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Re: [Xen-devel] [PATCH 2/4] CPUIDLE: Avoid remnant LAPIC timer intr whil
| To: | "Wei, Gang" <gang.wei@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH 2/4] CPUIDLE: Avoid remnant LAPIC timer intr while force hpetbroadcast |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 11 Sep 2008 08:38:06 +0100 |
| Cc: | |
| Delivery-date: | Thu, 11 Sep 2008 00:38:07 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH 2/4] CPUIDLE: Avoid remnant LAPIC timer intr while force hpetbroadcast |
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On 10/9/08 15:25, "Wei, Gang" <gang.wei@xxxxxxxxx> wrote: >> It's not clear to me the disable/enable_LAPIC_timer() work is worthwhile for >> the few timer interrupts it is likely to avoid. The other bit of the patch >> is a good bugfix though. I've taken just the latter part. > > Thanks for accept most of these patches. As to disable/enable_LAPIC_timer(), I > add them because some platforms require the LAPIC timer intr being disabled > before entering C3, otherwise there may be some unexpected things. As a > reference, Linux kernel always do so. Is this a documented aspect of C3, or just one of those things? Do you know what kind of 'unexpected things' can happen? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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