[Xen-devel] Question about vcpu_avail

[Michal Novotny <minovotn@xxxxxxxxxx>]

Hi,
I would like to ask about vcpu_avail variable in XendDomainInfo.py. Is 
that variable working and what is it used for ? I think it's a bitmask 
showing what VCPUs are used and what are not, am I correct? Also, I'm 
thinking of adding some variable of `maxvcpus` to define maximum number 
of vcpus for PV guests. This way we could define a config file like:
vcpus = 2
maxvcpus = 4

and by setting `xm vcpu-set {domain} {numberOfVCPUs}` we can set up to 4 
vcpus. Current behavior is to set to 1 vcpu and back to 2 vcpus but 
never to cross the number defined in of vcpus. Now we could be able to 
allocate up to 4 vcpus to the guest and not just 2... What do you think 
about that idea?
Thanks,
Michal

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