On Thu, Jun 17, 2021 at 06:40:58PM +0900, Tomasz Figa wrote: > Sorry, I meant dma_alloc_attrs() and yes, it's indeed a misnomer. Our > use case basically has no need for the additional coherent mapping, so > creation of it can be skipped to save some vmalloc space. (Yes, it > probably only matters for 32-bit architectures.) Yes, that is the normal use case, and it is solved by using dma_alloc_noncoherent or dma_alloc_noncontigous without the vmap step.
