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=-5.0 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 3DF07C433DF for ; Tue, 20 Oct 2020 09:20:45 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 7355D22283 for ; Tue, 20 Oct 2020 09:20:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="OfvaBT0P" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7355D22283 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 hemlock.osuosl.org (Postfix) with ESMTP id 1ED53872F3; Tue, 20 Oct 2020 09:20:44 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gxz6a52hKOXz; Tue, 20 Oct 2020 09:20:43 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 4A1DB872E1; Tue, 20 Oct 2020 09:20:43 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 24DCAC088B; Tue, 20 Oct 2020 09:20:43 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 515C6C0051 for ; Tue, 20 Oct 2020 09:20:41 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 3F9BD86B4F for ; Tue, 20 Oct 2020 09:20:41 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0S8Lm8TmHlg5 for ; Tue, 20 Oct 2020 09:20:40 +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 [63.128.21.124]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 688E086B4E for ; Tue, 20 Oct 2020 09:20:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603185639; 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=HZrTt3RPheBVTMDXVvDc/OXdQNtnIu9P2NzODgtsSV0=; b=OfvaBT0PZZS7/kQrFN4iChq5kmUH/pPQbdz0rKlhmKq0whLVC25jFl3fNSEVplNh+KwJ4P YQu3P6NZcKExLx38gEFPwuKRk0IfYT54YnxW6NG9kQQR+dL/Ec4ttzsq/lkwwKb5wPi3Un /E6ZHyi57an3e+LwX4HNUGnBSHuJkP0= 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-570-aRgYslQlN8CC3xuq29C9PA-1; Tue, 20 Oct 2020 05:20:35 -0400 X-MC-Unique: aRgYslQlN8CC3xuq29C9PA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 436289CC1C; Tue, 20 Oct 2020 09:20:33 +0000 (UTC) Received: from [10.72.13.171] (ovpn-13-171.pek2.redhat.com [10.72.13.171]) by smtp.corp.redhat.com (Postfix) with ESMTP id 05AEC6EF6E; Tue, 20 Oct 2020 09:19:57 +0000 (UTC) Subject: Re: (proposal) RE: [PATCH v7 00/16] vfio: expose virtual Shared Virtual Addressing to VMs To: "Liu, Yi L" , "Tian, Kevin" , "alex.williamson@redhat.com" , "eric.auger@redhat.com" , "baolu.lu@linux.intel.com" , "joro@8bytes.org" References: <45faf89a-0a40-2a7a-0a76-d7ba76d0813b@redhat.com> <9c10b681-dd7e-2e66-d501-7fcc3ff1207a@redhat.com> <21a66a96-4263-7df2-3bec-320e6f38a9de@redhat.com> From: Jason Wang Message-ID: <6e478a9e-2051-c0cd-b6fd-624ff5ef0f53@redhat.com> Date: Tue, 20 Oct 2020 17:19:55 +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: Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Cc: "jean-philippe@linaro.org" , "Raj, Ashok" , "kvm@vger.kernel.org" , "Michael S. Tsirkin" , "stefanha@gmail.com" , "Tian, Jun J" , "iommu@lists.linux-foundation.org" , "Sun, Yi Y" , Jason Gunthorpe , "Wu, Hao" 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" SGkgWWk6CgpPbiAyMDIwLzEwLzIwIOS4i+WNiDQ6MTksIExpdSwgWWkgTCB3cm90ZToKPj4gWWVz LCBidXQgc2luY2UgUEFTSUQgaXMgYSBnbG9iYWwgaWRlbnRpZmllciBub3csIEkgdGhpbmsga2Vy bmVsIHNob3VsZAo+PiB0cmFjayB0aGUgYSBkZXZpY2UgbGlzdCBwZXIgUEFTSUQ/Cj4gV2UgaGF2 ZSBzdWNoIHRyYWNrLiBJdCdzIGRvbmUgaW4gaW9tbXUgZHJpdmVyLiBZb3UgY2FuIHJlZmVyIHRv IHRoZQo+IHN0cnVjdCBpbnRlbF9zdm0uIFBBU0lEIGlzIGEgZ2xvYmFsIGlkZW50aWZpZXIsIGJ1 dCBpdCBkb2VzbuKAmXQgYWZmZWN0IHRoYXQKPiB0aGUgUEFTSUQgdGFibGUgaXMgcGVyLWRldmlj ZS4KPgo+PiBTbyBmb3Igc3VjaCBiaW5kaW5nLCBQQVNJRCBzaG91bGQgYmUKPj4gc3VmZmljaWVu dCBmb3IgdUFQSS4KPiBub3QgcXVpdGUgZ2V0IGl0LiBQQVNJRCBtYXkgYmUgYm91bmQgdG8gbXVs dGlwbGUgZGV2aWNlcywgaG93IGRvCj4geW91IGZpZ3VyZSBvdXQgdGhlIHRhcmdldCBkZXZpY2Ug aWYgeW91IGRvbuKAmXQgcHJvdmlkZSBzdWNoIGluZm8uCgoKSSBtYXkgbWlzcyBzb2VtdGhpbmcg YnV0IGlzIHRoZXJlIGFueSByZWFzb24gdGhhdCB1c2Vyc3BhY2UgbmVlZCB0byAKZmlndXJlIG91 dCB0aGUgdGFyZ2V0IGRldmljZT8gUEFTSUQgaXMgYWJvdXQgYWRkcmVzcyBzcGFjZSBub3QgYSAK c3BlY2lmaWMgZGV2aWNlIEkgdGhpbmsuCgoKPgo+Pj4+PiBUaGUgYmluZGluZyByZXF1ZXN0IGlz IGluaXRpYXRlZCBieSB0aGUgdmlydHVhbCBJT01NVSwgd2hlbiBjYXB0dXJpbmcKPj4+Pj4gZ3Vl c3QgYXR0ZW1wdCBvZiBiaW5kaW5nIHBhZ2UgdGFibGUgdG8gYSB2aXJ0dWFsIFBBU0lEIGVudHJ5 IGZvciBhCj4+Pj4+IGdpdmVuIGRldmljZS4KPj4+PiBBbmQgZm9yIEwyIHBhZ2UgdGFibGUgcHJv Z3JhbW1pbmcsIGlmIFBBU0lEIGlzIHVzZSBieSBib3RoIGUuZyBWRklPIGFuZAo+Pj4+IHZEUEEs IHVzZXIgbmVlZCB0byBjaG9vc2Ugb25lIG9mIHVBUEkgdG8gYnVpbGQgbDIgbWFwcGluZ3M/Cj4+ PiBmb3IgTDIgcGFnZSB0YWJsZSBtYXBwaW5ncywgaXQncyBkb25lIGJ5IFZGSU8gTUFQL1VOTUFQ LiBmb3IgdmRwYSwgSSBndWVzcwo+Pj4gaXQgaXMgdGxiIGZsdXNoLiBzbyB5b3UgYXJlIHJpZ2h0 LiBLZWVwaW5nIEwxL0wyIHBhZ2UgdGFibGUgbWFuYWdlbWVudCBpbgo+Pj4gYSBzaW5nbGUgdUFQ SSBzZXQgaXMgYWxzbyBhIHJlYXNvbiBmb3IgbXkgY3VycmVudCBzZXJpZXMgd2hpY2ggZXh0ZW5k cyBWRklPCj4+PiBmb3IgTDEgbWFuYWdlbWVudC4KPj4gSSdtIGFmcmFpZCB0aGF0IHdvdWxkIGlu dHJvZHVjZSBjb25mdXNpbmcgdG8gdXNlcnNwYWNlLiBFLmc6Cj4+Cj4+IDEpIHdoZW4gaGF2aW5n IG9ubHkgdkRQQSBkZXZpY2UsIGl0IHVzZXMgdkRQQSB1QVBJIHRvIGRvIGwyIG1hbmFnZW1lbnQK Pj4gMikgd2hlbiB2RFBBIHNoYXJlcyBQQVNJRCB3aXRoIFZGSU8sIGl0IHdpbGwgdXNlIFZGSU8g dUFQSSB0byBkbyB0aGUgbDIKPj4gbWFuYWdlbWVudD8KPiBJIHRoaW5rIHZEUEEgd2lsbCBzdGls bCB1c2UgaXRzIG93biBsMiBmb3IgdGhlIGwyIG1hcHBpbmdzLiBub3Qgc3VyZSB3aHkgeW91Cj4g bmVlZCB2RFBBIHVzZSBWRklPJ3MgbDIgbWFuYWdlbWVudC4gSSBkb24ndCB0aGluayBpdCBpcyB0 aGUgY2FzZS4KCgpTZWUgcHJldmlvdXMgZGlzY3Vzc2lvbiB3aXRoIEtldmluLiBJZiBJIHVuZGVy c3RhbmQgY29ycmVjdGx5LCB5b3UgCmV4cGVjdCBhIHNoYXJlZCBMMiB0YWJsZSBpZiB2RFBBIGFu ZCBWRklPIGRldmljZSBhcmUgdXNpbmcgdGhlIHNhbWUgUEFTSUQuCgpJbiB0aGlzIGNhc2UsIGlm IGwyIGlzIHN0aWxsIG1hbmFnZWQgc2VwYXJhdGVseSwgdGhlcmUgd2lsbCBiZSAKZHVwbGljYXRl ZCByZXF1ZXN0IG9mIG1hcCBhbmQgdW5tYXAuCgpUaGFua3MKCgo+Cj4gUmVnYXJkcywKPiBZaSBM aXUKPgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9t bXUgbWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8v bGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11