On Fri 2008-04-25 08:57:20, H. Peter Anvin wrote: > Ingo Molnar wrote: >> >> text_poke() itself only applies/unapplies the LOCK prefix - a single byte. >> We shouldnt be doing that at all: the cost of LOCK is insignificant (a few >> cycles) and most systems are SMP anyway. >> > > Alas, on older CPUs the cost of LOCK can be massive. The question is how > much we really care - the embedded people (who would definitely be > affected) will simply build UP kernels, and this only affects booting SMP > kernels on UP. Like... say distros on older hardware? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
