On Thu, May 17, 2012 at 8:39 PM, H.J. Lu <hjl.tools@xxxxxxxxx> wrote: > > That will be wrong. __BITS_PER_LONG defines # bits of long > as seen by kernel. We don't use it in user space. Yes you do. Exactly in that structure that Peter points to. *Exactly* because that structure uses "long" instead of some fixed size. Which will be different in user mode than in kernel mode. And if user mode doesn't use these headers at all, then we should stop playing the insane games. 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