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-rw-r--r--arch/s390/include/asm/mmu_context.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index 87a84fc59fc3..5dc49c467319 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -76,7 +76,10 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
{
int cpu = smp_processor_id();
- S390_lowcore.user_asce = next->context.asce;
+ if (next == &init_mm)
+ S390_lowcore.user_asce = s390_invalid_asce;
+ else
+ S390_lowcore.user_asce = next->context.asce;
cpumask_set_cpu(cpu, &next->context.cpu_attach_mask);
/* Clear previous user-ASCE from CR7 */
__ctl_load(s390_invalid_asce, 7, 7);