>>> On 02.08.16 at 08:43, <jgr...@suse.com> wrote:
> --- a/arch/x86/xen/pmu.c
> +++ b/arch/x86/xen/pmu.c
> @@ -547,8 +547,11 @@ void xen_pmu_init(int cpu)
>       return;
>  
>  fail:
> -     pr_info_once("Could not initialize VPMU for cpu %d, error %d\n",
> -             cpu, err);
> +     if (err == -EOPNOTSUPP)
> +             pr_info_once("VPMU disabled by hypervisor.\n");
> +     else
> +             pr_info_once("Could not initialize VPMU for cpu %d, error %d\n",
> +                     cpu, err);

I'm sorry for not already having thought about this for v1, but
what about older hypervisors, where the hypercall would return
-ENOSYS?

Jan


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