Xen users - Nov 2008 - xen:domU - boot from memory behind PCI device

Hey All,
              if I want to allocate memory for a domainU from memory behind a
PCI device and NOT from the xen allocation pool,
How to go about it??

common/memory.c does have a populate_physmap() function which does the memory
allocation for all domain where,

if (d->is_privilaged) { 
              do normal memory allocation
}
else {
           @DOMU: take memory from behind pci device
}

could be used to seperate the domain0 and domainU memory allocation process.

@DOMU - how to convert the machine addresses behind the pci to pages for
domainU?
               
Can anyone help me solve this and boot a domainU from behind a pci device (by
allocating memory from behind the pci device)..

Thanks in Advance,
Dinesh C



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