Blackfin arch: fix bug - kernel with SMP patch can not bootup
The original code defined _exception_stack but not alloc space for the exception
stack. In exception, this area is over written by exception stack. Common kernel
luckly boot up, but SMP kernel stuck.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index ad40498..c6ae844 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -1555,7 +1555,8 @@
.bss
#endif
_exception_stack:
-.size _exception_stack, 1024 * 4
-.set _exception_stack_top, _exception_stack + 1024 * 4
-.size _exception_stack_top, 0
+ .rept 1024
+ .long 0
+ .endr
+_exception_stack_top:
#endif