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powerpc/64s/exception: machine check pseries should always run the early handler 

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
registered).

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-6-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2019-08-02 20:56:30 +10:00 committed by Michael Ellerman
parent fe9d482b1d
commit b5c27f7c56
1 changed files with 0 additions and 4 deletions
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arch/powerpc/kernel/exceptions-64s.S
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@ -934,11 +934,7 @@ EXC_COMMON_BEGIN(system_reset_common)
EXC_REAL_BEGIN(machine_check, 0x200, 0x100)
EXCEPTION_PROLOG_0 PACA_EXMC
BEGIN_FTR_SECTION
b machine_check_common_early
FTR_SECTION_ELSE
b machine_check_pSeries_0
ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE)
EXC_REAL_END(machine_check, 0x200, 0x100)
EXC_VIRT_NONE(0x4200, 0x100)
TRAMP_REAL_BEGIN(machine_check_common_early)