On Fri, 11 Sep 2015, Waiman Long wrote:
@@ -46,7 +46,7 @@ static inline bool virt_queued_spin_lock(struct qspinlock *lock) if (!static_cpu_has(X86_FEATURE_HYPERVISOR)) return false;- while (atomic_cmpxchg(&lock->val, 0, _Q_LOCKED_VAL) != 0) + while (atomic_cmpxchg_acquire(&lock->val, 0, _Q_LOCKED_VAL) != 0) cpu_relax();
This code has changed with Peter's recent ccas fix. And the whole virt_queued_spin_lock() thing will now be under pv configs. So this doesn't apply to native code anymore, so it looks like it should be dropped altogether. Thanks, Davidlohr -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
