[PATCH v4 0/9] Fix non-contiguous VRAM BO access in Xe

[Matthew Brost]

Mapping a non-contiguous VRAM BO doesn't work, start to fix this.

v2:
 - Include missing local change
v3:
 - Use GPU for non-visible access
 - Take PM ref in xe_ttm_access_memory
 - Disable VMAP for non-contiguous BOs
v4:
 - Fix less than page sized non-visible access
 - Add PM ref to xe_ttm_access_memory
 - Add PM ref to delayed snapshot capture worker
 - Fix a couple of warnings in xe_res_cursor
 - Test all possible code paths

Matthew Brost (9):
  drm/xe: Add xe_bo_vm_access
  drm/ttm: Add ttm_bo_access
  drm/xe: Add xe_ttm_access_memory
  drm/xe: Take PM ref in delayed snapshot capture worker
  drm/xe: Update xe_ttm_access_memory to use GPU for non-visible access
  drm/xe/display: Update intel_bo_read_from_page to use ttm_bo_access
  drm/xe: Use ttm_bo_access in xe_vm_snapshot_capture_delayed
  drm/xe: Set XE_BO_FLAG_PINNED in migrate selftest BOs
  drm/xe: Only allow contiguous BOs to use xe_bo_vmap

 drivers/gpu/drm/ttm/ttm_bo_util.c     |  86 +++++++
 drivers/gpu/drm/ttm/ttm_bo_vm.c       |  65 +-----
 drivers/gpu/drm/xe/display/intel_bo.c |  25 +-
 drivers/gpu/drm/xe/tests/xe_migrate.c |  13 +-
 drivers/gpu/drm/xe/xe_bo.c            | 106 +++++++--
 drivers/gpu/drm/xe/xe_devcoredump.c   |   6 +
 drivers/gpu/drm/xe/xe_migrate.c       | 325 ++++++++++++++++++++++++++
 drivers/gpu/drm/xe/xe_migrate.h       |   4 +
 drivers/gpu/drm/xe/xe_vm.c            |  17 +-
 include/drm/ttm/ttm_bo.h              |   2 +
 10 files changed, 533 insertions(+), 116 deletions(-)

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2.34.1