Is it possible for a kext to overload system calls (or Mach traps) in Darwin? Is there any example code for doing this available? I have another module (an IOKit driver) which wires memory for OS-bypass communications for unbounded amounts of time. If the user-level application misbehaves and attempts to free this wired memory prior to unwiring it, the VM system blocks in vm_deallocate() waiting for the memory to be unwired. The IOKit driver has no idea the VM system wants the memory to be unwired. Deadlock ensues. So I'd like to snoop vm_deallocate() calls & catch those which attempt free memory that the IOKit driver has wired down so that I can get the driver to unwire the memory (and do the required cleanup so that no more DMAs happen to that region, of course). What would be ideal would be an optional callback in the vm_map_entry_t that could be called in vm_map_delete(), so that the VM system can request that the memory be unwired & not simply deadlock. Thanks, Drew _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.