The implementation is wrong for kvm, and it's unused anyway.
Drop it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-id:
20130528102023.GA30055@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
/* Flags track per-device state like workarounds for quirks in older guests. */
#define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0)
-/* QEMU doesn't strictly need write barriers since everything runs in
- * lock-step. We'll leave the calls to wmb() in though to make it obvious for
- * KVM or if kqemu gets SMP support.
- */
-#define wmb() do { } while (0)
-
/* HACK for virtio to determine if it's running a big endian guest */
bool virtio_is_big_endian(void);