On Thu, 11 Sep 2014, Qiaowei Ren wrote: > This patch sets bound violation fields of siginfo struct in #BR > exception handler by decoding the user instruction and constructing > the faulting pointer. > > This patch does't use the generic decoder, and implements a limited > special-purpose decoder to decode MPX instructions, simply because the > generic decoder is very heavyweight not just in terms of performance > but in terms of interface -- because it has to.
And why is that an argument to add another special purpose decoder? If a bound violation happens it is completely irrelevant whether the decoder is heavyweight or not. So unless you come up with a convincing argument why the generic decoder is the wrong place, this won't happen. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/