[PATCH 05/14] powerpc/64s/exception: machine check pseries should always run the early handler

Nicholas Piggin npiggin at gmail.com
Wed Jul 3 17:54:35 AEST 2019

Now that pseries with fwnmi registered runs the early machine check
handler, there is no good reason to special case the non-fwnmi case
and skip the early handler. Reducing the code and number of paths is
a top priority for asm code, it's better to handle this in C where
possible (and the pseries early handler is a no-op if fwnmi is not

Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
 arch/powerpc/kernel/exceptions-64s.S | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 0186a44bb981..a69ceb28cf4c 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -934,11 +934,7 @@ EXC_COMMON_BEGIN(system_reset_common)
 EXC_REAL_BEGIN(machine_check, 0x200, 0x100)
 	b	machine_check_common_early
-	b	machine_check_pSeries_0
 EXC_REAL_END(machine_check, 0x200, 0x100)
 EXC_VIRT_NONE(0x4200, 0x100)

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