On Fri, Apr 17, 2015 at 03:38:58PM +0200, Paolo Bonzini wrote: > > The path this notifier is called from has nothing to do with those > > costs. > > How not? The task is going to incur those costs, it's not like half > a dozen extra instruction make any difference. But anyway...
Its attributed to the entity doing the migration, which can be the wakeup path or a softirq. And we very much do care about the wakeup path. > ... that's a valid objection. Please look at the patch below. Still a NAK on that, distros have no choice but to enable that CONFIG option because people might want to run KVM. CONFIG options are pointless if they end up being mandatory. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
