Re: [Xen-devel] Linux 3.4 dom0 kernel error loading xen-acpi-processor: Input/output error

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Mar 18, 2013 at 09:06:59AM -0400, Konrad Rzeszutek Wilk wrote:
> > On my box, I took the SSDT but it did not give any insight, except that
> > the _PDC and _OSC end up calling in the  \_PR.OSC method pasted above:
> > 
> >     Scope (\_PR)                                                            
> >     
> >     {                                                                       
> >     
> >         Processor (P000, 0x01, 0x00000410, 0x06)                            
> >     
> >         {                             
> > .. snip..                                          
> >             Method (_OSC, 4, NotSerialized)                                 
> >     
> >             {                                                               
> >     
> >                 Return (\_PR.OSC)                                           
> >     
> >                 Arg0                                                        
> >     
> >                 Arg1                                                        
> >     
> >                 Arg2                                                        
> >     
> >                 Arg3                                                        
> >     
> >             }                                                               
> >     
> >         }                                                                   
> >     
> >                                       
> >     }
> > 
> > It looks like the magic incantations are in:
> > 
> >         OperationRegion (CSDT, SystemMemory, 0xBAE0BE18, 0x0084)
> > 
> > so physical address 0xBAE0BE18. The machine is offline so it will have
> > to wait until I can get the contents of that physical address.
> 
> 
> And if I dug deep enough and looked in: /sys/firmware/acpi/tables/dynamic/
> I would have found SSDT2 and SSDT3 and SSDT2 sure enough has:
> 
>   Scope (\_PR.P000)
>     {
>         Name (_PCT, Package (0x02)
>         {
> 
> . .. snip..
> 
> and also the _PSS, _PPC, etc.
>

Hmm, on the R510 server where xen-acpi-processor doesn't work 
/sys/firmware/acpi/tables/dynamic/ is empty.. 

-- Pasi


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