On Wed, May 15, 2019 at 09:57:12AM +0000, Laurentiu Tudor wrote: > Glad I could help. On the remoteproc_virtio.c case, I had a cursory look > and found out that the dma_declare_coherent_memory() usage was > introduced quite recently, by this patch: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086d08725d34c6b3333db710344ae9c4fdafb2d5 Yes. I took a look at it to, and while it isn't exactly a clean usage of the API it at least declares system memory and not a resource. So it doesn't really affect our plan.