The following patchset allows additional "attributes" to be passed to dma_map_*/dma_unmap_* implementations. (The reason why this is useful/necessary has been mentioned several times, most recently here: http://marc.info/?l=linux-kernel&m=119258541412724&w=2.)
This is incomplete in that only ia64 and x86_64 are supported - the purpose is mainly to give us something specific to discuss. The approach here is to change the dma_map_* interface so that the last argument is an u32 which encodes the direction of the dma and, optionally, other attributes. Changing the interface is a bit intrusive, but callers of dma_map_* don't need to be modified. There are 3 patches: [1/3] dma: create linux/dma-direction.h [2/3] dma: ia64/sn2 allow "attributes" to be used by dma_map_* [2/3] dma: x86_64 allow "attributes" to be used by dma_map_* -- Arthur -- 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/
