Re: [PATCH v3 3/6] rust: gpuvm: add GpuVm::obtain()

From: Alice Ryhl

Date: Mon Jan 26 2026 - 10:07:54 EST


On Mon, Jan 26, 2026 at 4:00 PM Boris Brezillon
<boris.brezillon@xxxxxxxxxxxxx> wrote:
>
> On Wed, 21 Jan 2026 11:31:19 +0000
> Alice Ryhl <aliceryhl@xxxxxxxxxx> wrote:
>
> > +/// A [`GpuVmBo`] object in the GEM list.
> > +///
> > +/// # Invariants
> > +///
> > +/// Points at a `drm_gpuvm_bo` that contains a valid `T::VmBoData` and is present in the gem list.
> > +pub struct GpuVmBoResident<T: DriverGpuVm>(NonNull<GpuVmBo<T>>);
>
> I find the name a bit confusing: BO residency is often used to refer to
> memory backing the buffer object, and in this case, you can end up with
> a GpuVmBoResident being returned for a BO that has been evicted (one
> that's no longer resident).

Good point. I meant it as "present in list" but I guess there are
other things a gpuvm may be present in.

Any naming suggestions?

Alice