Re: [PATCH v2 4/4] x86/static_call: Add inline static call implementation for x86-64

[Linus Torvalds]

On Thu, Nov 29, 2018 at 9:59 AM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
>
> Do you realize that the cmpxchg used by the first attempts of the
> dynamic modification of code by ftrace was the source of the e1000e
> NVRAM corruption bug.

If you have a static call in IO memory, you have bigger problems than that.

What's your point?

Again - I will point out that the things you guys have tried to come
up with have been *WORSE*. Much worse.

               Linus