On Thu, Aug 10, 2023 at 12:29:08PM +0200, Christian König wrote: > Am 10.08.23 um 03:57 schrieb Mina Almasry: > > Changes in RFC v2: > > ------------------ > > > > The sticking point in RFC v1[1] was the dma-buf pages approach we used to > > deliver the device memory to the TCP stack. RFC v2 is a proof-of-concept > > that attempts to resolve this by implementing scatterlist support in the > > networking stack, such that we can import the dma-buf scatterlist > > directly. > > Impressive work, I didn't thought that this would be possible that "easily". > > Please note that we have considered replacing scatterlists with simple > arrays of DMA-addresses in the DMA-buf framework to avoid people trying to > access the struct page inside the scatterlist. > > It might be a good idea to push for that first before this here is finally > implemented. > > GPU drivers already convert the scatterlist used to arrays of DMA-addresses > as soon as they get them. This leaves RDMA and V4L as the other two main > users which would need to be converted. Oh that would be a nightmare for RDMA. We need a standard based way to have scalable lists of DMA addresses :( > > 2. Netlink API (Patch 1 & 2). > > How does netlink manage the lifetime of objects? And access control.. Jason
