* Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx> wrote: > On Tue, 2018-11-20 at 10:52 +0100, Ingo Molnar wrote: > > * Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx> wrote: > > > > > +X86 Documentation > > > [...] > > > + > > > +At run time, /proc/cpuinfo shows the availability of SHSTK and IBT. > > > > What is the rough expected performance impact of CET on average function > > call frequency user applications and the kernel itself? > > I don't have any conclusive numbers yet; but since currently only user-mode > protection is implemented, I suspect any impact would be most likely to the > application. The kernel would spend some small amount of time on the setup of > CET. This is horribly vague. Thanks, Ingo
