hiro writes: > > Dealing with the security issues isn't trivial
> what security issues? Passing protocol buffer like objects around user space, that might affect how the kernel talks to hardware. E.g. IPsec offload into hardware. You don't want user-space messing with that sort of context, but you want to tag it with the data buffer as it gets passed up and down through the user/kernel gate. Practical page flipping needs a kernel-read-only context attached to the non-kernel user data part of the page. A quick solution is to pair pages, one half of which the kernel owns, the other being the data payload. But that't just a start. And that's all I'm saying: this might be an approach to a better/faster I/O paradigm, but it needs interested people to explore it ... --lyndon
