On Fri, 8 Jul 2016 10:48:24 -0500 Josh Poimboeuf <jpoimboe@xxxxxxxxxx> wrote: > My understanding is that other arches don't need this check because they > use -mfentry, so they have to modify the "call fentry" instruction to a > nop on startup. > > Here, with -fprolog-pad, it's already a nop, so no change is needed. > That's what I was thinking. But as I stated in another email (probably in the air when you wrote this), the call to ftrace_modify_code() may be completely circumvented by ftrace_make_nop() if the addr is MCOUNT_ADDR. -- Steve -- 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
