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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2015-07-09 14:13:25 +0200
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2015-07-09 14:13:25 +0200
commiteaee9424a120c289abc3eeeff331cb0d45efe971 (patch)
treee0bb7aec9484943d15277c67292d5036a9702569 /kern/startup.c
parent1e0429e5f39ec219cbef3af2752528b8a29bc1be (diff)
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.
Diffstat (limited to 'kern/startup.c')
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