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SubjectRe: MSR support for x86
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!

I think you are definitely right. :)

BTW, who is maintaining the /dev/MAKEDEV script? IMHO /dev/msr should be
added to it with permissions set to crw-------.
> -hpa

Cheers, Stephan

-----------------------------------------------
Stephan Meyer
+49-89-4301114
Stephan.Meyer@munich.netsurf.de
http://fatman.mathematik.tu-muenchen.de/~meyer/
-----------------------------------------------

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