Don't know how to make queuefd work: probably need support for binding hypercalls to eventfd in kvm? Again, just a demonstration, probably not for commit, because s390 does not have vector support.
Signed-off-by: Michael S. Tsirkin <[email protected]> --- hw/s390-virtio-bus.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c index 980e7eb..b663972 100644 --- a/hw/s390-virtio-bus.c +++ b/hw/s390-virtio-bus.c @@ -315,11 +315,27 @@ static unsigned virtio_s390_get_features(void *opaque) return dev->host_features; } +static void virtio_s390_irqfd_read(void *opaque) +{ + VirtQueue *vq = opaque; + virtio_irq(vq->vdev, vq); +} + +static int virtio_s390_irqfd(void * opaque, int n, int fd, bool assign) +{ + VirtIOS390Device *dev = opaque; + VirtQueue *vq = &dev->vdev->vq[n]; + + qemu_set_fd_handler(fd, assign ? virtio_s390_irqfd_read : NULL, NULL, vq); + return 0; +} + /**************** S390 Virtio Bus Device Descriptions *******************/ static const VirtIOBindings virtio_s390_bindings = { .notify = virtio_s390_notify, .get_features = virtio_s390_get_features, + .set_irqfd = virtio_s390_irqfd, }; static VirtIOS390DeviceInfo s390_virtio_net = { -- 1.6.6.rc1.43.gf55cc
