drm/amdkfd: Ensure mm remain valid in svm deferred_list work

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svm_deferred_list work should continue to handle deferred_range_list
which maybe split to child range to avoid child range leak, and remove
ranges mmu interval notifier to avoid mm mm_count leak. So taking mm
reference when adding range to deferred list, to ensure mm is valid in
the scheduled deferred_list_work, and drop the mm referrence after range
is handled.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reported-by: Ruili Ji <ruili.ji@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Philip Yang 2022-01-18 12:15:24 -05:00 • committed by Alex Deucher

parent ac7c48c0cc

commit 367c9b0f1b

1 changed files with 36 additions and 26 deletions

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

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