Xen devel - Jun 2011 - AW: RE: RE: RE: RE: RE: No C-States any longer...

>In your case there''s no _CST found, and then no PBLK found. 
The only thing that are giveing me hope are:

  - it worked once (Xenified 2.6.18.8)
  - FADT contains C2/C3 Latency information (_CST Support is 00 BTW)
>do you mean the latest PVOPS from Konzad? I don''t think
Cstate/Pstate patches
>have been carried there, which still stay in Jeremy''s tree.
Currently I tried with stable 2.6.32.x from Jeremy and Debian Squeeze, as Konrad
said, his 2.6.39.x would expose C-States for him, what did not before, I will
try
his 2.6.39.x next. I can check this and native boot results tonight.
>Since this is the AMD box which I''m not familiar with, also CC Mark
here who is
>the owner for power management on AMD boxes.
Mark, I realy hope you have an idea. This is - by the way - the X3 400e I just
bought
because I never succeeded in getting TSC hickup-free >2.6.18 systems with my
4050e,
you eventually remember...?

Carsten.


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> From: Carsten Schiers [mailto:carsten@schiers.de]
> Sent: Thursday, June 16, 2011 2:22 PM
> 
> >In your case there''s no _CST found, and then no PBLK found.
> 
> The only thing that are giveing me hope are:
> 
>   - it worked once (Xenified 2.6.18.8)
>   - FADT contains C2/C3 Latency information (_CST Support is 00 BTW)
w/o PBLK, FADT info is incomplete to construct a full Cstate information.
> 
> >do you mean the latest PVOPS from Konzad? I don''t think
Cstate/Pstate
> patches
> >have been carried there, which still stay in Jeremy''s tree.
> 
> Currently I tried with stable 2.6.32.x from Jeremy and Debian Squeeze, as
> Konrad
> said, his 2.6.39.x would expose C-States for him, what did not before, I
will try
> his 2.6.39.x next. I can check this and native boot results tonight.
I saw one patch from Konrad which is based on his experimental code. See
attached. You may ask him for the code for your experiment. 

Thanks
Kevin



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