From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:53739) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Ui42n-0006xG-Ep for qemu-devel@nongnu.org; Thu, 30 May 2013 10:41:37 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Ui42i-0002KT-WA for qemu-devel@nongnu.org; Thu, 30 May 2013 10:41:33 -0400 Message-ID: <51A764FC.7080705@redhat.com> Date: Thu, 30 May 2013 16:41:00 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <51A7036A.3050407@ozlabs.ru> <51A7049F.6040207@redhat.com> <51A70B3D.90609@ozlabs.ru> <51A71705.6060009@kamp.de> <51A74D79.7040204@redhat.com> <2765FDFA-8050-4AA3-8621-7E9EA2C89F9C@kamp.de> In-Reply-To: <2765FDFA-8050-4AA3-8621-7E9EA2C89F9C@kamp.de> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] broken incoming migration List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Lieven Cc: Alexey Kardashevskiy , "qemu-ppc@nongnu.org" , "qemu-devel@nongnu.org" , David Gibson Il 30/05/2013 16:38, Peter Lieven ha scritto: >> > You could also scan the page for nonzero values before writing it. > i had this in mind, but then choosed the other approach.... turned out to be a bad idea. > > alexey: i will prepare a patch later today, could you then please verify it fixes your problem. > > paolo: would we still need the madvise or is it enough to not write the zeroes? It should be enough to not write them. Paolo