On Thu, 28 Mar 2024 16:05:02 +0800, Jason Wang <jasowang@xxxxxxxxxx> wrote: > On Wed, Mar 27, 2024 at 7:14 PM Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx> wrote: > > > > Now, the virtio core can set the premapped mode by find_vqs(). > > If the premapped can be enabled, the dma array will not be > > allocated. So virtio-net use the api of find_vqs to enable the > > premapped. > > > > Judge the premapped mode by the vq->premapped instead of saving > > local variable. > > > > Signed-off-by: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx> > > --- > > I wonder what's the reason to keep a fallback when premapped is not enabled? Rethink this. I think you are right. We can remove the fallback. Because we have the virtio dma apis that wrap all the cases. So I will remove the fallback from the virtio-net in next version. But we still need to export the premapped to the drivers. Because we can enable the AF_XDP only when premapped is true. Thanks > > Thanks >
