6.11-stable review patch. If anyone has any objections, please let me know.
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From: Lang Yu lang.yu@amd.com
commit d7d7b947a4fa6d0a82ff2bf0db413edc63738e3a upstream.
Only creating a new reference for each process instead of each VM.
Fixes: 9a1c1339abf9 ("drm/amdkfd: Run restore_workers on freezable WQs") Suggested-by: Felix Kuehling felix.kuehling@amd.com Signed-off-by: Lang Yu lang.yu@amd.com Reviewed-by: Felix Kuehling felix.kuehling@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com (cherry picked from commit 5fa436289483ae56427b0896c31f72361223c758) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 4 ++-- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 7 +++++-- 2 files changed, 7 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -1438,8 +1438,8 @@ static int init_kfd_vm(struct amdgpu_vm list_add_tail(&vm->vm_list_node, &(vm->process_info->vm_list_head)); vm->process_info->n_vms++; - - *ef = dma_fence_get(&vm->process_info->eviction_fence->base); + if (ef) + *ef = dma_fence_get(&vm->process_info->eviction_fence->base); mutex_unlock(&vm->process_info->lock);
return 0; --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -1676,12 +1676,15 @@ int kfd_process_device_init_vm(struct kf
ret = amdgpu_amdkfd_gpuvm_acquire_process_vm(dev->adev, avm, &p->kgd_process_info, - &ef); + p->ef ? NULL : &ef); if (ret) { dev_err(dev->adev->dev, "Failed to create process VM object\n"); return ret; } - RCU_INIT_POINTER(p->ef, ef); + + if (!p->ef) + RCU_INIT_POINTER(p->ef, ef); + pdd->drm_priv = drm_file->private_data;
ret = kfd_process_device_reserve_ib_mem(pdd);