sparc64: Reschedule KGDB capture to a software interrupt.

Otherwise it might interrupt switch_to() midstream and use
half-cooked register window state.

Reported-by: Chris Torek <chris.torek@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/sparc/kernel/ttable.S b/arch/sparc/kernel/ttable.S
index d9bdfb9d5c18..76d837fc47d3 100644
--- a/arch/sparc/kernel/ttable.S
+++ b/arch/sparc/kernel/ttable.S
@@ -64,7 +64,12 @@ tl0_irq6:	TRAP_IRQ(smp_call_function_single_client, 6)
 tl0_irq6:       BTRAP(0x46)
 #endif
 tl0_irq7:       TRAP_IRQ(deferred_pcr_work_irq, 7)
-tl0_irq8:       BTRAP(0x48) BTRAP(0x49)
+#ifdef CONFIG_KGDB
+tl0_irq8:       TRAP_IRQ(smp_kgdb_capture_client, 8)
+#else
+tl0_irq8:       BTRAP(0x48)
+#endif
+tl0_irq9:       BTRAP(0x49)
 tl0_irq10:      BTRAP(0x4a) BTRAP(0x4b) BTRAP(0x4c) BTRAP(0x4d)
 tl0_irq14:      TRAP_IRQ(timer_interrupt, 14)
 tl0_irq15:      TRAP_NMI_IRQ(perfctr_irq, 15)