Re: [Qemu-devel] linux guests and ksm performance

[Javier Guerra Giraldez]

On Thu, Feb 23, 2012 at 11:42 AM, Stefan Hajnoczi <address@hidden> wrote:
> The other approach is a memory page "discard" mechanism - which
> obviously requires more code changes than zeroing freed pages.
>
> The advantage is that we don't take the brute-force and CPU intensive
> approach of zeroing pages.  It would be like a fine-grained ballooning
> feature.

(disclaimer: i don't know the code, i'm just guessing)

does KVM emulate the MMU? if so, is there any 'unmap page' primitive?

-- 
Javier