Bug#405140: Bug#373947: powernow-k8: scaling cpu frequency not working with xen
retitle 405140 linux-image-2.6.18-3-xen-amd64: processor: Unknown symbol pm_idle
thanks
Dnia niedziela, 31 grudnia 2006 21:00, Bastian Blank napisał:
> severity 405140 normal
> reassign 405140 linux-2.6
> retitle 405140 linux-2.6 - xen images does not support frequency scaling
Bastian,
I am sorry, maybe I was not specific enough, but you missed my point completly.
I did not intended to create another bug report about unavailability of frequency
scaling in xen. What I was trying to do was to create a new bug report about
not being able to load processor module for linux-image-2.6.18-3-xen-amd64
(and linux-image-2.6.18-3-xen-vserver-amd64 as well). I found that already
reported indirectly by Daniel Schroeter's in his comments to bug #373947:
> ...
> $ dmesg |grep -i unknow
> processor: Unknown symbol pm_idle
> ...
and that was why I decided to use clone and retitle commands.
If this is not correct way to do, please give me some hints for the future.
> tags 405140 -patch
> thanks
>
> On Sun, Dec 31, 2006 at 08:04:24PM +0100, Janusz Krzysztofik wrote:
> > 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.
>
> This is not supported at all anyway.
I am not sure what you mean.
Processor module for linux-image-2.6.18-3-xen-686 loads fine on my Celeron M laptop.
And even if frequency scaling is not available, I can use cpu throttling, for example.
After adding "EXPORT_SYMBOL(pm_idle);" to arch/x86_64/kernel/process-xen.c,
like it is done in arch/i386/kernel/process-xen.c, I can now load processor module
without problems on my Core2 Duo PC, get access to /proc/acpi/processor/CPU*/*,
and load other dependant modules.
So I really don't know what you mean saying "not supported".
Anyway, if you are really sure it is not supported and can not be corrected
(applying my patch or any other way), than please make it clear and remove all theese
not supported modules displaying error messages from linux-modules-2.6.18-3-xen-amd64
and linux-modules-2.6.18-3-xen-vserver-amd64 packages.
And please warn (in release notes?) all laptop users they sholud not use xen kernels
because not being able to use thermal module may break their hardware.
Or even better, apply a patch preventing xen kernels from starting on such machines.
>
> Bastian
Cheers,
Janusz
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