tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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virtio/s390: use cacheline aligned airq bit vectors

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>

authored by

Halil Pasic and committed by
Heiko Carstens 01b3fb1e b50623e5

+2 -1
+2 -1
drivers/s390/virtio/virtio_ccw.c
··· 216 216 if (!info) 217 217 return NULL; 218 218 rwlock_init(&info->lock); 219 - info->aiv = airq_iv_create(VIRTIO_IV_BITS, AIRQ_IV_ALLOC | AIRQ_IV_PTR); 219 + info->aiv = airq_iv_create(VIRTIO_IV_BITS, AIRQ_IV_ALLOC | AIRQ_IV_PTR 220 + | AIRQ_IV_CACHELINE); 220 221 if (!info->aiv) { 221 222 kfree(info); 222 223 return NULL;