diff --git a/cpu-exec.c b/cpu-exec.c
index 89bf8b8..7c056d4 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -904,7 +904,7 @@
         /* we restore the process signal mask as the sigreturn should
            do it (XXX: use sigsetjmp) */
         sigprocmask(SIG_SETMASK, old_set, NULL);
-        raise_exception_err(EXCP0E_PAGE, env->error_code);
+        raise_exception_err(env->exception_index, env->error_code);
     } else {
         /* activate soft MMU for this block */
         env->hflags |= HF_SOFTMMU_MASK;
diff --git a/target-i386/helper.c b/target-i386/helper.c
index 6939cb7..5c1d6cd 100644
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -3478,9 +3478,9 @@
             }
         }
         if (retaddr)
-            raise_exception_err(EXCP0E_PAGE, env->error_code);
+            raise_exception_err(env->exception_index, env->error_code);
         else
-            raise_exception_err_norestore(EXCP0E_PAGE, env->error_code);
+            raise_exception_err_norestore(env->exception_index, env->error_code);
     }
     env = saved_env;
 }
diff --git a/target-i386/helper2.c b/target-i386/helper2.c
index 678c941..cb896cb 100644
--- a/target-i386/helper2.c
+++ b/target-i386/helper2.c
@@ -566,6 +566,7 @@
     env->cr[2] = addr;
     env->error_code = (is_write << PG_ERROR_W_BIT);
     env->error_code |= PG_ERROR_U_MASK;
+    env->exception_index = EXCP0E_PAGE;
     return 1;
 }
 
@@ -620,8 +621,9 @@
             /* test virtual address sign extension */
             sext = (int64_t)addr >> 47;
             if (sext != 0 && sext != -1) {
-                error_code = 0;
-                goto do_fault;
+                env->error_code = 0;
+                env->exception_index = EXCP0D_GPF;
+                return 1;
             }
             
             pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & 
@@ -862,6 +864,7 @@
         (env->cr[4] & CR4_PAE_MASK))
         error_code |= PG_ERROR_I_D_MASK;
     env->error_code = error_code;
+    env->exception_index = EXCP0E_PAGE;
     return 1;
 }