Re: [PATCH v1 1/1] s390: mm: convert pgste locking functions to C

[Alexander Gordeev]

On Tue, Dec 05, 2023 at 06:32:52PM +0100, Claudio Imbrenda wrote:

(Internal lists only)

...
> +	do {
> +		value = __atomic64_or_barrier(PGSTE_PCL_BIT, ptr);

Would it make sense to cpu_relax() here, e.g with a follow-up patch?

> +	} while (value & PGSTE_PCL_BIT);
> +	value |= PGSTE_PCL_BIT;
>  #endif
> -	return __pgste(new);
> +	return __pgste(value);
>  }

Thanks!