linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: John Stultz <john.stultz@linaro.org>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Vrabel <david.vrabel@citrix.com>,
	Jan Beulich <JBeulich@suse.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [Xen-devel] [PATCH 2/3] timekeeping: sync persistent clock and RTC on system time step changes
Date: Tue, 28 May 2013 12:09:14 -0700	[thread overview]
Message-ID: <51A500DA.9000708@linaro.org> (raw)
In-Reply-To: <20130528183137.GA23213@phenom.dumpdata.com>

On 05/28/2013 11:31 AM, Konrad Rzeszutek Wilk wrote:
> On Tue, May 28, 2013 at 07:26:14PM +0100, David Vrabel wrote:
>> On 15/05/13 19:10, John Stultz wrote:
>>> Ok, so really, as soon as the Dom0 time is set by NTP, all guests will
>>> see the right time? That makes more sense, and means the window for
>>> these sorts of issues is reasonably quite small.
>> It's a small window but it's occurring in our automated test system.
>>
>>> David: So I'm less inclined to merge this individual change, but if you
>>> still feel strongly about it, let me know and we can circle around on it
>>> after you've addressed the specific issues I pointed out earlier.
>> This patch was the actual bug fix but I've reworked it to use the
>> pvclock_gtod notifier chain as this seemed to be what KVM hosts were
>> using to maintain a clock for guests.  Please review the new series, thanks.
> Looks good.
>
> John if you are OK I am thinking to push this to Linus shortly as it is
> fixing a bug.

I'm really not sure I'd call this a bug.  That seems like an 
over-reaction to a misconfigured system.

Or if there is a bug, I'm not sure its been clearly explained.

thanks
-john




  reply	other threads:[~2013-05-28 19:09 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-13 17:56 [PATCH 0/3] x86,time,xen: maintain an accurate persistent clock in more cases David Vrabel
2013-05-13 17:56 ` [PATCH 1/3] x86: increase precision of x86_platform.get/set_wallclock() David Vrabel
2013-05-14  0:57   ` John Stultz
2013-05-14 17:52   ` John Stultz
2013-05-29  0:18   ` John Stultz
2013-05-29 12:16     ` David Vrabel
2013-05-13 17:56 ` [PATCH 2/3] timekeeping: sync persistent clock and RTC on system time step changes David Vrabel
2013-05-14  0:40   ` John Stultz
2013-05-14  9:47     ` David Vrabel
2013-05-14 17:15       ` John Stultz
2013-05-15  8:16         ` [Xen-devel] " Jan Beulich
2013-05-15 18:10           ` John Stultz
2013-05-28 18:26             ` David Vrabel
2013-05-28 18:31               ` Konrad Rzeszutek Wilk
2013-05-28 19:09                 ` John Stultz [this message]
2013-05-28 19:48                   ` Konrad Rzeszutek Wilk
2013-05-28 20:03                     ` John Stultz
2013-05-28 20:11                       ` John Stultz
2013-05-28 20:25                         ` Konrad Rzeszutek Wilk
2013-05-28 20:30                           ` John Stultz
2013-05-28 19:06               ` John Stultz
2013-05-13 17:56 ` [PATCH 3/3] x86/xen: sync the CMOS RTC as well as the Xen wallclock David Vrabel
2013-05-14  0:52   ` John Stultz
2013-05-14  7:57     ` [Xen-devel] " Jan Beulich
2013-05-14 15:59       ` John Stultz
2013-05-14 16:14         ` Jan Beulich
2013-05-14 16:17           ` John Stultz
2013-05-14 16:24             ` Konrad Rzeszutek Wilk
2013-05-14 16:28               ` John Stultz
2013-05-14  9:55     ` David Vrabel
2013-05-14 17:24   ` John Stultz
2013-05-14 18:00     ` David Vrabel
2013-05-14 18:03       ` John Stultz
2013-05-15  8:19     ` [Xen-devel] " Jan Beulich
2013-05-15 18:13       ` John Stultz

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=51A500DA.9000708@linaro.org \
    --to=john.stultz@linaro.org \
    --cc=JBeulich@suse.com \
    --cc=david.vrabel@citrix.com \
    --cc=konrad.wilk@oracle.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=tglx@linutronix.de \
    --cc=xen-devel@lists.xen.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).