Dave Jones <davej@codemonkey.org.uk> wrote:
> In some obscure documentation, I found out that recent Athlons
> (model 8 stepping 1 and greater) behave better with certain MSRs
> programmed slightly differently to those of earlier models.
> It's likely a lot of BIOSen out there don't get this right
> (Especially in the BIOS older than CPU case).
>
> x86info[1] will be able to dump these registers (run as root
> and use -m option), and mail me the results so I can confirm
> my suspicions. I've a patch pending, but I'd rather get some
> test data before unleashing it on unsuspecting victims.
>
> I'm particularly interested in hearing from folks who have
> been experiencing problems with model 8 and above Athlons,
> earlier models are less interesting for the moment.
>
> Dave
>
> [1] http://www.codemonkey.org.uk/x86info/x86info-1.11.tar.gz
2 points:
-- The link is:
http://www.codemonkey.org.uk/x86info/x86info-1.11.tgz
-- A note to those not in the know to load the "msr" driver
first, for example on my RedHat system:
insmod msr
In any case, here's the result from my recently acquired Athlon
XP 2600+:
31 23 15 7
MSR: 0x0000002a=0x00000000 : 00000000 00000000 00000000 00000000
MSR: 0xc0000080=0x00000000 : 00000000 00000000 00000000 00000000
MSR: 0xc0010010=0x00160604 : 00000000 00010110 00000110 00000100
MSR: 0xc0010015=0x080b9008 : 00001000 00001011 10010000 00001000
MSR: 0xc001001b=0x6003d22f : 01100000 00000011 11010010 00101111
Family: 6 Model: 8 Stepping: 1
CPU Model : Athlon XP (Thoroughbred)[B0]
Processor name string: AMD Athlon(tm) XP Processor
PowerNOW! Technology information
Available features:
Temperature sensing diode present.
For comparison, here is the output from an Athlon XP 1800+:
31 23 15 7
MSR: 0x0000002a=0x00000000 : 00000000 00000000 00000000 00000000
MSR: 0xc0000080=0x00000000 : 00000000 00000000 00000000 00000000
MSR: 0xc0010010=0x00168604 : 00000000 00010110 10000110 00000100
MSR: 0xc0010015=0x01001008 : 00000001 00000000 00010000 00001000
MSR: 0xc001001b=0x6003d22f : 01100000 00000011 11010010 00101111
Family: 6 Model: 6 Stepping: 2
CPU Model : Athlon MP (palomino)
Processor name string: AMD Athlon(TM) MP 1800+
PowerNOW! Technology information
Available features:
Temperature sensing diode present.
--
Erich Stefan Boleyn <erich@uruk.org> http://www.uruk.org/
"Reality is truly stranger than fiction; Probably why fiction is so popular"
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This archive was generated by hypermail 2b29 : Sat Nov 23 2002 - 22:00:33 EST