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-rw-r--r--arch/powerpc/include/asm/mmu_context.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h
index 475d1be39191..5c451140660a 100644
--- a/arch/powerpc/include/asm/mmu_context.h
+++ b/arch/powerpc/include/asm/mmu_context.h
@@ -72,7 +72,8 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk)
{
/* Mark this context has been used on the new CPU */
- cpumask_set_cpu(smp_processor_id(), mm_cpumask(next));
+ if (!cpumask_test_cpu(smp_processor_id(), mm_cpumask(next)))
+ cpumask_set_cpu(smp_processor_id(), mm_cpumask(next));
/* 32-bit keeps track of the current PGDIR in the thread struct */
#ifdef CONFIG_PPC32