On Tue, Mar 19, 2024 at 2:56 PM Michael S. Tsirkin <mst@xxxxxxxxxx> wrote: > > On Tue, Mar 12, 2024 at 11:35:47AM +0800, Xuan Zhuo wrote: > > As discussed: > > > > http://lore.kernel.org/all/CACGkMEvq0No8QGC46U4mGsMtuD44fD_cfLcPaVmJ3rHYqRZxYg@xxxxxxxxxxxxxx > > > > If the virtio is premapped mode, the driver should manage the dma info by self. > > So the virtio core should not store the dma info. We can release the memory used > > to store the dma info. > > > > For virtio-net xmit queue, if the virtio-net maintains the dma info, > > the virtio-net must allocate too much memory(19 * queue_size for per-queue), so > > we do not plan to make the virtio-net to maintain the dma info by default. The > > virtio-net xmit queue only maintain the dma info when premapped mode is enable > > (such as AF_XDP is enable). > > This landed when merge window was open already so I'm deferring this > to the next merge window, just to be safe. Jason can you review please? Will do. Thanks
