Commit Graph

5 Commits

Author SHA1 Message Date
Mark Rutland 9d1b972f8a vringh: kill off ACCESS_ONCE()
Despite living under drivers/ vringh.c is also used as part of the userspace
virtio tools. Before we can kill off the ACCESS_ONCE()definition in the tools,
we must convert vringh.c to use {READ,WRITE}_ONCE().

This patch does so, along with the required include of <linux/compiler.h> for
the relevant definitions. The userspace tools provide their own definitions in
their own <linux/compiler.h>.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
2016-12-16 00:13:36 +02:00
Michael S. Tsirkin b9f7ac8c72 vringh: update for virtio 1.0 APIs
When switching everything over to virtio 1.0 memory access APIs,
I missed converting vringh.
Fortunately, it's straight-forward.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-15 23:49:28 +02:00
Michael S. Tsirkin b97a8a9006 vringh: 64 bit features
Pass u64 everywhere.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-12-15 23:49:23 +02:00
Dave Jones f558a845c3 Add missing module license tag to vring helpers.
[  624.286653] vringh: module license 'unspecified' taints kernel.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-05-08 10:49:03 +09:30
Rusty Russell f87d0fbb57 vringh: host-side implementation of virtio rings.
Getting use of virtio rings correct is tricky, and a recent patch saw
an implementation of in-kernel rings (as separate from userspace).

This abstracts the business of dealing with the virtio ring layout
from the access (userspace or direct); to do this, we use function
pointers, which gcc inlines correctly.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
2013-03-20 14:05:33 +10:30