drm/amdkfd: invalidate tables on page retry fault

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GPU page tables are invalidated by unmapping prange directly at
the mmu notifier, when page fault retry is enabled through
amdgpu_noretry global parameter. The restore page table is
performed at the page fault handler.

If xnack is on, we update GPU mappings after migration to avoid
unnecessary GPUVM faults.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Felix Kuehling 2021-02-24 22:34:11 -05:00 • committed by Alex Deucher

parent 48ff079b28

commit 90d7d3eda5

3 changed files with 70 additions and 17 deletions

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6

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

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77

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

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4

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

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