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,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 5C9E2C48BC2 for ; Wed, 23 Jun 2021 03:31:12 +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 090FA61375 for ; Wed, 23 Jun 2021 03:31:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 090FA61375 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id BCCF583C34; Wed, 23 Jun 2021 03:31:11 +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 qH_sfY5FCJk7; Wed, 23 Jun 2021 03:31:11 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp1.osuosl.org (Postfix) with ESMTPS id AB8DD83C2E; Wed, 23 Jun 2021 03:31:10 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8C749C0010; Wed, 23 Jun 2021 03:31:10 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 11889C000E for ; Wed, 23 Jun 2021 03:31:10 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id D98BA403C7 for ; Wed, 23 Jun 2021 03:31:09 +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 3wSQSMDTV6OH for ; Wed, 23 Jun 2021 03:31:09 +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 [170.10.133.124]) by smtp2.osuosl.org (Postfix) with ESMTPS id 31A07400D7 for ; Wed, 23 Jun 2021 03:31:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1624419068; 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=VZSgP5xqL55dngZG3CanjqGD23m6Wc1RN7v32XWp3kc=; b=D0rT+9lKGIV1w9C2Ioin8KLW5yFWmlewxYNLvASOFoxe06tyKATEMZ58Of6am4GfmT5ACq SsIryGYe5f7eEAL03BvIlqvfnbkLyMjsVAA9Ocjmdr1Xd1eq8SHx0eBFbVNZeX9L5IL+AH 22XoJ1041TB3jOG5QupfYXb76lPItiU= Received: from mail-pl1-f199.google.com (mail-pl1-f199.google.com [209.85.214.199]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-334-r-0sNZLKNr6QLCzMv3GfSQ-1; Tue, 22 Jun 2021 23:31:06 -0400 X-MC-Unique: r-0sNZLKNr6QLCzMv3GfSQ-1 Received: by mail-pl1-f199.google.com with SMTP id x22-20020a1709028216b0290112042155c8so318842pln.14 for ; Tue, 22 Jun 2021 20:31:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=VZSgP5xqL55dngZG3CanjqGD23m6Wc1RN7v32XWp3kc=; b=BRZJ3shSXgG42DvTAIJlHwWJgEsMr5JUo+Cl21SplI633xfKKjpCxwC4i1GUsqWxBg VkMuqco6E1V3Ilz9e4gZ4izTp/aGAhXLmJ19sCEfR/KnYXNtC0XOEYpD7UbTnBbHH1LS tGBH7dp8Xf2KlGlqUyxH/ES5bY3XwWAj+pUc6hAFc8SQIVucMgMVYsDYDw1MlQoEPomb 8MkwV2fOyp9Ht4eriN8XyKFv6oeCuKN7BYOPedWjgvxMQy6DNyit2fePWuyrOqlK549f idEnxXOVbiuxj3YtWDVapSI6/BmaV7cbKe8ptYc/lyRBfPkP4DHRuPF8ZweZXUTGcfi3 fK9g== X-Gm-Message-State: AOAM533feS6ms/7GoZTMIMXMxFyxtU+Ql0M71l4H+BHNB6B5fV3fDTWU zHPkUkQX6wP98AkXjAWFTggtEsAgWGsqBGtPVq+BM4MvlNISsEN1PVS0c6PHo332OqW/1j0mnow ESOFeY+M7pGR8azIvvuzMo9mHnC1T/Q== X-Received: by 2002:a17:90b:a4d:: with SMTP id gw13mr7324893pjb.104.1624419065659; Tue, 22 Jun 2021 20:31:05 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzQhXaoy3jxuNbqcv+CnTgPw9skCZRgRJ2b9PqWzTzCghH3uazW1CaiGjP6RnFZCrYeeAvhUQ== X-Received: by 2002:a17:90b:a4d:: with SMTP id gw13mr7324867pjb.104.1624419065413; Tue, 22 Jun 2021 20:31:05 -0700 (PDT) Received: from wangxiaodeMacBook-Air.local ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id g4sm658859pfu.134.2021.06.22.20.30.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 22 Jun 2021 20:31:04 -0700 (PDT) Subject: Re: [PATCH v8 09/10] vduse: Introduce VDUSE - vDPA Device in Userspace To: Yongji Xie References: <20210615141331.407-1-xieyongji@bytedance.com> <20210615141331.407-10-xieyongji@bytedance.com> <1bba439f-ffc8-c20e-e8a4-ac73e890c592@redhat.com> <0aeb7cb7-58e5-1a95-d830-68edd7e8ec2e@redhat.com> From: Jason Wang Message-ID: Date: Wed, 23 Jun 2021 11:30:52 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Cc: kvm , "Michael S. Tsirkin" , virtualization , Christian Brauner , Jonathan Corbet , Matthew Wilcox , Christoph Hellwig , Dan Carpenter , Stefano Garzarella , Al Viro , Stefan Hajnoczi , songmuchun@bytedance.com, Jens Axboe , Greg KH , Randy Dunlap , linux-kernel , iommu@lists.linux-foundation.org, bcrl@kvack.org, netdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, =?UTF-8?Q?Mika_Penttil=c3=a4?= X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support 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: iommu-bounces@lists.linux-foundation.org Sender: "iommu" CuWcqCAyMDIxLzYvMjIg5LiL5Y2INDoxNCwgWW9uZ2ppIFhpZSDlhpnpgZM6Cj4gT24gVHVlLCBK dW4gMjIsIDIwMjEgYXQgMzo1MCBQTSBKYXNvbiBXYW5nIDxqYXNvd2FuZ0ByZWRoYXQuY29tPiB3 cm90ZToKPj4KPj4g5ZyoIDIwMjEvNi8yMiDkuIvljYgzOjIyLCBZb25namkgWGllIOWGmemBkzoK Pj4+PiBXZSBuZWVkIGZpeCBhIHdheSB0byBwcm9wYWdhdGUgdGhlIGVycm9yIHRvIHRoZSB1c2Vy c3BhY2UuCj4+Pj4KPj4+PiBFLmcgaWYgd2Ugd2FudCB0byBzdG9wIHRoZSBkZWl2Y2UsIHdlIHdp bGwgZGVsYXkgdGhlIHN0YXR1cyByZXNldCB1bnRpbAo+Pj4+IHdlIGdldCByZXNwb3NlIGZyb20g dGhlIHVzZXJzcGFjZT8KPj4+Pgo+Pj4gSSBkaWRuJ3QgZ2V0IGhvdyB0byBkZWxheSB0aGUgc3Rh dHVzIHJlc2V0LiBBbmQgc2hvdWxkIGl0IGJlIGEgRG9TCj4+PiB0aGF0IHdlIHdhbnQgdG8gZml4 IGlmIHRoZSB1c2Vyc3BhY2UgZG9lc24ndCBnaXZlIGEgcmVzcG9uc2UgZm9yZXZlcj8KPj4KPj4g WW91J3JlIHJpZ2h0LiBTbyBsZXQncyBtYWtlIHNldF9zdGF0dXMoKSBjYW4gZmFpbCBmaXJzdCwg dGhlbiBwcm9wYWdhdGUKPj4gaXRzIGZhaWx1cmUgdmlhIFZIT1NUX1ZEUEFfU0VUX1NUQVRVUy4K Pj4KPiBPSy4gU28gd2Ugb25seSBuZWVkIHRvIHByb3BhZ2F0ZSB0aGUgZmFpbHVyZSBpbiB0aGUg dmhvc3QtdmRwYSBjYXNlLCByaWdodD8KCgpJIHRoaW5rIG5vdCwgd2UgbmVlZCB0byBkZWFsIHdp dGggdGhlIHJlc2V0IGZvciB2aXJ0aW8gYXMgd2VsbDoKCkUuZyBpbiByZWdpc3Rlcl92aXJ0aW9f ZGV2aWNlcygpLCB3ZSBoYXZlOgoKIMKgwqDCoMKgwqDCoMKgIC8qIFdlIGFsd2F5cyBzdGFydCBi eSByZXNldHRpbmcgdGhlIGRldmljZSwgaW4gY2FzZSBhIHByZXZpb3VzCiDCoMKgwqDCoMKgwqDC oMKgICogZHJpdmVyIG1lc3NlZCBpdCB1cC7CoCBUaGlzIGFsc28gdGVzdHMgdGhhdCBjb2RlIHBh dGggYSAKbGl0dGxlLiAqLwogwqDCoMKgwqDCoCBkZXYtPmNvbmZpZy0+cmVzZXQoZGV2KTsKCldl IHByb2JhYmx5IG5lZWQgdG8gbWFrZSByZXNldCBjYW4gZmFpbCBhbmQgdGhlbiBmYWlsIHRoZSAK cmVnaXN0ZXJfdmlydGlvX2RldmljZSgpIGFzIHdlbGwuCgpUaGFua3MKCgo+Cj4gVGhhbmtzLAo+ IFlvbmdqaQo+CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f Xwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0 cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU=