> + case KVM_CAP_X86_GUEST_LBR:> + r = -EINVAL;> + if (cap->args[0] &&> + x86_perf_get_lbr_stack(&kvm->arch.lbr_stack)) {> + pr_err("Failed to enable the guest lbr feature\n");Remove the pr_err. We don't want unprivileged users trigger unlimitedkernel printk.