So a global per-engine execution queue is planned to go the way of the dodo. One consequence for this is that HW semaphores will no longer be viable for gen7. However, this is a mixed blessing as it gives us a strong impetus to remove them and take another step towards implementing request reordering. (Now we just need move our ring into per-context batch buffer and use it as a trampoline for each request. Almost there.) Using a roundtrip via the cpu is much slower than using the gpu to kick the other engine, so by means of compensation optimise the interrupt handling latency and improve request generation. Scratch the improve interrupt latency since that broke display interrupts in the process. Sigh it was a 50% improvement in latency for GEM. :( -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
