From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34971) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WrOJ7-0007Qt-Ha for qemu-devel@nongnu.org; Mon, 02 Jun 2014 05:13:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WrOIz-0001WO-PA for qemu-devel@nongnu.org; Mon, 02 Jun 2014 05:13:29 -0400 Received: from mx1.redhat.com ([209.132.183.28]:65310) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WrOIz-0001V5-Hv for qemu-devel@nongnu.org; Mon, 02 Jun 2014 05:13:21 -0400 Message-ID: <538C402B.4060008@redhat.com> Date: Mon, 02 Jun 2014 11:13:15 +0200 From: Michal Privoznik MIME-Version: 1.0 References: <20140530140523.653892288@amt.cnet> In-Reply-To: <20140530140523.653892288@amt.cnet> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [patch 0/2] add QMP command to reset rtc interrupt backlog List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Marcelo Tosatti , qemu-devel@nongnu.org Cc: gleb@kernel.org, pbonzini@redhat.com, armbru@redhat.com On 30.05.2014 16:05, Marcelo Tosatti wrote: > It is necessary to reset RTC interrupt backlog if guest time is > synchronized via a different mechanism, such as QGA's guest-set-time > command. > > Failing to do so causes both corrections to be applied (summed), > resulting in an incorrect guest time. > > Marcelo, what happens if quest is synchronized via NTP? Does this command still need to be executed after 'cont'? Michal