From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49FA5C433E0 for ; Mon, 1 Feb 2021 05:46:53 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CBE0E64E15 for ; Mon, 1 Feb 2021 05:46:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CBE0E64E15 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 9D06020026; Mon, 1 Feb 2021 05:46:52 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vAzpAWFTYGQQ; Mon, 1 Feb 2021 05:46:49 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id 7954920022; Mon, 1 Feb 2021 05:46:48 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 57610C0FA7; Mon, 1 Feb 2021 05:46:48 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id E747BC013A for ; Mon, 1 Feb 2021 05:46:46 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id C7A7E869BF for ; Mon, 1 Feb 2021 05:46:46 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id aKPjrq3DLxmT for ; Mon, 1 Feb 2021 05:46:46 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by whitealder.osuosl.org (Postfix) with ESMTPS id C23AE869BB for ; Mon, 1 Feb 2021 05:46:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612158404; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=f2ImvkHtiWKuR6rS+/oQGBneQ9ERdYR3AODwgtXhy8s=; b=Nokv0k5IBHqJaRC9TfSRKTN5sukTrWu5bRxQNPD8yEHSpY1gp8mm6mINvN8mxxhJ21Q/sH rUsEQF98m01qimRlkxQhCx7XQc5s2JdTu6uaHf7QsxgRGqmJlb6xbs9B4gIYPnZuhkFO+n mIYSCn2OCeYizjncsM2aumQaVefwLQY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-111-YD89M8YCMyS_gQszRSShvw-1; Mon, 01 Feb 2021 00:46:42 -0500 X-MC-Unique: YD89M8YCMyS_gQszRSShvw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 412171005504; Mon, 1 Feb 2021 05:46:41 +0000 (UTC) Received: from [10.72.13.120] (ovpn-13-120.pek2.redhat.com [10.72.13.120]) by smtp.corp.redhat.com (Postfix) with ESMTP id 72FDA5E1A8; Mon, 1 Feb 2021 05:46:29 +0000 (UTC) Subject: Re: [PATCH RFC v2 05/10] vringh: add vringh_kiov_length() helper To: Stefano Garzarella , virtualization@lists.linux-foundation.org References: <20210128144127.113245-1-sgarzare@redhat.com> <20210128144127.113245-6-sgarzare@redhat.com> From: Jason Wang Message-ID: Date: Mon, 1 Feb 2021 13:46:27 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210128144127.113245-6-sgarzare@redhat.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Cc: Laurent Vivier , Max Gurtovoy , kvm@vger.kernel.org, "Michael S. Tsirkin" , linux-kernel@vger.kernel.org, Xie Yongji , Stefan Hajnoczi X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" Ck9uIDIwMjEvMS8yOCDkuIvljYgxMDo0MSwgU3RlZmFubyBHYXJ6YXJlbGxhIHdyb3RlOgo+IFRo aXMgbmV3IGhlbHBlciByZXR1cm5zIHRoZSB0b3RhbCBudW1iZXIgb2YgYnl0ZXMgY292ZXJlZCBi eQo+IGEgdnJpbmdoX2tpb3YuCj4KPiBTdWdnZXN0ZWQtYnk6IEphc29uIFdhbmcgPGphc293YW5n QHJlZGhhdC5jb20+Cj4gU2lnbmVkLW9mZi1ieTogU3RlZmFubyBHYXJ6YXJlbGxhIDxzZ2FyemFy ZUByZWRoYXQuY29tPgoKCkFja2VkLWJ5OiBKYXNvbiBXYW5nIDxqYXNvd2FuZ0ByZWRoYXQuY29t PgoKCj4gLS0tCj4gICBpbmNsdWRlL2xpbnV4L3ZyaW5naC5oIHwgMTEgKysrKysrKysrKysKPiAg IDEgZmlsZSBjaGFuZ2VkLCAxMSBpbnNlcnRpb25zKCspCj4KPiBkaWZmIC0tZ2l0IGEvaW5jbHVk ZS9saW51eC92cmluZ2guaCBiL2luY2x1ZGUvbGludXgvdnJpbmdoLmgKPiBpbmRleCA3NTUyMTFl YmQxOTUuLjg0ZGI3YjhmOTEyZiAxMDA2NDQKPiAtLS0gYS9pbmNsdWRlL2xpbnV4L3ZyaW5naC5o Cj4gKysrIGIvaW5jbHVkZS9saW51eC92cmluZ2guaAo+IEBAIC0xOTksNiArMTk5LDE3IEBAIHN0 YXRpYyBpbmxpbmUgdm9pZCB2cmluZ2hfa2lvdl9jbGVhbnVwKHN0cnVjdCB2cmluZ2hfa2lvdiAq a2lvdikKPiAgIAlraW92LT5pb3YgPSBOVUxMOwo+ICAgfQo+ICAgCj4gK3N0YXRpYyBpbmxpbmUg c2l6ZV90IHZyaW5naF9raW92X2xlbmd0aChzdHJ1Y3QgdnJpbmdoX2tpb3YgKmtpb3YpCj4gK3sK PiArCXNpemVfdCBsZW4gPSAwOwo+ICsJaW50IGk7Cj4gKwo+ICsJZm9yIChpID0ga2lvdi0+aTsg aSA8IGtpb3YtPnVzZWQ7IGkrKykKPiArCQlsZW4gKz0ga2lvdi0+aW92W2ldLmlvdl9sZW47Cj4g Kwo+ICsJcmV0dXJuIGxlbjsKPiArfQo+ICsKPiAgIHZvaWQgdnJpbmdoX2tpb3ZfYWR2YW5jZShz dHJ1Y3QgdnJpbmdoX2tpb3YgKmtpb3YsIHNpemVfdCBsZW4pOwo+ICAgCj4gICBpbnQgdnJpbmdo X2dldGRlc2Nfa2VybihzdHJ1Y3QgdnJpbmdoICp2cmgsCgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpWaXJ0dWFsaXphdGlvbiBtYWlsaW5nIGxpc3QKVmly dHVhbGl6YXRpb25AbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0cy5saW51 eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vdmlydHVhbGl6YXRpb24=