Re: [PATCH v2] scsi: libsas: Allocation SMP request is aligned to ARCH_DMA_MINALIGN

[Christoph Hellwig]

On Thu, Mar 28, 2024 at 04:23:22PM +0900, Damien Le Moal wrote:
> But I thought that the original issue was that some arch have ARCH_DMA_MINALIGN
> down to 8B but hisi driver needs at least 16 ?
> 
> So in the end, you need something like:
> 
> 	size = ALIGN(size, max(16, ARCH_DMA_MINALIGN));
> 
> no ?

I don't think we ever have an 8 byte dma minalign.  With 8-byte
aligned addresses dma_mapping_error could run into problems.