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=-15.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 822DBC433DB for ; Mon, 1 Feb 2021 05:40:21 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 0DA5664E15 for ; Mon, 1 Feb 2021 05:40:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0DA5664E15 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 fraxinus.osuosl.org (Postfix) with ESMTP id C60AA85FB2; Mon, 1 Feb 2021 05:40:20 +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 qTYvKFQ84pLq; Mon, 1 Feb 2021 05:40:20 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 44D2185FB6; Mon, 1 Feb 2021 05:40:20 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 2CB31C0FA7; Mon, 1 Feb 2021 05:40:20 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 9FC7EC013A for ; Mon, 1 Feb 2021 05:40:18 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 8E1D385FB2 for ; Mon, 1 Feb 2021 05:40:18 +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 QmVyGrWIOPJY for ; Mon, 1 Feb 2021 05:40:18 +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 [216.205.24.124]) by fraxinus.osuosl.org (Postfix) with ESMTPS id BEDB285FB6 for ; Mon, 1 Feb 2021 05:40:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612158016; 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=5mQIIlM5CFm8xeXBVRv4nhYcFaur8L2TXYtvPPpQAxw=; b=dhKJrP/xoCyPJVF3+19azybF6bXigf5S1QqUbP0OcLRkomGIkEA3LySWzpHkifxUuXWbSz rBSsQD3V/+pwLc0faEQwEoL9/26syyuQeVsDNbzTjzXQandpt9gPgc9Aa0cfsJV1Bq2qAX ZiE2kpegDo8REL30KL8gSu1fDwLa3PU= 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-229-vKvb8gjeOfq7lZK4FcopZQ-1; Mon, 01 Feb 2021 00:40:15 -0500 X-MC-Unique: vKvb8gjeOfq7lZK4FcopZQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BD98FCC620; Mon, 1 Feb 2021 05:40:13 +0000 (UTC) Received: from [10.72.13.120] (ovpn-13-120.pek2.redhat.com [10.72.13.120]) by smtp.corp.redhat.com (Postfix) with ESMTP id 476F627CA9; Mon, 1 Feb 2021 05:40:03 +0000 (UTC) Subject: Re: [PATCH RFC v2 03/10] vringh: reset kiov 'consumed' field in __vringh_iov() To: Stefano Garzarella , virtualization@lists.linux-foundation.org References: <20210128144127.113245-1-sgarzare@redhat.com> <20210128144127.113245-4-sgarzare@redhat.com> From: Jason Wang Message-ID: <62bb2e93-4ac3-edf5-2baa-4c2be8257cf0@redhat.com> Date: Mon, 1 Feb 2021 13:40:01 +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: <20210128144127.113245-4-sgarzare@redhat.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Cc: Laurent Vivier , Max Gurtovoy , kvm@vger.kernel.org, "Michael S. Tsirkin" , linux-kernel@vger.kernel.org, Xie Yongji , Stefan Hajnoczi 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" Ck9uIDIwMjEvMS8yOCDkuIvljYgxMDo0MSwgU3RlZmFubyBHYXJ6YXJlbGxhIHdyb3RlOgo+IF9f dnJpbmdoX2lvdigpIG92ZXJ3cml0ZXMgdGhlIGNvbnRlbnRzIG9mIHJpb3YgYW5kIHdpb3YsIGlu IGZhY3QgaXQKPiByZXNldHMgdGhlICdpJyBhbmQgJ3VzZWQnIGZpZWxkcywgYnV0IGFsc28gdGhl IGNvbnN1bWVkIGZpZWxkIHNob3VsZAo+IGJlIHJlc2V0IHRvIGF2b2lkIGFuIGluY29uc2lzdGVu dCBzdGF0ZS4KPgo+IFNpZ25lZC1vZmYtYnk6IFN0ZWZhbm8gR2FyemFyZWxsYSA8c2dhcnphcmVA cmVkaGF0LmNvbT4KCgpJIGhhZCBhIHF1ZXN0aW9uKEkgcmVtZW1iZXIgd2UgaGFkIHNvbWUgZGlz Y3Vzc2lvbiBsaWtlIHRoaXMgYnV0IEkgCmZvcmdldCB0aGUgY29uY2x1c2lvbik6CgpJIHNlZSBl LmcgaW4gdnJpbmdoX2dldGRlc2Nfa2VybigpIGl0IGhhcyB0aGUgZm9sbG93aW5nIGNvbW1lbnQ6 CgovKgogwqAqIE5vdGUgdGhhdCB5b3UgbWF5IG5lZWQgdG8gY2xlYW4gdXAgcmlvdiBhbmQgd2lv diwgZXZlbiBvbiBlcnJvciEKIMKgKi8KClNvIGl0IGxvb2tzIHRvIG1lIHRoZSBjb3JyZWN0IHdh eSBpcyB0byBjYWxsIHZyaW5naF9raW92X2NsZWFudXAoKSBiZWZvcmU/CgpUaGFua3MKCgo+IC0t LQo+ICAgZHJpdmVycy92aG9zdC92cmluZ2guYyB8IDQgKystLQo+ICAgMSBmaWxlIGNoYW5nZWQs IDIgaW5zZXJ0aW9ucygrKSwgMiBkZWxldGlvbnMoLSkKPgo+IGRpZmYgLS1naXQgYS9kcml2ZXJz L3Zob3N0L3ZyaW5naC5jIGIvZHJpdmVycy92aG9zdC92cmluZ2guYwo+IGluZGV4IGY2ODEyMjcw NTcxOS4uYmVlNjNkNjgyMDFhIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvdmhvc3QvdnJpbmdoLmMK PiArKysgYi9kcml2ZXJzL3Zob3N0L3ZyaW5naC5jCj4gQEAgLTI5MCw5ICsyOTAsOSBAQCBfX3Zy aW5naF9pb3Yoc3RydWN0IHZyaW5naCAqdnJoLCB1MTYgaSwKPiAgIAkJcmV0dXJuIC1FSU5WQUw7 Cj4gICAKPiAgIAlpZiAocmlvdikKPiAtCQlyaW92LT5pID0gcmlvdi0+dXNlZCA9IDA7Cj4gKwkJ cmlvdi0+aSA9IHJpb3YtPnVzZWQgPSByaW92LT5jb25zdW1lZCA9IDA7Cj4gICAJaWYgKHdpb3Yp Cj4gLQkJd2lvdi0+aSA9IHdpb3YtPnVzZWQgPSAwOwo+ICsJCXdpb3YtPmkgPSB3aW92LT51c2Vk ID0gd2lvdi0+Y29uc3VtZWQgPSAwOwo+ICAgCj4gICAJZm9yICg7Oykgewo+ICAgCQl2b2lkICph ZGRyOwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KVmly dHVhbGl6YXRpb24gbWFpbGluZyBsaXN0ClZpcnR1YWxpemF0aW9uQGxpc3RzLmxpbnV4LWZvdW5k YXRpb24ub3JnCmh0dHBzOi8vbGlzdHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3Rp bmZvL3ZpcnR1YWxpemF0aW9u