linux-kernel - Re: [patch 3/3] PTP: add kvm PTP driver

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Date:   Sat, 14 Jan 2017 16:26:36 +0100
From:   Richard Cochran <richardcochran@...il.com>
To:     Radim Krcmar <rkrcmar@...hat.com>
Cc:     Marcelo Tosatti <mtosatti@...hat.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Miroslav Lichvar <mlichvar@...hat.com>
Subject: Re: [patch 3/3] PTP: add kvm PTP driver

On Fri, Jan 13, 2017 at 04:56:58PM +0100, Radim Krcmar wrote:
> > +static int __init ptp_kvm_init(void)
> > +{
> > +	if (!kvm_para_available())
> > +		return -ENODEV;
> > +
> > +	kvm_ptp_clock.caps = ptp_kvm_caps;
> > +
> > +	kvm_ptp_clock.ptp_clock = ptp_clock_register(&kvm_ptp_clock.caps, NULL);
> 
> It is a shame that the infrastructure uses polling when the guest could
> be notified on every host real time change, but this should be good
> enough.

This comment makes no sense at all.  What do you mean by "host real
time change"?

Thanks,
Richard