[Xen-users] How does Xen present processors to DomUs?

[Gregory Cymbalski <cymbalski@xxxxxxxxx>]

Hi, I can't seem to find this in any documentation, but I'm curious  
of how Xen processor reservations work.  Do DomUs get physically  
allocated several processors to use that remain just remain a  
constant number and possibly get shared with other VMs, or do they  
really get their own processors that aren't touched by anyone else?
Just to stack two questions, I'm also wondering how safe it is to mix  
and match PAE/non-PAE linux kernels under a PAE xen.  PAE should only  
be necessary in Linux if it's been allocated more than 4 gigabytes  
from Xen, correct?  Thanks much for the replies in advance!
                        --Greg Cymbalski

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