From: Halil Pasic <pasic@linux.ibm.com>
Date: Thu, 23 May 2019 16:50:07 +0200
Subject: virtio/s390: use cacheline aligned airq bit vectors
Git-commit: 01b3fb1ea00d5b2af77f41da69dd9dc859c12748
Patch-mainline: v5.2-rc1
References: jsc#SLE-6197 FATE#327012 bsc#1140559 LTC#173150

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@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Michael Mueller <mimu@linux.ibm.com>
Tested-by: Michael Mueller <mimu@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/s390/virtio/virtio_ccw.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -219,7 +219,8 @@ static struct airq_info *new_airq_info(v
 	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;