Hi all, Probably this is a stale question because I heard of we've already had some this kind of patches. I want to implement a zero-copy mechanism to transfer data between VMs. From what I've investigated, it's quite easy at sender side, because virtio is good at sharing data pages from VM to HOST; however, problem arises at receiver side, we have to invent a mechanism to share host pages to VM. There're two solutions I can think of, but I'm not sure if they really work: 1. modify the shadow page table of the receiver in the HOST, and notify the receiver, so that the receiver can access the data pages directly; 2. implement a pci-character device in receiver. Before the receiver is notified, HOST has to rearrange the data pages from sender, and set the base address space of that pci device. In this way, after receiver mapping the pci memory, it may access the data directly. folks, would you please help me make sure if the schemes work, better one? Thanks, Jay -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
