Re: [PATCH drm-misc-next v3 4/7] drm/gpuvm: common dma-resv per struct drm_gpuvm

Danilo Krummrich
2023-09-11T21:56:38Z

On Mon, Sep 11, 2023 at 02:00:35PM +0200, Boris Brezillon wrote:
> On Sat, 9 Sep 2023 17:31:11 +0200
> Danilo Krummrich <dakr@redhat.com> wrote:
>
> > @@ -240,9 +240,22 @@ struct drm_gpuvm {
> > * @ops: &drm_gpuvm_ops providing the split/merge steps to drivers
> > */
> > const struct drm_gpuvm_ops *ops;
> > +
> > + /**
> > + * @d_obj: Dummy GEM object; used internally to pass the GPU VMs
> > + * dma-resv to &drm_exec.
> > + */
> > + struct drm_gem_object d_obj;
> > +
> > + /**
> > + * @resv: the &dma_resv for &drm_gem_objects mapped in this GPU VA
> > + * space
> > + */
> > + struct dma_resv *resv;
>
> Hm, I'd be tempted to drop this field and add a drm_gpuvm_resv() helper
> returning vm->d_obj.resv;

Makes sense, will do that for V4.

>
> > };
>