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powerpc/64s: Fix mce accounting for powernv

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On 64-bit Book3s, when we're in HV mode, we have already counted the
machine check exception in machine_check_early().

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Use IS_ENABLED() rather than an #ifdef]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin 2017-08-01 22:00:51 +10:00 committed by Michael Ellerman
parent 1a367063ca
commit f886f0f6e0
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/kernel/traps.c
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@ -755,7 +755,9 @@ void machine_check_exception(struct pt_regs *regs)
enum ctx_state prev_state = exception_enter();
int recover = 0;
__this_cpu_inc(irq_stat.mce_exceptions);
/* 64s accounts the mce in machine_check_early when in HVMODE */
if (!IS_ENABLED(CONFIG_PPC_BOOK3S_64) || !cpu_has_feature(CPU_FTR_HVMODE))
__this_cpu_inc(irq_stat.mce_exceptions);
add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);