Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753780Ab0HBQZ0 (ORCPT ); Mon, 2 Aug 2010 12:25:26 -0400 Received: from e3.ny.us.ibm.com ([32.97.182.143]:52143 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751355Ab0HBQZY (ORCPT ); Mon, 2 Aug 2010 12:25:24 -0400 Subject: Re: [RFC PATCH v8 00/16] Provide a zero-copy method on KVM virtio-net. From: Shirley Ma To: Avi Kivity Cc: xiaohui.xin@intel.com, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mst@redhat.com, mingo@elte.hu, davem@davemloft.net, herbert@gondor.hengli.com.au, jdike@linux.intel.com In-Reply-To: <4C56EE3D.1050203@redhat.com> References: <1280402088-5849-1-git-send-email-xiaohui.xin@intel.com> <1280442682.9058.15.camel@localhost.localdomain> <4C525CD2.5080604@redhat.com> <1280504771.9058.25.camel@localhost.localdomain> <4C552DC4.5000600@redhat.com> <1280764918.22830.7.camel@localhost.localdomain> <4C56EE3D.1050203@redhat.com> Content-Type: text/plain; charset="UTF-8" Date: Mon, 02 Aug 2010 09:25:19 -0700 Message-ID: <1280766319.22830.24.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 Content-Length: 490 Lines: 15 On Mon, 2010-08-02 at 19:11 +0300, Avi Kivity wrote: > I don't understand this. gup_fast() only calls gup() if the page is > swapped out or read-only. Oh, I used the page as read-only on xmit path. Should I use write instead? Thanks Shirley -- 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/