The feature you're talking about, DDIO, is worse than useless for our application. It wastes cache ways on I/O that has long, long, long since been evicted fr

The feature you're talking about, DDIO, is worse than useless for our application. It wastes cache ways on I/O that has long, long, long since been evicted from the cache by the time we go to look at it. It might be helpful for a low-latency polling sort of scenario, but with interrupt coalescing all it does is waste cache.