From mboxrd@z Thu Jan  1 00:00:00 1970
From: Suravee Suthikulanit <suravee.suthikulpanit@amd.com>
Subject: Re: Time Skewing on Windows XP
Date: Thu, 14 Mar 2013 10:16:27 -0500
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To: Jan Beulich <JBeulich@suse.com>
Cc: George.Dunlap@eu.citrix.com, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
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On 3/12/2013 3:03 AM, Jan Beulich wrote:

> While I recall respective reports, the issue should not be present
> on current -unstable, so if you do have observations like this they
> will need investigation.

Jan,

I finally traced the issue back to the patch that this first happened.  This bug started in the patch :

H86/HVM: assorted RTC emulation adjustment (w/ git commit id 620d5dad54008e40798c4a0c4322aef274c36fa3)

I believe there are some issues with the changes in rtc_ioport_read in the arch/x86/hvm/rtc.c
and in the pt_update_irq().

Suravee