On 07/23/2014 09:58 AM, Peter Zijlstra wrote: > On Wed, Jul 23, 2014 at 09:07:32AM +0300, Adrian Hunter wrote: >> On 07/22/2014 05:11 PM, Peter Zijlstra wrote: >>> On Tue, Jul 22, 2014 at 11:00:34AM -0300, Arnaldo Carvalho de Melo wrote: >>>> Em Tue, Jul 22, 2014 at 04:17:10PM +0300, Adrian Hunter escreveu: >>>>> Intel PT decoding walks the object code to reconstruct >>>>> the trace. A jump label change during tracing causes >>>>> decoding errors. >>> >>> You'd better fix that, jump_labels can change any time and they're all >>> over the frigging place. >>> >> >> Perhaps a general method is needed to be able to deal with kernel >> self-modifying code. > > I know people are looking at doing the same to userspace, is that also a > problem?
Yes, most significantly JIT-compiled code. -- 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/
