On Mon, 1 Dec 2014 11:26:58 +0200 "Michael S. Tsirkin" <mst@xxxxxxxxxx> wrote: > For some places on data path, it might be worth it > to cache the correct value e.g. as part of device > structure. This replaces a branch with a memory load, > so the gain would have to be measured, best done > separately? I think we'll want to do some measuring once the basic structure is in place anyway. We should make sure that e.g. s390 only takes minor hit due to all that swapping that is needed for standard-compliant devices. Caching the value might certainly help in some paths. -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
