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xen-devel
[Xen-devel] Re: [RFC PATCH V4 4/5] cpuidle: driver for xen
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To: |
Trinabh Gupta <trinabh@xxxxxxxxxxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [RFC PATCH V4 4/5] cpuidle: driver for xen |
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From: |
Len Brown <lenb@xxxxxxxxxx> |
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Date: |
Thu, 24 Mar 2011 03:18:14 -0400 (EDT) |
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Cc: |
venki@xxxxxxxxxx, ak@xxxxxxxxxxxxxxx, suresh.b.siddha@xxxxxxxxx, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, peterz@xxxxxxxxxxxxx, benh@xxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, sfr@xxxxxxxxxxxxxxxx, arjan@xxxxxxxxxxxxxxx |
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Thu, 24 Mar 2011 17:10:16 -0700 |
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Alpine 2.02 (LFD 1266 2009-07-14) |
Is a CONFIG_XEN kernel supposed to use just HLT in idle?
xen_arch_setup() does this:
pm_idle = default_idle;
boot_option_idle_override = IDLE_HALT;
which has that effect. I guess this makes sense b/c the
CONFIG_XEN kernel is Dom0 and the real C-sates are done
by the hypervisor?
Would the same CONFIG_XEN kernel binary ever not
run xen_arch_setup(), run on raw hardware, and want
to use idle states other than HLT?
thanks,
-Len Brown, Intel Open Source Technology Center
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