From: Keir Fraser <keir@xensource.com>
To: Steven Rostedt <srostedt@redhat.com>, xen-devel@lists.xensource.com
Subject: Re: [PATCH] Have xen dom0 still handle time of 1970
Date: Wed, 17 Jan 2007 16:16:01 +0000 [thread overview]
Message-ID: <C1D3FC41.7C28%keir@xensource.com> (raw)
In-Reply-To: <45AE45B7.7030704@redhat.com>
On 17/1/07 15:50, "Steven Rostedt" <srostedt@redhat.com> wrote:
> Here's what you get without the patch:
>
> # date -u 010100011970
> Thu Jan 1 00:01:00 UTC 1970
> # date
> Mon Feb 22 16:42:30 EST 2010
>
> Here's what you get with the patch:
>
> # date -u 010100011970
> Thu Jan 1 00:01:00 UTC 1970
> # date
> Wed Dec 31 19:01:01 EST 1969
The Xen interface is defined relative to UTC, not local time zone, so
negative numbers shuld not be involved if you are setting a time value after
the epoch (which you are). Perhaps our assumption that xtime is a UTC
variable is broken? If that's the case, is there a way to translate between
local time zone and UTC inside the kernel? If not we have a bit of a problem
since it really makes sense for Xen to work in UTC and let each guest apply
its own time-zone transformation.
-- Keir
next prev parent reply other threads:[~2007-01-17 16:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-17 15:50 [PATCH] Have xen dom0 still handle time of 1970 Steven Rostedt
2007-01-17 16:16 ` Keir Fraser [this message]
2007-01-17 16:30 ` Steven Rostedt
2007-01-17 17:26 ` Keir Fraser
2007-01-17 17:36 ` Rik van Riel
2007-01-17 17:44 ` Keir Fraser
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