Re: [Xen-devel] PV-vNUMA issue: topology is misinterpreted by the guest

[Tim Deegan <tim@xxxxxxx>]

At 14:01 +0200 on 27 Jul (1438005701), Juergen Gross wrote:
> There would be another solution, of course:
> 
> Support hyperthreads in the Xen scheduler via gang scheduling. While
> this is not a simple solution, it is a fair one. Hyperthreads on one
> core can influence each other rather much. With both threads always
> running vcpus of the same guest the penalty/advantage would stay in the
> same domain. The guest could make really sensible scheduling decisions
> and the licensing would still work as desired.

This might also be interesting for people worried about side-channels
(e.g. http://sophia.re/RECON ).

Tim.

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