[PATCH v2 00/29] Introduce GPU SVM and Xe SVM implementation
Matthew Brost
matthew.brost at intel.com
Wed Oct 16 03:24:49 UTC 2024
Version 2 of GPU SVM has been promoted to the proper series from an RFC.
Thanks to everyone (especially Sima and Thomas) for their numerous
reviews on revision 1 and for helping to address many design issues.
This version has been tested with IGT [1] on PVC, BMG, and LNL.
Major changes in v2:
- Dropped mmap write abuse
- core MM locking and retry loops instead of driver locking to avoid races
- Removed physical to virtual references
- Embedded structure/ops for drm_gpusvm_devmem
- Fixed mremap and fork issues
- Added DRM pagemap
- Included RFC documentation in the kernel doc
Known issues in v2:
- gpusvm/pagemap is still located in the Xe directory; it can be moved
to the drm directory in the next revision, but will remain in Xe for
streamlined testing for now
- drm_gpusvm_range_evict looks up VMA; it may be possible to use
hmm_range_fault here instead, with some minor tweaks to HMM
Matt
[1] https://patchwork.freedesktop.org/series/137545/#rev3
Matthew Brost (26):
drm/xe: Retry BO allocation
mm/migrate: Add migrate_device_prepopulated_range
mm/migrate: Trylock device page in do_swap_page
drm/gpusvm: Add support for GPU Shared Virtual Memory
drm/xe/uapi: Add DRM_XE_VM_BIND_FLAG_SYSTEM_ALLOCATON flag
drm/xe: Add SVM init / close / fini to faulting VMs
drm/xe: Add SVM range invalidation
drm/gpuvm: Add DRM_GPUVA_OP_USER
drm/xe: Add (re)bind to SVM page fault handler
drm/xe: Add SVM garbage collector
drm/xe: Add unbind to SVM garbage collector
drm/xe: Do not allow system allocator VMA unbind if the GPU has
bindings
drm/xe: Enable system allocator uAPI
drm/xe: Add migrate layer functions for SVM support
drm/xe: Add SVM device memory mirroring
drm/xe: Add drm_gpusvm_devmem to xe_bo
drm/xe: Add GPUSVM devic memory copy vfunc functions
drm/xe: Add Xe SVM populate_devmem_pfn vfunc
drm/xe: Add Xe SVM devmem_release vfunc
drm/xe: Add BO flags required for SVM
drm/xe: Add SVM VRAM migration
drm/xe: Basic SVM BO eviction
drm/xe: Add SVM debug
drm/xe: Add modparam for SVM notifier size
drm/xe: Add always_migrate_to_vram modparam
drm/doc: gpusvm: Add GPU SVM documentation
Thomas Hellström (3):
drm/pagemap: Add DRM pagemap
drm/xe: Add dma_addr res cursor
drm/xe: Add drm_pagemap ops to SVM
Documentation/gpu/rfc/gpusvm.rst | 70 +
Documentation/gpu/rfc/index.rst | 4 +
drivers/gpu/drm/xe/Makefile | 4 +-
drivers/gpu/drm/xe/drm_gpusvm.c | 2074 ++++++++++++++++++++++++++
drivers/gpu/drm/xe/drm_gpusvm.h | 447 ++++++
drivers/gpu/drm/xe/drm_pagemap.h | 103 ++
drivers/gpu/drm/xe/xe_bo.c | 43 +-
drivers/gpu/drm/xe/xe_bo.h | 2 +
drivers/gpu/drm/xe/xe_bo_types.h | 5 +
drivers/gpu/drm/xe/xe_device_types.h | 15 +
drivers/gpu/drm/xe/xe_gt_pagefault.c | 17 +-
drivers/gpu/drm/xe/xe_migrate.c | 149 ++
drivers/gpu/drm/xe/xe_migrate.h | 10 +
drivers/gpu/drm/xe/xe_module.c | 7 +
drivers/gpu/drm/xe/xe_module.h | 2 +
drivers/gpu/drm/xe/xe_pt.c | 362 ++++-
drivers/gpu/drm/xe/xe_pt.h | 3 +
drivers/gpu/drm/xe/xe_pt_types.h | 2 +
drivers/gpu/drm/xe/xe_res_cursor.h | 116 +-
drivers/gpu/drm/xe/xe_svm.c | 840 +++++++++++
drivers/gpu/drm/xe/xe_svm.h | 60 +
drivers/gpu/drm/xe/xe_tile.c | 5 +
drivers/gpu/drm/xe/xe_vm.c | 286 +++-
drivers/gpu/drm/xe/xe_vm.h | 15 +-
drivers/gpu/drm/xe/xe_vm_types.h | 44 +
include/drm/drm_gpuvm.h | 5 +
include/linux/migrate.h | 1 +
include/uapi/drm/xe_drm.h | 19 +-
mm/memory.c | 13 +-
mm/migrate_device.c | 104 +-
30 files changed, 4695 insertions(+), 132 deletions(-)
create mode 100644 Documentation/gpu/rfc/gpusvm.rst
create mode 100644 drivers/gpu/drm/xe/drm_gpusvm.c
create mode 100644 drivers/gpu/drm/xe/drm_gpusvm.h
create mode 100644 drivers/gpu/drm/xe/drm_pagemap.h
create mode 100644 drivers/gpu/drm/xe/xe_svm.c
create mode 100644 drivers/gpu/drm/xe/xe_svm.h
--
2.34.1
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