Bug#373947: powernow-k8: scaling cpu frequency not working with xen

[Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>]

package linux-2.6
clone 373947 -1
reassign -1 linux-image-2.6.18-3-xen-amd64 2.6.18-7
package linux-image-2.6.18-3-xen-amd64
retitle -1 linux-image-2.6.18-3-xen-amd64: processor: Unknown symbol pm_idle
severity -1 important
tags -1 patch
submitter -1 !
thanks

Dnia piątek, 27 października 2006 20:04, Daniel Schröter napisał:
> Hello,
>
> I have here a similar problem here. powernow-k8 is working fine, if I'm
> not using the xen-system.
>
> With the xen system I get the following error messages and I can not
> control the frequency:
>
> $ dmesg |grep -i unknow
> processor: Unknown symbol pm_idle

This is not the same problem. I am affriad that not being able to load 
processor module could be much more serious for your pc health than just not 
being able to change frequency.

Maybe this small patch could help (unless pm_idle is not exported 
intentionally for reasons I am missing):

--- 
linux-source-2.6.18-3-xen-vserver-acer_7.200612091203/arch/x86_64/kernel/process-xen.c.bad  
2006-12-31 19:18:30.000000000 +0100
+++ 
linux-source-2.6.18-3-xen-vserver-acer_7.200612091203/arch/x86_64/kernel/process-xen.c      
2006-12-31 19:19:10.000000000 +0100
@@ -72,6 +72,7 @@ EXPORT_SYMBOL(boot_option_idle_override)
  * Powermanagement idle function, if any..
  */
 void (*pm_idle)(void);
+EXPORT_SYMBOL(pm_idle);
 static DEFINE_PER_CPU(unsigned int, cpu_idle_state);

 static ATOMIC_NOTIFIER_HEAD(idle_notifier);

Thank you,
Janusz