[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20141021082058.GB6808@netboy>
Date: Tue, 21 Oct 2014 10:20:58 +0200
From: Richard Cochran <richardcochran@...il.com>
To: Jeff Epler <jepler@...ythonic.net>
Cc: Thomas Shao <huishao@...rosoft.com>,
Thomas Gleixner <tglx@...utronix.de>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
LKML <linux-kernel@...r.kernel.org>,
"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
"olaf@...fle.de" <olaf@...fle.de>,
"apw@...onical.com" <apw@...onical.com>,
"jasowang@...hat.com" <jasowang@...hat.com>,
KY Srinivasan <kys@...rosoft.com>,
John Stultz <john.stultz@...aro.org>,
Richard Cochran <rcochran@...utronix.de>
Subject: Re: [PATCH v2 1/2] timekeeping: add EXPORT_SYMBOL_GPL for
do_adjtimex()
On Mon, Oct 20, 2014 at 11:02:13PM -0500, Jeff Epler wrote:
> It's interesting to imagine that a virtualization host could present a
> time service to the guest *userspace*, even when the guest is not
> otherwise exposed to the internet at large. This could take the form of
> an NTP server on a private network, or as an implementation of a time
> source directly usable by ntpd in the guest, for instance as an emulated
> serial port with synthetic NEMA GPS signal + PPS signal, for instance.
If the idea is to avoid bothering the guest user space, in order to be
convenient, then the host can provide a synthetic PPS, to be used by
the kernel's hardpps logic.
Thanks,
Richard
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists