quoted

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!