Re: [PATCH v5 5/8] virtio/s390: use cacheline aligned airq bit vectors

[Michael Mueller <mimu@xxxxxxxxxxxxx>]

On 12.06.19 13:12, Halil Pasic wrote:
> The flag AIRQ_IV_CACHELINE was recently added to airq_iv_create(). Let
> us use it! We actually wanted the vector to span a cacheline all along.
>
> Signed-off-by: Halil Pasic <pasic@xxxxxxxxxxxxx>
> Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
> ---
>   drivers/s390/virtio/virtio_ccw.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
> index f995798bb025..1da7430f94c8 100644
> --- a/drivers/s390/virtio/virtio_ccw.c
> +++ b/drivers/s390/virtio/virtio_ccw.c
> @@ -216,7 +216,8 @@ static struct airq_info *new_airq_info(void)
>   	if (!info)
>   		return NULL;
>   	rwlock_init(&info->lock);
> -	info->aiv = airq_iv_create(VIRTIO_IV_BITS, AIRQ_IV_ALLOC | AIRQ_IV_PTR);
> +	info->aiv = airq_iv_create(VIRTIO_IV_BITS, AIRQ_IV_ALLOC | AIRQ_IV_PTR
> +				   | AIRQ_IV_CACHELINE);
>   	if (!info->aiv) {
>   		kfree(info);
>   		return NULL;

Reviewed-by: Michael Mueller <mimu@xxxxxxxxxxxxx>

Michael