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authorRichard Weinberger <richard@nod.at>2015-03-18 21:31:27 +0100
committerRichard Weinberger <richard@nod.at>2015-04-13 21:00:53 +0200
commitd0b5e15f0c0fdd759dd3dd48dc2dc2e7199e0da0 (patch)
tree7b833b85c0e2eabf6b38d8b94875b430554afae7 /arch/um/kernel/reboot.c
parentaaeac66b1a02d399ec8ee63e8d617c1d601ea353 (diff)
downloadlinux-stericsson-d0b5e15f0c0fdd759dd3dd48dc2dc2e7199e0da0.tar.gz
um: Remove SKAS3/4 support
Before we had SKAS0 UML had two modes of operation TT (tracing thread) and SKAS3/4 (separated kernel address space). TT was known to be insecure and got removed a long time ago. SKAS3/4 required a few (3 or 4) patches on the host side which never went mainline. The last host patch is 10 years old. With SKAS0 mode (separated kernel address space using 0 host patches), default since 2005, SKAS3/4 is obsolete and can be removed. Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/kernel/reboot.c')
-rw-r--r--arch/um/kernel/reboot.c35
1 files changed, 14 insertions, 21 deletions
diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c
index ced8903921ae..9bdf67a092a5 100644
--- a/arch/um/kernel/reboot.c
+++ b/arch/um/kernel/reboot.c
@@ -15,28 +15,21 @@ void (*pm_power_off)(void);
static void kill_off_processes(void)
{
- if (proc_mm)
- /*
- * FIXME: need to loop over userspace_pids
- */
- os_kill_ptraced_process(userspace_pid[0], 1);
- else {
- struct task_struct *p;
- int pid;
-
- read_lock(&tasklist_lock);
- for_each_process(p) {
- struct task_struct *t;
-
- t = find_lock_task_mm(p);
- if (!t)
- continue;
- pid = t->mm->context.id.u.pid;
- task_unlock(t);
- os_kill_ptraced_process(pid, 1);
- }
- read_unlock(&tasklist_lock);
+ struct task_struct *p;
+ int pid;
+
+ read_lock(&tasklist_lock);
+ for_each_process(p) {
+ struct task_struct *t;
+
+ t = find_lock_task_mm(p);
+ if (!t)
+ continue;
+ pid = t->mm->context.id.u.pid;
+ task_unlock(t);
+ os_kill_ptraced_process(pid, 1);
}
+ read_unlock(&tasklist_lock);
}
void uml_cleanup(void)