Re: cpu hotplug

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On Sun, Sep 19, 2010 at 03:40:45PM +0200, Gleb Natapov wrote:
> halted state is not the way to check for whether cpu is online or
> offline. cpu may be online but executing hlt instruction so 
> its state will be halted, but cpu itself is online. Actually with kvm
> today you are not able to check that cpu is offline if it was ever
> online. Query a guest for cpu status.

In that regard, "info cpus" does seem to work - as it only shows me
the cpus that have ever been online.  Ejecting a cpu in the guest does
not remove it from "info cpus", but then, I don't think kvm does
remove it from being available after an eject.

-Kevin
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