Re: [Xen-devel] [PATCH v2] x86: Fixup IRQs when CPUs go down during shutdown

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 02/12/15 13:46, Ross Lagerwall wrote:
> @@ -298,6 +299,13 @@ static void stop_this_cpu(void *dummy)
>  void smp_send_stop(void)
>  {
>      int timeout = 10;
> +    cpumask_t online;
> +
> +    cpumask_clear(&online);
> +    cpumask_set_cpu(smp_processor_id(), &online);

You can avoid this intermediate variable with cpumask_of(smp_processor_id())

There are a set of pre-canned cpumasks with a single cpu set.

~Andrew

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