| Message ID | 20220126124912.90205-4-lingshan.zhu@intel.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | vDPA/ifcvf: implement shared IRQ feature | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Not a local patch |
diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 851539807bc9..c4fcacb0de3a 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -96,6 +96,10 @@ static void vhost_vdpa_setup_vq_irq(struct vhost_vdpa *v, u16 qid) if (!ops->get_vq_irq) return; + irq = ops->get_vq_irq(vdpa, qid); + if (irq < 0) + return; + irq = ops->get_vq_irq(vdpa, qid); irq_bypass_unregister_producer(&vq->call_ctx.producer); if (!vq->call_ctx.ctx || irq < 0)
When irq number is negative(e.g., -EINVAL), the virtqueue may be disabled or the virtqueues are sharing a device irq. In such case, we should not setup irq offloading for a virtqueue. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> --- drivers/vhost/vdpa.c | 4 ++++ 1 file changed, 4 insertions(+)