Hey, Mr. James Pulver

I've been working with KVM for a while on SL5.5 for mostly Windows 
guests. Recently I've needed to run XP SP3 guests for legacy 
applications. However, when I set one up it maxes out the CPUs allocated 
to it, even when the guest CPU use is 2% or idle. Googling has only 
shown that it should support ACPI, which I checked and does have ACPI 
shown under computer in Device Manager of the XP guest.

Any ideas to get XP behaving as a guest with KVM?

Yes,

Set your guest system / XP vm in device manager to Standart PC  and not 
as "" uni prossessor / or Multi prossessor "" only if u use 1 VPU/CPU on 
your host system if u use 2 or CPU added to VM you may not set it 
standart PC.

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