On Sun, Aug 14, 2016 at 12:52:40AM -0700, Andy Lutomirski wrote: > On Fri, Aug 12, 2016 at 7:29 AM, Josh Poimboeuf <jpoim...@redhat.com> wrote: > > There has been a 64-byte gap at the end of the irq stack for at least 12 > > years. It predates git history, and I can't find any good reason for > > it. Remove it. What's the worst that could happen? > > I can't think of any reason this would matter. > > For that matter, do you have any idea why irq_stack_union is a union > or why we insist on sticking it at %gs:0? Sure, the *canary* needs to > live at a fixed offset (because GCC is daft, sigh), but I don't see > what that has to do with the rest of the IRQ stack.
Good question. I have no idea... -- Josh
