Re: [XenAccess-devel] What's allocated on top 1M region of domU?

[Bryan D. P. <br...@th...>]

> Now, I'm succeeded read and writing almost of the memory. But
> It fails when I try to access top 1M region and some bit regions.
> To be precise, xc_map_foreign_range() of libxc returns error code 14.

This is where Xen locates itself.  So that would explain why it is not
letting you map it.  The rest of the guest memory should be laid out
as you would expect for whatever operating system you are looking at.


> #and , Can I get a document about memory allocation of dom0 and DomU
> somewhere?

I'm not sure if I understand this question.  If you are curious about
how Xen allocates the memory, then I don't know of any good
documentation on that.  If you are curious about how the guest OS uses
its memory, then you can check out a reference book about the
operating system (e.g., Windows Internals or Understanding the Linux
Kernel).

-bryan


-- 
Bryan D. Payne
Graduate Student, Computer Science
Georgia Tech Information Security Center
http://www.bryanpayne.org