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=-5.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 DA078C433DB for ; Fri, 26 Mar 2021 07:36:44 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 686D161A2D for ; Fri, 26 Mar 2021 07:36:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 686D161A2D 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 smtp1.osuosl.org (Postfix) with ESMTP id 105AC84A07; Fri, 26 Mar 2021 07:36:44 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7WTCnJhMpAWA; Fri, 26 Mar 2021 07:36:43 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp1.osuosl.org (Postfix) with ESMTP id A2CF283E9F; Fri, 26 Mar 2021 07:36:42 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 73013C000D; Fri, 26 Mar 2021 07:36:42 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 0E963C000A for ; Fri, 26 Mar 2021 07:36:41 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id DB55B40238 for ; Fri, 26 Mar 2021 07:36:40 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp2.osuosl.org (amavisd-new); dkim=pass (1024-bit key) header.d=redhat.com Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id G8eOr5e_3r7m for ; Fri, 26 Mar 2021 07:36:40 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [63.128.21.124]) by smtp2.osuosl.org (Postfix) with ESMTPS id E18CC4023D for ; Fri, 26 Mar 2021 07:36:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1616744198; 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=dSLEq+hMh1Ql2uL/IHuUBMQc9+yVTsv/4GeCDE92710=; b=ayT0XhuEHrQ9rHwzKP0RBRC33Ib8/AwKoAfRQJXRh5c2iNZHatjeJpllni2WOEPj4Rd0S7 odIyU4q18ReYfeJWyv3pc5Q7Wvsx4wec8q8agTL1999hZZFMpIh7ng3Tn4DRetzI3zqvDe eHj7fA8jxWloRPeUYySCsQfv1su7SiU= 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-542-wodSWgXbMYuwG4FqjYaUNw-1; Fri, 26 Mar 2021 03:36:36 -0400 X-MC-Unique: wodSWgXbMYuwG4FqjYaUNw-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E68B784BA41; Fri, 26 Mar 2021 07:36:33 +0000 (UTC) Received: from wangxiaodeMacBook-Air.local (ovpn-13-10.pek2.redhat.com [10.72.13.10]) by smtp.corp.redhat.com (Postfix) with ESMTP id 31C995D9CA; Fri, 26 Mar 2021 07:36:20 +0000 (UTC) Subject: Re: [PATCH v5 08/11] vduse: Implement an MMU-based IOMMU driver To: Yongji Xie References: <20210315053721.189-1-xieyongji@bytedance.com> <20210315053721.189-9-xieyongji@bytedance.com> <7c90754b-681d-f3bf-514c-756abfcf3d23@redhat.com> <2db71996-037e-494d-6ef0-de3ff164d3c3@redhat.com> <75e3b941-dfd2-ebbc-d752-8f25c1f14cab@redhat.com> From: Jason Wang Message-ID: <817336fa-c026-fd4d-dd2e-eb5f40c63ad4@redhat.com> Date: Fri, 26 Mar 2021 15:36:19 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Cc: Jens Axboe , Jonathan Corbet , kvm@vger.kernel.org, "Michael S. Tsirkin" , netdev@vger.kernel.org, Randy Dunlap , Matthew Wilcox , virtualization@lists.linux-foundation.org, Christoph Hellwig , bcrl@kvack.org, viro@zeniv.linux.org.uk, Stefan Hajnoczi , linux-fsdevel@vger.kernel.org, Dan Carpenter , =?UTF-8?Q?Mika_Penttil=c3=a4?= 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" CuWcqCAyMDIxLzMvMjYg5LiL5Y2IMjo1NiwgWW9uZ2ppIFhpZSDlhpnpgZM6Cj4gT24gRnJpLCBN YXIgMjYsIDIwMjEgYXQgMjoxNiBQTSBKYXNvbiBXYW5nIDxqYXNvd2FuZ0ByZWRoYXQuY29tPiB3 cm90ZToKPj4KPj4g5ZyoIDIwMjEvMy8yNiDkuIvljYgxOjE0LCBZb25namkgWGllIOWGmemBkzoK Pj4KPj4gKyAgICAgfQo+PiArICAgICBtYXAtPmJvdW5jZV9wYWdlID0gcGFnZTsKPj4gKwo+PiAr 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