Re: [PATCH V3 2/3] mm: dmapool: Align to ARCH_DMA_MINALIGN in non-coherent DMA mode
From: Andrew Morton
Date: Wed Sep 13 2017 - 17:52:58 EST
On Wed, 13 Sep 2017 17:20:51 +0800 Huacai Chen <chenhc@xxxxxxxxxx> wrote:
> In non-coherent DMA mode, kernel uses cache flushing operations to
> maintain I/O coherency, so the dmapool objects should be aligned to
> ARCH_DMA_MINALIGN.
What are the user-visible effects of this bug?