From: gaba gaba@amd.com
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 --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -2737,6 +2737,9 @@ int amdgpu_amdkfd_gpuvm_restore_process_ 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) {