On Tue, Feb 28, 2017 at 11:59:24AM +0800, Fengguang Wu wrote:
Here is another bisect result with a different call trace.
Is this a single processor VM without pre-emption? It's a busy spin
loop, so relies on the other thread being run to break the loop. That
cpu_relax() should become cond_resched()?
Chris Wilson, Intel Open Source Technology Centre