A vDSO can't transfer execution to another thread. Theoretically a vDSO could manipulate a thread's scheduling context to move it up or down a queue, but it cou

A vDSO can't transfer execution to another thread. Theoretically a vDSO could manipulate a thread's scheduling context to move it up or down a queue, but it couldn't force immediate execution of another thread, couldn't suspend the current thread, and definitely couldn't do both those things simultaneously, which is what the patch does.