Re: [PATCH 3/5] KVM: add KVM_USER_EXIT vm ioctl for userspace exit

Paolo Bonzini
2015-08-05T13:29:54Z

On 05/08/2015 15:21, Radim Krčmář wrote:
> + kvm_for_each_vcpu(idx, vcpu, kvm)
> + if (vcpu->vcpu_id == vcpu_id) {
> + kvm_make_request(KVM_REQ_EXIT, vcpu);
> + kvm_vcpu_kick(vcpu);
> +
> + return 0;
> + }
> +

Why not a vcpu ioctl? kvm_for_each_vcpu can become pretty expensive if
you have a few dozen VCPUs.

Paolo