Merge pull request #9215 from liamwhite/swordfight

Ensure correctness of atomic store ordering

1 files changed, 3 insertions, 0 deletions

diff --git a/src/core/hle/kernel/k_scheduler_lock.h b/src/core/hle/kernel/k_scheduler_lock.h
index 73314b45e..129d60472 100644
--- a/src/core/hle/kernel/k_scheduler_lock.h
+++ b/src/core/hle/kernel/k_scheduler_lock.h
@@ -60,6 +60,9 @@ public:
 
         // Release an instance of the lock.
         if ((--lock_count) == 0) {
+            // Perform a memory barrier here.
+            std::atomic_thread_fence(std::memory_order_seq_cst);
+
             // We're no longer going to hold the lock. Take note of what cores need scheduling.
             const u64 cores_needing_scheduling =
                 SchedulerType::UpdateHighestPriorityThreads(kernel);