From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751628Ab0IOGVb (ORCPT ); Wed, 15 Sep 2010 02:21:31 -0400 Received: from e8.ny.us.ibm.com ([32.97.182.138]:51549 "EHLO e8.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750695Ab0IOGVa (ORCPT ); Wed, 15 Sep 2010 02:21:30 -0400 Subject: Re: [RFC PATCH 2/2] macvtap: TX zero copy between guest and host kernel From: Shirley Ma To: "Michael S. Tsirkin" Cc: Arnd Bergmann , Avi Kivity , "Xin, Xiaohui" , David Miller , netdev@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20100915051241.GA25340@redhat.com> References: <1284476719.13351.35.camel@localhost.localdomain> <201009141721.13202.arnd@arndb.de> <20100914152231.GA13105@redhat.com> <1284480025.13351.49.camel@localhost.localdomain> <20100914162952.GB13560@redhat.com> <1284483745.13351.71.camel@localhost.localdomain> <20100914182707.GB15549@redhat.com> <1284490143.13351.82.camel@localhost.localdomain> <20100914190156.GA16037@redhat.com> <1284492983.13351.95.camel@localhost.localdomain> <20100915051241.GA25340@redhat.com> Content-Type: text/plain; charset="UTF-8" Date: Tue, 14 Sep 2010 23:21:15 -0700 Message-ID: <1284531675.24603.259.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 (2.28.3-1.fc12) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2010-09-15 at 07:12 +0200, Michael S. Tsirkin wrote: > Yes, I agree this patch is useful for demo purposes: > simple, and shows what kind of performance gains > we can expect for TX. Any other issue you can see in this patch beside vhost descriptors update? Don't you think once I address vhost_add_used_and_signal update issue, it is a simple and complete patch for macvtap TX zero copy? Thanks Shirley