On Wed, 2008-05-21 at 17:34 +0200, Nick Piggin wrote: > On Wed, May 21, 2008 at 11:26:32AM -0400, Benjamin Herrenschmidt wrote: > > > > On Wed, 2008-05-21 at 16:12 +0200, Nick Piggin wrote: > > > lwsync is the recommended method of store/store ordering on caching > > > enabled > > > memory. For those subarchs which have lwsync, use it rather than eieio for > > > smp_wmb. > > > > Yuck... existence of lwsync depends on the processor at boot time... > > Not according to the __stringify(LWSYNC) that I just removed. At least, > presumably it is always present on 64 bit processors, and 32 bit ones > will be no worse off as they'll continue just using eieio.
No, it doesn't exist on power3, but it degrades into a sync Ben. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
