[v3,0/4] drm/xe: More fb pinning optimizations.

Message

Maarten Lankhorst April 24, 2024, 1:02 p.m. UTC

This reduces the latency of pinning framebuffers by
re-using the previous mapping, if available.

Additionally, DPT is preallocated when creating the FB, instead
of performing a bo allocation on every pin.

Remove the safety check in the first patch again, I didn't realize it was
needed even without the initial FB GGTT pinning removal.

Maarten Lankhorst (4):
  drm/xe: Remove safety check from __xe_ttm_stolen_io_mem_reserve_stolen
  drm/xe/display: Preparations for preallocating dpt bo
  drm/xe: Use simple xchg to cache DPT
  drm/xe/display: Re-use display vmas when possible

 .../gpu/drm/i915/display/intel_atomic_plane.c |   2 +-
 drivers/gpu/drm/i915/display/intel_cursor.c   |   2 +-
 drivers/gpu/drm/i915/display/intel_fb_pin.c   |   3 +-
 drivers/gpu/drm/i915/display/intel_fb_pin.h   |   3 +-
 drivers/gpu/drm/i915/display/intel_fbdev.c    |   5 +
 drivers/gpu/drm/i915/display/intel_fbdev.h    |   9 +
 .../gpu/drm/xe/compat-i915-headers/i915_vma.h |   3 +
 drivers/gpu/drm/xe/display/xe_fb_pin.c        | 220 ++++++++++++++----
 drivers/gpu/drm/xe/xe_ttm_stolen_mgr.c        |   4 -
 9 files changed, 198 insertions(+), 53 deletions(-)