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commit 9ae4d99c1d1e7c9c0977cebb4df9b86fa92cca94
Author: Diego Nieto Cid <[email protected]>
Date: Sun Sep 21 21:23:42 2025 +0100
Implement per-task virtual memory limit
* doc/mach.texi: add a "Memory Limitations" section to document the new
interfaces.
* include/mach/gnumach.defs: (vm_set_size_limit) new routine
(vm_get_size_limit) likewise
* kern/task.c: (task_create_kernel) if parent_task is not null copy
virtual memory limit
* tests/test-vm.c: (test_vm_limit) add test for the new routines
* vm/vm_map.h: (struct vm_map) new fields size_none, size_cur_limit and
size_max_limit
(vm_map_find_entry) add new parameters cur_protection and max_protection
* vm/vm_map.c: (vm_map_setup) initialize new fields
(vm_map_enforce_limit) new function
(vm_map_copy_limits) new function
(vm_map_find_entry) add protection and max_protection parameters.
call limit enforcer function
(vm_map_enter) likewise
(vm_map_copyout) likewise
(vm_map_copyout_page_list) likewise
(vm_map_fork) copy parent limit to the new map and compute and set
size_none of the new map
* vm/vm_user.c: (vm_set_size_limit) new function
(vm_get_size_limit) likewise
* xen/grant.c: update call to vm_map_find_entry to pass protection
parameters
Message-ID:
<0b71f4f89b7cc2b159893a805480d7493d522d60.1758485757.git.dnie...@gmail.com>
-----------------------------------------------------------------------
Summary of changes:
doc/mach.texi | 29 +++++++++
include/mach/gnumach.defs | 34 +++++++++++
kern/task.c | 5 ++
tests/test-vm.c | 96 ++++++++++++++++++++++++++++++
vm/vm_kern.c | 22 +++----
vm/vm_map.c | 148 +++++++++++++++++++++++++++++++++++++++++++---
vm/vm_map.h | 15 ++++-
vm/vm_user.c | 69 +++++++++++++++++++++
xen/grant.c | 3 +-
9 files changed, 400 insertions(+), 21 deletions(-)
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