@@ -249,9 +249,34 @@ static unsigned syborg_virtio_get_features(void *opaque)
return proxy->host_features;
}
+static void syborg_virtio_irqfd_read(void *opaque)
+{
+ VirtQueue *vq = opaque;
+ virtio_irq(vq->vdev, vq);
+}
+
+static int syborg_virtio_irqfd(void * opaque, int n, int fd, bool assign)
+{
+ SyborgVirtIOProxy *proxy = opaque;
+ VirtQueue *vq = &proxy->vdev->vq[n];
+
+ qemu_set_fd_handler(fd, assign ? syborg_virtio_irqfd_read : NULL, NULL, vq);
+ return 0;
+}
+
+static int syborg_virtio_queuefd(void * opaque, int n, int fd, bool assign)
+{
+ SyborgVirtIOProxy *proxy = opaque;
+ return kvm_set_ioeventfd(proxy->busdev.mmio[0].addr +
+ SYBORG_VIRTIO_QUEUE_NOTIFY << 2,
+ n, fd, assign);
+}
+
static VirtIOBindings syborg_virtio_bindings = {
.notify = syborg_virtio_update_irq,
.get_features = syborg_virtio_get_features,
+ .set_irqfd = syborg_virtio_irqfd,
+ .set_queuefd = syborg_virtio_queuefd,
};
static int syborg_virtio_init(SyborgVirtIOProxy *proxy, VirtIODevice *vdev)
No idea if it's right .. and syborg does not support vectors so we won't get performance gains out of it either - so quite likely it's best to just keep this patch out of qemu. But just to show what's possible. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- hw/syborg_virtio.c | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-)