On Thursday, August 18, 2011 1:49:18 pm Christoph Hoffmann wrote: > John, > > Unfortunately not, as we is still need 4 additional instructions or some sort of memory > barrier [ like mb() in Tru64 :) ] .
Well, x86 CPUs generally don't need memory barriers assuming the compiler hasn't done something invalid, especially for opertions that are only on a single CPU. However, if the compiler was broken presumably zfsboot would be broken everywhere. -- John Baldwin _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"