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Re: [Xen-devel] why are deep cstates disabled?
| To: | Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, "Xen-Devel (E-mail)" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] why are deep cstates disabled? |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Mon, 19 Oct 2009 18:26:36 +0100 |
| Cc: | |
| Delivery-date: | Mon, 19 Oct 2009 10:27:05 -0700 |
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| Thread-topic: | [Xen-devel] why are deep cstates disabled? |
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On 19/10/2009 18:03, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote: > My D630 has no HPET... or at least there is no indication > in the BIOS menu that there is an HPET. I think you do, since cpuidle_disable_deep_cstate() is called from handle_rtc_once(), which gets set up as a hook by hpet_broadcast_init(), which only gets that far If it has managed to initialise an HPET. > I tried setting "hpetbroadcast" and dom0 boot fails. Err.. What happens? > Is there any way to get C3 working on my box or am > I out of luck? You could try commenting out function disable_pit_irq() and its __initcall() invocation. This should cause fallback to pit_broadcast mode. It's a completely different non-HPET-related approach that you could try. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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