From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zlatko Calusic Subject: Re: kvm: zapping shadow pages for mmio generation wraparound Date: Tue, 23 Jul 2013 14:35:30 +0200 Message-ID: <51EE7892.9070908@bitsync.net> References: <51ED9CC0.9070405@bitsync.net> <51EE6DFD.6080701@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Paolo Bonzini Return-path: Received: from bitsync.net ([80.83.126.10]:52569 "EHLO bitsync.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756913Ab3GWMfd (ORCPT ); Tue, 23 Jul 2013 08:35:33 -0400 In-Reply-To: <51EE6DFD.6080701@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 23.07.2013 13:50, Paolo Bonzini wrote: > Il 22/07/2013 22:57, Zlatko Calusic ha scritto: >> I'm getting a lot of these in kernel 3.11.0-rc1: >> >> Jul 19 19:53:06 ps kernel: kvm: zapping shadow pages for mmio generation >> wraparound >> Jul 19 22:37:47 ps kernel: kvm: zapping shadow pages for mmio generation >> wraparound >> Jul 20 00:07:24 ps kernel: kvm: zapping shadow pages for mmio generation >> wraparound >> Jul 20 00:11:04 ps kernel: kvm: zapping shadow pages for mmio generation >> wraparound >> Jul 20 00:39:14 ps kernel: kvm: zapping shadow pages for mmio generation >> wraparound >> Jul 21 00:25:32 ps kernel: kvm: zapping shadow pages for mmio generation >> wraparound >> >> There seems to be one line in the kernel log for every reboot of a WinXP >> guest, and I'm getting a bit bored with it. I don't understand what >> those messages mean? What can I do to stop them flooding the log? >> >> Please Cc: (not subscribed) > > The log message would let us correlate any reports with a new > optimization (added in 3.11). We will probably downgrade it to > KERN_DEBUG before 3.11 goes out (or otherwise cause it to disappear), in > the meanwhile it's harmless. > Ah, OK then. Thanks for the info. And certainly thanks for the great virtualization platform! Best regards, -- Zlatko