microblaze: Fix _interrupt function
Save instructions by using delay slot and
clear UMS only if kernel comes from user space.
Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S
index 4c06e1a..f4fda85 100644
--- a/arch/microblaze/kernel/entry.S
+++ b/arch/microblaze/kernel/entry.S
@@ -747,15 +747,13 @@
swi r0, r1, PTO + PT_MODE;
lwi r11, r0, TOPHYS(PER_CPU(ENTRY_SP));
swi r11, r1, PTO+PT_R1;
+ clear_ums;
2:
lwi CURRENT_TASK, r0, TOPHYS(PER_CPU(CURRENT_SAVE));
tovirt(r1,r1)
- addik r5, r1, PTO;
- set_vms;
- addik r11, r0, do_IRQ;
addik r15, r0, irq_call;
-irq_call:rtbd r11, 0;
- nop;
+irq_call:rtbd r0, do_IRQ;
+ addik r5, r1, PTO;
/* MS: we are in virtual mode */
ret_from_irq: