From mboxrd@z Thu Jan  1 00:00:00 1970
From: Carsten Schiers <carsten@schiers.de>
Subject: AW: AW: AW: RE: No C-States any longer...
Date: Thu, 9 Jun 2011 14:37:39 +0200
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To: Ian Campbell <Ian.Campbell@eu.citrix.com>
Cc: "kevin.tian" <kevin.tian@intel.com>, xen-devel <xen-devel@lists.xensource.com>
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>Do you have these modules loaded?
>$ grep -E CPUFREQ\|PROCESSOR /home/ianc/config-2.6.32.40-xen-amd64

>CONFIG_ACPI_PROCESSOR=m
N, there is no extra module (see below)

>CONFIG_ACPI_PROCESSOR_AGGREGATOR=m
N, module should be acpi_pad

>CONFIG_X86_ACPI_CPUFREQ=m
N, but CPUFREQ managent is done in Xen

>CONFIG_ACPI_PROCESSOR_XEN=m
Y, acpi_processor.ko is built instead of "regular" one from 

lsmod | grep acpi:
acpi_processor           5053      1 processor,[permanent]

Carsten.