On Tue, May 18, 2021 at 02:51:52PM +0800, Claire Chang wrote: > Still keep this function because directly using dev->dma_io_tlb_mem > will cause issues for memory allocation for existing devices. The pool > can't support atomic coherent allocation so we need to distinguish the > per device pool and the default pool in swiotlb_alloc. This above should really be rolled in the commit. You can prefix it by "The reason it was done this way was because directly using .."