Re: How to intercept interrupts from guest domains

[Mads Bergdal <mbergdal@gmail.com>]

Keir Fraser wrote:
> On 19/9/06 10:14, "Mads Bergdal" <mbergdal@gmail.com> 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