Re: MSR support for x86
Stephan Meyer (sensei@wiesel.de)
Fri, 28 Feb 1997 20:53:47 +0100 (MET)
On 28 Feb 1997, H. Peter Anvin wrote:
> > This is an interesting suggestion :)
> > If we implement this, it should be tightly secured since any user could
> > mess around with the 2nd level cache. A possible application could be a
> > CPU manager!
> >
>
> I think letting any non-root user messing with the MSRs or anything
> like that is asking for trouble in a big way. /dev/msr definitely
> should be a root-only device!
>
> -hpa
I'm not a security expert, but isn't it enough to set permissions to
something like crw------- ?
my DM 0.03
Stephan