Re: question about periodic clocks

From: Jeremy Fitzhardinge
Date: Sat Mar 10 2007 - 11:38:04 EST


Thomas Gleixner wrote:
> Uuurg. That's ugly. clockevents expect a per CPU timer especially for
> dynamic ticks. If you cannot provide a per cpu timer, then you probably
> need to use the broadcast trick.
>

Ah, apologies, I'm wrong about this. I misread the Xen code; the timers
are per-vcpu, but as an implementation detail within the hypervisor it
keeps track of which real cpu is managing that timer. But logically the
timers are per-vcpu.

J
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