Re: [Xen-devel] [PATCH 5/5] just realized that it's broken

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

Fortunately I think it can be got rid of and probably at little or no
performance cost. I will take a look maybe next week.

 -- Keir

On 30/01/2009 10:48, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

> This patch was moving the cpumask out of struct page_info into the page
> itself, but I just realized that this it not valid, since the purpose of the
> mask
> is to avoid a later TLB flush, hence the base assumption is that the page
> might still be in the TLB of some CPU, thus making it possible for a mis-
> behaved guest to still write to that page.
> 
> Sorry for the mis-numbering,
> Jan
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel