Version 3 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, 2 and for helping to address many design issues. This version has been tested with IGT [1] on PVC, BMG, and LNL. Also tested with level0 (UMD) PR [2]. 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 Major changes in v3: - Move GPU SVM and DRM pagemap to DRM level - Mostly addresses Thomas's feedback, lots of small changes documented in each individual patch change log Known issues in v3: - Check pages still exists, changed to threshold in this version which is better but still need to root cause cross process page finding on small user allocations. - Dropped documentation patch, fairly large rewrite and will send out independently once finished. Matt [1] https://patchwork.freedesktop.org/series/137545/#rev3 [2] https://github.com/intel/compute-runtime/pull/782 Matthew Brost (27): drm/xe: Retry BO allocation mm/migrate: Add migrate_device_pfns mm/migrate: Trylock device page in do_swap_page drm/gpusvm: Add support for GPU Shared Virtual Memory drm/xe: Select DRM_GPUSVM Kconfig drm/xe/uapi: Add DRM_XE_VM_BIND_FLAG_CPU_ADDR_MIRROR flag drm/xe: Add SVM init / close / fini to faulting VMs drm/xe: Nuke VM's mapping upon close drm/xe: Add SVM range invalidation and page fault handler drm/gpuvm: Add DRM_GPUVA_OP_DRIVER 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 CPU address mirror VMA unbind if the GPU has bindings drm/xe: Enable CPU address mirror 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 device memory copy vfunc functions drm/xe: Add Xe SVM populate_devmem_pfn GPU SVM vfunc drm/xe: Add Xe SVM devmem_release GPU SVM 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 Thomas Hellström (3): drm/pagemap: Add DRM pagemap drm/xe: Add dma_addr res cursor drm/xe: Add drm_pagemap ops to SVM drivers/gpu/drm/Kconfig | 8 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/drm_gpusvm.c | 2220 +++++++++++++++++++ drivers/gpu/drm/xe/Kconfig | 10 + drivers/gpu/drm/xe/Makefile | 1 + drivers/gpu/drm/xe/xe_bo.c | 20 +- drivers/gpu/drm/xe/xe_bo.h | 1 + drivers/gpu/drm/xe/xe_bo_types.h | 4 + drivers/gpu/drm/xe/xe_device_types.h | 15 + drivers/gpu/drm/xe/xe_gt_pagefault.c | 17 +- drivers/gpu/drm/xe/xe_gt_tlb_invalidation.c | 24 + drivers/gpu/drm/xe/xe_gt_tlb_invalidation.h | 2 + drivers/gpu/drm/xe/xe_migrate.c | 175 ++ 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 | 393 +++- drivers/gpu/drm/xe/xe_pt.h | 5 + 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 | 948 ++++++++ drivers/gpu/drm/xe/xe_svm.h | 83 + drivers/gpu/drm/xe/xe_tile.c | 5 + drivers/gpu/drm/xe/xe_vm.c | 375 +++- drivers/gpu/drm/xe/xe_vm.h | 15 +- drivers/gpu/drm/xe/xe_vm_types.h | 57 + include/drm/drm_gpusvm.h | 445 ++++ include/drm/drm_gpuvm.h | 5 + include/drm/drm_pagemap.h | 103 + include/linux/migrate.h | 1 + include/uapi/drm/xe_drm.h | 19 +- mm/memory.c | 13 +- mm/migrate_device.c | 116 +- 33 files changed, 5061 insertions(+), 157 deletions(-) create mode 100644 drivers/gpu/drm/drm_gpusvm.c create mode 100644 drivers/gpu/drm/xe/xe_svm.c create mode 100644 drivers/gpu/drm/xe/xe_svm.h create mode 100644 include/drm/drm_gpusvm.h create mode 100644 include/drm/drm_pagemap.h -- 2.34.1
