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.

1 files changed, 1 insertions, 1 deletions

diff --git a/include/mach/mach_host.defs b/include/mach/mach_host.defs
index 6699a50..28439a0 100644
--- a/include/mach/mach_host.defs
+++ b/include/mach/mach_host.defs
@@ -296,7 +296,7 @@ routine host_reboot(
  *	[ To unwire the pages, specify VM_PROT_NONE. ]
  */
 routine	vm_wire(
-		host_priv	: host_priv_t;
+		host		: mach_port_t;
 		task		: vm_task_t;
 		address		: vm_address_t;
 		size		: vm_size_t;