[RFC PATCH v3 04/10] sched/core: Dont allow to use CPU marked as paravirt

[K Prateek Nayak]

Hello Shrikanth,

On 9/10/2025 11:12 PM, Shrikanth Hegde wrote:
> @@ -2462,8 +2462,13 @@ static inline bool is_cpu_allowed(struct task_struct *p, int cpu)
>  		return cpu_online(cpu);
>  
>  	/* Non kernel threads are not allowed during either online or offline. */
> -	if (!(p->flags & PF_KTHREAD))
> -		return cpu_active(cpu);
> +	if (!(p->flags & PF_KTHREAD)) {
> +		/* A user thread shouldn't be allowed on a paravirt cpu */
> +		if (is_cpu_paravirt(cpu))
> +			return false;
> +		else

nit. redundant "else". I think this can be simplified as:

    return !is_cpu_paravirt(cpu) && cpu_active(cpu);

> +			return cpu_active(cpu);
> +	}

-- 
Thanks and Regards,
Prateek