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Diffstat (limited to 'arch/arm64/kernel/entry.S')
-rw-r--r--arch/arm64/kernel/entry.S29
1 files changed, 8 insertions, 21 deletions
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index e1166145ca29..39ac630d83de 100644
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -288,6 +288,8 @@ el1_dbg:
/*
* Debug exception handling
*/
+ cmp x24, #ESR_EL1_EC_BRK64 // if BRK64
+ cinc x24, x24, eq // set bit '0'
tbz x24, #0, el1_inv // EL1 only
mrs x0, far_el1
mov x2, sp // struct pt_regs
@@ -309,15 +311,12 @@ el1_irq:
#ifdef CONFIG_TRACE_IRQFLAGS
bl trace_hardirqs_off
#endif
+
+ irq_handler
+
#ifdef CONFIG_PREEMPT
get_thread_info tsk
ldr w24, [tsk, #TI_PREEMPT] // get preempt count
- add w0, w24, #1 // increment it
- str w0, [tsk, #TI_PREEMPT]
-#endif
- irq_handler
-#ifdef CONFIG_PREEMPT
- str w24, [tsk, #TI_PREEMPT] // restore preempt count
cbnz w24, 1f // preempt count != 0
ldr x0, [tsk, #TI_FLAGS] // get flags
tbz x0, #TIF_NEED_RESCHED, 1f // needs rescheduling?
@@ -507,22 +506,10 @@ el0_irq_naked:
#ifdef CONFIG_TRACE_IRQFLAGS
bl trace_hardirqs_off
#endif
- get_thread_info tsk
-#ifdef CONFIG_PREEMPT
- ldr w24, [tsk, #TI_PREEMPT] // get preempt count
- add w23, w24, #1 // increment it
- str w23, [tsk, #TI_PREEMPT]
-#endif
+
irq_handler
-#ifdef CONFIG_PREEMPT
- ldr w0, [tsk, #TI_PREEMPT]
- str w24, [tsk, #TI_PREEMPT]
- cmp w0, w23
- b.eq 1f
- mov x1, #0
- str x1, [x1] // BUG
-1:
-#endif
+ get_thread_info tsk
+
#ifdef CONFIG_TRACE_IRQFLAGS
bl trace_hardirqs_on
#endif