Hi Jens, I'm interested in the io_uring, and have a doubt about it. If I setup io_uring with IORING_REGISTER_BUFFERS, the kernel doesn't need copy data from user space to the kernel, right? Does it mean this is a zero-copy feature? >From the code, kernel directly get the userspace virtual address's pages and store them: 2475 pret = get_user_pages_longterm(ubuf, nr_pages, FOLL_WRITE, 2476 pages, vmas); -- Thanks and Best Regards, Feng Li(Alex)
