On 12.03.2021 15:03, Ian Jackson wrote:
> Dario Faggioli writes ("[PATCH] xen: fix for_each_cpu when NR_CPUS=1"):
>> -#if NR_CPUS > 1
>> #define for_each_cpu(cpu, mask) \
>> for ((cpu) = cpumask_first(mask); \
>
> Just a thought: does cpumask_first work on an empty mask ?I'm sure it does, yes - it'll return a value >= nr_cpu_ids in this case. If it didn't work, NR_CPUS > 1 would also be badly affected. Jan
