Re: [PATCH 1/2] genirq: Fix IRQ threads affinity VS cpuset isolated partitions

[Thomas Gleixner]

On Tue, Nov 18 2025 at 11:27, Waiman Long wrote:
>> +static inline void irq_thread_set_affinity(struct task_struct *t,
>> +					   struct irq_desc *desc)
>> +{
>> +	kthread_bind_mask(t, irq_data_get_effective_affinity_mask(&desc->irq_data));
>> +}
>
> According to irq_thread_check_affinity(), accessing the cpumask returned 
> from irq_data_get_effective_affinity_mask(&desc->irq_data) requires 
> taking desc->lock to ensure its stability. Do we need something similar 
> here? Other than that, it looks good to me.

That's during interrupt setup so it should be stable (famous last words)