[SCM] GNU Mach branch, master, updated. v1.5-46-geaee942

[Samuel Thibault]

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- Log -----------------------------------------------------------------
commit eaee9424a120c289abc3eeeff331cb0d45efe971
Author: Samuel Thibault <address@hidden>
Date:   Thu Jul 9 14:13:25 2015 +0200

    Allow non-privileged tasks to wire 64KiB task memory
    
    * doc/mach.texi (vm_wire): Document that the host port does not have to be
    privileged.
    * include/mach/mach_hosts.defs (vm_wire): Use mach_port_t instead of
    host_priv_t.
    * vm/vm_map.h (vm_map): Add user_wired field.
    * vm/vm_map.c (vm_map_setup): Initialize user_wired field to 0.
    (vm_map_pageable_common, vm_map_entry_delete, vm_map_copy_overwrite,
    vm_map_copyout_page_list, vm_map_copyin_page_list): When switching
    user_wired_count field of entry between 0 and non-0, accumulate the
    corresponding size into the user_wired field of map.
    * vm/vm_user.c (vm_wire): Turn host parameter into port parameter, and
    inline a version of convert_port_to_host_priv which records whether the host
    port is privileged or not.  When it is not privileged, check whether
    the additional amount to user_wired will overcome 64KiB.

-----------------------------------------------------------------------

Summary of changes:
 doc/mach.texi               |   13 +++++++------
 include/mach/mach_host.defs |    2 +-
 vm/vm_map.c                 |   15 +++++++++++++++
 vm/vm_map.h                 |    1 +
 vm/vm_user.c                |   27 ++++++++++++++++++++++++---
 5 files changed, 48 insertions(+), 10 deletions(-)


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