Messages in this thread | | | Date | Wed, 08 Apr 2009 19:46:11 +0200 | From | Michael Riepe <> | Subject | Re: Identifying Intel Atom Z500PT |
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Hi!
Robert Schwebel wrote: > Does anyone have an idea how to properly identify an Atom Z500PT cpu? > The get_model_name() mechanics in arch/x86/kernel/cpu/common.c uses > cpuid() to find out about the brand id, which is "Genuine Intel(R) CPU" > with family 6 and model 28.
Family 6, model 28, stepping 2 seems to be common to all current Atoms -- my 330 reports the same. There are some flags, however, that currently only appear in the Z series, e.g. vmx is not available on the 230/330/N270. To differentiate between the latter, you could look for 64-bit support (which is missing in the N270) and the number of cores. Besides that, the 230/330 models lack the speedstep feature.
I don't know if there's a way to distinguish a -P model from a -PT model. But from a software point of view, they should be identical anyway.
> Below is the output of /proc/cpuinfo on that box: > > root@phyCORE:~ cat /proc/cpuinfo | grep model | head -n 2 > model : 28 > model name : Genuine Intel(R) CPU @ 1.10GHz
Strange - the 330 reports:
model name : Intel(R) Atom(TM) CPU 330 @ 1.60GHz
(running 2.6.29).
-- Michael "Tired" Riepe <michael.riepe@googlemail.com> X-Tired: Each morning I get up I die a little
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