[PATCH] x86_64: Remove useless KDB vector

It was set as an NMI, but the NMI bit always forces an interrupt
to end up at vector 2. So it was never used. Remove.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h
index b248930767e7..0df1715dee71 100644
--- a/include/asm-x86_64/hw_irq.h
+++ b/include/asm-x86_64/hw_irq.h
@@ -51,7 +51,8 @@ struct hw_interrupt_type;
 #define ERROR_APIC_VECTOR       0xfe
 #define RESCHEDULE_VECTOR       0xfd
 #define CALL_FUNCTION_VECTOR    0xfc
-#define KDB_VECTOR              0xfb    /* reserved for KDB */
+/* fb free - please don't readd KDB here because it's useless
+   (hint - think what a NMI bit does to a vector) */
 #define THERMAL_APIC_VECTOR     0xfa
 #define THRESHOLD_APIC_VECTOR   0xf9
 /* f8 free */