Re: [PATCH v4 0/8] dma-buf: heaps: Turn heaps into modules

Marek Szyprowski
2026-03-31T12:54:52Z

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@linaro.org/
>
> 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/log/?h=dma-contig-for-7.1-modules-prep-v4

Best regards
--
Marek Szyprowski, PhD
Samsung R&D Institute Poland