linux-kernel - Re: [PATCH 1/6] UML - Deal with host time going backwards

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Message-ID: <m1zlq2vuh2.fsf@frodo.ebiederm.org>
Date:	Tue, 03 Jun 2008 18:50:49 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Jeff Dike <jdike@...toit.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, Nix <nix@...eri.org.uk>,
	dhazelton@...er.net, linux-kernel@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net
Subject: Re: [PATCH 1/6] UML - Deal with host time going backwards

Jeff Dike <jdike@...toit.com> writes:

> On Tue, Jun 03, 2008 at 01:07:09PM -0700, Andrew Morton wrote:
>> So if I change the host's time by an hour, the time will not advance at all
>> on the guest for the next hour? Sounds suboptimal :)
>
> It is, but if the host is whacked, the guest just has to do the best that
> it can...

Could using a CLOCK_MONOTONIC time source fix this?  Those timers do not
change when we change the time on the host.

Eric
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