On Tue, 2011-11-08 at 11:22 +0100, Ingo Molnar wrote: > > We do even more than that, the perf ABI is fully backwards *and* > forwards compatible: you can run older perf on newer ABIs and newer > perf on older ABIs.
The ABI yes, the tool no, the tool very much relies on some newer ABI parts. Supporting fallbacks isn't always possible/wanted.
