Subject: Re: [RFC v6 13/62] powerpc: track allocation status of all pkeys

From: Thiago Jung Bauermann <[email-masked]>
Date: Mon, 31 Jul 2017 15:15:55 -0300

Ram Pai <[email-masked]> writes:
>  static inline int mm_pkey_free(struct mm_struct *mm, int pkey)
>  {
> -	return -EINVAL;
> +	if (!pkey_inited)
> +		return -1;

Sorry, I missed this earlier but the pkey_free syscall will pass this
value to userspace so it needs to be an errno as well (-EINVAL?).

> +
> +	if (!mm_pkey_is_allocated(mm, pkey))
> +		return -EINVAL;
> +
> +	mm_set_pkey_free(mm, pkey);
> +
> +	return 0;
>  }

-- 
Thiago Jung Bauermann
IBM Linux Technology Center