virtio: use KVM_S390_VIRTIO_RING_ALIGN instead of relying on pagesize
This doesn't really matter, since s390 pagesize is 4k anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 3d44244..f5a2dbe 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -188,7 +188,8 @@
config = kvm_vq_config(kdev->desc)+index;
err = vmem_add_mapping(config->address,
- vring_size(config->num, PAGE_SIZE));
+ vring_size(config->num,
+ KVM_S390_VIRTIO_RING_ALIGN));
if (err)
goto out;
@@ -209,7 +210,8 @@
return vq;
unmap:
vmem_remove_mapping(config->address,
- vring_size(config->num, PAGE_SIZE));
+ vring_size(config->num,
+ KVM_S390_VIRTIO_RING_ALIGN));
out:
return ERR_PTR(err);
}
@@ -220,7 +222,8 @@
vring_del_virtqueue(vq);
vmem_remove_mapping(config->address,
- vring_size(config->num, PAGE_SIZE));
+ vring_size(config->num,
+ KVM_S390_VIRTIO_RING_ALIGN));
}
/*