Re: [Xen-devel] [PATCH V2 2/2] xen-netfront: limit vnic max_queues number to online cpus

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 23.10.15 at 11:19, <joe.jin@xxxxxxxxxx> wrote:
>  
> @@ -164,6 +166,19 @@ struct netfront_rx_info {
>       struct xen_netif_extra_info extras[XEN_NETIF_EXTRA_TYPE_MAX - 1];
>  };
>  
> +static int xennet_set_max_queues(const char *val, struct kernel_param *kp)
> +{
> +     unsigned int cpus = num_online_cpus();
> +     unsigned int max_queues = simple_strtoul(val, NULL, 10);
> +
> +     if (max_queues == 0 || max_queues > cpus) {
> +             pr_err("max_queues %u is out of range [0 - %u]!\n", 

I suppose you mean "...[1 - %u]!\n" here?

Jan


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