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 Received: from smtp2.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 smtp.lore.kernel.org (Postfix) with ESMTPS id 41B23C433EF for ; Fri, 28 Jan 2022 06:00:49 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id C67EB40328; Fri, 28 Jan 2022 06:00:48 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org 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 1ASmwSmkeYtN; Fri, 28 Jan 2022 06:00:47 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp2.osuosl.org (Postfix) with ESMTPS id BDD9F400EA; Fri, 28 Jan 2022 06:00:46 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 936FCC001A; Fri, 28 Jan 2022 06:00:46 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [IPv6:2605:bc80:3010::137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 27358C000B for ; Fri, 28 Jan 2022 06:00:45 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 1589D414C1 for ; Fri, 28 Jan 2022 06:00:45 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp4.osuosl.org (amavisd-new); dkim=pass (1024-bit key) header.d=redhat.com Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6QlXtjbNHDvX for ; Fri, 28 Jan 2022 06:00:43 +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 [170.10.129.124]) by smtp4.osuosl.org (Postfix) with ESMTPS id BFD6A4136B for ; Fri, 28 Jan 2022 06:00:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1643349642; 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=OYgQt0/KeFSCIkAhuFPGEarb+no47SgZxYR96SrPZ0c=; b=D5sD7vc0TOc3KjldfAxyfjbwQ+2fJdxMmHnktEwu0QAKrLEfzpZWgoiaQ+gTdCyBnOJkus 1iGpLbX9vWCMv4j/MDq69piIlbid95TZeSoihywZVGQ82piB0JVYgv1k3mibo7okfWZyXV GHlVcbZAyqiReZPIl/T6c2Od8vt7Rjk= Received: from mail-pl1-f198.google.com (mail-pl1-f198.google.com [209.85.214.198]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-595-pEt9r2zROxOTH5Ty3PuO0w-1; Fri, 28 Jan 2022 01:00:39 -0500 X-MC-Unique: pEt9r2zROxOTH5Ty3PuO0w-1 Received: by mail-pl1-f198.google.com with SMTP id k7-20020a170902ba8700b0014c7e2870d4so2627335pls.21 for ; Thu, 27 Jan 2022 22:00:39 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=OYgQt0/KeFSCIkAhuFPGEarb+no47SgZxYR96SrPZ0c=; b=4kYp73wHCvCE/+LY26UuSGvddT9rBr+9dls/cSTe14racJiOu+VB3SBKEVLhrklLEM kZDT7epjn1RhCbVJjPIoH/WpcVb4KyLPmRmpuO9sz3RVxGsJG6u0zUE3OLuC6S5U2J7h yuyYXDgBx/B2SEvAM5bLFVsSk3sdsLZxO0gUTaTjvfg8h6kl56RPVfYhnuSBiBP7CfQn Vos1XgxI6OTbXlhsIso4k8dQFe42yEgFXRWozgS40XbvJjI1Rt2Nq4/sV+WQlBBW15Rn 6WKGTACoHBD9AKUL1Z5lcQpEgfNYKP7bIn9Dqj3kIKPKmQbKxUM8PFG9Nk4AhmKDHX// J+vA== X-Gm-Message-State: AOAM5316jujryr3DMIiTz4vQe5ml3Bwv0ZmyOOqA9RGa2OMsxRgLnlGG IDhLHWbZbvbo30U4KQSYRXZaQY+kI67YEaRl42U0hXxJiwmhkZxmRt1sYI3H0i5ZXRHLxzXCzlv hWZDiip1Ywmdva2+r4kwoFJfggoUH6XvUCyfdZwvNmg== X-Received: by 2002:a17:902:7e0a:: with SMTP id b10mr6658093plm.17.1643349638622; Thu, 27 Jan 2022 22:00:38 -0800 (PST) X-Google-Smtp-Source: ABdhPJz7hNeWWqb8aRBUDh65gGxA3ifNtHPG4/49IrbOF8G9VrCDqBH4KQA7MYQApwmP4y74Q+g8mA== X-Received: by 2002:a17:902:7e0a:: with SMTP id b10mr6658050plm.17.1643349638328; Thu, 27 Jan 2022 22:00:38 -0800 (PST) Received: from [10.72.13.185] ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id b13sm7427295pfm.27.2022.01.27.22.00.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 27 Jan 2022 22:00:37 -0800 (PST) Message-ID: <3900d7cc-a7a0-90a0-5ba4-6fc37a84922f@redhat.com> Date: Fri, 28 Jan 2022 14:00:30 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: [PATCH 02/31] vhost: Add VhostShadowVirtqueue To: =?UTF-8?Q?Eugenio_P=c3=a9rez?= , qemu-devel@nongnu.org References: <20220121202733.404989-1-eperezma@redhat.com> <20220121202733.404989-3-eperezma@redhat.com> From: Jason Wang In-Reply-To: <20220121202733.404989-3-eperezma@redhat.com> 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: Laurent Vivier , Parav Pandit , Cindy Lu , "Michael S. Tsirkin" , Richard Henderson , Markus Armbruster , Gautam Dawar , virtualization@lists.linux-foundation.org, Eduardo Habkost , Harpreet Singh Anand , Xiao W Wang , Stefan Hajnoczi , Eli Cohen , Paolo Bonzini , Zhu Lingshan , Eric Blake 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" CuWcqCAyMDIyLzEvMjIg5LiK5Y2INDoyNywgRXVnZW5pbyBQw6lyZXog5YaZ6YGTOgo+IFZob3N0 IHNoYWRvdyB2aXJ0cXVldWUgKFNWUSkgaXMgYW4gaW50ZXJtZWRpYXRlIGp1bXAgZm9yIHZpcnRx dWV1ZQo+IG5vdGlmaWNhdGlvbnMgYW5kIGJ1ZmZlcnMsIGFsbG93aW5nIHFlbXUgdG8gdHJhY2sg dGhlbS4gV2hpbGUgcWVtdSBpcwo+IGZvcndhcmRpbmcgdGhlIGJ1ZmZlcnMgYW5kIHZpcnRxdWV1 ZSBjaGFuZ2VzLCBpdCBpcyBhYmxlIHRvIGNvbW1pdCB0aGUKPiBtZW1vcnkgaXQncyBiZWluZyBk aXJ0aWVkLCB0aGUgc2FtZSB3YXkgcmVndWxhciBxZW11J3MgVmlydElPIGRldmljZXMKPiBkby4K Pgo+IFRoaXMgY29tbWl0IG9ubHkgZXhwb3NlcyBiYXNpYyBTVlEgYWxsb2NhdGlvbiBhbmQgZnJl ZS4gTmV4dCBwYXRjaGVzIG9mCj4gdGhlIHNlcmllcyBhZGQgZnVuY3Rpb25hbGl0eSBsaWtlIG5v dGlmaWNhdGlvbnMgYW5kIGJ1ZmZlcnMgZm9yd2FyZGluZy4KPgo+IFNpZ25lZC1vZmYtYnk6IEV1 Z2VuaW8gUMOpcmV6IDxlcGVyZXptYUByZWRoYXQuY29tPgo+IC0tLQo+ICAgaHcvdmlydGlvL3Zo b3N0LXNoYWRvdy12aXJ0cXVldWUuaCB8IDIxICsrKysrKysrKysKPiAgIGh3L3ZpcnRpby92aG9z dC1zaGFkb3ctdmlydHF1ZXVlLmMgfCA2NCArKysrKysrKysrKysrKysrKysrKysrKysrKysrKysK PiAgIGh3L3ZpcnRpby9tZXNvbi5idWlsZCAgICAgICAgICAgICAgfCAgMiArLQo+ICAgMyBmaWxl cyBjaGFuZ2VkLCA4NiBpbnNlcnRpb25zKCspLCAxIGRlbGV0aW9uKC0pCj4gICBjcmVhdGUgbW9k ZSAxMDA2NDQgaHcvdmlydGlvL3Zob3N0LXNoYWRvdy12aXJ0cXVldWUuaAo+ICAgY3JlYXRlIG1v ZGUgMTAwNjQ0IGh3L3ZpcnRpby92aG9zdC1zaGFkb3ctdmlydHF1ZXVlLmMKPgo+IGRpZmYgLS1n aXQgYS9ody92aXJ0aW8vdmhvc3Qtc2hhZG93LXZpcnRxdWV1ZS5oIGIvaHcvdmlydGlvL3Zob3N0 LXNoYWRvdy12aXJ0cXVldWUuaAo+IG5ldyBmaWxlIG1vZGUgMTAwNjQ0Cj4gaW5kZXggMDAwMDAw MDAwMC4uNjFlYTExMjAwMgo+IC0tLSAvZGV2L251bGwKPiArKysgYi9ody92aXJ0aW8vdmhvc3Qt c2hhZG93LXZpcnRxdWV1ZS5oCj4gQEAgLTAsMCArMSwyMSBAQAo+ICsvKgo+ICsgKiB2aG9zdCBz aGFkb3cgdmlydHF1ZXVlCj4gKyAqCj4gKyAqIFNQRFgtRmlsZUNvcHlyaWdodFRleHQ6IFJlZCBI YXQsIEluYy4gMjAyMQo+ICsgKiBTUERYLUZpbGVDb250cmlidXRvcjogQXV0aG9yOiBFdWdlbmlv IFDDqXJleiA8ZXBlcmV6bWFAcmVkaGF0LmNvbT4KPiArICoKPiArICogU1BEWC1MaWNlbnNlLUlk ZW50aWZpZXI6IEdQTC0yLjAtb3ItbGF0ZXIKPiArICovCj4gKwo+ICsjaWZuZGVmIFZIT1NUX1NI QURPV19WSVJUUVVFVUVfSAo+ICsjZGVmaW5lIFZIT1NUX1NIQURPV19WSVJUUVVFVUVfSAo+ICsK PiArI2luY2x1ZGUgImh3L3ZpcnRpby92aG9zdC5oIgo+ICsKPiArdHlwZWRlZiBzdHJ1Y3QgVmhv c3RTaGFkb3dWaXJ0cXVldWUgVmhvc3RTaGFkb3dWaXJ0cXVldWU7Cj4gKwo+ICtWaG9zdFNoYWRv d1ZpcnRxdWV1ZSAqdmhvc3Rfc3ZxX25ldyh2b2lkKTsKPiArCj4gK3ZvaWQgdmhvc3Rfc3ZxX2Zy ZWUoVmhvc3RTaGFkb3dWaXJ0cXVldWUgKnZxKTsKPiArCj4gKyNlbmRpZgo+IGRpZmYgLS1naXQg YS9ody92aXJ0aW8vdmhvc3Qtc2hhZG93LXZpcnRxdWV1ZS5jIGIvaHcvdmlydGlvL3Zob3N0LXNo YWRvdy12aXJ0cXVldWUuYwo+IG5ldyBmaWxlIG1vZGUgMTAwNjQ0Cj4gaW5kZXggMDAwMDAwMDAw MC4uNWVlN2I0MDFjYgo+IC0tLSAvZGV2L251bGwKPiArKysgYi9ody92aXJ0aW8vdmhvc3Qtc2hh ZG93LXZpcnRxdWV1ZS5jCj4gQEAgLTAsMCArMSw2NCBAQAo+ICsvKgo+ICsgKiB2aG9zdCBzaGFk b3cgdmlydHF1ZXVlCj4gKyAqCj4gKyAqIFNQRFgtRmlsZUNvcHlyaWdodFRleHQ6IFJlZCBIYXQs IEluYy4gMjAyMQo+ICsgKiBTUERYLUZpbGVDb250cmlidXRvcjogQXV0aG9yOiBFdWdlbmlvIFDD qXJleiA8ZXBlcmV6bWFAcmVkaGF0LmNvbT4KPiArICoKPiArICogU1BEWC1MaWNlbnNlLUlkZW50 aWZpZXI6IEdQTC0yLjAtb3ItbGF0ZXIKPiArICovCj4gKwo+ICsjaW5jbHVkZSAicWVtdS9vc2Rl cC5oIgo+ICsjaW5jbHVkZSAiaHcvdmlydGlvL3Zob3N0LXNoYWRvdy12aXJ0cXVldWUuaCIKPiAr Cj4gKyNpbmNsdWRlICJxZW11L2Vycm9yLXJlcG9ydC5oIgo+ICsjaW5jbHVkZSAicWVtdS9ldmVu dF9ub3RpZmllci5oIgo+ICsKPiArLyogU2hhZG93IHZpcnRxdWV1ZSB0byByZWxheSBub3RpZmlj YXRpb25zICovCj4gK3R5cGVkZWYgc3RydWN0IFZob3N0U2hhZG93VmlydHF1ZXVlIHsKPiArICAg IC8qIFNoYWRvdyBraWNrIG5vdGlmaWVyLCBzZW50IHRvIHZob3N0ICovCj4gKyAgICBFdmVudE5v dGlmaWVyIGhkZXZfa2ljazsKPiArICAgIC8qIFNoYWRvdyBjYWxsIG5vdGlmaWVyLCBzZW50IHRv IHZob3N0ICovCj4gKyAgICBFdmVudE5vdGlmaWVyIGhkZXZfY2FsbDsKPiArfSBWaG9zdFNoYWRv d1ZpcnRxdWV1ZTsKPiArCj4gKy8qKgo+ICsgKiBDcmVhdGVzIHZob3N0IHNoYWRvdyB2aXJ0cXVl dWUsIGFuZCBpbnN0cnVjdCB2aG9zdCBkZXZpY2UgdG8gdXNlIHRoZSBzaGFkb3cKPiArICogbWV0 aG9kcyBhbmQgZmlsZSBkZXNjcmlwdG9ycy4KPiArICovCj4gK1Zob3N0U2hhZG93VmlydHF1ZXVl ICp2aG9zdF9zdnFfbmV3KHZvaWQpCj4gK3sKPiArICAgIGdfYXV0b2ZyZWUgVmhvc3RTaGFkb3dW aXJ0cXVldWUgKnN2cSA9IGdfbmV3MChWaG9zdFNoYWRvd1ZpcnRxdWV1ZSwgMSk7Cj4gKyAgICBp bnQgcjsKPiArCj4gKyAgICByID0gZXZlbnRfbm90aWZpZXJfaW5pdCgmc3ZxLT5oZGV2X2tpY2ss IDApOwo+ICsgICAgaWYgKHIgIT0gMCkgewo+ICsgICAgICAgIGVycm9yX3JlcG9ydCgiQ291bGRu J3QgY3JlYXRlIGtpY2sgZXZlbnQgbm90aWZpZXI6ICVzIiwKPiArICAgICAgICAgICAgICAgICAg ICAgc3RyZXJyb3IoZXJybm8pKTsKPiArICAgICAgICBnb3RvIGVycl9pbml0X2hkZXZfa2ljazsK PiArICAgIH0KPiArCj4gKyAgICByID0gZXZlbnRfbm90aWZpZXJfaW5pdCgmc3ZxLT5oZGV2X2Nh bGwsIDApOwo+ICsgICAgaWYgKHIgIT0gMCkgewo+ICsgICAgICAgIGVycm9yX3JlcG9ydCgiQ291 bGRuJ3QgY3JlYXRlIGNhbGwgZXZlbnQgbm90aWZpZXI6ICVzIiwKPiArICAgICAgICAgICAgICAg ICAgICAgc3RyZXJyb3IoZXJybm8pKTsKPiArICAgICAgICBnb3RvIGVycl9pbml0X2hkZXZfY2Fs bDsKPiArICAgIH0KPiArCj4gKyAgICByZXR1cm4gZ19zdGVhbF9wb2ludGVyKCZzdnEpOwo+ICsK PiArZXJyX2luaXRfaGRldl9jYWxsOgo+ICsgICAgZXZlbnRfbm90aWZpZXJfY2xlYW51cCgmc3Zx LT5oZGV2X2tpY2spOwo+ICsKPiArZXJyX2luaXRfaGRldl9raWNrOgo+ICsgICAgcmV0dXJuIE5V TEw7Cj4gK30KPiArCj4gKy8qKgo+ICsgKiBGcmVlIHRoZSByZXNvdXJjZXMgb2YgdGhlIHNoYWRv dyB2aXJ0cXVldWUuCj4gKyAqLwo+ICt2b2lkIHZob3N0X3N2cV9mcmVlKFZob3N0U2hhZG93Vmly dHF1ZXVlICp2cSkKPiArewo+ICsgICAgZXZlbnRfbm90aWZpZXJfY2xlYW51cCgmdnEtPmhkZXZf a2ljayk7Cj4gKyAgICBldmVudF9ub3RpZmllcl9jbGVhbnVwKCZ2cS0+aGRldl9jYWxsKTsKPiAr ICAgIGdfZnJlZSh2cSk7Cj4gK30KPiBkaWZmIC0tZ2l0IGEvaHcvdmlydGlvL21lc29uLmJ1aWxk IGIvaHcvdmlydGlvL21lc29uLmJ1aWxkCj4gaW5kZXggNTIxZjdkNjRhOC4uMmRjODc2MTNiYyAx MDA2NDQKPiAtLS0gYS9ody92aXJ0aW8vbWVzb24uYnVpbGQKPiArKysgYi9ody92aXJ0aW8vbWVz b24uYnVpbGQKPiBAQCAtMTEsNyArMTEsNyBAQCBzb2Z0bW11X3NzLmFkZCh3aGVuOiAnQ09ORklH X0FMTCcsIGlmX3RydWU6IGZpbGVzKCd2aG9zdC1zdHViLmMnKSkKPiAgIAo+ICAgdmlydGlvX3Nz ID0gc3Muc291cmNlX3NldCgpCj4gICB2aXJ0aW9fc3MuYWRkKGZpbGVzKCd2aXJ0aW8uYycpKQo+ IC12aXJ0aW9fc3MuYWRkKHdoZW46ICdDT05GSUdfVkhPU1QnLCBpZl90cnVlOiBmaWxlcygndmhv c3QuYycsICd2aG9zdC1iYWNrZW5kLmMnKSkKPiArdmlydGlvX3NzLmFkZCh3aGVuOiAnQ09ORklH X1ZIT1NUJywgaWZfdHJ1ZTogZmlsZXMoJ3Zob3N0LmMnLCAndmhvc3QtYmFja2VuZC5jJywgJ3Zo b3N0LXNoYWRvdy12aXJ0cXVldWUuYycpKQoKCkkgd29uZGVyIGlmIHdlIG5lZWQgYSBkZWRpY2F0 ZWQgY29uZmlnIG9wdGlvbiBmb3Igc2hhZG93IHZpcnRxdWV1ZS4KClRoYW5rcwoKCj4gICB2aXJ0 aW9fc3MuYWRkKHdoZW46ICdDT05GSUdfVkhPU1RfVVNFUicsIGlmX3RydWU6IGZpbGVzKCd2aG9z dC11c2VyLmMnKSkKPiAgIHZpcnRpb19zcy5hZGQod2hlbjogJ0NPTkZJR19WSE9TVF9WRFBBJywg aWZfdHJ1ZTogZmlsZXMoJ3Zob3N0LXZkcGEuYycpKQo+ICAgdmlydGlvX3NzLmFkZCh3aGVuOiAn Q09ORklHX1ZJUlRJT19CQUxMT09OJywgaWZfdHJ1ZTogZmlsZXMoJ3ZpcnRpby1iYWxsb29uLmMn KSkKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClZpcnR1 YWxpemF0aW9uIG1haWxpbmcgbGlzdApWaXJ0dWFsaXphdGlvbkBsaXN0cy5saW51eC1mb3VuZGF0 aW9uLm9yZwpodHRwczovL2xpc3RzLmxpbnV4Zm91bmRhdGlvbi5vcmcvbWFpbG1hbi9saXN0aW5m by92aXJ0dWFsaXphdGlvbg==