linux-kernel - Re: [patch 5/5] PTP: add kvm PTP driver

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Message-ID: <829c8848-b022-5d39-f552-dc439a22b18a@redhat.com>
Date:   Fri, 20 Jan 2017 18:11:31 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Marcelo Tosatti <mtosatti@...hat.com>,
        Radim Krcmar <rkrcmar@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Richard Cochran <richardcochran@...il.com>,
        Miroslav Lichvar <mlichvar@...hat.com>
Subject: Re: [patch 5/5] PTP: add kvm PTP driver



On 20/01/2017 16:00, Marcelo Tosatti wrote:
>>> +	system_counter->cs = get_kvmclock_cs();
>>
>> Can't we use clocksource_tsc and just pass the tsc without kvmclock in
>> the middle?
> 
> No, it has to be the kvmclock value.

And that would be too tricky anyway. :)

Paolo