* Yu-cheng Yu [off-list ref] wrote:

On Tue, 2018-11-20 at 10:52 +0100, Ingo Molnar wrote:

quoted

* Yu-cheng Yu [off-list ref] wrote:

quoted

+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