Shared VM address range across processes

[Rao, Nikhil]

Hi, 

 

I want to map device memory into the same virtual address range in
multiple processes, this means I would have to add a vm_map_entry per
address range in every process, since the list of processes can be
potentially huge .. Is it allowed to point to the same list of
vm_map_entrys from multiple vm_spaces ? BSD3 had a field in the
vm_map_entry that could be a share map - would it be an idea that I
could reuse ?

 

Nikhil