> On Thu, 2007-08-02 at 18:56 +1000, Michael Neuling wrote: > > > > But even in the case of a checkpoint restart, the ordering will be > > > > preserved as the NIA we get as part of the checkpoint will have > > all > > > > previous instructions complete and none of the following > > instructions > > > > started. > > > > > > Instruction completion isn't enough to ensure storage ordering. The > > > stores may well be complete but the data still in separate store > > queues. > > > > POWER6 flushes the store queues when we take a checkpoint. > > Ok, that was missing from your description :-)
Sorry... so ditch the barriers? Mikey _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
