Re: xvif(4) and kernel.org domU

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sun, Jun 29, 2008 at 01:56:16PM +0000, Jonathan A. Kollasch wrote:
> Well, to paraphrase a book excerpt:
> 
> Flipping is where ownership of pages changes between the two domains.
> Copying is when pages stay owned by their respective domains,
> and the hypervisor copies the data between the domain's pages.
> 
> It is said that flipping caused TLB churn which decreased performance.

Hum, I guess this is a feature that appeared in Xen 3.2. I don't remember
seeing anything like that in Xen 3.1.x

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--