On Tue, Jun 20, 2017 at 02:50:34PM +0100, Robin Murphy wrote: > On 20/06/17 14:42, Christoph Hellwig wrote: > > Wouldn't the smal patch below solve the same issue in a simple way? > > That assumes that all devices accessing a shared pool will have the same > dma_pfn_offset as the first one, which cannot strictly be relied upon > (even if it is highly likely in practice).
Which seems like another argument why the global pool should be a different implementation / interface than the per-device dma mapping helpers..
