Re: [PATCH v8 00/23] dma-mapping: Track shared DMA state through direct, pool and swiotlb paths
From: Jason Gunthorpe
Date: Wed Jul 22 2026 - 16:00:42 EST
On Tue, Jul 21, 2026 at 03:40:56PM +0300, Leon Romanovsky wrote:
> Why don't we continue the effort to remove "struct page" entirely
> from the DMA API internals?
>
> IMHO, everything not exposed to DMA API users should use
> phys_addr_t, including the DMA address pool.
The alloc interfaces return a struct page, that is why this stuff is
organized like this. Look at dma_alloc_pages()
There is also an API that forms a scatterlist that has to be struct
page as well
Jason