Comment 10 for bug 883136

http://comments.gmane.org/gmane.comp.lib.glibc.ports/1325

-- Michael's version of the makecontext patches has been committed to glibc-ports and should be available in glibc 2.16.

Upstream qemu (and thus qemu-linaro) now have a version of the configure check which tests for __stub_makecontext, so qemu will just automatically pick up the makecontext implementation when compiled against a glibc which supports it. So I think the only remaining thing is to decide whether Linaro and/or Ubuntu want to backport this.