RE: RE: RE: RE: RE: RE: [Xen-devel] No C-States any longer...

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Carsten Schiers [mailto:carsten@xxxxxxxxxx]
> Sent: Tuesday, June 14, 2011 4:27 AM
> 
> One step further: the problem is that pr->pblk is not set, thus
> acpi_processor_get_power_info_fadt fails.
> Knowing this, I found an error in the ACPI_DEBUG output that
> corresponds:
> 
> [   17.062739] processor_xen-0222 [00] xen_acpi_processor_get: Processor
> [-1:0]
> [   17.062902] processor_xen-0225 [00] xen_acpi_processor_get: No PBLK
> (NULL address)

this looks a bit strange. how about the native log?

> 
> It does this for all processors. pr_id is always -1, pr->acpi_id
> counting up from 0 to 2.

what's your dom0 vcpu number? and how about physical cpu?

> 
> Any help is welcome, but I will analyze further...

Current Dom0 depends on several Xen specific functions like 
xen_acpi_get_power_info
you mentioned earlier, which is a copy from native acpi_get_power_info with xen
specific tweaks added. there's possibility that in your environment general 
ACPI code
is changed which is not reflected in Xen specific versions. 

Thanks
Kevin

> 
> Carsten.
> 
> -----Ursprüngliche Nachricht-----
> Von: Carsten Schiers
> Gesendet: Montag, 13. Juni 2011 15:22
> An: ke.yu; kevin.tian
> Cc: xen-devel
> Betreff: AW: RE: RE: RE: RE: RE: [Xen-devel] No C-States any longer...
> 
> >>I will try to boot native Linux in order to verify 100%
> >> that the tables
> >> are there.
> >
> >yes, that's interesting data to compare.
> 
> I have booted with a Live Linux and dumped acpi tables. Those are 100%
> identical with those
> I received from Dom0. I will now start looking into
> acpi_processor_get_power_info_fadt And
> check, why it is returning -ENODEV.
> 
> Carsten.
> 
> 
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> 


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