On Mon, Apr 10, 2023 at 01:14:13PM +0800, Jason Wang wrote: > > But rethink, this is unreliable. Some platforms have returned their own ops, > > including X86. > > > > Because the priority of dev->dma_ops is higher than get_arch_dma_ops(), we > > should not let dev->dma_ops be null. We should define a set of dma_ops to > > actively implement direct dMA. > > Then this will duplicate with existing DMA API helpers. Could we tweak > the sparc or introduce a new flag for the device structure then the > DMA API knows it needs to use direct mapping? > > Adding Christoph for more comments.
Code outside of the core kernel/dma/ code has no business doing anything with the dma_ops. WTF is going on? _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
