drm/amdkfd: Use partial migrations/mapping for GPU/CPU page faults in SVM

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This patch implements partial migration/mapping for gpu/cpu page faults in SVM
according to migration granularity(default 2MB). A svm range may include pages
from both system ram and vram of one gpu now. These chagnes are expected to
improve migration performance and reduce mmu callback and TLB flush workloads.

Signed-off-by: Xiaogang Chen <xiaogang.chen@amd.com>
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Xiaogang Chen 2023-12-01 23:38:12 -06:00 • committed by Alex Deucher

parent fa745b5547

commit a546a27684

4 changed files with 176 additions and 159 deletions

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146

drivers/gpu/drm/amd/amdkfd/kfd_migrate.c

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4

drivers/gpu/drm/amd/amdkfd/kfd_migrate.h

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176

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

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9

drivers/gpu/drm/amd/amdkfd/kfd_svm.h

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