Re: [Xen-devel] how to tell if a DomU (HVM) touches a specific address

[Gianluca Guida <gianluca.guida@xxxxxxxxxxxxx>]

On Sat, Jun 20, 2009 at 2:25 PM, James
Harper<james.harper@xxxxxxxxxxxxxxxx> wrote:
> I need to know if my Windows DomU attempts to read or write (or even
> map) a certain physical address. Is there a way I could do this? Maybe
> via xentrace?

If you don't want to modify the Shadow/HAP level, an idea would be, in
case it's physical RAM, to create a dummy MMIO device. This way it
will trap at every access to the memory you're interested and be able
to look at it via xentrace/printk/etc.

Thanks,
Gianluca

-- 
It was a type of people I did not know, I found them very strange and
they did not inspire confidence at all. Later I learned that I had been
introduced to electronic engineers.
                                                  E. W. Dijkstra

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