drm/amdkfd: retry after EBUSY is returned from hmm_ranges_get_pages

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if hmm_range_get_pages returns EBUSY error during
svm_range_validate_and_map, within the context of a page fault
interrupt. This should retry through svm_range_restore_pages
callback. Therefore we treat this as EAGAIN error instead, and defer
it to restore pages fallback.

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

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Alex Sierra 2023-08-15 15:42:52 -05:00 • committed by Alex Deucher

parent 00481158ca

commit ebac9414a5

1 changed files with 2 additions and 0 deletions

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

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