On Fri, 2015-04-03 at 09:01 +1100, Benjamin Herrenschmidt wrote: > On Fri, 2015-04-03 at 08:57 +1100, Benjamin Herrenschmidt wrote: > > > No, the last argument to iommu_area_alloc() which is passed from the > > callers when doing consistent allocs. Basically, the DMA api mandates > > that consistent allocs are naturally aligned (to their own size), we > > implement that on powerpc by passing that alignment argument down. > > Talking of this ... I notice this is not documented in DMA-API.txt... > however many drivers make that assumption, and the DMA pool allocator > in mm/dmapool.c as well. > > Maybe somebody should update DMA-API.txt...
Ah it *is* documented in DMA-API-HOWTO.txt :-) Cheers, Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
