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. Changes since v1: - Drop the patch to prevent overwriting GGTT, to see if this fixes the test results. It's not needed for optimizing FB pinning. Maarten Lankhorst (3): 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 ++++++++++++++---- 8 files changed, 198 insertions(+), 49 deletions(-) -- 2.43.0
