Bug 36618 - Enable MSR and CPUID devices in kernel for Crusoe longrun setting
Enable MSR and CPUID devices in kernel for Crusoe longrun setting
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Michael K. Johnson
Brock Organ
: FutureFeature
Depends On:
  Show dependency treegraph
Reported: 2001-04-19 00:36 EDT by Need Real Name
Modified: 2007-04-18 12:32 EDT (History)
0 users

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Fixed In Version:
Doc Type: Enhancement
Doc Text:
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Clone Of:
Last Closed: 2001-04-20 04:39:59 EDT
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Description Need Real Name 2001-04-19 00:36:51 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.72 [en] (X11; U; Linux 2.2.14-5.0 i686)

Enabling the MSR and CPUID devices will enable longrun power settings to me
changed with the Transmeta Crusoe processor.

Reproducible: Always
Steps to Reproduce:
1. Boot kernel, look at modules

Actual Results:  N/A

Any machine with a Crusoe processor.
Comment 1 Arjan van de Ven 2001-04-19 04:46:34 EDT
We ship those. Just  type modprobe "msr" and modprobe "cpuid"
Comment 2 Arjan van de Ven 2001-04-19 16:29:54 EDT
Can you explain what more you would expect ?
Comment 3 Need Real Name 2001-04-19 19:35:53 EDT
Sorry about the lack of detail, specifically:

In the kernel config for kernel-2.4.2-2 as found in kernel-source-2.4.2-2 in
configs/kernel-2.4.2-i[35]86.config CONFIG_X86_MSR and CONFIG_X86_CPUID are not
set, so /dev/cpu/%d/msr and /dev/cpu/%d/cpuid are not available.

If I modprobe cpuid or msr on kernel-2.4.2-2 I get:
modprobe: Can't locate module msr

WIth those devices available I can run the longrun utility by Daniel Quinlan
<quinlan@transmeta.com> to change the longrun settings on my Crusoe powered

So I would like to be able to "modprobe msr" and "modprobe cpuid" and perhaps
have the device files available so I can run the longrun utility above.
Comment 4 Arjan van de Ven 2001-04-20 04:29:02 EDT
$ grep MSR *2.4.2*config
kernel-2.4.2-i386-BOOT.config:# CONFIG_X86_MSR is not set
kernel-2.4.2-i386.config:# CONFIG_X86_MSR is not set
kernel-2.4.2-i386-smp.config:# CONFIG_X86_MSR is not set
kernel-2.4.2-i586.config:# CONFIG_X86_MSR is not set
kernel-2.4.2-i586-smp.config:# CONFIG_X86_MSR is not set

So we have them enabled only for i686. I will correct this and make sure
i586 / i386 have them as module as well.

Are you using the 586 kernel ?
Comment 5 Need Real Name 2001-04-20 04:39:55 EDT
Yep, I am running the kernel selected by the installer which is the i586 kernel.
Comment 6 Arjan van de Ven 2001-04-26 07:43:12 EDT
This is fixed in for the next build. I hope it will be in rawhide soon.

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