https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81708
--- Comment #7 from Andy Lutomirski <luto at kernel dot org> --- Hmm. This is a big improvement, but it's still going to be awkward to use -- if we want to use a normal Linux percpu variable, we're stuck putting it in a fixed location that's known at compile time as opposed to just at link time. It also still prevents Linux from switching to PC-relative percpu addressing to reduce text size. Can we do -mstack-protector-offset=[symbol name]? And could it be extended to ask for PC-relative addressing?
