linux-kernel - Identifying Intel Atom Z500PT

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Message-ID: <20090407222144.GU5367@pengutronix.de>
Date:	Wed, 8 Apr 2009 00:21:44 +0200
From:	Robert Schwebel <r.schwebel@...gutronix.de>
To:	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...e.hu>, tglx@...utronix.de
Subject: Identifying Intel Atom Z500PT

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.

Below is the output of /proc/cpuinfo on that box:

root@...CORE:~ cat /proc/cpuinfo | grep model | head -n 2
model           : 28
model name      : Genuine Intel(R) CPU        @ 1.10GHz
root@...CORE:~ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 28
model name      : Genuine Intel(R) CPU        @ 1.10GHz
stepping        : 2
cpu MHz         : 416.000
cache size      : 512 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 1
apicid          : 0
initial apicid  : 0
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2 ssse3 xtpr pdcm lahf_lm tpr_shadow vnmi flexpriority
bogomips        : 2194.69
clflush size    : 64
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 28
model name      : Genuine Intel(R) CPU        @ 1.10GHz
stepping        : 2
cpu MHz         : 416.000
cache size      : 512 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 1
apicid          : 1
initial apicid  : 1
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl vmx est tm2 ssse3 xtpr pdcm lahf_lm tpr_shadow vnmi flexpriority
bogomips        : 2194.51
clflush size    : 64
power management:

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