Messages in this thread | | | Date | Thu, 8 Feb 2018 19:03:57 +0100 | From | Peter Zijlstra <> | Subject | Re: [linus:master] BUILD REGRESSION a2e5790d841658485d642196dbb0927303d6c22f |
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On Thu, Feb 08, 2018 at 09:27:56AM -0800, Linus Torvalds wrote: > On Thu, Feb 8, 2018 at 1:13 AM, Peter Zijlstra <peterz@infradead.org> wrote: > > > > _The_ problem is that new binutils cannot sanely decode any function > > that has a WARN in (this very much includes perf annotate): > > Ugh. > > Is there any reason why we don't just use UD2 and avoid this whole issue?
That's what I initially had, but then Arjan told me that a number of emulators fatally terminate on UD2 since they assume it to be BUG. Which is when we all went looking at UD1/UD0.
But yes, for our purposes UD2 is perfectly fine too, it will just mess up the people doing bringup and the like.
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