+ struct mmu_context_skas *from_mm = NULL;
+ struct mmu_context_skas *to_mm = &mm->context.skas;
+ unsigned long stack = 0;
+ int ret = -ENOMEM;
+
+ if(skas_needs_stub){
+ stack = get_zeroed_page(GFP_KERNEL);
+ if(stack == 0)
+ goto out;
+
+ /* This zeros the entry that pgd_alloc didn't, needed since
+ * we are about to reinitialize it, and want mm.nr_ptes to
+ * be accurate.
+ */
+ mm->pgd[USER_PTRS_PER_PGD] = __pgd(0);
+
+ ret = init_stub_pte(mm, CONFIG_STUB_CODE,
+ (unsigned long) &__syscall_stub_start);
+ if(ret)
+ goto out_free;
+
+ ret = init_stub_pte(mm, CONFIG_STUB_DATA, stack);
+ if(ret)
+ goto out_free;
+
+ mm->nr_ptes--;
+ }
+
+ to_mm->id.stack = stack;
+ if(current->mm != NULL && current->mm != &init_mm)
+ from_mm = ¤t->mm->context.skas;
+
+ if(proc_mm){
+ ret = new_mm(stack);
+ if(ret < 0){
+ printk("init_new_context_skas - new_mm failed, "
+ "errno = %d\n", ret);
+ goto out_free;
+ }
+ to_mm->id.u.mm_fd = ret;
+ }
+ else {
+ if(from_mm)
+ to_mm->id.u.pid = copy_context_skas0(stack,
+ from_mm->id.u.pid);
+ else to_mm->id.u.pid = start_userspace(stack);
+ }
+
+ ret = init_new_ldt(to_mm, from_mm);
+ if(ret < 0){
+ printk("init_new_context_skas - init_ldt"
+ " failed, errno = %d\n", ret);
+ goto out_free;
+ }
+
+ return 0;
+
+ out_free:
+ if(to_mm->id.stack != 0)
+ free_page(to_mm->id.stack);
+ out:
+ return ret;