在 2022/1/22 上午4:27, Eugenio Pérez 写道:
This reports the guest's visible SVQ effective length, not the device's one.
I think we need to explain if there could be a case that the SVQ size is not equal to the device queue size.
Thanks
Signed-off-by: Eugenio Pérez <eperezma@xxxxxxxxxx> --- hw/virtio/vhost-shadow-virtqueue.h | 1 + hw/virtio/vhost-shadow-virtqueue.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/hw/virtio/vhost-shadow-virtqueue.h b/hw/virtio/vhost-shadow-virtqueue.h index 3521e8094d..035207a469 100644 --- a/hw/virtio/vhost-shadow-virtqueue.h +++ b/hw/virtio/vhost-shadow-virtqueue.h @@ -29,6 +29,7 @@ const EventNotifier *vhost_svq_get_svq_call_notifier( const VhostShadowVirtqueue *svq); void vhost_svq_get_vring_addr(const VhostShadowVirtqueue *svq, struct vhost_vring_addr *addr); +uint16_t vhost_svq_get_num(const VhostShadowVirtqueue *svq); size_t vhost_svq_driver_area_size(const VhostShadowVirtqueue *svq); size_t vhost_svq_device_area_size(const VhostShadowVirtqueue *svq);diff --git a/hw/virtio/vhost-shadow-virtqueue.c b/hw/virtio/vhost-shadow-virtqueue.cindex 0f2c2403ff..f129ec8395 100644 --- a/hw/virtio/vhost-shadow-virtqueue.c +++ b/hw/virtio/vhost-shadow-virtqueue.c @@ -212,6 +212,11 @@ void vhost_svq_get_vring_addr(const VhostShadowVirtqueue *svq, addr->used_user_addr = (uint64_t)svq->vring.used; }+uint16_t vhost_svq_get_num(const VhostShadowVirtqueue *svq)+{ + return svq->vring.num; +} + size_t vhost_svq_driver_area_size(const VhostShadowVirtqueue *svq) { size_t desc_size = sizeof(vring_desc_t) * svq->vring.num;
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