Re: [Xen-devel] [PATCH 2/4] CPUIDLE: Avoid remnant LAPIC timer intr while force hpetbroadcast

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

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



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