From 5ff79a5ea69f8f5d1131064af9f8c9a8b1bc8266 Mon Sep 17 00:00:00 2001
From: Nicholas Piggin <npiggin@gmail.com>
Date: Fri, 2 Aug 2019 20:56:46 +1000
Subject: [PATCH] powerpc/64s/exception: remove 0xb00 handler

References: jsc#PM-1334 jsc#SLE-9246 jsc#SLE-9251
Patch-mainline: v5.4-rc1
Git-commit: 5ff79a5ea69f8f5d1131064af9f8c9a8b1bc8266

This vector is not used by any supported processor, and has been
implemented as an unknown exception going back to 2.6. There is
nothing special about 0xb00, so remove it like other unused
vectors.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-22-npiggin@gmail.com
Acked-by: Michal Suchanek <msuchanek@suse.de>
---
 arch/powerpc/kernel/exceptions-64s.S | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 4b685d894ba1..d9c953e419bf 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1564,10 +1564,8 @@ EXC_COMMON_ASYNC(doorbell_super_common, 0xa00, unknown_exception)
 #endif
 
 
-EXC_REAL(trap_0b, 0xb00, 0x100)
-EXC_VIRT(trap_0b, 0x4b00, 0x100, 0xb00)
-TRAMP_KVM(PACA_EXGEN, 0xb00)
-EXC_COMMON(trap_0b_common, 0xb00, unknown_exception)
+EXC_REAL_NONE(0xb00, 0x100)
+EXC_VIRT_NONE(0x4b00, 0x100)
 
 /*
  * system call / hypercall (0xc00, 0x4c00)
-- 
2.23.0