Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751173Ab0FTLQi (ORCPT ); Sun, 20 Jun 2010 07:16:38 -0400 Received: from mx1.redhat.com ([209.132.183.28]:42140 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750722Ab0FTLQh (ORCPT ); Sun, 20 Jun 2010 07:16:37 -0400 Date: Sun, 20 Jun 2010 14:11:24 +0300 From: "Michael S. Tsirkin" To: Herbert Xu Cc: "Xin, Xiaohui" , Stephen Hemminger , "netdev@vger.kernel.org" , "kvm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "mingo@elte.hu" , "davem@davemloft.net" , "jdike@linux.intel.com" , Rusty Russell Subject: Re: [RFC PATCH v7 01/19] Add a new structure for skb buffer from external. Message-ID: <20100620111124.GB5285@redhat.com> References: <20100617112119.GB1515@gondor.apana.org.au> <20100618055929.GA11333@gondor.apana.org.au> <20100620100631.GB4578@redhat.com> <20100620103235.GA31284@gondor.apana.org.au> <20100620103909.GA5285@redhat.com> <20100620110254.GA31484@gondor.apana.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100620110254.GA31484@gondor.apana.org.au> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 976 Lines: 25 On Sun, Jun 20, 2010 at 09:02:54PM +1000, Herbert Xu wrote: > On Sun, Jun 20, 2010 at 01:39:09PM +0300, Michael S. Tsirkin wrote: > > > > > It's just like migrating from a backend that supports TSO > > > to one that doesn't. > > > > Exactly. We don't support such migration. > > Well that's something that has to be addressed in the virtio_net. Rather than modifying all guests, it seems much easier not to assume specific buffer layout in host. Copying network header around seems a small cost. > Cheers, > -- > Visit Openswan at http://www.openswan.org/ > Email: Herbert Xu ~{PmV>HI~} > Home Page: http://gondor.apana.org.au/~herbert/ > PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/