Messages in this thread | | | From | "Rafael J. Wysocki" <> | Date | Sat, 30 Sep 2017 01:21:43 +0200 | Subject | Re: [PATCH RFC hack dont apply] intel_idle: support running within a VM |
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On Sat, Sep 30, 2017 at 12:01 AM, Michael S. Tsirkin <mst@redhat.com> 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
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