[PATCH v9 00/20] MADVISE FOR XE

[Himal Prasad Ghimiray]

Provides a user API to assign attributes like pat_index, atomic
operation type, and preferred location for SVM ranges.
The Kernel Mode Driver (KMD) may split existing VMAs to cover input
ranges, assign user-provided attributes, and invalidate existing PTEs so
that the next page fault/prefetch can use the new attributes.

Tested-with: https://github.com/intel/compute-runtime/pull/845

-v10
Xe specific patches only

-v9
Nits

-v8
Define new function in gpuvm for madvise
Fix tile check in ops_create

-v7
Change gpuvm layering on gpuvm_map_req struct
Fix EAGAIN return on garbage collector splitting vma

-v6
Rebase on gpuvm patches
Address review comments

-v5
Restore attributes to default after free from userspace
Add defragment worker to merge cpu mirror vma with default attributes
Avoid using VMA in uapi
address review comments

-v4:
fix atomic policies
fix attribute copy
address review comments

Himal Prasad Ghimiray (20):
  drm/xe/uapi: Add madvise interface
  drm/xe/vm: Add attributes struct as member of vma
  drm/xe/vma: Move pat_index to vma attributes
  drm/xe/vma: Modify new_vma to accept struct xe_vma_mem_attr as
    parameter
  drm/xe/svm: Split system allocator vma incase of madvise call
  drm/xe: Allow CPU address mirror VMA unbind with gpu bindings for
    madvise
  drm/xe/svm: Add xe_svm_ranges_zap_ptes_in_range() for PTE zapping
  drm/xe: Implement madvise ioctl for xe
  drm/xe/svm: Add svm ranges migration policy on atomic access
  drm/xe/madvise: Update migration policy based on preferred location
  drm/xe/svm: Support DRM_XE_SVM_MEM_RANGE_ATTR_PAT memory attribute
  drm/xe/uapi: Add flag for consulting madvise hints on svm prefetch
  drm/xe/svm: Consult madvise preferred location in prefetch
  drm/xe/bo: Add attributes field to xe_bo
  drm/xe/bo: Update atomic_access attribute on madvise
  drm/xe/madvise: Skip vma invalidation if mem attr are unchanged
  drm/xe/vm: Add helper to check for default VMA memory attributes
  drm/xe: Reset VMA attributes to default in SVM garbage collector
  drm/xe: Enable madvise ioctl for xe
  drm/xe/uapi: Add UAPI for querying VMA count and memory attributes

 drivers/gpu/drm/xe/Makefile          |   1 +
 drivers/gpu/drm/xe/xe_bo.c           |  29 +-
 drivers/gpu/drm/xe/xe_bo_types.h     |   8 +
 drivers/gpu/drm/xe/xe_device.c       |   4 +
 drivers/gpu/drm/xe/xe_gt_pagefault.c |  35 +--
 drivers/gpu/drm/xe/xe_pt.c           |  39 ++-
 drivers/gpu/drm/xe/xe_svm.c          | 254 +++++++++++++--
 drivers/gpu/drm/xe/xe_svm.h          |  23 ++
 drivers/gpu/drm/xe/xe_vm.c           | 425 +++++++++++++++++++++++--
 drivers/gpu/drm/xe/xe_vm.h           |  10 +-
 drivers/gpu/drm/xe/xe_vm_madvise.c   | 445 +++++++++++++++++++++++++++
 drivers/gpu/drm/xe/xe_vm_madvise.h   |  15 +
 drivers/gpu/drm/xe/xe_vm_types.h     |  57 +++-
 include/uapi/drm/xe_drm.h            | 275 +++++++++++++++++
 14 files changed, 1530 insertions(+), 90 deletions(-)
 create mode 100644 drivers/gpu/drm/xe/xe_vm_madvise.c
 create mode 100644 drivers/gpu/drm/xe/xe_vm_madvise.h

-- 
2.34.1