On 31.03.2026 12:00, Maxime Ripard wrote:
The recent introduction of heaps in the optee driver [1] made possible the creation of heaps as modules.
It's generally a good idea if possible, including for the already existing system and CMA heaps.
The system one is pretty trivial, the CMA one is a bit more involved, especially since we have a call from kernel/dma/contiguous.c to the CMA heap code. This was solved by turning the logic around and making the CMA heap call into the contiguous DMA code.
Let me know what you think, Maxime
1: https://lore.kernel.org/dri-devel/20250911135007.1275833-4-jens.wiklander@li...
Signed-off-by: Maxime Ripard mripard@kernel.org
Applied again patches 1-5 to my dma-mapping-for-next branch. I hope this time it
won't cause new problems in linux-next.
Here is a stable branch to apply remaining dma-buf heaps patches:
https://web.git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux.git/lo...
Best regards