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

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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




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