The implementation is wrong for kvm, and it's unused anyway. Drop it. Signed-off-by: Michael S. Tsirkin <m...@redhat.com> --- hw/virtio/virtio-pci.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 87b78bc..f4db224 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -89,12 +89,6 @@ /* 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); -- MST