On Fri, 2017-06-16 at 12:15 -0700, Ram Pai wrote: > gp_regs size is not changed, nor is the layout. A unused field in > the gp_regs is used to fill in the AMR contents. Old binaries will not > be knowing about this unused field, and hence should not break. > > New binaries can leverage this already existing but newly defined > field; to read the contents of AMR. > > Is it still a concern?
Calls to sys_swapcontext with a made-up context will end up with a crap AMR if done by code who didn't know about that register. Ben.