[Linaro-mm-sig] Re: [PATCH v2 0/6] dma-buf: heaps: add coherent reserved-memory heap

On Tue, Mar 3, 2026 at 4:34 AM Albert Esteve aesteve@redhat.com wrote:

This patch introduces a new heap driver to expose DT non‑reusable "shared-dma-pool" coherent regions as dma-buf heaps, so userspace can allocate buffers from each reserved, named region.

Just a nit here: Might be good to provide some higher level context as to why this is wanted, and what it enables.

Also, "shared-dma-pool" is also used for CMA regions, so it might be unclear initially how this is different from the CMA heap (you do mention non-reusable, but that's a prettty subtle detail).

Might be good to add some of the rationale to the patch adding the heap implementation as well so it makes it into the git history.

thanks -john