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-rw-r--r--arch/arm64/kernel/process.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 659ae8094ed5..c8f7d98d8cb9 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -360,6 +360,8 @@ __notrace_funcgraph struct task_struct *__switch_to(struct task_struct *prev,
/*
* Complete any pending TLB or cache maintenance on this CPU in case
* the thread migrates to a different CPU.
+ * This full barrier is also required by the membarrier system
+ * call.
*/
dsb(ish);