https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81490
--- Comment #19 from H. Peter Anvin <hpa at zytor dot com> --- So the Linux kernel, right now, basically does (b); we'd like to do something more like (a). Because the stack canary (which is a percpu variable in the Linux kernel) is hard-coded in gcc to be %gs:0x28, models (c) and (d) are not available to us. Even if they were, it would have issues with moving modules further than 2G from the main kernel. We don't need the special relocations since we can see which references point into the appropriate section during our post-link processing, but someone else may have use for them.
