[Xen-users] Xen Memory Management

[Jason Thomas <jethomas100@xxxxxxxxx>]

I understand that for HVM guests the Xen hypervisor creates shadow pages to monitor each guest's memory usage. Does the Dom0 have direct access to these memory spaces or does it just issue hypercalls to do the memory management? Does the Dom0 know about the memory mapping or just the Xen hypervisor? For example, Dom0 must have the ability to copy these pages for guest relocation, but does it do this copying of memory space through the Xen VMM (hypercalls) or is there any direct access by the Dom0? 

Jason
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