[RFC 00/12] Prefetch Support for svm ranges

[Himal Prasad Ghimiray]

This series builds upon the SVM work by Matt Brost and introduces the
ability to prefetch SVM ranges. The prefetch functionality utilizes the
existing ioctl vm_bind for the user interface.

Prefetching ensures that pages are populated in the requested region and
that PTEs are updated, thereby preventing GPU page faults.

Region 0: Ranges will remain in SMEM, and only PTE updates will occur.
Region 1: Ranges will migrate to VRAM, and PTEs will be updated
accordingly.

Himal Prasad Ghimiray (12):
  drm/xe: Introduce xe_vma_op_prefetch_range struct for prefetch of
    ranges
  drm/xe: Make xe_svm_alloc_vram public
  drm/xe/svm: Helper to add tile masks to svm ranges
  drm/xe/svm: Make to_xe_range a public function
  drm/xe/svm: Make xe_svm_range_* end/start/size public
  drm/xe/vm: Update xe_vma_ops_incr_pt_update_ops to take an increment
    value
  drm/xe/vm: Add an identifier in xe_vma_ops for svm prefetch
  drm/xe: Rename lookup_vma function to xe_find_vma_by_addr
  drm/xe/svm: Allow unaligned addresses and ranges for prefetch
  drm/xe/svm: Refactor usage of drm_gpusvm* function in xe_svm
  drm/xe/svm: Implement prefetch support for SVM ranges
  drm/xe/vm: Add debug prints for SVM range prefetch

 drivers/gpu/drm/xe/xe_gt_pagefault.c |  24 +--
 drivers/gpu/drm/xe/xe_pt.c           |  81 ++++++---
 drivers/gpu/drm/xe/xe_svm.c          |  99 +++++++----
 drivers/gpu/drm/xe/xe_svm.h          |  79 +++++++++
 drivers/gpu/drm/xe/xe_vm.c           | 252 ++++++++++++++++++++++++---
 drivers/gpu/drm/xe/xe_vm.h           |   2 +
 drivers/gpu/drm/xe/xe_vm_types.h     |  15 ++
 7 files changed, 451 insertions(+), 101 deletions(-)

-- 
2.34.1