/gem/i915_gem_ttm.h       |   7 +
 drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c  |  34 +-
 drivers/gpu/drm/i915/gt/intel_rc6.c           |   4 +-
 drivers/gpu/drm/i915/gt/selftest_reset.c      |  16 +-
 drivers/gpu/drm/i915/i915_debugfs.c           |   7 +-
 drivers/gpu/drm/i915/i915_drv.h               |   5 -
 drivers/gpu/drm/i915/intel_memory_region.c    |  16 +-
 drivers/gpu/drm/i915/intel_memory_region.h    |   2 +
 drivers/gpu/drm/i915/intel_region_ttm.c       |  67 ++-
 drivers/gpu/drm/i915/intel_region_ttm.h       |   8 +-
 drivers/gpu/drm/i915/selftests/mock_region.c  |   3 +-
 16 files changed, 391 insertions(+), 363 deletions(-)

-- 
2.25.1