[PATCH v5 3/3] gpu: nova-core: add task for device address type wrappers

[John Hubbard <jhubbard@nvidia.com>]

Add a todo.rst entry for creating newtype wrappers around integer types
for device addresses and sizes, with a marker trait that generic DRM
APIs can use as a bound.

Suggested-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 Documentation/gpu/nova/core/todo.rst | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Documentation/gpu/nova/core/todo.rst b/Documentation/gpu/nova/core/todo.rst
index d5130b2b08fb..c06f274ed1b4 100644
--- a/Documentation/gpu/nova/core/todo.rst
+++ b/Documentation/gpu/nova/core/todo.rst
@@ -88,6 +88,19 @@ SR-IOV [1] is work in progress.
 | Complexity: Beginner
 | Link: https://lore.kernel.org/all/20251119-rust-pci-sriov-v1-0-883a94599a97@redhat.com/ [1]
 
+Device address type wrappers
+----------------------------
+
+The ``SizeConstants`` trait provides ``SZ_*`` constants as associated constants
+on ``u32``, ``u64``, and ``usize``. Device-centric APIs such as GPU VM
+management and buddy allocators could benefit from newtype wrappers around these
+integer types to represent device addresses and sizes. A separate marker trait
+could then serve as a generic bound for those wrappers.
+
+| Complexity: Intermediate
+| Link: https://lore.kernel.org/all/DHJJJNP5T5FZ.2HWBMOEEKH9ZR@kernel.org/
+| Contact: Danilo Krummrich
+
 GPU (general)
 =============
 
-- 
2.53.0