On Wed, 3 Jan 2018 16:15:01 -0800 Andi Kleen <a...@firstfloor.org> wrote:
> > It should be a CPU_BUG bit as we have for the other mess. And that can be > > used for patching. > > It has to be done at compile time because it requires a compiler option. > > Most of the indirect calls are in C code. > > So it cannot just patched in, only partially out. You can replace the pushl ; jmp with an alternatives section (although there might be a lot of them). Even if gcc isn't smart enough to do that perl is. Alan
