RE: [Xen-devel] Re: [Xen-ia64-devel] [PATCH 0/3] IA64: add cpufreq support

["Yu, Ke" <ke.yu@xxxxxxxxx>]

Hi Isaku,

I tried your updated patch, and xenpm works in my IPF box. the attached is the 
xenpm output.

>From you xenpm output, one possible reason is that the DBS (alias of Px) 
>feature is not enabled in BIOS, thus xen can not get enough Px information to 
>initialize cpufreq driver. You can double confirm by:
- check BIOS to see if DBS is enabled.
- or try the native linux (e.g. RHEL5), to see if the cpufreq works.

Also, it will be helpful if you can attach the xen serial log. please add 
"loglvl=info" to elilo xen option, to make sure cpufreq information is printed.

Best Regards
Ke

Isaku Yamahata wrote:
> Hi, Yu.
> Thnaks for updating the patches while you're off.
>
> I applied your patch with some style fixes and tried xenpm.
> (I attached the fixed patch. Please confirm I didn't breake them.)
> Then I got the followings. (NOTE: I added cpufreq=xen to xen boot
> option) Doesn't xenpm work on ia64? Or is there another way to test
> them?
>
> # xenpm
> Xen cpuidle is not enabled!
> failed to get max P-state
>
> thanks,
>
> On Sat, Sep 27, 2008 at 10:11:29AM +0800, Yu, Ke wrote:
>> This patchset add cpufreq support for ia64 platform. The logic is
>> borrowed from linux kernel and ported to xen. The common cpufreq
>> infrastructure is already in xen and works in x86 side, so this
>> patchset reuse the common infrastructure and add ia64 specific
>> driver and cpufreq notify hypercall.
>>
>> Hypervisor side:
>> 1. px-xen-ipf-driver: add cpufreq ia64 driver
>> 2 .px-xen-ipf-hypercall: implement ia64 cpufreq notify hypercall
>>
>> Dom0 side:
>> 1. px-dom0-add-ia64-hypercall.patch: add ia64 cpufreq notify
>> hypercall
>>
>> Signed-off-by:  Liu Jinsong <jinsong.liu@xxxxxxxxx>
>>                 Yu Ke <ke.yu@xxxxxxxxx>
>>
>> BTW, this patchset depends on the xen-unstable tree
>> (http://xenbits.xensource.com/staging/xen-unstable.hg) cset 18550,
>> 18551, 18552, and linux xen tree
>> (http://xenbits.xensource.com/linux-2.6.18-xen.hg) cset 681, which
>> restructure the common cpufreq code for ia64. so ia64 tree need to
>> sync before applying this patchset.
>>
>>
>> _______________________________________________
>> Xen-ia64-devel mailing list
>> Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-ia64-devel

Attachment: xenpm.log
Description: xenpm.log

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