Re: [kvm-devel] mmu notifiers

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

On Sun, 13 Jan 2008, Avi Kivity wrote:

> I was just explaining how kvm shares memory among guests (which does not
> require mmu notifiers); if you have some other configuration that can benefit
> from mmu notifiers, then, well, great.

I think you have two page tables pointing to the same memory location 
right (not to page structs but two ptes)? Without a mmu notifier the pages 
in this memory range cannot be evicted because otherwise ptes of the other 
instance will point to a page that is now used for a different purpose.