On 16/04/19 20:01, Christian Borntraeger wrote: > v1->v2: > - add kvm_vcpu parameter to kvm_arch_no_poll > - add kvm stat in the s390 implementation > - make the value tunable > > Folks, > > this is a very simple variant to disable halt polling when the KVM host > is already running virtualized. We could imagine more complex variants > (like tuning down the halt polling value) but this seems to do the trick > for some kvm deployment scenarios on s390x. (e.g. having multiple LPARS > with KVMs that are in itself already overcommitted). Ok to queue this for 5.2? (Stupid question, I thought LPARs are partitions and as such were never overcommitted. What is it that separates an LPAR from a zVM or KVM guest?) Paolo
