Re: [Qemu-devel] [[RFC v3 03/12] virtio: init memory cache for packed ring

[Jason Wang <jasowang@redhat.com>]

On 2018年10月15日 15:09, Wei Xu wrote:
>>> -hwaddr virtio_queue_get_avail_size(VirtIODevice *vdev, int n)
>>> +hwaddr virtio_queue_get_driver_size(VirtIODevice *vdev, int n)
>>>   {
>>> -    return offsetof(VRingAvail, ring) +
>>> -        sizeof(uint16_t) * vdev->vq[n].vring.num;
>>> +    int s;
>>> +
>>> +    if (virtio_vdev_has_feature(vdev, VIRTIO_F_RING_PACKED)) {
>>> +        return sizeof(struct VRingPackedDescEvent);
>>> +    } else {
>>> +        s = virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX) ? 2 : 0;
>>> +        return offsetof(VRingAvail, ring) +
>>> +            sizeof(uint16_t) * vdev->vq[n].vring.num + s;
>> I tend to move this to an independent patch.
> You mean this two functions?
>
> Wei
>

I mean moving the adding of event to get_avail()/get_used().

Thanks