On Sun, Jul 09, 2006 at 10:43:32AM +0200, Arjan van de Ven wrote: > On Sat, 2006-07-08 at 16:38 -0400, Dave Jones wrote: > > On Sat, Jul 08, 2006 at 10:27:55PM +0200, Andreas Thienemann wrote: > > > > > Several legacy i586 systems are used as routers and I'd hate to leave them > > > on FC5. > > > > The buildsys was tweaked a few days ago, and 586 kernels have been popping out > > since then. test2 should be fine. > > now to go a step further; cmov isn't actually a performance gain on any > cpu sold in the last year or two. Why ship the i686 kernel at all over > an i586 kernel? Why not ship ONLY a i586 kernel? This has crossed my mind, and I did some investigation on this a month or two ago. You'd still want gcc to schedule instructions optimally for newer cpus (-mtune-generic seems to handle this), but iirc adding -march=i586 somehow affects the behaviour of -mtune in a negative way. It does warrant further investigation at some stage however. Dave -- http://www.codemonkey.org.uk -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
