On Wed, Jun 13, 2018 at 11:11:01PM +1000, Benjamin Herrenschmidt wrote: > Actually ... the stuff in lib/dma-direct.c seems to be just it, no ? > > There's no cache flushing and there's no architecture hooks that I can > see other than the AMD security stuff which is probably fine. > > Or am I missing something ?
You are missing the __phys_to_dma arch hook that allows architectures to adjust the dma address. Various systems have offsets, or even multiple banks with different offsets there. Most of them don't use the dma-direct code yet (working on it), but there are a few examples in the tree already. _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
