* Yu-cheng Yu: >> I assumed that it would also parse the main executable and make >> adjustments based on that. > > Yes, Linux also looks at the main executable's header, but not its > NT_GNU_PROPERTY_TYPE_0 if there is a loader. > >> >> ld.so can certainly provide whatever the kernel needs. We need to tweak >> the existing loader anyway. >> >> No valid statically-linked binaries exist today, so this is not a >> consideration at this point. > > So from kernel, we look at only PT_GNU_PROPERTY? If you don't parse notes/segments in the executable for CET, then yes. We can put PT_GNU_PROPERTY into the loader. Thanks, Florian