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=-0.7 required=3.0 tests=BAYES_00,FROM_ILLEGAL_CHARS, HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 A4465C2D0E2 for ; Tue, 22 Sep 2020 07:06:37 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 D31AA23A1E for ; Tue, 22 Sep 2020 07:06:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D31AA23A1E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=nongnu.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:48170 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kKcNn-00035r-Qd for qemu-devel@archiver.kernel.org; Tue, 22 Sep 2020 03:06:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:58156) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kKcC9-0001zI-5a for qemu-devel@nongnu.org; Tue, 22 Sep 2020 02:54:33 -0400 Received: from smtp4.jd.com ([59.151.64.78]:2049) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kKcC1-0003c9-5J for qemu-devel@nongnu.org; Tue, 22 Sep 2020 02:54:31 -0400 Received: from JDCloudMail10.360buyAD.local (172.31.68.43) by JDCloudMail16.360buyAD.local (172.31.68.49) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1847.3; Tue, 22 Sep 2020 14:47:40 +0800 Received: from JDCloudMail10.360buyAD.local ([fe80::7489:42a2:4437:c234]) by JDCloudMail10.360buyAD.local ([fe80::7489:42a2:4437:c234%5]) with mapi id 15.01.1847.007; Tue, 22 Sep 2020 14:47:40 +0800 To: "mst@redhat.com" , "tiwei.bie@intel.com" , "alex.williamson@redhat.com" CC: "qemu-devel@nongnu.org" Subject: Question about guest notification offload Thread-Topic: Question about guest notification offload Thread-Index: AdaQqRkooEfHrtFKS3u4T/9zU7Lj4A== Date: Tue, 22 Sep 2020 06:47:40 +0000 Message-ID: Accept-Language: zh-CN, en-US Content-Language: zh-CN X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.31.12.238] Content-Type: multipart/alternative; boundary="_000_a4141e1402b6434896fc5949d33e3b06jdcom_" MIME-Version: 1.0 Received-SPF: pass client-ip=59.151.64.78; envelope-from=duanzhenzhong@jd.com; helo=smtp4.jd.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/22 02:47:41 X-ACL-Warn: Detected OS = Windows 7 or 8 [fuzzy] X-Spam_score_int: 38 X-Spam_score: 3.8 X-Spam_bar: +++ X-Spam_report: (3.8 / 5.0 requ) BAYES_00=-1.9, CHARSET_FARAWAY_HEADER=3.2, HTML_MESSAGE=0.001, MIME_CHARSET_FARAWAY=2.45, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Tue, 22 Sep 2020 03:01:46 -0400 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Reply-to: 段振中 From: 段振中 via --_000_a4141e1402b6434896fc5949d33e3b06jdcom_ Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 SGkgTWFpbnRhaW5lcnMsDQoNCkkgc2V0dXAgYSB2ZHBhIGRldmljZSBhbmQgd2FudCB0byB1c2Ug dGhlIGhvc3QgYW5kIGd1ZXN0IG5vdGlmaWNhdGlvbnMgb2ZmbG9hZCBmb3IgYmV0dGVyIHBlcmZv cm1hbmNlLg0KSG9zdCBub3RpZmljYXRpb24gb2ZmbG9hZCB3b3JrcyB3ZWxsIGJ1dCBzZWVtcyBn dWVzdCBub3RpZmljYXRpb24gb2ZmbG9hZCBpc26hr3Qgc3VwcG9ydGVkIGluIHFlbXUuDQoNCkkg c2VlIHRoZXJlIHdlcmUgZWZmb3J0IHRvIGFkZCB0aGUgc3VwcG9ydCBmb3IgYm90aCBpbiBiZWxv dyBsaW5rIHR3byB5ZWFycyBhZ28uDQpodHRwczovL2xpc3RzLm9hc2lzLW9wZW4ub3JnL2FyY2hp dmVzL3ZpcnRpby1kZXYvMjAxODAzL21zZzAwMzA4Lmh0bWwNCg0KSG9zdCBub3RpZmljYXRpb24g b2ZmbG9hZCBnb3QgaXRzIHdheSBpbiBmaW5hbGx5IGJ1dCBndWVzdCBub3RpZmljYXRpb24gb2Zm bG9hZCBub3QsIEmhr20gaW50ZXJlc3RlZCB0byBrbm93IHRoZSByZWFzb24NCmd1ZXN0IG5vdGlm aWNhdGlvbiBvZmZsb2FkIG1pc3NlZC4gQXBwcmVjaWF0ZSB5b3VyIHJlcGx5LiBUaGFua3MgdmVy eSBtdWNoLg0KDQpaaGVuemhvbmcNCg== --_000_a4141e1402b6434896fc5949d33e3b06jdcom_ Content-Type: text/html; charset="gb2312" Content-Transfer-Encoding: quoted-printable

Hi Maintainers,

 

I setup a vdpa device and want = to use the host and guest notifications offload for better performance.

Host notification offload works= well but seems guest notification offload isn=A1=AFt supported in qemu.

 

I see there were effort to add = the support for both in below link two years ago.

https://lists.oasis-open= .org/archives/virtio-dev/201803/msg00308.html

 

H= ost notification offload got its way in finally but guest notification offl= oad not, I=A1=AFm interested to know the reason

g= uest notification offload missed. Appreciate your reply. Thanks very much.<= o:p>

<= o:p> 

Z= henzhong

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