Re: [PATCH] Sample fix for hyperthread exploit

[Chris Wright]

* Con Kolivas (kernel@xxxxxxxxxxx) wrote:
> On Wed, 1 Jun 2005 22:06, Arjan van de Ven wrote:
> > > Comments?
> >
> > I don't think it's really worth it, but if you go this way I'd rather do
> > this via a prctl() so that apps can tell the kernel "I'd like to run
> > exclusive on a core". That'd be much better than blindly isolating all
> > applications.
> 
> I agree, and this is where we (could) implement the core isolation. I'm still 
> under the impression (as you appear to be) that this theoretical exploit is 
> not worth trying to work around.

Also, uid is not sufficient.  Something more comprehensive (like ability
to ptrace) would be appropriate.

thanks,
-chris
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