On Thu, May 03, 2018 at 04:38:23PM +0300, Alexander Shishkin wrote: > On Thu, May 03, 2018 at 02:50:12PM +0200, Paolo Bonzini wrote: > > And you still need the module parameter to decide > > whether the host is _allowed_ to cause incomplete traces in the guest. > > Or rather a parameter to decide who wins in case both host and guest want > to trace the guest. That's arguably better than having different versions of > PT in the guest depending on a module parameter setting. Yes, that sounds like a much better approach.