xtensa: nommu support

Add support for !CONFIG_MMU setups.

Signed-off-by: Johannes Weiner <jw@emlix.com>
Signed-off-by: Chris Zankel <chris@zankel.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/xtensa/kernel/vectors.S b/arch/xtensa/kernel/vectors.S
index eb2d7bb69ee0..74a7518faf16 100644
--- a/arch/xtensa/kernel/vectors.S
+++ b/arch/xtensa/kernel/vectors.S
@@ -309,6 +309,7 @@ ENTRY(_DoubleExceptionVector)
          * All other exceptions are unexpected and thus unrecoverable!
          */
 
+#ifdef CONFIG_MMU
         .extern fast_second_level_miss_double_kernel
 
 .Lksp:  /* a0: a0, a1: a1, a2: a2, a3: trashed, depc: depc, excsave: a3 */
@@ -319,6 +320,9 @@ ENTRY(_DoubleExceptionVector)
         bnez    a3, .Lunrecoverable
 1:      movi    a3, fast_second_level_miss_double_kernel
         jx      a3
+#else
+.equ    .Lksp,  .Lunrecoverable
+#endif
 
         /* Critical! We can't handle this situation. PANIC! */