[Xen-devel] Re: How to intercept interrupts from guest domains

[Mads Bergdal <mbergdal@xxxxxxxxx>]

Keir Fraser wrote:
> On 19/9/06 10:14, "Mads Bergdal" <mbergdal@xxxxxxxxx> wrote:
>
> > I am writing my master thesis on virtualization with Xen. I am trying to
> >     intercept the hypercalls coming from the guest domains. More
> > specific I am trying to determine where in memory a guest domain is
> > writing. Does anyone have a hint on where in the code I should try to do
> > this?
> If you want to know where a guest is writing you need to do more than
> intercept hypercalls. You want to intercept memory accesses to, which would
> liekly mean you need to run on shadow pagetables and manipulate access
> permissions to trap on first access to a page.
>
>  -- Keir
Yes, that sounds reasonable. Do you know where in the code this could be 
achieved?
Mads


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