3.2-rc2+: Reported regressions from 3.0 and 3.1

[Konrad Rzeszutek Wilk]

> >From what I can see, you get the following callchain:
> 
> start_kernel
> |-> setup_arch
>     |-> x86_init.oem.arch_setup = xen_arch_setup
>     ....
>     |-> check_bugs
>         |-> identify_boot_cpu
> 	    |-> identify_cpu
> 	        |-> select_idle_routine
> 
> 
> so xen_arch_setup will set pm_idle and select_idle_routine will honour
> it. I'm being told this is run either in the dom0 or the paravirt guest
> and if so, I don't see any issue with this for baremetal. So you can
> have my ACK provided this is tested on baremetal too.

Tested on baremetal and there were no abnormalities. Thanks!