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-rw-r--r--arch/ppc/kernel/smp.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/ppc/kernel/smp.c b/arch/ppc/kernel/smp.c
index 43b8fc2ca591..becbfa397556 100644
--- a/arch/ppc/kernel/smp.c
+++ b/arch/ppc/kernel/smp.c
@@ -301,6 +301,10 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
/* Probe platform for CPUs: always linear. */
num_cpus = smp_ops->probe();
+
+ if (num_cpus < 2)
+ smp_tb_synchronized = 1;
+
for (i = 0; i < num_cpus; ++i)
cpu_set(i, cpu_possible_map);