From: Daniel Hazelton <dhazelton@enter.net>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Jeff Dike <jdike@addtoit.com>,
akpm@linuxfoundation.org, linux-kernel@vger.kernel.org,
user-mode-linux-devel@lists.sourceforge.net, nix@esperi.org.uk
Subject: Re: [PATCH 1/6] UML - Deal with host time going backwards
Date: Tue, 3 Jun 2008 15:43:56 -0400 [thread overview]
Message-ID: <200806031543.56864.dhazelton@enter.net> (raw)
In-Reply-To: <20080603123211.e129c222.akpm@linux-foundation.org>
On Tuesday 03 June 2008 03:32:11 pm Andrew Morton wrote:
> On Tue, 3 Jun 2008 15:02:35 -0400
>
> Jeff Dike <jdike@addtoit.com> wrote:
> > Protection against the host's time going backwards - keep track of the
> > time at the last tick and if it's greater than the current time, keep
> > time stopped until the host catches up.
>
> Strange. What would cause the host's time (or at least UML's perception
> of it) to go backwards?
A wild guess would be that the UML process is running "fast" at some point and
its expectation of the host's time is skewed forward because of that.
Another possibility is that the hosts clock got reset between the times UML
has checked it and the correction was a negative one.
DRH
--
Dialup is like pissing through a pipette. Slow and excruciatingly painful.
next prev parent reply other threads:[~2008-06-03 19:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-03 19:02 [PATCH 1/6] UML - Deal with host time going backwards Jeff Dike
2008-06-03 19:32 ` Andrew Morton
2008-06-03 19:43 ` Daniel Hazelton [this message]
2008-06-03 19:52 ` Nix
2008-06-03 20:07 ` Andrew Morton
2008-06-03 20:37 ` Daniel Hazelton
2008-06-03 21:00 ` Jeff Dike
2008-06-04 1:50 ` Eric W. Biederman
2008-06-04 3:15 ` Jeff Dike
2008-06-04 5:12 ` Daniel Hazelton
2008-06-04 14:31 ` Jeremy Fitzhardinge
2008-06-04 19:37 ` Jeff Dike
2008-06-04 20:05 ` Jeremy Fitzhardinge
2008-06-05 15:30 ` Jeff Dike
2008-06-05 18:14 ` Nix
2008-06-05 19:47 ` Jeff Dike
2008-06-05 21:41 ` Nix
2008-06-05 18:19 ` Nix
-- strict thread matches above, loose matches on Subject: below --
2008-06-03 19:59 devzero
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