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I'm attempting to get shared work queues (SWQs) via dma_find_channel(), which stubbornly returns NULL. After a lot of printk-ing, I finally ran across DMA_PRIVATE. I also found [1] and saw that DMA_PRIVATE is also set in the idxd driver since c06e424be5f51844 ("dmaengine: idxd: set DMA channel to be private"). It seems like this forces use of dma_request_channel(). But I believe the idea behind SWQs is that they don't have to be exclusively owned. Is there a way to use SWQs via dma_find_channel()? dma_request_channel() seems like overkill, as the point of SWQs is to not be exclusive. Also a good chance I'm missing something basic here :) Thanks! Kevin 1 - https://lore.kernel.org/dmaengine/9714cb6c-8b37-4fc6-bb09-a1fb4a5bb1b8@intel.com/#R