[bikeshed] Re: Qemu Memory issue
- From: "WALTER LITWINCZYK (RIT Student)" <wtl4112@xxxxxxx>
- To: Christopher Hossenlopp <chris@xxxxxxxxxxxxxxxxxxx>
- Date: Wed, 23 May 2012 23:02:32 -0400
To follow up on the heap question:
Processes don't really have a notion of heap right now. They're given the
bare minimum. So if you want to map something into a user process the
easier way is have a system call and then call __virt_map_page() to where
you want to map stuff and that should map it into whatever process called
it.
Otherwise if you want to map into another process from the current process
you'd have to search all the processes and then call
__virt_switch_page_directory() with the pcb->page_directory field of the
pcb you found and then do the mapping, don't forget to map back with
__virt_switch_page_directory(_current->page_directory) before you return
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