Am 20.09.21 um 20:05 schrieb Paolo Bonzini:
On 20/09/21 17:06, Christian Borntraeger wrote:here is a backport for 4.19 of commit a3e03bc1368 ("KVM: s390: index kvm->arch.idle_mask by vcpu_idx") This basically removes the kick_mask parts that were introduced with kernel 5.0 and fixes up the location of the idle_mask to the older place. FWIW, it might be a good idea to also backport 8750e72a79dd ("KVM: remember position in kvm->vcpus array") to avoid a performance regression for large guests (many vCPUs) when this patch is applied. @Paolo Bonzini, would you be ok with 8750e72a79dd in older stable releases?Sure, I suppose you're going to send a separate backport that I can ack.
It does seem to apply when cherry-picked, but I can send it as a patch if you and Greg prefer it that way.
