Re: [patch] PIII/Katmai & FXSAVE support, disable serial-#, 2.2.2

Jakub Jelinek (jj@sunsite.ms.mff.cuni.cz)
Wed, 3 Mar 1999 18:45:26 +0100 (CET)

>
> On Wed, 3 Mar 1999, Charles Cazabon wrote:
>
> > Intel has said this is the case; however, the German magazine c't has a hacker
> > on staff who has managed to turn the serial number back on from userland,
> > using only documented features of the processor.
> >
>
> Uhm ... big deal. Don't all SPARC and UltraSPARC CPU's have serial numbers
> that can be read?

No, they don't.

> I mean I get this from a sysinfo command on a Solaris
> box:
>
> ...
> Host ID is 80816e38
> Serial Number is 8482360
> Manufacturer is Sun (Sun Microsystems)
> System Model is Ultra 1
> Main Memory is 252 MB
> Virtual Memory is 271 MB

This is read from the kernel and comes from PROM, but a userland program does not
have a direct access to anything like that.

Cheers,
Jakub
___________________________________________________________________
Jakub Jelinek | jj@sunsite.mff.cuni.cz | http://sunsite.mff.cuni.cz
Administrator of SunSITE Czech Republic, MFF, Charles University
___________________________________________________________________
UltraLinux | http://ultra.linux.cz/ | http://ultra.penguin.cz/
Linux version 2.2.2 on a sparc64 machine (3958.37 BogoMips)
___________________________________________________________________

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