Re: [PATCH v2 1/4] KVM: add spinlock optimization framework

Paolo Bonzini
2017-08-08T07:34:14Z

On 08/08/2017 06:05, Longpeng(Mike) wrote:
> return 1;
> diff --git a/arch/s390/kvm/diag.c b/arch/s390/kvm/diag.c
> index ce865bd..4ea8c38 100644
> --- a/arch/s390/kvm/diag.c
> +++ b/arch/s390/kvm/diag.c
> @@ -150,7 +150,7 @@ static int __diag_time_slice_end(struct kvm_vcpu *vcpu)
> {
> VCPU_EVENT(vcpu, 5, "%s", "diag time slice end");
> vcpu->stat.diagnose_44++;
> - kvm_vcpu_on_spin(vcpu);
> + kvm_vcpu_on_spin(vcpu, kvm_arch_vcpu_in_kernel(vcpu));
> return 0;
> }
>

IIUC, diag is a privileged instruction so this an also be "true".

Paolo