On Sun, 2007-04-08 at 08:36 +0300, Avi Kivity wrote: > Rusty Russell wrote: > > Hi Avi, > > > > I don't think you've thought about this very hard. The receive copy is > > completely independent with whether the packet is going to the guest via > > a kernel driver or via userspace, so not relevant. > > > > A packet received in the kernel cannot be made available to userspace in > a safe manner without a copy, as it will not be aligned with page > boundaries, so userspace cannot examine the packet until after one copy > has occured.
Hi Avi! I'm a little puzzled by your response. Hmm... lguest's userspace network frontend does exactly as many copies as Ingo's in-host-kernel code. One from the Guest, one to the Guest. Does that clarify? Rusty. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html