On Mon, 29 Jan 2007, Russell King wrote: > This sounds like it could help ARM where we have some weird DMA areas.
Some ARM platforms have no need for a ZONE_DMA. The code in mm allows you to not compile ZONE_DMA support into these kernels. > What will help even more is if the block layer can also be persuaded that > a device dma mask is precisely that - a mask - and not a set of leading > ones followed by a set of zeros, then we could eliminate the really ugly > dmabounce code. With a alloc_pages_range() one would be able to specify upper and lower boundaries. The device dma mask can be translated to a fitting boundary. Maybe we can then also get rid of the device mask and specify a boundary there. There is a lot of ugly code all around that circumvents the existing issues with dma masks. That would all go away. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
