|
|
CVSROOT: /cvs
Module name: src
Changes by: miod@xxxxxxxxxxxxxxx 2008/06/09 14:30:25
Modified files:
share/man/man9 : uvm.9
sys/uvm : uvm.h uvm_extern.h uvm_map.c
usr.sbin/procmap: procmap.c
Log message:
Define a new flag, UVM_FLAG_HOLE, for uvm_map to create a vm_map_entry of
a new etype, UVM_ET_HOLE, meaning it has no backend.
UVM_ET_HOLE entries (which should be created as UVM_PROT_NONE and with
UVM_FLAG_NOMERGE and UVM_FLAG_HOLE) are skipped in uvm_unmap_remove(), so
that pmap_{k,}remove() is not called on the entry.
This is intended to save time, and behave better, on pmaps with MMU holes
at process exit time.
ok art@, kettenis@ provided feedback as well.
|
|