Re: MSR support for x86
H. Peter Anvin (hpa@transmeta.com)
Fri, 28 Feb 1997 12:25:35 -0800 (PST)
> 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------- ?
>
That's a root-only device...
-hpa