Such code generally doesn't care precisely when it gets the update, just that the update is atomic, and it doesn't loop forever.
Yes, it _does_ care that it gets the update _at all_, and preferably as early as possible.
Regardless, I'm convinced we just need to do it all in assembly.
So do you want "volatile asm" or "plain asm", for atomic_read()? The asm version has two ways to go about it too... Segher - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
