From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross
 timestamps infrastructure
Date: Fri, 20 Jan 2017 13:55:27 +0100
Message-ID: <48bb2650-ed00-ec07-31bf-8780d3ab5568@redhat.com>
References: <20170120122025.665985919@redhat.com>
 <20170120122503.746158230@redhat.com>
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Cc: Radim Krcmar <rkrcmar@redhat.com>,
        Richard Cochran <richardcochran@gmail.com>,
        Miroslav Lichvar <mlichvar@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>, kvm@vger.kernel.org,
        linux-kernel@vger.kernel.org
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On 20/01/2017 13:20, Marcelo Tosatti wrote:
>  kernel/time/timekeeping.c        |   79 +++++++++++++++++++++++++++++++++++++++

Why not leave this in drivers/ptp/ptp_chardev.c?

> +		if (ptp->info->emulate_ptp_sys_offset_mean) {
> +			err = emulate_ptp_sys_offset(ptp->info, sysoff, arg);
> +			break;
> +		}

I think this should be simply "if (!ptp->info->gettime64)" and,
likewise, there should be an emulation based getcrosststamp in
ptp_clock_gettime.

Paolo