Re: [PATCH tip/core/rcu 0/4] Programmatic nestable expedited grace periods

[Arjan van de Ven]

> > To show the boot time, I'm using the timestamp of the "Write protecting" line,
> > that's pretty much the last thing we print prior to ring 3 execution.
>
> That's a little sad; we ought to be write-protecting kernel read-only
> data as *early* as possible.

well... if you are compromised before the first ring 3 instruction...
.... you have a slightly bigger problem than where in the kernel we write protect things.


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