> I still don't think that's possible. Please explain how you expect > to change the semantics of the streaming mapping API to allow multiple > mappers without having explicit serialization points that are visible > to all users. For simplicity, let's assume a cache coherent system
I would agree. It's not just about barriers but in many cases where you have multiple mappings by hardware devices the actual hardware interface is specific to the devices. Just take a look at the fencing in TTM and the graphics drivers. Its not something the low level API can deal with, it requires high level knowledge. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
