microblaze: Fix _user_exception function
Saving some instructions. Clear VMS bit if kernel comes
from kernel space.
Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
index e7abf74..4c06e1a 100644
--- a/arch/microblaze/kernel/entry.S
+++ b/arch/microblaze/kernel/entry.S
@@ -352,6 +352,7 @@
swi r0, r1, PTO + PT_MODE; /* Was in user-mode. */
lwi r11, r0, TOPHYS(PER_CPU(ENTRY_SP));
swi r11, r1, PTO+PT_R1; /* Store user SP. */
+ clear_ums;
2: lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE));
/* Save away the syscall number. */
swi r12, r1, PTO+PT_R0;
@@ -363,10 +364,8 @@
* register should point to the location where
* the called function should return. [note that MAKE_SYS_CALL uses label 1] */
- # Step into virtual mode.
- set_vms;
- addik r11, r0, 3f
- rtid r11, 0
+ /* Step into virtual mode */
+ rtbd r0, 3f
nop
3:
lwi r11, CURRENT_TASK, TS_THREAD_INFO /* get thread info */