drm/amdkfd: Use partial migrations in GPU page faults

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This patch implements partial migration in gpu page fault according to migration
granularity(default 2MB) and not split svm range in cpu page fault handling.
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: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Xiaogang Chen 2023-10-04 16:20:58 -05:00 • committed by Alex Deucher

parent de5e73dc6b

commit dc427a473e

4 changed files with 160 additions and 85 deletions

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150

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

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6

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

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83

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

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6

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

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