From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755819AbZHLDTy (ORCPT ); Tue, 11 Aug 2009 23:19:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755779AbZHLDTx (ORCPT ); Tue, 11 Aug 2009 23:19:53 -0400 Received: from ozlabs.org ([203.10.76.45]:56486 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755612AbZHLDTw (ORCPT ); Tue, 11 Aug 2009 23:19:52 -0400 From: Rusty Russell To: Avi Kivity Subject: Re: Page allocation failures in guest Date: Wed, 12 Aug 2009 12:49:51 +0930 User-Agent: KMail/1.11.2 (Linux/2.6.28-14-generic; KDE/4.2.2; i686; ; ) Cc: Pierre Ossman , Minchan Kim , kvm@vger.kernel.org, LKML , linux-mm@kvack.org, Wu Fengguang , KOSAKI Motohiro , Rik van Riel References: <20090713115158.0a4892b0@mjolnir.ossman.eu> <20090811083233.3b2be444@mjolnir.ossman.eu> <4A811545.5090209@redhat.com> In-Reply-To: <4A811545.5090209@redhat.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200908121249.51973.rusty@rustcorp.com.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 11 Aug 2009 04:22:53 pm Avi Kivity wrote: > On 08/11/2009 09:32 AM, Pierre Ossman wrote: > > On Mon, 13 Jul 2009 23:59:52 +0900 > > Minchan Kim wrote: > > Any ideas here? Is the virtio net driver very GFP_ATOMIC happy so it > > drains all those pages? And why is this triggered by a kernel upgrade > > in the host? > > > > Avi? > > Rusty? It's kind of the nature of networking devices :( I'd say your host now offers GSO features, so the guest allocates big packets. > > I doesn't get out of it though, or at least the virtio net driver > > wedges itself. There's a fixme to retry when this happens, but this is the first report I've received. I'll check it out. Thanks, Rusty.