Re: [kvm-devel] mmu notifiers

[Christoph L. <cla...@sg...>]

On Tue, 15 Jan 2008, Avi Kivity wrote:

> > Duh. Impossible. Two instances of Linux cannot share page structs. So how
> > are you doing this? Or is this just an idea?
> 
> I was describing one Linux host running two guest instances.  The page structs
> are in the host, so they are shared by mmap().

Ahh.. Okay I was talking about a guest exporting its memory to another 
guest.
 
> kvm userspace is just an ordinary host process, it can mmap() any file it
> likes and then assign that virtual memory range to the guest (as guest
> physical memory).

But then the guest does not have its own page struct to manage the memory.