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drm/amdgpu: avoid restore process run into dead loop.

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commit 8a774fe912ff09e39c2d3a3589c729330113f388 upstream.

In restore process worker, pinned BO cause update PTE fail, then
the function re-schedule the restore_work. This will generate dead loop.

Signed-off-by: gaba <gaba@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
gaba 2023-03-02 19:03:56 -05:00 committed by Greg Kroah-Hartman
parent 8404d0e274
commit fe26d0fa94
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
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@ -2737,6 +2737,9 @@ int amdgpu_amdkfd_gpuvm_restore_process_bos(void *info, struct dma_fence **ef)
if (!attachment->is_mapped)
continue;
if (attachment->bo_va->base.bo->tbo.pin_count)
continue;
kfd_mem_dmaunmap_attachment(mem, attachment);
ret = update_gpuvm_pte(mem, attachment, &sync_obj);
if (ret) {