Re: CVS commit: src/sys/arch/x86/x86

[Maxime Villard <max%m00nbsd.net@localhost>]

Le 03/10/2017 à 22:47, Alexander Nasonov a écrit :
> Maxime Villard wrote:
> > In case you didn't notice, this sysctl results directly from the answers I
> > got, and is not my original plan (about which I changed my mind as a
> > consequence of the conversation). So now tell me exactly which point I didn't
> > consider and which reply I ignored. The thread is here?[1], go ahead, I'm
> > watching you.
> >
> > [1] https://marc.info/?l=netbsd-tech-kern&m=149071535930695&w=2
>
> Some people (including me) wanted more granular control. Your sysctl
> doesn't give such control.

You replied two times in this thread.

https://marc.info/?l=netbsd-tech-kern&m=149074135206958&w=2
https://marc.info/?l=netbsd-tech-kern&m=149133012012784&w=2

In the first mail, you said that it was better to have a all-or-nothing
sysctl, which is *exactly* what I just committed. In the second one, as a
reply to me, you were indeed talking about more granular control -- but with
vdso, which we don't have, so it's basically not doable.

Maxime

(PS: there is no point in having it done in a note section either, since
unpriv user can still create a binary with rdtsc enabled and side channel
the kernel.)