On Fri, 22 Jan 2021 16:18:04 +0000 Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > On Fri, Jan 22, 2021 at 03:58:01PM +0200, Lauri Kasanen wrote: > > On Fri, 22 Jan 2021 11:17:27 +0000 > > Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > > > > > Sorry for not noticing this earlier, but why do you need the bounce > > > buffer vs just mapping the data buffer? > > > > I think I've answered this once already a few iterations before. DMA > > alignment restrictions, not sure what guarantees the bio buffer has. > > Your driver can communicate the required alignment using the > blk_queue_update_dma_alignment API. Is it guaranteed to be physically contiguous? - Lauri
