Ok, it looks like adding the dma_get_cache_alignment constraint here looks good - but again it should be unconditional.
- [PATCH V5 2/3] mm: dmapool: Align to ARCH_DMA_MINALIGN i... Huacai Chen
- Re: [PATCH V5 2/3] mm: dmapool: Align to ARCH_DMA_M... Christoph Hellwig
- Re: [V5, 2/3] mm: dmapool: Align to ARCH_DMA_MINALI... Robin Murphy
- Re: [PATCH V5 2/3] mm: dmapool: Align to ARCH_DMA_M... Christoph Hellwig

