diff options
| author | Diego Nieto Cid <dnietoc@gmail.com> | 2025-09-21 21:23:42 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2025-09-22 00:51:29 +0200 |
| commit | 9ae4d99c1d1e7c9c0977cebb4df9b86fa92cca94 (patch) | |
| tree | 62e1baaaefde974b943755eb8771ad0a2ca182f4 /kern | |
| parent | 1269629d90b28a23ef9742645cfaf657ea3165bb (diff) | |
* 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.dnietoc@gmail.com>
Diffstat (limited to 'kern')
| -rw-r--r-- | kern/task.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kern/task.c b/kern/task.c index bd57ca2a..e78e856f 100644 --- a/kern/task.c +++ b/kern/task.c @@ -126,6 +126,11 @@ task_create_kernel( trunc_page(VM_MAX_USER_ADDRESS)); if (new_task->map == VM_MAP_NULL) pmap_destroy(new_pmap); + else if (parent_task != TASK_NULL) { + vm_map_lock_read(parent_task->map); + vm_map_copy_limits(new_task->map, parent_task->map); + vm_map_unlock_read(parent_task->map); + } } } if (new_task->map == VM_MAP_NULL) { |