amdgpu_vm_generation
ctx->generation = amdgpu_vm_generation(mgr->adev, &fpriv->vm);
if (ctx->generation != amdgpu_vm_generation(adev, &fpriv->vm))
(*job)->generation = amdgpu_vm_generation(adev, vm);
if (job->generation != amdgpu_vm_generation(adev, job->vm) ||
vm->generation = amdgpu_vm_generation(adev, NULL);
uint64_t new_vm_generation = amdgpu_vm_generation(adev, vm);
uint64_t amdgpu_vm_generation(struct amdgpu_device *adev, struct amdgpu_vm *vm);