1 files changed, 27 insertions, 17 deletions

diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
index 9e5e39cea821..677871f1b37c 100644
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -15,6 +15,7 @@
 #include "asm/mmu.h"
 #include "asm/pgalloc.h"
 #include "asm/pgtable.h"
+#include "asm/ldt.h"
 #include "os.h"
 #include "skas.h"
 
@@ -74,13 +75,12 @@ static int init_stub_pte(struct mm_struct *mm, unsigned long proc,
 
 int init_new_context_skas(struct task_struct *task, struct mm_struct *mm)
 {
-        struct mm_struct *cur_mm = current->mm;
-        struct mm_id *cur_mm_id = &cur_mm->context.skas.id;
-        struct mm_id *mm_id = &mm->context.skas.id;
+        struct mmu_context_skas *from_mm = NULL;
+        struct mmu_context_skas *to_mm = &mm->context.skas;
         unsigned long stack = 0;
-        int from, ret = -ENOMEM;
+        int from_fd, ret = -ENOMEM;
 
-        if(!proc_mm || !ptrace_faultinfo){
+        if(skas_needs_stub){
                 stack = get_zeroed_page(GFP_KERNEL);
                 if(stack == 0)
                         goto out;
@@ -102,33 +102,43 @@ int init_new_context_skas(struct task_struct *task, struct mm_struct *mm)
 
                 mm->nr_ptes--;
         }
-        mm_id->stack = stack;
+
+        to_mm->id.stack = stack;
+        if(current->mm != NULL && current->mm != &init_mm)
+                from_mm = &current->mm->context.skas;
 
         if(proc_mm){
-                if((cur_mm != NULL) && (cur_mm != &init_mm))
-                        from = cur_mm_id->u.mm_fd;
-                else from = -1;
+                if(from_mm)
+                        from_fd = from_mm->id.u.mm_fd;
+                else from_fd = -1;
 
-                ret = new_mm(from, stack);
+                ret = new_mm(from_fd, stack);
                 if(ret < 0){
                         printk("init_new_context_skas - new_mm failed, "
                                "errno = %d\n", ret);
                         goto out_free;
                 }
-                mm_id->u.mm_fd = ret;
+                to_mm->id.u.mm_fd = ret;
         }
         else {
-                if((cur_mm != NULL) && (cur_mm != &init_mm))
-                        mm_id->u.pid = copy_context_skas0(stack,
-                                                          cur_mm_id->u.pid);
-                else mm_id->u.pid = start_userspace(stack);
+                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(mm_id->stack != 0)
-                free_page(mm_id->stack);
+        if(to_mm->id.stack != 0)
+                free_page(to_mm->id.stack);
  out:
         return ret;
 }