RE: [Xen-devel] [PATCH] xend: update cpu config option

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> I think the list is already representative of that idea: this 
> is a list of cpus that any of the vcpus in this domain can 
> use.  Currently without a load balancer we only get one go at 
> vcpu to cpu allocation.
> 
> Also, no reason we can't replace the current algorithm down 
> the road with a call out to the load balancer which would 
> supply the mappings.

Yes, that's what I was getting at.
 
> > However, I wander whether this should be a string so that 
> we can list 
> > e.g. cpus='0-3,5,^1'
> 
> I like that notation better, but it opens up a few questions. 
>  Do you mean the commas to indicate which cpus each vcpu is 
> allowed to use, or just a list of cpus the domain can use?  

Just a list the domain can use.

> Also, I take ^1 to mean any cpu, yes?

No, I meant 'not CPU 1'. It takes precendence over 0-3 as its later in
the list, so the final set of usable CPUs for this domain would be
0,2,3,5

> I'll end up converting the string into a big list of possible 
> cpus to use and for each vcpu pick a cpu and pin it there.

That's good for the moment, though we'll probably turn it into a list of
CPUs available to the domain. 

Best,
Ian

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel