From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: [PATCH 0/3] xen: fix various wallclock problems Date: Fri, 12 Oct 2012 13:57:11 +0100 Message-ID: <1350046634-2462-1-git-send-email-david.vrabel@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: David Vrabel , Konrad Rzeszutek Wilk List-Id: xen-devel@lists.xenproject.org This series (with some toolstack updates) corrects a number of cases where a guest can see an incorrect wallclock time. 1. Systems with NTP won't periodically synchronize the hardware RTC so the wallclock may be incorrect after a reboot. 2. The wallclock is always ~500 ms behind the correct time. 3. If the system time was stepped and NTP isn't synchronized yet, the wallclock will still have the incorrect time. The fix for this requires the toolstack to synchronize the wallclock -- patch #3 provides the mechanism for this. David