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(parent: 62cc895) | patch
drm/amdkfd: fix restore worker race condition
authorPhilip Yang <Philip.Yang@amd.com>
Thu, 21 May 2020 13:56:58 +0000 (09:56 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Thu, 21 May 2020 21:59:45 +0000 (17:59 -0400)
commitf7646585a30ed8ef5ab300d4dc3b0c1d6afbe71d
treeec7757b26303e5ae277cd427bacc934d7df8a3fctree | snapshot
parent62cc895c02fb9d1170f02dc1dfa3c2135ebe100bcommit | diff
drm/amdkfd: fix restore worker race condition

In free memory of gpu path, remove bo from validate_list to make sure
restore worker don't access the BO any more, then unregister bo MMU
interval notifier. Otherwise, the restore worker will crash in the
middle of validating BO user pages if MMU interval notifer is gone.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c diff | blob | history
Domain: System / Kernel;