[Xen-devel] Mapping foreign frames from dom0

[Julian Stecklina <der_julian@xxxxxx>]

Hello,

I am hacking on a Mini-OS that is able to run as domain 0 and is able to 
start a guest (another Mini-OS for now). I was able to get a memory 
allocated to the guest and am now trying to build its pagetable and 
after that copy the kernel to the right places. The problem is:
Given a machine frame number from a memory frame of the guest, how do I 
conceptionally map this into dom0's address space? I followed the code 
path from xc_map_foreign_range to some obscure pagetable updates in the 
Linux kernel, but am still unable to make heads or tails of it.
Any help is appreciated.

Regards,
Julian


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