On Sat, Sep 30, 2017 at 12:01 AM, Michael S. Tsirkin <mst@xxxxxxxxxx> wrote: > intel idle driver does not DTRT when running within a VM: > when going into a deep power state, the right thing to > do is to exit to hypervisor rather than to keep polling > within guest using mwait. > > Currently the solution is just to exit to hypervisor each time we go > idle - this is why kvm does not expose the mwait leaf to guests even > when it allows guests to do mwait. > > But that's not ideal - it seems better to use the idle driver to guess > when will the next interrupt arrive. The idle driver alone is not sufficient for that, though. Thanks, Rafael
