On 3/30/20 3:15 PM, David Hildenbrand wrote: > On 30.03.20 15:09, Janosch Frank wrote: >> On 3/30/20 3:03 PM, Janosch Frank wrote: >>> On 3/30/20 2:50 PM, David Hildenbrand wrote: >>>> On 30.03.20 14:20, Janosch Frank wrote: >>>>> + report(data->vm[0].total_cpus == smp_query_num_cpus(), "cpu # total"); >>>>> + report(data->vm[0].conf_cpus == smp_query_num_cpus(), "cpu # configured"); >>>>> + report(data->vm[0].standby_cpus == 0, "cpu # standby"); >>>>> + report(data->vm[0].reserved_cpus == 0, "cpu # reserved"); >>>> >>>> IIRC, using -smp 1,maxcpus=X, you could also test the reported reserved >>>> CPUs. >>> >>> Will try that >> >> Just like I thought, QEMU does not manipulate cpu counts and KVM >> pre-sets standby and reserved to 0. So we have absolutely no change when >> adding the smp parameter. > > Well, for TCG it is properly implemented. Is this a BUG in KVM's STSI code? > KVM tracks online cpus and created cpus, but only reports the online ones in stsi. Will QEMU register/create a reserved CPU with KVM? To fix this we could also fix-up the cpu reporting in QEMU after KVM wrote its results. @Christian: Guidance?
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