On Tue, 27 May 2008, Benjamin Herrenschmidt wrote: > > Yes. As it is today, tg3 for example is potentially broken on all archs > with newer gcc unless we either add "memory" clobber to readl/writel or > stick some wmb's in there (just a random driver I picked). > > So Linus, what is your take on that matter ? Let's just serialize the damn things, and add a memory clobber to them. Expecting people to fix up all drivers is simply not going to happen. And serializing things shouldn't be *that* expensive. People who cannot take the expense can continue to use the magic __raw_writel() etc stuff. Linus -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
